Biochemical denitrification and dephosphorization treatment device

Abstract

The invention discloses a biochemical denitrification and dephosphorization treatment device. The device comprises a catalytic oxidation tank. The catalytic oxidation tank is filled with ozone catalytic particles in the form of a fixed bed. The ozone catalytic particles are composed of, according to parts by weight, active alumina particles, copper oxide, titanium dioxide, polyethylene glycol andpolyvinyl alcohol. 60-70 parts of high-density polyethylene, 10-15 parts of polypropylene resin, 6-8 parts of low-density polyethylene, 2-3 parts of dichloromethane, 1-2 parts of diethylhydrazine sulfate, 0.5-1 part of N,N'-ethylene bisstearamide, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of magnetic powder and 0.5-1 part pentaerythritol stearate are placed in a mixer, stirred at a high speed, slowly heated to 120 DEGC, stirred at a low speed and cooled to 40 DEG C, and then 5-10 parts of bamboo charcoal powder, 4-6 parts of wood powderand 5-8 parts of lignin are added and evenly stirred until room temperature. The biochemical denitrification and dephosphorization treatment device achieves COD removal, decolorization, deodorizationand degradation of toxic pollutants for wastewater in a process of catalytic oxidation treatment of coal chemical wastewater.

Description

technical field [0001] The invention relates to a biochemical denitrification and phosphorus removal treatment device, which belongs to the technical field of sewage denitrification and phosphorus removal. Background technique [0002] Most coal gasification plants in China adopt the Lurgi gas production process. The waste water pollutants produced by this process have a high concentration and complex organic components, mainly including phenolic compounds, polycyclic aromatic compounds, and heterocyclic compounds containing nitrogen, oxygen, and sulfur. Compounds and fatty compounds are highly toxic and difficult to biodegrade. If the coal-to-gas wastewater is not properly treated and discharged beyond the standard, it will cause serious pollution to the ecological environment. Therefore, how to effectively treat the coal-to-gas wastewater and achieve wastewater discharge standards has become an international problem. [0003] At present, high concentrations of ammonia nit...

AI Technical Summary

Problems solved by technology

At present, most of the research on coal gasification wastewater treatment technology stays in the small-scale experimental stage. Most scholars are only conducting research on the application of a single technology, and there are few studies on the coupling process of physicochemical treatment and biochemical treatment.

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