Electrochemical treatment of industrial cooling tower blowdown water using magnesium-rod electrode

被引：22

作者：

Abdel-Shafy, Hussein, I ^{[1
]}

Shoeib, Madiha A. ^{[2
]}

El-Khateeb, Mohamed A. ^{[1
]}

Youssef, Ahmed O. ^{[3
]}

Hafez, Omar M. ^{[4
]}

机构：

[1] Natl Res Ctr, Water Res & Pollut Control Dept, POB 12622, Cairo, Egypt

[2] Cent Met Res & Dev Inst CMRDI, Surface Coating Dept, POB 12422, Cairo, Egypt

[3] Ain Shams Univ, Fac Sci, Dept Chem, POB 11566, Cairo, Egypt

[4] Helwan Fertilizer Co HFC, Chem Labs Sect, POB 1081, Cairo, Egypt

来源：

WATER RESOURCES AND INDUSTRY | 2020年 / 23卷

关键词：

Cooling tower blowdown water; Electrocoagulation; Magnesium-rod electrode; Scale ions removal; Operating cost; Sludge characterization; WASTE-WATER; ELECTROCOAGULATION PROCESS; PROCESS OPTIMIZATION; DRINKING-WATER; IN-SITU; REMOVAL; SURFACE; SILICA; SPECTROSCOPY; PARAMETERS;

D O I：

10.1016/j.wri.2019.100121

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Cooling tower blowdown water (CTBW) was treated with simple electrocoagulation (EC) using magnesium-rod electrode. This study examined the effects of the treatment parameters (current density, electrolysis time, electrode distance, initial pH and stirring speed) on the EC ability to remove hardness ions (Ca-2(+), Mg-2(+)) and dissolved silica from CTBW. Under the optimized condition, magnesium-rod electrode removed 51.80% and 93.70% respectively for total hardness and silica; with an operating cost of 0.88 US$/m(3) treated CTBW. EC sludge has been characterized by SVI, SEM-EDX, XRD, and FTIR exploring the ability of sludge to settle, surface morphology, elemental composition, crystalline type, and functional groups. It can be concluded that EC using magnesium-rod electrode can be successfully applied for the treatment of CTBW to facilitate its reuse.

引用

页数：13

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