Hybrid coagulation-UF processes for spent filter backwash water treatment: a comparison studies for PAFCl and FeCl3 as a pre-treatment

被引：12

作者：

Ebrahimi, Afshin ^{[1
]}

Amin, Mohammad Mehdi ^{[1
]}

Pourzamani, Hamidreza ^{[1
,2
,3
,4
,5
]}

Hajizadeh, Yaghoub ^{[1
]}

Mahvi, Amir Hossein ^{[2
]}

Mahdavi, Mokhtar ^{[3
,4
,5
]}

Rad, Mohammad Hassan Rabie ^{[6
]}

机构：

[1] Isfahan Univ Med Sci, Res Inst Primordial Prevent NonCommunicable Dis, Environm Res Ctr, Dept Environm Hlth Engn, Esfahan, Iran

[2] Univ Tehran Med Sci, Sch Publ Hlth, Tehran, Iran

[3] Isfahan Univ Med Sci, Environm Res Ctr, Esfahan, Iran

[4] Isfahan Univ Med Sci, Sch Hlth, Student Res Comm, Esfahan, Iran

[5] Isfahan Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Esfahan, Iran

[6] Isfahan Water & Wastewater Co, Esfahan, Iran

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2017年 / 189卷 / 08期

关键词：

Spent filter backwash water (SFBW); Coagulation-UF; PAFCl; FeCl3; Wastewater reuse; POLYALUMINUM FERRIC-CHLORIDE; NATURAL ORGANIC-MATTER; DRINKING-WATER; MEMBRANE FILTRATION; MICROFILTRATION MEMBRANES; ULTRAFILTRATION MEMBRANE; PRE-COAGULATION; REMOVAL; MECHANISMS; TURBIDITY;

D O I：

10.1007/s10661-017-6091-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

filter backwash water (SFBW) was investigated through pilot-scale experiments. The pilot plant consisted of pre-sedimentation, coagulation, flocculation, clarification, and ultrafiltration (UF). Two coagulants of PAFCl and FeCl3 were investigated with respect to their performance on treated SFBW quality and UF membrane fouling. At the optimum dose of PAFCl and FeCl3 turbidity removal of 99.6 and 99.4% was attained, respectively. PAFCl resulted in an optimum UV254, TOC, and DOC removal of 80, 83.6, and 72.7%, respectively, and FeCl3 caused the removal of those parameters by 76.7, 80.9, and 65.9%, respectively. PAFCl removed hydrophilic and transphilic constituent better than FeCl3, but FeCl3 had, to some extent, higher affinities to a hydrophobic fraction. It was concluded that PAFCl showed a better coagulation performance in most cases and caused a lower membrane fouling rate compared to FeCl3. Finally, the treated SFBW with both coagulant-UF systems met the drinking water standards.

引用

页数：15

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[1] Effect of pathogen concentrations on removal of Cryptosporidium and Giardia by conventional drinking water treatment [J].