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Journal articles on the topic 'Anaerobic baffed reactor'

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Published: 4 June 2021
Last updated: 3 February 2022

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1

ÖZDEMİR, Şebnem, Dilek Akman, Kevser CIRIK, Serden Başak, Arzu Kılıç, and Dilek Özgün. "Farklı Hidrolik Bekletme Sürelerinin Anaerobik Perdeli Reaktörde Sülfat İndirgenmesi Üzerine Etkisi / Effect of Different Hydraulic Retention Time (HRT) on Sulfate Reduction in Anaerobic Baffled Reactor." Journal of History Culture and Art Research 1, no. 4 (January 28, 2013): 487. http://dx.doi.org/10.7596/taksad.v1i4.173.

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Amaç: Doğal sularda değişen yapılarda ve konsantrasyonlarda sülfat bileşikleri bulunmaktadır. Ayrıca bazı endüstriyel atıksuların sülfat miktarı yüksektir ve doğal sulara karıştıklarında alıcı ortamdaki sülfat miktarını arttırmaktadır. Mevcut aerobik sistemlerin artan enerji maliyetlerinin işletme giderimini önemli ölçüde yükseltmesi nedeniyle anaerobik sistemler ekonomik bir atıksu arıtma alternatifi olarak önem kazanmıştır. Bu yüzden son zamanlarda yapılan çalışmalar sülfat içeren atıksuların arıtımında anaerobik arıtımın üzerine yoğunlaşmıştır. Anaerobik arıtım sistemlerinden anaerobik perdeli reaktör (APR) yapılan çalışmalar ışığında sülfat indirgenmesi için iyi bir stratejidir. Fakat sülfat içeren atıksuların anaerobik arıtım performansını etkileyen birçok parametre mevcuttur. Bu çalışmada farklı hidrolik bekleme sürelerinin (HBS) anaerobik perdeli reaktörde yüksek sülfat konsantrasyonuna sahip atıksuların arıtılabilirlik çalışmasına etkisi araştırılmıştır. Tasarım ve Yöntem: APR yukarı akışlı anaerobik çamur yataklı reaktörün bir modifikasyonudur. Kullanılan APR’nin uzunluğu 80 cm, genişliği ve derinliği ise 20 cm’dir. Reaktör camdan imal edilmiş olup toplam su hacmi 19 L’dir. Reaktör perdeler ile 4,75 L’lik dört eşit bölmeye ayrılmıştır. Ayrıca, yönlendirme perdeleri kullanılarak reaktöre beslenen atıksuyun çamur yatağında aşağıdan yukarıya doğru bir yol izlemesi sağlanmıştır. Çalışmada sentetik atıksu kullanılıp elektron verici olarak etanol, elektron alıcı olarak ise sülfat kullanılmıştır. Reaktörün her bölmesinden pH, alkalinite, kimyasal oksijen ihtiyacı (KOİ), sülfat ve sülfür tayinleri için haftada 3 gün numune alınmıştır. Bulgular: APR 120 gün boyunca farklı HBS’lerde (2; 1,5; 1; 0,5 gün) işletilerek arıtım performansı izlenmiştir. Bekleme süresinin 2 gün olduğu çalışma koşullarında çıkış suyundaki KOİ ve SO4-2 verimleri %84 ile %88 olarak gözlemlenirken bekleme süresinin 0,5 gün olduğu çalışma koşullarında ise bu değer %80 ve %75 olarak gözlemlenmiştir. Ayrıca bekleme süresinin 2 gün olduğu çalışma koşullarında son bölmedeki sülfür oluşum verimi % 75 iken, bekleme süresi 0,5 güne indirildiğinde aynı bölmedeki sülfür oluşum veriminin %96’a çıktığı gözlemlenmiştir. Çıkarımlar ve Özgün Değer: Yapılan bu çalışma ile yüksek sülfat konsantrasyona sahip atıksuların arıtımında anaerobik perdeli reaktörün iyi bir alternatif olabileceği kanıtlanmıştır. Ayrıca çıkış sülfat ve sülfür konsantrasyonlarının değişen HBS’den etkilenmediği gözlenmiştir. Effect of Different Hydraulic Retention Time (HRT) on Sulfate Reduction in Anaerobic Baffled Reactor Design and Method: The anaerobic baffled reactor (ABR) is a modification of up-flow anaerobic sludge blanket (UASB) reactor. A laboratory scale ABR was inoculated with an effluent of a full scale anaerobic digester located in Kayseri Wastewater Treatment Plant, Turkey. Before inoculation, the sludge was sieved to remove coarse materials. The ABR was 20 cm wide, 80 cm long, 20 cm deep and constructed from glass, with a working volume of 19 L. Reactor was divided into four equal 4.75 L compartments by vertical baffles, each compartment having down-comer and riser regions created by further vertical baffle. The lower parts of down-comer baffles were angled at 450 in order to direct the flow evenly through the riser. Ethanol and sulfate are consumed as electron donor and electron acceptor, respectively. Sulfate, dissolved sulfide, pH, alkalinity and chemical oxygen demand (COD) have measured three times a week. Aim: There are varying structures and concentrations of sulfate compounds in natural waters. In addition, the amount of sulfate is higher in some industrial wastewaters In addition, some industrial wastewaters and natural waters. Due to rise energy costs of existing aerobic systems, anaerobic systems have gained importance as an economic alternative to wastewater treatment. So that, recent studies have focused on anaerobic treatment of wastewaters containing sulfate. Anaerobic baffled reactor (ABR) from anaerobic systems is a good strategy for the reduction of sulfate. However, many parameters that affect the performance of anaerobic treatment of wastewater containing sulfate are available. In this study, treatability wastewater containing high sulfate concentration investigated the effect of hydraulic retention times (HRT). Results: The performance of different hydraulic retention times (2; 1.5; 1; 0.5 day) were observed in ABR operated for 120 days. In working conditions of HRT is 2 days COD and sulfate removal efficiciency, respectively, were observed in 88% and 84% while in working conditions of HRT is 0.5 days these efficiencies were observed in 80% and 75%. Also the yield of sulfur formation under the same conditions had risen from 75% to 96% in last compartment. Inferences and Original Value: In this study, in anaerobic baffled reactor treatment of wastewaters with high sulfate concentration has proven to be a good alternative. Effluent sulfate and sulphur concentrations have not effected from varying hydraulic retention times.
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2

Kwon, Se Young, Min Sun Kang, Se Woon Kim, Jung-Hun Shin, Han-Na Choi, Hoon Jang, and Jin Woo Cho. "Application of anaerobic baffled reactor to produce volatile fatty acids by acidification of primary sludge." Journal of Korean Society of Water and Wastewater 28, no. 1 (February 15, 2014): 13–23. http://dx.doi.org/10.11001/jksww.2014.28.1.13.

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3

Skiadas, I. V., and G. Lyberatos. "The periodic anaerobic baffled reactor." Water Science and Technology 38, no. 8-9 (October 1, 1998): 401–8. http://dx.doi.org/10.2166/wst.1998.0831.

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The most common bioreactor type used for anaerobic digestion is the Continuously Stirred Tank Reactor (CSTR). The main problem of this reactor type, i.e. the fact that the active biomass is continuously removed from the system leading to long retention times, has been overcome in a number of systems based on immobilization of the active biomass. Two represenstative types are the Upflow Anaerobic Sludge Blanket Reactor (UASBR) and the Anaerobic Baffled Reactor (ABR). The success of these reactor systems rests on the highly flocculated, well settling, compact methanogenic sludge granules which develop in these reactors. A novel reactor type named Periodic Anaerobic Baffled Reactor (PABR) has been designed, offering the following major advantage: it may be operated as an ABR, a UASBR or at an intermediate mode. The PABR hydraulic behavior has been characterized using residence time distribution experiments at different retention times. Simulating the PABR behavior, the dependence of the reactor performance on the switching frequency is determined as a function of the retention time. In particular, it is found that for high retention times the ABR mode is superior, whereas for low retention times, the UASBR mode should be preferred. In order to establish the accuracy of the predictions of the simulation study, the PABR behavior was experimentally verified using three different stable periodic states.
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4

Bodík, I., K. Kratochvíl, B. Herdová, G. Tapia, and E. Gašpariková. "Municipal wastewater treatment in the anaerobic-aerobic baffled filter reactor at ambient temperature." Water Science and Technology 46, no. 8 (October 1, 2002): 127–35. http://dx.doi.org/10.2166/wst.2002.0160.

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This paper presents the pilot-scale experiments with anaerobic-aerobic treatment of municipal wastewater. As the anaerobic part of the pilot-scale system, the combination of the anaerobic baffled reactor and the anaerobic filter was used. The aerobic part of reactor was designed as an activated sludge system with the carrier of biomass (polypropylene cords). Two pilot-scale reactors (AN-I and AN-II) under real conditions were monitored. All technological parameters were identical in both reactors, but the AN-I reactor was inoculated with the psychrophilic digested sludge. The HRT in the anaerobic and aerobic parts of reactors were about 15 hours and 4 hours, respectively. The temperature in both reactors varied during the year from 4.5 to 23 °C. During the yearly operation time both systems removed all monitored parameters with relatively high efficiencies (COD - 78.6-83.0%, BOD5 - 92.5-94.0 and SS - 80.9-92.7%). The intensive nitrification process was observed during the whole year in both reactors (under average temperature of 5.9 °C in January 2000, too). The average removal of the NH4-N varied during the year from 46.4 to 87.3%. In both systems the effective denitrification process was observed, too. In the real conditions it is possible to operate such systems for a long time without removing excess sludge.
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5

Moges, Melesse Eshetu, Daniel Todt, Eshetu Janka, Arve Heistad, and Rune Bakke. "Sludge blanket anaerobic baffled reactor for source-separated blackwater treatment." Water Science and Technology 78, no. 6 (September 25, 2018): 1249–59. http://dx.doi.org/10.2166/wst.2018.411.

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Abstract The performance of a sludge blanket anaerobic baffled reactor was tested as an integrated treatment system for source-separated blackwater. The system consists of a stirred equalization tank, a buffer inlet tank, and two identical reactors, each with a working volume of 16.4 L, operated in parallel. Both reactors run at 3-days hydraulic retention time with different intermittent pulse feeding. Pulse lengths of 12 and 24 seconds per feed were set with respective rates of 114 L h−1 and 52 L h−1 for the short-pulse fed reactor (RI) and the long-pulse fed reactor (RII). Stable performance of the reactors was attained after 120 and 90 days, for RI and RII, respectively. After stable conditions attained, total chemical oxygen demand (COD) removal efficiency stabilized above 78%. Biogas production ranged from 0.52 to 1.16 L d−1 L−1 reactor volume, with 67–82% methane concentration and an average conversion of 0.69 ± 0.2 and 0.73 ± 0.2 g CH4-COD g−1CODin for RI and RII, respectively. The results imply that source-separated blackwater can be treated effectively in an anaerobic sludge blanket process on average loading rate of 2.3 ± 0.5 g COD d−1 L−1 reactor volume with high methane production potential and more than 80% removal of organic and particulate matter.
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6

Ning, Lu, and Jin Liu. "Process Characteristics Study of Anaerobic Baffled Reactor (ABR)." Advanced Materials Research 160-162 (November 2010): 1551–57. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.1551.

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In this paper, Anaerobic Baffled Reactor (ABR) was applied to treat the synthetic wastewater in the matrix of starch and glucose. the reactor was started using low loading start-up , VLR controlled at 0.59~11.05kgCOD/m3•d, there are some granular sludge appeared after running 18 days. The figure and size of granular sludge in each compartment revealed different characteristics due to the changing of OLRs and shear force between gas and liquid in each compartment. The COD removal efficiency was higher than 90% and steady when the reactor’s start-up finished.When the anaerobic granular sludge appeared in the reactor, the VLR was 1.29kgCOD/(m3•d)、COD removal efficiency was 83％、hydraulic surface loading was 0.078m3/m2.h and an HRT was 30h. The VLR had remarkable influence on COD removal efficiency、VFA、pH and ALK. When VLR was 5.57kgCOD/(m3•d), COD removal efficiency and ALK were the minimum, VFA in the outflow exceeded 1000mg/L, reactor’s efficiency decreased .The reactor recovered after adjusting VLR and ALK value. Compared with the third and fourth compartments, the first and second compartments were less sensitive to changing of VFA. When pH deviated from adapt range, the COD removal efficiency was decreased obviously, so pH value was kept in the range of 6.2 to 6.5 for the later stage of experiments.
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7

Ibeje, A. O., and E. Onukwugha. "A Model for Optimal Treatment of Cassava Wastewater Using Anaerobic Baffled Reactor." Nigerian Journal of Technological Development 18, no. 2 (August 13, 2021): 129–34. http://dx.doi.org/10.4314/njtd.v18i2.7.

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The major components of the effluents from cassava processing industries are cyanide and starch. However it is suspected that cyanide inhibits the treatment of cassava wastewater. The experimental data were successfully fitted to a polynomial model which was used to optimize the treatment processes at a laboratory scale. The Monod and Michealis-menten models for cassava wastewater treatment was successfully calibrated and validated in an ABR system. For Michealis-Menten model, the maximum substrate utilization rate is estimated in the range: 2866.88 to 1432.84 mgl-1 and for Monod’s model, it is estimated in the range: 493 to 1242 mgl-1, which is more realistic, hence validating the empirical model as more accurate than the former, which is theoretical. The result revealed that the inhibitor constant decreased from 9.9989 to 1.6101mgl-1 as the number of baffles increased from 3 to 10. To reach a maximum COD removal efficiency of 99%, it was found that the aspect ratio of 10, 20 baffles, cyanide inhibition constant of 30 mg/l and influent flow rate of 0.8 l/min, are the required optimum operating conditions of the anaerobic baffled reactors.
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8

Ratanatamskul, Chavalit, and Chakraphan Charoenphol. "The energy-saving anaerobic baffled reactor membrane bioreactor (EABR-MBR) system for recycling wastewater from a high-rise building." Water Science and Technology 71, no. 12 (April 7, 2015): 1838–44. http://dx.doi.org/10.2166/wst.2015.150.

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A novel energy-saving anaerobic baffled reactor–membrane bioreactor (EABR-MBR) system has been developed as a compact biological treatment system for reuse of water from a high-rise building. The anaerobic baffled reactor (ABR) compartment had five baffles and served as the anaerobic degradation zone, followed by the aerobic MBR compartment. The total operating hydraulic retention time (HRT) of the EABR-MBR system was 3 hours (2 hours for ABR compartment and very short HRT of 1 hour for aerobic MBR compartment). The wastewater came from the Charoen Wisawakam building. The results showed that treated effluent quality was quite good and highly promising for water reuse purposes. The average flux of the membrane was kept at 30 l/(m2h). The EABR-MBR system could remove chemical oxygen demand, total nitrogen and total phosphorus from building wastewater by more than 90%. Moreover, it was found that phosphorus concentration was rising in the ABR compartment due to the phosphorus release phenomenon, and then the concentration decreased rapidly in the aerobic MBR compartment due to the phosphorus uptake phenomenon. This implies that phosphorus-accumulating organisms inside the EABR-MBR system are responsible for biological phosphorus removal. The research suggests that the EABR-MBR system can be a promising system for water reuse and reclamation for high-rise building application in the near future.
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9

Sumantri, Indro, Ika Bagus Priyambada, and Hadiyanto Hadiyanto. "Solid-liquid anaerobic baffled reactor treating food waste." MATEC Web of Conferences 156 (2018): 03042. http://dx.doi.org/10.1051/matecconf/201815603042.

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The characteristics of the sauce industrial wastewater is high organic degradable materials, it requires adequate treatment in order to process wastewater is technically and economically feasible. The main treatment to remove high content of organic material is anaerobic process. The presence of a preservative agent in wastewater would lead to disruption of the growth of micro-organisms. Slow the growth of anaerobic bacteria require a solids residence time (solid retention time, SRT) period in anaerobic reactors. This research is to observe the effect of input COD with constant sludge height to the removal of COD. Main equipment process of anaerobic reactor is baffled reactor. Activated sludge used are obtained from the tofu and tempe wastewater treatment unit in Semarang while synthetic wastewater was obtained from dissolution of preservative material product (Del monte sauce). The control parameter was: pH, alkalinity, the ratio of COD: N: P, baffled configuration, wastewater flow rate (20 L/day), addition of micro-nutrient and height of suldge. The variable of reseach was initial COD input. The observed response is: COD removal and pH. The total COD removal for low organic loading (2369.7 mg COD/L) is 80.36 to 98.03 % and for high organic loading (7334 mg COD/L) is 98.15.
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10

Li, Xiao Rong, Ling Zhang, Juan Juan Qin, Xia Li, Jun Ning Chen, and Zong Lian She. "Performance of Hybrid Anaerobic Baffled Reactor in Treating Wastewater with High Strength of Suspended Solids." Advanced Materials Research 663 (February 2013): 1039–42. http://dx.doi.org/10.4028/www.scientific.net/amr.663.1039.

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Operating anaerobic reactors at high strength of suspended solids (SS) can lead to instability and high concentration SS in effluent. To overcome these limitations, anaerobic baffled reactor (ABR) was modified by enlarging the first compartment and filling carriers in up-comer regions to produce the hybrid anaerobic baffled reactor (HABR). Consequently, more favorable conditions were created in the first compartment such as longer hydraulic retention time, better settlement characteristics and longer cell retention time. The carriers improved the retention of SS and cell across the reactor. An ABR with enlarged first compartment (no carriers) was used to compare the performance. The influent COD and SS concentrations were increased from 700 and 300 to 7000 and 2800 mg/L, respectively. After a 187 days operation, with influent COD and SS of 7000 mg/L and 2800 mg/L, both HABR and ABR kept an efficiency of higher than 94.0% in treating COD and an efficiency of higher than 93.0% in removing SS. Higher removals of COD and SS were observed in the HABR than in the ABR. At the same time, performance of HABR was more stable than that of ABR.
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11

Jing, Ling, and Xin Xia Wang. "Research on the Start-Up Effect of Two-Phase Anaerobic Baffled Reactor." Applied Mechanics and Materials 448-453 (October 2013): 600–603. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.600.

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Aiming at the fact that the low concentration sewage in small cities, this paper presents Two-phase Anaerobic Baffled Reactor (TAABR) for living wastewater treatment, importantly, it designs and researches Two-phase Anaerobic Baffled Reactor and its advantages, designs a trial project according to the characteristics of the reactor equip. The experiment uses the method that by shortening HRT to raise the load to start and analyses the operating results during startup as follows: 1. 53 days later anaerobic reactor start-up successes.2. When the load is 0.5kgCOD/m3.d, the removal rate of COD is more than 80%. 3. PH value is not the main limiting factors during start up in the reactor and there is basically no danger of excessive acidification.
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12

Dai, Youzhi, Hanchang Shi, and Yi Qian. "An anaerobic baffled reactor for pentachlorophenol degradation." Journal of Environmental Science and Health, Part A 35, no. 10 (November 2000): 1803–10. http://dx.doi.org/10.1080/10934520009377076.

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13

Grobicki, A., and D. C. Stuckey. "Hydrodynamic characteristics of the anaerobic baffled reactor." Water Research 26, no. 3 (March 1992): 371–78. http://dx.doi.org/10.1016/0043-1354(92)90034-2.

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14

BACHMANN, A. "Performance characteristics of the anaerobic baffled reactor." Water Research 19, no. 1 (1985): 99–106. http://dx.doi.org/10.1016/0043-1354(85)90330-6.

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15

Feng, Huajun, Lifang Hu, Qaisar Mahmood, Caidi Qiu, Chengran Fang, and Dongsheng Shen. "Anaerobic domestic wastewater treatment with bamboo carrier anaerobic baffled reactor." International Biodeterioration & Biodegradation 62, no. 3 (October 2008): 232–38. http://dx.doi.org/10.1016/j.ibiod.2008.01.009.

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16

Patidar, S. K., and Vinod Tare. "Effect of micro-nutrients in anaerobic degradation of sulfate laden organics." Canadian Journal of Civil Engineering 31, no. 3 (June 1, 2004): 420–31. http://dx.doi.org/10.1139/l03-104.

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The effect of micro-nutrients, such as Fe, Ni, Zn, Co, and Mo, on anaerobic degradation of sulfate laden organics was investigated using bench-scale models of upflow anaerobic sludge blanket (UASB) reactor, anaerobic baffled reactor (ABR), and hybrid anaerobic baffled reactor (HABR), operating in varying conditions in ten phases (organic loading of 1.9–5.75 kg COD/(m3·d), sulfate loading of 0.54–1.88 kg SO42–/(m3·d), chemical oxygen demand (COD):SO42–ratio of 2.0–8.6). In the initial phase, no nutrient limitation was observed with COD removal of more than 94% in all three systems. Subsequently, increase in sulfate loading resulted in Ni and Co limitation and their supplementation restored COD removal in UASB system. However, baffled systems did not recover because of severe inhibition by sulfide. Results indicate that precipitation of nutrients could seriously deteriorate process performance, leading to failure even before sulfide concentration attains toxic level. The limitation of Fe coupled with high sulfate loading (1.88 kg SO42–/(m3·d)) resulted in growth of low-density, fragile, hollow, and granular biomass in UASB that washed out and caused process instability. Supplementation of Fe with other nutrients stabilized UASB process and also improved COD removal.Key words: anaerobic degradation, nutrients, UASB, ABR, HABR, sulfide toxicity, sulfate laden organics.
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17

Fox, Peter, and Venkatraghavan Venkatasubbiah. "Coupled anaerobic/aerobic treatment of high-sulfate wastewater with sulfate reduction and biological sulfide oxidation." Water Science and Technology 34, no. 5-6 (September 1, 1996): 359–66. http://dx.doi.org/10.2166/wst.1996.0571.

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A pharmaceutical wastewater with a chemical oxygen demand (COD) concentration of 40,000 mg/l and a sulfate concentration of 5,000 mg/l was treated in a anaerobic baffled reactor. Treatment of the wastewater at 10% dilution was effective but at higher influent concentrations sulfide inhibition reduced efficacy of both COD conversion and sulfate conversion. A recycle line with an attached-film biological reactor was inserted into the anaerobic baffled reactor to facilitate biological sulfide oxidation. Recycling anaerobic effluent through a sulfide oxidizing biological system reduced inhibition in the anaerobic reactor by both reducing inhibitory sulfide concentrations within the reactor and by diluting the influent. The major product of the biological oxidation of sulfide by a Thiobacillus species appeared to be elemental sulfur. At an influent wastewater concentration of 40% and a HRT of 1 day, COD removal efficiencies were greater than 50% and the conversion of influent sulfate was greater than 95% with effluent sulfide concentrations of less than 20 mg/l. The major product observed from degradation of isopropyl acetate was acetic acid. Coupled anaerobic/aerobic provided removal of sulfur from the wastewater stream and helped to stabilize the pH in the reactor system.
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18

Chen, Hui, Qian-Qian Chen, Zhi-Jian Shi, Jia-Jia Xu, An-Na Liu, Li-Ling He, Yu-Huan Wu, Man-Ling Shi, and Ren-Cun Jin. "Improved anammox performance with a flow switched anaerobic baffled reactor (FSABR) modified from a common anaerobic baffled reactor (CABR)." Ecological Engineering 92 (July 2016): 229–35. http://dx.doi.org/10.1016/j.ecoleng.2016.04.004.

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19

Vuitik, Guilherme Araujo, Lucas Tadeu Fuess, Valeria Del Nery, René Bañares-Alcántara, and Eduardo Cleto Pires. "Effects of recirculation in anaerobic baffled reactors." Journal of Water Process Engineering 28 (April 2019): 36–44. http://dx.doi.org/10.1016/j.jwpe.2018.12.013.

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20

Farrokhi, M., and A. R. Mesdaghinia . "Removal of 3-monochlorophenol in Anaerobic Baffled Reactor." Journal of Applied Sciences 7, no. 12 (June 1, 2007): 1652–55. http://dx.doi.org/10.3923/jas.2007.1652.1655.

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21

Krishna, G. V. T. Gopala, Pramod Kumar, and Pradeep Kumar. "Complex wastewater treatment using an anaerobic baffled reactor." Environmental Progress 26, no. 4 (2007): 391–98. http://dx.doi.org/10.1002/ep.10239.

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22

Wang, Jianlong, Yongheng Huang, and Xuan Zhao. "Performance and characteristics of an anaerobic baffled reactor." Bioresource Technology 93, no. 2 (June 2004): 205–8. http://dx.doi.org/10.1016/j.biortech.2003.06.004.

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23

Ahamed, A., C. L. Chen, R. Rajagopal, D. Wu, Y. Mao, I. J. R. Ho, J. W. Lim, and J. Y. Wang. "Multi-phased anaerobic baffled reactor treating food waste." Bioresource Technology 182 (April 2015): 239–44. http://dx.doi.org/10.1016/j.biortech.2015.01.117.

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24

Sun, Li, and Jing Ping Zhu. "Research on CBR+PFB to Treat Domestic Wastewater." Advanced Materials Research 183-185 (January 2011): 611–15. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.611.

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The combined process which consisted of a four-stage contact baffled reactor followed by a five-stage plant filter bed was used to treat domestic wastewater. The start-up of the four-stage contact baffled reactor was investigated, and the efficiency of the combined technology treating domestic wastewater was studied. The results indicated that the four-stage contact baffled reactor which inoculated with anaerobic sludge could be started up in 52 d, and the proper hydraulic residence time was 24 h; when the four-stage contact baffled reactor was running stably, its average CODCr removal efficiency was 57.0%, and in the four-stage contact baffled reactor, the average CODCr removal efficiency of each stage was decreased gradually, which were 45.8%, 11.1%, 6.8% and 3.3%, respectively; when the influent CODCr was 276-370 mg/L, the effluent CODCr of the combined technology was 73.0-90.7 mg/L and the average CODCr removal efficiency of the combined technology was 75.0%.
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25

Patidar, S. K., and V. Tare. "Soluble microbial products formation and their effect on trace metal availability during anaerobic degradation of sulfate laden organics." Water Science and Technology 58, no. 4 (September 1, 2008): 749–55. http://dx.doi.org/10.2166/wst.2008.443.

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Anaerobic degradation of sulfate laden organics involves sulfide generation and release of soluble microbial products (SMP). Sulfide causes direct toxicity to microorganisms and precipitation of key metals. On the other hand, SMP helps in keeping higher soluble concentration of essential metals through complexation and alleviating sulfide toxicity. The role of SMP is well recognized in biological treatment of wastes but many issues are yet to be fully elucidated. The present paper discusses the effect of sulfide concentrations on SMP production and effect of complexation on soluble Fe, Ni, Zn and Co concentrations in laboratory scale uplflow anaerobic sludge blanket (UASB) reactor, anaerobic baffled reactor (ABR) and hybrid anaerobic baffled reactor (HABR) degrading synthetic sulfate laden organics at 35°C for varying operating conditions. Results indicate increased SMP concentration with increasing sulfide concentration and significantly higher measured Fe, Ni, Zn and Co concentrations due to complexation in all three systems. Soluble Fe 0.43–0.66 mg/L; Ni 0.29–0.4 mg/L; Zn 0.15–0.19 mg/L; and Co 0.13–0.29 mg/L appears to be adequate for stable process operation and performance.
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26

Mathioudakis, D., I. Michalopoulos, K. Kalogeropoulos, K. Papadopoulou, and G. Lyberatos. "Anaerobic digestion of dried/shredded food waste in a periodic anaerobic baffled reactor." Water Science and Technology 84, no. 2 (June 17, 2021): 420–30. http://dx.doi.org/10.2166/wst.2021.230.

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Abstract The objective of the current work is to study the impact of the operational parameters' variation (HRT, OLR and T) on biomethane productivity in a periodic anaerobic baffled reactor (PABR). The feedstock used was a biomass product named food residue biomass (FORBI), which is dried and shredded source-separated household food waste. The PABR is an innovative, high-rate bioreactor. Apart from the hydraulic retention time (HRT) and the organic loading rate (OLR), an important operational parameter is the switching period (T) of the feeding compartment: when T is high, the bioreactor operation is similar to an anaerobic baffled reactor (ABR), while when it is low, the operation approaches that of an upflow anaerobic sludge blanket reactor (UASBR). Nine distinct experimental phases were conducted, during which the operational parameters of the PABR were consecutively modified: the HRT varied from 9 to 2.5 days, T between 2 days and 1 and finally the OLR from 1.24 gCOD/Lbioreactor*d to 8.08 gCOD/Lbioreactor*d. The maximum biomethane yield was 384 LCH4/kgFORBI corresponding to the operation at HRT = 5 d, OLR = 2.14 gCOD/Lbioreactor*d and T = 2 days. Similar efficiency (333 LCH4/kg­FORBI) was achieved at higher OLR (4.53 gCOD/Lbioreactor*d).
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27

Lin, Ying Zi, and Qing Liang Li. "Study on Changes of Nitrobenzene Degrading Bacteria in ABR Reactor." Advanced Materials Research 343-344 (September 2011): 1269–75. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.1269.

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By adding nitrobenzene to ABR (anaerobic baffled reactor) acclimation the flora in it, take 5 chambers sludge, extracted DNA and using PCR-DGGE technique amplification and separation product of bacterial 16S rDNA gene V3 region, then study the changes and diversity anaerobic sludge bacteria. The results showed that there was a succession in the communities of 5 reactor compartment, and the microbial diversity changes showing a characteristic of synergistic. ABR reactor has obvious characteristics of multi-phase process.
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28

Boopathy, R., and A. Tilche. "Anaerobic digestion of high strength molasses wastewater using hybrid anaerobic baffled reactor." Water Research 25, no. 7 (July 1991): 785–90. http://dx.doi.org/10.1016/0043-1354(91)90157-l.

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29

Li, Hui Ting, Yong Feng Li, Yan Jiao Gao, and Shu Ai Wang. "Start-Up Procedures and Analysis of Microbial Segregation in HABR Using Synthetic Brewery Wastewater." Advanced Materials Research 113-116 (June 2010): 1176–81. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1176.

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A laboratory-scale hybrid anaerobic baffled reactor (HABR) with five compartments using synthetic brewery wastewater as organic loading rates (OLRs) was investigated for the start-up performance and the effects of microbial community segregation on reactor start-up. Experimental results demonstrated that it was found that the COD removal efficiencies were 92~96% at 1.2 kgCOD/(m3•d) feeding over a period of 33 d, after which the reactors then successfully started. The highest percentage of CO2 in biogas was found in Compartment 1, thereafter decreased from Compartment 2 to Compartment 5 which corresponded to the increased of the percentage of CH4. It indicated that the proper anaerobic consortium in each separate compartment was developed along with specific environmental conditions, which offers the explanations that high treatment efficiency of HABR accompanied by high process stability and low operational requirements in start-up period.
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30

Wang, Cui, Changyi Liu, Xiaoxiao Si, Cuixia Zhang, Fan Liu, Li’e Yu, and Guohua Chen. "Study on the Choice of Wastewater Treatment Process Based on the Emergy Theory." Processes 9, no. 9 (September 13, 2021): 1648. http://dx.doi.org/10.3390/pr9091648.

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With the increase in industrialization and urbanization, water pollution has become increasingly serious, and wastewater treatment has become a common step in preventing this. For a greater understanding of the sustainability of different wastewater treatment systems, two processes, Anaerobic Baffled Reactor + Anaerobic-Anoxic-Oxic and Anaerobic Baffled Reactor + Cyclic Activated Sludge System, were selected, and their sustainability was evaluated based on three indicators, namely emergy yield ratio, environmental load rate, and emergy sustainability development index, according to emergy theory. The results show that the emergy yield ratio and environmental load rate of the ABR + CASS process were lower than those of the ABR + A2/O process, and the emergy sustainability development index of the ABR + CASS process was higher than that of the ABR + A2/O process, showing better sustainability. The research methods and findings of this study play an important role for decision makers in selecting sustainable wastewater treatment processes.
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31

Shanmugam, A. S., and J. C. Akunna. "Comparing the performance of UASB and GRABBR treating low strength wastewaters." Water Science and Technology 58, no. 1 (July 1, 2008): 225–32. http://dx.doi.org/10.2166/wst.2008.338.

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Anaerobic technologies have proved successful in the treatment of various high strength wastewaters with perceptible advantages over aerobic systems. The applicability of anaerobic processes to treat low strength wastewaters has been increasing with the evolution of high-rate reactors capable of achieving high sludge retention time (SRT) when operating at low HRT. However, the performance of these systems can be affected by high variations in flow and wastewater composition. This paper reports on the comparative study carried out with two such high rate reactors systems to evaluate their performances when used for the treatment of low strength wastewaters at high hydraulic rates. One of the two systems is the most commonly used upflow anaerobic sludge blanket (UASB) reactor in which all reactions occur within a single vessel. The other is the granular bed baffled reactor (GRABBR) that encourages different stages of anaerobic digestion in separate vessels longitudinally across the reactor. The reactors, with equal capacity of 10 litres, were subjected to increasing organic loading rates (OLRs) and hydraulic retention times (HRTs) of up to 60 kg COD m−3 d−1 and 1 h respectively. Results show that the GRABBR has greater processes stability at relatively low HRTs, whilst the UASB seems to be better equipped to cope with organic overloads or shockloads. The study also shows that the GRABBR enables the harvesting of biogas with greater energetic value and hence greater re-use potential than the UASB. Biogas of up to 86% methane content is obtainable with GRABBR treating low strength wastewaters.
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32

Zheng, Guo Chen, Jian Zheng Li, Wei Li, Zhu Jun Tian, Shuang Shi Dong, Ajay Kumar Jha, Zhao Han Zhang, Yong Sheng Zhao, and Feng Zhao. "Survey of Combined Hydrogen-Methane Production in Anaerobic Baffled Reactor (ABR)." Advanced Materials Research 550-553 (July 2012): 3180–83. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.3180.

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Anaerobic fermentative technology is an important route to solving environmental pollution and resources problems. Combined hydrogen and methane production in a two-stage process is a concept which has been developed in recent years Anaerobic biological treatment organic wastewater can produce large amounts of hydrogen and methane，which can be used as energy carrier. At present，the research focusing on the adjustment of fermentation hydrogen-methane production has been conducted. Furthermore, the simultaneous hydrogen-methane production was tested and optimized. However, it lacked combined hydrogen-methane production in an anaerobic reactor in literature so far. Based on preview experiment, the paper studied the simultaneous hydrogen-methane fermentation in an anaerobic baffled reactor (ABR) system. ABR has the advantage of biomass phase separation and integration of acidogenic and methanogenic processes to simultaneously conduct hydrogen-methane production during wastewater treatment. Through deep biohydrogen production, it can enhance the activity of hydrogen-producing acetogens (HPA) and the efficiencies of the combined hydrogen-methane fermentation system. It showed to enhance the activity of HPA was the key to the combined hydrogen-methane production.
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33

Manariotis, Ioannis D., and Sotirios G. Grigoropoulos. "Low-Strength Wastewater Treatment Using an Anaerobic Baffled Reactor." Water Environment Research 74, no. 2 (March 2002): 170–76. http://dx.doi.org/10.2175/106143002x139884.

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34

Sallis, P. J., and S. Uyanik. "Granule development in a split-feed anaerobic baffled reactor." Bioresource Technology 89, no. 3 (September 2003): 255–65. http://dx.doi.org/10.1016/s0960-8524(03)00071-3.

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35

Zhu, Yongqiang, Dong An, Li-an Hou, Minmin Liu, and Shuili Yu. "Treatment of decentralized molasses wastewater using anaerobic baffled reactor." Desalination and Water Treatment 57, no. 50 (March 8, 2016): 23597–602. http://dx.doi.org/10.1080/19443994.2016.1138332.

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36

Yang, P. Y., and C. Y. Chou. "Horizontal-baffled anaerobic reactor for treating diluted swine wastewater." Agricultural Wastes 14, no. 3 (January 1985): 221–39. http://dx.doi.org/10.1016/s0141-4607(85)80032-9.

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37

Ahmad, Imran, Shreeshivadasan Chelliapan, Norazli Othman, Noor Shawal Nasri, and Santhana Krishnan. "Treatment of landfill leachate using modified anaerobic baffled reactor." DESALINATION AND WATER TREATMENT 183 (2020): 268–75. http://dx.doi.org/10.5004/dwt.2020.25242.

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38

Bodkhe, S. Y. "A modified anaerobic baffled reactor for municipal wastewater treatment." Journal of Environmental Management 90, no. 8 (June 2009): 2488–93. http://dx.doi.org/10.1016/j.jenvman.2009.01.007.

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39

Al Smadi, Bashar M., Wissam Al-Hayek, and Husam A. Abu Hajar. "Treatment of Amman Slaughterhouse Wastewater by Anaerobic Baffled Reactor." International Journal of Civil Engineering 17, no. 9 (March 5, 2019): 1445–54. http://dx.doi.org/10.1007/s40999-019-00406-5.

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40

Grobicki, A., and D. C. Stuckey. "The role of formate in the anaerobic baffled reactor." Water Research 23, no. 12 (December 1989): 1599–602. http://dx.doi.org/10.1016/0043-1354(89)90126-7.

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41

Liu, R. R., Q. Tian, B. Yang, and J. H. Chen. "Hybrid anaerobic baffled reactor for treatment of desizing wastewater." International Journal of Environmental Science & Technology 7, no. 1 (December 1, 2009): 111–18. http://dx.doi.org/10.1007/bf03326122.

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42

Jing, Ling, and Xin Xia Wang. "Research on the Experimental Device of Combined Two-Phase ABR and SBR." Applied Mechanics and Materials 507 (January 2014): 677–81. http://dx.doi.org/10.4028/www.scientific.net/amm.507.677.

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With the rapid development of industrial and agricultural production in China, the industrial waste water and city wastewater discharged to water environment are increasing. Anaerobic biological treatment is a low-cost wastewater treatment technology and is also a combined technology of the wastewater treatment and energy recovery, it can be used as a core part of energy production and environmental protection system, its product can be actively used to result economic value. After in-depth and systematically study the mechanism and mass transfer theory of anaerobic biological treatment technology, this paper designs anaerobic reactor of high efficiency in mass transfer, namely the anaerobic baffled - elastic packing biofilm reactor.
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43

Liu, Zheng Qin, Lei Tan, Yue Li, and Dan Li Xi. "Decolorization of Textile Wastewater Using Modified Facultative Anaerobic Baffled Reactor." Advanced Materials Research 627 (December 2012): 386–89. http://dx.doi.org/10.4028/www.scientific.net/amr.627.386.

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The study deals with a wastewater treatment system which is combination of modified facultative anaerobic baffled reactor (MFABR) and an aerobic unit. The efficient decolorization and biological degradation of the wastewater that contains commercially important cationic red 2GL (azo) in the MFABR under facultative anaerobic conditions are the research focuses. The results indicate that over 95.2% decolorization and about 54.6% COD removal efficiency can be obtained in MFABR. High dye concentration (500 mg/L) still results in over 90.6% decolorization efficiency. The main characteristics of the process are highly efficient decolorization in MFABR and greatly reducing COD in aerobic unit.
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44

Manoj, Valsa Remony, and Namasivayam Vasudevan. "Integrated modified anaerobic baffled reactor with aerobic post treatment for nutrient removal from aquaculture wastewater." Environment Conservation Journal 15, no. 1&2 (June 18, 2014): 177–84. http://dx.doi.org/10.36953/ecj.2014.151223.

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The present study is an attempt for treatment of aquaculture wastewater from indoor facilities such as hatcheries etc through integrated process. which comprises an anaerobic baffled reactor (ABR) packed with coconut coir fibre as bacterial support medium and an aerobic cascading step to aerate the effluent coming out of the anaerobic baffled reactor. The maximum COD removal obtained in coconut coir packed ABR was 96 % while in the control, it was 65 %. The maximumTotal Kjeldahl Nitrogenremoval in coconut coir packed ABR was 95 % while in the control ABR the removal was 61 %. The maximum percentage ammonia removal obtained in coconut coir packed ABR was 97 % while in the control ABR 95 % of ammonia removal was achieved. Therefore the study concludes that the process significantly reduces the nutrient load in the wastewater making it suitable for release into natural water bodies or for recirculation.
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45

Kurniawan, Allen, Yanuar Chandra Wirasembada, Ki Young Park, Young Mo Kim, Jin Hur, and Jinwoo Cho. "Estimation of biokinetic parameters in the acid fermentation of primary sludge using an anaerobic baffled reactor." Environmental Science: Water Research & Technology 4, no. 12 (2018): 1997–2011. http://dx.doi.org/10.1039/c8ew00566d.

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Biokinetic models of anaerobic baffled reactor (ABR) type-acid fermentation with a short hydraulic retention time (HRT) of four days were proposed for obtaining high concentrations of volatile fatty acids (VFAs) based on the dynamic microbial growth rate.
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46

Arvin, Amin, Morteza Hosseini, Mohammad Mehdi Amin, Ghasem Najafpour Darzi, and Younes Ghasemi. "A comparative study of the anaerobic baffled reactor and an integrated anaerobic baffled reactor and microbial electrolysis cell for treatment of petrochemical wastewater." Biochemical Engineering Journal 144 (April 2019): 157–65. http://dx.doi.org/10.1016/j.bej.2019.01.021.

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47

Djarwanti, Djarwanti. "APLIKASI PENGOLAHAN AIR LIMBAH INDUSTRI TAPIOKA DENGAN SISTIM ABR DAN UAF." Jurnal Riset Teknologi Pencegahan Pencemaran Industri 6, no. 1 (May 31, 2015): 29–34. http://dx.doi.org/10.21771/jrtppi.2015.v6.no1.p29-34.

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Dalam rangka mencegah pencemaran lingkungan beberapa industri tapioka telah menerapkan IPAL dengan sistim biologi anaerob. Pada umumnya pembuatan IPAL ini tidak dilandasi kajian faktor-faktor yang mempengaruhi dalam disain reaktor, sehingga pemilihan jenis reaktor menjadi kurang tepat.Kajian ini bertujuan membandingkan kelayakan teknis dan kelayakan ekonomis penerapan pengolahan air limbah tapioka dengan sistem ABR (Anaerobic Baffled Reactor) dan sistem UAF (Upflow Anaerobic Filter). Sistim ABR telah diterapkan di Sentra Sekalong dan sistim UAF diterapkan di Sentra Margoyoso, Jawa TengahData yang digunakan untuk penelitian bersumber pada hasil penelitian dan penerapan prototipe IPAL industri tapioka di sentra Sekalong dan sentra Margoyoso.Hasil penelitian menunjukkan bahwa sistem UAF layak menggantikan sistem ABR dalam pengolahan air limbah industri tapioka ditinjau dari segi teknis maupun ekonomis. Waktu tinggal proses degradasi bahan organik didalam sistim UAF lebih pendek sehingga volume bangunan lebih kecil, kebutuhan lahanpun menjadi lebih kecil. Untuk kapasitas 20 m3/hari biaya konstruksi sistem UAF lebih murah 47,77% dibanding sistem konvensional menggunakan ABR.
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48

Gutiérrez, Soledad, Alberto Hernández, and María Viñas. "Mechanism of Degradation of Wool Wax in the Anaerobic Treatment of Woolscouring Wastewater." Water Science and Technology 40, no. 8 (October 1, 1999): 17–23. http://dx.doi.org/10.2166/wst.1999.0375.

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Results of the anaerobic digestion of a woolscouring wastewater treatment and some considerations about the anaerobic degradation mechanisms of wool wax, are presented. A 57 litre anaerobic baffled reactor (ABR) was operated with woolscouring effluent. When organic load varied from 3 to 5 kg COD/m3 d, COD and grease removal ranged from 40 to 55% and 50 to 65%, respectively. With centrifuged effluent, COD removal was 45% to 60%. A 300 m3 ABR was built and operated during two years based on the previous laboratory results. COD removal was between 45% to 18% with organic load of 3 to 10 kg COD/m3 d. With centrifuged effluent, COD efficiencies ranged between 72% and 47%. No inhibition by long chain fatty acids was observed. Considering the results of grease content determination and TLC analysis in both reactors, it could be assumed that wool wax is hydrolyzed forming sterols and free fatty acids and that free fatty acids are degraded while sterols are accumulated in the sludge.
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49

Boopathy, Ramaraj. "Biological treatment of swine waste using anaerobic baffled reactors." Bioresource Technology 64, no. 1 (April 1998): 1–6. http://dx.doi.org/10.1016/s0960-8524(97)00178-8.

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50

Lin, Yingzi, Mingxin Huo, Jianhui Wang, and Hai Lu. "Microbial diversity in anaerobic baffled reactors treating nitrobenzene wastewater." Desalination and Water Treatment 52, no. 37-39 (August 8, 2013): 6886–93. http://dx.doi.org/10.1080/19443994.2013.827778.

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