造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)廢(fei)水是指(zhi)制(zhi)(zhi)(zhi)漿(jiang)造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)工(gong)(gong)藝過(guo)(guo)程中產(chan)生(sheng)(sheng)的廢(fei)水，一(yi)般包括制(zhi)(zhi)(zhi)漿(jiang)工(gong)(gong)藝產(chan)生(sheng)(sheng)的煮廢(fei)液、洗(xi)滌廢(fei)液、漂白(bai)(bai)廢(fei)液、紙(zhi)(zhi)(zhi)(zhi)(zhi)機白(bai)(bai)水等(deng)(deng)。造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)廢(fei)水由于(yu)成(cheng)(cheng)分較為復雜、可(ke)回收處(chu)理性較差，屬于(yu)較難(nan)處(chu)理的工(gong)(gong)業廢(fei)水之，也(ye)是當前(qian)我(wo)國主要的工(gong)(gong)業污染源之一(yi)。當前(qian)，我(wo)國造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)企業在(zai)造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)過(guo)(guo)程中多(duo)采用草(cao)稈、木(mu)漿(jiang)等(deng)(deng)原料，經過(guo)(guo)制(zhi)(zhi)(zhi)漿(jiang)、洗(xi)漿(jiang)、漂白(bai)(bai)、造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)等(deng)(deng)多(duo)重(zhong)工(gong)(gong)序來(lai)完(wan)成(cheng)(cheng)造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)過(guo)(guo)程，其中還會涉及堿(jian)法(fa)(fa)制(zhi)(zhi)(zhi)漿(jiang)、化(hua)學機械(xie)法(fa)(fa)制(zhi)(zhi)(zhi)漿(jiang)和(he)(he)機械(xie)法(fa)(fa)制(zhi)(zhi)(zhi)漿(jiang)等(deng)(deng)諸多(duo)制(zhi)(zhi)(zhi)作方(fang)法(fa)(fa)，但(dan)是無論何種工(gong)(gong)序和(he)(he)制(zhi)(zhi)(zhi)作方(fang)法(fa)(fa)，都會產(chan)生(sheng)(sheng)大量懸(xuan)浮(fu)物及生(sheng)(sheng)化(hua)需(xu)氧量、化(hua)學需(xu)氧量和(he)(he)部分有毒物質，產(chan)生(sheng)(sheng)造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)廢(fei)水污染。造(zao)(zao)(zao)紙(zhi)(zhi)(zhi)(zhi)(zhi)廢(fei)水成(cheng)(cheng)分復雜，可(ke)生(sheng)(sheng)化(hua)性差，屬于(yu)較難(nan)處(chu)理的工(gong)(gong)業廢(fei)水。

　　造紙廢水經過預處理后會提高一定的可生化性，這樣就能進入生化系統，經過生化降解后進入深度處理系統。經過深度處理后回用至生產車間。反滲透的濃縮液通過蒸發器處理后實現污染物的完全固化進而實現零排放。

造紙廢水中水回用工藝：

造紙廢水零排放工藝：