Dr. Ananth S Kodavasal的动态

THE SBR CONUNDRUM - AVOID LIKE THE PLAGUE - EPISODE # 5 & 6 (FIFTH & SIXTH INSTALLMENT) I do have a big heart. In order not to keep you on the edge of your seats for too long and far too many times, I have combined two other defects, deficiencies, shortcomings, flaws etc., etc., which lead to failure of SBR STPs as designed in India for Decentralised Urban STPs (DUS). Some well known high end Builders and Developers mostly based out of Bangalore have been severely afflicted by this disease of SBRitis : Never learnt from their past mistakes. Commissioning ignorant Architects and their Plumbing consultants to do STP designs for their projects. True to form - commission agents all. FATAL FLAW # 5 : The Heart of an SBR - The Decant stage suffers from rudimentary decant mechanism - A simple automatic decant valve cannot be a substitute for a long weir mechanised decanter. Automation solves nothing here. Sludge and solids get pulled up, enter the decant tank and later choke the tertiary filters. We have inspected scores of SBR STPs where the filters are simply bypassed on account of frequent choking. DEFICIENCY # 6 : Excess sludge handling is a universally acknowledge issue in SBR STPs, more so in the DUS. The simple sketch attached should open the eyes of even a lay person. I can go on and on and on about various other drawbacks of SBR when applied on small scale. But a good half a dozen serious flaws should suffice to serve as an Obituary for SBR STPs.