Ladder-type composite constructed-wetland apparatus for processing low-pollution water

A technology of artificial wetlands and low-pollution water, applied in the directions of water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of aggravating water environment pollution, reduce construction costs and Post-operating costs, increasing oxygen enrichment, and reducing floor space

Inactive Publication Date: 2014-09-03
FUDAN UNIV
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Problems solved by technology

Due to the lag in the construction of rural sewage treatment facilities, a large amount of untreated domestic sewage is directly discharg

Method used

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  • Ladder-type composite constructed-wetland apparatus for processing low-pollution water

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Example Embodiment

[0022] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0023] The stepped composite constructed wetland device for low-pollution water treatment provided in this embodiment has a structure such as figure 1 As shown; it includes high-level water distribution tank 1, first-level vertical flow constructed wetland 2, two-level composite vertical flow constructed wetland 3, three-level subsurface flow type constructed wetland 4 and anaerobic sump 5; high-level water distribution tank 1, first-level vertical flow Constructed wetland 2, secondary composite vertical flow constructed wetland 3, and tertiary subsurface flow constructed wetland 4 are arranged alternately in sequence, and the height of the space position decreases successively, forming a stepped structure; anaerobic water collection tank 5 is located underground, and a power distribution cabinet is installed above it , The lifting pump is set inside, and the p...

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Abstract

The invention belongs to the technical field of environment-engineering sewage processing, and concretely relates to a ladder-type composite constructed-wetland apparatus for processing low-pollution water. The apparatus comprises an elevated water-distribution tank, a first-grade vertical-flow constructed wetland, a second-grade composite vertical-flow constructed wetland, a third-grade subsurface-flow constructed wetland and an anaerobic water-collecting tank; the elevated water-distribution tank is a cavity with a sealed top end, the cavity is inside paved with a filler, and a water-collecting pipe net is arranged close to the bottom; ecological plants are grown surfaces layers of the first-grade vertical-flow constructed wetland, the second-grade composite vertical-flow constructed wetland and the third-grade subsurface-flow constructed wetland, matrix and fillers are used to pave in inner layers of the three kinds of constructed wetlands, and water-collecting pipe nets are arranged at bottom layers of the three kinds of constructed wetlands; and the anaerobic water-collecting tank is an underground facility, the top end is provided with a cover, and the inner layer is paved with a soft filler. The beneficial effects comprise that the apparatus is high in decontamination efficiency, low in occupied land area and construction cost, low in anaphase management cost and simple to operate, and is suitable for processing of rural domestic sewage and low-pollution water.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering sewage treatment, and in particular relates to a stepped composite constructed wetland device for low-pollution water treatment. Background technique [0002] Rural domestic sewage is an important part of non-point source pollution. It mainly contains organic metabolic waste, some animal and plant food residues, and physiological excretion (urine, feces), etc. It also contains a large number of non-pathogenic microorganisms and a small amount that can cause human Pathogenic microorganisms of infectious diseases. Due to the lag in the construction of rural sewage treatment facilities, a large amount of untreated domestic sewage is directly discharged into ditches, rivers, and finally into receiving water bodies such as lakes, which intensifies the pollution of the water environment. Considering the current economic foundation and management level in rural areas, the treatment of ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/32
CPCY02W10/10
Inventor 郑正黄威栾晓男张继彪李纪华张良杰
Owner FUDAN UNIV
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