电渗透-过硫酸铵协同污泥脱水过程中胞外聚合物的变化

doi:10.16085/j.issn.1000-6613.2018-0104

化工进展 ›› 2018, Vol. 37 ›› Issue (11): 4468-4475.DOI: 10.16085/j.issn.1000-6613.2018-0104

电渗透-过硫酸铵协同污泥脱水过程中胞外聚合物的变化

李亚林, 刘蕾, 刘晓彤, 侯金金, 李晓冉, 楚云鹏

河南工程学院资源与环境学院, 河南郑州 451191

收稿日期:2018-01-12 修回日期:2018-07-08 出版日期:2018-11-05 发布日期:2018-11-05
通讯作者: 李亚林(1984-),男,副教授,主要研究方向为固体废物处理处置与资源化。E-mail:li_ya_lin@haue.edu.cn。
作者简介:李亚林(1984-),男,副教授,主要研究方向为固体废物处理处置与资源化。E-mail:li_ya_lin@haue.edu.cn。
基金资助:
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）。

Variation of extracellular polymeric substances in sewage sludge dewatering by coordination of electro-osmosis and ammonium persulfate

LI Yalin, LIU Lei, LIU Xiaotong, HOU Jinjin, LI Xiaoran, CHU Yunpeng

Department of Resources and Environment, Henan Institute of Engineering, Zhengzhou 451191, Henan, China

Received:2018-01-12 Revised:2018-07-08 Online:2018-11-05 Published:2018-11-05

摘要/Abstract

摘要： 为了研究电渗透-过硫酸盐协同污泥深度脱水的机制，利用自制装置对市政污水处理厂的污泥进行了脱水研究，系统研究了在过硫酸铵投加量、电压梯度、污泥厚度和机械压力的操作条件下，污泥中胞外聚合物的组分（蛋白质和多糖）变化情况及对污泥脱水效果的影响。结果表明，在过硫酸铵投加量为30mg/gDS、电压为25V/cm、污泥厚度为2.0cm、机械压力为23.1kPa条件下，污泥含水率可以降低至57.4%。不同脱水条件均会造成胞外聚合物组分变化，其中过硫酸铵加量和电压是影响胞外聚合物组分以及污泥脱水效果的主要因素。

关键词: 电渗透, 氧化, 废物处理, 污泥, 脱水, 胞外聚合物

Abstract: In order to investigate the mechanisms of sewage sludge dewatering by coordination of electro-osmosis and ammonium persulfate, dewatering of dewatered sludge from sewage treatment plant was studied by self-made experimental device. The composition changes of extracellular polymeric substances (protein and polysaccharide) in sludge and their effects on sludge dewatering were investigated under the conditions of ammonium persulfate dosage, voltage gradient, sludge thickness, and mechanical pressure. The results showed that the water content can be reduced to 57.4% with ammonium persulfate dosage of 30mg/g DS, voltage of 25V/cm, anode-cathode distance of 2.0 cm, mechanical pressure of 23.1kPa. The changes of extracellular polymeric substances components were caused by different dewatering conditions. The ammonium persulfate dosage and voltage are the main factors that affect the extracellular polymer composition and sludge dewatering effect.

Key words: electro-osmotic, oxidation, waste treatment, sewage sludge, dewatering, extracellular polymeric substances

中图分类号:

X705

李亚林, 刘蕾, 刘晓彤, 侯金金, 李晓冉, 楚云鹏. 电渗透-过硫酸铵协同污泥脱水过程中胞外聚合物的变化[J]. 化工进展, 2018, 37(11): 4468-4475.

LI Yalin, LIU Lei, LIU Xiaotong, HOU Jinjin, LI Xiaoran, CHU Yunpeng. Variation of extracellular polymeric substances in sewage sludge dewatering by coordination of electro-osmosis and ammonium persulfate[J]. Chemical Industry and Engineering Progress, 2018, 37(11): 4468-4475.

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电渗透-过硫酸铵协同污泥脱水过程中胞外聚合物的变化

Variation of extracellular polymeric substances in sewage sludge dewatering by coordination of electro-osmosis and ammonium persulfate

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