电极-生物复合反应器处理城市污水的初步研究  

Preliminary study on urban wastewater treatment by bio-electrode reactor

作　　者：余川江[1] 张乐华[1] 贾金平[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240

出　　处：《环境污染治理技术与设备》2005年第11期85-88,共4页Techniques and Equipment for Environmental Pollution Control

摘　　要：微生物固定在电极表面,电解水产氢与氧所营造的微环境在一定条件下对生物硝化/反硝化及吸/放磷产生了促进作用,使电极-生物复合反应器在脱除有机污染物的同时强化了生物的脱氮及除磷效果。本试验采用了2套结构与尺寸完全相同的单槽内循环反应器,1套通电,1套不通电,在不同电流强度下比较了2套反应器对污染物的去除效果。反应器中以石墨为阳极,活性炭纤维为阴极,电极-生物复合反应器的总氮去除率可比未通电流的反应器高出30%左右,总磷去除率增加11.5%,而氨氮、COD的去除率都维持在100%和95%左右。试验表明,电流的引入在一定条件下能明显强化生物反应器脱氮除磷效果。In this study, the microorganism were adhered on the surface of electrode. Nitrification/denitrification and phosphrous absorption/release were acomplished in the micro-atmosphere caused by the hydrogen and oxygen produced by electrolysis, therefore the effects of COD, nitrogen and phosphorous removal were reached synchronously in a certain case. There are two same single-case inner-cycle reactors, one was be electrolysed and the other was not. The effect of pollutants removal of two reactors were contrasted with in condition of different electric current. The anode was made of the graphite and cathode was made of activated carbon fiber. The removal of total nitrogen and phosphorus of the electrode-biological reactor are 30% and 11.5% more than that of the control reactor, but the removal of COD and NH4-N both keep at about 100% and 95%. The data show that the current can apparently enhance the effect of nitrogen and phosphorous removal in biofilm-electrode reactor.

关 键 词：生物膜电极 反硝化 电解 城市污水 

分 类 号：X703.1[环境科学与工程—环境工程]