DYESTUFF WASTEWATER TREATMENT USING CHEMICAL OXIDATION, PHYSICAL ADSORPTION AND FIXED BED BIOFILM PROCESS
作者： Dae-Hee Ahn , Won-Seok Chang , Tai-Il Yoon
DOI: 10.1016/S0032-9592(98)00111-3
关键词:
摘要: Fenton’s oxidation and activated carbon adsorption were examined as pretreatment processes for dyestuff wastewater having high salinity, colour, non-biodegradable organic concentrations. In this work, each stream produced by individual production was classified streams R1, R2, R3. The a value of BOD5/COD lower than 0.4 pretreated or to increase the ratio which indicates biodegradability. For with one 0.4, optimal reaction pH 3.0 minimum dosing concentration (mg l−1) H2O2:FeSO4·7H2O 700:3500. Stream R3, consisted mainly methanol efficiently treated adsorption. also increased 0.432 0.31 from 0.06 in adsorption, respectively. A biological treatment system using fixed bed reactor investigated enhance efficiency at various hydraulic retention times, conditions reagent salt concentrations wastewater. addition, post-treatment present total process As influent COD salinity increased, effluent SS consequently increased. However, microorganisms became adapted changed condition, quickly recovered under since well toxic conditions. consisting chemical oxidation, biofilm can be useful treat concentration.
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