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　　廢水類型：食品加工廢水

　　廢水特性：食品(pin)(pin)加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)包括谷類加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)、飲料(liao)(liao)生(sheng)產(chan)廢(fei)(fei)(fei)水(shui)(shui)(shui)、水(shui)(shui)(shui)產(chan)品(pin)(pin)加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)、肉類加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)及釀酒工(gong)業(ye)(ye)廢(fei)(fei)(fei)水(shui)(shui)(shui)等(deng)。由于大多(duo)數的食品(pin)(pin)工(gong)業(ye)(ye)在加工(gong)過(guo)程中需要(yao)大量用水(shui)(shui)(shui),所(suo)以(yi)食品(pin)(pin)加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)排放的廢(fei)(fei)(fei)水(shui)(shui)(shui)量很(hen)大,是我(wo)國(guo)水(shui)(shui)(shui)源污(wu)染大戶之一(yi),食品(pin)(pin)加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)COD排放量占工(gong)業(ye)(ye)廢(fei)(fei)(fei)水(shui)(shui)(shui)COD總排放量的110/,居(ju)輕(qing)工(gong)業(ye)(ye)行業(ye)(ye)第二位。食品(pin)(pin)加工(gong)的主要(yao)原材(cai)料(liao)(liao)是農、漁、牧、林業(ye)(ye)產(chan)品(pin)(pin),來源十分廣(guang)泛,且制(zhi)品(pin)(pin)種類繁多(duo),所(suo)以(yi)其排出的食品(pin)(pin)加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)水(shui)(shui)(shui)質成分復雜,水(shui)(shui)(shui)質惡劣,若直(zhi)接排人(ren)水(shui)(shui)(shui)體,對環境(jing)的危害十分嚴重(zhong)。因(yin)此,處理好食品(pin)(pin)加工(gong)廢(fei)(fei)(fei)水(shui)(shui)(shui)對于環境(jing)的保護(hu)和(he)人(ren)類的健康具有重(zhong)要(yao)意(yi)義。

　　處理工藝說明：食品加(jia)(jia)工(gong)(gong)(gong)廢水(shui)的處(chu)(chu)(chu)理(li)(li)(li)(li)按作用原理(li)(li)(li)(li)可分為:物(wu)(wu)理(li)(li)(li)(li)處(chu)(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)、化學處(chu)(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)和生物(wu)(wu)處(chu)(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)。每一種(zhong)方(fang)法(fa)(fa)又包括(kuo)(kuo)多種(zhong)工(gong)(gong)(gong)藝(yi)。物(wu)(wu)理(li)(li)(li)(li)處(chu)(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)有篩濾、撇(pie)除、調節、沉(chen)淀、氣浮、過濾、微濾、離心分離等,前五(wu)種(zhong)工(gong)(gong)(gong)藝(yi)主要用于預處(chu)(chu)(chu)理(li)(li)(li)(li)或一級處(chu)(chu)(chu)理(li)(li)(li)(li),后三(san)種(zhong)工(gong)(gong)(gong)藝(yi)主要用于深度處(chu)(chu)(chu)理(li)(li)(li)(li);化學處(chu)(chu)(chu)理(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)、離子交換法(fa)(fa)、膜分離法(fa)(fa)等;生物(wu)(wu)處(chu)(chu)(chu)理(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)包括(kuo)(kuo)好氧(yang)生物(wu)(wu)處(chu)(chu)(chu)理(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)、厭氧(yang)生物(wu)(wu)處(chu)(chu)(chu)理(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)、穩定塘工(gong)(gong)(gong)藝(yi)、土地處(chu)(chu)(chu)理(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)和由上述工(gong)(gong)(gong)藝(yi)相結合而成的綜(zong)合生物(wu)(wu)處(chu)(chu)(chu)理(li)(li)(li)(li)工(gong)(gong)(gong)藝(yi)。而根據食品加(jia)(jia)工(gong)(gong)(gong)廢水(shui)BOD、COD值高(gao)等特點,國內(nei)外廣泛采用的方(fang)法(fa)(fa)是生物(wu)(wu)處(chu)(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)。