All-terrain subsurface flow constructed wetland combination system and application thereof
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A constructed wetland and combined system technology, applied in the field of subsurface constructed wetland combined system, can solve problems such as the deterioration of river water quality, and achieve the effects of diversifying redox states, improving the denitrification capacity, and improving the denitrification and phosphorus removal capacity.
Active Publication Date: 2012-07-04
TONGJI UNIV
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However, from the perspective of water quality assurance, if the tail water is discharged into the landscape river as a supplementary water source without advanced treatment, this will further deteriorate the water quality of the already eutrophic river.
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[0032] Below in conjunction with specific embodiment, further illustrate the present invention. An all-terrain subsurface flow artificial wetland combination system for river water restoration, such as figure 1 As shown, it includes wetland unit frames 13, 14, 15, substrates 10, 11, 12, water distribution pipes 1, 3, 5, water collection pipes 2, 4, 6, water inlet pipes 19, connecting pipes 20, 21, water outlet valves 7, Outlet vertical pipe 8, siphon 9.
[0033]The first wetland unit 16 is provided with a wetland unit frame 13, the first wetland unit 16 is filled with a matrix 10, the water inlet pipe 19 is connected to the water distribution pipe 1, the water distribution pipe 1 is arranged on the upper part of the first wetland unit 16, and the water collection pipe 2 is arranged At the bottom of the first wetland unit 16; the second wetland unit 17 is provided with a wetland unit frame 14, the second wetland unit 17 is filled with the matrix 11, the connecting pipe 20 conn...
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Abstract
The invention belongs to the technical field of environmental engineering, and relates to a subsurface flow constructed wetland combination system and the application of the system. The constructed wetland combination system comprises three wetland units (16, 17 and 18), wherein the three wetland units respectively comprise wetland unit frames (13, 14 and 15), water distribution pipes (1, 3 and 5), water collecting pipes (2, 4 and 6), a water inlet pipe (19), connecting pipes (20 and 21), a water outlet valve (7), a vertical water outlet pipe (8) and a siphon (9), wherein the wetland units (16, 17 and 18) are connected with one another by the water collecting pipes (2, 4 and 6) or the water distribution pipes (1, 3 and 5), the wetland units (16, 17 and 18) are internally filled with substrates (10, 11 and 12), and the three wetland units are vertically distributed in a gradually-falling shape. The system and the application of the system provided by the invention have the advantages of being high in the adaptability to terrain, better in nitrogen and phosphorus removal effect for a water body, hard to block, convenient in operation, maintenance and management, low in project capital construction cost and running cost and the like.
Description
technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to an underflow constructed wetland combination system and its application. Background technique [0002] Due to its small footprint and high purification efficiency, subsurface flow constructed wetlands have been widely used in recent years. Subsurface wetlands mainly use wetland substrates, plants and microorganisms to treat polluted water bodies under various physical, chemical and biological effects. The wetland unit is filled with substrates of different particle sizes and varieties, which can absorb and retain suspended solids, ammonia nitrogen, phosphorus, etc. in the water body; various wet plants are planted on the substrate, and the nitrogen, nitrogen, and phosphorus absorbed during plant growth are transferred by harvesting the aboveground parts. Phosphorus, organic matter, heavy metals and other pollutants; microorganisms attached to the surface of the s...
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