Greywater treatment and reuse trends using membrane bioreactor technology

In the present state of the economy, the water shortage has been emerged as a significant problem. The world is dealing with a lot of issues because of this. The pace at which freshwater is used has significantly expanded. Wastewater reusing will be the one and only remedy for this challenge. Numerous advanced techniques have been developed to clean wastewater for both potable and non-potable uses. The current study was done to reuse the waste (grey) water from the main canteen at Adamas University and use it for drinkable purposes utilizing membrane bioreactor (MBR) technology. Total wastewater generated daily from the university canteen is 12,200 litre. This was recorded and physicochemical characteristics like BOD5, DO, COD, TDS, oil and grease, MPN, TOC, and others were analyzed. With various sludge doses, a bio-reactor setup was created in which the most organic matter was breaking down. Many microorganisms including Amoeba sp., Daphnia sp., Brachionus sp., Tetrads and Rotifers were found in raw grey water and sludge respectively, according to observations made using an electron microscope. To ascertain the efficacy of sludge, studies of sludge using FTIR and FESEM were performed. Low-cost clay alumina based 19 channels configuration with TiO2-coated UF ceramic membranes developed at CSIR-CGCRI was applied in this study. Greywater that has been treated had a pH of 7.9. Oil and grease (99%); turbidity (99%); COD (99%); suspended solids (99%); BOD (99%); E. coli, total coliform; the efficacy of removal for all of the factors with the ultrafiltration membrane was as follows. Excellent results have been obtained from the permeate sample, which states that all the values of physicochemical parameters have successfully been reduced and when compared with the raw samples, clearly indicates that the treated water may be used for non-potable purposes and is within WHO-permissible limits.