Effect of operating parameters on the sludge settling characteristics by treatment of the textile dyeing effluent using electrocoagulation

IF 1 Q4 ENGINEERING, CHEMICAL

Chemical Product and Process Modeling Pub Date : 2023-04-26 DOI:10.1515/cppm-2022-0060

A. Prajapati, D. Sharma, D. Pal, J. Patidar, Shamal Sen

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引用次数: 0

Abstract

Abstract This study invested the impact of the operational parameters (pH, Current Density (CD) and Electrode Gap (EG)) on the sludge generated after electrocoagulation treatment of textile dyeing effluent (TDE) by studying sludge settleability and filterability characteristics of EC generated sludge. Electrocoagulation treatment evaluated at laboratory scale with aluminum as electrode material at operating condition of parameters of pH, CD and EG. (pH-5.5, CD-105.12 A/m2 and EG-2.5 cm). Under these operating conditions, maximum COD reduction was achieved 88.45 % and maximum color reduction was about 66.92 %. Settling characteristics of TDE was studied by sludge volume index (SVI) and Centrifugal settleability index (CSI). From disposal point of view, filterability characteristic was also studied by simple gravity filtration method. Specific cake resistance, α (m/kg), filter medium resistance, Rm(m−1) was also studied. The specific cake resistance was found in the order of 38.4 × 1013 >34.13 × 1013 >22.25 × 1013 >11.19 × 1013 >7.30 × 1013 (m/kg) at the pH 9.5, 7.5, 1.5, 5.5 and 3.5 respectively. While filter medium resistance was found to be 111.22 × 109, 92.28 × 109, 82.33 × 109, 41.38 × 109 and 13.87 × 109 m−1 at pH 7.5, 9.5, 3.5, 5.5 and 1.5 respectively.

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电絮凝法处理纺织印染废水污泥沉降特性的影响

摘要本研究通过研究电絮凝法处理纺织印染废水(TDE)后污泥的沉降性和过滤特性，研究了操作参数(pH、电流密度(CD)和电极间隙(EG))对污泥沉降性的影响。以铝为电极材料，在pH、CD、EG等参数的操作条件下，进行了实验室规模的电凝处理评价。(pH-5.5, CD-105.12 A/m2和EG-2.5 cm)。在此操作条件下，COD最大还原率为88.45 %，颜色最大还原率为66.92 %。采用污泥体积指数(SVI)和离心沉降指数(CSI)研究了TDE的沉降特性。从处理的角度出发，研究了简单重力过滤法的过滤性能。同时研究了滤饼比阻力α (m/kg)和滤料阻力Rm(m−1)。pH值为9.5、7.5、1.5、5.5和3.5时，比饼阻力分别为38.4 × 1013 >34.13 × 1013 >22.25 × 1013 >11.19 × 1013 >7.30 × 1013 (m/kg)。在pH为7.5、9.5、3.5、5.5和1.5时，过滤介质阻力分别为111.22 × 109、92.28 × 109、82.33 × 109、41.38 × 109和13.87 × 109 m−1。

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来源期刊

Chemical Product and Process Modeling ENGINEERING, CHEMICAL-

CiteScore

2.10

自引率

11.10%

发文量

期刊介绍： Chemical Product and Process Modeling (CPPM) is a quarterly journal that publishes theoretical and applied research on product and process design modeling, simulation and optimization. Thanks to its international editorial board, the journal assembles the best papers from around the world on to cover the gap between product and process. The journal brings together chemical and process engineering researchers, practitioners, and software developers in a new forum for the international modeling and simulation community. Topics: equation oriented and modular simulation optimization technology for process and materials design, new modeling techniques shortcut modeling and design approaches performance of commercial and in-house simulation and optimization tools challenges faced in industrial product and process simulation and optimization computational fluid dynamics environmental process, food and pharmaceutical modeling topics drawn from the substantial areas of overlap between modeling and mathematics applied to chemical products and processes.