Combined anaerobic and activated sludge anoxic/oxic treatment for piggery wastewater

Rajagopal, Rajinikanth; Rousseau, P.; Bernet, Nicolas; Béline, Fabrice

doi:10.1016/j.biortech.2010.09.112

Cited by 58 publications

(27 citation statements)

References 12 publications

(20 reference statements)

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“…The total nitrogen in the influent was about 2000 mg L –1 , and TN in the effluent was about 202.83–316.41 mg L −1 . The average TN removal efficiencies of the whole system reached 86% and 89% when the recirculation ratios were 100% and 200%, respectively, which were relatively higher than those estimated by Rajagopal et al for piggery wastewater . The thorough and efficient denitrification in the anaerobic reactor was not only the basic premise to guarantee the removal of TN in the reactor, but also a necessary condition for the achievement of nitrification in the SBR.…”

Section: Resultsmentioning

confidence: 69%

“…The average TN removal efficiencies of the whole system reached 86% and 89% when the recirculation ratios were 100% and 200%, respectively, which were relatively higher than those estimated by Rajagopal et al for piggery wastewater. 3 The thorough and efficient denitrification in the anaerobic reactor was not only the basic premise to guarantee the removal of TN in the reactor, but also a necessary condition for the achievement of nitrification in the SBR. After the anaerobic treatment of the wastewater, TN mainly existed in the forms of ammonia and organic nitrogen and was mostly removed from the aerobic reactor.…”

Section: Effect Of Ph and Fa At The Nh 4 + -N Removal Efficiency And Narmentioning

confidence: 99%

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The treatment of animal manure wastewater by coupled simultaneous methanogenesis and denitrification (SMD) and shortcut nitrification–denitrification (SND)

Peng

Li³

2013

J of Chemical Tech & Biotech

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BACKGROUND The anaerobic–aerobic system is considered an efficient process for simultaneous removal of organic matter and nitrogen from animal manure wastewater. In this work, coupled simultaneous methanogenesis and denitrification (SMD) and shortcut nitrification–denitrification (SND) was investigated to treat animal manure wastewater having high concentrations of nitrogen and organic matter. RESULTS The best COD and NO2−‐N removal efficiency was achieved when the influent COD loading rate in the anaerobic reactor was 3 kg m‐3 d−1 and the COD/NO2−‐N ratio was above 30. It was advantageous to the treatment of high‐strength ammonia animal manure wastewater to adopt SND when the pH and free ammonia were about 8.0 and 18 mg L−1, respectively. The average efficiency of of removal COD, NH4+‐N, and total nitrogen when adopting the coupling technology was 96.7%, 94.9% and 86.5%, respectively, and the nitrite accumulation rate reached 94.55%. CONCLUSION This study suggested that it was technically feasible to adopt SMD–SND coupling technology of to treat animal manure wastewater with high concentrations of nitrogen and organic matter. © 2013 Society of Chemical Industry © 2013 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 69%

Section: Effect Of Ph and Fa At The Nh 4 + -N Removal Efficiency And Narmentioning

confidence: 99%

The treatment of animal manure wastewater by coupled simultaneous methanogenesis and denitrification (SMD) and shortcut nitrification–denitrification (SND)

Peng

Li³

2013

J of Chemical Tech & Biotech

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“…Increasing the reflux ratio increased the removal efficiency. When the reflux ratio was greater than 100%, the influence on TN removal was more significant than that for the removal of COD and NH 4 -N. TN removal in the anoxic tank was largely dependent on the concentration of NO 3 -N, which was mainly drained from the oxic unit [41].…”

Section: Optimization Of the Anoxic Tank Configurationmentioning

confidence: 95%

A Modified Bio-Ecological Process for Rural Wastewater Treatment

2017

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Limited water resources and ensuring access to clean water are critical environmental challenges, especially for the developing world. In particular, rural domestic wastewater has become a significant source for the pollution of freshwater bodies. A modified bio-ecological A2O-wetland system for rural wastewater treatment consisting of a biological unit (anaerobic baffled reactor, anoxic tank and oxic unit, A2O) and an ecological unit (horizontal flow constructed wetland) was developed, and key performance indicators were identified. The bio-ecological treatment system showed high removal efficiency for pollutants, successfully achieving 91%, 85%, 78%, and 92% removal efficiencies for chemical oxygen demand (COD), ammonium (NH 4 -N), total nitrogen (TN), and total phosphorus (TP), respectively. The concentrations of pollutants in the effluent from the system were lower than the Class 1 A regulated values of the Chinese National Standard GB18918-2002. The system offered high removal efficiency, simple operation, and low energy consumption. The A2O-wetland is a good alternative for rural wastewater treatment systems.

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“…They reported that methane content in biogas ranged from 58% to 76%. Rajagopal et al [69] developed a process combining anaerobic digestion and anoxic/oxic treatment to treat swine wastewater and obtained 5. of slurry added. In another study, Labatut et al [70] observed that co-digestion of dairy manure with easily-degradable substrates increases the specific methane yields when compared to manure-only.…”

Section: Energy Production Estimationmentioning

confidence: 99%

Sustainable Agro-Food Industrial Wastewater Treatment Using High Rate Anaerobic Process

Rajagopal

Saady

Torrijos

et al. 2013

Water

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This review article compiles the various advances made since 2008 in sustainable high-rate anaerobic technologies with emphasis on their performance enhancement when treating agro-food industrial wastewater. The review explores the generation and characteristics of different agro-food industrial wastewaters; the need for and the performance of high rate anaerobic reactors, such as an upflow anaerobic fixed bed reactor, an upflow anaerobic sludge blanket (UASB) reactor, hybrid systems etc.; operational challenges, mass transfer considerations, energy production estimation, toxicity, modeling, technology assessment and recommendations for successful operation.

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Combined anaerobic and activated sludge anoxic/oxic treatment for piggery wastewater

Cited by 58 publications

References 12 publications

The treatment of animal manure wastewater by coupled simultaneous methanogenesis and denitrification (SMD) and shortcut nitrification–denitrification (SND)

The treatment of animal manure wastewater by coupled simultaneous methanogenesis and denitrification (SMD) and shortcut nitrification–denitrification (SND)

A Modified Bio-Ecological Process for Rural Wastewater Treatment

Sustainable Agro-Food Industrial Wastewater Treatment Using High Rate Anaerobic Process

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