Relevant bibliographies by topics / Anaerobic baffed reactor

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Academic literature on the topic 'Anaerobic baffed reactor'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Anaerobic baffed reactor"

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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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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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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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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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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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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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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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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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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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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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Dissertations / Theses on the topic "Anaerobic baffed reactor"

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Junior, Orlando de Carvalho. "Aprimoramento de um biofiltro aerado submerso empregado no pós-tratamento do efluente de reator anaeróbio compartimentado." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-04042016-100845/.

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O principal objeto desta pesquisa foi aprimorar a eficiência de remoção de DQO, DBO, SST e conversão de nitrogênio amoniacal de biofiltro aeróbio submerso (BF), aplicado no pós-tratamento do efluente de um reator anaeróbio compartimentado (RAC). O BF, em escala piloto, foi construído em tubos de PVC, com 0,40 m de diâmetro externo e volume útil de 190,6 L. Para a imobilização celular foram utilizadas, como material suporte, matrizes cúbicas de espuma de poliuretano, em um período total de operação de 180 dias e tempos de detenção hidráulica de 6, 4 e 12 horas, respectivamente. O trabalho de investigação foi dividido em duas fases: na fase I o BF operou por 55 dias com TDH de 6 horas, para a transferência de OD para o sistema foi utilizado uma câmara de saturação não pressurizada; na fase II, o BF operou por 28 dias com TDH de 6 horas; por 30 dias com TDH de 4 horas e no período restante por 67 dias com TDH de 12 horas. Nessa fase a câmara de saturação foi inicialmente removida por não atender à demanda de OD necessária para manter condições aeróbias no interior do BF; foi injetado ar comprimido diretamente no sistema. Foram alcançadas eficiências médias de remoção de DQOb, DBOb e SST; na fase I 32,4%, 39,2% e 62% com concentrações médias no efluente bruto de 143,7 mg DQOb/L, 101,2 mg DBOb/L e 25,1 mg SST/L, respectivamente. Nessa fase, não foi detectada eficiência de conversão de nitrogênio amoniacal. Na fase II, operando com TDH de 6 horas, o BF alcançou eficiências médias de remoção de DQOb, DBOb e SST de 74%, 85% e 85% com concentrações médias no efluente bruto de 63 mg DQOb/L, 15 mg DBOb/L e 13 mg SST/L, respectivamente. Nesse período também não foi detectado processo de nitrificação. Para TDH de 4 horas, as eficiências média de remoção de DQOb, DBOb e SST foram 77%, 70% e 71%, com concentrações médias no efluente bruto de 57 mg DQOb/L, 27 mg DBOb/L e 17 mg SST/L, respectivamente. Durante esse período também não ocorreu conversão de nitrogênio amoniacal. Na fase final, em que o BF operou com TDH de 12 horas, foram encontradas eficiências médias de remoção de DQOb, DBOb e SST de 83%, 73% e 86% com concentrações médias no efluente bruto de 42 mg DQOb/L, 36 mg DBOb/L e 9 mg SST/L, respectivamente. Nesse período a eficiência média de conversão de nitrogênio amoniacal foi de 57,8% com concentração média de 10 mg N-amoniacal/L no efluente bruto. A espuma de poliuretano foi adequada para imobilização da biomassa aeróbia, porém, a lavagem do leito foi dificultada pela mesma devido à sua alta capacidade de absorção. A injeção direta de ar no sistema resultou em considerável aumento da eficiência, produzindo efluente bastante clarificado.
The main object of this research was the removal efficiency improvement of COD, BOD, TSS and ammonia nitrogen conversion in a Submerged Aerated Biofilter (BF), used in the effluent post-treatment of an Anaerobic Baffed reactor (ABR). The BF, was built in pilot scale by PVC tubes with 0,40 m of external diameter and useful volume of 190,6 L. Cubic matrices of polyurethane foam with were used as support for cellular immobilization in an operation period of 180 days with HDT of 6, 4 and 12 hours, respectively. The investigations period was shared in two phases: BF in the phase I operated for 55 days with HDT of 6 hours and the oxygen transferring was done using a chamber not pressured; BF in the phase II operated for 28 days with HDT of 6 hours, 30 days with HDT of 4 hours and on the rest of the investigation period (67 days) with HDT of 12 hours. In this phase the chamber was initially removed due to not attending the DO demand necessary to keep aerobic condition into the BF and, compressed air was directly injected at the system. The removal averages efficiencies of CODr, BODr and SST in the phase I were 32,4%, 39,2% and 62% with average concentrations in the raw effluent of 146 mg CODr/L, 101,2 mg BODr/L and 25,1 mg TSS/L, respectively. Ammonia nitrogen conversion efficiency wasn\'t detected in this. In the phase II, operating with HDT of 6 hours, BF reached averages efficiencies of CODr, BODr and SST of 74%, 85% and 85% with averages concentrations in the raw effluent of 63 mg CODr/L, 15 mg BODr/L and 13 mg TSS/L, respectively. Nitrification process wasn\'t detected in this period too. For HDT of 4 hours, the removal averages efficiencies of CODr, BODr and SST were 77%, 70% and 71% with average concentrations in the raw effluent of 57 mg CODr/L, 27 mg BODr/L and 17 mg TSS/L, respectively. During this period ammonia nitrogen conversion also not occurred. In the ending phase, where BF operated with HDT of 12 hours, removal averages efficiencies found of CODr, BODr and TSS were 83%, 73% and 86% with averages concentrations in the raw effluent of 42 mg CODr/L, 36 mg BODr/L and 9 mg TSS/L, respectively. In this period the ammonia nitrogen conversion medium efficiency was 57,8% with medium concentration in the raw effluent of 10 mg N-ammonia/L. The polyurethane foam was appropriated for aerobic biomass immobilization however the bed washing was harmed by the same one due to its high absorption capacity. The direct air injection into the system resulted in a considerable efficiency increase producing a sufficiently clearly effluent.
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Grobicki, Ania Maria Wanda. "Hydrodynamic characteristics and performance of the anaerobic baffled reactor." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/7406.

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Intrachandra, Narisara. "The hydrodynamics of the anaerobic baffled reactor with dilute wastewaters." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393631.

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Nachaiyasit, Suyanee. "The effect of process parameters on reactor performance in an anaerobic baffled reactor." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481427.

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Freese, Lucy Helen. "The treatment of sulphate laden wastewaters in the anaerobic baffled reactor." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271540.

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Barber, William Pablo. "Effect of nitrate and sulphate on the performance of an anaerobic baffled reactor." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311601.

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Marin, Hernandez Juan. "Treatment of dilute aircraft deicing fluid (ADP) using an anaerobic baffled reactor (ABR)." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26972.

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Successful treatment of low strength aircraft deicing fluid (ADF) was achieved using the Anaerobic Baffled Reactor (ABR), under different hydrological retention times (HRT) and COD influent concentrations. A total of 17 experimental runs were conducted in continuous mode, achieving COD removal efficiencies of over 75% for most of the conditions tested. During this experiment different ADF concentrations (0.04%, 0.07%, and 0.13% v/v) were continuously fed at different HRTs (24, 12, 6 and 3 hrs) at organic loading rates (OLR) varying between 0.3 and 6 kg COD/m3/d. The performance of the reactor was determined by the COD removal efficiency at the different OLRs. The best COD removal was reached at high COD influent concentrations and HRTs, for the lowest HRTs essayed COD removal efficiency dropped to an average of 65% for the 3 COD influent concentrations tested. Methane production potential were close to the theoretical value of 0.39 L CH4/g COD removed at 35°C. The effect of biomass pre-acclimation was also evaluated and it was found to be effective in increasing specific acetoclastic activity for this type of wastewater in order to reduce the time needed for acclimation. (Abstract shortened by UMI.)
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Shaw, Christopher B. "A comparison of two single-vessel reactor types for the treatment of textile wastes." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/34697.

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The feasibility of using a single vessel reactor for the biological treatment of recalcitrant compounds, namely reactive azo dyes discharged by the textile finishing industry was investigated. A synthetic effluent was derived from real processes to give reproducibility throughout the experimental period. The literature review found that a sequenced treatment of anaerobic then aerobic redox environments was required for the decolourisation and mineralisation of the dyes. Two biological reactor types were accordingly designed, built and tested, the sequencing batch reactor (SBR) and the hybrid anaerobic baffled reactor (HABR).
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Ozcan, Onur Yilmaz. "Development of an Anaerobic-Phototrophic Bioreactor System for Wastewater Treatment." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6559.

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For decades, mainstream domestic wastewater treatment has relied on activated sludge processes to remove organic matter, and on biological nutrient removal systems like the A2/O process to remove nutrients. Recently, membrane filtration was also added to the realm of possible technologies for domestic wastewater treatment, with aerobic membrane bioreactors (MBRs) becoming increasingly popular, especially for decentralized, and small to medium scale applications. However, the aerobic activated sludge and MBR processes, which are often combined with biological nutrient removal processes, have high energy costs associated with supplying oxygen to the process, and end up converting the organic matter into CO2 and high amounts of microbial biomass, instead of more useful byproducts. In order to remedy the aforementioned shortcomings of the aerobic processes, anaerobic wastewater treatment has been a focus of research, with anaerobic baffled reactors (ABRs) and anaerobic membrane bioreactors (AnMBRs) having shown promise for achieving acceptable organic matter removal performance, along with potential to be energy neutral or positive through biogas production. In addition, phototrophic technologies, such as algal photobioreactors, have recently been shown to be able to remove nutrients from waste streams, while at the same time having the potential to be used as feedstock to produce biofuels. In this dissertation, a novel concentrically-baffled reactor (CBR) was designed that has the potential to reduce heat loss by transfering more of the heat between reactor zones than traditional baffled reactor designs, which will increase energy efficiency for heated systems. A prototype CBR was operated abiotically under varying hydraulic retention times (HRTs) from 4 h to 24 h, and achieved over 90% removal of total suspended solids (TSS) for all HRTs tested with feed particle sizes below 1.7 mm. In parallel with the baffled reactor research, phototrophic membrane bioreactors (PMBRs) were tested with low aeration conditions to decrease their energy demand, which resulted in nitrification-dominated systems. A phototrophic technology was developed for increasing the pH of waste streams to potentially aid pH-sensitive nutrient recovery processes. Phototrophic pH increase from 6.42±0.13 to 8.87±0.06 was achieved using batch reactors, and an increase of pH from 6.73 to 8.61 was recorded during a continuous reactor trial. Finally, the CBR was combined with a post-CBR membrane filtration process, and two PMBRs treating the effluent and permeate streams from the CBR in order to achieve complete organic matter and nutrient removal. The combined systems were tested both for high strength-high HRT and low strength-low HRT scenarios. Using the combined CBR-PMBR system, over 90% TN and TP removal were possible for 10 d HRT operation at high-strength feed conditions, with post-CBR membrane filtration. COD removal over 90% was possible for both high-strength and low-strength scenarios under all conditions tested.
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Grobbelaar, Loreen. "Treatment of biodiesel wastewater in a hybrid anaerobic baffled reactor microbial fuel cell (ABR-MFC) system." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/2812.

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Thesis (Master of Engineering in Chemical Engineering)--Cape Peninsula University of Technology, 2019.
The biodiesel industry produces large volumes of biodiesel wastewater (BDWW) during the purification of crude biodiesel. This wastewater is characterised by high concentrations of chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solids (TSS), and fats, oils and greases (FOG) which in turn defines BDWW as a highly polluted effluent. The low nitrogen and phosphorous content of BDWW creates an unfavourable environment for the growth of microorganisms, thereby making it difficult to degrade naturally. Biodiesel companies discharge untreated non-compliant wastewater directly to the municipal sewer system. Treatment prior to discharge is a necessity since the disposal of untreated BDWW may raise serious environmental concerns (i.e. disturbance of biological ecosystems) resulting in penalties liable by non-compliant companies due to the implementation of the waste discharge charge system (WDCS) which is regulated by the industrial waste discharge standard limits in South Africa (SA). This study aimed to combine the advantages of the conventional anaerobic baffled reactor (ABR) system with microbial fuel cell (MFC) technology resulting in an innovative technology used to treat high strength industrial BDWW at ambient conditions. Many studies have reported effective treatment of BDWW, however to date literature implementing an ABR equipped with MFC technology has not been reported. The main objectives of the study were to determine which parameters do not meet the industrial wastewater discharge standard limits, whether pH and carbon:nitrogen:phosphorous (C:N:P) ratio adjustments will suffice prior to treatment with the ABR-MFC, the maximum power density (PD) as well as to determine the treatment efficiency of the ABR-MFC.
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Book chapters on the topic "Anaerobic baffed reactor"

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Watari, T., P. T. Thao, Y. Hirakata, M. Hatamoto, D. Tanikawa, K. Syutsubo, N. L. Huong, N. M. Tan, M. Fukuda, and T. Yamaguchi. "Process Performance and Microbial Community Structure of an Anaerobic Baffled Reactor for Natural Rubber Processing Wastewater Treatment." In Lecture Notes in Civil Engineering, 245–52. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58421-8_39.

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Hassan, Siti Roshayu Binti, Mohamad Johari Abu, and Irvan Dahlan. "Industrial Wastewater Treatment." In Handbook of Research on Resource Management for Pollution and Waste Treatment, 318–38. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0369-0.ch014.

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The development of effective and simple methods for treating wastewater is a challenging task for environmental engineers. In this chapter, a novel modified anaerobic hybridized baffled (MAHB) bioreactor, which is a combination of regular suspended-growth and fixed biofilm systems together with the modification of baffled-reactor configurations, was proven to be a modest bioreactor for wastewater treatment rather than the commercial anaerobic baffled reactor (ABR). The significant advantages of this bioreactor were its ability to nearly realize the multi-stages anaerobic theory, allowing different bacterial groups to develop under more favourable conditions, reduced sludge bed expansion, no special gas or sludge separation required, and high stability to organic and toxic shock loads. The compartmentalization of this bioreactor results in a buffering zone between the primary acidification zone and active methanogenesis zone, and provided the strong ability to resist shock loads which broaden the usage of multi-phase anaerobic technology for industrial wastewater treatment.
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Stuckey, David C. "Anaerobic Baffled Reactor (ABR) for Wastewater Treatment." In Environmental Anaerobic Technology, 163–84. IMPERIAL COLLEGE PRESS, 2010. http://dx.doi.org/10.1142/9781848165434_0008.

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Ahmad, Imran, Norhayati Abdullah, Shreeshivadasan Chelliapan, Ali Yuzir, Iwamoto Koji, Anas Al-Dailami, and Thilagavathi Arumugham. "Effectiveness of Anaerobic Technologies in the Treatment of Landfill Leachate." In Solid Waste Management [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94741.

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Improper Solid Waste Management leads to the generation of landfill leachate at the landfills. To reduce the negative impacts of highly toxic and recalcitrant leachate on the environment, several techniques have been used. A lot of research is conducted to find suitable methods for the treatment of landfill leachate such as biological processes, chemical oxidation processes, coagulation, flocculation, chemical precipitation, and membrane procedures. The biological process is still being used widely for the treatment of leachate. The current system of leachate treatment consists of various unit processes which require larger area, energy and cost. In addition, the current aerobic treatment is not able to treat entirely the pollutants which require further treatment of the leachate. Anaerobic wastewater treatment has gained considerable attention among researchers and sanitary engineers primarily due to its economic advantages over conventional aerobic methods. The major advantages of anaerobic wastewater treatment in comparison to aerobic methods are: (a) the lack of aeration, which decreases costs and energy requirements; and (b) simple maintenance and control, which eliminates the need for skilled operators and manufacturers. Several anaerobic processes have been used for leachate treatment such as up-flow anaerobic sludge blanket (UASB) reactor, anaerobic filter, hybrid bed reactor, anaerobic sequencing batch reactor and Anaerobic baffled reactor. The following chapter provides an insight to the solid waste management at the landfills, generation of leachate and details of some of the highly efficient anaerobic treatment systems that are used for the overall treatment of landfill leachate.
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Abubakar, U., M. Muhammad, F. Ibrahim, M. Ajibike, and A. Ismail. "Performance of a bench scale anaerobic baffled reactor operated at ambient temperatures." In Civil, Offshore and Environmental Engineering, 215–19. CRC Press, 2016. http://dx.doi.org/10.1201/b21942-43.

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Abubakar, U. A., M. M. Muhammad, F. B. Ibrahim, M. A. Ajibike, and A. Ismail. "Performance of a bench scale anaerobic baffled reactor operated at ambient temperatures." In Engineering Challenges for Sustainable Future, 215–19. CRC Press, 2016. http://dx.doi.org/10.9774/gleaf.9781315375052_40.

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Malakahmad, A., N. Ahmad Basri, and S. Md Zain. "The application of an anaerobic baffled reactor to produce biogas from kitchen waste." In Waste to Energy, 19–28. WIT Press, 2015. http://dx.doi.org/10.2495/978-1-78466-060-4/003.

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Conference papers on the topic "Anaerobic baffed reactor"

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DIKSHIT, A. K., M. S. CHAUHAN, and S. S. SINGH. "TREATMENT OF DISTILLERY SPENTWASH BY ANAEROBIC BAFFLED REACTORS." In Proceedings of the International Conference on CBEE 2009. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814295048_0011.

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Chang, Sheng, Jianzheng Li, Feng Liu, and Gefu Zhu. "Performance and Characteristics of Anaerobic Baffled Reactor Treating Soybean Wastewater." In 2008 2nd International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2008. http://dx.doi.org/10.1109/icbbe.2008.1030.

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Ma, Li, Chun-du Wu, Qing-jie Xie, Guo-feng Zhu, and Chun-du Wu. "Study on Hydrodynamic Characteristics of the Split-Feed Anaerobic Baffled Reactor." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5515611.

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Malakahmad, A., S. M. Zain, and N. E. A. Basri. "Biomethanation of kitchen waste and sewage sludge in anaerobic baffled reactor." In 2012 IEEE Symposium on Humanities, Science and Engineering Research (SHUSER). IEEE, 2012. http://dx.doi.org/10.1109/shuser.2012.6268835.

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Hu, Xi-Quan, and Zhao-Hua Li. "Operational Characteristics of an Anaerobic Baffled Reactor Treating Low Strength Wastewater." In 2008 2nd International Conference on Bioinformatics and Biomedical Engineering (ICBBE '08). IEEE, 2008. http://dx.doi.org/10.1109/icbbe.2008.1113.

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Zhong, Qijun, and Bo Yang. "Anaerobic Baffled Reactor (ABR) for Alkali-minimization Dyeing-printing Wastewater Biodegradation." In 2012 International Conference on Biomedical Engineering and Biotechnology (iCBEB). IEEE, 2012. http://dx.doi.org/10.1109/icbeb.2012.65.

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Jiankun Zhang. "Study on straw pulp gray water treatment by Anaerobic Baffled Reactor." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5965246.

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Li Hui-ting and Li Yong-feng. "Performance of a hybrid anaerobic baffled reactor (HABR) treating brewery wastewater." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5536308.

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Ahamed, A., C. L. Chen, and J. Y. Wang. "Effluent recycling of a multiphase anaerobic baffled reactor treating food waste." In WASTE MANAGEMENT 2014. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/wm140401.

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Malakahmad, A., N. Ahmad Basri, and S. Md Zain. "An application of anaerobic baffled reactor to produce biogas from kitchen waste." In WASTE MANAGEMENT 2008. Southampton, UK: WIT Press, 2008. http://dx.doi.org/10.2495/wm080671.

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