Drinking water softening with electrocoagulation process: Influence of direct and alternating currents as inductive with different arrangement rod electrodes and polarity inverter

被引：0

作者：

Yaghmaeian K. ^{[1
,2
]}

Mahvi A.H. ^{[1
,2
]}

Nasseri S. ^{[1
,3
]}

Shayesteh M.H. ^{[4
]}

Mansoorian H.J. ^{[1
]}

Khanjani N. ^{[5
]}

机构：

[1] Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran

[2] Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran

[3] Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran

[4] Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran

[5] Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman

来源：

Scientia Iranica | 2020年 / 27卷 / 3 C期

关键词：

Electrocoagulation; Operating current; Polarity inverter; Rod electrode; Water softening;

D O I：

10.24200/SCI.2020.52681.2837

中图分类号：

学科分类号：

摘要：

This study investigates the process of electrocoagulation with direct and alternating currents as inductive using Fe and Al rods with different arrangements and a polarity inverter and based on the factors related to the efficacy of the process for drinking water softening. The efficacy of the electrocoagulation (EC) process was investigated in the batch mode under different conditions. Further, the amount of energy and electrode consumption and the amount of sludge produced were determined. Total hardness (98.26%) and calcium hardness (87.69%) were reduced with the highest efficiency using alternating current with Fe-Al electrode arrangement under optimal conditions (pH of 9, current density of 9 m A / c m 2, and electrolysis time of 12 min). Optimum charge loading was 0.54F/m3. Maximum energy and electrode were consumed at the optimum current density using direct current, which were measured at 2.47 k W h / m 3 and 2.12 k g / m 3, respectively Maximum sludge was produced at optimum current density using alternating current of 0.098 k g / m 3 with the settleability of 0.075 L/g and, also, usine: direct current of 0.109 k g / m 3 with the settleability of 0.063 L/g. This study showed that through the alternating current and using Fe electrodes, EC technology could be used as an alternative, new method for reducing water hardness with high efficiency and low energy consumption. © 2020 Sharif University of Technology. All rights reserved.

引用

页码：1275 / 1292

页数：17

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