改性活性污泥高效处理高浓度硫酸盐废水  

Efficient treatment of high concentration sulfate wastewater by modified aerobic activated sludge

作　　者：柴立元[1] 刘恢[1] 闵小波[1] 王云燕[1] 唐宁[1] 庄明龙[1] 袁林[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2005年第3期431-436,共6页Journal of Central South University:Science and Technology

基　　金：湖南省科技计划重点项目(02CTY2003)

摘　　要：对城市生活污水厂的好氧活性污泥进行厌氧改性,利用改性后的厌氧污泥对高浓度硫酸盐废水进行处理;考察不同有机碳源、体系初始pH值、接种污泥质量、起始硫酸根质量浓度、初始ρ(COD)/ρ(SO2-4)、亚铁离子及通N2方式等因素对厌氧污泥还原硫酸根能力的影响。间歇式试验结果表明在以乳酸钠为有机碳源,pH值为7,接种污泥质量为20g,初始硫酸根质量浓度为3g/L,ρ(COD)/ρ(SO2-4)为1.45,不加亚铁离子及通入N2的条件下,硫酸根的去除率最高;在间歇式试验最优条件进行半连续试验,硫酸根去除率均大于90%,表明在ρ(COD)/ρ(SO2-4)较低的条件下,能快速启动反应器,高效处理高浓度硫酸盐废水。The activated sludge from sewage plant was modified anaerobically to treat a high concentration sulfate-containing wastewater. The various factors affecting the removal of sulfate were investigated, including different carbon sources, initial pH value, amount of sludge inoculum, initial ρ(COD)/ρ(SO42-), ferrous ion and blast of nitrogen. The optimum conditions are obtained, i. e. using sodium lactate as organic carbon source, initial pH value of 7, 3 g/L sulfate, ρ(COD)/ρ(SO42-) of 1. 45, ferrous ion free and blasting N2. The semi-continuous experiment was carried out. The results indicate that the sulfate removal rate reaches above 90% under the above mentioned conditions. And also the sludge can be activated quickly to remove high concentration sulfate at low ρ(COD)/ρ(SO42-).

关 键 词：厌氧反应器 硫酸盐废水 好氧活性污泥 硫酸盐还原菌 改性 

分 类 号：X703.1[环境科学与工程—环境工程]