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.
Molasses alcohol wastewater was treated by the micro-aerobic hydrolysis and acidification process as a pretreatment process. The COD removal rate increased quickly at the beginning of the reaction and then very slowly. The COD removal rate and the acidification rate reached the maximum at the aeration rate of 20mL/min. The acidification rates at different pH values increased firstly with the increasing...
The excess sludge of wastewater biological treatment, as refractory compounds, only 25-40% of which could be biodegraded. While much research work has be done about the application of sludge, there were concerns about the application of biosolids due to risks associated with disease, odor, nutrients and the presence of toxic metals. Recently, many studies have focused on sludge reduction technology...
An expanded granular sludge bed packed with porous sponge was started to treat wastewater contaminated by sulfide, nitrate, nitrite and organic carbon compounds. In inflow wastewater, potassium nitrate and sodium nitrite acted as electron acceptors, sodium sulfide acted as electron donor and glucose acted as organic carbon source. In the anoxic reactor, autotrophic denitrification happened together...
The loading photocatalyst of TiO2/hollow pearls was prepared by sol-gel method and hollow pearls as carrier. The results indicate that the approach of TiO2 loading on hollow pearls is viable. The scanning electron microscope (SEM) images show that the coating layer is symmetrical on the hollow pearls; the UV-vis DRS shows that TiO2/hollow pearls has strong absorption in the UV range, and the absorption...
The effect of nitrite loading rate, organic carbon category and loading rate was investigated on simultaneous removal of organic carbon, sulfide, nitrate and nitrite by the mixotrophic denitrification and desulfurization process. This simultaneous respiratory process could be explained in terms of the microbial diversity. The 50 mgC/(L·d) of glucose and 25 mgC/(L·d) of acetate sodium were suitable...
The Catalytic Wet Oxidation (CWO) method was investigated to treat wastewater from chemical container cleaning process, which contains various and high-strength pollutants. A heterogeneous catalyst was studied with Cu2+ as the active component and activated carbon as the supporter. The effects of Cu2+ concentration, calcination temperature and calcination time on the Cu-based catalyst performance...
Aiming at resolving problems in biological nitrogen and phosphorous removal process like conflict between nitrogen removal and phosphorous removal and total phosphorous in the effluent due to unsatisfied solid-fluid separation, two-stage sequencing batch membrane bioreactor (TSBMBR) was presented in treating municipal wastewater. Influence of two-stage sequencing batch operation mode on pollutants...
Oyster shells wastes resulting from the mariculture presents an imperative disposal problem in the coastal region. In this study, the nitrification efficiency on an aerated biofilter with raw oyster shells (ROS) as the sole buffer agent and the biomass carrier was evaluated. The capability of alkalinity supplied by ROS was found to be about 1050 mg/L, enabling a loading ammonia concentration up to...
The performance of a pilot-scale vermifiltration treatment process for municipal wastewater was investigated at hydraulic loadings of 2.4, 4.8, 5.6, 6.7m3/m2.d. The results indicated that the removal efficiencies of CODcr, BOD5, SS and NH4-N were in the range of 47.26%~57.55%, 54.78%~59.29%, 62.06%~77.90%, and 21.01%~52.58%, respectively. The average sludge reductions were from 38.2% to 44.7%. The...
Split-feed anaerobic baffled reactor (SABR) is a novel reactor based on the design concept of anaerobic baffled reactor (ABR). The tracer test of hydrodynamic characteristics of SABR was studied and the impact of characteristic section on hydrodynamic characteristics of SABR was analyzed. Residence time distribution (RTD) studies with deionized water at the same hydraulic residence time (HRT) of 5...
The phosphate removal potential of steel slag modified by high temperature activation has been investigated. The effects of adsorbent dose, pH, contact time and initial phosphate concentration on the phosphate adsorption by modified steel slag have been studied. Phosphate removal was seen to increase with increasing adsorbent dose, contact time and decreased with increasing initial phosphate, while...
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.