Municipal sewage denitrification treatment device and method

Abstract

The municipal sewage denitrification treatment device comprises a reaction tank, the reaction tank is connected with a water inlet pipeline, a water outlet pipeline and a backflow pipeline, and the backflow pipeline is communicated with the water inlet pipeline through a backflow element; a surface aerator is arranged in the reaction tank; the reaction tank comprises a reaction area and a settling area, the settling area is located at the bottom of the reaction area, the reaction area is provided with a deflector, the deflector is provided with a plurality of baffling channels, the side walls of the baffling channels are rough surfaces, and microorganisms in the reaction tank can be attached to the side walls of the baffling channels. The invention further provides a treatment method adopting the municipal sewage denitrification treatment device, nitrosation is started by means of original microorganisms in the wastewater, the microorganisms are attached to the baffling channels to grow, anaerobic ammonia oxidation is started by inoculating anaerobic ammonia oxidation sludge, autotrophic biological denitrification of the municipal sewage is achieved, and material consumption of denitrification treatment is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a municipal sewage denitrification treatment device and method. Background technique [0002] Compared with the traditional nitrogen removal technology, the partial nitrification-ANAMMOX process can reduce the oxygen demand by 60%, save the organic carbon by 100%, reduce the remaining sludge by 80%, and has a higher nitrogen removal efficiency, Widespread concern. The so-called partial nitrification-anammox process refers to the process in which ammonia oxidizing bacteria convert about half of the ammonia in wastewater into nitrite, and the remaining ammonia and nitrite are converted into nitrogen by anammox bacteria. At present, partial nitritation-anammox has been applied to the denitrification treatment of high ammonia industrial wastewater, such as landfill leachate, sludge digestate, etc. Therefore, after the treatment of this kind of wastewater, the ammonia nit...

AI Technical Summary

Problems solved by technology

At present, researchers have also developed a variety of inhibitory methods for nitrifying bacteria under mainstream conditions (pharmaceuticals, low-oxygen control, etc.), but the material consumption is large and the control process is complicated, and the so-called low-oxygen intermittent aeration and other easy-to-operate strategies still exist. Many unstable phenomena

Images