Microscopic observation of particle reduction in slaughterhouse wastewater by coagulation-flocculation using ferric sulphate as coagulant and different coagulant aids

被引：154

作者：

Aguilar, MI ^{[1
]}

Sáez, J ^{[1
]}

Lloréns, M ^{[1
]}

Soler, A ^{[1
]}

Ortuño, JF ^{[1
]}

机构：

[1] Univ Murcia, Dept Chem Engn, Murcia 30071, Spain

来源：

WATER RESEARCH | 2003年 / 37卷 / 09期

关键词：

coagulation-flocculation; coagulant aids; particle removal; slaughterhouse wastewater;

D O I：

10.1016/S0043-1354(02)00525-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A coagulation-flocculation treatment has been applied to a slaughterhouse liquid effluent, using ferric sulphate as coagulant and activated silica, powdered activated carbon, cationic polyacrylamide, polyvinyl alcohol, polyacrylic acid and anionic polyacrylamide as coagulant aids in order to improve the settling time. Once the optimal conditions had been established (speed and time of stirring during flocculation step, pH, coagulant and coagulant aid doses), the efficiency of the coagulation-flocculation process was studied by comparing the particle size distribution before and after the addition of the coagulant. When ferric sulphate was used without the coagulant aids, particle removal efficiency varied with size, although overall efficiency was quite substantial (87%). The use of coagulant aids improved the removal efficiency, except in the case of activated silica, when it fell to 78%. In all other cases removal efficiency values between 93% (for polyvinyl alcohol) and 99% (for anionic polyacrylamide) were reached. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2233 / 2241

页数：9

共 26 条

[1] Effluent pretreatment by iron coagulation applying various dose pH combinations for optimum particle separation [J].

Adin, A ;

Soffer, Y ;

Ben Aim, R .

WATER SCIENCE AND TECHNOLOGY, 1998, 38 (06) :27-34

[2]

AGUILAR, 1999, THESIS U DE MURCIA

[3]

Aguilar MI, 1996, AFINIDAD, V53, P223

[4]

Aguilar MI, 1998, AN QUIM-INT, V94, P231

[5]

Allen T., 1975, PARTICLE SIZE MEASUR

[6]

[Anonymous], 1995, Standard methods for examination of water and waste water, V19th

[7]

BELTRAN VM, 1980, ING QUIM, V6, P41

[8]

Boller M, 1997, WATER SCI TECHNOL, V36, P239, DOI 10.2166/wst.1997.0129

[9] The use of soluble organic polymers in waste treatment [J].

Bolto, BA ;

Dixon, DR ;

Gray, SR ;

Chee, H ;

Harbour, PJ ;

Ngoc, L ;

Ware, AJ .

WATER SCIENCE AND TECHNOLOGY, 1996, 34 (09) :117-124

[10]

CARTER OC, 1991, ADV FILTR SEP TECHNO, V4, P190

← 1 2 3 →