化工进展2017，Vol.36Issue(5)：1919-1926,8.DOI:10.16085/j.issn.1000-6613.2017.05.046
电渗透-过硫酸铵氧化协同强化污泥深度脱水
Coordination of electro-osmosis and ammonium persulfate on sewage sludge deep-dewatering
摘要
Abstract
Dewatered sewage sludge from sewage treatment plant was studied by self-made experimental reactor dewatering based on electro-osmotic-ammonium persulfate oxidation process which is influenced by the voltage gradient,mechanical pressure,dewatered sewage sludge thickness and persulfate dosage. Furthermore,response surface methodology has been applied according to the Box-Benhnken center-united experimental design principle to optimize parameters of electro-osmotic dewatering as a response index to indicate the reduction ratio of sludge water content. Meanwhile,the effect of constituent and distribution of extracellular polymeric substance on electroosmotic dewatering behavior of sludge was investigated. The results showed that the dewaterability can be improved by the combined of electro-osmosis-ammonium persulfate oxidation process. The combined effects of the dewatered sewage sludge thickness & voltage gradient and the sludge thickness & persulfate dosage are significant. The water content can be reduced to below 40% with voltage gradient of 24.97 V/cm, mechanical pressure of 35.95 kPa,persulfate dosage of 39.81 mg/g DS,sludge thickness of 2.35 cm. The protein content in extracellular polymeric substance is significantly correlated with the final water content of sludge after electro-osmotic- ammonium persulfate oxidation dewatering process.关键词
电渗透/过硫酸铵/氧化/废物处理/污泥/脱水Key words
electro-osmosis/ammonium persulfate/oxidation/waste treatment/sewage sludge/dewatering分类
资源环境引用本文复制引用
李亚林,刘蕾,侯金金,刘晓彤,韩宁宁..电渗透-过硫酸铵氧化协同强化污泥深度脱水[J].化工进展,2017,36(5):1919-1926,8.基金项目
河南省科技攻关项目(162102310402)、郑州市科技攻关项目(20150237)及河南工程学院博士基金项目(D2015008). （162102310402）
