摘要
目的 卫生评价水厂制水工艺净化效果。方法 按《生活饮用水标准检验方法》(GB5 75 0 - 1985 )进行水质检验 ,依据《生活饮用水卫生标准》(GB5 74 9- 1985 )对各水厂出厂水进行单项和综合合格率评价 ,比较枯水期和丰水期水源水与出厂水之间主要指标的均值求出水质的净化率。结果 各水厂制水工艺大体相同 ,水源水、出厂水监测无变化的指标有 15项 ,占监测指标的 4 4.12 % ,有变化的指标有 19项 ,占 5 5.88%。枯、丰水期水质净化效果较好地有浑浊度、铁和微生物指标 ,丰水期锰的净化效果也较好。枯、丰水期总硬度、氯化物、氟化物、氯仿、四氯化碳等指标均有增加 ,增加幅度最大是氯仿 ,丰水期达 79%。经过制水工艺 ,水质放射学指标均有衰减 ,不同水系(汉江、长江 )出厂水监测结果、枯水期与丰水期出厂水监测结果差别均无显著性。结论 在无水源污染的条件下 ,水厂制水工艺净化效果符合《生活饮用水卫生标准》(GB5 74 9- 1985 )。
Objective To evaluate the effect of the purified water in the waterworks technology Methods According to “Sanitary Standard of Examination Methods for Drinking Water (GB5750-1985)”,raw water and finished water from the waterworks were analyzed. On the basis of “Sanitary Standard for Drinking Water (GB5749-1985)”, the single and composite indices of sanitary water were evaluated, and the purification index was acquired by comparing the main values of the raw water and finished water in dry and rainy seasons.Results The technologies are similar in the waterworks. Compared the raw water with the finished water quality,the results showed that 15 items were no changes, occupying 44.12% of items examined and the other19 items which occupying 55.88% of items examined had great changes. The improved items were turbidity, iron and microbiological indices in the dry and rainy seasons and index of manganese in the rainy seasons Total hardness, Chlorides and fluorides, chloroform and carbon tetrachloride were increased in the dry and rainy seasons, in which chloroform increased most, up to 79% in the rainy seasons. The radiance indices were reduced. The differences are no significant in monitoring the finished water from different raw water in the dry and the rainy seasons. Conclusion The effect of purified water corresponds with Sanitary Standard for Drinking Water (GB5749-1985) given water source isn't polluted.
出处
《中国卫生工程学》
CAS
2005年第1期6-9,共4页
Chinese Journal of Public Health Engineering
