Page 71 - 2017地大报告电子书

环境学院发展报告

【环境学院 2017 年发表 T1 及以上学术论文简介】
1.Improvement of wastewater sludge dewatering performance using titanium salt

coagulants (TSCs) in combination with magnetic nano-particles: Significance of titanium
speciation
作 者：WeijunZhang*;ZhanChen;BingdiCao;YoujingDu;CaixiaWang;DongshengWang*;T

engMa*;HuaXia.
WATER RESEARCH 卷 : 110 页 : 102-111 出版年 : MAR 1 2017

摘 要：In this study, the effects of chemical conditioning using titanium salt coagulants
(TSCs) of different hydrolysis speciation in combination with magnetic nano-particles

on dewatering performance of waste activated sludge were evaluated by means of specific
resistance to filtration (SRF) and capillary suction time (CST). The morphological and extracellular

polymeric substances (EPS) properties under chemical
conditioning were investigated in detail to understand

the reaction mechanisms involved. The results showed
that the TSC with basicity of 0.5 performed better in

improving sludge dewatering performance than other
TSCs. Sludge floc formed by TSC0.5treatment was

characterized by larger floc size and higher floc strength
than that conditioned by other TSCs. EPS compression

and densification were the major mechanisms of sludge
conditioning, and TSC0.5 had better performance in

compressing EPS structure. In addition, reduction
of soluble EPS concentration, especially protein-like substances contributed to improvement

of sludge filterability under conditioning. Furthermore, addition of Fe2O3 nanoparticles could
further improve dewatering performance and decrease compressibility of sludge system by acting

as skeleton builders and enhancing floc strength. The sludge particles aggregation efficiency was
effectively improved with addition of nano-Fe2O3. They also were able to bind with protein-like

substance in EPS component, which might contribute to promotion of sludge filterability.
论文链接：https://doi.org/10.1016/j.watres.2016.12.011

2.Remediation of arsenic-contaminated groundwater by in-situ stimulating biogenic

precipitation of iron sulfides
作 者 : KunfuPi;YanxinWang*;XianjunXie*;TengMa;YaqingLiu;ChunliSu;YapengZhu;Zhi

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