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Device and method for treating domestic sewage through short-cut nitrification anaerobic ammonia oxidation and endogenous short-cut denitrification anaerobic ammonia oxidation

A technology for nitrifying anaerobic ammonia and domestic sewage, applied in chemical instruments and methods, aerobic and anaerobic process treatment, biological water/sewage treatment, etc., can solve problems such as high operating costs, save energy and internal carbon. source, the effect of reducing demand

Active Publication Date: 2022-01-21
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main challenge faced by urban sewage treatment plants in the treatment of low C / N ratio domestic sewage is to meet the increasingly stringent water quality standards of sewage plants and the high operating costs brought about by aeration energy consumption.

Method used

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  • Device and method for treating domestic sewage through short-cut nitrification anaerobic ammonia oxidation and endogenous short-cut denitrification anaerobic ammonia oxidation
  • Device and method for treating domestic sewage through short-cut nitrification anaerobic ammonia oxidation and endogenous short-cut denitrification anaerobic ammonia oxidation
  • Device and method for treating domestic sewage through short-cut nitrification anaerobic ammonia oxidation and endogenous short-cut denitrification anaerobic ammonia oxidation

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Effect test

Embodiment 1

[0033] The present invention provides such Figure 1-2 The shown short-range nitrification anammox + endogenous short-range denitrification anammox treatment device for domestic sewage includes an integrated AOA-SBR reactor 1, and the bottom of the inner cavity of the integrated AOA-SBR reactor 1 is provided with fillers Bracket 2, filler bracket 2 is fixed with anammox bacteria biofilm sponge filler 3 through nylon string, and one side of integrated AOA-SBR reactor 1 is provided with domestic sewage inlet pool 4, domestic sewage inlet pool 4 It is connected to the integrated AOA-SBR reactor 1 through the water inlet pipe, and the lower end of one side of the integrated AOA-SBR reactor 1 is provided with a water inlet 18, and the water inlet 18 is connected to the water inlet pipe on the domestic sewage inlet pool 4 The water inlet pipe is equipped with a water inlet peristaltic pump 5, and the other side of the integrated AOA-SBR reactor 1 is provided with an outlet water tan...

Embodiment 2

[0036] The test uses artificially prepared simulated domestic sewage as raw water, and the specific water quality is as follows: COD concentration is 160-300mg / L; NH 4 + -N concentration is 60~75mg / L, NO 2 - -N≤1mg / L, NO 3 - -N≤1mg / L, MgSO 4 ·7H 2 O concentration is 90mg / L, CaCl 2 2H 2 O concentration is 14mg / L, PO 4 3- -P concentration is 6~9mg / L, NaHCO 3 The concentration is 900mg / L, and the pH value is 7.0-8.0.

[0037] test system such as figure 1 As shown, the AOA-SBR reactor is made of plexiglass, and the effective volume of the bioreactor is 5L.

[0038] The present invention also provides a method for treating domestic sewage with short-range nitrification anammox + endogenous short-range denitrification anammox, including the following specific methods:

[0039] Step 1. Reactor start-up stage: Inoculate the return sludge of traditional sewage treatment plants in the integrated AOA-SBR reactor 1, so that the sludge concentration in the integrated AOA-SBR r...

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Abstract

The invention discloses a device for treating domestic sewage through short-cut nitrification anaerobic ammonia oxidation and endogenous short-cut denitrification anaerobic ammonia oxidation, and relates to the technical field of biological nitrogen and phosphorus removal. The device comprises an integrated AOA-SBR reactor, and the bottom of the inner cavity of the integrated AOA-SBR reactor is provided with a filler support. According to the invention, the denitrification efficiency of the anaerobic ammonia oxidation process of the system is improved, the stability of PNA reaction is ensured, endogenous denitrification phosphorus removal and deep denitrification of sewage are realized through the rear EPDA, and the whole system has the characteristics of energy conservation, consumption reduction and the like. The invention also discloses a method for treating domestic sewage through short-cut nitrification anaerobic ammonia oxidation and endogenous short-cut denitrification anaerobic ammonia oxidation; the one-carbon dual-purpose is realized through the EPDA in the post-anoxic stage, and the PAOs and anaerobic ammonium oxidation bacteria on the sponge filler utilize the generated nitrite nitrogen to simultaneously complete denitrification phosphorus removal and deep denitrification, so that the internal carbon source is saved, and the requirements on raw water organic carbon sources are reduced, and low-carbon and energy-saving effects are realized.

Description

technical field [0001] The invention relates to the technical field of biological nitrogen and phosphorus removal, in particular to a device and method for treating domestic sewage by short-range nitrification anaerobic ammonium oxidation + endogenous short-range denitrification anaerobic ammonium oxidation. Background technique [0002] The problem of water environment pollution is an important factor affecting the development of society and economy and the improvement of people's living standards. Among them, the problem of eutrophication caused by excessive nitrogen and phosphorus has not only not been solved, but also has an increasingly serious trend. The main challenge faced by urban sewage treatment plants in the treatment of low C / N ratio domestic sewage is to meet the increasingly stringent water quality standards of sewage plants and the high operating costs brought about by aeration energy consumption. Traditional AAO, as the most commonly used treatment process i...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/10C02F101/16C02F101/30
CPCC02F3/308C02F3/302C02F2101/105C02F2101/163C02F2101/166C02F2101/30Y02W10/10
Inventor 马斌冯殿宝委燕王旭
Owner HAINAN UNIVERSITY
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