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Anti-plugging method and device of constructed wetland

A constructed wetland and anti-blocking technology, applied in chemical instruments and methods, aerobic and anaerobic process treatment, sustainable biological treatment, etc., to achieve the effect of improving operation efficiency and providing removal efficiency

Inactive Publication Date: 2011-07-20
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an anti-clogging method for constructed wetlands, which can effectively control the clogging phenomenon and improve the removal efficiency of pollutants in the wetland system under the premise of normal operation of the wetland system

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  • Anti-plugging method and device of constructed wetland

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Embodiment 1

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] figure 1 It is a structural schematic diagram of the anti-blocking device of the constructed wetland of the present invention, figure 2 for figure 1 Sectional view along line B-B, image 3 for figure 1 Sectional view along line C-C. see Figure 1-3 As shown, an anti-blocking device for a constructed wetland distributes water through perforated pipes arranged on the top layer of the vertical flow constructed wetland 10, and discharges water from the catchment area at the bottom. Area substrate 6, wetland substrate 3, plant wetland plants on the wetland substrate 3, such as cattail, reed, canna, calamus, etc., wherein the substrate of the catchment area is gravel 6, and the wetland substrate 3 is coarse sand. An air delivery pipe 2 (both PVC pipes) is set in the wetland matrix 3, and an aeration branch pipe 5 is arranged in parallel at a dis...

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Abstract

The invention discloses an anti-plugging device of a constructed wetland. The anti-plugging device is characterized by comprising a water collection area substrate and a wetland substrate which are distributed in a vertical current constructed wetland from down to up, wherein wetland plants are grown on the wetland substrate; a pneumatic tube is installed in the wetland substrate; the horizontal section of the wetland substrate faces downwardly and provided with an aeration branch pipe in parallel; the end head of the aeration branch pipe is provided with an aeration head, and the aeration head is located in the middle of the wetland in a vertical direction; one end of the pneumatic tube extending out of the wetland substrate is connected with a gas pump and provided with a valve; and the water collection area substrate is made of gravel, and the wetland substrate is made of coarse sand. The air passes through the pneumatic tube by the gas pump and then is output from the aeration branch pipe and the aeration head, so that the convention current is formed between the air and downlink flooding water so as to impact substrate particles, thereby improving effective porosity, inhibiting blockage and ensuring aerobic environment required by activity of wetland microorganisms.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an anti-blocking method and device for a vertical flow artificial wetland, which is suitable for sewage treatment of wetlands with high pollution load, high concentration of organic and inorganic particles, and prone to blockage. Sewage treatment in low temperature climate conditions. Background technique [0002] Constructed wetland is a new technology of sewage treatment ecological engineering developed in the 1970s. Due to the characteristics of low investment, low energy consumption, and simple management, it is widely used in domestic sewage and non-point source pollution treatment, landfill leachate disposal, and lake pollution prevention and control in small and medium-sized towns and rural areas. [0003] The long-term engineering practice shows that no matter what kind of constructed wetland, there will be different degrees of clogging after a perio...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/30
CPCY02W10/10
Inventor 倪利晓王蔚卿李时银朱亮李勇
Owner HOHAI UNIV
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