Stepped composite vertical flow artificial wetland sewage treatment device

A sewage treatment device and artificial wetland technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of high infrastructure construction, large floor area, poor nitrogen removal, etc. problems, to achieve the effect of prolonging the residence time, reducing the occupied area and reducing the maintenance cost

Inactive Publication Date: 2010-05-05
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The free surface flow artificial wetland treatment system has the advantages of simple process and low operating cost, but it occupies a large area and has low treatment effect
Although subsurface flow constructed wetlands have better treatment effects than free surface flow constructed wetlands, they also have the disadvantages of poor nitrogen removal and short service life.
Compared with the first two types of wetlands, vertical flow artificial wetlands have the best treatment effect, but they have disadvantages such as high infrastructure construction and high maintenance costs, and are relatively rare in practical applications.

Method used

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  • Stepped composite vertical flow artificial wetland sewage treatment device
  • Stepped composite vertical flow artificial wetland sewage treatment device
  • Stepped composite vertical flow artificial wetland sewage treatment device

Examples

Experimental program
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Embodiment 1

[0023] Embodiment one: see figure 1 with figure 2 , the step-type composite vertical flow artificial wetland sewage treatment device includes a downward pool 2 and an upward pool 3, and is characterized in that the whole is composed of several units 1; each unit is composed of an adjacent downward pool 2 and an upward pool 3, Separated by a separator 4 and connected at the bottom, the descending pool 2 is higher than the ascending pool 3, forming a step; two adjacent units 1 are separated by a baffle 5, and the ascending pool 3 of the previous unit 1 is connected to the The descending pool 2 of the next unit 1 is flush; in the descending pool 2 and the ascending pool 3, the matrix layer 6 and the soil layer 9 are filled sequentially from bottom to top, and the water distribution pipe 7 is laid on the soil layer 9 of the descending pool 2. Plants 8 are planted in the soil layer 9 of the descending pond 2 and the ascending pond 3 .

Embodiment 2

[0024] Embodiment two: see figure 1 with figure 2 , the present embodiment is the same as Embodiment 1, and the special features are: the descending pool 2 is 10-30cm higher than the ascending pool 3, and the matrix layer 6 in the descending pool 2 is also 10-30cm higher than the matrix layer 6 in the ascending pool 3 . The matrix layer 6 is any one or more mixtures of gravel, crushed stone, cinder, sand and pastoral soil, the purpose of which is to fix the plants 8, filter sewage and provide attachments for microorganisms. The particle size of matrix layer 6 decreases sequentially from bottom to top. Plant 8 can be selected from one or more of wild rice stems, calamus, cattails, rushes, jasmine flowers, cannas and reeds. The whole unit 1 is made of reinforced concrete or mixed bricks to form an anti-seepage pool structure.

[0025] The following examples illustrate the structure and technical points of the stepped composite vertical flow constructed wetland device. In e...

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Abstract

The invention relates to a stepped composite vertical flow artificial wetland sewage treatment device. The device comprises downflow tanks and upflow tanks, and the device is characterized in that the overall device is composed of a plurality of units, wherein each unit comprises a downflow tank and an upflow tank which are arranged next to each other, separated by a baffle plate and communicated with each other at the bottoms, the downflow tank is higher than the upflow tank to form a step; adjacent two units are separated by a baffle plate, the upflow tank of the previous unit and the downflow tank of the next unit are at the same level; matrix layers and soil layers are successively filled in the downflow tank and upflow tank of one unit from bottom to up, water pipes are paved on the soil layer of the downflow tank, and plants are planted in the soil layers of the downflow tank and upflow tank. The device has the advantages of wide application range, good restoration effect, low infrastructure cost, low management and maintenance cost, good appreciation and the like in the respect of restoring waterbody.

Description

technical field [0001] The invention belongs to a sewage treatment device, and specifically refers to a step-type compound vertical flow artificial wetland sewage treatment device with a small footprint, high treatment efficiency and integrated ornamental features. Background technique [0002] Water, as an important part of the ecological environment on which human beings depend, is increasingly polluted. In recent years, with the extensive use of pesticides and chemical fertilizers, the loss of nutrients such as nitrogen and phosphorus in farmland soil, and non-point source pollution, these nutrients have entered lakes and rivers along with agricultural irrigation runoff and surface runoff, causing serious water pollution. Eutrophication problem. Due to the complex mechanism of water eutrophication and the increasing difficulty of treatment, no economical and effective treatment technology has been established so far. In recent years, the use of constructed wetland treat...

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 方焰星何池全张绚璇詹跃武白胜雷雁茹梁霞张亚克李美秀
Owner SHANGHAI UNIV
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