Suspended filler for removing nitrogen and phosphorus

Abstract

The utility model relates to the technical field of water pollution treatment, in particular to nitrogen and phosphorus removal suspended filler which comprises an outer frame and filler, the outer frame is a hollow net shell, the filler is located in the outer frame and comprises main filler and a floating body, the outer side of the main filler is wrapped by a microporous filter bag, and the floating body is located in the outer frame. The main body filler and the floating body designed in the scheme are matched with each other to float in water, countless tiny primary batteries and metal ions generated by metal losing electrons are just formed in water by matching with materials in the main body filler, the metal ions have certain dephosphorization potential, and dissolved phosphorus in water continuously penetrates through the microporous filter bag to be in contact with the main body filler, so that the phosphorus removal effect is improved. The filler designed in the scheme is combined with a microbial aerobic biological membrane treatment technology, so that the nitrogen and phosphorus removal effect is achieved at the same time, and the problem that the total phosphorus removal rate of aerobic biological membrane reaction is low is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water body pollution treatment technical field, concretely is a kind of denitrification and phosphorus removal suspended filler. BACKGROUND

[0002] Small and micro water body is poor in fluidity, weak in self-purification ability, small in scale, numerous in quantity and widely distributed. With the increasing pollution sources in suburban and rural production and life, small and micro water body is under heavy burden, and excessive content of nutrients such as nitrogen and phosphorus in water body is the main cause of deterioration of water quality of small and micro water body.

[0003] The prevailing biological and ecological restoration reduces ammonia nitrogen in water body through microbial degradation and absorption, transfer of aquatic plants or filtration and adsorption of ecological floating bed and filter bed.

[0004] In biological phosphorus removal technology, the system combining denitrification and phosphorus removal is not conducive to phosphorus removal, because denitrification and phosphorus removal are a pair of irreconcilable contradictions. For example, in the process of aerobic biofilm reaction, too high dissolved oxygen limits denitrification, and high concentration of nitrate nitrogen can affect the release of phosphorus. Because the release of phosphorus is best in anaerobic environment, the presence of nitrate nitrogen indicates that it can only be in a facultative environment; therefore, it is urgent to develop a technology that can efficiently remove phosphorus in aerobic environment. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a kind of denitrification and phosphorus removal suspended filler to solve the problem that existing phosphorus removal and denitrification are not easy to handle simultaneously.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of denitrification and phosphorus removal suspended filler, including outer frame body and filler, the outer frame body is hollow net shell body, the filler is in outer frame body, and the filler includes main body filler and float.

[0008] Preferably, the outer side of the main body filler is wrapped by a microporous filter bag.

[0009] Preferably, the main body filler has a rough surface structure, such as a concave-convex structure.

[0010] Preferably, the main body filler (3) is iron filings of 2-5 mm.

[0011] Preferably, the float is provided with a cavity, and the float is provided with a through port, and a partition is fixed in the through port.

[0012] Preferably, the outer frame body and the float are made of plastic.

[0013] Preferably, the outer frame body is spherical.

[0014] Preferably, the floating body is made by a blow molding process.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The main filler and the floating body are cooperated with each other to float in water, and the material in the main filler and the structure thereof form numerous tiny primary cells in water, metal loses electrons to generate metal ions, the metal ions have certain phosphorus removal potential, the dissolved phosphorus in water continuously contacts the main filler through the microporous filter bag, the dissolved phosphorus in water is removed, the filler and the microbial aerobic biofilm treatment technology are combined to have the effects of denitrification and phosphorus removal, and the problem of low total phosphorus removal rate of the aerobic biofilm reaction is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 It is a floating body structure schematic view of the utility model.

[0020] In the drawings, the component list represented by each sign is as follows: 1, outer frame body; 2, filler; 3, main filler; 4, floating body; 5, through port; 6, partition. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] As shown in Figure 1 - Figure 3 The denitrification and phosphorus removal suspended filler in the drawing includes an outer frame body 1 and a filler 2, the outer frame body 1 is a hollow net shell body, the filler 2 is in the outer frame body 1, and the filler 2 includes a main filler 3 and a floating body 4.

[0023] Specifically, the floating body 4 keeps the device floating in water, and the dissolved phosphorus in water continuously contacts the main filler 3, so that the dissolved phosphorus in water is removed.

[0024] It should be further explained that the main filler 3 is composed of graphite, cementite (Fe3C) and / or other metals and impurities, and in water, a large number of micro primary cells are formed by iron and a small amount of carbon, metal loses electrons to generate metal ions, and the metal ions themselves have a certain phosphorus removal potential. If the cementite substrate with a certain phosphorus removal capacity is combined with the aerobic biological membrane treatment technology, it will have the effects of denitrification and phosphorus removal, and the problem of low total phosphorus removal rate of the aerobic biological membrane reaction will be solved.

[0025] Further, referring to Figure 3 , the floating body 4 is provided with a cavity, and the floating body 4 is provided with a through port 5, and the through port 5 is fixed with a partition plate 6.

[0026] In a specific embodiment, the partition plate 6 has a plurality, such as Figure 3 As shown, three partition plates 6 are provided. The cavity of the floating body 4 is designed to have a certain buoyancy in water, and the through port 5 and the partition plate 6 are designed to realize a multi-channel high surface area structure, which can enhance the interface mass transfer rate and make the substances in it mix uniformly.

[0027] Further, in the present scheme, the outer frame body 1 and the floating body 4 are made of plastic material, which is light in weight, cheap, has good toughness, impact resistance and is not easy to break, can be made into a thin-walled structure, and is convenient for floating in water.

[0028] In the present scheme, the outer frame body 1 and the floating body 4 are both spherical, and the spherical structure design makes it more smooth to turn in water, so as to be more fully contacted with the liquid.

[0029] Among them, the floating body 4 is made by blow molding process. In preparation, gas is first introduced into the inside and then heated in the mold to make it into a molten state, and finally cooled into a solid state. The hollow inside provides buoyancy for the overall filler.

[0030] In the present scheme, the main filler 3 can control the single gram weight of 20-120 grams according to the pollution degree of wastewater.

[0031] The main filler 3 can be obtained by 3D printing. The main filler 3 needs to realize the surface concave-convex microstructure. The structure model of the main filler 3 is constructed by 3D modeling, and then the 3D printing technology is used to print the main filler with surface concave-convex microstructure, such as rough spherical surface, which is put into the outer frame body 1. The rough surface is more likely to form a micro-electrolytic cell to release metal ions to remove phosphorus elements. At the same time, under the action of water flow shear force, the deposited phosphorus-containing metal generated by the surface concave-convex microstructure falls off, and the iron phosphate and other deposits are collected through the recovery tank to achieve the goal of removing total phosphorus.

[0032] In some preferred embodiments, the main filler 3 can be selected as a finished material, which is put into the outer frame 1 through a microporous filter bag, and the shape of the finished material needs to be integrally formed through a mold. Specifically, the finished material can be selected as iron cutting waste, which is processed into iron filings with a size of 2-5 mm, and then wrapped with a microporous filter bag.

[0033] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A denitrifying and phosphorus-removing suspended filler, characterized by, The application relates to an outer frame (1) and a filler (2), the outer frame (1) is a hollow net shell, the filler (2) is arranged in the outer frame (1), and the filler (2) comprises a main body filler (3) and a floating body (4).

2. The denitrifying and phosphorus removing suspended filler according to claim 1, characterized in that: The main body filler (3) is wrapped by a microporous filter bag.

3. The denitrifying and phosphorus removing suspended filler according to claim 1, characterized in that: The main body filler (3) has a rough surface structure.

4. The denitrifying dephosphorizing suspended fill material according to claim 3, characterized in that: The rough structure is a concave-convex structure.

5. The denitrifying dephosphorizing suspended fill material according to claim 1, characterized in that: The main body filler (3) is iron filings with a size of 2-5 mm.

6. The denitrifying dephosphorizing suspended fill material according to claim 1, characterized in that: The floating body (4) is provided with a cavity, and the floating body (4) is provided with a through opening (5), and a partition plate (6) is fixed in the through opening (5).

7. The denitrifying dephosphorizing suspended fill material according to claim 1, characterized in that: The outer frame (1) and the floating body (4) are made of plastic.

8. The denitrifying dephosphorizing suspended fill material according to claim 1, characterized in that: The outer frame (1) is spherical.

9. The denitrifying dephosphorizing suspended fill material according to claim 1, characterized in that: The floating body (4) is made by a blow molding process.

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