Nitrogen and phosphorus removal composite filler and purification device containing same
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A composite filler, nitrogen and phosphorus removal technology, applied in the field of water treatment, can solve the problems of system blockage, short service life, difficult to achieve stable total nitrogen removal rate, etc., to achieve the effect of removing pollutants
Pending Publication Date: 2022-04-19
江鹰
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Problems solved by technology
However, most natural cellulose materials have low mechanical strength and short service life
Since the plant carrier may block the system after the release period is over, it is generally necessary to set up a separate dosing area for future maintenance and operation. Therefore, if the life of the filler is too short and the mechanical strength is insufficient, the cost and difficulty of operation and maintenance will increase.
In addition, the total nitrogen removal rate of pure cellulose carbon source materials is difficult to reach more than 70% in practical applications, and the nitrogen removal effect needs to be improved.
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Embodiment 1
[0049] A nitrogen and phosphorus removal composite filler, including: lignocellulose, metal substances, oligosaccharides and biological enzymes; usually, metal substances are distributed in the center of the nitrogen and phosphorus removal composite filler. The composite filler can be prepared into square fillers and spherical fillers according to actual use requirements.
[0050] The square packing includes: a cubic shell and a composite packing for nitrogen and phosphorus removal filled in the cubic shell; the cubic shell has holes.
[0051] The spherical filler includes: a spherical shell and a composite filler for nitrogen and phosphorus removal filled in the spherical shell; the spherical shell has holes, that is, it is hollowed out as a whole.
[0052] Among them, the role of lignocellulose is: as a slow-release carbon source and a membrane carrier, it can release organic matter as an electron donor for denitrification by denitrifying bacteria under the soaking of water ...
Embodiment 2
[0057] This embodiment is a further optimization carried out on the basis of embodiment 1, which is specifically:
[0058] The ratio of lignocellulose, metal substances, oligosaccharides and biological enzymes is 100:(50-4):(0.1-2.5):(0.005-0.02).
Embodiment 3
[0060] This embodiment is a further optimization carried out on the basis of embodiment 1 or 2, which is specifically:
[0061] Lignocellulose is the main component of plant cell walls, lignocellulose includes: cellulose, hemicellulose and lignin;
[0062] The proportion of cellulose, hemicellulose and lignin is (3-6): (2-5): (1-3);
[0064] Among them, wood includes rotten wood, and products or waste produced from raw wood;
[0065] Bamboo is a product or waste processed from raw bamboo;
[0066] Wheat stalks, corn stalks, corn cobs, bagasse, etc. are agricultural wastes;
[0067] The shape of the lignocellulose can be: fine powder, granular, filamentary, massive and other shapes.
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Abstract
The invention relates to a nitrogen and phosphorus removal composite filler which comprises lignocellulose, a metal substance, oligosaccharide and a biological enzyme. The invention relates to a purification device which comprises a treatment tank and a composite filler, wherein the composite filler is applied to a suspended type or a fixed type in a purification tank. When the composite filler is suspended, the composite filler can be prepared into a spherical shape; when the composite filler is fixed, the composite filler can be prepared into a square shape. Lignocellulose is used as a slow-release carbon source and a biofilm formation carrier, provides a carbon source as an electron donor for denitrification of denitrifying bacteria, reduces nitrate nitrogen into nitrogen, and realizes sewage denitrification; metal substances can reduce the oxidation-reduction potential of a water body so as to facilitate survival of denitrifying bacteria, stimulate microbial evolution to increase the diversity, strengthen microbial aggregation to increase the biomass and improve the biodegradability, and phosphorus in sewage can be removed through adsorption and precipitation of metal ions; the nitrogen and phosphorus removal composite filler is mainly used for efficient nitrogen removal of domestic sewage, river and lake water bodies, aquaculture wastewater and the like, and has a certain phosphorus removal function.
Description
technical field [0001] The invention relates to the technical field of water treatment, in particular to a nitrogen and phosphorus removal composite filler and a purification device containing the same. Background technique [0002] Nitrogen pollution is one of the most serious problems faced by various water bodies in my country. my country's current highest total nitrogen discharge standard is Class A (GB18918-2002), but the Class A total nitrogen limit (≤15mg / L) is the surface water Class IV (total nitrogen ≤ 1.5mg / L), its secondary pollution to the water body cannot be ignored, especially when the discharged water body is a closed water body, it is even more difficult to meet the water quality requirements, so economical and efficient deep denitrification is urgently needed technology. In addition, with the continuous development of my country's economy, the increase in the use of nitrogen and phosphorus substances, and the use of a large number of agricultural chemical f...
Claims
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Application Information
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