Integrated denitrification and decarbonization aeration biological filtration pool

Abstract

The present invention discloses an integrated denitrification and decarbonization aeration biological filtration pool, wherein an anaerobic carrier and an aerobic carrier respectively comprise a hollow short pipe, a first concentric ring and a second concentric ring, the first concentric ring and the second concentric ring are sequentially and concentrically arranged at the outer side of the hollow short pipe, an aerobic pool is vertically provided with an aeration cylinder embedded into the center positions of an upper sieve plate and a lower sieve plate, an aeration head is positioned at thebottom portion of the aeration cylinder, an oxygen pipe for oxygen transmission is positioned in the aeration cylinder and is connected to the aeration head, an aerobic biological filler is positioned between the side wall of the aerobic pool and the aeration cylinder, and a carrier comprises, by weight, high-density polyethylene, slaked lime, Dow powder active carbon, light calcium carbonate, maleic anhydride, dicumyl peroxide, gelatin, chitin, ferroferric oxide magnetic powder and manganese-zinc ferrite. According to the present invention, with the integrated denitrification and decarbonization aeration biological filtration pool, the high BOD5 / TN ratio can be maintained, the smooth denitrification nitrogen removal performing can be ensured, and the TN removal rate can reach 80.6%.

Description

technical field [0001] The invention relates to an integrated biological aeration filter for denitrification and decarbonization, which belongs to the technical field of sewage treatment. Background technique [0002] At present, the traditional nitrification-denitrification biological denitrification (A / O) process is mostly used in China for denitrification treatment. Generally, it is removed through three processes of ammonification, nitrification and denitrification. Among them, ammonification is carried out by microorganisms. It is the process of synthesizing macromolecular organic matter into ammonia nitrogen. Nitrification is the process in which nitrifying bacteria oxidize ammonia nitrogen into nitrate under aerobic conditions. This process provides a substrate for denitrification; denitrification is the use of nitrate by microorganisms as electrons. Acceptor, the process of reducing nitrate to gaseous nitrogen removal system using organic matter as a carbon source. ...

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Problems solved by technology

[0004] (1) The denitrification process needs to consume organic carbon sources, but at present, the concentration of organic carbon in many wastewaters is low, which cannot meet the requirements of denitrification, and the addition of carbon sources increases operating costs;

[0005] (2) The traditional denitrification process generally requires nitrifying liquid and sludge backflow, so the required hydraulic retention time is longer, resulting in higher infrastructure investment and operating costs;

[0006] (3) The nitrification process and denitrification process in the traditional denitrification process are opposed to each other. The nitrification process is completed by autotrophic aerobic bacteria, while the denitrification is completed by heteroxic anaerobic bacteria. The two processes are opposite and the microbial population generation cycle The difference is very large, and the whole process becomes complicated

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