回流对间歇式A/O-MBR脱氮除磷影响的中试研究  被引量:6

Impact of reflux on nitrogen and phosphorus removal performance of a pilot scale of intermittent A/O-MBR

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作  者:丁安[1] 梁恒[1] 郭五珍 叶挺进 陈杰[3] 饶欠平 李圭白[1] 

机构地区:[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090 [2]佛山市水业集团有限公司,广东佛山528305 [3]苏州立升膜分离科技有限公司,江苏苏州215152

出  处:《哈尔滨工业大学学报》2013年第4期33-37,共5页Journal of Harbin Institute of Technology

基  金:国家自然科学基金重点项目(51038003);佛山市科技专项项目(2011AA10331);禅城区产学研项目(2011B1031)

摘  要:为进一步提高佛山某污水厂(CASS工艺)出水水质使其达到中水回用标准,以该厂污水为对象进行中试规模研究,探讨回流比和回流方式对间歇式缺氧/好氧膜生物反应器(A/O-MBR)脱氮除磷的影响.结果表明:回流方式和回流比对间歇式A/O-MBR去除CODCr和NH4+-N效果无显著性影响,出水CODCr和NH4+-N均达到《城镇污水处理厂污染物排放标准》(GB18918—2002)一级A标准;回流比和回流方式对系统去除TN和TP的效果均有显著影响,连续回流且回流比较大(350%)时,系统对TN和TP的去除效果均较差;回流比为130%时,连续回流有利于系统对TN的去除,去除率可达(48.00±10.05)%,出水TN可达一级A标准;回流比为130%时,间歇回流更有利于系统对TP的去除,去除率可达(78.27±23.41)%,出水TP满足一级B标准.To enhance the quality of wastewater treatment plant' s (CASS process) effluent in Foshan to satisfy the water reuse standards, the impact of reflux ratios and reflux modes on nitrogen and phosphorus removal performance of a pilot scale of intermittent A/O-MBR fed with municipal wastewater was studied in this paper. The results showed that the reflux ratios and reflux modes had no remarkable influence on removal of CODcr and NH4+ -N, and the concentrations of CODcr and NH4+ -N in the effluent both reached the primary standard A of 〈 Discharge standard of pollutants for municipal wastewater treatment plant 〉 ( GB18918-- 2002). The reflux ratios and reflux modes had significant influence on removal of TN and TP. The removal efficiencies of TN and TP were poor with a continuous reflux and a larger reflux ratio ( 350 % ) ; When the reflux ratio was 130 %, the continuous mode was propitious to TN removal, and the removal efficiency could reach ( 48.00 + 10. 05 ) %, what' s more, the concentration of TN in the effluent reached the primary standard A, while the intermittent mode was also propitious to TP removal, the removal efficiency could reach (78.27 +23.41 ) %, and the concentration of TP in the effluent reached the primary standard B.

关 键 词:缺氧 好氧膜生物反应器 回流比 回流方式 脱氮除磷 

分 类 号:TU992.3[建筑科学—市政工程]

 

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