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水质管理是村镇供水的重要内容之一。村镇供出的水也可看作是一种“产品”,它应以国家《生活饮用水卫生标准》(GB5749—85)作为“产品”质量标准。净水厂的水质管理一般包括:选择和正确投加凝聚剂、加氯消毒管理及水质检验等。一、凝聚剂的选择与投加(一)凝聚剂的种类与选择在一般地表水的净化工艺中,需要投加凝聚剂(混凝剂),其作用在于使原水中的杂质形成矾花,为沉淀、过滤提供良好条件,达到净化水质的效果。常见的凝聚剂有两大类:第一类是铝盐,如硫酸铝、明
Water quality management is one of the important contents of water supply in villages and towns. The water supplied by villages and towns can also be regarded as a kind of “product”, and it should be regarded as the “product” quality standard by the National Hygienic Standard for Drinking Water (GB5749-85). The water quality management of a water purification plant generally includes: selection and correct dosing of coagulants, chlorine disinfection management, and water quality inspection. I. Selection and Dosing of Coagulating Agents (I) Types and Selection of Coagulating Agents In the general surface water purification process, coagulant (coagulant) needs to be added, and its function is to make the impurities in the raw water to form floret. Provides good conditions for sedimentation and filtration to achieve the effect of purifying water quality. There are two major types of common coagulants: the first type is aluminum salts, such as aluminum sulfate,