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洞庭湖天然水产资源逐渐衰退,八十年代后期,徘徊于1.4—1.8万吨。为了保护渔业环境,发展渔业生产,1988年4~5月,我们对洞庭湖区的渔业环境进行了较全面的调查与考察,现将调查情况报告如下一、洞庭湖区污水废水排放情况 (一) 工业污染的现状: 据1986年材料统计:全区有工业污染源1789个,重点污染源76个,年总排放废水量55912万吨,废水处理率为23.24%。与1981年比较,工业污染源增加18.8%,重点工业污染源增加31%,废水年总排放
Dongting Lake natural aquatic resources gradually decline, the late eighties, hovering at 1.4-1.8 million tons. In order to protect the fishery environment and develop fishery production, we conducted a more comprehensive investigation and study of the fishery environment in Dongting Lake from April to May 1988, and the investigation report is as follows: 1. Discharge of Sewage and Wastewater in Dongting Lake Region (I) Industry Pollution status: According to the material statistics of 1986, there are 1,789 industrial pollution sources and 76 key pollution sources in the region, with a total annual discharge of 559,120,000 tons of waste water and a wastewater treatment rate of 23.24%. Compared with 1981, the industrial pollution sources increased by 18.8%, the key industrial pollution sources increased by 31% and the total annual wastewater discharge