“A2O+生态处理”耦合工艺对城市黑臭水体的综合治理应用研究

Study on Application of “A2O+ Ecological Treatment” Coupled Process in Comprehensive Control of Urban Black Odorous Water Bodies

摘要:

针对东莞市板湖河黑臭水体污染情况，采用“格栅+气浮+耦合工艺（A²O+生态处理+生物膜）+深度过滤+消毒”组合工艺构建物理—生化—生态系统进行综合整治。运行结果表明，经过系统深度处理，能够有效处理氮、磷、有机物等营养物质，化学需氧量、5 d生化需氧量、氨氮、总氮、总磷等指标均能达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）中的一级A标准，相应出水年平均值分别为16.65、4.11、0.31、8.79、0.14 mg/L，平均去除率分别达到了89.6%、91.3%、98.7%、70.6%、94.1%。

Abstract:

Aiming at the pollution situation of the black and odorous water body in Banhu River of Dongguan City, the composite process of “grille + air flotation + coupled process (A²O + ecological treatment + biofilm) + deep filtration + disinfection” is used to build a physical的biochemical的ecological system for the comprehensive control. The operational results indicate that after the systematically advanced treatment, the nutrients such as nitrogen, phosphorus and organic matter can be effectively treated. The indicators including chemical oxygen demand, 5-day biochemical oxygen demand, ammonia nitrogen, total nitrogen and total phosphorus can all meet the Class A standard of Pollutant Discharge Standard for Municipal Wastewater Treatment Plant(GB 18918—2002). The corresponding annual mean values of effluent are 16.65, 4.11, 0.31, 8.79, 0.14 mg/L, respectively. And the average removal rates are 89.6%, 91.3%, 98.7%, 70.6% and 94.1%, respectively.