净水技术2024，Vol.43Issue(4)：85-94,168,11.DOI:10.15890/j.cnki.jsjs.2024.04.011
双模式MSBR工艺在城镇污水厂雨季工况中的中试试验
Pilot Test of Dual-Mode MSBR for Wet Weather Flow Treatment in Urban WWTP
沈磊1
作者信息
- 1. 可事托环保设备<上海>有限公司,上海 200030
- 折叠
摘要
Abstract
Domestic urban WWTPs experience hydraulic shock loads which increase drastically during wet weather.The WWTPs are insufficient in handling the peak wet weather combined flow as the treatment capacity of secondary treatment processes is based on dry weather flowrate,which causes overflow ahead of WWTPs or internal bypass inside the WWTPs.The overflow and bypass lead to severe pollution of receiving water.This pilot test was conducted in a WWTP in Zhejiang to determine the peak wet weather biological treatment capacity achievable of dual-mode MSBR with step feed capability.The results demonstrated that a peak wet weather secondary treatment capacity from 2～4 times dry weather flow rate could be maintained,meanwhile the effluent limits such as CODCr,ammonia nitrogen,total nitrogen(TN)could be maintained at or lower than first class A criteria specified of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002),among which average ammonia-nitrogen was below 1.0 mg/L,average TN was below 10 mg/L.The results also demonstrated that dual-mode MSBR is remarkably better than any physical-chemical enhanced primary treatment processes in removal efficiency.A new solution is provided to achieve a significant increase in peak wet weather treatment capacity of WWTPs,a remarkable decrease in receiving water's pollution,and the end of malodorous and black water.关键词
城镇污水处理厂/双模式MSBR工艺/多点进水/雨季合流污水处理/合流制溢流污染控制Key words
urban wastewater treatment plant(WWTP)/dual-mode MSBR/step feed/wet weather combined flow treatment/CSO pollution control分类
建筑与水利引用本文复制引用
沈磊..双模式MSBR工艺在城镇污水厂雨季工况中的中试试验[J].净水技术,2024,43(4):85-94,168,11.
