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　　廢水類型：食品加工廢水

　　廢水特性：食品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)包括谷類(lei)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)、飲(yin)料(liao)生(sheng)產(chan)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)、水(shui)(shui)(shui)(shui)(shui)產(chan)品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)、肉類(lei)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)及釀酒工(gong)(gong)(gong)(gong)業(ye)(ye)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)等。由于(yu)大(da)多數(shu)的(de)(de)(de)(de)食品(pin)(pin)工(gong)(gong)(gong)(gong)業(ye)(ye)在(zai)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)過程中需要大(da)量(liang)用水(shui)(shui)(shui)(shui)(shui),所以(yi)食品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)排(pai)放(fang)(fang)的(de)(de)(de)(de)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)量(liang)很大(da),是我(wo)國(guo)水(shui)(shui)(shui)(shui)(shui)源污(wu)染(ran)大(da)戶之一,食品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)COD排(pai)放(fang)(fang)量(liang)占工(gong)(gong)(gong)(gong)業(ye)(ye)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)COD總排(pai)放(fang)(fang)量(liang)的(de)(de)(de)(de)110/,居(ju)輕工(gong)(gong)(gong)(gong)業(ye)(ye)行業(ye)(ye)第(di)二位。食品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)(de)主要原(yuan)材料(liao)是農、漁、牧、林業(ye)(ye)產(chan)品(pin)(pin),來源十分廣泛(fan),且制(zhi)品(pin)(pin)種類(lei)繁(fan)多,所以(yi)其(qi)排(pai)出的(de)(de)(de)(de)食品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)質(zhi)成(cheng)分復(fu)雜(za),水(shui)(shui)(shui)(shui)(shui)質(zhi)惡劣(lie),若直接排(pai)人水(shui)(shui)(shui)(shui)(shui)體,對環(huan)境(jing)的(de)(de)(de)(de)危害十分嚴重(zhong)。因此,處(chu)理(li)好食品(pin)(pin)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)(fei)水(shui)(shui)(shui)(shui)(shui)對于(yu)環(huan)境(jing)的(de)(de)(de)(de)保護和人類(lei)的(de)(de)(de)(de)健康具有(you)重(zhong)要意義(yi)。

　　處理工藝說明：食品加工(gong)(gong)廢水的處(chu)理(li)(li)(li)按作用原理(li)(li)(li)可(ke)分為:物理(li)(li)(li)處(chu)理(li)(li)(li)法(fa)(fa)、化(hua)學(xue)處(chu)理(li)(li)(li)法(fa)(fa)和(he)(he)生(sheng)物處(chu)理(li)(li)(li)法(fa)(fa)。每一(yi)種(zhong)方法(fa)(fa)又包括(kuo)多種(zhong)工(gong)(gong)藝(yi)(yi)(yi)。物理(li)(li)(li)處(chu)理(li)(li)(li)法(fa)(fa)有(you)篩濾(lv)、撇除、調節、沉淀、氣浮、過濾(lv)、微濾(lv)、離心分離等(deng),前五種(zhong)工(gong)(gong)藝(yi)(yi)(yi)主(zhu)要用于預處(chu)理(li)(li)(li)或一(yi)級(ji)處(chu)理(li)(li)(li),后(hou)三種(zhong)工(gong)(gong)藝(yi)(yi)(yi)主(zhu)要用于深度處(chu)理(li)(li)(li);化(hua)學(xue)處(chu)理(li)(li)(li)法(fa)(fa)有(you)中和(he)(he)法(fa)(fa)、混凝法(fa)(fa)、電(dian)解法(fa)(fa)、氧(yang)(yang)化(hua)還原法(fa)(fa)、離子交(jiao)換法(fa)(fa)、膜分離法(fa)(fa)等(deng);生(sheng)物處(chu)理(li)(li)(li)工(gong)(gong)藝(yi)(yi)(yi)包括(kuo)好氧(yang)(yang)生(sheng)物處(chu)理(li)(li)(li)工(gong)(gong)藝(yi)(yi)(yi)、厭氧(yang)(yang)生(sheng)物處(chu)理(li)(li)(li)工(gong)(gong)藝(yi)(yi)(yi)、穩定塘(tang)工(gong)(gong)藝(yi)(yi)(yi)、土地處(chu)理(li)(li)(li)工(gong)(gong)藝(yi)(yi)(yi)和(he)(he)由上述工(gong)(gong)藝(yi)(yi)(yi)相結合而成的綜(zong)合生(sheng)物處(chu)理(li)(li)(li)工(gong)(gong)藝(yi)(yi)(yi)。而根據(ju)食品加工(gong)(gong)廢水BOD、COD值(zhi)高等(deng)特點,國內外廣(guang)泛(fan)采用的方法(fa)(fa)是生(sheng)物處(chu)理(li)(li)(li)法(fa)(fa)。