复合生态浮床净化某小河道重金属污染工程设计

Composite Ecological Floating Bed Purification Engineering Design for Heavy Meatal Pollution of A Small River

近年来,由于上游工矿企业的排污,我国南方某小河道中V,Cr,Cd,Pb等多种重金属超标,对下游作为饮用水水源地的水库水质构成严重威胁。针对上述问题,该研究在传统生态浮床基础上设计了一套适合该河道污染特征、布置合理的生态浮床系统来净化水质。生态浮床为能同时负载挺水植物、浮水植物和沉水植物的立体式复合生态浮床。经过计算和现场工程验证,在5 km河道布置200组生态浮床单元,可以使该河水质经过处理后达到地表水Ⅱ类标准,保障饮用水源地水质安全。

In recent years,due to the discharge of upstream industry and mining enterprises,many heavy metals such as V,Cr,Cd and Pb in a small river in the south of China have exceeded the standard,which posed a serious threat to the water quality of the reservoir which was a source of drinking water in the downstream.Aimed at the problem,the study designed a stereoscopic compound ecological floating bed system based on the traditional ecological floating beds,which was suitable for the small river pollution characteristics and had a reasonable arrangement to purify the water.The ecological floating bed was a stereoscopic compound ecological floating bed which can simultaneously load emerged plants,floating plants and submerged plants.After calculation and engineering verification at the scene,200 sets of ecological floating bed units are arranged in 5 km river channel,which can be used to reach the standard II of the surface water quality after purification and ensure the safety of drinking water.