Suspended filler with self-cleaning function

Abstract

The invention discloses a suspended filler with a self-cleaning function, which comprises a sphere, the sphere comprises an upper hemisphere and a lower hemisphere, the upper hemisphere and the lower hemisphere are detachably connected, the sphere comprises the following raw materials by mass fraction: 68.8%-69.8% of polyethylene, 19.0%-19.5% of ethylene and vinyl acetate copolymer, 5.0%-6.0% of calcium sulfate, 2.0%-2.5% of calcium carbonate, and the balance of water. The paint comprises the following components in percentage by weight: 1.5%-2.5% of diatomite, 1.6%-2.0% of diatomite, 0.8%-1.2% of activated carbon, 0.7%- The shell of the suspended filler is not only a loading body, but also can be used as a microbial carrier, is easy to fall off after reaching a certain thickness, and does not block holes or affect the effect of the spongy filler as the microbial carrier.

Description

Technical Field

[0001] The invention relates to the field of fillers, and in particular to a suspended filler with a self-cleaning function. Background Art

[0002] The rapid development of modern industrial technology has brought great convenience to people, but at the same time, the environment has been deteriorating. In view of the increasingly serious environmental problems, it is imperative to strengthen sewage treatment and improve emission standards.

[0003] In the biological contact oxidation water treatment process, a variety of suspended fillers have been developed for sewage treatment, but most of them are made of plastic injection molding. However, their surfaces are smooth and they only serve to load the internal sponge-like fillers. It is difficult for microorganisms to attach to them and form a film.

[0004] The Chinese authorized patent document with patent number "CN205500896U" discloses a suspended filler for wastewater treatment, in which the outer shell only plays a bearing role. Summary of the invention

[0005] The object of the present invention is to provide a suspended filler with a self-cleaning function.

[0006] The innovation of the present invention is that the shell of the suspended filler is not only a carrier, but also can be used as a microbial carrier. Moreover, after reaching a certain thickness, it is easy to fall off and will not block the holes, thus affecting the function of the internal sponge filler as a microbial carrier.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is:

[0008] A suspended filler with a self-cleaning function comprises a sphere, wherein the sphere comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere and the lower hemisphere are detachably connected, and wherein the sphere comprises the following raw materials in mass fraction: 68.8%-69.8% polyethylene, 19.0%-19.5% ethylene and vinyl acetate copolymer, 5.0%-6.0% calcium sulfate, 2.0%-2.5% calcium carbonate, 1.6%-2.0% diatomaceous earth, 0.8%-1.2% activated carbon, 0.7%-0.8% colorant, and 0.1%-0.2% antioxidant.

[0009] Furthermore, the polyethylene is linear low-density polyethylene.

[0010] Furthermore, the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 5%-30%.

[0011] Furthermore, the activated carbon powder is composed of a mixture of wood activated carbon powder and coal activated carbon powder, and the weight ratio of the wood activated carbon powder to the coal activated carbon powder is 5 to 10:1.

[0012] Furthermore, the colorant is carbon black, red iron oxide, cyan iron blue, red iron blue or brown iron oxide.

[0013] Furthermore, the antioxidant is at least one of butylated hydroxyanisole, butylated hydroxytoluene, and tert-butylhydroquinone.

[0014] Furthermore, a first fixing chuck is provided on the outer surface of the upper hemisphere, and a second fixing chuck is provided on the outer surface of the lower hemisphere, the first fixing chuck and the second fixing chuck are fixedly connected by a hexagonal screw, the upper end surface of the first fixing chuck is fixedly connected to a blade structure by a screw, a bending portion is provided at the middle portion of the blade structure, the upper end surface of the blade structure is coated with a first smooth coating structure, the lower end surface of the blade structure is coated with a second smooth coating structure, and the surface of the blade structure is provided with a streamlined curved surface structure.

[0015] Furthermore, a first threaded slot is provided on the surface of the blade structure, and a second threaded slot is provided on the surfaces of the first fixing chuck and the second fixing chuck.

[0016] Furthermore, the bending portion is a bendable and deformable soft metal structure made of copper or aluminum; the surfaces of the upper hemisphere and the lower hemisphere are both provided with honeycomb slot structures, and microbial sponge block fillers are placed inside the upper hemisphere and the lower hemisphere.

[0017] Furthermore, the method for preparing the sphere comprises the following steps:

[0018] (1) taking materials according to the formula and mixing them evenly to obtain a premix;

[0019] (2) heating the premix to a molten state to obtain a molten material;

[0020] (3) The molten material is pressed into shape through a mold.

[0021] The beneficial effects of the present invention are:

[0022] 1. The shell of the suspended filler in the present invention is not only a carrier, but also can be used as a microbial carrier. Moreover, it is easy to fall off after reaching a certain thickness, and will not block the holes and affect the role of the internal sponge filler as a microbial carrier.

[0023] 2. In the present invention, linear low-density polyethylene with a density of 0.918 to 0.935 g / cm 3The main skeleton material is ethylene-vinyl acetate copolymer, with a density of 0.935-0.947 g / cm 3 As auxiliary skeleton material, it can adjust the density of suspension to 0.96~0.97g / cm 3 , which is lower than the density of water. During the application process, when microorganisms are attached to the suspended filler, its density is still lower than that of water. Under the action of stirring or aeration, it can be suspended in water and has excellent fluidity. Since linear low-density polyethylene is used as the main skeleton material, the surface tension is low. When the microorganisms attached to the suspended filler reach a certain thickness, they are easy to fall off from the surface of the suspended filler, giving the suspended filler a self-cleaning effect. Using ethylene-vinyl acetate copolymer as the auxiliary skeleton material not only gives excellent bonding properties during processing, enhances the mechanical strength of the self-cleaning biological filler, and achieves a durable effect, but also significantly increases the bonding and hydrophilicity between the suspended fillers.

[0024] 3. The inorganic chemicals added in the present invention, including calcium sulfate, calcium carbonate and diatomaceous earth, significantly increase the hydrophilicity of the suspended filler, which is conducive to the aggregation of microorganisms.

[0025] 4. The addition of antioxidants in the present invention greatly improves the anti-aging and anti-oxidation properties of the suspended filler and prolongs the service life of the self-cleaning suspended filler.

[0026] 5. The suspended filler prepared by mixing the components and their synergistic effects enhances the hydrophilicity of the biological filler. During use, the suspended filler and sewage can be in close contact, and the activated sludge can easily adhere to the surface of the suspended filler, thereby enhancing the use effect of the filler.

[0027] 6. In the present invention, multiple blade structures are installed on the outside of the suspended ball filler structure, and the blades are protected by a multifunctional design, so that the suspended ball filler can rotate better during aeration, and the biological layer on the internal sponge block can be quickly removed, which has the advantages of good degradation effect and high sewage purification efficiency.

[0028] 7. In the present invention, a bending portion is provided at the middle part of the blade structure, and the inclination angle of the blade is adjusted by manually bending the bending portion to optimize the rotation effect of the blade.

[0029] 8. In the present invention, by providing a smooth coating structure on the outer surfaces of both sides of the blade structure, the friction between the blade structure and the water flow during rotation can be effectively reduced, thereby achieving the effect of accelerating the rotation speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the overall front view of the present invention;

[0031] Figure 2It is a structural schematic diagram of the blade connection of the present invention;

[0032] Figure 3 It is a schematic diagram of the external structure of the blade structure of the present invention;

[0033] Figure 4 It is a schematic diagram of the internal structure of the blade structure of the present invention;

[0034] Figure 5 It is a schematic diagram of the side structure of the blade structure of the present invention. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0036] Embodiment 1: A suspended filler with a self-cleaning function, comprising a sphere, the sphere comprising an upper hemisphere 2 and a lower hemisphere 6, the upper hemisphere 2 and the lower hemisphere 6 are detachably connected, microbial sponge block fillers are placed inside the upper hemisphere 2 and the lower hemisphere 6, and honeycomb slot structures 1 are provided on the surfaces of the upper hemisphere 2 and the lower hemisphere 6. A first fixing chuck 4 is provided on the outer surface of the upper hemisphere 2, and a second fixing chuck 5 is provided on the outer surface of the lower hemisphere 6. The first fixing chuck 4 and the second fixing chuck 5 are fixedly connected by hexagonal screws 3, and a blade structure 7 is fixedly connected to the upper end surface of the first fixing chuck 4 by screws, and a bending portion 9 is provided at the middle portion of the blade structure 7, and the bending portion 9 is a soft metal structure made of copper or aluminum that can be bent and deformed. The upper surface of the blade structure 7 is coated with a first smooth coating structure 10, the lower surface of the blade structure 7 is coated with a second smooth coating structure 12, and the surface of the blade structure 7 is provided with a streamlined curved surface structure 11; the surface of the blade structure 7 is provided with a first threaded slot 13, and the surfaces of the first fixing chuck 4 and the second fixing chuck 5 are provided with a second threaded slot 8. There are multiple blade structures 7, and the installation position of the blade structure 7 is adjusted and set according to the position of the second threaded slot 8.

[0037] The sphere includes the following raw materials in mass fractions: polyethylene 68.8%, ethylene and vinyl acetate copolymer 19.5%, calcium sulfate 6.0%, calcium carbonate 2.5%, diatomaceous earth 1.6%, activated carbon 0.8%, colorant 0.7%, and antioxidant 0.1%.

[0038] The polyethylene is linear low density polyethylene.

[0039] The content of vinyl acetate in the ethylene and vinyl acetate copolymer is 5%.

[0040] The activated carbon powder is a mixture of wood activated carbon powder and coal activated carbon powder, and the weight ratio of the wood activated carbon powder to the coal activated carbon powder is 5:1.

[0041] The colorant is carbon black.

[0042] The antioxidant is butylated hydroxyanisole.

[0043] When the sphere is made, materials are taken according to a formula and mixed evenly to obtain a premix; the premix is ​​heated to a molten state to obtain a molten material; and the molten material is pressed into shape by a mold.

[0044] Example 2: Referring to Example 1, the sphere includes the following raw materials in mass fractions: polyethylene 69.8%, ethylene and vinyl acetate copolymer 19%, calcium sulfate 5%, calcium carbonate 2%, diatomaceous earth 2%, activated carbon 1.2%, colorant 0.8%, and antioxidant 0.2%.

[0045] The polyethylene is linear low density polyethylene.

[0046] The content of vinyl acetate in the copolymer of ethylene and vinyl acetate is 10%.

[0047] The activated carbon powder is a mixture of wood activated carbon powder and coal activated carbon powder, and the weight ratio of the wood activated carbon powder to the coal activated carbon powder is 8:1.

[0048] The colorant is red iron oxide.

[0049] The antioxidant is butylated hydroxytoluene.

[0050] Example 3: Referring to Example 1, the sphere includes the following raw materials in mass fractions: polyethylene 68.9%, ethylene and vinyl acetate copolymer 19.42%, calcium sulfate 5.2%, calcium carbonate 2.45%, diatomaceous earth 1.95%, activated carbon 1.18%, colorant 0.75%, and antioxidant 0.15%.

[0051] The polyethylene is linear low density polyethylene.

[0052] The content of vinyl acetate in the ethylene and vinyl acetate copolymer is 30%.

[0053] The activated carbon powder is a mixture of wood activated carbon powder and coal activated carbon powder, and the weight ratio of the wood activated carbon powder to the coal activated carbon powder is 10:1.

[0054] The pigment is cyan iron blue.

[0055] The antioxidant is tert-butylhydroquinone.

[0056] Example 4: Referring to Example 1, the colorant is iron oxide brown.

[0057] The antioxidant is at least one of butylated hydroxyanisole, butylated hydroxytoluene and tert-butylhydroquinone.

[0058] The comparison of the experimental results of the suspended fillers in Examples 1 to 3 and other fillers in treating domestic sewage is shown in Table 1.

[0059] Table 1

[0060]

[0061] It can be seen from Table 1 that the COD removal rate and ammonia nitrogen removal rate of the filler of the present invention are significantly higher than those of other fillers.

[0062] The comparison of the biodiversity index of domestic sewage samples treated by the suspended fillers of Examples 1 to 3 and other fillers is shown in Table 2.

[0063] Table 2

[0064] sample shannon Chao PVC spherical packing 4.23 836.42 Polyurethane square packing 4.82 941.15 Example 1 Filler 4.96 994.27 Example 2 Filler 4.95 996.36 Example 3 Filler 4.97 995.68

[0065] The Chao index can reflect the abundance of the community, and the larger the value, the higher the species abundance. The Shannon index can reflect the diversity of the community, and the larger the value, the higher the diversity. The Chao and Shannon indexes of the filler of the present invention are the highest, indicating that the diversity and abundance of microbial species attached to the biofilm of the filler of the present invention are the highest.

[0066] The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A suspended filler with a self-cleaning function, comprising a sphere, wherein the sphere comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere and the lower hemisphere are detachably connected, characterized in that: The sphere comprises the following raw materials in mass fractions: 68.8%-69.8% polyethylene, 19.0%-19.5% ethylene and vinyl acetate copolymer, 5.0%-6.0% calcium sulfate, 2.0%-2.5% calcium carbonate, 1.6%-2.0% diatomaceous earth, 0.8%-1.2% activated carbon, 0.7%-0.8% colorant, and 0.1%-0.2% antioxidant.

2. The suspended filler with self-cleaning function according to claim 1, characterized in that: The polyethylene is linear low density polyethylene.

3. The suspended filler with self-cleaning function according to claim 1, characterized in that: The content of vinyl acetate in the ethylene and vinyl acetate copolymer is 5%-30%.

4. The suspended filler with self-cleaning function according to claim 1, characterized in that: The activated carbon powder is composed of a mixture of wood activated carbon powder and coal activated carbon powder, and the weight ratio of the wood activated carbon powder to the coal activated carbon powder is 5 to 10:

1.

5. The suspended filler with self-cleaning function according to claim 1, characterized in that: The colorant is carbon black, red iron oxide, cyan iron blue, red iron blue or iron oxide brown.

6. The suspended filler with self-cleaning function according to claim 1, characterized in that: The antioxidant is at least one of butylated hydroxyanisole, butylated hydroxytoluene and tert-butylhydroquinone.

7. The suspended filler with self-cleaning function according to claim 1, characterized in that: A first fixing chuck is provided on the outer surface of the upper hemisphere, and a second fixing chuck is provided on the outer surface of the lower hemisphere. The first fixing chuck and the second fixing chuck are fixedly connected by a hexagonal screw. A blade structure is fixedly connected to the upper end surface of the first fixing chuck by a screw. A bending portion is provided at the middle portion of the blade structure. The upper end surface of the blade structure is coated with a first smooth coating structure, and the lower end surface of the blade structure is coated with a second smooth coating structure. The surface of the blade structure is provided with a streamlined curved surface structure.

8. The suspended filler with self-cleaning function according to claim 7, characterized in that: The surface of the blade structure is provided with a first threaded slot hole, and the surfaces of the first fixing chuck and the second fixing chuck are provided with a second threaded slot hole.

9. The suspended filler with self-cleaning function according to claim 7, characterized in that: The bending part is a bendable and deformable soft metal structure made of copper or aluminum; the surfaces of the upper hemisphere and the lower hemisphere are both provided with honeycomb slot structures, and microbial sponge block fillers are placed inside the upper hemisphere and the lower hemisphere.

10. The suspended filler with self-cleaning function according to claim 1, characterized in that: The preparation method of the sphere comprises the following steps: (1) taking materials according to the formula and mixing them evenly to obtain a premix; (2) heating the premix to a molten state to obtain a molten material; (3) The molten material is pressed into shape through a mold.

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