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Enhanced nitrogen and phosphorus removal combined type artificial subsurface-flow wetland treatment system

A technology of artificial wetland system and subsurface wetland, which is applied in the field of combined artificial subsurface wetland treatment system for strengthening denitrification and phosphorus removal, can solve the problems of low denitrification reaction efficiency, lack of carbon source, large hydraulic load, etc., and achieves the improvement of nitrification reaction rate. , Strengthen the phosphorus removal efficiency and reduce the effect of clogging

Inactive Publication Date: 2016-08-31
上海秦森园林股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Subsurface flow constructed wetlands can be divided into vertical flow constructed wetlands and flat flow constructed wetlands, which have large hydraulic loads and large pollution loads, and have good removal effects on BOD, COD, SS, heavy metals and other pollution indicators, and there are few odors and breeding of mosquitoes and flies , can be used to treat sewage with high ammonia nitrogen content, but the efficiency of nitrogen and phosphorus removal in traditional subsurface flow constructed wetlands is often not high, and the packing layer is easy to clog
[0003] The main mechanism of nitrogen removal in constructed wetlands is the nitrification and denitrification of microorganisms. The dissolved oxygen content in traditional subsurface flow constructed wetlands is not high, and the denitrification process lacks carbon sources, resulting in low nitrification and denitrification reactions, and low nitrogen removal rates.

Method used

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  • Enhanced nitrogen and phosphorus removal combined type artificial subsurface-flow wetland treatment system

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Experimental program
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Embodiment 1

[0026] Such as figure 1 As shown, this embodiment strengthens the nitrogen and phosphorus removal combined artificial subsurface flow wetland treatment system, which includes a sedimentation tank 2, a front water collection buffer pool 3, a vertical flow artificial wetland system 4, an advection artificial wetland system 7, and a rear water collection buffer pool 8, a screen 1 is provided at the water inlet end of the sedimentation tank 2, an overflow weir 6 is provided between the sedimentation tank 2 and the front catchment buffer tank 3, and distributed on the vertical flow artificial wetland system 4 Aquatic plant layer 5, the lower part of the facing surface of the vertical flow constructed wetland system 4 is provided with a water inlet 11, and the upper part of the back surface of the vertical flow constructed wetland system 4 is provided with a water outlet pipe 12, and the water inlet 11 is located at the front water collection Between the buffer pool 3 and the vertic...

Embodiment 2

[0034] Such as figure 1 As shown, this embodiment strengthens the nitrogen and phosphorus removal combined artificial subsurface flow wetland treatment system, which includes a sedimentation tank 2, a front water collection buffer pool 3, a vertical flow artificial wetland system 4, an advection artificial wetland system 7, and a rear water collection buffer pool 8, a screen 1 is provided at the water inlet end of the sedimentation tank 2, an overflow weir 6 is provided between the sedimentation tank 2 and the front catchment buffer tank 3, and distributed on the vertical flow artificial wetland system 4 Aquatic plant layer 5, the lower part of the facing surface of the vertical flow constructed wetland system 4 is provided with a water inlet 11, and the upper part of the back surface of the vertical flow constructed wetland system 4 is provided with a water outlet pipe 12, and the water inlet 11 is located at the front water collection Between the buffer pool 3 and the vertic...

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Abstract

The invention discloses an enhanced nitrogen and phosphorus removal combined type artificial subsurface-flow wetland treatment system. The system comprises a sedimentation pool with a screen cloth, a front catchment buffer pool, a vertical flow artificial wetland, an advection artificial wetland system and a rear catchment buffer pool; algae and suspension pollutants in sewage are removed through the screen cloth, then, primary sedimentation of the sewage is completed inside the sedimentation pool, the sewage enters the front catchment buffer pool through an overflow weir, and then the sewage enters the vertical flow artificial wetland system through a water inlet, sufficient oxygen is provided for the vertical flow artificial wetland system through a micro-aeration device, then, the sewage enters the advection artificial wetland system after the adsorption effect of microorganisms, plants and matrixes, and the sewage is discharged into the rear catchment buffer pool after being treated by the advection artificial wetland system, and discharged out of the system through a water outlet pipe. According to the enhanced nitrogen and phosphorus removal combined type artificial subsurface-flow wetland treatment system, the nitrogen and phosphorus removal effect can be enhanced, and suspended particles, organic pollutants, heavy metal ions and other contaminants in sewage can be effectively removed.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a combined artificial subsurface flow wetland treatment system for enhanced nitrogen and phosphorus removal. Background technique [0002] Subsurface flow constructed wetlands can be divided into vertical flow constructed wetlands and flat flow constructed wetlands, which have large hydraulic loads and large pollution loads, and have good removal effects on BOD, COD, SS, heavy metals and other pollution indicators, and there are few odors and breeding of mosquitoes and flies , can be used to treat sewage with high ammonia nitrogen content, but the efficiency of nitrogen and phosphorus removal in traditional subsurface flow constructed wetlands is often not high, and the packing layer is easy to block. [0003] The main mechanism of nitrogen removal in constructed wetlands is the nitrification and denitrification of microorganisms. The dissolved oxygen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/281C02F1/52C02F3/32C02F3/34
Inventor 张微徐阳
Owner 上海秦森园林股份有限公司
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