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Multi-stage filler constructed wetland construction method

A technology of artificial wetland and construction method, which is applied in the field of ecology and environmental protection, can solve the problems of combined use of multi-stage wetlands and low purification efficiency, and achieves the effect of avoiding wetland blockage and improving the level of reoxygenation.

Inactive Publication Date: 2016-03-02
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the low purification efficiency of the traditional subsurface wetland system and the insufficiency of multi-level wetland combination, and provide a multi-level filler artificial wetland construction method

Method used

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  • Multi-stage filler constructed wetland construction method
  • Multi-stage filler constructed wetland construction method
  • Multi-stage filler constructed wetland construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] as attached figure 1 , attached figure 2 and attached image 3 As shown, the treated tail water volume is 12m 3 The overall specification of the multi-stage filler subsurface flow constructed wetland in / d is L×B×H=15.96m×3.74m×2.00m, which is divided into 5 areas, and a set of length L1=1.0m is built sequentially along the tailwater flow direction Pool I, water distribution tank II with length L2=1.0m, wetland bed area III with length L3=10m, sedimentation area IV with length L4=1.0m and clear water pool V with length L5=1.0m, the overall It is made of notoginseng wall bricks, and the water distribution tank and the sedimentation area are separated by two or four brick walls (small holes with a diameter of 20mm at a distance of 300mm are laid on the wall). The wetland bed area is sequentially filled with gravel with a particle size of 40-50 mm and a thickness of H1 = 26 cm, red brick fragments with a particle size of 20-40 mm and a thickness of H2 = 52 cm, steel sl...

Embodiment 2

[0029] as attached figure 1 , attached figure 2 and attached image 3 As shown, the treated tail water volume is 21m 3 The overall specification of the multi-stage filler subsurface flow constructed wetland in / d is L×B×H=17.96m×5.24m×2.00m, which is divided into 5 areas, and a set of length L1=1.0m is constructed sequentially along the tailwater flow direction Pool I, water distribution tank II with length L2 = 1.0m, wetland bed area III with length L3 = 12m, sedimentation area IV with length L4 = 1.0m, and clear water pool V with length L5 = 1.0m. It is made of notoginseng wall bricks, and the water distribution tank and the sedimentation area are separated by two or four brick water distribution walls (small holes with a diameter of 20mm at a distance of 300mm are laid on the wall). The wetland bed area is sequentially filled with gravel with a particle size of 40-50 mm and a thickness of H1 = 26 cm, red brick fragments with a particle size of 20-40 mm and a thickness o...

Embodiment 3

[0031] as attached figure 1 , attached figure 2 and attached image 3 As shown, the treated tail water volume is 56m 3 The overall specification of the multi-stage filler subsurface flow constructed wetland in / d is L×B×H=26.96m×4.74m×2.00m, which is divided into 5 areas, and a set of length L1=1.0m is built sequentially along the tailwater flow direction Pool I, water distribution tank II with length L2 = 1.0m, wetland bed area III with length L3 = 21m, sedimentation area IV with length L4 = 1.0m, and clear water pool V with length L5 = 1.0m. It is made of notoginseng wall bricks, and the water distribution tank and the sedimentation area are separated by two or four brick water distribution walls (small holes with a diameter of 20mm at a distance of 300mm are laid on the wall). The wetland bed area is sequentially filled with gravel with a particle size of 40-50 mm and a thickness of H1 = 26 cm, red brick fragments with a particle size of 20-40 mm and a thickness of H2 =...

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Abstract

The invention belongs to the ecological and environmental protection field, and relates to a multi-stage filler constructed wetland construction method. According to a horizontal subsurface flow type multi-stage filler constructed wetland constructed by the method, step-by-step filled gravels, red brick fragments, steel slag, ceramsite and clay are used as wetland fillers, and staggered planted zizania aquatica, pontederia cordata, ryegrass and photiniaxfrasery are used as wetland plants, and through synthetic action of filler filtration adsorption, plant absorption and microbial decomposition, city sewage plant tail water is effectively deeply purified. The depth of the wetland and the length and width of a pool body can be set according to different tail water treatment amounts. The multi-stage filler constructed wetland construction method has the characteristics of less investment, low cost, stable treatment effect, convenient operation and management and the like.

Description

technical field [0001] The invention belongs to the field of ecology and environmental protection, and in particular relates to a method for constructing a multi-stage filler artificial wetland. Background technique [0002] At present, my country's urban sewage plants generally discharge the tail water into the nearby riverside of the plant, causing serious damage to the aquatic environment in some areas of the riverside around the tail water discharge outlet. Discharge Standards" (GB18918-2002) Class I A water quality standards, still far higher than the "Surface Water Environmental Quality Standards" (GB3838-2002) Class V water quality standards, that is, "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002 ) NH of Class A 3 -N, COD, TN, TP discharge standards are 5.0mg / L, 50mg / L, 15mg / L, 0.5mg / L, while the NH 3 -N, COD, TN, TP standards are 2.0mg / L, 40mg / L, 2.0mg / L, 0.4mg / L. Considering that the purification efficiency of the traditional subsu...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/32C02F2301/08Y02W10/10
Inventor 张文艺陈晶何敏张伟王莉娜许燕峰
Owner CHANGZHOU UNIV
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