COD/SO_(4)^(2-)对厌氧处理含硫酸盐低浓度有机废水的影响  

Effect of COD/SO_(4)^(2-)on Anaerobic Treatment of Low Concentration Organic Wastewater Containing Sulfate

作　　者：万晓 邵文歆 郭一令[3] WAN Xiao;SHAO Wen‑xin;GUO Yi‑ling(Pingdu Urban Construction Service Center,Qingdao 266799,China;Central&Southern China Municipal Engineering Design and Research Institute Co.Ltd.,Wuhan 430010,China;School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China)

机构地区：[1]平度市城市建设服务中心,山东青岛266799 [2]中国市政工程中南设计研究总院有限公司,湖北武汉430010 [3]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《中国给水排水》2023年第21期1-6,共6页China Water & Wastewater

摘　　要：采用厌氧膨胀颗粒污泥床反应器处理含硫酸盐低浓度有机废水,考察了进水COD/SO_(4)^(2-)对处理效果的影响。研究显示,进水COD/SO_(4)^(2-)的变化会对反应器的COD去除率和SO_(4)^(2-)还原率产生增加以及降低两个阶段的影响。当COD/SO_(4)^(2-)为15时,COD去除率在65%左右,SO_(4)^(2-)去除率在80%以上;当COD/SO_(4)^(2-)为7时,反应器的处理效果最好,出水COD在450 mg/L以下,COD和SO_(4)^(2-)去除率分别在75%和85%以上;当COD/SO_(4)^(2-)为4时,COD和SO_(4)^(2-)去除率分别降至65%和75%以下。可见,在低浓度有机废水厌氧处理系统中,适量硫酸盐的存在能够促进产甲烷菌与硫酸盐还原菌协同代谢有机物,提高反应器对COD的去除效果。The expanded granular sludge bed(EGSB)reactor was used to treat low concentration organic wastewater containing sulfate,and the removal rule of COD and SO_(4)^(2-)was investigated under different influent COD/SO_(4)^(2-)conditions.The results showed that the influent COD/SO_(4)^(2-)has two stages of increasing and decreasing effect on the removal rate of COD and reduction rate of SO_(4)^(2-).When COD/SO_(4)^(2-)was 15,the COD removal rate was about 65%,and the SO_(4)^(2-)removal rate was above 80%.When COD/SO_(4)^(2-)was 7,the removal effect was the best.The effluent COD was less than 450 mg/L,and the removal rates of COD and SO_(4)^(2-)were more than 75%and 85%respectively.When COD/SO_(4)^(2-)was 4,the removal rates of COD and SO_(4)^(2-)decreased to below 65%and 75%respectively.This study shows that in the anaerobic treatment of low concentration organic wastewater,the presence of an appropriate amount of sulfate can make methanogens and sulfate reducing bacteria metabolize the organic matter synergistically,so as to improve the removal effect of COD in the reactor.

关 键 词：含硫酸盐低浓度有机废水 厌氧消化 厌氧膨胀颗粒污泥床反应器 COD/SO_(4)^(2-) 产甲烷菌 硫酸盐还原菌 

分 类 号：TU992[建筑科学—市政工程]