人工浮床处理重污染河水的效能分析

试验采用填料人工浮床的方式种植菖蒲、风车草、香根草3种植物,分3池进行试验,采用重力自流方式分别进水,对浮床出水进行水质监测.监测结果表明菖蒲与风车草混种及菖蒲浮床系统对试验河水中有机物和N、P的去除较好.试验数据表明植物直接吸收不是氮、磷去除的主要途径;试验进水为劣V类重污染河水时,菖蒲、混种菖蒲与风车草、香根草浮床的COD、TP、TN平均去除率分别可达20.46%、23.3%、18.9%,38.35%、45.46%、44.8%与42.34%、45.82%、38.6%;控制试验进水污染负荷,采用菖蒲、混种菖蒲与风车草、香根草的人工浮床生态工程技术治理重污染河水是可行的.

Processing effects of heavy pollution river water treated using artificial floating beds

Acorus calamus L,Yperus slternifolius,and Vetoveria zizanioides were planted in test floating beds.Three beds where the water flowed automatically due to the gravity were used in the research.The quality of the leakage water was checked.The results indicated the COD,TN and TP could be removed from the floating bed system of Acorus calamus L and the mixed floating bed system of Acorus calamus L and Yperus slternifolius,respectively.The data indicate that the direct absorption of nitrogen and phosphorus by the plants was not the major removal approach.When the inflow water quality was worse than V kinds of heavy polluted river water,the average elimination rate of COD,TP,TN in the floating bed of Acorus calamus L,Yperus slternifolius and Vetoveria zizanioides could reach 20.46%,23.3%,18.9%;38.35%,45.46%,44.8%,and 42.34%,45.82%,38.6%,respectively.