High Efficient Degradation of Oilfield Waste Water Containing Polymers By Metal-tartaric Complex

Abstract

This To provide an efficient catalyst for Fenton oxidation processing to the treatment in waste fracturing fluid containing hydroxypropyl guar gum under high pH value, a series of metal-tartaric acid complex was prepared for catalyzing the Fenton oxidation. The results show that Fe(III)L complex demonstrate high catalytic performance for degradation of polymer in a wide pH range from 8.0 to 12.0. The viscosity of hydroxypropyl guar gum can be reduced effectively to 2.3 after adding 10.0% H2O2 (mass ratio to hydroxypropyl guar gum) and using 10.0% Fe(III)L (mass ratio to H2O2) as catalysts. The COD value of the treated hydroxypropyl guar gum solution can be decreased to 107 mg/L from 8680 mg/L. The proposed mechanism of the activation of H2O2 by the complex was studied by UV spectrum.