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A mathematical model of the PAC-UF membrane flux through a number of factors and quantitative characterization, based on Darcy's law, has been derived. Meanwhile, PAC-UF combined process was applied to treat Gan River micro-polluted raw water. Validity of the mathematical model is verified with the experiment. Furthermore, for different operation pressure and running time, the result shows that the...
In this study, we have investigated the effect of pollutants removal of a vertical multilevel soil infiltration (VMSI) system on municipal wastewater treatment. The VMSI was of 30cm*20cm*50cm column, in which combined stuffing consisted of soil, quartz sand, active carbon and scrap irons were packed. As a result, VMSI system exhibited excellent removal efficiency with 91.7% of COD, 98.4% of NH4+--N,...
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...
In order to study the effect of fillers with adsorption and drying on rubbish degradation, leachate production and water quality of leachate, five cylinder reactors for landfill disposal were built to simulate the operation of landfill, one reactor was used as contrast reactor, no filler added in it. Saw powder, activated carbon, zleolite and newspaper were added into another four reactors. In the...
According to the characteristics of contaminated surface water, a stain of Micrococcus sp. (Micrococcus sp. N3-9P) that could remove CODCr efficiently was picked out from the slowly flowing oil-polluted riverbed sludge in Liaohe Oil Field, and then it was immobilized by chemical embedding technology. Through the conditional tests of immobilizing parameters, an improved co-immobilization technique...
Adsorption test for phenol-containing wastewater from a coking plant was carried out using Specially-made activated carbon. The reaction mechanism and influencing factors, such as the dosage of Specially-made activated carbon, pH, temperature and time on decomposition of phenol for the treatment of phenol-containing wastewater by Specially-made activated carbon were mainly studied. The proper conditions...
The decomposition of high concentration pentachlorophenol (PCP) loaded on granular activated carbon (GAC) was studied by dielectric barrier discharge (DBD) plasma. The effects of discharge voltage, treatment time, gas kinds and flow rate on PCP degradation efficiency were discussed. The results indicated that increasing discharge voltage and treatment time could enhance the degradation efficiency...
Activated carbon (AC) supported titanium dioxide (TiO2 ) photocatalyst (TiO2/AC) was prepared by two-step sol-gel process. Crystal structure, and surface morphology of TiO2/AC were characterized by X-ray diffraction (XRD), N2 adsorption-desorption isotherm measurements (BET) and scanning electron microscopy (SEM), respectively. The results show that average crystal size of TiO2 in 11% TiO2/AC catalyst...
Platinum catalysts on activated carbon (AC) were developed and examined for the removal of organic pollutants from wastewater. The Pt/AC2 catalysts were more active than the Pt/ACl and Pt/AC3. With the analysis of BET, XPS and SEM, it was found that the quantities of oxygen containing groups on the AC surface increased after AC supports were pre-treated by oxidant, and farther the dispersion of Pt...
The feasibility of powdered activated carbon (PAC) as an adsorbent to eliminate the perfluorooctanoic acid (PFOA) in the water for reuse has been studied. PAC exhibits a high affinity to adsorb PFOA on its surface. More than 95% of PFOA can be adsorbed onto PAC surface at the first hour. For common reuse water, the most optical PAC concentration was 0.125 g/L. As illustrated by IR spectra, PAC is...
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