基于黑臭水体治理方案研究及效果分析

Study on the Treatment Scheme of Black Smelly Water and Its Effect Analysis

以天津市大沽排水河黑臭水体为研究对象,采取分级处理措施:一级采用孔板式细格栅、沉砂池和沉淀池进行初步栅渣、沉砂和污泥处理,二级运用生物膜-膜生物反应器(复合MBR)处理。结果表明,COD和NH3-N、TP的质量浓度由最初的57.13 mg/L和8.82、2.18 mg/L分别下降到36.61 mg/L和3.55、0.48 mg/L,去除率分别达到35.92%和59.75%、77.98%。NH3-N、TP含量满足初期设计出口水质指标,COD达到GB 3838-2002的V类水标准。该装置体积小、整体性强、工作压力小且节能,实现了河道的优化管理。

Taking the black and smelly water bodies of the Dagu drainage river in Tianjin as the research object,hierarchical treatment measures were taken,the first level used a pork-plate type fine grid,a sunken sand pool and a sedimentation pool for preliminary grate,sand and sludge treatment,and the second level used biofilm-membrane bioreactor(composite MBR)treatment.The results showed that COD and the mass concentrations of NH3-N,TP decreased from the original 57.13 mg/L and 8.82,2.18 mg/L to 36.61 mg/L and 3.55,0.48 mg/L,respectively,the removal rate reached 35.92%,59.75%and 77.98%,respectively.The content of NH3-N and TP met the initial design and export water quality indicators,and COD reached the V water standard of GB 3838-2002.The device has the advantages of small volume,strong integrity,small working pressure and energy saving.