Запис Детальніше

Contaminants removal by bentonite amended slow sand filter

Vernadsky National Library of Ukraine

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Поле Співвідношення
 
Title Contaminants removal by bentonite amended slow sand filter
 
Creator Sudhakar M. Rao
Malini, R.
Lydia, A.
Young Lee
 
Subject Физическая химия процессов обработки воды
 
Description Earlier studies have indicated that variability in size, surface texture and charge greatly influence the contaminant removal process in granular media. Based on surface characteristics of montmorillonite, it is anticipated that small addition of this clay would increase adhesion sites for bacterial growth and extracellular polymer production in slow sand filter and thereby enhance its contaminant removal ability. Experiments were performed by permeating groundwater conta-minated with pathogens (total coliform and E. Сoli) and inorganic contaminants through bentonite amended slow sand filter (BASSF). Surprisingly, the BASSF retained inorganic contaminants besides pathogens. Water-leach tests (pH of water leachate ranged from 2 to 9) with spent BASSF specimen indicated that the inorganic contaminants are irreversibly adsorbed to a large extent. It is considered that the combined effects of enhanced - organic matter mediated adhesion sites and increased hydraulic retention time enables the BASSF specimen to retain inorganic contaminants. It is envisaged that BASSF filters could find use in treating contaminated groundwater for potable needs at household and community level.
 
Date 2018-02-20T18:17:35Z
2018-02-20T18:17:35Z
2013
 
Type Article
 
Identifier Contaminants removal by bentonite amended slow sand filter / Sudhakar M. Rao, R. Malini, A. Lydia, Young Lee // Химия и технология воды. — 2013. — Т. 35, № 1. — С. 43-53. — Бібліогр.: 19 назв. — англ.
0204-3556
http://dspace.nbuv.gov.ua/handle/123456789/130749
 
Language en
 
Relation Химия и технология воды
 
Publisher Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України