%0 Journal Article
%T Study on the Operation of a Methanogenic EGSB Reactor under Acid Condition at pH 6.0<br>pH6.0酸性条件下产甲烷EGSB反应器的运行研究
%A LING Xue-feng
%A ZUO Jian-e
%A GU Xia-sheng
%A <br>凌雪峰
%A 左剑恶
%A 顾夏声
%J 环境科学
%D 2004
%I 
%X In this paper the methanogenic process under acid condition at pH 6.0 was studied. Inoculated with neutral granular sludge, a 3.1 L EGSB reactor was operated for 345 days, the pH value in the reactor was gradually lowered down, and the acid-tolerant methanogenic granular sludge was achieved, and the anaerobic EGSB reactor was operated stably under lower pH and lower alkalinity. At pH 6.0, influent COD 3000 mg/L, COD OLR 5 kg/(m3 x d), the average COD removal efficiency of the EGSB reactor was 95.0%, while the effluent alkalinity (CaCO3) was only 328.5 mg/L, the biogas production per gram removal COD was 372.2 mL with 57.6% methane content. At pH 6.0, influent COD 4000 mg/L, COD OLR 7.5 kg/(m3 x d), the average COD removal efficiency was 90.9%, and the effluent alkalinity (CaCO3) was 404.8 mg/L, the biogas production per gram removal COD was 446.3 mL with 55.9% methane content. The EGSB reactor was operated at pH 6.0-6.1 for 112 days, which showed the stable methanogenic process was feasible at low pH and low alkalinity.
%K acidic condition
%K low pH
%K methanogenic process
%K EGSB reactor
%K granular sludge<br>酸性条件
%K 低pH值
%K 产甲烷过程
%K EGSB反应器
%K 颗粒污泥
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=23A97E600F763A5B&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=11B4E5CC8CDD3201&eid=1D0FA33DA02ABACD&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=12