Continuous removal of chromium from tannery wastewater using activated sludge process—Determination of kinetic parameters

Abstract

32-36The activated sludge has been acclimatized with chromium (VI) ions from 5 mg/L to 20 mg/L. It is observed that the chromium removal percentage, COD removal and mixed liquor suspended solid (MLSS) decrease with the increase in dilution rate. Maximum food to microorganisms ratio (F/M) is found to be 0.19. When initial metal ion concentration increases from 5 mg/L to 20 mg/L, the chromium removal decreases from 95.58% to 63.85% (dilution rate 0.041h-1)