摘要：

碱性品红，酸性媒介藏青RRN,酸性媒介红S-80,三种染料废水均具有高COD_Cr、高色度、有机物含量复杂且不易被微生物降解等特点。本实验所用三种染料废水混合后COD_Cr高达37000mg/L左右，色度高达100000倍左右。本实验先将三种废水进行预沉淀等处理，然后按照10∶1∶1的比例混合，经两级混凝沉淀后，其COD_Cr降至5000mg/L左右，色度降至4000倍左右。并对其进一步处理做了有意义的尝试。

关键词: 染料废水, 混凝沉淀, 预处理

Abstract:

The dyes wastewater of magent a fuchsine、acid chromeming blue RRN and acid chrome fast red S-80 are all cha racterized by high COD_Cr, high colority,complication of organic components,and they are not easy to be biodeg rated.COD_Cr of the mixed wastewater in this experiment is as high as about 37000 mg / L, and colority is as high as 100000 times.I n this experiment, these three kinds of dyes wastewater of fuchsine, RRN and S-80 are predeposited individually before being mixed in the ratio of 10∶1∶1.In terms of two steps of coagulation-sedimentation, COD_Cr of the mixed wastewater is reduced to about 5 000 mg / g while the colority is reduced to about 4000 times.Some meaningful experiments were also made for further treatment of these kinds of dyes wastewater.

Key words: dyes wastewater, coagulation-sedimentation, pretreatment