生长因子对SRB处理硫酸盐废水的影响研究

Research on the effect of growth factors on the treatment of wastewater containing sulfate by SRB

采用实验室模拟手段,研究了静态条件下硫酸盐还原菌(Sulfate Reducing Bacteria,SRB)对硫酸盐废水的处理效果,考察了菌液接种量、初始pH、碳源种类、m(COD)/m(SO_4^(2-))等生态因子对处理效果的影响。结果表明,增加菌液量、提升pH、提高m(COD)/m(SO_4^(2-))均可提升SO_4^(2-)去除率;以乳酸钠、葡萄糖、甘油、甲酸作为碳源时,SRB利用这4种碳源对SO_4^(2-)的还原率由大到小依次为甲酸>乳酸钠>甘油>葡萄糖。该研究对SRB处理硫酸盐废水的工程应用具有一定的指导意义。

By means of laboratory simulation,the treatment effect of sulfate reducing bacteria（SRB） on sulfatecontaining wastewater,under static condition,has been studied. The influences of ecological factors,such as microbial inoculation amount,initial p H,carbon sources species,m（COD）/m（SO_4（2-））,etc. on the treatment of sulfate containing wastewater are investigated. The results show that the SO_4（2-） removing rate could be improved by increasing the amount of bacteria,p H and the ratio of m（COD）/m（SO_4（2-））. Using sodium lactate,glucose,glycerol and formic acid as carbon sources,the SO_4（2-） recovering rate sequence,of the four kinds of carbon sources,from high to low,are as follows：formic acidsodium lactateglycerolglucose. The research on the application of SRB to the treatment of wastewater containing sulfate has certain directive significance.