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Oxidation of fabric dyeing wastewater was investigated in supercritical water with CuSO4/FeSO4 as catalyst. The effects of various operating parameters like temperature, pressure, hydrogen peroxide concentration and catalyst concentration on the removal of color and COD from wastewater were investigated. The percent removals of color and COD at 450°C, 28MPa using 120% hydrogen peroxide dosage and...
Monosodium glutamate (MSG) wastewater is a very refractory case of high strength organic wastewater. To investigate the effect of operating variables on treatment of MSG wastewater, a laboratory scale study was conducted. The treatment of MSG wastewater was studied in a continuous flow anaerobic fluidized blanket (UASB) reactor. The effect of operating variables such as organic volumetric load rate...
Transpiring wall reactor is a promising engineering solution to corrosion and salt precipitation for the technology of supercritical water oxidation. Characteristics of flow conditions and species concentrations in the reactor and around the transpiring wall are hardly accessible to measurements. So a computational fluid dynamic model of the transpiring wall reactor was developed. The influence of...
The effectiveness of coagulation/flocculation/ sedimentation (CFS), carbon adsorption, and CFS+carbon adsorption for advanced treatment of a biologically treated coking plant effluent was studied. The CFS treatment was cost effective for producing an effluent reusable as cooling water (CODCr<;100 mg/L). Carbon adsorption accomplished the same recycling treatment at a higher cost. Both carbon type...
The high-alkalinity wastewater generated from aluminum factory is treated by ultrafiltration-electrodialysis integrated technology. Firstly, an ultrafiltration device is used for pretreatment of alkaline wastewater to make permeation solution meet the influent requirement of electrodialyzer and enrich the aluminum therein; secondly, the ultrafiltration permeation solution is adjusted by electrodialysis...
The pilot plant study comprised the sequencing batch reactor (SBR) operational mode of a contact oxidation filtration separation integrated bioreactor (CFBR) for treating municipal wastewater. The CFBR was made up of an upper biofilm reactor and a lower gravitational filtration bed. Polyacrylonitrile balls (50mm diameter, 237 m2/m3 specific surface, 90% porosity, and 50.2% packing rate) were filled...
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