The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The present work consisted in the study of Titania/Zeolite catalyzed ozonation for nitrobenzene removal. Catalytic activity of the supported TiO2 is strongly influenced by the heat treatment temperature. Titania/Zeolite calcined at 600??C showed the best activity. An approximate increase of 21% in removal rate was achieved for catalytic ozonation compared with single ozonation. Kinetic study of dissolved...
The study on further treatment of coal coking wastewater by ultrasound wave, Fenton's reagent and coagulation was carried out in this paper at the first time, Furthermore, this paper discussed the optimum cooperative reaction condition of their combined application and the influence trend of COD by the single factor. The results showed that the removal rates of COD had optimum values with the variation...
Shortcut nitrification was reported to be technically feasible and economically favourable, especially when sewages with high ammonium concentrations or low C/N ratios are treated. Nitritation can be obtained by selectively inhibiting nitrite oxidizers through appropriate regulation of the systempsilas pH, DO, temperature, and sludge retention time, and so on. Nitrification tests were performed in...
In order to obtain a more efficient method of manganese( II) removal, jar test was used to study the effect of potassium manganese(K2MnO4) pre-oxidation on aluminum chloride (AlCl3) coagulation to remove manganese(II). It was investigated that the effect of the dosage ofK2MnO4, dosing time, sedimentation time and common ions on manganese(II) removal. The results showed that, when K2MnO4 was added...
Landfill leachate pre-treatment was studied by Fenton reagent composed of FeSO4ldr7H2O and H2O2. The different effect factors of CODcr were studied, such as pH value, Fenton reagent under different dosages, the molar ratio of ferrous ion to H2O2 and reaction time. The results indicated: when the pH value was 3.0, the dosages of H2O2 was 0.25 mol, FeSO4ldr7H2O and H2O2 in the molar proportion was 10...
Using synthetic wastewater and sludge dewatering effluent as influent, respectively, wastewater with low C/N ratio treated by partial nitrification/anammox process was investigated. The results showed that half partial nitrification can be accomplished in CSTR at DO of 0.5-1.0 mg/L and HRT of 24 h, the average effluent ratio of NO2--N/NH4+-N maintained at about 1.25 and the average effluent ratio...
A kinds of Methamidophos wastewater was pretreated by acidification and Fenton oxidation process, and the results demonstrated that, at pH value of 2.0 and reaction temperature 100degC, a removal efficiency of TOC and sulfide of was reached to 18.33% and 90.7% respectively, at pH value of 4.0, n(H2O2):n (Fe2+) of 30 and 3.0% of H2O2, that of TOC was reached to about 24.3%, while at addition of 20%...
Ozone is a strong oxidant that can selectively oxidize the color generating chromophoric parts of the organic compounds in waste waters. In this paper, the removal of color from waste waters produced in municipality, livestock farm, dye and pigment industries are investigated by mechanical diffuser (MD), dissolved ozone floatation (DOF), pressurized ozone oxidation (PO2) and combination of DOF-P02...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.