CN116790056A - High-density suspension carrier for mariculture wastewater treatment and preparation method thereof - Google Patents
High-density suspension carrier for mariculture wastewater treatment and preparation method thereof Download PDFInfo
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- 239000000725 suspension Substances 0.000 title claims abstract description 55
- 238000009364 mariculture Methods 0.000 title claims abstract description 17
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 51
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 49
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 26
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 22
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 22
- 239000011787 zinc oxide Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 18
- 239000010428 baryte Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 8
- 230000003746 surface roughness Effects 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 14
- 239000002351 wastewater Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 239000013535 sea water Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005243 fluidization Methods 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 abstract description 2
- 239000013067 intermediate product Substances 0.000 abstract 1
- 231100000331 toxic Toxicity 0.000 abstract 1
- 230000002588 toxic effect Effects 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000006213 oxygenation reaction Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000512259 Ascophyllum nodosum Species 0.000 description 1
- 230000005653 Brownian motion process Effects 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000251511 Holothuroidea Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229940095674 pellet product Drugs 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/104—Granular carriers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/108—Immobilising gels, polymers or the like
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Medicinal Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
A high-density suspension carrier for mariculture wastewater treatment and a preparation method thereof are provided, wherein the suspension carrier comprises the following substances in parts by weight: 398-402 parts of high-density polyethylene; 1 to 3 parts of silicon dioxide, 1 to 2 parts of zinc oxide, 2 to 5 parts of magnetite and 3 to 4 parts of barite, and the density of a suspension carrier is 1010 to 1050kg/m 3 Surface roughness gradeIT8 to IT10; the preparation method comprises the following steps: the components are uniformly mixed and then heated and processed into mixture particles by a granulator, the mixture particles are conveyed to an extruder, and the mixture particles are extruded and molded after being heated. The suspension carrier of the invention has higher density than the conventional suspension carrier, can suspend in seawater, realizes good fluidization effect, has good hydrophilic property and stable chemical property, can not generate new toxic and harmful intermediate products in the sewage treatment process, has larger porosity and larger specific surface area, and has high mass transfer efficiency.
Description
Technical Field
The invention relates to a suspension carrier for mariculture wastewater treatment and a preparation method thereof, belonging to the technical field of wastewater treatment suspension carriers.
Background
Mariculture is a production activity of cultivating marine aquatic economic animals and plants by using coastal shoal lands. In the process of mariculture, accumulated ammonia nitrogen, nitrite nitrogen and the like are continuously generated due to aquatic organism feces, residual baits and the like, so that the quality of the seawater body is continuously deteriorated and finally the seawater culture wastewater is formed. The existing method for treating the mariculture wastewater is high in cost, and the microbial agent or the tablet is required to be repeatedly added to avoid the loss of microorganisms in the water changing process, so that the safety and the efficiency cannot be ensured, and secondary pollution to the environment is easy to cause.
The moving bed biomembrane method is used as a high-efficiency wastewater treatment method, has good adaptability to the change of the water quality and the water quantity of wastewater, is simple in operation management, and can avoid the loss of microorganisms in the water changing process.
The method of adding the suspension carrier can lead the organic pollutants and microorganisms suspended in the liquid phase to move and attach to the surface of the carrier, then the microorganisms attached to the carrier degrade the organic pollutants and generate processes of metabolism, growth, reproduction and the like, and finally a layer of mature biological film which completely wraps the carrier is formed, thereby realizing the enrichment of water treatment microorganisms and finally completing the purification of the water quality of the wastewater through the action of the microorganisms.
At present, the moving bed biomembrane method can be directly applied to the treatment of the freshwater aquaculture wastewater, but the effective treatment of the seawater aquaculture wastewater is difficult to realize by using the method.
The traditional water treatment suspension carrier is mostly composed of single HDPE material, so the specific gravity is lower, the water treatment suspension carrier is closer to water, and the density is generally 940-980 kg/m 3 Is suitable for the density of clear water, and the seawater has high salt content and density of 1020-1070 kg/m 3 The traditional suspended carrier floats in the seawater, so that good fluidization cannot be realized, the treatment result cannot reach an ideal degree, and the method is difficult to be applied to the treatment of the mariculture wastewater.
Disclosure of Invention
Aiming at the defects of the existing suspension carrier, the invention provides the high-density suspension carrier for treating the seawater culture wastewater, which has large specific surface area, is beneficial to the adhesion growth of microorganisms in the suspension carrier, improves the film forming speed, realizes the efficient starting and stable operation of a seawater wastewater treatment system, and simultaneously provides the preparation method of the suspension carrier.
The invention relates to a high-density suspension carrier for mariculture wastewater treatment, which comprises the following substances in parts by weight:
398-402 parts of high-density polyethylene; 1-3 parts of silicon dioxide, 1-2 parts of zinc oxide, 2-5 parts of magnetite and 3-4 parts of barite.
The density of the high-density suspension carrier is 1010-1050 kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The surface roughness grade is IT 8-IT 10.
High Density Polyethylene (HDPE) as the main material, white granular product, non-toxic, odorless, and having a density of 0.955g/cm 3 The crystallinity is 80-90%, the softening point is 125-135 ℃, and the use temperature can reach 100 ℃.
Silica is a white powdery product with stable chemical properties and a density of 2.2g/cm 3 . The silicon dioxide is used as an excellent hydrophilic material, has stable chemical property, small particle size of silicon dioxide powder, multiple micropores, large specific surface area, strong adsorption capacity, large surface energy and high chemical purity, is more suitable for being added into a raw material of a suspension carrier, and enhances the hydrophilicity and biocompatibility of the suspension carrier. The metal oxide is preferably zinc oxide, and is white powder product with density of 5.6g/cm 3 。
Zinc oxide is used as a metal oxide, has relatively stable chemical properties, has moderate density and electricity in various metal oxides, can effectively improve the density of a suspension carrier without affecting the properties of suspension fillers, provides weak positive electricity for the suspension carrier, adsorbs negatively charged microorganisms in seawater more quickly, and improves the film forming speed and the system starting time.
Magnetite as a heavy material, black pellet product with a density of 4.8g/cm 3 The specific gravity of the prepared suspension carrier can be adjusted.
Barite as one kind of heavy material, white orthorhombic crystal product with density of 4.4g/cm 3 The specific gravity of the prepared suspension carrier can be adjusted.
The suspension carrier is preferably selected from high-density polyethylene (HDPE) as a main component, and the hydrophilicity of the suspension carrier can be improved by matching with quartz sand, so that the suspension carrier can realize good fluidization effect in seawater. Because the existence of hydrodynamic force or simple Brownian motion or motion of bacteria can enable bacteria attached to the surface of the carrier to return to the suspension phase, the suspension carrier can be provided with weak positive electricity by selecting metal oxide (zinc oxide) to adsorb microorganisms with negative charges, thereby being beneficial to the attachment of microorganisms to the suspension carrier, realizing the enrichment of microorganisms on the suspension carrier and completing the quick start of the seawater wastewater treatment system. Magnetite and barite are used for regulating specific gravity of prepared suspension carrier to make its density be 1010～1050kg/m 3 So as to better realize suspension in the seawater and more fully contact with the seawater, thereby obtaining better water quality treatment effect.
The preparation method of the suspension carrier comprises the following steps:
(1) Weighing 398-402 parts by weight of high-density polyethylene respectively; 1-3 parts of silicon dioxide, 1-2 parts of zinc oxide, 2-5 parts of magnetite and 3-4 parts of barite;
a part(s); crushing silicon dioxide, zinc oxide, magnetite and barite into powder;
(2) Uniformly mixing silicon dioxide powder and zinc oxide powder;
(3) Adding magnetite powder and barite powder, and regulating the density to 1010-1050 kg/m 3 ；
(4) Adding high-density polyethylene, and uniformly mixing to form a mixture of the high-density polyethylene, silicon dioxide, zinc oxide, magnetite and barite powder;
(5) Heating and processing the mixture into mixture particles by a granulator;
(6) The mixture particles are conveyed to an extruder, heated, extruded and molded, cooled and cut into pieces (cut according to the required length).
The fineness of the silicon dioxide powder, the zinc oxide powder, the magnetite powder and the barite powder in the step (1) is more than 200 meshes.
The heating temperature in the step (5) is 210-220 ℃.
The heating temperature in the step (6) is 110-120 ℃.
The suspension carrier prepared by the invention has the following characteristics:
1. the surface is rough, the roughness grade is IT 8-IT 10, the uniformity is high, the contact area of microorganisms and a suspension carrier is increased, meanwhile, the rough part can prevent the microorganisms from falling off due to the scouring action of water flow shearing force, the microorganisms are easy to grow and adhere on the surface, the film hanging is easier to realize, the film hanging speed is improved by 20-40%, and the film hanging starting time of a system is shortened by about 30%.
2. The raw materials are selected from high-density polyethylene with high and uniform surface roughness as a main material, and other silicon dioxide, zinc oxide, magnetite and barite are matched, so that the damage time of environmental stress cracking resistance is more than or equal to 2800h, the service life is long, and the service life can reach more than 10 years.
3. The suspended carrier prepared by the method can complete good fluidization and pollutant removal only by means of original oxygenation equipment in the culture process, does not need to improve oxygenation aeration quantity, and saves energy consumption by more than 10%.
4. When combined with oxygenation equipment in the mariculture process, the device can form effective cutting of aeration bubbles, realizes mass transfer required by biological reaction of dissolved oxygen, pollutants and biological membranes, and is beneficial to improving the aeration oxygenation utilization rate and the pollutant removal amount of the suspended carrier in unit volume.
5. The density of the suspension carrier is 1010-1050 kg/m 3 The density is close to sea water, the shape is similar to a cylinder, four outer ring support ribs are arranged in the cylinder, 20 corrugated convex angles are arranged on the outer side along different radial directions, the unit specific surface area is large, the surface is easy to adhere to a biological film, the design can not be blocked by agglomeration during use, the ventilation and water passing performances are good all the time, the carrier is favorable for fully contacting the carrier adhering biological film with sewage, and the good removal effect of pollutants is realized.
6. The method overcomes the defect that the traditional high-density polyethylene suspension carrier cannot be effectively suspended in seawater due to low density, has simple and convenient operation, good quality of effluent, stable operation and cost saving, and is suitable for the production of products.
7. Compared with the traditional suspension carrier, the suspension carrier has larger specific gravity, can suspend in seawater and realize good fluidization effect, has larger specific surface area, and is added with positively charged metal oxide, thereby being beneficial to the adhesion growth of microorganisms in the suspension carrier, improving the film forming speed and realizing the efficient starting and stable operation of the seawater wastewater treatment system.
8. Can be used for treating various seawater culture wastewater, such as kelp culture, sea cucumber culture and weever culture. Can realize the purpose of efficiently and safely removing ammonia nitrogen and organic pollutants in water.
Drawings
FIG. 1 is a photograph of a suspension vehicle prepared in example 1.
Detailed Description
The reagents and raw materials used in the invention are all commercial products except for special descriptions.
Example 1
(1) Weighing 398 parts of high-density polyethylene, 1 part of silicon dioxide, 1 part of zinc oxide, 3 parts of magnetite and 3 parts of barite according to the parts by weight. The silicon dioxide, zinc oxide, magnetite and barite are crushed into powder with fineness of more than 200 meshes.
(2) The silica powder and zinc oxide powder were mixed uniformly.
(3) Magnetite powder and barite powder were added.
(4) Adding high-density polyethylene, adding plastic toner according to target color, and mixing to obtain mixture of high-density polyethylene, silicon dioxide, zinc oxide, magnetite, barite powder and toner.
(5) The mixture is sent into a granulator and processed into granules at the temperature of 210-220 ℃.
(6) The mixed material particles are conveyed to an extruder, a die with the same cross-sectional shape as required is arranged at the outlet of the extruder, and the temperature of the extruder body can reach more than 110 ℃. Along with the operation of the extruder, the raw materials are pushed to the direction of a die, a suspension carrier with a required shape is extruded, and then the suspension carrier product with a required length and shape is obtained through cooling, shaping and cutting.
In this embodiment, the suspension carrier is in the shape of a single ring cylinder, as shown in fig. 1, and includes four outer ring support ribs inside, and 20 corrugated lobes are extended on the outer ring cylinder along different radial directions, with a diameter of 25mm, a ratio of height to diameter of 0.4, and a wall thickness of 1mm.
The suspension vehicle prepared in this example had a density of about 1010kg/m 3 。
Example 2
The difference between this embodiment and embodiment 1 is that step (1) is different, specifically:
(1) 400 parts of high-density polyethylene, 1 part of silicon dioxide, 2 parts of zinc oxide, 5 parts of magnetite and 4 parts of barite are respectively weighed according to parts by weight. The silicon dioxide, zinc oxide, magnetite and barite are crushed into powder with fineness of more than 200 meshes.
The other steps are the same.
The suspension vehicle prepared in this example had a density of about 1050kg/m 3 。
Example 3
The difference between this embodiment and embodiment 1 is that step (1) is different, specifically:
(1) Weighing 399 parts of high-density polyethylene, 2 parts of silicon dioxide, 2 parts of zinc oxide, 2 parts of magnetite and 4 parts of barite according to the parts by weight. The silicon dioxide, zinc oxide, magnetite and barite are crushed into powder with fineness of more than 200 meshes.
The other steps are the same.
The suspension vehicle prepared in this example had a density of about 1030kg/m 3 。
Example 4
The difference between this embodiment and embodiment 1 is that step (1) is different, specifically:
(1) 402 parts of high-density polyethylene, 3 parts of silicon dioxide, 1.5 parts of zinc oxide, 4 parts of magnetite and 3 parts of barite are respectively weighed according to parts by weight. The silicon dioxide, zinc oxide, magnetite and barite are crushed into powder with fineness of more than 200 meshes.
The other steps are the same.
The suspension vehicle prepared in this example had a density of approximately 1040kg/m 3 。
Claims (7)
1. A high-density suspension carrier for mariculture wastewater treatment, which is characterized by comprising the following substances in parts by weight:
398-402 parts of high-density polyethylene; 1-3 parts of silicon dioxide, 1-2 parts of zinc oxide, 2-5 parts of magnetite and 3-4 parts of barite.
2. A high density suspension carrier for mariculture wastewater treatment according to claim 1, wherein saidThe density of the suspension carrier is 1010-1050 kg/m 3 。
3. The high density suspended carrier for use in the treatment of mariculture wastewater according to claim 1, wherein the surface roughness grade of the suspended carrier is IT8 to IT10.
4. A method for preparing a high density suspension carrier for use in the treatment of mariculture wastewater as claimed in any one of claims 1 to 3, comprising the steps of:
(1) Weighing 398-402 parts by weight of high-density polyethylene respectively; 1-3 parts of silicon dioxide, 1-2 parts of zinc oxide, 2-5 parts of magnetite and 3-4 parts of barite; crushing silicon dioxide, zinc oxide, magnetite and barite into powder;
(2) Uniformly mixing silicon dioxide powder and zinc oxide powder;
(3) Adding magnetite powder and barite powder, and regulating the density to 1010-1050 kg/m 3 ；
(4) Adding high-density polyethylene, adding plastic toner according to a target color, and uniformly mixing to form a mixture of the high-density polyethylene, silicon dioxide, zinc oxide, magnetite, barite powder and toner;
(5) Heating and processing the mixture into mixture particles by a granulator;
(6) And conveying the mixture particles to an extruder, heating, extruding for molding, cooling and cutting.
5. The method for preparing a high-density suspension carrier for mariculture wastewater treatment according to claim 4, wherein the fineness of the silica powder, zinc oxide powder, magnetite powder and barite powder in the step (1) is all larger than 200 mesh.
6. The method for preparing a high-density suspended carrier for use in the treatment of mariculture wastewater according to claim 4, wherein the heating temperature in the step (5) is 210-220 ℃.
7. The method for preparing a high-density suspended carrier for use in the treatment of mariculture wastewater according to claim 4, wherein the heating temperature in said step (6) is 110 to 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723596.7A CN116790056A (en) | 2023-06-16 | 2023-06-16 | High-density suspension carrier for mariculture wastewater treatment and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310723596.7A CN116790056A (en) | 2023-06-16 | 2023-06-16 | High-density suspension carrier for mariculture wastewater treatment and preparation method thereof |
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| CN116790056A true CN116790056A (en) | 2023-09-22 |
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| CN202310723596.7A Pending CN116790056A (en) | 2023-06-16 | 2023-06-16 | High-density suspension carrier for mariculture wastewater treatment and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN116790056A (en) |
-
2023
- 2023-06-16 CN CN202310723596.7A patent/CN116790056A/en active Pending
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