间歇曝气生物接触氧化法处理微污染水实验研究  

Experimental Study on Micro-polluted Water Treatment by Intermittent Aeration Bio-contact Oxidation Process

作　　者：章清琳[1] 丛海兵[1] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225127

出　　处：《环境科技》2011年第2期4-6,共3页Environmental Science and Technology

基　　金：国家"十一五"重大科技专项"水体污染控制与治理"(2009ZX07317-007-1)

摘　　要：实验研究了不同间歇条件下,间歇曝气生物接触氧化法对微污染水的处理效果,比较了其对比连续曝气生物接触氧化法的优越性。结果表明,在曝气强度为4 m3/(m2.h),停曝比为6∶4～9∶1的间歇曝气条件下,间歇曝气生物接触氧化法对氨氮和CODMn平均去除率分别达到69.49%～93.51%和21.12%～24.29%,生物填料上的生物量为265.53～938.63 nmol/m3。在保障溶解氧大于4 mg/L的前提下,停曝比大于等于8∶2,间歇曝气生物接触氧化法处理效果好于连续曝气生物接触氧化法,且比连续曝气生物接触氧化法节省气量60%～80%。An intermittent aeration biological contact oxidation process was used to treat micro-polluted water in experiment.The removal effect of NH4＋-N and CODMn by pulse aeration biological contact oxidation was studied under different intermittent conditions,and superiority of this technology comparing to continuous aeration bio-contact oxidation process was discussed.The results showed that when the intensity of aeration is 4 m3/（m2·h） and the ratio of without aeration time to aeration time is 6：4 to 9：1,the average removal rate of NH4＋-N and CODMn achieved 69.49% to 93.51% and 21.12% to 24.29%,respectively,and the biomass of bio-media was 265.53 nmol/m3 to 938.63 nmol/m3.The effect of intermittent aeration biological contact oxidation process to treat micro-polluted water is better than that in continuous aeration biological contact oxidation process when the ratio of without aeration time to aeration time is not less than 8：2 and the dissolved oxygen is not less than 4 mg/L.The intermittent aeration biological contact oxidation process saved 60% to 80% air volume than that of continuous aeration.

关 键 词：间歇曝气 生物接触氧化 微污染水 节能 

分 类 号：X7[环境科学与工程—环境工程]