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A high-standard nitrogen and phosphorus removal system for urban sewage without additional carbon sources

A technology for urban sewage, nitrogen and phosphorus removal, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as unreasonable resource recovery and reduce aeration The effect of high volume demand, simple process flow and low energy consumption

Active Publication Date: 2018-02-06
NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the organic matter will adversely affect the autotrophic anammox bacteria, it is necessary to remove it as much as possible before the sewage enters the anammox reactor, but if it is directly aerobic biological oxidation, it is unreasonable from the perspective of resource recovery

Method used

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  • A high-standard nitrogen and phosphorus removal system for urban sewage without additional carbon sources
  • A high-standard nitrogen and phosphorus removal system for urban sewage without additional carbon sources
  • A high-standard nitrogen and phosphorus removal system for urban sewage without additional carbon sources

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Experimental program
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Effect test

Embodiment 1

[0033] like figure 1 As shown in the figure, a high-standard denitrification and phosphorus removal system for urban sewage without external carbon source, it includes a chemical-biological flocculation reaction tank 1, a sedimentation tank 2 and a mainstream anammox reaction tank 3; in the chemical-biological flocculation reaction tank 1 is provided with urban sewage water inlet interface, flocculant addition interface and drainage interface, the sedimentation tank 2 is provided with a water inlet interface, a drainage interface and a sludge discharge interface, and the mainstream anammox reaction tank 3 is provided with a water inlet interface It is connected to the drainage interface; the urban sewage inlet interface of chemical-biological flocculation reaction tank 1 is connected to urban sewage, and the flocculant addition interface of chemical-biological flocculation reaction tank 1 is connected to the flocculant, and the drainage of chemical-biological flocculation react...

Embodiment 2

[0038] like figure 2 As shown, this embodiment is based on the embodiment 1, but also adds a denitrification-phosphor removal biological pool 4 and a solid-liquid separation pool 5, and the denitrification-phosphor removal biological pool 4 is provided with a water inlet interface and a mud inlet interface. With the drainage interface, the solid-liquid separation tank 5 is provided with a water inlet interface, a drainage interface and a sludge discharge interface; The pipelines are connected, the sludge discharge interface of the sedimentation tank 2 is connected to the sludge inlet interface of the denitrification-phosphor removal biological tank 4 through another pipeline, and the drainage interface of the denitrification-phosphor removal biological tank 4 is connected to the solid-liquid separation tank 5. The water inlet interface is connected through a pipeline, the sludge discharge interface of the solid-liquid separation tank 5 and the sludge inlet interface of the de...

Embodiment 3

[0042] like image 3 As shown, this embodiment is based on the embodiment 1, but also adds a denitrification-phosphor removal biological pool 4 and a solid-liquid separation pool 5, and the denitrification-phosphor removal biological pool 4 is provided with a water inlet interface and a mud inlet interface. With the drainage interface, the solid-liquid separation tank 5 is provided with a water inlet interface, a drainage interface and a sludge discharge interface; the pipeline between the drainage interface of the sedimentation tank 2 and the water inlet interface of the mainstream anammox reaction tank 3 is divided. One outlet is connected to the water inlet port of the denitrification-phosphor removal biological pool 4, the sludge discharge port of the sedimentation tank 2 is connected to the sludge inlet port of the denitrification-phosphor removal biological pool 4 through another pipeline, and the denitrification-phosphor removal biological pool The drainage interface of...

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Abstract

The present invention relates to a high-standard urban sewage nitrogen and phosphorus removal system without external carbon sources. Urban sewage is fed into an urban sewage water inlet of a chemical-biological flocculation reaction tank; flocculant is fed into a flocculant adding port of the chemical-biological flocculation reaction tank; a drainage port of the chemical-biological flocculation reaction tank is connected with a water inlet of a sedimentation tank by a pipe; a drainage port of the sedimentation tank is connected with a water inlet of a mainstream anammox reaction tank by a pipe; a drainage port of the mainstream anammox reaction tank is connected to a drainage pipeline; and a sludge discharge port of the sedimentation tank is connected into the urban sewage water inlet of the chemical-biological flocculation reaction tank by a pipe. According to the system provided by the present invention, an anammox process and a traditional process are integrated organically, the drawback that in the case of a large amount of water flow and significant fluctuations of water quality, quantity and environmental conditions, the anammox process runs unstably is avoided; nitrogen removal efficiency is high; and the external carbon sources are not required even if the carbon nitrogen ratio is low.

Description

technical field [0001] The invention relates to a sewage treatment system, which is a high-standard denitrification and phosphorus removal system for urban sewage without external carbon sources. Background technique [0002] With the continuous intensification of eutrophication of water bodies, the denitrification and phosphorus removal of urban sewage has always attracted much attention. The traditional biological nitrogen and phosphorus removal process has been widely used in urban sewage treatment, but there are disadvantages such as high energy consumption and material consumption, long process flow, and large area. However, it is also necessary to add a large amount of external carbon sources. Therefore, the development and application of new efficient, green and low-carbon wastewater treatment process systems has become an important trend in current and future wastewater treatment. [0003] As a new biological denitrification technology, compared with the traditiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/04
CPCC02F3/00C02F3/02C02F3/28C02F3/302C02F9/00C02F11/04
Inventor 郑兴灿夏琼琼孙永利李鹏峰
Owner NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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