Constructed wetland filler and preparation method thereof
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A technology of artificial wetland filler and clinker
Pending Publication Date: 2021-09-07
HUNAN YIJING ENVIRONMENTAL PROTECTION TECH CO LTD
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Abstract
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Problems solved by technology
[0007] Therefore, the technical problem to be solved by the present invention is to overcome the problems of low strength, large particle size, large pore volume and low water purific
Method used
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Embodiment 1
[0042] The raw material components of artificial wetland filler are clinker, construction slag, cementing agent, water, slag, power plant slag, and sepiolite. The weight parts of each material are: clinker 12-25%, construction slag 25 ~35%, caking agent 3~5%, water 8~12%, mineral powder 5~8%, power plant slag 20~30%, sepiolite 5~8%.
Embodiment 2
[0044] The raw material components of artificial wetland filler are clinker, construction slag, cementing agent, water, mineral powder, power plant slag, and quick-drying agent. The weight parts of each material are: clinker 15-25%, construction slag 40% ~60%, strong caking agent 3~5%, water 8~16%, mineral powder 8~15%, power plant slag 8~15%, quick drying agent 5% of clinker weight.
Embodiment 3
[0046] The raw material components of artificial wetland filler are composed of clinker, construction slag, cementing agent, water, mineral powder, floating beads and reinforcing agent, wherein the weight parts of each material are: clinker 12-20%, construction slag 25- 35%, caking agent 3-5%, water 8-12%, mineral powder 10-15%, floating beads 3-6%, reinforcing agent 2% of clinker weight.
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Abstract
The invention discloses a constructed wetland filler which comprises a through hole penetrating through a body. The through hole and the body are coaxially arranged. The peripheral side surface of the body is concave and/or convex. The filler is prepared by mixing and pressing main raw materials including clinker, building slag, a strong caking agent and water according to a ratio. Through the concave and/or convex outer edge of the body, the contact area between the body and the outside is greatly increased, the attachment area of the body is enlarged, the number of microorganisms in unit area is increased, and then the sewage purification capacity of the constructed wetland is improved.
Description
technical field [0001] The invention relates to the technical field of artificial wetlands, in particular to a filler for artificial wetlands and a preparation method thereof. Background technique [0002] In the constructed wetland treatment system, the filler is the substrate and carrier of the constructed wetland. The filler intercepts pollutants through physical filtration, ion exchange, specific and non-specific adsorption, chelation, sedimentation reaction, etc., creating a good environment for further decomposition and absorption of pollutants by microorganisms and plants. conditions, while the filler provides a stable attachment surface for the growth of microorganisms. In the design and selection of fillers, in order to meet their functions as biofilm carriers, it is generally necessary to consider the physical and chemical composition, porosity and specific surface area, mechanical strength, space volume and shape, biological, chemical and thermodynamic stability ...
Claims
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Application Information
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IPC IPC(8): C02F3/34C02F3/32C04B28/00
CPCC02F3/34C02F3/32C04B28/00
Inventor 李强秦裕淞李荣祥李依然范宙
Owner HUNAN YIJING ENVIRONMENTAL PROTECTION TECH CO LTD
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