Tannery effluent was collected from a leather processing unit located at Bantala leather complex, Kolkata and characterized in detail. The effluent showed typical value of COD 6500 mg/L, BOD5 1000 mg/L and Cr+6 content of 70 mg/L. Batch mode bioreactor studies were done with tannery effluent and an effective bacterial consortium was identified and selected depending on the removal of COD, BOD5 and hexavalent chromium. Microorganisms responsible for biodegradation were preliminary identified as Bacillus sp., E. coli (by Gram staining method, lactose fermentation test, EMB agar test). Bentonite clay was used to prepare ceramic ultrafiltration membrane on clay alumina based tubular support.
Last Updated on June 4, 2020
Dear Respected Gentleman,
I heard that you have developed a ceramic membrane to filter hard water. I want to know about the same to treat water in my Village. The people are suffering of hard water TDS is around 1800ppm. Kindly suggest a solution and material or filters to control TDS well with in 300 to 400 ppm.
Dear Respected Gentleman,
I heard that you have developed a ceramic membrane to filter hard water. I want to know about the same to treat water in my Village. The people are suffering of hard water TDS is around 1800ppm. Kindly suggest a solution and material or filters to control TDS well with in 300 to 400 ppm.
The Ceramic Membrane developed by CSIR-CGCRI is useful for elimination of suspended matters including bacteria from the water whereas the Dissolved solids are retained. Therefore, the removal of TDS is not done though these membranes. The level of TDS given in your message is 1800 ppm and a Brackish water Reverse osmosis is enough to reduce the TDS to 300-400 ppm.