海南省南渡江地面水源水质卫生学调查

Hygienic inspection of ground water quality of Nandujiang River in Hainan

目的 了解南渡江地面水源水质卫生状况及受污染状况。 方法 采用环境流行病学抽样调查的方法 ,对南渡江枯丰水期上、中、下游 8个断面 2 4个采样点的 2 9项指标 696个水质检测数据进行统计分析。 结果 (1)南渡江中、下游有污染物排放 ,尤以中游排放量最大 ;(2 )该水源水质感官、细菌学指标超标严重 ,化学指标中铁、挥发酚、硫酸盐超标 ,超标率分别为 5 4 2 %、8 3 %、16 7% ,最大超标倍数分别为 3倍、2倍和 1 16倍 ,毒理学指标氟化物在中游定安段有轻度超标 ,最大超标倍数为 1 14倍。 结论 南渡江中游遭受污染较重 ,应加强南渡江中、下游的综合治理 ,如作为生活饮用水水源水 ,应设法排除污染 ,执行《生活饮用水卫生规范》

Objective To investigate the hygienical status and pollution status of water quality of ground water head of Nandujiang River Method A method of environmental epidemiologically sampling investigation was taken in the on-site investigation for the pollution status of all reaches of Nandujiang River,in addition,696 examination data for water quality of 29 indexes for 24 sampiling sites on 8 sections of the upper,middle and lower reaches of Nandujiang River was analyzed statisticaly during low water and high water periods Results (1)Pollutants were found in the middle and lower reaches of Nandujiang River,with the maximum of pollutants in the middle reach; (2) The sense organ and bacteriology indexes were overproofed significantly In general chemical indexes,iron,volatile phenol and sulfate were overproofed,with overproof rates of 54 2%,8 3% and 16 7% respectively,and maximum overproof times of 3,2 and 1 16 respectively,among which,in the toxicology index,chlorides in Ding an section of the middle reach was lightly overproofed,with the maximum overproof times of 1 14 Conclusion The middle reach of Nandujiang River was seriously polluted,overall management to the middle and lower reaches of Nandujiang River should be strengthen,moreover,if used as water head of daily drinking water,pollutions should be eliminated,and 《The Hygienic Standard For Daily Drinking Water》for citizen's daily drinking water should be carried out