硫酸盐还原菌污泥固定化特性  

Characteristics in immobilization process of sulfate reducing bacteria sludge

作　　者：狄军贞[1] 江富[1] 戴男男 朱志涛[1] 

机构地区：[1]辽宁工程技术大学建筑工程学院,阜新123000

出　　处：《环境工程学报》2015年第5期2227-2231,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(41102157)

摘　　要：采用玉米芯为碳源,聚乙烯醇(PVA)为包埋载体,饱和硼酸(H3BO3)为交联剂,研究了硫酸盐还原菌污泥(SRBS)、铁屑、麦饭石共固处理合成煤矿酸性废水的最优配比与机理,并分析了固定化过程中小球稳定性及活性的变化规律。实验结果表明,SRBS投加量是影响处理效果的最显著因子,当投加30%SRBS、2%铁屑、3%麦饭石时SO2-4、Mn2+去除率分别为94.13%和84.39%,溶液p H为7.03,未检测出Fe2+;随着交联时间的延长,小球膨胀率及SO2-4还原率分别呈线性与指数下降,从保持小球稳定性与活性角度考虑,可将交联时间设定为4~8 h;该法可为市政污泥的处置以及生物法处理煤矿酸性废水的工程应用提供技术参考。The optimal ratios among sulfate reducing bacteria sludge( SRBS),scrap iron and maifan stone were investigated where polyving akohol( PVA) and saturated H3BO3 were used as immobilization materials. The stability and activity of the immobilized granular with corncob as inner cohesive nutrient resource were also analyzed in the process of treating synthetic acid mine drainage. The results showed that the dosage of SRBS had the greatest influence on the treatment effect. At the optimized ratios,a mass fraction of SRBS of 30%,scrap iron of2% and maifan stone of 3%,the granular removed up to 94. 13% of sulfate,up to 84. 39% of manganese and ferrous ion was not present in the approximate neutral solution after 5 days. Significant negative correlations were observed between cross-linking time and expansion rate of the granular as well as reduction rate of sulfate. Considering the variations of stability and activity of the granular,the cross-linking time can be selected 4 ~ 8 hours reasonably. The immobilization approach provides technological references for the dispose of municipal sludge and biological remediation of acid mine drainage.

关 键 词：玉米芯 硫酸盐还原菌污泥 铁屑 麦饭石 煤矿酸性废水 

分 类 号：X703[环境科学与工程—环境工程]