Author(s)

Ruoyu Zhou, Wenqi Zhang

College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China.

In this paper, Fenton process was determined to be an effective technique to treat the refractory Nonylphenol ethoxylates (NPEOs) wastewater. The COD removal efficien-cies above 89% were obtained when the initial COD concentration was 12000mg/L. However, A large number of ferric sludge (SS=8.724g/L) would be produced after the Fenton oxidation of the wastewater and must be disposed appropriately. A novel process for Fenton sludge reused by low-cost ferrous sulfide (FeS) was also investi-gated. Experimental results show that the Fenton sludge could be reduced to produce a certain amount of Fe²⁺ in the acidic mixed liquor by ferrous sulfide. This mixed liquor from Fenton sludge could be used as the new catalyst in the Fenton process and was also highly effective for the NPEOs wastewater treatment. The residual ferrous sulfide from the mixed liquor could be used for the next batch of the reaction

Fenton Process, Iron-Containing Sludge, Ferrous Sulfide, Sludge Reused, Nonylphenol Ethoxylates

Zhou, R. and Zhang, W. (2017) Reuse of Ferric Sludge by Ferrous Sulfide in the Fenton Process for Nonylphenol Ethoxylates Wastewater Treatment. Computational Water, Energy, and Environmental Engineering, 6, 89-96. doi: 10.4236/cweee.2017.61007.