By Gowthaman Desingh, Director – Technology, Transwater Systems Conventional wastewater treatment consists of a combination of physical, chemical, and biological processes and operations to remove solids, organic matter and, sometimes, nutrients from wastewater. General terms used to describe different degrees of treatment, in order of increasing treatment level, are preliminary, primary, secondary, and tertiary and/or advanced wastewater treatment. In Urban cities, majority of the Sewage/Waste Water treatment plant does the primary and secondary treatment addressing the reduction of BOD, COD, TSS, Ammonical Nitrogen, etc to meet the disposal norms but…
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