氧化沟处理制革废水运行参数的优化研究  

Parameters Optimization of Oxidation Ditch Operating in Treatment of Simulation Tannery Wastewater

作　　者：丁绍兰[1] 龚贵金[1] 朱蕾[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《中国皮革》2013年第1期1-4,共4页China Leather

基　　金：陕西科技大学研究生创新基金资助

摘　　要：针对目前制革废水处理工程中出水不达标问题,通过试验探讨水力停留时间(HRT)、进水pH、COD负荷、NH3—N浓度、活性污泥浓度,对处理制革废水中常用的氧化沟工艺的影响,并进行了优化研究。结果表明:氧化沟进水COD为1500～2500mg/L、NH3—N为180～200mg/L,pH值为8.0,运行污泥浓度在2.6～3.0g/L,曝气时间为18h的COD去除率能达到94%左右,NH3—N去除率达到85%左右。The outfall in the tannery wastewater treatment project could not be satisfied with the standard. The optimization of parameters used in oxidation ditch for tannery wastewater treatment from HRT, the pH values of intake, COD load, NH3--N con- centration and the activated sludge concentration was investigated. The results show in the process of oxidation ditch, when the in- take COD is 1 500 - 2 500mg/L, NHa--N is 180 - 200mg/L, pH is 8.0, the operating sludge concentration is about 2. 6 ~ 3.0g/L and the aeration time is 30h,the removal rate of COD is up to 94%. The NH3--N removal rate is 85%.

关 键 词：氧化沟 COD负荷 NH3-N 污泥装载量 

分 类 号：X703[环境科学与工程—环境工程]