On-stream detention pond system (OSDPS) is a promising technology for polluted river purification and restoration, whose main purification mechanism was particle settlement.
河道滞留塘系统是以颗粒物沉降为污染物主要净化机理的污染河流净化技术。
The biological purification tank combined of artificial wetland technique and the bio-contact oxidation method was applied for malodorous river water in central urban region of Shanghai City.
将人工湿地技术与生物接触氧化法相组合的生物净化槽应用于上海市中心城区黑臭河水净化。
To know the characteristic of the combination of contact oxidation, Study the purification effect of combination of contact oxidation technology treating the polluted river.
为了解组合式接触氧化工艺的特性，考察了组合式接触氧化对污染河水的净化效果。
The official also reminded the general public, less than normal due to the current flow of the Xiangjiang River, Xiangjiang reduced self-purification of water, so water will have some impact.
该负责人同时提醒广大市民，由于目前湘江流量偏少，湘江水的自净作用减弱，因而水质会有一定影响。
But now the river has been polluted by the factories nearby. They pour dirty and poisonous water into the river without any purification.
但是现在这条江已经被附近的工厂污染了，工厂向江里倾倒未经净化的又脏又毒的水。
River filtration systems purify surface water flowing through this system to some extent, but degree of purification is not known.
河流渗滤系统对入渗的地表水有一定的净化作用，过去人们很少从理论上研究河流渗滤系统对污染河水的净化作用。
This dynamic pilot study on purification of Linjiang river, branch of Yangtze river, by canna indica with four-stage floating bed technology was performed.
本试验以长江次级河流临江河为研究对象，利用美人蕉四级串联浮床系统净化重污染次级河流的动态试验。
To improve the self-purification ability and pollution situation of river water, control the pollution load and ensure the river basic flow are two important ways.
在控制污染负荷排放的同时，也要保证河流基本流量，提高水体自净能力，改善渭河水体的污染现状。
It is concluded that controlling the external pollution resource is the key factor to guarantee self-purification ability of river.
说明控制外源污染是河流保证自我修复能力的关键。
The purification effect of biological aerated filter stuffed with zeolite, haydite and volcanic rock for river water was studied.
以沸石、陶粒和火山岩曝气生物滤池为研究对象，研究了其对实际河水的净化效果。
The results show that the system using new combined fillers has better purification effect on polluted river water and higher hydraulic loading than the system using only river sand as fillers.
结果表明，新型混合填料渗滤系统对受污染河水的净化效果较好，系统的水力负荷也较单独以河砂为填料的渗滤池有大幅提高。
The results show that the system using new combined fillers has better purification effect on polluted river water and higher hydraulic loading than the system using only river sand as fillers.
结果表明，新型混合填料渗滤系统对受污染河水的净化效果较好，系统的水力负荷也较单独以河砂为填料的渗滤池有大幅提高。
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