Improved type a 2 /o biofilm synchronous decarbonization and nitrogen phosphorus removal reactor and its operation method

Abstract

The invention discloses an improved A2 / O biological membrane reactor capable of synchronously removing carbon, nitrogen and phosphorus and an operation method thereof. The reactor comprises an anoxic area, an anaerobic area, an aerobic area and a precipitation area which are communicated with one another in sequence, wherein the raw water is divided into two raw water paths I and II which enter the anoxic area and the anaerobic area respectively; part of water discharged from the upper part of the precipitation area returns to the anoxic area; the sludge at the bottom of the precipitation area returns to the bottom of the anaerobic area; the anoxic area is filled with film formation fillers and spherical suspension fillers; the anaerobic area is filled with the film formation fillers; the aerobic area is filled with the film formation fillers and the spherical suspension fillers; the clear water at the upper part of the precipitation area flows through the reactor and is finally discharged by a water outlet pipe; the sludge at the bottom of the precipitation area is discharged by a sludge discharging pipe. By virtue of the reactor and the operation method thereof, the problems of sludge age contradiction, competition of different strains on substrate carbon source, the mixture of the strains, suppression on the activity of the strains and the like in the conventional A2 / O process can be effectively solved; the organic matters and nitrogen and phosphorus in the sewage can be synchronously and efficiently removed.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to the improved A 2 / O biofilm synchronous decarbonization reactor for nitrogen and phosphorus removal and its operation method. Background technique [0002] With my country's increasingly stringent requirements for nitrogen and phosphorus removal and the generalization of low-carbon sources of sewage, most sewage treatment plants are faced with the problem that the nitrogen and phosphorus in the effluent cannot meet the standards and have to be upgraded. Although there are many technologies for denitrification and dephosphorization of sewage, the main role is still conventional A 2 / O process (including traditional A 2 / O process and inversion A 2 / O process), the world passes the conventional A 2 / O process to complete the denitrification and dephosphorization of sewage accounted for more than 80%. In my country's biological nitrogen and phosphorus...

AI Technical Summary

Problems solved by technology

[0019] The object of the invention is to provide improved A 2 / O Biofilm Synchronous Decarbonization and Nitrogen and Phosphorus Reactor, Overcoming the Existing Conventional A 2 Defects in the / O process, to solve the problem of sludge age contradiction, the competition between nitrifying bacteria and denitrifying bacteria and other bacteria for substrate carbon sources, the problem that the functions of each reaction zone cannot be fully exerted due to the mixing of bacteria, mixed bacteria Continuous circulation in each reaction zone leads to the problem of inhibiting the activity of bacteria

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