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.
Wastewater treatment practices have been significantly improved since the introduction of novel microbial treatment technologies. The Sequencing Batch Reactor (SBR) system for ammonia removal over nitrite (SHARON) process by intermittent aeration as well as the key parameters of SHARON, were studied in this paper, which includes pH, temperature, dissolved oxygen (DO) and sludge age, to obtain the...
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...
The raw water was diluted in four levels of 20%, 40%, 60%, 80% in the bio-membrane initiating process. When the raw water concentration was invariable , and hydraulic retention time, dissolved oxygen, pH and water temperature were 3 h, 3.5 mg/L, 7.05 ~ 8.23, 17.4 ~ 30.6°C respectively. Results showed removal rates of combined packing to COD, BOD5, NH3-N and TP were about 76.3%, 78.4%, 74.9% and 58...
In order to optimize the population structure of nitrifying bacteria, several factors were analyzed in this paper to make partial nitrification start up. Lab-scale SBR was employed to treat the domestic wastewater of low COD/TN ratio. Steady partial nitrification can be achieved through real-time control in 32 cycles with dissolved oxygen (DO) 1.8plusmn0.1 mg/L and SRT 7 days at 30degC. The nitrite...
Partial nitrification to nitrite was reported to be technically feasible and economically favorable, which can be obtained by selectively inhibiting nitrite oxidizing microorganisms through many ways. This paper studied the effect of low DO(dissolved oxygen) concentration and the variation modes of DO on nitritation in SBR The results showed that low DO concentration throughout the SBR cycle led to...
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.