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Artificial wetland and construction method thereof

A technology of artificial wetlands and construction methods, applied in chemical instruments and methods, aerobic and anaerobic process treatment, sustainable biological treatment, etc., can solve the problems of poor landscape effect, poor oxygenation effect, and low treatment efficiency. , to achieve the effect of improving treatment efficiency and purification effect, good absorption environment and improving treatment efficiency

Active Publication Date: 2011-08-31
中咨城建设计有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also a large number of constructed wetlands constructed and used for production in China. However, in actual operation, since traditional constructed wetland fillers are mainly gravel, sand, etc., due to low porosity and poor oxygenation effect, blockages are prone to occur during long-term operation, and the treatment efficiency Low, poor landscape effects, etc.

Method used

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  • Artificial wetland and construction method thereof
  • Artificial wetland and construction method thereof
  • Artificial wetland and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Fengtang River Water Quality Purification Project, which belongs to the transition zone of fresh and salt water on the seashore, is a kind of salty sewage: 50,000 tons / day;

[0028] Due to its high influent concentration, the project adopts a vertical pool type artificial wetland, and adds a backwashing water system and an aeration system. The specific structure is as figure 1 As shown, a vertical slope 1 is established in the Fengtang River to construct a vertical pool-type artificial wetland, and oyster shells 4 are filled in the wetland pool 3 of the vertical pool-type artificial wetland, with a thickness of 3.5 meters and an area of ​​2600 square meters. Aquatic plants 2 are planted on the oyster shell layer. The planted aquatic plants are: Elephant Grass, Chickweed and Windmill Grass, and the planting density of Elephant Grass is 12 from / m 2 , each from 2 to 3 plants, a backwashing system 6 is provided on the side below the oyster shell layer, and an aeration syst...

Embodiment 2

[0030] Pingshan River water purification project: 6,500 tons / day;

[0031] The construction method of the constructed wetland in this embodiment is basically the same as that in Embodiment 1, except that the thickness of the oyster shell layer is 3.5 meters and the area is 350 square meters. The project has been put into operation, the main indicators are as follows: figure 2 , 3 and 4, from figure 2 , 3 and 4, it can be seen that after the artificial wetland treatment of the present invention, the COD of sewage Cr 、BOD 5 and suspended solids are greatly reduced, showing that the constructed wetland of this embodiment has high treatment efficiency and good treatment effect, and after the constructed wetland of this embodiment is operated, no clogging phenomenon has occurred, aquatic plants grow well on the oyster shell layer, and its root system The oyster shell layer is firmly fixed, and it has a good landscape effect. While purifying the environment, it can also beaut...

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Abstract

The invention discloses an artificial wetland and a construction method thereof. The artificial wetland comprises an artificial wetland pool, a layer of oyster shells serving as a filler are arranged in the artificial wetland pool, and aquatic plants are grown on the oyster shells. Therefore, compared with the artificial wetland taking sand as a filler in the prior art, the artificial wetland has the advantages that: (1) the oyster shells serve as the filler, wastes are utilized, the filler is wide in sources, low in cost and high treatment efficiency, high porosity ensures smooth flowing of water and avoids blockage, and the service life is long; and the artificial wetland is generally dredged once after 2 to 3 years, and about 1 / 3 of oyster shells are replaced, so the operation and management are convenient, the plants are easy to grow and kept, and the plants can be partially harvested according to growth vigor; (2) the artificial wetland has good purification effect without odor, and a few of flies and mosquitoes appear; and (3) the artificial wetland purifies and beautifies environment.

Description

Technical field: [0001] The invention belongs to the field of artificial wetland for purifying urban sewage and saline sewage in environmental ecological engineering, in particular to an artificial wetland for purifying urban sewage and saline sewage and a construction method thereof. Background technique: [0002] Constructed wetland is an ecosystem built by using engineering measures to simulate natural wetlands for wastewater treatment. It is mainly composed of media, plants and microorganisms. It mainly uses the physical, chemical and biological triple synergies of substrate-aquatic plants-microbes in the system. , through matrix filtration, adsorption, precipitation, ion exchange, plant absorption and microbial decomposition to achieve efficient purification of sewage. Plants in constructed wetlands can absorb and enrich pollutants, provide energy, beautify the landscape, and provide habitats for microorganisms, which play an important role. At present, developed count...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34C02F3/30
CPCY02W10/10
Inventor 黄鹄宁天竹郑道才李瑞成任海张倩媚
Owner 中咨城建设计有限公司
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