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Journal articles on the topic 'Wastewater treatment UASB'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Cairns, Ryland, and Paul Mead. "Performance of a UASB Effluent Treatment Plant Treating Malt Ingredient Manufacturing Wastewater." Environmental Management and Sustainable Development 6, no. 2 (2017): 198. http://dx.doi.org/10.5296/emsd.v6i2.11314.

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Anaerobic Digestion has gained popularity in recent years due to its significant contribution towards achieving waste management and renewable energy targets. One particular technology that has been widely used in the treatment of high strength organic wastewaters across a wide range of industries is upflow anaerobic sludge blankets (UASBs). A malt ingredients manufacturing factory has successfully applied this technology as a cost effective way to treat their high strength effluent, however unlike other industries there is a lack of research regarding the wastewater characterisation or UASB p

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2

Pol, Look Hulshoff, and Gatze Lettinga. "New Technologies for Anaerobic Wastewater Treatment." Water Science and Technology 18, no. 12 (1986): 41–53. http://dx.doi.org/10.2166/wst.1986.0162.

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Presently anaerobic wastewater treatment is becoming an accepted simple technology for the treatment of a variety of wastewaters. Of the different treatment systems that have been developed the UASB process (Upflow Anaerobic Sludge Blanket) has found the widest application. Almost all of the more than 60 full scale UASB reactors in operation now, are running satisfactorily. The excellent sludge retention generally found in UASB-reactors is obtained by sludge granulation, which can be seen as a sludge immobilization process. The presently available insight into the sludge granulation process is

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3

Parashar, Varsha, Ashok K. Sharma, Sarita Sharma, and Sanjay Verma. "Mathematical Modelling of Uasb Reactor for Dairy Wastewater Treatment." International Journal of Scientific Research 3, no. 8 (2012): 151–53. http://dx.doi.org/10.15373/22778179/august2014/43.

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4

Lettinga, G., and L. W. Hulshoff Pol. "UASB-Process Design for Various Types of Wastewaters." Water Science and Technology 24, no. 8 (1991): 87–107. http://dx.doi.org/10.2166/wst.1991.0220.

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In this paper the design of UASB-reactors is discussed for different types of wastewater, viz. industrial soluble non-complex wastewaters, SS-rich complex wastewaters and domestic sewage. The paper not only deals with the UASB-reactor design, but also with other treatment steps, pre- as well as post-treatment, that are required for as complete as possible overall wastewater purification.

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5

Rintala, J. "High-Rate Anaerobic Treatment of Industrial Wastewaters." Water Science and Technology 24, no. 1 (1991): 69–74. http://dx.doi.org/10.2166/wst.1991.0011.

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Anaerobic mesophilic treatment of synthetic (a mixture of acetate and methanol) and thermomechanical pulping (TMP) wastewater was studied in laboratory-scale upflow anaerobic sludge blanket (UASB) reactors and filters with emphasis on the process start-up. The reactors were inoculated with nongranular sludge. The start-up of mesophilic and thermophilic processes inoculated with mesophilic granular sludge was investigated in UASB reactors fed with diluted vinasse. The start-up proceeded faster in the filters than in the UASB reactors with TMP and synthetic wastewater. Loading rates of over 15 k

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6

Sigge, G. O., T. J. Britz, P. C. Fourie, and C. A. Barnardt. "The efficacy of ozone as a pre- and post-treatment option for UASB-treated food processing wastewaters." Water Science and Technology 52, no. 1-2 (2005): 167–73. http://dx.doi.org/10.2166/wst.2005.0513.

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The efficiency of ozone as a pre- and post-treatment to UASB treatment was investigated, followed by a study into UASB reactor performance with ozonated wastewater as substrate. Combinations of pre- and/or post-ozonation with UASB treatment gave better results than ozonation or UASB alone and COD reductions of 53.0–98.9% were achieved for treatment of canning and winery wastewaters. A UASB reactor was fed with pre-ozonated cannery wastewater for over 70 d. COD removal improved from between 58.8 and 64.4% to between 85.3 and 91.8% after pre-ozonated substrate feed commenced. Subsequent increase

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7

Yan, Li Long, Ying Zhang, Chuan Ju Li, and Xue Han. "Effectiveness Research of UASB Treatment Piggery Wastewater." Advanced Materials Research 183-185 (January 2011): 188–92. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.188.

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In order to efficient treatment swine wastewater of chemical oxygen demand(COD) of high concentration, ammonium nitrogen (NH4+-N) of high concentration and high suspended solids (SS) , Up-flow Anaerobic Sludge Bed (UASB) were fed with piggery wastewater and investigated removal effect of COD, SS, NH4+-N, TP. The results showed that, UASB can effectively remove COD and SS in the pig farm wastewater. The corresponding removal rate was respectively 82.36% and 70%. UASB was poor on removal effect of NH4+-N and total phosphate (TP), due to the lack of anaerobic, anoxic environment. UASB is able to

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8

Zoutberg, George R., and Zerrin Eker. "Anaerobic treatment of potato processing wastewater." Water Science and Technology 40, no. 1 (1999): 297–304. http://dx.doi.org/10.2166/wst.1999.0060.

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This paper deals with the anaerobic treatment of wastewater from the potato processing industry. It is shown that treatment of this type of wastewater in UASB reactors has successfully been applied at many companies. Apart from the Biothane® UASB technology a new anaerobic technology is presented: the Biobed® EGSB technology. Presented is the first application of this technology in the potato processing industry and also a comparison is made between this technology and the Biothane® UASB technology.

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9

Gnanadipathy, A., and C. Polprasert. "Treatment of a Domestic Wastewater with UASB Reactors." Water Science and Technology 27, no. 1 (1993): 195–203. http://dx.doi.org/10.2166/wst.1993.0047.

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This study investigated a feasibility of employing pilot-scale upflow anaerobic sludge blanket (UASB) reactors to treat a domestic (or relatively low-strength) wastewater. Four 30-1 UASB reactors, each with a 0.15-m inner diameter and 2-m height were used in this study which was conducted at an average ambient temperature of 30°C. Three reactors were inoculated with different types of seed sludge, namely: sludge from a facultative waste stabilization pond, anaerobically digested sludge and sludge from a UASB reactor treating a distillery wastewater. The fourth reactor was started without inocu

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10

Wong, F. S., W. Fang, Y. P. Moy, and S. Lin. "The application of UASB-MBR with partial nitrification-denitrification in wastewater reclamation in warm climate." Journal of Water Reuse and Desalination 2, no. 2 (2012): 102–8. http://dx.doi.org/10.2166/wrd.2012.027.

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An up-flow anaerobic sludge blanket (UASB) process has been successfully applied for the treatment of municipal wastewaters with methane production for energy recovery. A membrane bioreactor (MBR) was coupled to the UASB to further improve carbon removal. Nitrogen removal was conducted with the UASB-MBR integrated system under optimum conditions which promoted nitrogen removal through a shortcut nitrification-denitrification process. The process achieved 69–86% of soluble chemical oxygen demand (CODsolu) removal and 56–80% of total nitrogen (TN) removal. Biogas production was between 25 and 76

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11

Zhang, Yongli, Qingyu Wang, Kai Lin, and Xiaolang Chen. "Treatment of Preserved Wastewater with UASB." MATEC Web of Conferences 67 (2016): 07036. http://dx.doi.org/10.1051/matecconf/20166707036.

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12

Annachhatre, Ajit P., and Prasanna L. Amatya. "UASB Treatment of Tapioca Starch Wastewater." Journal of Environmental Engineering 126, no. 12 (2000): 1149–52. http://dx.doi.org/10.1061/(asce)0733-9372(2000)126:12(1149).

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13

Wiegant, W. M. "Experiences and potential of anaerobic wastewater treatment in tropical regions." Water Science and Technology 44, no. 8 (2001): 107–13. http://dx.doi.org/10.2166/wst.2001.0477.

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In this article an overview is given on the experience with anaerobic treatment of domestic wastewater in the tropics, with emphasis on the situation in India. Some design criteria and their impact on the costs of UASB reactors are discussed. The operational results of a number of full-scale reactors are presented. The applicability of the UASB, in combination with different post-treatment units to comply with a variety of effluent standards is compared with other systems. From the available data it is concluded that, if nitrogen removal is not required, a UASB system, followed by a polishing

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14

Han, Biao, Wei Zhao, Zheng Xian Pan, Wei Wei Zhang, and Xian Jian Lu. "UASB-CASS-Coagulation Treatment and its Application in Cassava Starch Wastewater Treatment." Advanced Materials Research 955-959 (June 2014): 2378–83. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2378.

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Aiming to the problem that the removal rates of COD, BOD5, SS is low, economic benefits and efficiency are poor on traditional treatment of cassava starch wastewater, a new treatment which combines UASB,CASS with coagulation was presented. The UASB anaerobic reactor is used to remove most of the wastewater containing organic carbon as a pretreatment. Then, CASS aerobic treatment equipment is presented to dislodge organic carbon left and materials such as nitrogen and phosphorus as a secondary process. The coagulation process combined with UASB and CASS was applied to eliminate the residual org

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15

Yang, P. Y., L. J. Chang, and S. A. Whalen. "Anaerobic/Aerobic Pretreatment of Sugarcane Mill Wastewater for Application of Drip Irrigation." Water Science and Technology 24, no. 9 (1991): 243–50. http://dx.doi.org/10.2166/wst.1991.0253.

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Because of inappropriate management of sugarcane mill wastewater in Hawaii, odor problems and handicaps to wastewater reuse for drip irrigation and sugarcane washing have developed. Based on the previous work on wastewater characterization and relevant literature review, a combined anaerobic (UASB) and aerobic (EAFB) treatment of supernatant of settled sugarcane mill wastewater for the application of drip irrigation was proposed and investigated. It has been found that the system can efficiently (≥ 99%) remove the organics and solids in wastewater within two days of hydraulic retention time pr

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16

Lettinga, Gatze, and Look Hulshoff Pol. "Advanced Reactor Design, Operation and Economy." Water Science and Technology 18, no. 12 (1986): 99–108. http://dx.doi.org/10.2166/wst.1986.0166.

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Of the high rate anaerobic wastewater treatment systems the UASB (Upflow Anaerobic Sludge Blanket) reactor has found the widest application. Therefore the attention with respect to design, operation and economy will be focussed on this reactor type. In designing a UASB reactor specific attention is needed for the GSS (Gas-Solids Separator) device and the feed inlet system. For soluble wastewater generally no phase separation is required. Only for wastewaters high in suspended solids pre-acidification in a separate acidification reactor can be beneficial. Increasing attention is given to the de

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17

Kootenaei, Farshad Golbabaei, Gholamreza Darvishi, and Mohammad Javad Bayani. "Treatment of canned fish factory wastewater by upflow anaerobic sludge blanket (uasb) reactors." World Journal of Environmental Research 5, no. 1 (2015): 158. http://dx.doi.org/10.18844/wjer.v5i1.98.

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<p>Application of UASB method for wastewater treatment of canned fish factory reduces the costs of pre-treatments processes such as neutralization, and also reduced the costs of final aeration process. In this study, an UASB reactor which was equipped with a 3-phase separator system has been used. At first, a complex of anaerobic digester sludge and return sludge of activated sludge was added to reactor with ratio of 25 to 15. Then, the wastewater of factory entered into the reactor with inlet Organic Loading Rate (OLR) of 0.5 kg/m3.day which was increased gradually up to 4 kg/m3.day. Th

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18

Mukimin, Aris. "The Energy Production and Efficiency Treatment of ML-MFC Using High Organic Content Wastewater." E3S Web of Conferences 202 (2020): 10005. http://dx.doi.org/10.1051/e3sconf/202020210005.

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Microbial fuel cell (MFC) is a technology that is not only able to produce energy but also treats wastewater. The membraneless microbial fuel cell (ML-MFC) system was developed to avoid the use of membranes that are prone to clogging and are less applicable. The reactor was made and arranged in two chambers connected by pipes and the fluid flow rate is set using a peristaltic pump. Three anodes (carbon cloth) were paired with a carbon-Pt cathode GDL (Gas Diffusion Layer) type. The reactor was applied to wastewater taken from the industrial WWTP unit at the point before and after UASB. ML-MFC r

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19

Mukimin, Aris. "The Energy Production and Efficiency Treatment of ML-MFC Using High Organic Content Wastewater." E3S Web of Conferences 202 (2020): 10006. http://dx.doi.org/10.1051/e3sconf/202020210006.

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Microbial fuel cell (MFC) is a technology that is not only able to produce energy but also treats wastewater. The membraneless microbial fuel cell (ML-MFC) system was developed to avoid the use of membranes that are prone to clogging and are less applicable. The reactor was made and arranged in two chambers connected by pipes and the fluid flow rate is set using a peristaltic pump. Three anodes (carbon cloth) were paired with a carbon-Pt cathode GDL (Gas Diffusion Layer) type. The reactor was applied to wastewater taken from the industrial WWTP unit at the point before and after UASB. ML-MFC r

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20

Yuan, Ji Gang, Bi Rong Wang, and Cheng Duan Wang. "Study on Treatment of Dye Wastewater by UASB-Biological Contact Oxidation Process." Advanced Materials Research 627 (December 2012): 390–93. http://dx.doi.org/10.4028/www.scientific.net/amr.627.390.

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A continuously fed stainless steel anaerobic UASB and biological contact oxidation reactor were used in sequence for the experimentation. Dye wastewater which initial COD was 2850mg/L, the COD remove ratio reached to 72% by UASB, COD remove ratio reached to 99% by Biological Contact Oxidation pond. NV (Volume loading) of UASB reached to 1.83 kg COD/ (m3•d), NV of Biological Contact Oxidation pond reached to 1.12 kg COD/ (m3•d). Considering the development of UASB and biological contact oxidation，a dye wastewater treatment process was proposed.

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21

Behling, E., A. Diaz, G. Colina, et al. "Domestic wastewater treatment using a UASB reactor." Bioresource Technology 61, no. 3 (1997): 239–45. http://dx.doi.org/10.1016/s0960-8524(97)00148-x.

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22

Li, Yu-You, Herbert H. P. Fang, Tong Chen, and Ho-Kwong Chui. "UASB Treatment of Wastewater Containing Concentrated Benzoate." Journal of Environmental Engineering 121, no. 10 (1995): 748–51. http://dx.doi.org/10.1061/(asce)0733-9372(1995)121:10(748).

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23

Wang, Hong Fen. "Treatment of Sweet Potato Starch Wastewater with UASB." Advanced Materials Research 699 (May 2013): 234–37. http://dx.doi.org/10.4028/www.scientific.net/amr.699.234.

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A pilot-scale upflow anaerobic sludge blanket (UASB) reactor was used to study the sweet potato starch wastewater treatment performance and its influencing factors. Under normal temperature conditions, the operating parameters of sweet potato starch wastewater from UASB treatment was optimized, and the better conditions from different influent CODcr concentrations was obtained. The impacts from trace elements MgCl2, FeCl2, CoCl2, NiCl2 on physiological and biochemical characteristics of anaerobic granular sludge was developed.

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24

Yu, Lu Ji, Hui Ying Wang, Hong Jie Song, De Fang Kong, and Tao Chen. "Performance of a Pilot-Scale Hydrolysis Acidification and Improved UASB Process for the Treatment of Alcohol Wastewater: Sludge Granulation and Treatment Efficiency." Advanced Materials Research 726-731 (August 2013): 2246–51. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2246.

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A system termed hydrolysis acidification-improved upflow anaerobic sludge blanket (HA-IUASB) was developed for alcohol wastewater treatment. The improvements of the UASB were that: a reflux pipe was set below the three-phase separator, and the mud mixture treated by the granular sludge bed returned into the water inlet.The improved UASB starts up completely after 61 days operation and the COD removal rate is between 70~96% during startup stage. The mature granule size reachs 3 mm and the methanogenic bacteria inside are mainly bacillus and cocci through Scanning Electron Microscope (SEM) obser

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25

Ma, Zhan Sheng, Jing Huan Ma, Ying Liu, Qing Tong Ren, and Wei Xing Li. "Process Research of Ethanol Wastewater Treatment." Advanced Materials Research 807-809 (September 2013): 1497–500. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.1497.

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The ethanol wastewater from one certain chemical plant in Hebei province was treated by the combined process, up-flow anaerobic sludge blanket (UASB) + anoxic/oxic (AN/O) + membrane bioreactor (MBR) + reverse osmosis (RO). The results showed that COD removal rate was 70% when the UASB residence time (HRT) was 48h; and COD removal rate reach 85%, the removal rate of NH3-N was 70%. the removal rate of total phosphorus was 95% when the AN/O residence time (HRT) was 72h; the following COD removal rate was up to 90% when the MBR residence time (HRT) was 12h. The COD of the output water after treatm

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26

Gole, Narendra Pal. "Modelling and Life Cycle Assessment of Sewage Treatment Plant (STP) in Lucknow City." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 3793–803. http://dx.doi.org/10.22214/ijraset.2021.37208.

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The implementation of wastewater treatment plants has been a challenge for most countries. Economic resources, political will, institutional strength, and cultural background are important factors that define the trajectory of pollution control in many countries. Technology is sometimes mentioned as one of the reasons hindering further development. Therefore, a key objective of this research is to evaluate the performance of a plant based on the 345 MLD Upflow Anaerobic Sludge Blanket (UASB) technology by analyzing the physical and chemical parameters of the water treated by UASB to evaluate t

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27

Macarie, H., A. Noyola, and J. P. Guyot. "Anaerobic Treatment of a Petrochemical Wastewater from a Terephthalic Acid Plant." Water Science and Technology 25, no. 7 (1992): 223–35. http://dx.doi.org/10.2166/wst.1992.0154.

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Anaerobic treatment of terephthalic acid plant wastewater was tested using two UASB reactors (T and U) and a downflow tubular fixed film reactor. UASB T was inoculated with sludge sampled from an anaerobic stabilization pond receiving waste activated sludge from a petrochemical industry treatment plant. UASB U and the fixed film reactor were inoculated with anaerobically adapted activated sludge from a municipal plant. Raw effluent had to be settled and neutralized before reactor feeding. Sedimentation resulted in 70% TSS and 37% COD removal. UASB digesters presented comparable treatment effic

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Kwarciak-Kozłowska, Anna, and January Bień. "Treatment of dairy wastewater in UASB-UF system." E3S Web of Conferences 44 (2018): 00087. http://dx.doi.org/10.1051/e3sconf/20184400087.

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The examinations concerned determination of the treatment efficiency of wastewater form dairy industry using the system which combines methane fermentation with ultrafiltration process. The study attempted to determine the effect of HRT and OLR on the degree of biodegradation of contaminants contained in the sludge examined and on the quality and amount of biogas. The anaerobic process obtained a considerable degree of the removal of organic pollutants from raw wastewater designated as COD (73.8%), BOD (81.2%) and TOC (76%). The concentrations of COD and BOD were 1053 mg/dm3 and 329 mg/dm3, re

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El-Gohary, Fatma A., and Fayza A. Nasr. "Cost-effective pre-treatment of wastewater." Water Science and Technology 39, no. 5 (1999): 97–103. http://dx.doi.org/10.2166/wst.1999.0227.

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The implementation of low-cost, simple mitigation measures is required for the timely control and sustainable management of pollution problems in developing countries. Recently, the use of anaerobic systems for wastewater treatment has received a growing attention since they represent an alternative cost-effective approach for removal of pollutants. Therefore, evaluation of the performance of an Upflow Anaerobic Sludge Blanket Reactor, as a pre-treatment step for industrial as well as domestic wastewater was the subject of this study. The results obtained showed that the performance of one-sta

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Cintoli, R., B. Di Sabatino, L. Galeotti, and G. Bruno. "Ammonium uptake by zeolite and treatment in UASB reactor of piggery wastewater." Water Science and Technology 32, no. 12 (1995): 73–81. http://dx.doi.org/10.2166/wst.1995.0461.

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A treatment plant of pre-screened piggery wastewater is tested at lab-scale using Italian zeolites (of very low cost) to strongly reduce the NH4+ from 1500 mg/l to 300–400 mg/l and anaerobic digestion in UASB and UASB-AF reactors to remove organics. The ion-exchange pre-treatment by zeolite leads to a reduction of toxicity of wastewater towards anaerobic microbial population and improves the UASB and UASB-AF reactors yields in organics reduction and gas production. The laboratory plant in this configuration reaches a COD removal range of 60–80% and a good reduction of effluent nutrients concen

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31

Nugroho, Rudi, and Agus Rifai. "KAJIAN KELAYAKAN EKONOMI RENCANA PEMBANGUNAN INSTALASI PENGOLAHAN AIR LIMBAH (IPAL) DOMESTIK KOMUNAL SISTEM UASB-DHS DI KOTA BOGOR." Jurnal Teknologi Lingkungan 13, no. 3 (2016): 269. http://dx.doi.org/10.29122/jtl.v13i3.1396.

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Air limbah rumah tangga merupakan salah satu potensi sumber pencemaran lingkungan . Berdasarkan Laporan JICA , 1995 pencemaran lingkungan di Jabodetabek adalah 80 % disebabkan oleh air limbah rumah tangga . Untuk meminimalkan pencemaran lingkungan, air limbah harus diperlakukan sebelum dibuang ke sungai . Masalah yang sering muncul dalam pengelolaan limbah domestik adalah luas lahan terbatas dan dana yang ada untuk membangun fasilitas pengolahan air limbah dan juga biaya operasional yang tinggi . Untuk mengatasi masalah tersebut, perlu pengembangan biaya rendah teknologi pengolahan air limbah

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32

Neira, K., and D. Jeison. "Anaerobic co-digestion of surplus yeast and wastewater to increase energy recovery in breweries." Water Science and Technology 61, no. 5 (2010): 1129–35. http://dx.doi.org/10.2166/wst.2010.052.

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Surplus yeast is a residue produced during brewery process, which presents high contents of organic matter. Biogas production from yeast could significantly contribute to bioenergy production in breweries, via biogas generation. Co-digestion of surplus yeast and brewery wastewater in a single treatment step would simplify the technical and economical requirements for the transformation of both residues into biogas. The feasibility of such co-digestion process was studied by means of batch tests and a lab-scale UASB reactor operation. The effect of applying three pre-treatments (thermal, chemic

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Urban, I., D. Weichgrebe, and K. H. Rosenwinkel. "Anaerobic treatment of municipal wastewater using the UASB-technology." Water Science and Technology 56, no. 10 (2007): 37–44. http://dx.doi.org/10.2166/wst.2007.732.

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The anaerobic treatment of municipal wastewater enables new applications for the reuse of wastewater. The effluent could be used for irrigation as the included nutrients are not affected by the treatment. Much more interesting now are renewable energies and the retrenchment of CO2 emission. With the anaerobic treatment of municipal wastewater, not only can the CO2 emission be reduced but “clean” energy supply can be gained by biogas. Most important for the sustainability of this process is the gathering of methane from the liquid effluent of the reactor, because the negative climate-relevant e

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34

Santiago-Díaz, A. L., and M. L. Salazar-Peláez. "Start-up phase of a UASB-septic tank used for high strength municipal wastewater treatment in Mexico." Water Practice and Technology 12, no. 2 (2017): 287–94. http://dx.doi.org/10.2166/wpt.2017.032.

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The objective of this work was to assess the performance during the start-up phase of a Upflow anaerobic sludge blanket (UASB)-septic tank for municipal wastewater treatment in Mexico City. A lab scale UASB-septic tank (62 L total volume, acrylic), consisting of three chambers treated high strength municipal wastewater at ambient temperature (16 °C–24 °C), under 72 h Hydraulic retention time (HRT) during three months. Total and soluble chemical oxygen demand (COD), total biological oxygen demand (BOD5), total solids and total suspended solids (TSS) removals were 75.2 ± 6.5%, 54.8 ± 6.7%, 64.2

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Fang, Herbert H. P., Yu You Li, and Ho Kwong Chui. "UASB Treatment of Wastewater with Concentrated Mixed VFA." Journal of Environmental Engineering 121, no. 2 (1995): 153–60. http://dx.doi.org/10.1061/(asce)0733-9372(1995)121:2(153).

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Singh, Kripa Shankar, Hideki Harada, and T. Viraraghavan. "Low-strength wastewater treatment by a UASB reactor." Bioresource Technology 55, no. 3 (1996): 187–94. http://dx.doi.org/10.1016/0960-8524(96)86817-9.

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El-Gohary, F. A., F. A. Nasr, and H. I. Aly. "Cost-Effective Pre-Treatment of Food-Processing Industrial Wastewater." Water Science and Technology 40, no. 7 (1999): 17–24. http://dx.doi.org/10.2166/wst.1999.0318.

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Performance of laboratory-scale aerobic and anaerobic systems treating food-processing wastewater was investigated. The results obtained showed that BOD and COD of wastewater discharged from a potato-chips factory can be reduced by 86% and 82% using UASB reactor at an organic loading rate (OLR) of 2.9 kg BOD/m3·d and a hydraulic retention time (HRT) of 18 hr. Corresponding results for an activated sludge system, operated at an OLR of 8.9 kg BOD/m3·d with a HRT of 6hr were 86% and 84%, respectively. Treatment of confectionery wastewater using UASB at a HRT of 12hr and an OLR of 4.4 kg BOD/m3.d

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FIA, RONALDO, ERLON L. PEREIRA, FÁTIMA R. L. FIA, DÉBORA G. EMBOABA, and EMANUEL M. GOMES. "Start-up of anaerobic reactors for slaughterhouse wastewater treatment." Engenharia Agrícola 35, no. 2 (2015): 331–39. http://dx.doi.org/10.1590/1809-4430-eng.agric.v35n2p331-339/2015.

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This study aimed to evaluate the start-up of a horizontal anaerobic fixed bed reactor (HAFBR) followed by an upflow anaerobic sludge blanket (UASB) for the slaughterhouse wastewater treatment. HAFBR was filled with bamboo rings and had 1.2 m in length, 0.10 m in diameter and volume of 7.5 L. The UASB had the volume of 15 L. The HAFBR and UASB operated at organic loading rate and hydraulic retention time average of 8.46 and 3.77 kg m-3 d-1 of COD and 0.53 and 0.98 days, respectively. During 150 days of monitoring system it was found pH 6.8, relatively high values of bicarbonate alkalinity (>

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Salazar-Peláez, M. L., J. M. Morgan-Sagastume, and A. Noyola. "Influence of hydraulic retention time on UASB post-treatment with UF membranes." Water Science and Technology 64, no. 11 (2011): 2299–305. http://dx.doi.org/10.2166/wst.2011.689.

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A pilot UASB reactor coupled with an external ultrafiltration (UF) membrane was operated under three different hydraulic retention times (HRT) for domestic wastewater treatment. The aim was to assess the HRT influence on system performance and fouling. The highest concentrations of COD, total solids, extracellular polymeric substances (EPS) and soluble microbial products (SMP) in UASB effluent and permeate were found when the UASB reactor was operated under the lowest HRT studied (4 hours); although the fulfillment of Mexican Standard for wastewater reclamation was not compromised. This fact c

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Sawajneh, Z., A. Al-Omari, and M. Halalsheh. "Anaerobic treatment of strong sewage by a two stage system of AF and UASB reactors." Water Science and Technology 61, no. 9 (2010): 2399–406. http://dx.doi.org/10.2166/wst.2010.051.

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An anaerobic treatment system that consists of an Anaerobic Filter (AF) and an Upflow Anaerobic Sludge Blanket (UASB) in series was built and operated to investigate its performance in treating strong domestic wastewater with high suspended solids fraction under Jordan's ambient temperatures of 25°C for summer and 18°C for winter. The system was operated from September 2003 until early April 2004. The system was operated at a Hydraulic Retention Time (HRT) of 4 hours for the first stage AF and 8 hours for the second stage UASB. Average CODt and CODss removal efficiencies of the AF/UASB were 58

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Rodrigues, Luciano Dos Santos, Ana Cristina Araujo Pinto, Joyce Da Cruz Ferraz Dutra, Renata Rodrigues Sampaio, Stella Rubim de Sousa, and Israel José da Silva. "Swine wastewater treatment using an anaerobic baffled (ARB) and a UASB reactor system." Semina: Ciências Agrárias 38, no. 6 (2017): 3705. http://dx.doi.org/10.5433/1679-0359.2017v38n6p3705.

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The purpose of this study was to assess the swine wastewater treatment system, consisting of the anaerobic baffled reactor (ABR), followed by the upflow anaerobic sludge blanket (UASB) reactor at full scale. The system was monitored by analyzing samples collected in the influent and effluent of ABR and UASB. The following parameters were analyzed: temperature, pH, total suspended solids (TSS), volatile suspended solids (VSS), biochemical oxygen demand (BOD), and chemical oxygen demand (COD). Averages of total removal of COD and BOD were 96.7 and 98.4%, respectively. The mean concentrations of

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Rajagopal, Rajinikanth, Mahbuboor Choudhury, Nawrin Anwar, Bernard Goyette, and Md Rahaman. "Influence of Pre-Hydrolysis on Sewage Treatment in an Up-Flow Anaerobic Sludge BLANKET (UASB) Reactor: A Review." Water 11, no. 2 (2019): 372. http://dx.doi.org/10.3390/w11020372.

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The up-flow anaerobic sludge blanket (UASB) process has emerged as a promising high-rate anaerobic digestion technology for the treatment of low- to high-strength soluble and complex wastewaters. Sewage, a complex wastewater, contains 30–70% particulate chemical oxygen demand (CODP). These particulate organics degrade at a slower rate than the soluble organics found in sewage. Accumulation of non-degraded suspended solids can lead to a reduction of active biomass in the reactor and hence a deterioration in its performance in terms of acid accumulation and poor biogas production. Hydrolysis of

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Ma, Wei. "Treatment of Alcohol Wastewater by UASB+Bio-Contact Oxidation+ICEAS Process." Advanced Materials Research 1030-1032 (September 2014): 337–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.337.

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Alcohol wastewater is a high concentration organic wastewater, the influent BOD, high COD ratio, biodegradability is very good, should take the treatment process with biological treatment as the core. UASB+Bio-contact oxidation+ICEAS process is a new technology, sewage in the reaction process, in the anaerobic - aerobic - anoxic - aerobic anaerobic alternately, for high concentration organic wastewater by removing effect is very good. UASB+Bio-contact oxidation+ICEAS process , continuous flooding, intermittent drainage, overcomes the shortcomings of SBR process intermittent inflow; ICEAS react

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Lettinga, G., A. de Man, A. R. M. van der Last, et al. "Anaerobic Treatment of Domestic Sewage and Wastewater." Water Science and Technology 27, no. 9 (1993): 67–73. http://dx.doi.org/10.2166/wst.1993.0179.

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Recent UASB-pilot plant and full scale experiences show that anaerobic pre-treatment is feasible for sewage and domestic wastewaters in tropical regions. This offers developing countries the unique opportunity to become completely self-sufficient in this respect. UASB-systems can be applied at very small and at very big scale, i.e. for off-site and (house and community) on-site treatment. Results obtained in pilot plant and full scale installations demonstrate that these systems are quite effective in removing and stabilizing organic pollutants at liquid detention times as low as 4 hrs, i.e. a

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Adisasmito, Sanggono, Carolus Borromeus Rasrendra, Hengky Chandra, and Mohammad Adimas Gunartono. "Anaerobic Reactor for Indonesian Tofu Wastewater Treatment." International Journal of Engineering & Technology 7, no. 3.26 (2018): 30. http://dx.doi.org/10.14419/ijet.v7i3.26.17456.

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An Upflow Anaerobic Sludge Blanket (UASB) reactor was used to process liquid wastes from a tofu industry with COD (Chemical Oxygen Demand) 7619 mg/L, pH 4, and TSS (Total Suspended Solid) 1035 mg/L. This work is part of efforts to clean Citarum River in West Java, Indonesia, named as Citarum Harum national program. The liquid Hydraulic Retention Time (HRT) in the reactor was varied from 2, 3, 4, and 5 days and the resulting COD outputs were 6783 mg/L, 6494 mg/L, 5806 mg/L, and 4722 mg/L respectively. The results represented up to 38% in COD reduction. Biogas was produced from the UASB Reactor

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Pradana, Hendra Andiananta. "ANAEROBIC DIGESTER VARIATION FOR BIOGAS PRODUCTION ON COFFEE WASTEWATER TREATMENT." Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 8, no. 3 (2019): 164. http://dx.doi.org/10.23960/jtep-l.v8i3.164-174.

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Wet coffee processing methods will produce waste water containing organic matter. The high content of organic matter can be utilized as biogas through the anaerobic process. Biogas becomes renewable energy source. Anaerobic digesters construction can affect removal process of wastewater pollution and biogas quantity. The research aim’s was determine the performance biogas production of digester construction on conventional digester, CSTR and UASB from coffee waste water. The conventional digester worked without temperature control system, a UASB digester, and CSTR digester worked with temperat

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Biswas, Swarup, and Umesh Mishra. "Treatment of Copper Contaminated Municipal Wastewater by Using UASB Reactor and Sand-Chemically Carbonized Rubber Wood Sawdust Column." BioMed Research International 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/5762781.

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The performance of a laboratory scale upflow anaerobic sludge blanket (UASB) reactor and its posttreatment unit of sand-chemically carbonized rubber wood sawdust (CCRWSD) column system for the treatment of a metal contaminated municipal wastewater was investigated. Copper ion contaminated municipal wastewater was introduced to a laboratory scale UASB reactor and the effluent from UASB reactor was then followed by treatment with sand-CCRWSD column system. The laboratory scale UASB reactor and column system were observed for a period of 121 days. After the posttreatment column the average remova

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Vlyssides, A., E. M. Barampouti, S. Mai, A. Stamatoglou, and E. Tsimas. "Alternative biological systems for the treatment of vinasse from wine." Water Science and Technology 62, no. 12 (2010): 2899–904. http://dx.doi.org/10.2166/wst.2010.647.

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This work studied alternative treatment schemes for the vinasse wastewater from wine distilleries aiming at overcoming the problems caused by the high nitrogen and sulfur concentrations. A plexiglas laboratory-scale upflow anaerobic sludge blanket (UASB) reactor of 20 L volume that was operated at 45°C and hydraulic retention time 1 d, was included in all the examined systems. System 1 was the conventional UASB reactor, system 2 was the UASB reactor supplemented with iron. System 3 consisted of the UASB reactor supplemented with iron and a CSTR reactor that operated under the following conditi

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von Sperling, M., and S. C. Oliveira. "Comparative performance evaluation of full-scale anaerobic and aerobic wastewater treatment processes in Brazil." Water Science and Technology 59, no. 1 (2009): 15–22. http://dx.doi.org/10.2166/wst.2009.841.

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This article evaluates and compares the actual behavior of 166 full-scale anaerobic and aerobic wastewater treatment plants in operation in Brazil, providing information on the performance of the processes in terms of the quality of the generated effluent and the removal efficiency achieved. The observed results of effluent concentrations and removal efficiencies of the constituents BOD, COD, TSS (total suspended solids), TN (total nitrogen), TP (total phosphorus) and FC (faecal or thermotolerant coliforms) have been compared with the typical expected performance reported in the literature. Th

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Jawjit, Siriuma, and Winai Liengcharernsit. "Anaerobic treatment of concentrated latex processing wastewater in two-stage upflow anaerobic sludge blanketA paper submitted to the Journal of Environmental Engineering and Science." Canadian Journal of Civil Engineering 37, no. 5 (2010): 805–13. http://dx.doi.org/10.1139/l10-029.

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This study aims to investigate treatment performance of the two-stage upflow anaerobic sludge blanket (UASB) applied to concentrated latex processing wastewater in Thailand. First, optimal conditions including the hydraulic retention time (HRT) in the acid tank and the UASB tank, pH, and temperature (mesophilic and thermophilic) were determined. It was found that the HRT at 24 h and 48 h were the optimal HRT for the acid tank and the UASB tank, respectively. The pH of the system should be controlled at 7 to prevent rubber coagulation and to achieve high treatment performance, and the mesophili

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