内聚营养源SRB污泥固定化技术最佳污泥选择的研究  

Research of Optimal Selection of Activated Sludge on Immobilized Technology on SRB Sludge with Inner Cohesive Carbon Source

作　　者：方艳[1] 闵小波[1] 柴立元[1] 王娜[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《工业安全与环保》2006年第10期1-4,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(50508044);湖南省科技计划攻关重大专项(05SK1003-1)

摘　　要：以某污水厂的氧化沟污泥和剩余污泥为培养对象,经厌氧驯化成以硫酸盐还原菌(SRB)占优的污泥。在pH值为6.0-7.0,最佳温度为35℃,硫酸盐质量浓度为4 g/L,剩余污泥固定化小球在反应时间为24 h,Zn(Ⅱ)的进水质量浓度为400 mg/L时,Zn(Ⅱ)的去除率达到了100%,而氧化沟污泥固定化小球Zn(Ⅱ)的去除率只有90%左右;剩余污泥固定化小球在反应时间为8 h,Cd(Ⅱ)的进水质量浓度为500 mg/L时,Cd(Ⅱ)的去除率就达到了95%左右,而氧化沟污泥固定化小球Cd(Ⅱ)的去除率不到80%。实验结果表明剩余污泥是硫酸盐还原菌污泥固定化技术的最佳污泥。In this paper, oxidation ditch activated sludge and waste activated sludge from certain sewage plant are considered as cultivatable object which are domesticated dominant activated sludge for sulfate - reducing bacteria（ SRB）by anaerobic. Immobilized SRB sludge beads with inner cohesive carbon source are used to treat Zn- containing and Cd- containing wastewater. Under conditions：pH value was 6.0- 7.0, optimal temperature at 35℃ and the concentration of sulfate was 4 g/L, the rate of Zn（ Ⅱ ） in immobilized beads with oxdation ditch activated sludge reaches 100% when the reaction time is 24 hours and the concentration of Zn（ Ⅱ ） is 400 mg/L,but the removal rate of Zn（ Ⅱ ） in immobilized beads with waste activated sludge reaches only about 90% ;the removal rate of Cd（ Ⅱ ） in immobilized beads with waste activated sludge reaches about 95% when the reaction time is 8 hours and the concentration of Cd（ Ⅱ ） is 500 mg/L,but the removal rate of Cd（ Ⅱ ） in immobilized beads with oxidation ditch activated sludge reaches under 80%. The results show that the waste activated sludge is the optimal sludge in the SBR sludge immobilized technology.

关 键 词：内聚营养源 硫酸盐还原菌(SRB) 固定化技术 最佳活性污泥 

分 类 号：X703[环境科学与工程—环境工程]