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浸没式厌氧膜生物反应器处理低浓度污水产甲烷特性 预览

Methanogenic Characteristics of Low Concentration Domestic Sewage Treatment Based on SAn MBR
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摘要 研究浸没式厌氧膜生物反应器(submerged anaerobic membrane bioreactor,SAn MBR)处理低浓度生活污水的产甲烷特性,考察运行期间甲烷产率变化以及有机负荷(OLR)与甲烷产生量的关系。结果表明,SAn MBR在中温[(35±1)℃]、p H为6.8~7.2,HRT为6~15 h条件下,甲烷产率最大为0.067 L·g^-1COD。在进水OLR为0.29~2.85 kg COD/m^3·d^-1条件下,甲烷日产生量和累积甲烷产生量与OLR呈线性相关,拟合方程分别为甲烷日产生量=0.3OLR+0.23(R^2=0.89)和累积甲烷产生量=29.8OLR-5.45(R^2=0.81)。对反应器甲烷产生量通过支持向量机进行模拟预测表明,反应器甲烷产生量可长期保持稳定,反应器耐冲击负荷能力较强。 The submerged anaerobic membrane bioreactors(submerged anaerobic membrane bioreactor,SAnMBR)was used to treat low-concentration domestic sewage for investigating the methanogenic properties.The change of methane production rate during operation as well as the relationship between organic load(OLR)and methane production was researched.The results show that the maximum of methane production rate is 0.067 L·g^-1 COD with medium temperature[(35±1)℃],p H 6.8~7.2 and hydraulic retention time of 6~15 h.The daily methane production and cumulative methane production were linearly correlated with OLR under the condition of influent OLR of 0.29~2.85 kg COD/m^3·d^-1.The fitting equations are methane daily production=0.3 OLR+0.23(R^2=0.89)and cumulative methane production=29.8 OLR-5.45(R^2=0.81).The methane production in the reactor was simulated and predicted by the support vector machine.It is concluded that the methane production can remain stable for a long time and the reactor has strong impact load resistance.
作者 刘建伟 陈雪威 栾昕荣 田洪钰 高柳堂 徐嵩 LIU Jian-wei;CHEN Xue-wei;LUAN Xin-rong;TIAN Hong-yu;GAO Liu-tang;XU Song(Beijing Research Center of Sustainable Urban Drainage System and Risk Control;College of Environmental and Energy Engineering,BeijngUniversity of Civil Engineering,Beijing100044,China;China Railway 16 Bureau Group Metro Engineering Co.,Ltd.,Beijing100124,China)
出处 《科学技术与工程》 北大核心 2019年第9期281-286,共6页 Science Technology and Engineering
基金 “十三五”水体污染控制与治理科技重大专项课题(2017ZX07102004-005)资助.
关键词 浸没式厌氧膜生物反应器 支持向量机 低浓度生活污水 甲烷 SAnMBR support vector machine low strength domestic sewage methane
作者简介 第一作者:刘建伟(1979-),男,博士,副教授。E-mail:liujianwei@bucea.edu.cn。
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