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　　廢水類型：食品加工廢水

　　廢水特性：食(shi)(shi)品(pin)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)包(bao)括谷類(lei)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)、飲料(liao)生(sheng)產廢(fei)(fei)水(shui)、水(shui)產品(pin)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)、肉類(lei)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)及釀(niang)酒工(gong)(gong)業(ye)(ye)廢(fei)(fei)水(shui)等。由于(yu)大(da)多數(shu)的食(shi)(shi)品(pin)工(gong)(gong)業(ye)(ye)在加(jia)(jia)工(gong)(gong)過程中需要(yao)大(da)量(liang)用(yong)水(shui),所(suo)以(yi)食(shi)(shi)品(pin)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)排放(fang)(fang)的廢(fei)(fei)水(shui)量(liang)很大(da),是我國水(shui)源污染(ran)大(da)戶之一,食(shi)(shi)品(pin)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)COD排放(fang)(fang)量(liang)占工(gong)(gong)業(ye)(ye)廢(fei)(fei)水(shui)COD總排放(fang)(fang)量(liang)的110/,居輕工(gong)(gong)業(ye)(ye)行業(ye)(ye)第二位(wei)。食(shi)(shi)品(pin)加(jia)(jia)工(gong)(gong)的主要(yao)原材料(liao)是農、漁、牧、林業(ye)(ye)產品(pin),來源十(shi)分廣泛,且制品(pin)種類(lei)繁多,所(suo)以(yi)其排出的食(shi)(shi)品(pin)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)水(shui)質成分復(fu)雜(za),水(shui)質惡劣(lie),若直接排人(ren)水(shui)體,對環(huan)境(jing)的危害十(shi)分嚴重(zhong)。因此,處理好食(shi)(shi)品(pin)加(jia)(jia)工(gong)(gong)廢(fei)(fei)水(shui)對于(yu)環(huan)境(jing)的保護和(he)人(ren)類(lei)的健康具有重(zhong)要(yao)意義。

　　處理工藝說明：食品加(jia)(jia)工(gong)(gong)(gong)廢水的處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)按作用(yong)原理(li)(li)(li)(li)(li)可分為:物(wu)理(li)(li)(li)(li)(li)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)法(fa)(fa)、化學(xue)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)法(fa)(fa)和生物(wu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)法(fa)(fa)。每一種方法(fa)(fa)又包括(kuo)多(duo)種工(gong)(gong)(gong)藝(yi)。物(wu)理(li)(li)(li)(li)(li)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)法(fa)(fa)有篩濾(lv)、撇除、調節、沉(chen)淀、氣浮(fu)、過濾(lv)、微(wei)濾(lv)、離心分離等,前五(wu)種工(gong)(gong)(gong)藝(yi)主要用(yong)于預(yu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)或一級處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li),后(hou)三(san)種工(gong)(gong)(gong)藝(yi)主要用(yong)于深(shen)度(du)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li);化學(xue)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)法(fa)(fa)有中和法(fa)(fa)、混凝法(fa)(fa)、電解法(fa)(fa)、氧(yang)化還原法(fa)(fa)、離子(zi)交換法(fa)(fa)、膜分離法(fa)(fa)等;生物(wu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)包括(kuo)好氧(yang)生物(wu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)、厭(yan)氧(yang)生物(wu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)、穩定塘(tang)工(gong)(gong)(gong)藝(yi)、土地處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)和由(you)上述工(gong)(gong)(gong)藝(yi)相結合而成的綜合生物(wu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)。而根據食品加(jia)(jia)工(gong)(gong)(gong)廢水BOD、COD值高(gao)等特點,國內外廣泛采用(yong)的方法(fa)(fa)是生物(wu)處(chu)(chu)(chu)(chu)理(li)(li)(li)(li)(li)法(fa)(fa)。