CN110872150A - High-molecular modified polyethylene filler and preparation method thereof - Google Patents
High-molecular modified polyethylene filler and preparation method thereof Download PDFInfo
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- CN110872150A CN110872150A CN201911212697.8A CN201911212697A CN110872150A CN 110872150 A CN110872150 A CN 110872150A CN 201911212697 A CN201911212697 A CN 201911212697A CN 110872150 A CN110872150 A CN 110872150A
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- 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
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- 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
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- 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
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- C02F3/105—Characterized by the chemical composition
- C02F3/106—Carbonaceous materials
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- 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
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- 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
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- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a high-molecular modified polyethylene filler, which comprises the following raw materials in parts by weight: 40-50 parts of high-molecular polyethylene, 20-30 parts of polyethylene, 5-10 parts of graphite, 10-15 parts of hydroxyl silica fume, 1-3 parts of aluminum oxide, 1-3 parts of calcium stearate, 1-3 parts of celestite, 3-5 parts of titanium dioxide and 3-5 parts of silicon dioxide, and has the advantages of strong hydrophilicity, good microbial adhesion, difficulty in falling of a biological film from the surface of a filler, change of the thickness of an inner surface film along with load, capability of maintaining higher microbial concentration, good interception effect on zoogloea, capability of providing a substrate for microbes adhered to the surface and promotion of growth and propagation.
Description
Technical Field
The invention relates to the technical field of high-molecular modified polyethylene fillers, in particular to a high-molecular modified polyethylene filler and a preparation method thereof.
Background
The suspended filler is the core part of the MBBR, and the parameters such as the performance, the filling rate and the like directly influence the treatment effect of the reactor, so that the selection of the proper filler is a key factor for the successful operation of the MBBR.
The existing high molecular polyethylene filler has poor microbial adhesion, a biological film is easy to fall off from the surface of the filler, the high microbial concentration cannot be maintained, and the high molecular polyethylene filler has no good interception effect on zoogloea.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a high-molecular modified polyethylene filler and a preparation method thereof.
The high molecular modified polyethylene filler comprises the following raw materials in parts by weight: 40-50 parts of high-molecular polyethylene, 20-30 parts of polyethylene, 5-10 parts of graphite, 10-15 parts of hydroxyl silica fume, 1-3 parts of alumina, 1-3 parts of calcium oxide, 1-3 parts of calcium stearate, 1-3 parts of celestite, 3-5 parts of titanium dioxide and 3-5 parts of silicon dioxide.
Preferably, the graphite is a scaly solid.
Preferably, the polyethylene is linear low density polyethylene.
A preparation method of a high-molecular modified polyethylene filler comprises the following steps:
s1, proportionally adding high-molecular polyethylene, graphite, hydroxyl silica fume and celestite into a mixer to be stirred for the first time, wherein the stirring time is 30-40 minutes;
s2, after the first stirring, putting the alumina, the calcium oxide, the calcium stearate, the dioxide and the silicon dioxide into a mixer in proportion for second stirring for 20-30 minutes;
s3, after the second stirring, putting the mixed powder into a refiner for grinding;
s4, putting the ground powder into a die for die pressing and sintering, wherein the sintering temperature is 260-290 ℃;
and S5, demolding after die pressing and sintering, and carrying out air cooling for 10-15 hours.
Preferably, the mould is hollow cylinder, and establishes six support bars in the hollow cylinder, and hollow cylinder is the wave tooth all around.
Preferably, the grinding time of the refiner in S3 is 20-40 minutes.
The invention has the beneficial effects that:
the invention has the unique advantages of ① engineering implementation simplicity, ② hydrophilicity stronger, microorganism adhesion force good, biofilm not easy to fall off from the surface of the filler, the thickness of the inner surface film changes with load, ③ capable of maintaining higher microorganism concentration and having good interception effect on zoogloea, ④ in the reactor, turning and flowing under aeration, water flow can wash the aged biofilm on the surface of the filler, which is beneficial to timely fall off of the aged biofilm and regeneration of new biofilm, meanwhile, cutting and blocking effect on air bubbles is enhanced, oxygen transfer efficiency is effectively improved, ⑤ can flexibly adjust the microorganism amount in the reactor according to the filling rate of the filler, ⑥ inorganic mineral has certain adsorption effect on NH3-N, and provides substrate for the microorganism adhered on the surface, and promotes growth and propagation of the microorganism.
Drawings
FIG. 1 is a diagram of a polymer modified polyethylene filler according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
The high molecular modified polyethylene filler comprises the following raw materials in parts by weight: 40 parts of high-molecular polyethylene, 20 parts of polyethylene, 5 parts of graphite, 10 parts of hydroxyl silica fume, 1 part of alumina, 1 part of calcium oxide, 1 part of calcium stearate, 1 part of celestite, 3 parts of titanium dioxide and 3 parts of silicon dioxide, wherein the graphite is a scaly solid, and the polyethylene is linear low-density polyethylene.
A preparation method of a high-molecular modified polyethylene filler comprises the following steps:
s1, adding high-molecular polyethylene, graphite, hydroxyl silica fume and celestite into a mixer in proportion, and stirring for the first time for 30 minutes;
s2, after the first stirring, putting the alumina, the calcium oxide, the calcium stearate, the dioxide and the silicon dioxide into a mixer in proportion for second stirring for 20 minutes;
s3, after the second stirring, putting the mixed powder into a refiner for grinding, wherein the grinding time of the refiner is 20 minutes;
s4, putting the ground powder into a mold for mold pressing and sintering, wherein the sintering temperature is 260 ℃, the mold is in a hollow cylinder shape, six support bars are arranged in the hollow cylinder shape, and the periphery of the hollow cylinder shape is in a wave shape;
and S5, demolding after die pressing and sintering, and carrying out air cooling for 10 hours.
Example two
The high molecular modified polyethylene filler comprises the following raw materials in parts by weight: 35 parts of high-molecular polyethylene, 25 parts of polyethylene, 8 parts of graphite, 12 parts of hydroxyl silica fume, 2 parts of alumina, 2 parts of calcium oxide, 2 parts of calcium stearate, 2 parts of celestite, 4 parts of titanium dioxide and 4 parts of silicon dioxide, wherein the graphite is a scaly solid, and the polyethylene is linear low-density polyethylene.
A preparation method of a high-molecular modified polyethylene filler comprises the following steps:
s1, adding high-molecular polyethylene, graphite, hydroxyl silica fume and celestite into a mixer in proportion, and stirring for the first time for 35 minutes;
s2, after the first stirring, putting the alumina, the calcium oxide, the calcium stearate, the dioxide and the silicon dioxide into a mixer in proportion for second stirring, wherein the stirring time is 25 minutes;
s3, after the second stirring, putting the mixed powder into a refiner for grinding, wherein the grinding time of the refiner is 30 minutes;
s4, putting the ground powder into a mold for mold pressing and sintering, wherein the sintering temperature is 275 ℃, the mold is in a hollow cylinder shape, six support bars are arranged in the hollow cylinder shape, and the periphery of the hollow cylinder shape is in a wave shape;
and S5, demolding after die pressing and sintering, and carrying out air cooling for 13 hours.
EXAMPLE III
The high molecular modified polyethylene filler comprises the following raw materials in parts by weight: 50 parts of high-molecular polyethylene, 30 parts of polyethylene, 10 parts of graphite, 15 parts of hydroxyl silica fume, 3 parts of alumina, 3 parts of calcium oxide, 3 parts of calcium stearate, 3 parts of celestite, 5 parts of titanium dioxide and 5 parts of silicon dioxide, wherein the graphite is a scaly solid, and the polyethylene is linear low-density polyethylene.
A preparation method of a high-molecular modified polyethylene filler comprises the following steps:
s1, adding high-molecular polyethylene, graphite, hydroxyl silica fume and celestite into a mixer in proportion, and stirring for the first time for 40 minutes;
s2, after the first stirring, putting the alumina, the calcium oxide, the calcium stearate, the dioxide and the silicon dioxide into a mixer in proportion for second stirring for 30 minutes;
s3, after the second stirring, putting the mixed powder into a refiner for grinding, wherein the grinding time of the refiner is 40 minutes;
s4, putting the ground powder into a mold for mold pressing and sintering, wherein the sintering temperature is 290 ℃, the mold is in a hollow cylinder shape, six support bars are arranged in the hollow cylinder shape, and the periphery of the hollow cylinder shape is in a wave shape;
and S5, demolding after die pressing and sintering, and carrying out air cooling for 15 hours.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The high-molecular modified polyethylene filler is characterized by comprising the following raw materials in parts by weight: 40-50 parts of high-molecular polyethylene, 20-30 parts of polyethylene, 5-10 parts of graphite, 10-15 parts of hydroxyl silica fume, 1-3 parts of alumina, 1-3 parts of calcium oxide, 1-3 parts of calcium stearate, 1-3 parts of celestite, 3-5 parts of titanium dioxide and 3-5 parts of silicon dioxide.
2. The polymer-modified polyethylene filler according to claim 1, wherein the graphite is a scaly solid.
3. The polymer-modified polyethylene filler according to claim 1, wherein the polyethylene is linear low density polyethylene.
4. The preparation method of the high-molecular modified polyethylene filler is characterized by comprising the following steps:
s1, proportionally adding high-molecular polyethylene, graphite, hydroxyl silica fume and celestite into a mixer to be stirred for the first time, wherein the stirring time is 30-40 minutes;
s2, after the first stirring, putting the alumina, the calcium oxide, the calcium stearate, the dioxide and the silicon dioxide into a mixer in proportion for second stirring for 20-30 minutes;
s3, after the second stirring, putting the mixed powder into a refiner for grinding;
s4, putting the ground powder into a die for die pressing and sintering, wherein the sintering temperature is 260-290 ℃;
and S5, demolding after die pressing and sintering, and carrying out air cooling for 10-15 hours.
5. The method for preparing the polymer modified polyethylene filler according to claim 4, wherein the mold is in a hollow cylinder shape, six support bars are arranged in the hollow cylinder shape, and the periphery of the hollow cylinder shape is in a wave shape.
6. The method of claim 4, wherein the refiner in S3 has a grinding time of 20-40 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212697.8A CN110872150A (en) | 2019-12-02 | 2019-12-02 | High-molecular modified polyethylene filler and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911212697.8A CN110872150A (en) | 2019-12-02 | 2019-12-02 | High-molecular modified polyethylene filler and preparation method thereof |
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| CN110872150A true CN110872150A (en) | 2020-03-10 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080038554A1 (en) * | 2004-09-08 | 2008-02-14 | Brightwater Engineering Limited | Media |
| CN103708619A (en) * | 2014-01-21 | 2014-04-09 | 厦门市威士邦膜科技有限公司 | Fluidized bed biofilm filler, and preparation method and filler structure thereof |
| CN107446209A (en) * | 2017-07-31 | 2017-12-08 | 四川国中亿思通环保科技有限公司 | A kind of hydrophilic MBBR fillers of magnetic and preparation method thereof |
| CN107628683A (en) * | 2017-10-27 | 2018-01-26 | 钟华 | A kind of biologic packing material and preparation method and application |
| CN107746490A (en) * | 2017-09-27 | 2018-03-02 | 中玺新材料（安徽）有限公司 | A kind of modified with ultrahigh molecular weight polyethylene formula |
| CN107758847A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High biofilm amount MBBR suspended biological fillers and preparation method thereof |
| KR101903043B1 (en) * | 2018-04-27 | 2018-10-01 | 주식회사 대성그린테크 | Advanced oxidation, adsoption system for control of micropollutants in wastewater |
-
2019
- 2019-12-02 CN CN201911212697.8A patent/CN110872150A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080038554A1 (en) * | 2004-09-08 | 2008-02-14 | Brightwater Engineering Limited | Media |
| CN103708619A (en) * | 2014-01-21 | 2014-04-09 | 厦门市威士邦膜科技有限公司 | Fluidized bed biofilm filler, and preparation method and filler structure thereof |
| CN107758847A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High biofilm amount MBBR suspended biological fillers and preparation method thereof |
| CN107446209A (en) * | 2017-07-31 | 2017-12-08 | 四川国中亿思通环保科技有限公司 | A kind of hydrophilic MBBR fillers of magnetic and preparation method thereof |
| CN107746490A (en) * | 2017-09-27 | 2018-03-02 | 中玺新材料（安徽）有限公司 | A kind of modified with ultrahigh molecular weight polyethylene formula |
| CN107628683A (en) * | 2017-10-27 | 2018-01-26 | 钟华 | A kind of biologic packing material and preparation method and application |
| KR101903043B1 (en) * | 2018-04-27 | 2018-10-01 | 주식회사 대성그린테크 | Advanced oxidation, adsoption system for control of micropollutants in wastewater |
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