摘要
环境保护是我国的一项基本国策,由于一个城市的工业门类较多,废水排量大,因此城市污水处理是一个非常复杂的工程。污水中含有大量的有害物质,若不经处理直接排放则严重污染自然水体,因此必须对污水进行处理,以使其达到国家排放标准。本文以某工厂实际应用为例,介绍了污水处理过程及PLC在污水处理厂自动控制中的应用,实际运行表明该方案是合理和有效的。
Environmental protection is a basic nation policy of our country.As more industrial categories of a city,a large water displacement,the urban sewage treatment is becoming a very complicated engineering.If the sewage is directly discharged without any treatment,natural water must can be serious polluted because of large amounts of harmful substances contained in the sewage,so we have to deal with the sewage to make it up to the national emission.This paper takes an example of a practical application of a plant,introducing the sewage treatment process and the application for PLC in automatic control of sewage treatment plants.Actual operation shows that the scheme is reasonable and effective.
