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Multilayer circulating vertical constructed wetland system

A constructed wetland system and multi-layer circulation technology, which is applied in sustainable biological treatment, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of easily exceeding the standard of nitrogen and phosphorus content, single filling layer, inconvenience, etc. , achieve good impurity adsorption effect, improve purification effect, and high filtration efficiency

Active Publication Date: 2017-05-31
安徽新季环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the vertical flow artificial wetland, the sewage infiltrates vertically downward from the surface layer, and passes through different packing layers successively in the process of flowing downward to achieve the purpose of purification. It has a strong ability to treat aerobic organic matter in wastewater, but now Some vertical flow constructed wetlands have been proved to have the following disadvantages by practice: 1. The filling layer is too single, resulting in unstable treatment effect, and the nitrogen and phosphorus content in the effluent is easy to exceed the standard; It is very troublesome to dredge; 3. The packing layer needs to be replaced after a period of use. The existing vertical constructed wetland needs to dig up all the wetland to replace the packing layer, which is very inconvenient; 4. The current vertical constructed wetland directly imports sewage, and then Purify by flowing down vertically in the direction of gravity, which cannot achieve a better circulation and filtration effect under the existing floor area, and the efficiency cannot reach higher

Method used

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  • Multilayer circulating vertical constructed wetland system
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  • Multilayer circulating vertical constructed wetland system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A multi-layer circulating vertical artificial wetland system, including a wetland base unit, a multi-layer circulation unit, an aquatic plant unit and an inlet and outlet water unit, the multi-layer circulation unit is arranged inside the wetland base unit, and the aquatic plant unit is planted above the multi-layer circulation unit , the water inlet and outlet units are set on the top and bottom of the multi-layer circulation unit; the wetland base unit includes the reaction tank 1 and the anti-seepage wall 2 laid close to the inner wall of the reaction tank 1, the reaction tank 1 is a concrete structure, and the concrete structure is used as the foundation, which is very Strong and reliable, the anti-seepage wall 2 is an asbestos board, and the asbestos board material has good sealing performance and can effectively prevent water leakage.

[0030] The multi-layer circulation unit includes three sets of identical circulation pipes, a group of "mountain" type pipes 8, so...

Embodiment 2

[0034] A multi-layer circulating vertical artificial wetland system, including a wetland base unit, a multi-layer circulation unit, an aquatic plant unit and an inlet and outlet water unit, the multi-layer circulation unit is arranged inside the wetland base unit, and the aquatic plant unit is planted above the multi-layer circulation unit , the water inlet and outlet units are set on the top and bottom of the multi-layer circulation unit; the wetland base unit includes the reaction tank 1 and the anti-seepage wall 2 laid close to the inner wall of the reaction tank 1, the reaction tank 1 is a concrete structure, and the concrete structure is used as the foundation, which is very Strong and reliable, the anti-seepage wall 2 is an asbestos board, and the asbestos board material has good sealing performance and can effectively prevent water leakage.

[0035] The multi-layer circulation unit includes three sets of identical circulation pipes, a group of "mountain" type pipes 8, so...

Embodiment 3

[0039] Nitrogen and phosphorus treatment effect experiment:

[0040] Three groups of sewage experimental groups were taken from sewage pools in three different places, and the three groups of water bodies taken from different sewage pools were respectively flowed into the circulation pipe of this wetland system through the water inlet pipe, and the original sewage water body and the wetland system were treated respectively. After the water body carried out the mensuration of nitrogen and phosphorus content, the result is as shown in table 1 below:

[0041] Table 1

[0042]

[0043] According to the data in Table 1, the multi-layer circulating vertical constructed wetland system of the present invention has a remarkable effect on the purification and removal of nitrogen and phosphorus content, and can more greatly reduce the nitrogen in the polluted water body within the effective floor area. Phosphorus has a good removal effect, and the higher the nitrogen and phosphorus c...

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Abstract

The invention discloses a multilayer circulating vertical constructed wetland system which comprises a wetland base course unit, a multilayer circulating unit, an aquatic plant unit and a water inlet and outlet unit, wherein the wetland base course unit comprises a reaction tank and an anti-seepage wall laid in a manner of close attachment to the inner wall of the reaction tank. According to the system, filler layers are vertically connected through three pipelines, and are connected through second flanges, so that a good mutual sealing effect can be achieved; only the corresponding pipeline is required to be directly taken out for replacement of an inner filler, and the whole wetland system is not required to be dug out, so that a relatively better effect is achieved, and more convenience is brought to replacement; every three pipelines are connected to form a circulating pipe, each wetland system comprises three groups of circulating pipes, and sewage flows into a part above any circulating pipe, and flows out of parts above the other two groups of circulating pipes, so that a circulating filtering effect, higher filtering efficiency and higher effectiveness can be achieved under the same occupied area.

Description

technical field [0001] The invention relates to the technical field of constructed wetlands, in particular to a multi-layer circulating vertical constructed wetland system. Background technique [0002] Constructed wetlands are ground similar to swamps that are artificially built and operated under control. At present, constructed wetland systems are generally divided into horizontal flow, subsurface flow, and vertical flow. It is widely used due to its high efficiency and the fact that the entire system can be completely built underground. [0003] In the vertical flow artificial wetland, the sewage infiltrates vertically downward from the surface layer, and passes through different packing layers successively in the process of flowing downward to achieve the purpose of purification. It has a strong ability to treat aerobic organic matter in wastewater, but now Some vertical flow constructed wetlands have been proved to have the following disadvantages by practice: 1. The ...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/32Y02W10/10
Inventor 黄鑫
Owner 安徽新季环保科技有限公司