Chemistry of alkaline and non-alkaline scaling in community RO for brackish water treatment operated with and without antiscalant doses

Author:

Soti Abhishek1,Gupta Akhilendra B.1ORCID

Affiliation:

1. Department of Civil Engineering, Malaviya National Institute of Technology, Jaipur 302017, Rajasthan, India

Abstract

Abstract About 3,500 small community based reverse osmosis (RO) plants have been installed in Rajasthan, India to comply with the recent Government of India guidelines for drinking water quality in rural areas. This paper presents the performance of four RO plants of Bharatpur, which face frequent replacement of membrane modules primarily due to accelerated scaling of carbonates and sulphates of calcium. A detailed chemical analysis of different streams from these plants was carried out to assess the reasons of scaling through a mass balance approach. The chemical analysis was substantiated through ion balance and the scaling potentials were analysed through different saturation indices. Efficacy of antiscalant usage plants was further assessed through mass balance approach followed by detailed characterization of the RO membrane to understand the complete fouling process, which brought out subtle differences in brackish and seawater desalination. The membranes adopting commonly used antiscalant showed an enhanced life span of 2–2.5 year by reducing calcium carbonate scaling but not calcium sulphate scaling. This study highlights the requirement of customized antiscalant application according to the feed characteristics. With a better understanding of the fouling phenomenon, this study would help enhance the life of membrane in RO plants treating brackish water.

Funder

WSSO, Public Health Engineering Department, Rajasthan, India

Publisher

IWA Publishing

Subject

Water Science and Technology

Reference36 articles.

1. Scale inhibition in desalination applications: An overview;Amjad,1996

2. Protein (BSA) fouling of reverse osmosis membranes: Implications for wastewater reclamation

3. Scale formation and control in high pressure membrane water treatment systems: A review

4. Enhancement of surface properties and performance of reverse osmosis membranes after surface modification: A review

5. BIS 2012 Indian Standards Drinking Water Specifications IS 10500:2012, Bur. Indian Stand. Drink. Water Specif. 2, 11. Available from: http://cgwb.gov.in/Documents/WQ-standards.pdf.

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3