Plant carbon source based novel composite artificial wetland system and application thereof
A technology of constructed wetland system and plant carbon source, which is applied in the field of deep treatment of nitrogen and phosphorus in low-pollution water in the plant carbon source-based new composite constructed wetland system, which can solve the problems of difficult carbon source supplementation and high cost of constructed wetlands, and reduce operation and maintenance costs , easy management, and the effect of removing COD
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Embodiment 1
[0034] refer to figure 1 As shown, a plant carbon source-based new composite constructed wetland system includes two parts: a constructed wetland filler layer and a plant layer. The filler layer includes a filler bed and drainage pipes. The plant system, in which the filler layer is located at the lower part of the constructed wetland system, only accounts for half of the entire constructed wetland system, of which:
[0035] The packing layer is divided into two parts, and a coarse gravel layer and a zeolite layer are respectively laid from bottom to top as a supporting layer and a main reaction layer. The packing layer from bottom to top is a coarse gravel layer with a filling height of 5cm and a zeolite layer with a filling height of 25cm; the diameter of the coarse gravel is 1-2cm, and the diameter of the zeolite is 4-8mm.
[0036] The water distribution pipe is arranged on the upper part of the plant root system, and the water distribution holes are evenly distributed to ...
Embodiment 2
[0039] Such as figure 2 As shown, a plant carbon source-based new composite constructed wetland system includes two parts: a constructed wetland filler layer and a plant layer. The filler layer includes a filler bed and drainage pipes. plant system.
[0040] The planting density in the plant system is about 300-400 plants / m 2 The yellow calamus used PVC pipe as a plant growth fixer, and the root system was inserted into the small hole at the bottom of the PVC pipe. All the other are with embodiment 1.
[0041] The operating method of the present invention is basically the same as that of Embodiment 1, the difference is that the plant in the plant system is a calamus with short and thick rhizomes, tall plants, and dense leaves, which belongs to emergent perennial herbaceous plants, and the sewage is input from the upper part of the plant carbon source base. Constructed wetland system, the effluent is discharged from the drainage pipe through the U-shaped pipe to the water l...
Embodiment 3
[0043] A method for operating a plant carbon source-based novel composite constructed wetland system, comprising:
[0044] Adopt a kind of plant carbon source base novel composite constructed wetland system of embodiment 1;
[0045] (1) During the start-up period of the system, the anaerobic sludge from the sewage treatment plant is inoculated in the filler layer, which greatly shortens the start-up period of the constructed wetland.
[0046] (2) The Hoagland's solution is introduced into the plant culture system for a certain period of time to maintain the normal growth of the plants.
[0047] (3) Use a peristaltic pump to fill the matrix area with sewage through the water distribution pipeline in the water intake area. The continuous flow operation mode is adopted, and the hydraulic retention time of the constructed wetland is set to 36 hours. A part of the ammonia nitrogen passes through the plant root area and is absorbed by the plant root system as The other part of the ...
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