富营养化对饮用水生产的危害及净化方法

Harms caused by eutrophication in drinking water production and countermeasures

介绍了水体富营养化现象水质特征及其对饮用水生产带来的危害主要有水中含藻多、臭气强、有机物浓度高、向水体释放有毒物质、底泥中铁锰析出等 ,造成了饮用水水源水质恶化 ,水处理难度增加 ,同时也加大了制水成本等问题。针对这些问题 ,本文提出了采用化学药剂法、气浮法、生物法、活性炭吸附法等相应的生产对策。并指出采用生物法处理富营养化水源水 ,具有运行费用低、不增加水中化学物质、可同时去除藻类、有机物、色度、NH+4 N等 ,宜研究推广。

This paper introduces the quality characteristics of eutrophication water and the major harms caused by eutrophication in drinking water production: high algae content, strong effluvium, high degree of organic matter, release of poisonous materials, the separation of Fe and Mn out of the bottom sludge. It deteriorates quality of drinking water. It makes the water difficult to be treated, and also increases the cost. In allusion to these problems, this paper comes up with countermeasure such as the chemistry-medicament method,the gas-float method, the biology-treating method, and the living-charcoal adsorbing method. It showes the biological method bears lower running expenditure without adding chemical materials to the water. It can remove algae, organic matters, chroma, and NH\++\-4-N at one time and should therefore be researched and popularized.