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  • 王森,程赛鸽,肖雪莉,来凡.Fe2+活化过硫酸盐对市政污泥EPS性能的影响[J].环境工程学报,2019,13(9):2243-2249.DOI:10.12030/j.cjee.201812151    [点击复制]
  • WANG Sen,CHENG Saige,XIAO Xueli,LAI Fan.Effect of Fe2+ activated persulfate on EPS properties of sewage sludge[J].,2019,13(9):2243-2249.DOI:10.12030/j.cjee.201812151   [点击复制]
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Fe2+活化过硫酸盐对市政污泥EPS性能的影响
王森1,2, 程赛鸽1,2, 肖雪莉1, 来凡1
0
(1. 陕西科技大学环境科学与工程学院,西安 710021;2. 陕西科技大学,轻化工程国家级实验教学示范中心,西安 710021)
摘要:
针对污泥难以脱水、处理难度大的问题,通过过硫酸盐高级氧化技术联合造纸污泥作为骨架对市政污泥进行调理,以泥饼含水率、污泥比阻(SRF)、毛细吸水时间(CST)、胞外聚合物(EPS)中蛋白质和多糖的分布关系,以及滤饼和滤液中总氮、总磷含量为指标,研究Fe2+活化过硫酸盐联合造纸污泥骨架构建体对EPS的影响。结果表明:将造纸污泥与市政污泥1∶2混合,再添加过硫酸盐和Fe2+,对污泥的调理效果最好,泥饼的含水率由74.52%降至69.57%,SRF降低了66.23%;蛋白质和多糖的分布关系为S-EPS>LB-EPS>TB-EPS,滤饼中总氮所占比例由94.60%下降至65.62%,EPS被有效破解,污泥脱水效果显著改善。
关键词:  市政污泥  造纸污泥  骨架  胞外聚合物(EPS)
DOI:10.12030/j.cjee.201812151
投稿时间:2018-12-21
基金项目:陕西省科技计划项目(2018SF-377);轻化工程国家级实验教学示范中心(陕西科技大学)开放课题(2018QGSJ02-04);西安市科技计划项目(2017068CG/RC031(SXKD002));陕西省技术创新引导专项基金资助项目(2019CGXNG-039)
Effect of Fe2+ activated persulfate on EPS properties of sewage sludge
WANG Sen1,2, CHENG Saige1,2, XIAO Xueli1, LAI Fan1
(1. School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China;2. National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology,Xi'an 710021, China)
Abstract:
In response to the difficulty in sewage sludge dewatering and treatment, the combination of Fe2+-activated persulfate oxidation and skeleton builders of paper sludge was used to condition the sewage sludge. In this study, moisture content of sludge cake, specific resistance to filtration (SRF), capillary sunction time (CST), the distribution of protein and polysaccharide in the EPS, and the total nitrogen and total phosphorus content in the filter cake and filtrate were used to evaluate the effect of above combination on the EPS. The result showed that when the sewage sludge was mixed with the paper sludge with a ratio of 1:2, the addition of Fe2+ and persulfate could result in the best dewaterability effect. The moisture content of sludge cake decreased from 74.52% to 69.57%, and the SRF was reduced by 66.23%. The distribution of protein and polysaccharide was S-EPS>LB-EPS>TB-EPS, and the proportion of total nitrogen in cake decreased from 94.60% to 65.62%. The EPS was effectively disrupted, and the sludge dewaterability was significantly improved.
Key words:  sewage sludge  paper sludge  skeleton  extracellular polymeric substance (EPS)