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Operating Conditions Optimization on Indonesian ＂Batik＂ Dyes Wastewater Treatment by Fenton Oxidation and Separation Using Ultrafiltration Membrane

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Journal of Environmental Science and Engineering(A) 2012年第5期1卷 672-682页

作者： nita kusumawati Asri Wiiiastuti Erina Rahmadyanti Chemistry Department Mathematics and Science Faculty Surabaya State University Surabaya 60231 Indonesia Special Education School Department Science Education Faculty Surabaya State University Surabaya 60231 Indonesia Civil Engineering Departement Engineering Faculty Surabaya State University Surabaya 60231 Indonesia

Broadly speaking, this study aims to develop ＂batik＂ dyes wastewater treatment technologies by hybrid process that combines Fenton oxidation and separation using ultrafiltration membranes. Specifically, the purpose of this study was to determine the effect of membrane characteristics, feed solution pH, operating pressure of ＂Dead-end＂ membrane reactor, and the frequency of membranes which uses on the percentage of COD reduction in ＂batik＂ wastewater. In this study, the filtrate from wastewater pre-treatment with Fenton oxidation, both without and with addition of activated carbon, is passed to the ultrafiltration （UF） separation system. Fenton oxidation process was carried out at optimum conditions, i.e. at pH 3, temperature 50 ℃, and the addition FeSO4·7H2O and H2O2 at 747-830 mg/L and 1,168-1,460 mg/L, respectively. The optimum reduction percentage of COD can be achieved when the membranes used for separation has a pore size of 0.01 to 0.015 lam, feed solution pH 2, operating pressure 1 atm and frequency of membranes uses I x. To determine the fouling potential on ultrafiltration membranes that are used, flux measurements were performed 3 times for each membrane. These stages can see that the flux decline reached 22.5% when the effluent filtered directly to the membrane; 17.3% when performed pre-treatment prior to separation processes using membranes and 10% when combined pre-treatment process, use of activated carbon and the separation using ultrafiltration membranes.

关键词： Hybrid process fenton oxidation ultrafiltration membranes flux fouling.

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