The University of Southampton
University of Southampton Institutional Repository

Seawater bittern for the treatment of alkalized industrial effluents

Ayoub, G.M., Merhebi, F., Acra, A. and El-Fadel, M. (2000) Seawater bittern for the treatment of alkalized industrial effluents Water Research, 34, (2), pp. 640-656. (doi:10.1016/S0043-1354(99)00162-1).

Record type: Article

Abstract

The efficacy of magnesium-enriched liquid bittern in the treatment of a variety of industrial wastewaters was investigated. Fresh samples of effluents collected from such industries as ceramic, pulp and cardboard, dairy products, marble tiles, tannery and ready-mix concrete were initially adjusted to pH levels of 11.4±0.1 by the addition of slaked lime. Serial dosages of liquid bittern were added, and the jar test technique was used to determine the impact of the process on a number of determinant parameters. The investigation also included bacterial population suppression, and carbonation involving the use of dry ice (CO2) to adjust the effluent pH in order to meet discharge standards.

The liquid bittern, with a potential for mass production by solar evaporation of seawater in coastal areas, was found to be an effective and economic coagulant in the treatment of industrial wastewaters. Turbidity and total suspended solids removals have exceeded 95%, while the chemical oxygen demand removals ranged from 40 to 99%, depending on the type of industry. Besides its reduced bulk when compared to seawater as the Mg2+ source, liquid bittern has the added advantage of inducing the least increase in total dissolved solids in the treated effluent. A high degree of total and fecal coliform bacteria were removed from the supernatant liquid under the experimental conditions applied. Additions of (CO2) in amounts ranging from 3.8 to 46.6 ml/l depending on pH and alkalinity prior to carbonation of the effluent were needed to neutralize the alkalized industrial wastewaters.

Full text not available from this repository.

More information

Published date: February 2000
Keywords: bittern, magnesium, lime, coagulation, flocculation, industries, ceramic, pulp and cardboard, dairy, marble tiles, tannery, ready-mix concrete

Identifiers

Local EPrints ID: 74405
URI: http://eprints.soton.ac.uk/id/eprint/74405
ISSN: 0043-1354
PURE UUID: 838ab54a-1baa-4b3f-b16a-6ab8f5da667d

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:46

Export record

Altmetrics

Contributors

Author: G.M. Ayoub
Author: F. Merhebi
Author: A. Acra
Author: M. El-Fadel

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×