生活污水處理工程

生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)活污(wu)水是(shi)居民日常生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)活中排出(chu)的(de)廢(fei)水，主要來(lai)源于(yu)居住建(jian)筑和公共建(jian)筑，如(ru)住宅、機關、學校、醫院(yuan)、商店、公共場所及工業(ye)企業(ye)衛生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)間等。生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)活污(wu)水所含的(de)污(wu)染(ran)物(wu)主要是(shi)有機物(wu)(如(ru)蛋白(bai)質、碳水化(hua)合(he)物(wu)、脂肪(fang)、尿素(su)、氨氮等) 和大量病原(yuan)微生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(如(ru)寄(ji)生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)蟲卵和腸(chang)道傳染(ran)病毒(du)等)。存在(zai)于(yu)生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)活污(wu)水中的(de)有機物(wu)極不穩定，容易腐化(hua)而(er)產生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)惡臭(chou)。細菌和病原(yuan)體以生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)活污(wu)水中有機物(wu)為營養而(er)大量繁殖，可導致(zhi)傳染(ran)病蔓延流(liu)行。因此，生(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)活污(wu)水排放前(qian)必須進(jin)行處理。

常見生活污水處理流程如下：