Oil & Grease Removal
These are simple tanks with inlet & outlet baffle arrangement. The tanks are designed to give enough residence time to enable removal of free oil & grease & other floating matter, scum etc. A detention time between 10 min to 60 min is provided in which time the oil & grease rises up & is skimmed off….
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Metal Removal – Sulfex Process
The development of Sulfex process eliminates both the above deficiencies and has been in commercial use for several years. This precipitation technique involves an exchange of sulphide ion between ferrous sulphide and the heavy metal ion present in the effluent as pollutant…
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