从城市污水收集与处理策略分析曝气生物滤池工艺的应用

Application Analysis on Biological AeratedFilter Process from Countermeasure ofCollection and Treatment ofMunicipal Sewage

城市污水处理厂目前存在占地面积大、管道收集系统投资大和不利于污水回用的缺陷。传统污水处理工艺由于负荷低、占地大,难以解决这些缺陷。曝气生物滤池工艺占地小、效率高、能解决污水处理厂的臭气污染问题,使得城市污水处理厂可以靠近市区建设,从而降低管道收集系统投资,为今后污水回用创造条件。从城市污水收集和处理总投资看,污水处理厂分散建设有时更经济,因而曝气生物滤池工艺在分散建设的城市污水处理厂中会得到越来越大的应用。

STPs (Sewage Treatment Plants) have such short-comings as great land occupied, great pipe cost and disadvantage for wastewater reuse. The traditional sewage treatment processes can not dispose such shortcomings because of their low load and great land occupied, BAF (Biological Aerated Filter) process has such advantages as small land used, high efficiency and odor disposal, so STPs can be constructed closely to urban, thus low pipe cost and available for waste-water reuse. Considering the total cost of collecting and treatment of municipal sewage, dispersedly con-structed STPs are sometimes cheaper. So BAF process will be applied wider and wider in dispersedly constructed STPs.