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An overview of oil–water separation using gas flotation systems

Jayaprakash Saththasivam, Kavithaa Loganathan, Sarper Sarp Orcid Logo

Chemosphere, Volume: 144, Pages: 671 - 680

Swansea University Author: Sarper Sarp Orcid Logo

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Abstract

Oil concentration levels in municipal waste water effluent streams are stringently regulated in most parts of the world. Apart from municipal waste, stricter oil/grease discharge limits are also enforced in oil and gas sectors as large volumes of produced water is being discharged to open ocean. One...

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Published in: Chemosphere
ISSN: 0045-6535
Published: 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa39647
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Abstract: Oil concentration levels in municipal waste water effluent streams are stringently regulated in most parts of the world. Apart from municipal waste, stricter oil/grease discharge limits are also enforced in oil and gas sectors as large volumes of produced water is being discharged to open ocean. One of the feasible, practical and established methods to remove oil substances from waste water sources is by gas flotation. In this overview, gas flotation technologies, namely dissolved and induced flotation systems, are discussed. Physico-chemical interaction between oil–water-gas during flotation is also summarized. In addition to a brief review on design advancements in flotation systems, enhancement of flotation efficiency by using pre-treatment methods, particularly coagulation-flocculation, is also presented.
Keywords: Gas flotation, Oil–water separation, Oil–water–gas interactions, Air flotation, Dissolved gas flotation, Induced gas flotation
College: College of Engineering
Start Page: 671
End Page: 680