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　　廢水類型：預制菜污水

　　廢水特性：預制(zhi)(zhi)(zhi)菜污(wu)(wu)水(shui)(shui)包括谷(gu)類(lei)(lei)加(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)、飲料生產廢(fei)水(shui)(shui)、水(shui)(shui)產品(pin)加(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)、肉類(lei)(lei)加(jia)(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)等。由于(yu)大(da)多數(shu)的(de)(de)(de)食(shi)品(pin)工(gong)(gong)(gong)(gong)業在加(jia)(jia)工(gong)(gong)(gong)(gong)過程中需要大(da)量用水(shui)(shui),所以(yi)(yi)預制(zhi)(zhi)(zhi)菜污(wu)(wu)水(shui)(shui)排放(fang)的(de)(de)(de)廢(fei)水(shui)(shui)量很大(da),是我(wo)國水(shui)(shui)源污(wu)(wu)染大(da)戶(hu)之一,預制(zhi)(zhi)(zhi)菜污(wu)(wu)水(shui)(shui)COD排放(fang)量占工(gong)(gong)(gong)(gong)業廢(fei)水(shui)(shui)COD總排放(fang)量的(de)(de)(de)110/,居(ju)輕工(gong)(gong)(gong)(gong)業行(xing)業第二位。食(shi)品(pin)加(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)主要原(yuan)材料是農、漁、牧、林(lin)業產品(pin),來源十(shi)(shi)分(fen)廣泛,且制(zhi)(zhi)(zhi)品(pin)種類(lei)(lei)繁(fan)多,所以(yi)(yi)其排出的(de)(de)(de)預制(zhi)(zhi)(zhi)菜污(wu)(wu)水(shui)(shui)水(shui)(shui)質(zhi)成分(fen)復雜,水(shui)(shui)質(zhi)惡劣(lie),若直接(jie)排人水(shui)(shui)體,對(dui)(dui)環(huan)境的(de)(de)(de)危害十(shi)(shi)分(fen)嚴重。因此,處理(li)好(hao)預制(zhi)(zhi)(zhi)菜污(wu)(wu)水(shui)(shui)對(dui)(dui)于(yu)環(huan)境的(de)(de)(de)保護和人類(lei)(lei)的(de)(de)(de)健康(kang)具有重要意義。

　　處理工藝說明：預制(zhi)菜(cai)污水的處(chu)(chu)理(li)(li)(li)(li)按作用(yong)(yong)原理(li)(li)(li)(li)可分為:物(wu)(wu)(wu)(wu)理(li)(li)(li)(li)處(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)(fa)、化學處(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)(fa)和生(sheng)(sheng)物(wu)(wu)(wu)(wu)處(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)(fa)。每一(yi)(yi)種(zhong)方法(fa)(fa)(fa)又(you)包(bao)括多種(zhong)工(gong)藝(yi)(yi)(yi)(yi)。物(wu)(wu)(wu)(wu)理(li)(li)(li)(li)處(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)(fa)有篩濾(lv)、撇除、調節(jie)、沉淀、氣(qi)浮、過濾(lv)、微濾(lv)、離(li)(li)心分離(li)(li)等,前(qian)五種(zhong)工(gong)藝(yi)(yi)(yi)(yi)主要(yao)用(yong)(yong)于(yu)預處(chu)(chu)理(li)(li)(li)(li)或一(yi)(yi)級處(chu)(chu)理(li)(li)(li)(li),后三種(zhong)工(gong)藝(yi)(yi)(yi)(yi)主要(yao)用(yong)(yong)于(yu)深度(du)處(chu)(chu)理(li)(li)(li)(li);化學處(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)(fa)有中(zhong)和法(fa)(fa)(fa)、混(hun)凝法(fa)(fa)(fa)、電解法(fa)(fa)(fa)、氧(yang)化還原法(fa)(fa)(fa)、離(li)(li)子(zi)交(jiao)換法(fa)(fa)(fa)、膜分離(li)(li)法(fa)(fa)(fa)等;生(sheng)(sheng)物(wu)(wu)(wu)(wu)處(chu)(chu)理(li)(li)(li)(li)工(gong)藝(yi)(yi)(yi)(yi)包(bao)括好氧(yang)生(sheng)(sheng)物(wu)(wu)(wu)(wu)處(chu)(chu)理(li)(li)(li)(li)工(gong)藝(yi)(yi)(yi)(yi)、厭(yan)氧(yang)生(sheng)(sheng)物(wu)(wu)(wu)(wu)處(chu)(chu)理(li)(li)(li)(li)工(gong)藝(yi)(yi)(yi)(yi)、穩(wen)定塘工(gong)藝(yi)(yi)(yi)(yi)、土地處(chu)(chu)理(li)(li)(li)(li)工(gong)藝(yi)(yi)(yi)(yi)和由上(shang)述工(gong)藝(yi)(yi)(yi)(yi)相結合而(er)成的綜合生(sheng)(sheng)物(wu)(wu)(wu)(wu)處(chu)(chu)理(li)(li)(li)(li)工(gong)藝(yi)(yi)(yi)(yi)。而(er)根據預制(zhi)菜(cai)污水BOD、COD值(zhi)高等特點,國內(nei)外廣(guang)泛采用(yong)(yong)的方法(fa)(fa)(fa)是生(sheng)(sheng)物(wu)(wu)(wu)(wu)處(chu)(chu)理(li)(li)(li)(li)法(fa)(fa)(fa)。