生活污水處理工程

生(sheng)(sheng)(sheng)(sheng)活污(wu)(wu)水(shui)(shui)是(shi)居(ju)民(min)日(ri)常生(sheng)(sheng)(sheng)(sheng)活中排出的(de)廢水(shui)(shui)，主要(yao)來源(yuan)于(yu)居(ju)住建筑(zhu)和公共(gong)建筑(zhu)，如(ru)(ru)住宅、機(ji)關、學校、醫院、商店、公共(gong)場(chang)所(suo)及工業企(qi)業衛生(sheng)(sheng)(sheng)(sheng)間等(deng)。生(sheng)(sheng)(sheng)(sheng)活污(wu)(wu)水(shui)(shui)所(suo)含的(de)污(wu)(wu)染(ran)物主要(yao)是(shi)有機(ji)物(如(ru)(ru)蛋(dan)白質、碳水(shui)(shui)化合物、脂肪、尿素(su)、氨氮等(deng)) 和大(da)量病(bing)原微生(sheng)(sheng)(sheng)(sheng)物(如(ru)(ru)寄生(sheng)(sheng)(sheng)(sheng)蟲(chong)卵(luan)和腸道傳(chuan)(chuan)染(ran)病(bing)毒等(deng))。存在于(yu)生(sheng)(sheng)(sheng)(sheng)活污(wu)(wu)水(shui)(shui)中的(de)有機(ji)物極(ji)不穩定，容(rong)易腐(fu)化而產生(sheng)(sheng)(sheng)(sheng)惡臭。細菌(jun)和病(bing)原體以(yi)生(sheng)(sheng)(sheng)(sheng)活污(wu)(wu)水(shui)(shui)中有機(ji)物為營養而大(da)量繁殖，可導致傳(chuan)(chuan)染(ran)病(bing)蔓(man)延流行。因此，生(sheng)(sheng)(sheng)(sheng)活污(wu)(wu)水(shui)(shui)排放前必(bi)須進行處理。

常見生活污水處理流程如下：