黄河流域入河排污口情况调查

Investigation of Sewage Discharge into the Yellow River

根据黄河流域入河排污口调查资料，对入河排污口的分布、废水排放方式、排污口入河废水量。污染物量、河流纳污量、流域水质污染情况进行了分析。流域内共调查入河排污口1708个，其中连续常年排放的有1481个，间断排放的有227个；排污方式以明渠漫流排放为主，占排污口总数的69．7％；从排放的污水性质看，以工业废水为主。全流域废污水年入河量约为41．7亿m3，并且主要集中在一些大中型排污口；全流域调查的入河排污口主要污染物年入河量约117．1万t，其中COD为97．3万t，氨氮为12．4万t，挥发酚为0．133万t。最后还针对调查情况提出了改进建议。

The Distribution of outlets, discharging patterns, volumes into the Yellow River of sewage discharge, amount of polluted body, bearing capacity of the river to pollution, and pollution backguund of water in the Yellow River basin are analyZed in the paper on the basis of investigation of sewage dischng outlets in the Yellow River. There are totally 1 708 outlets investigated of discharging sewage in the river, in which 1 481 are continuously discharging and 227 discharging with intervals; the way of waste flow discharge is mainly gi'avitation in open channels that account for 69. 7% of the total; the major type of sewage comes from industry discharge. The total sewage into the Yellow River is around 4. 17 billion m3 a year with concentration in some big and middle outlets; the investigated amount of major pollution materials into the river is about 1. 1171million t in the basin, in which COD is 973 thousand t, ammonia nitrogen is 124 thousand t, volatile phenol is 1. 33 thousand t. Finally, suggestions for improvement are put forwaed.