摘要
高浓度硫酸根废水直接排入水体会增大水体的盐度,危害水生生物,破坏土壤结构。利用催化铁与厌氧生物耦合技术进行还原硫酸根试验,并与单纯厌氧微生物处理效果对比。结果表明,催化铁的存在能促进SRB还原SO42-,耦合系统比单纯的微生物系统有更大的还原速率和更高的去除率,且更适合较高浓度的SO42-处理。当温度为30℃、pH=7.6时,COD对耦合系统中硫酸盐还原的影响程度不同,当m(COD)/m(SO42-)≤2时,COD越高,还原速率越快,当m(COD)/m(SO42-)>2时,COD对系统还原过程影响很小。
Wastewater with high concentrations of sulfate would increase water salinity,harming aquatic life and destroying the structure of soil if it was discharged into water body directly.The technique of coupling catalyzed iron with anaerobic microbe was employed to reduce sulfate,and a comparison between the effects of coupling system and that of the anaerobic microbe only system was made.The results showed that the catalyzed iron could accelerate the reduction of sulfate in SRB,because compared to that in the anaerobic microbe only system,the sulfate in coupling system had a much higher reduction rate and removal ratio,and the coupling system was more suitable for sulfate treatment.When the temperature was 30 ℃ and pH=7.6,the influence of COD was various in coupling system： when m（COD）/m（SO4^2-）≤2,the higher the concentration of COD,the higher the reduction rate;when m（COD）/m（SO4^2-）〉2,the influence of COD was little.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第5期70-73,共4页
Technology of Water Treatment
基金
国家水体污染控制与治理科技重大专项(2008ZX07211-004)
