Coagulation effect and floc properties of polyferric silicate sulphate and polyferric sulphate in the Yellow River water treatment

被引：5

作者：

Cao BaiChuan ^{[1
]}

Gao BaoYu ^{[1
]}

Yue QinYan ^{[1
]}

Fu Ying ^{[2
]}

Xu ChunHua ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Peoples R China

[2] Jinan Univ, Sch Civil & Architecture, Jinan 250022, Peoples R China

来源：

SCIENCE CHINA-CHEMISTRY | 2010年 / 53卷 / 03期

关键词：

ferric based inorganic polymer coagulants; the Yellow River water; floc growth; floc strength; floc breakage and re-growth; NATURAL ORGANIC-MATTER; HYDROXIDE FLOCS; BREAKAGE; STRENGTH; REGROWTH; PACL;

D O I：

10.1007/s11426-010-0049-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two inorganic polymer coagulants, polyferric silicate sulphate (PFSS) and polyferric sulphate (PFS), were comparatively evaluated in the Yellow River water treatment. The removal efficiency of turbidity and UV254 were investigated, and the zeta potential was measured. An online laser scatter instrument was used to determine the size distribution of flocs formed in the coagulation processes. Compared with PFS, PFSS forms flocs with higher growth rates and larger sizes. The formed flocs were exposed to a series of shear forces, and the floc strength was measured from the relationship between the applied shear speed and the resulting floc size. The flocs formed by PFSS had a higher strength. The floc breakage (expressed as breakage factor, B-f) and re-growth ability (expressed as breakage factor, R-f) under different shear forces and different shear periods were investigated, and it was found that larger B-f and R-f appeared after exposure to stronger shear force and longer shear period. Under the same shear condition, the flocs formed by PFSS showed a larger B-f while the flocs formed by PFS had better re-growth ability.

引用

页码：664 / 670

页数：7

共 24 条

[1] A conceptual view of floc structure in the sweep floc domain [J].

Bache, DH ;

Johnson, C ;

McGilligan, JF ;

Rasool, E .

WATER SCIENCE AND TECHNOLOGY, 1997, 36 (04) :49-56

[2] On the strength and character of alumino-humic flocs [J].

Bache, DH ;

Rasool, E ;

Moffat, D ;

McGilligan, FJ .

WATER SCIENCE AND TECHNOLOGY, 1999, 40 (09) :81-88

[3] Particles under stress [J].

Boller, M ;

Blaser, S .

WATER SCIENCE AND TECHNOLOGY, 1998, 37 (10) :9-29

[4] STRENGTH OF ALUMINUM HYDROXIDE FLOCS [J].

FRANCOIS, RJ .

WATER RESEARCH, 1987, 21 (09) :1023-1030

[5]

Fu Y., 2008, ENV SCI, V29, P92

[6]

Fu Ying, 2007, Journal of Jilin University (Engineering and Technology Edition), V37, P709

[7]

Fu Ying, 2007, Huanjing Kexue, V28, P113

[8]

GAO BY, 1993, ENV SCI, V7, P46

[9] How the natural organic matter to coagulant ratio impacts on floc structural properties [J].

Jarvis, P ;

Jefferson, B ;

Parsons, SA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (22) :8919-8924

[10] Breakage, regrowth, and fractal mature of natural organic matter flocs [J].

Jarvis, P ;

Jefferson, B ;

Parsons, SA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (07) :2307-2314

← 1 2 3 →