Combined type artificial wetland sewage treatment system and combined type artificial wetland sewage treatment method

A technology of sewage treatment system and constructed wetland, which is applied in biological water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. The effect of low investment, total nitrogen and water clarity improvement

Inactive Publication Date: 2018-12-18
国合环境研究有限公司
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  • Application Information

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Problems solved by technology

The invention has small construction investment, convenient operation and management, does not need to add any medicine, and has a certai...

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  • Combined type artificial wetland sewage treatment system and combined type artificial wetland sewage treatment method
  • Combined type artificial wetland sewage treatment system and combined type artificial wetland sewage treatment method
  • Combined type artificial wetland sewage treatment system and combined type artificial wetland sewage treatment method

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Embodiment Construction

[0037] Below in conjunction with accompanying drawing and sewage treatment process, the present invention will be described in further detail:

[0038] The present invention adopts the composite constructed wetland treatment technology, which is sequentially composed of the following six treatment units. First, the sewage to be treated is lifted into the high-level pool by the water pump once, that is, the ecological adjustment sedimentation tank. The sedimentation tank is composed of 3 sedimentation units in series, and the water level is lowered sequentially. A mud drainage well is set in the first sedimentation tank; The water distribution pipeline enters the second treatment unit, which is the two-way cross-flow ecological filter unit. According to the shape and area of ​​the site, multiple sets of treatment units can be arranged in parallel for use. The unit pool is filled with gravel filler with uniform particle size distribution, and can Two-way water inflow and outflow...

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Abstract

The invention discloses a combined type artificial wetland sewage treatment system and a combined type artificial wetland sewage treatment method. The system comprises an ecological regulation sedimentation tank, a two-way cross-flow ecological filtration unit, a multi-layer medium subsurface flow wetland, a baffled subsurface flow wetland, a surface flow wetland, an ecological artificial lake, acommunicating pipeline of the ecological artificial lake and a water distribution channel which are sequentially connected with each other. The system and the method create a nitrification-denitrification environment for microbial denitrification by combining the two-way cross-flow ecological filtration unit, the multi-layer medium subsurface flow wetland and the baffled subsurface flow wetland, thereby enabling the treatment system to realize a good denitrification effect; after sewage is lifted at a time, the lifting of the sewage relies entirely on gravity water distribution, so that energyconsumption is not generated during treatment. Furthermore, building waste blocks are used as wetland packing, so that resource recycling is realized, and the construction cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a compound artificial wetland sewage treatment system and a treatment method thereof. Background technique [0002] With the continuous acceleration of urbanization, domestic sewage and industrial wastewater containing a large amount of nitrogen and phosphorus continue to enter surface water bodies, resulting in eutrophication of water bodies. At present, although the conventional secondary sewage treatment plants built in major cities can remove total nitrogen to a certain extent, the removal effect is limited, and the effluent can only meet the first-level A treatment water quality of the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) ( TN<15mg / L), which is much higher than the Class V water quality standard (TN<2mg / L) of the "Environmental Quality Standards for Surface Water" (GB3838-2002); in addition, the construct...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F3/32C02F3/34C02F101/30
CPCC02F3/302C02F3/308C02F3/32C02F3/34C02F2001/007C02F2101/30C02F2301/08
Inventor 吴亚东张琼华王晓昌刘晓源刘金光
Owner 国合环境研究有限公司
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