Cost-Effective Treatment Technology for Small Size Sewage Treatment Plants in India

Abstract

The present paper discusses cost effective wastewater treatment technologies for small size Sewage Treatment Plants (STPs) in India. Wastewater treatment technologies are gaining importance for an attention of policy-makers and industries for meeting the required pollution control guidelines as laid down by the regulators of the countries and to make the wastewater fit for desired usages resulting in conservation of water resources. This article provides an analysis of technologies commonly used in this sector in terms of cost assessment and footprint requirment for selecting its suitablity in Indian climate. Various aearobic treatment technolgies viz. Moving bed biofilm reactor (MBBR), Membrane bioreactor (MBR), Sequenencingl batch Reactor (SBR), Extended Aerarion (EA), Submerged aerobic fixed film (SAFF), suitable for treating wastewater have been considered for comparative analysis which includes operation and maintenance (O & M) cost also. The study suggests SBR as most cost-effective treatment technolgy and MBR most expensive among various avilable treatment options.