印(yin)染(ran)污(wu)(wu)水是(shi)加工棉(mian)、麻、化(hua)学纤维及(ji)其混纺产品为主(zhu)的(de)印(yin)染(ran)厂排出的(de)污(wu)(wu)水。印(yin)染(ran)污(wu)(wu)水水量较大，每印(yin)染(ran)加工1吨(dun)纺织品耗水100～200吨(dun)，其中80～90%成为污(wu)(wu)水。

污水特点

印(yin)(yin)染印(yin)(yin)刷(shua)污(wu)水(shui)(shui)是较(jiao)难(nan)处理的(de)(de)工业污(wu)水(shui)(shui)之一，它(ta)具有COD浓度高、色度大、含盐量高、有机(ji)物(wu)难(nan)生化降解及水(shui)(shui)质水(shui)(shui)量随时间(jian)变(bian)化较(jiao)大(污(wu)水(shui)(shui)间(jian)歇性排放)等特点，印(yin)(yin)染污(wu)水(shui)(shui)处理突(tu)出的(de)(de)是色度和(he)难(nan)降解有机(ji)物(wu)的(de)(de)去(qu)除(chu)问题(ti)。

处理方法

处(chu)(chu)理(li)印(yin)染(ran)印(yin)刷污(wu)水(shui)(shui)通常采用水(shui)(shui)解(jie)酸(suan)化(hua)(hua)(hua)-生(sheng)(sheng)(sheng)(sheng)物(wu)接触氧化(hua)(hua)(hua)-生(sheng)(sheng)(sheng)(sheng)物(wu)炭(tan)(tan)为主的(de)处(chu)(chu)理(li)工艺，该处(chu)(chu)理(li)工艺是(shi)近几年来在印(yin)染(ran)污(wu)水(shui)(shui)处(chu)(chu)理(li)中采用较(jiao)多、较(jiao)成熟的(de)工艺流(liu)程。水(shui)(shui)解(jie)酸(suan)化(hua)(hua)(hua)的(de)目的(de)是(shi)对(dui)印(yin)染(ran)污(wu)水(shui)(shui)中可(ke)生(sheng)(sheng)(sheng)(sheng)化(hua)(hua)(hua)性(xing)很差(cha)的(de)某些高(gao)分(fen)子(zi)物(wu)质和不溶性(xing)物(wu)质通过(guo)水(shui)(shui)解(jie)酸(suan)化(hua)(hua)(hua)，降解(jie)为小分(fen)子(zi)物(wu)质和可(ke)溶性(xing)物(wu)质，提(ti)高(gao)可(ke)生(sheng)(sheng)(sheng)(sheng)化(hua)(hua)(hua)性(xing)和B/C值(zhi)，为后续好(hao)(hao)氧生(sheng)(sheng)(sheng)(sheng)化(hua)(hua)(hua)处(chu)(chu)理(li)创造条(tiao)件。同时好(hao)(hao)氧生(sheng)(sheng)(sheng)(sheng)化(hua)(hua)(hua)处(chu)(chu)理(li)产(chan)生(sheng)(sheng)(sheng)(sheng)的(de)剩余污(wu)泥(ni)经沉淀(dian)池(chi)(chi)(chi)全部回流(liu)到(dao)厌(yan)氧生(sheng)(sheng)(sheng)(sheng)化(hua)(hua)(hua)段(duan)，进(jin)(jin)行(xing)厌(yan)氧消化(hua)(hua)(hua)，减少整个系统剩余污(wu)泥(ni)排放(fang)，即达(da)到(dao)自身的(de)污(wu)泥(ni)平衡。厌(yan)氧水(shui)(shui)解(jie)酸(suan)化(hua)(hua)(hua)池(chi)(chi)(chi)和生(sheng)(sheng)(sheng)(sheng)物(wu)接触氧化(hua)(hua)(hua)池(chi)(chi)(chi)中均(jun)安装(zhuang)填料(liao)，属(shu)生(sheng)(sheng)(sheng)(sheng)物(wu)膜法处(chu)(chu)理(li)；生(sheng)(sheng)(sheng)(sheng)物(wu)炭(tan)(tan)池(chi)(chi)(chi)装(zhuang)活(huo)性(xing)炭(tan)(tan)并供氧，兼有(you)悬浮生(sheng)(sheng)(sheng)(sheng)长和附(fu)着(zhe)生(sheng)(sheng)(sheng)(sheng)长法特点，脉(mai)冲(chong)进(jin)(jin)水(shui)(shui)的(de)作用是(shi)对(dui)厌(yan)氧水(shui)(shui)解(jie)酸(suan)化(hua)(hua)(hua)池(chi)(chi)(chi)进(jin)(jin)行(xing)搅拌。