Soil column combination matrix composite flow artificial wetland treatment system

A technology for artificial wetlands and treatment systems, applied in the field of water treatment, can solve problems such as the inability to give full play to the substrate function of the wetland system, the unfavorable microenvironment of the wetland system's diversification, and the inability to comprehensively consider the contribution of physical and chemical effects and microbial effects to water purification. , to achieve the effect of promoting nitrification and denitrification capacity, increasing habitat diversity, and enriching habitat types

Inactive Publication Date: 2013-10-30
TONGJI UNIV
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Problems solved by technology

However, at present, the internal flow state of constructed wetlands is dominated by a single flow state (horizontal flow or vertical flow), which is not conducive to the construction of a diverse microenvironment of the wetland system, and cannot give full play to the role of the wetland system matrix; In terms of substrates, constructed wetlands are mostly based on a single substrate or a simple combination of multiple substrates, and it is impossible to comprehensively consider the contribution of physical, chemical and microbial effects to water purification.

Method used

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  • Soil column combination matrix composite flow artificial wetland treatment system
  • Soil column combination matrix composite flow artificial wetland treatment system
  • Soil column combination matrix composite flow artificial wetland treatment system

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Experimental program
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Embodiment 1

[0027] Experiment location: Zhangyan Village, Pingyao Town

[0028] Treatment objects: micro-polluted water bodies in the village-level rivers of Zhangyan Village. The pollution sources of this water body are mainly rural non-point source pollution, rural domestic sewage and breeding wastewater. The organic matter content in the water is relatively small, and nitrogen and phosphorus pollution is the main water quality problem.

[0029] Based on the soil column composite matrix composite flow constructed wetland system proposed in the present invention, we have designed three sets of different composite matrix composite flow constructed wetland systems. The constructed wetland pool body is welded by PVC plates, and the length, width, and height dimensions are 1.4m× 0.4m×0.7m, the interior is divided into four areas by PVC board: front filter unit I, combined matrix denitrification unit II, combined matrix phosphorus removal unit III, fine filtration unit IV, the lengths are 0.1, 0.6,...

Embodiment 2

[0036] Project location: the intersection of Caoqiao Creek and Beitiao Creek in Pingyao Town

[0037] Treatment object: the micro-polluted water body in the Caoqiao River channel. The pollution sources of this water body are mainly rural non-point source pollution, rural domestic sewage and aquaculture wastewater. The characteristics of water quality and quantity are: large water volume, low organic matter content, and relatively high nutrient concentration. Therefore, removal of nutrients is the main purpose of the treatment process.

[0038] Based on the soil column combined matrix composite flow constructed wetland system proposed in the present invention, we have designed a daily processing capacity of 2000m 3 / d eutrophic river water constructed wetland treatment demonstration project, the project is located on the floodplain at the intersection of Caoqiao Stream, the main pollution sources of upstream inflow are farmland irrigation wastewater, storm runoff, aquaculture wastewa...

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Abstract

The invention relates to a soil column combination matrix composite flow artificial wetland treatment system, which uses a composite underflow artificial wetland mode and comprises an artificial wetland pool, a soil column combination matrix system, an artificial wetland plant system and a water distribution system. The soil column combination matrix system is the core of the whole artificial wetland system and comprises a prefiltering unit, a combination matrix denitrification unit, a combination matrix dephosphorization unit and a fine filtering unit, and soil columns are arranged in the combination matrix denitrification unit and the combination matrix dephosphorization unit. The artificial wetland plant system is formed by aquatic plants such as reeds, cattails, cane shoots and the like by mixed planting and planted onto the combination matrix denitrification unit and the combination matrix dephosphorization unit after earthing. The artificial wetland pool is matched with the water distribution system to construct the artificial wetland system having multiple flow regimes including vertical downward flow, vertical upward flow, horizontal underflow and the like. The soil column combination matrix composite flow artificial wetland treatment system is reasonable in design of each portion, scientific in structure, small in occupied space, low in operation cost and convenient in management, and is a novel artificial wetland technique which can effectively purifying polluted water body.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a soil column combined matrix compound flow artificial wetland treatment system. Background technique [0002] Constructed wetland is a sewage treatment technology that strengthens its purification ability through artificial construction and supervision and control based on the principle of natural wetland purification of sewage. In the process of designing and constructing constructed wetlands, we can choose and match in terms of water inflow and outflow, flow state, substrate and plants to optimize the physical, chemical and biological effects in the constructed wetland ecosystem, through the synergy of the three aspects To remove pollutants in sewage and purify water quality. [0003] According to the position of the water surface in the wetland, constructed wetlands are usually divided into surface flow constructed wetland systems and subsurface flow cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 薛龙李建华杨长明蔡雯娟
Owner TONGJI UNIV
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