Globally,the oil majors are establishing their future environmental and social responsibility benchmarks as restructuring to their newer outlook.These concerns call for better control of emissions & releases from their operations and finally handling of decommissioning of oil / gas installations etc.The national oil company ONGC,currently produces about 0.12 million m3 per day of water from its various on land & offshore oil assets.Oil field waters contain highly toxic organic and inorganic substances,which have deleterious effect on local flora and fauna.The various conventional methods currently in vogue are less satisfactory as being less environment friendly,less cost effective and more energy demanding.The petroleum industry has made enormous strides in improving its environmental operations.
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