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Biological retention pond capable of removing phosphorus and removing peculiar smell

A bioretention tank and deodorization technology, which is applied in the direction of sustainable biological treatment, biological water/sewage treatment, water pollutants, etc., can solve the problems of single function of bioretention tank and inability to effectively treat black and odorous water bodies

Active Publication Date: 2020-02-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a bioretention pond for removing phosphorus and odor, which solves the problem that the existing bioretention pond has a single function and cannot effectively treat black and odorous water bodies

Method used

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  • Biological retention pond capable of removing phosphorus and removing peculiar smell

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Effect test

Embodiment 1

[0044] A high-efficiency phosphorus removal bioretention tank, including the main body of the retention tank and the air intake system. The main body of the retention tank is a section with a height-to-width ratio of 5:3 and a rectangular pit in shape. The comprehensive water treatment capacity range is 2000m 3 / h / m 2 , Install a grid-type partition wall between each layer of the main body of the pool and the inner wall of the main body of the pool to block the short flow phenomenon. The inner wall of the main body of the pool needs to be wrapped with 20mm concrete and completely covered with a permeable geotextile, and the gap between the geotextile and the concrete is guaranteed to be 0.0025 mm, blocking the penetration phenomenon. The main body of the detention tank consists of a retention submerged layer, a green planting layer, a soil fixing layer, a deodorizing filler layer, a phosphorus removal filler layer and a support layer in order from top to bottom.

[0045] The ...

Embodiment 2

[0055] A high-efficiency phosphorus removal bioretention tank, including the main body of the retention tank and the air intake system. The main body of the retention tank has a cross-sectional aspect ratio of 5:2 and a rectangular pit in shape. The comprehensive water treatment capacity range is 3000m 3 / h / m 2 , Install a grid-type partition wall between each layer of the main body of the pool and the inner wall of the main body of the pool to block the short-flow phenomenon. The inner wall of the main body of the pool needs to be wrapped with 25mm concrete and completely covered with permeable geotextiles, and the gap between the permeable geotextiles and concrete is guaranteed to be within Between 0.0035mm, blocking the penetration phenomenon. The main body of the detention tank consists of a retention submerged layer, a green planting layer, a soil fixing layer, a deodorizing filler layer, a phosphorus removal filler layer and a support layer in order from top to bottom. ...

Embodiment 3

[0066] A high-efficiency phosphorus removal bioretention tank, including the main body of the retention tank and the air intake system. The main body of the retention tank is a section with a height-to-width ratio of 5:3 and a rectangular pit in shape. The comprehensive water treatment capacity range is 3500m 3 / h / m 2 , Install a grid-type partition wall between each layer of the main body of the pool and the inner wall of the main body of the pool to block the short flow phenomenon. The inner wall of the main body of the pool needs to be wrapped with 30mm concrete and completely covered with permeable geotextiles, and the gap between the geotextiles and the concrete is guaranteed to be 0.0025 mm, blocking the penetration phenomenon. The main body of the detention tank consists of a retention submerged layer, a green planting layer, a soil fixing layer, a deodorizing filler layer, a phosphorus removal filler layer and a support layer in order from top to bottom.

[0067] The ...

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Abstract

The invention discloses a biological detention pond capable of removing phosphorus and removing peculiar smell. The biological detention pond comprises a detention pond main body and an air inlet system, the detention pond main body sequentially comprises a detention submerged layer, a green plant planting layer, a soil fixing layer, a deodorization filler layer, a phosphorus removal filler layerand a supporting layer from top to bottom, and the deodorization filler layer comprises a microreactor, activated sludge and zeolite; the air inlet system comprises an air inlet pipe, the air inlet pipe is connected with the air inlet of an air blower, and the air outlet of the air blower is communicated with the deodorization filler layer and the supporting layer through air guide pipes; and a water guide pipe is arranged in the supporting layer. The structure of the detention pond has a long hydraulic retention time and a long seepage path, and the deodorization filler area provides a largenumber of attachment sites and a proper growth environment for growth of microorganisms, so the microorganisms can be in full contact with pollutants in runoff, the pollutant retention capacity of themicroorganisms is brought into play to the maximum extent, and the phosphorus removal effect and the treatment effect of black and odorous water are effectively improved; and the biological detentionpond has the advantages of simple process, and low operation and maintenance cost.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, in particular to a bioretention pond capable of removing phosphorus and odor. Background technique [0002] With the advancement of social civilization and technology, urbanization is the main theme of the development of modern human society. As early as 2011, the world's urbanization rate had reached 52.1%. However, serious environmental problems followed. The river ecosystem near the city was severely damaged, and the water body was polluted, which caused water shortages; with the development of urbanization, the degree of ground hardening continued to increase. The soil and ground are covered by a large amount of building materials, which to a large extent destroys the natural water cycle process, reduces the rate of surface seepage and confluence, makes it difficult to fully utilize rainwater resources, or accumulates in urban roads to form waterlogging, or carries a large a...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/12C02F3/34C02F101/10
CPCC02F3/301C02F3/34C02F3/1236C02F2303/02C02F2101/105Y02W10/10
Inventor 张耀华庄万元张旭张昊孙永军
Owner NANJING UNIV OF TECH
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