汾河水系主要污染源分析

汾河作为山西省主要用水水源的同时，接纳了全省近一半的废污水和污染物质。在众多的入河污染源中，少数入河排污口排入汾河水系的污染物质占整个水系的大部分份额，其中又以化工和造纸两个行业所造成的危害最大。因此，在汾河的水污染治理中，污染排放的控制应针对主要入河排污口，即针对少数大型入河排污企业；废污水的治理应针对主要排污行业，即针对化工和造纸两大行业。

Analysis on Main Pollution Sources of the Fenhe River

It is investigated that there are 420 sewage inlets along the Fenhe River,from which 426,550,000 t waste water,10,523 t ammonia and nitrogen,87,177 t COD and 356.6 t volatile phenol are drained into the river per year.Among the 420 sewage inlets,main 20 inlets drain 82.0% of annual total amount of pollutants. From the point of view of industry,the pollutant from the chemical and paper industries holds 92.3% of that from main 20 inlets,75.6% of that of the whole river.In the pollutant from the chemical industry,that from the fertilizer and coking industries is in the majority.This will provide important leads for water pollution controlling.