壳聚糖及硅藻土调理市政污泥.docVIP

壳聚糖及硅藻土调理市政污泥 　　摘要：以污泥比阻为评价指标，综合考虑脱水率、泥饼含水率及过滤时间因素，研究使用壳聚糖与硅藻土对污泥单独调理的最佳条件及联合调理改善污泥脱水性能的效果，并与聚丙烯酰胺调理污泥的效果进行了对比。结果表明，先投加0.5 g/g硅藻土调理污泥，再投加5 mg/g壳聚糖以30 r/min搅拌反应150 s，污泥比阻下降了95.43%，脱水率上升至91.02%，泥饼含水率降至83.13%，过滤时间降至29.5 s。壳聚糖与硅藻土联合调理的效果明显优于壳聚糖或硅藻土单独调理的效果，且其联合调理改善污泥脱水综合性能的效果优于聚丙烯酰胺调理污泥的效果 关键词：污泥调理；壳聚糖；硅藻土；联合调理；污泥比阻 中图分类号：TU992.3文献标志码：A文章编号2017 收稿日期 基金项目：西华大学研究生创新基金（ycjj2016175） 作者简介：李澜（1992），男，主要从事研究方向为污染控制理论与技术研究，（Email）lilanup@163.com 谷晋川（通信作者），男，教授，硕士生导师，（Email）gjc6471@163.com Received Foundation item：Graduate School of Xihua University Innovation Fund Project（ycjj2016175） Author brief：Li Lan（1992）， main research interests： direction for pollution control theory and technology，（Email）lilanup@163.com. Gu Jinchuan（corresponding author）， professor， master supervisor，（Email）gjc6471@163.com.Performante of chitosan and diatomite recuperate municipal sludge Li Lana，Gu Jinchuanb，Zhang Dehanga，Yang Hongmeia，Xu Chia， Xiao Yingxua，Chen Yia （a.Civil Architecture and Environmental Engineering； b.Biological Engineering Institute of Food，Xihua University， Chengdu 610039， P.R. China） Abstract：Based on sludge specific resistance as the evaluation index， considering the sludge dehydration rate， filter cake moisture content and filtration time. To investigate the optimum condition of sludge conditioning with chitosan and diatomite， and the effect of improving sludge dewatering performance，and compared with the effect of polyacrylamide sludge conditioning. Results showed that first dose 0.5 g/g of diatomite recuperate sludge， add the 5 mg/g of chitosan with 30 r/min stirring speed to reaction in 150 s， sludge specific resistance decreased by 95.43%， dehydration rate rose to 91.02%， moisture content of sludge cake down to 83.13%， the filtering time dropped to 29.5 s.The effect of chitosan combined with diatomite recuperate sludge was significantly superior to that of independently conditioning by chitosan or diat