填料型A/O工艺处理养猪废水中试研究  

Pilot-scale Study on Piggery Wastewater Treatment by Anoxic/Oxic Process Modified with Packings

作　　者：沈瀚[1] 王亮[1,2] 李明德[1] 赵赫[3] 赵斌[1,2] 张朝晖[1,2] 张贺[1] 张宏伟[1,2] 

机构地区：[1]天津工业大学环境工程系,天津300387 [2]天津工业大学省部共建分离膜材料与膜过程国家重点实验室,天津300387 [3]河北工业大学土木工程学院,天津300401

出　　处：《中国给水排水》2016年第7期121-125,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51138008;51478314;51308391);天津市重大科技专项(14ZCDGSF00128);天津市自然科学基金资助项目(14JCQNJC09000)

摘　　要：在我国农村地区，高氨氮养猪废水不经处理肆意排放诱发地表水富营养化，极大程度地破坏了周边水环境及生态系统。将短程硝化反硝化和同步硝化反硝化脱氮原理相结合，进行了一体式填料型A／O工艺用于高氨氮养猪废水的处理中试研究。结果表明，装置在处理量为3m^3／d、内回流比为200％的运行条件下，对COD、NH3-N和TN的去除率可分别稳定在86％、87％和73％，出水水质达到《农田灌溉水质标准》（GB5084-2005）要求。试验过程中，好氧池DO浓度控制在0．8～1mg／L，出水NO2^--N积累率达到85％，表明好氧池中氨氮氧化反应以短程硝化为主。好氧池中弹性立体填料挂膜成功后，同步硝化反硝化作用明显。In China＇ s rural areas, the indiscriminate discharge of untreated piggery wastewater containing high ammonia nitrogen posed potential risk of eutrophication to surface water and degraded the surrounding water environment and the ecosystem. The shortcut nitrification and denitrification was combined with the simultaneous nitrification and denitrification, and a novel anoxic/oxic process modified with packings was proposed for the treatment of piggery wastewater. The pilot-scale study results indicated that when the system was operated at a flow rate of 3 m3/d and a reflux ratio of 200%, the removals of COD, NH3 -N and TN were around 86%, 87% and 73%, respectively. The effluent quality could meet the requirements in the Standards for Irrigation Water Quality （GB 5084 -2005 ）. Since the dissolved oxygen （DO） in the aerobic tank was controlled at about 0.8 to 1 mg/L, the accumulation of NO2- - N in the effluent was remarkable, accounting for 85% of the total amount of nitrogen oxides. Therefore, the shortcut nitrification was the major reaction of ammonia oxidation in the aerobic tank. Besides, after the formation of biofilm on the surface of the elastic space packings in the aerobic tank, the process of simultaneous nitrification and denitrification also contributed to the total nitrogen removal significantly.

关 键 词：养猪废水 A/O工艺 弹性立体填料 短程硝化反硝化 同步硝化反硝化 

分 类 号：X713[环境科学与工程—环境工程]