Abstract: The wastewater from rubber accelerant production has been classified and collected. It is ascertained that the combined evaporation desalination-Fe-C micro-electrolysis-biochemical(activated sludge) process should be used for the treatment of this kind of wastewater. The results show that in the evaporation desalination stage,the eff-luent COD is only 3 112 mg/L,and the mass fraction of organic substances evaporated from salt 40%, when the evaporation capacity is 80%. In the Fe-C micro-electrolysis stage,the removing rate of COD is 31.15%,and B/C is increased to 0.303. Under the following conditions:reaction time is 4 h,pH value 3.5,and Fe/C ratio 2:1. In the biological (activated sludge) treatment stage,the effluent COD stabilizes at 100 mg/L and reaches the First-level national level of emission standard,the SOUR value of the activated sludge also stabilizes at about 45 mgO₂/(gMLSS·h), after the sludge has been cultivated and domesticated for 32 days.

Key words: rubber accelerant wastewater, evaporation desalination, Fe-C micro-electrolysis, biochemical treatment

摘要： 对橡胶促进剂生产废水进行分类收集，确定了采用蒸发脱盐-Fe-C微电解-生化法联合的方法处理。试验结果表明，在蒸发脱盐阶段，蒸发量为80%时，出水COD仅为3 112 mg/L，蒸出来的盐中有机物质量分数达40%；在Fe-C微电解阶段，反应时间为4 h，废水pH为3.5，铁碳比为2∶1，COD的去除率可达31.15%，B/C可提高到0.303；生化处理（SBR工艺）阶段，对活性污泥进行培养和驯化32 d后，出水COD稳定在100 mg/L以下，达到国家一级排放标准，活性污泥SOUR也稳定在45 mgO₂/（gMLSS·h）左右。

关键词: 橡胶促进剂废水, 蒸发脱盐, Fe-C微电解, 生化处理

CLC Number: 

• X703.1