COD/SO_4^(2-)值对硫酸盐废水厌氧消化的影响  

The Effect of COD/SO_4^(2-) Ratio on the Anaerobic Digestion of Sulfate Wastewater.

作　　者：丁琼[1] 胡纪萃[1] 顾夏声[1] 

机构地区：[1]清华大学环境工程系,北京100084

出　　处：《环境科学》1993年第1期7-12,共6页Environmental Science

基　　金：国家自然科学基金

摘　　要：采用间歇试验方式,研究了COD/SO_4^(2-)值对硫酸盐废水厌氧消化的影响。试验结果表明,COD/SO_4^(2-)值是影响厌氧消化处理效果的主要参数。本试验中,COD/SO_4^(2-)>15,硫酸盐还原作用对厌氧反应器影响甚微;COD/SO_4^(2-)=5—15时,硫酸盐还原作用对厌氧反应器产生轻度抑制,相对产甲烷率为79.2％—94.7％;COD/SO_4^(2-)=0.5—5时,反应器受中度抑制,相对产甲烷率为61.6％—79.2％;COD/SO_4^(2-)<0.5时,反应器受严重抑制。COD/SO_4^(2-)≥1时,相对产甲烷率与COD/SO_4^(2-)值之间有很好的线性关系。The effect of COD/SO42- ratio on anaerobic digestion of sulfate containing high strength organic wastewater was studied with batch test method. Experimental results show that COD/SO42- ratio is an important factor which influences the anaerobic digestion of the wastewater. In this study, when COD/ SO42- was more than 15, the reduction of sulfates hadlittle or basically no inhibition effect on the anaerobic digestion. When COD/SO42- was between 5 to 15, the reducti- on of sulfates had slight inhibition effect on the anaerobic digestion and the relative methane-producing rate was 79.2% to 94.7% When COD/SO42- was 0.5 to 5, the inhibition effect of sulfate reduction on anaerobic digestion was moderate and the relative me-thone-producing rate was 61.6% to 79.2% When COD/SO42- was below 0.5, the anaerobic digestion would be severely inhibited. Experimental results also show that when COD/SO42- was greater than 1, a limear relationship between relative methane-producing rate and COD/SO42- ratio existed.

关 键 词：COD 厌氧消化 硫酸盐 废水 

分 类 号：X703[环境科学与工程—环境工程]