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.
出处
《环境污染与防治》
CAS
CSCD
北大核心
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)
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
suspended composite filler
modified multi-stage A/O process
low carbon nitrogen ratio
domestic wastewater
simultaneous denitrification and dephosphorization
