聚氨酯填料对表面流人工湿地污水处理效果的研究

三种表面流人工湿地系统对污水的处理效果表明,S1和S2对各污染物的去除效率均达75%以上。添加聚氨酯填料后,人工湿地对污染物的去除有明显促进作用,尤其是氨氮和总氮经25 h处理后去除率分别达到86.3%和87.5%。同时,水力停留时间为15 h时,S2的氨氮和总氮去除率分别比S1提高14.1%和17.4%。本研究表明,聚氨酯填料的添加可显著缩短人工湿地的水力停留时间,可以应用于表面流人工湿地的污水处理工程中。

The research for Treatment Efficiency of Sewage for Polyurethane Filler on the Surface Constructed Wetlands

The efficiency of three surface constructed wetland system show that S1 and $2 of various pollutants by more than 75 %.Adding polyurethane filler, wetland for removal of pollutants significantly promote, the ammonia nitrogen and total nitrogen treated with 25 h removal rate reached 86.3 % and 87.5 % respectively. Meanwhile, hydraulic retention time is 15 h, S2,ammonia nitrogen and total nitrogen removal rates were 14.1% and 17.4 % higher than that of S 1 .The study shows that, polyurethane filler can significantly shorten the residence time of wetland sewage treatment works, can be applied to the surface constructed wetlands.