Affiliation:
1. East China Jiaotong University
Abstract
This paper compares the inhibitory effect of high CaCl2and MgCl2content on anaerobic microorganism based on kinetics model. Salt inhibition kinetics experiments were performed at granular sludge and activated sludge in order to investigate salt inhibition effects on kinetic constants. Half-velocity constantvalues considerably increased when CaCl2or MgCl2concentration increased from 0 to 35g/L for granular sludge and activated sludge. Salt inhibition biokinetic coefficients (Kρ) were obtained by using Ghose and Tyagi model. For granular sludge,Kρof CaCl2was found to be 130.3 g/L, andKρof MgCl2was found to be 86 g/L. For activated sludge,Kρof CaCl2was found to be 92.8 g/L, andKρof MgCl2was found to be 77.6 g/L. Results showed that the inhibitory CaCl2limit was higher than the inhibitory MgCl2limit for anaerobic microorganisms.
Publisher
Trans Tech Publications, Ltd.
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