Tidal flow constructed wetland with rich reoxygenation

A technology of artificial wetland and tidal flow, applied in the direction of sustainable biological treatment, water/sludge/sewage treatment, biological water/sewage treatment, etc. Dealing with the effect and other issues, to achieve the effect of reducing the cost, enhancing the reoxygenation capacity, and simplifying the water distribution system

Inactive Publication Date: 2010-11-24
JIANGXI ACADEMY OF ENVIRONMENTAL PROTECTION SCI
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  • Application Information

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Problems solved by technology

However, after a period of operation of the existing constructed wetland, the bed body may be blocked by a large number of microorganisms, which restricts the flow of water and air in the bed body and reduces the treatment effect
In the later stage, the contact time between the incoming water and the substrate is short, which affects the water outlet effect

Method used

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  • Tidal flow constructed wetland with rich reoxygenation
  • Tidal flow constructed wetland with rich reoxygenation

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Embodiment Construction

[0014] The specific embodiment of a strong reoxygenation tidal flow artificial wetland of the present invention is shown in the accompanying drawings, which includes wetland plants 2, substrate 1, water collecting pipes, wetland respirator 3 and an automatic control system. By simulating tidal flow to control water intake, reaction, drainage, and idleness, sewage purification is realized.

[0015] There are reeds, wild rice stems, and cannas on the surface of the wetland. The thickness of the substrate is 0.8m, and it is composed of large gravels, small gravels, and coarse sand from bottom to top. The particle size is 20-30mm, and an overflow tank 9 is provided on the upper part of the substrate 1. The wetland respirator 3 is composed of earth-shaped PVC pipes, and the two horizontal pipes are filled with small holes, which are respectively placed in different depths of the substrate. The vertical pipe communicates with the parts of the two horizontal pipes, and the upper end ...

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Abstract

The invention provides a tidal flow constructed wetland with rich reoxygenation, which comprises a matrix, wetland plants, gathering and distributing water pipes, wetland respirators and an automatic control system, wherein the matrix is divided into three layers and adopts thick-medium-thin size grading from bottom to top, the total thickness of the matrix is 0.8-1.2m and the upper part of the matrix is provided with a overflow channel; and the wetland plants have a developed root system and adapts to the local climate. The invention realizes sewage purification by simulating tidal flow to control inflow, reaction, drainage and vacancy; and by using a wetland respirator to strengthen reoxygenation capacity and reoxygenation depth of the constructed wetland, the invention greatly improves processing efficiency of ammonia nitrogen, has a simple water gathering and distributing system, reduces construction cost of the constructed wetland system, realizes full-automatic control in the whole process and has very simple operation management.

Description

technical field [0001] The invention relates to a constructed wetland, especially a strong reoxygenated tidal flow constructed wetland. It belongs to the field of environmental protection technology. Background technique [0002] Tidal stream constructed wetland is a type of constructed wetland proposed in recent years. In a tidal flow constructed wetland, the wetland bed is alternately filled with sewage and drained. During the process of sewage flowing into the bed, the air in the bed is gradually squeezed out and consumed, and the bed matrix is ​​gradually submerged. When the bed is completely filled with sewage, it will be drained. Through the alternating water and air movement, the oxygen transmission rate and consumption will be greatly improved, which will greatly improve the treatment effect of the reaction bed. The latest research results of the University of Birmingham show that when the water Excluded from the reaction bed, organic pollutants remain in the matr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 史晓燕邹新方红亚陈宏文陈建勇刘足根
Owner JIANGXI ACADEMY OF ENVIRONMENTAL PROTECTION SCI
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