高效絮凝和浮选净水设备在处理清淤底泥余水中的应用

Application of High Efficiency Flocculation and Flotation Water Purification Equipment in Treatment of Residual Water from Desilting Sediment

清淤底泥处理会产生大量余水,余水需经妥善处理,防止对环境产生二次污染。余水处理具有处理水量大,污染因子单一,微污染水,为临时工程等特点。采用沉淀池-高效絮凝和浮选净水设备-清水池工艺处理清淤底泥余水,在沉淀池平均水质指标SS:148mg/L的情况下,出水水质为SS:13mg/L,SS去除率达到90%以上,可达《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级B标准。

The treatment of dredging sediment will produce a large amount of residual water,which needs to be properly treated to prevent secondary pollution to the environment.The residual water treatment is characterized by large amount of treated water,single pollution factor,slightly polluted water and temporary works.The sedimentation tank-high efficiency flocculation and flotation water purification equipment-clean water tank process is used to treat the residual water from the desilting sediment,when the average water quality index of sedimentation tank SS is 148mg/L,the effluent quality is SS:13mg/L,SS removal rate reaches more than 90%,it can meet the Class I B standard of the Discharge Standard of Pollutants for Urban Sewage Treatment Plants(GB 18918-2002).