摘要
由于新沂河受到沿岸城市污水和工业废水的污染,使与之相连的连云港饮用水源--蔷薇河被污染,为解决连云港的供水问题,对新沂河实施了清污分流工程,使其南泓为清水专道,北泓为污水专道.工程运行后,北泓内的污染河水对沿岸及入海口的生态环境造成了严重的影响,为此在新沂河中游的滩地上构建了地表漫流系统（OF）,并开展了处理污染河水的中试研究.结果表明,当CODMn＜30 mg/L时,系统对CODMn的平均去除率为20%～35%,当CODMn≥30 mg/L时,系统对其平均去除率为45%～55%;系统对氨氮的平均去除率为70%～85%.植物的主要作用是均匀布水和延长污水的停留时间,其对CODMn和氨氮的吸收作用有限;坡面平整度是影响出水水质的重要因素.
Xinyi River was polluted by municipal and industrial sewages of both river banks. It resuited in pollution of the Qiangwei River, which is the drinking water source of Lianyungang. For the Lianyungang＇s drinking water supply, a pollution-free water/sewage distribution project was built. The southern part of the Xinyi River was for pollution-free water, the northern part was for sewage. However, the water pollution of the north affected the environment of the river banks and the sea outfall. An overland flow system was used for the treatment of polluted water from Xinyi River. Results from pilot-scale experiments show that when CODMn 〈 30 mg/L and CODM, ≥30 mg/L, the average removal rates of CODMn are 20% - 35% and 45% - 55%, respectively. The removal rate of NH3 - N is 70% - 85%. The plants in the overland flow system play the main role of distributing water flow homogeneously and extending hydraulic retention time while the uptake of pollutants by plants is limited. The slope smoothness of the experimental field has significant effects on the water quality of the effluent.
出处
《中国给水排水》
CAS
CSCD
北大核心
2006年第9期46-49,共4页
China Water & Wastewater
基金
江苏省环境保护厅科技计划项目(2002010)
关键词
地表漫流系统
污染河水
COD
氨氮
植物
overland flow system
polluted river water
COD
ammonia nitrogen
plant
作者简介
孙敏,电话：（025）51773709E-mail：sunm37@sohu.com
