作　　者： ; ; ; ; ; ;

机构地区： 湖南大学环境科学与工程学院

出　　处： 《环境科学》 2004年第5期84-88,共5页

摘　　要： 将ASBR反应器和SBR反应器结合组成厌氧水解 SBR工艺用于养猪场废水的处理 ,ASBR反应器作为厌氧水解反应器 ,主要完成对有机物的水解 ,达到初步降解有机物的目的 ,在反应器每次进水量和排水量不大于其有效容积 70 %的前提下 ,研究了ASBR反应器厌氧搅拌段的时间对污水可生化性和对后续SBR脱氮处理效果的影响 .结果表明 ,厌氧搅拌 36h的污水既保持了较高的可生化性 ,出水BOD/COD保持在 0 .4左右 ,又能在后续SBR处理中取得较好的脱氮效果 ,经SBR反应器处理后出水NH+ 4 N <1 0mg/L .通过实验分析进一步确定了好氧SBR反应器运行的最佳工序 ,厌氧水解 SBR运行工序优化后 ,BOD5的总去除率达到 98%以上 ,NH+ 4 N去除率达到 99%以上 ,但出水CODCr达不到排放标准 ,经混凝沉淀处理后方能达标排放 . Anaerobic sequence batch reactor and aerobic sequence batch reactor were combined to treat the piggery wastewater. The ASBR was used to digest the wastewater for primary organic matter removal. Infections of digestion time to the wastewater's BOD/COD and to the nitrogen removal in behind SBR were studied. The result indicated that the wastewater with 36 hours' digestion retained high BOD/COD ratio of about 0.4. The nitrogen removal efficiency of this kind of wastewater in behind SBR was high with the effluent NH + 4 N concentration less than 10mg/L and a removal ratio higher than 99%. The total BOD 5 removal ratio of A/O SBR was higher than 98% but the effluent COD Cr concentration couldn't meet the discharging standard before coagulating sedimentation.

关 键 词： 养猪场废水 厌氧水解 消化 硝化反硝化

领　　域： [环境科学与工程]