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Undercurrent-surface current composite artificial marshland

A constructed wetland and composite technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., to achieve good effluent quality, high water purification efficiency, low investment and operating costs

Active Publication Date: 2008-01-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the above-mentioned existing artificial wetland technology, the present invention provides a combined latent and surface flow artificial wetland with the advantages of low cost, small floor area and good treatment effect.

Method used

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  • Undercurrent-surface current composite artificial marshland
  • Undercurrent-surface current composite artificial marshland

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Embodiment Construction

[0016] As shown in Figure 1, the subsurface-surface flow composite constructed wetland of the present invention combines the water purification functions of subsurface flow wetland and surface flow wetland in the vertical direction in a depression 9 with a certain length-to-width ratio. It includes a bed body 1, a subsurface layer water storage tank 2, a surface flow layer water storage tank 4, a water delivery pipe 18, aquatic plants, a surface flow layer water collection pool 14 and a subsurface layer water collection pool 17. The bed body 1 is made of masonry and cement, and its lower half is located below the ground for heat preservation. One side of the length direction of the bed body 1 is provided with a front water distribution baffle 3 and a rear water distribution baffle 6, and a subsurface reservoir 2 is formed between the side wall of the bed body 1 and the front water distribution baffle 3, and the front water distribution baffle A surface layer water storage tank...

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Abstract

The invention provides a subsurface flow and surface flow complex manmade wetland. The complex manmade wetland comprises a land, a subsurface reservoir and a surface reservoir, a surface collecting pool and a subsurface collecting pool. One side of the land is provided with the subsurface reservoir and the surface collecting pool, and the other side of the land is provided with the subsurface collecting pool and the surface collecting pool. The subsoil of the land is filled with a gravel layer, and the upper soil is covered with a pastoral earth; the filling depth ratio between the gravel layer and the pastoral earth is 3: 2. Emersed plant, floating plant and submerged plant are planted on the pastoral earth of the upper soil of the land; the subsurface collecting pool is communicated with the surface reservoir through a water pipe equipped with a valve. The invention combines the advantages of subsurface wetland and surface wetland such as high water purification efficiency, high water quality, high hydraulic load, low investment and operational charge, and good treatment effect; according to actual need, a plurality of measures can be used such as alternatively adopting subsurface flow and surface flow, subsurface flow and surface flow.

Description

technical field [0001] The invention belongs to the field of sewage purification, in particular to a latent-surface flow compound artificial wetland. Background technique [0002] Constructed wetlands are man-made, controllable and engineered wetland systems, which are designed and constructed to treat wastewater by optimizing the combination of physical, chemical and biological effects in the natural wetland ecosystem. It has the advantages of low investment and operation costs and good sewage treatment effect. According to the flow mode of sewage in constructed wetlands, constructed wetlands can be divided into surface flow constructed wetlands and subsurface flow constructed wetlands. Surface flow Constructed wetlands are similar to natural wetlands in that wastewater flows over the surface of the wetland. This type of artificial wetland has the advantages of less investment, simple operation, and low operating costs; the disadvantages are that it occupies a large area,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/32
CPCY02W10/10
Inventor 张建翟冰张成禄
Owner SHANDONG UNIV
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