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In the paper, the integrated wastewater reclamation system of the combined biological aerated filter (BAF) and dynamic membrane (DM) technology was feasible and effective for dyeing and printing wastewater treatment. The experiment was carried out continuously under of the optimal condition of hydraulic retention time (HRT) of 1.0 h, pH of 7.0-8.5, temperature of 25-30°C and an air/water volume flow...
In this work, the advanced treatment of the biologically treated wastewater of a textile plant using combination of ozonation and two-stage biological aerated filter (BAF) was studied. Comparing different ozone dosing methods, it was found that the integrated device including ozonation and BAF, allowed a higher COD (chemical oxygen demand) and color reduction. Comparing different treatment processes,...
The treatment of chemical effluent is very complex with respect to its characteristics. To treat this effluent, different processes like biological, chemical and physiochemical can be applied based on its characteristics. Attempt was made to reduce COD and TSS. To obtain the optimum removal of COD and TSS, different combinations of coagulant and polyelectrolyte were applied at the laboratory scale...
The effects of UV-Fenton preoxidation on the biodegradability of several phenolic wastewaters were investigated based on the ratio of BOD5/COD. The results showed that the BOD5/COD ratios of phenol, hydroquinone, 2-chlorophenol and coal-gas phenolic wastewater were less than 0.30, except for phenol in moderate concentration of 300mg/L, which mean that the phenolic wastewaters were difficultly biodegradable...
Membrane-making wastewater contains DMF, with high COD, toxicity and non-biodegradability. In this work, aerobic Fe-C micro-electrolysis and three-dimensional electrodes technology were applied for the pretreatment aiming to improve the biodegradability of the wastewater. It was found that the optional pretreatment conditions were pH 3 for Fe-C micro-electrolysis and pH 5 for the three-dimensional...
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