河岸荆三棱带改善河水水质的中试研究

在1 a的时间里利用中试规模的荆三棱河岸带对受污染河水进行处理,主要考察了COD、NH⁺₄-N、TP、浊度和水温等水质指标.结果表明,荆三棱带在夏、秋季改善河水水质的效果好于冬、春季.荆三棱带在夏季对COD、NH⁺₄-N、TP和浊度的去除率分别为44.10%、78.66%、69.44%、99.53％,在冬季对河水水质也有一定程度的改善.荆三棱带可以降低河水温度及河水早晚温差,起到改善局部水环境的作用.荆三棱带与空白带的对比表明植物对去除水中污染物、改善局部水环境起着重要作用.

Pilot-Scale Study on Riparian Scirpus yagara Ohw Zone Improving Water Quality of River

In one year polluted water was treated with Scirpus yagara Ohw to investigate its impact on river water quality in pilot scale test,and COD,NH~ _4-N,TP,turbidity and water temperature were tested.The results show that the Scirpus yagara Ohw gives better water quality in summer and autumn than in winter and spring.In summer,the Scirpus yagara Ohw zone removes 44.10% of the COD,78.66% of the ammonia,69.44% of the phosphorous,and 99.53% of the turbidity.It also can improve water quality to some extent in winter.The Scirpus yagara Ohw can reduce effluent temperature and effluent temperature difference between evening and morning and then improve water microenvironment locally.Comparisons between the Scirpus yagara Ohw riparian zone and control zone showed that the Scirpus yagara Ohw affects importantly on removing pollutants,improving local microenvironment of water.