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Construction method of a vertical flow artificial wetland packing bed

A technology of artificial wetland filler and construction method, which is applied in the field of artificial wetland to achieve the effect of efficient removal

Inactive Publication Date: 2017-03-22
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] A large number of studies have shown that there is no filler in the prior art that can efficiently remove nitrogen, phosphorus, and organic matter. Therefore, for complex domestic sewage, it is necessary to rationally combine high-quality fillers with better single pollutant removal effects to construct A constructed wetland packing bed that can efficiently remove multiple pollutants at the same time

Method used

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  • Construction method of a vertical flow artificial wetland packing bed
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  • Construction method of a vertical flow artificial wetland packing bed

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specific Embodiment approach

[0018] The construction method of the vertical flow artificial wetland packing bed of the present invention, its preferred embodiment is:

[0019] The construction method of the packing bed is A-type packing layer, B-type packing layer, C-type packing layer and D-type packing layer from bottom to top;

[0020] The A-type packing layer is a ceramsite matrix, the B-type packing layer is a bamboo charcoal matrix, the C-type packing layer is a zeolite matrix, and the D-type packing layer is a limestone matrix.

[0021] The ceramsite matrix is ​​granular, with a particle size of 1-3 cm. The bamboo charcoal matrix is ​​columnar, with a size of length × width × height = 15 cm × 5 cm × 5 cm. The zeolite matrix is ​​granular, with a particle size of about 1 cm. , the limestone matrix is ​​granular, with a particle size of 1-3 cm.

[0022] The volume ratio of the A-type packing layer, B-type packing layer, C-type packing layer and D-type packing layer is 3:3:3:2.

[0023] The height o...

Embodiment 1

[0032] In this example, the plant-free vertical flow artificial wetland simulation system device uses a PP-R board water tank with a specification of 1.5m×1m×1m (length×width×height), in which the height of the packing bed is 88cm, and the side wall of the upper part of the packing bed is 10cm There is an overflow at the top of the filling bed, no plants are planted on the top of the packing bed, and PVC pipes with uniform holes are used for water distribution at the bottom of the water tank. A method for constructing a vertical flow artificial wetland packing bed, which is composed of ceramsite, bamboo charcoal, zeolite and limestone. It is characterized in that: when constructing a plant-free vertical flow artificial wetland, the water distribution device is filled with a ceramsite matrix with a particle size of 1 to 3 cm, and the filling height is 24 cm, and then the pure polyethylene (HPDE) material with a mesh size of 0.6 cm is laid Net (the net is mainly used to separate...

Embodiment 2

[0034] In this example, a artificial wetland simulation system with vertical flow of plants is adopted, and the simulation device and operating parameters are the same as those in Example 1. The difference is that young pikegrass plants are transplanted on the packing bed in this simulation system, and the planting density is 8 plants / square rice.

[0035] During the operation of the system, there is no clogging phenomenon, and the barracuda grows luxuriantly, with large leaves and strong stems. The monitoring results show that the constructed wetland system using this packing bed construction method can still efficiently remove nitrogen, phosphorus, and organic matter at the same time, and the pollutant removal effects are shown in Figure 5 , Figure 6 , Figure 7 , Figure 8 . TN, NH 3 -N, TP, COD Mn The average removal rates were 67.19%, 70.47%, 33.59% and 56.13%. Effluent TN, NH 3 -The content of N and TP has reached the first-class A standard stipulated in the "P...

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Abstract

The invention discloses a method for constructing a vertical-flow constructed wetland packing bed. The method comprises the following step of performing multilayer arrangement on ceramsites, bamboo charcoal, zeolite and limestone, wherein the packing bed sequentially comprises the following components from bottom to top: a ceramsite layer with the height of 24cm, a bamboo charcoal layer with the height of 24cm, a zeolite layer with the height of 24cm and a limestone layer with the height of 16cm; the total height of the packing bed is 88cm; and the volume ratio of the four kinds of packing is 3:3:3:2. According to the method for constructing the vertical-flow constructed wetland packing bed disclosed by the invention, multiple contaminants such as nitrogen, phosphorus and organic matters in small rural domestic sewage can be simultaneously and efficiently removed, the adopted packing is wide in source, low in cost and high in practicability, the packing can be used for removing the contaminants by virtue of the adsorption and precipitation effects and contributes to forming and updating biological membranes, and the removal efficiency of nitrogen, phosphorus and organic matters is improved.

Description

technical field [0001] The invention relates to a constructed wetland, in particular to a method for constructing a filling bed of a vertical flow constructed wetland. Background technique [0002] Constructed wetlands are a composite ecosystem that is artificially configured with filler beds, microorganisms and plants in a certain way. As a new type of sewage treatment technology, it has the advantages of ecology, high efficiency, low operating costs, simple management, and good effluent quality. As the most important part of the constructed wetland, the constructed wetland packing bed plays a major role in the sewage treatment technology of the constructed wetland. The selection of its type, assembly method and height is an important link in the engineering design of the constructed wetland. [0003] A large number of studies have shown that there is no filler in the prior art that can efficiently remove nitrogen, phosphorus, and organic matter. Therefore, for complex dom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
CPCC02F3/327C02F2103/007C02F2301/00C02F2303/20C02F2305/00C02F2305/04Y02W10/10
Inventor 孙庆业杜冰窦智勇程建华韦绪好代宇
Owner ANHUI UNIVERSITY