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Efficiency of Hybrid Anaerobic Baffled Reactor for Treatment of Low Concentration Sewage

Bi Xi Dong

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Abstract

Pilot-scale study on treatment of domestic sewage for 12 months was performed in hybrid anaerobic baffled reactor(HABR).The results indicate that when the HRT and temperature are 6 h and(25±2)℃,the removal rates of COD,TP and TN are 78.58%,35.15%,39.17% respectively.The optimal volume percentage in the anaerobic sludge zone is 45% to 65%.The optimal influent COD concentration is 150 to 800 mg/L.When the HRT and temperature are 6 h and 7 ℃,the removal rates of COD,TP and TN are 64.37%,20.72% and 23.65% respectively,and the maximal specific methane production rate is 1.85 mL/(gVSS·h).It is concluded that HABR is suitable for low concentration sewage treatment at low temperature in North China.The reasons of high efficiency of HABR for treatment of low concentration sewage are owed to its high efficient mass transfer and abundant biofacies.

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What this paper is about

Pilot-scale study on treatment of domestic sewage for 12 months was performed in hybrid anaerobic baffled reactor(HABR).The results indicate that when the HRT and temperature are 6 h and(25±2)℃,the removal rates of COD,TP and TN are 78.58%,35.15%,39.17% respectively.The optimal volume percentage in the anaerobic sludge zone is 45% to 65%.The optimal influent COD concentration is 150 to 800 mg/L.When the HRT and temperature are 6 h and 7 ℃,the removal rates of COD,TP and TN are 64.37%,20.72% and 23.65% respectively,and the maximal specific methane production rate is 1.85 mL/(gVSS·h).It is concluded that HABR is suitable for low concentration sewage treatment at low temperature in North China.The reasons of high efficiency of HABR for treatment of low concentration sewage are owed to its high efficient mass transfer and abundant biofacies.

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Available abstract

Pilot-scale study on treatment of domestic sewage for 12 months was performed in hybrid anaerobic baffled reactor(HABR).The results indicate that when the HRT and temperature are 6 h and(25±2)℃,the removal rates of COD,TP and TN are 78.58%,35.15%,39.17% respectively.The optimal volume percentage in the anaerobic sludge zone is 45% to 65%.The optimal influent COD concentration is 150 to 800 mg/L.When the HRT and temperature are 6 h and 7 ℃,the removal rates of COD,TP and TN are 64.37%,20.72% and 23.65% respectively,and the maximal specific methane production rate is 1.85 mL/(gVSS·h).It is concluded that HABR is suitable for low concentration sewage treatment at low temperature in North China.The reasons of high efficiency of HABR for treatment of low concentration sewage are owed to its high efficient mass transfer and abundant biofacies.

Key concepts: Anaerobic exercise, Sewage, Chemistry, Methane, Sewage treatment, Sewage sludge, Volume (thermodynamics), Pulp and paper industry

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