悬浮复合填料对改良多级A/O工艺处理低碳氮比生活污水同步脱氮除磷的影响  

Influence of suspended composite fillers on simultaneous denitrification and dephosphorization of domestic wastewater with low carbon nitrogen ratio treated by modified multi-stage A/O process

作　　者：张国珍[1] 明驹 武福平[1] 马宏琛 吴勇[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]武汉地铁集团有限公司,湖北武汉430000

出　　处：《环境污染与防治》2017年第10期1108-1110,1116,共4页Environmental Pollution & Control

基　　金：甘肃省重点研发计划项目(No.17YF1NA056);国家自然科学基金资助项目(No.51068014;No.51468033);长江学者和创新团队发展计划项目(No.IRT0966)

摘　　要：针对改良多级A/O工艺处理低碳氮比生活污水难以同时兼顾脱氮除磷的问题,考察了内置式悬浮球中填加海绵块(填料A)和内置式悬浮球中填加海绵块、海绵铁和聚氯乙烯泡沫(填料B)两种悬浮复合填料的效果。结果表明,悬浮复合填料的添加可以在保证COD去除效果的基础上同时兼顾脱氮除磷。出水COD和氨氮可以达到《城镇污水处理厂污染物排放标准》(GB18918—2002)的一级A标准。填料B的脱氮除磷效果均优于填料A。可以通过添加外加碳源增强脱氮的主要限制步骤(反硝化作用),从而进一步提高脱氮效果,有望出水TN达到GB 18918—2002的一级A标准。Domestic wastewater with low carbon nitrogen ratio was hard to be denitrified and dephosphorized simultaneously by modified multi-stage A/O process. Suspended composite fillers of Filler A （built-in suspended ball and sponge） and Filler B （built-in suspended ball, sponge, sponge iron and polyvinyl chloride foam） were tested to solve this problem. Results showed that suspended composite fillers was promising for simultaneous denitrification and dephosphorization without sacrifice of COD removal. COD and ammonia nitrogen in effluent could meet Grade 1A of ＂Discharge standard of pollutants for municipal wastewater treatment plant＂ （GB 18918-2002）. Filler B was much better than Filler A. TN removal rate could be enhanced to meet Grade 1A of GB 18918-2002 by adding additional car- bon resource.

关 键 词：悬浮复合填料 改良多级A/O工艺 低碳氮比 生活污水 同步脱氮除磷 

分 类 号：X703[环境科学与工程—环境工程]