CN115057524B - Leachate sewage treatment process - Google Patents

Leachate sewage treatment process Download PDF

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Publication number
CN115057524B
CN115057524B CN202210679423.5A CN202210679423A CN115057524B CN 115057524 B CN115057524 B CN 115057524B CN 202210679423 A CN202210679423 A CN 202210679423A CN 115057524 B CN115057524 B CN 115057524B
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treatment process
nano hydroxyapatite
filler
sewage treatment
leachate
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CN115057524A (en
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李�荣
夏春武
吴海雁
周玉辉
于志敏
王玉梅
梅红纯
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Hunan Kemeijie Environmental Protection Technology Co ltd
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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
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • 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
    • C02F2103/06—Contaminated groundwater or leachate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to the technical field of sewage treatment, in particular to a percolate sewage treatment process, which is characterized in that percolate sewage is treated by a biological membrane reactor; the biomembrane reactor comprises a plurality of hollow spheres and a filler, and a microbial agent fixed inside and on the surface of the hollow spheres and/or the filler; the filler is an organic modified nano hydroxyapatite/aliphatic polyurethane composite material, and the process can remarkably improve the effect and efficiency of percolate sewage treatment, has stable operation and reduces COD cr 、BOD 5 And the ammonia nitrogen content, the service cycle of the biological film is prolonged, and the sewage reduction is realized.

Description

Leachate sewage treatment process
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a percolate sewage treatment process.
Background
The garbage is decomposed by compacting, fermenting, etc. and under the action of dewatering and the seepage of underground water, a high-concentration liquid of organic or inorganic components, called percolate, is produced, which is compared with city sewage, COD cr 、BOD 5 The highest concentration can reach thousands to tens of thousands, and the sewage can not be directly discharged into a municipal sewage treatment pipeline without strict treatment and disposal.
At present, in engineering practical application, a biomembrane method is often used as a main means for purifying percolate sewage. Has stronger adsorption and oxidative degradation capability to organic pollutants in percolate sewage. However, the method has the problems of low microbial film forming efficiency, low sewage treatment efficiency and the like.
Disclosure of Invention
The invention aims to: aiming at the technical problems, the invention provides a percolate sewage treatment process.
The technical scheme adopted is as follows:
a percolate sewage treatment process comprises the following steps: treating percolate sewage through a biomembrane reactor;
the biomembrane reactor comprises a plurality of hollow spheres and a filler, and a microbial agent fixed inside and on the surface of the hollow spheres and/or the filler;
the filler is an organic modified nano hydroxyapatite/aliphatic polyurethane composite material.
Further, the preparation method of the organic modified nano hydroxyapatite/aliphatic polyurethane composite material comprises the following steps:
uniformly mixing polyethylene glycol 2000 and castor oil, heating to 70-80 ℃ under the protection of nitrogen, adding isocyanate and an organotin catalyst, carrying out heat preservation reaction for 3-5 hours, cooling to 40-50 ℃, adding acetone for dilution, adding 1, 4-butanediol, reacting for 30-60 minutes, adding organic modified nano hydroxyapatite and an initiator, stirring for 6-10 hours, adding water, stirring for 1-3 hours, distilling the reactant under reduced pressure to remove the solvent, adding water into the obtained solid, stirring for 8-15 hours, carrying out suction filtration, and drying.
Further, the preparation method of the organic modified nano hydroxyapatite comprises the following steps:
uniformly mixing nano hydroxyapatite, benzene, hydroquinone, p-toluenesulfonic acid and methacrylic acid, heating to reflux reaction for 5-8h, cooling to 40-50 ℃, filtering while hot, extracting a filter cake with chloroform, washing with water, and drying.
Further, the mass ratio of the nano hydroxyapatite to the methacrylic acid is 1:1.5-3.
Further, the isocyanate is an unsaturated aliphatic isocyanate.
Further, the unsaturated aliphatic isocyanate is 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate.
Further, the organotin catalyst is any one of dibutyl tin dilaurate, stannous octoate, dibutyl tin di (dodecyl sulfide) and dibutyl tin diacetate.
Further, the initiator is any one of benzoyl peroxide, tert-butyl benzoyl peroxide and methyl ethyl ketone peroxide.
Further, the polyhedral hollow sphere is made of polypropylene plastic.
Further, the microbial agent comprises at least one of bacillus subtilis, salt-tolerant bacillus, bacillus amyloliquefaciens, bacillus cereus, bacillus thuringiensis, pseudomonas grass, pseudomonas antarctica, pseudomonas avermitilis, pseudomonas azotoformans and nitrifying bacteria.
The invention has the beneficial effects that:
the invention provides a percolate sewage treatment process, which is characterized in that percolate sewage is treated by a biological film reactor, the filler in the biological film reactor can provide sufficient space for enrichment and growth of microorganisms, nano hydroxyapatite has good biocompatibility, and the attachment sites of microorganisms are more, unsaturated double bonds are introduced on the surface of the modified nano hydroxyapatite after modification, and the modified nano hydroxyapatite is compounded with aliphatic polyurethane, so that the mechanical property, the microbial load and the adsorption capacity of the filler are improved, the film hanging period is shortened, the film hanging efficiency is improved, the process can obviously improve the effect and the efficiency of the percolate sewage treatment, the operation is stable, and the COD is reduced cr 、BOD 5 And the ammonia nitrogen content, the service cycle of the biological film is prolonged, and the sewage reduction is realized.
Drawings
FIG. 1 is a diagram showing the microscopic morphology of the organically modified nano-hydroxyapatite/aliphatic polyurethane composite material in example 1 of the present invention.
Detailed Description
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1:
a percolate sewage treatment process comprises the following steps:
the parameters of the water quality of the leachate sewage inflow are shown in the following table:
the leachate sewage is treated by a biological membrane reactor, the biological membrane reactor comprises a polyhedral hollow sphere made of polypropylene plastic, a filler and a microbial agent fixed inside and on the surface of the polyhedral hollow sphere and the filler, the shell of the biological membrane reactor is made of stainless steel, the external dimension is 0.75mx0.36mx1.73 m, and the effective volume is 0.4m 3 The method is characterized in that a multi-surface hollow sphere and a filler are arranged in the multi-surface hollow sphere, the treatment is carried out at normal temperature, the mass concentration of Dissolved Oxygen (DO) is controlled to be 2-4mg/L, no manual sludge discharge is carried out during operation, two cycles are carried out every day, and each cycle consists of feeding (15 min), reacting (11.5 h) and draining (15 min).
Wherein, the filler is an organic modified nano hydroxyapatite/aliphatic polyurethane composite material, and the preparation method comprises the following steps:
uniformly mixing 150g of nano hydroxyapatite, 750mL of benzene, 2.1g of hydroquinone, 16.5g of p-toluenesulfonic acid and 250mL of methacrylic acid, heating to reflux for reaction for 6h, cooling to 45 ℃ and filtering while the mixture is hot, extracting a filter cake with chloroform, washing with water, drying to obtain the organic modified nano hydroxyapatite, uniformly mixing 100g of polyethylene glycol 2000 and 200g of castor oil, heating to 80 ℃ under the protection of nitrogen, adding 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate, carrying out heat preservation for reaction for 5h, cooling to 45 ℃, adding 50mL of acetone for dilution, adding 10g of 1, 4-butanediol, reacting for 50min, adding 150g of the organic modified nano hydroxyapatite and 1g of benzoyl peroxide, stirring for reaction for 8h, adding water for stirring for 2h, distilling the reactant under reduced pressure for removing the solvent, adding water for stirring for 12h, and carrying out suction filtration and drying to obtain the solid.
Diluting percolate sewage by 10 times, adding nitrifying bacteria and bacillus thuringiensis microbial inoculum, stirring, mixing, introducing into a biomembrane reactor, intermittently feeding water during domestication, aerating at bottom, and controlling feedingThe aeration time and the smoldering time of water are 3:1, DO in the system is controlled to be 9-10mg/L during the aeration period, and the inflow rate during the acclimation period is 0.7m 3 And (3) supplementing glucose, urea and sodium dihydrogen phosphate at the water temperature of 25 ℃ in time, gradually forming a film when the carrier, and finishing domestication when the COD concentration difference value of the effluent is not higher than 5% and the COD removal rate is not lower than 80%, wherein the film forming is finished and the film forming time is 6 d.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
example 2:
substantially the same as in example 1, except that the filler was an organically modified nano-hydroxyapatite/aliphatic polyurethane composite material, the preparation method was as follows:
uniformly mixing 150g of nano hydroxyapatite, 750mL of benzene, 2.1g of hydroquinone, 16.5g of p-toluenesulfonic acid and 250mL of methacrylic acid, heating to reflux for reaction for 8h, cooling to 50 ℃, filtering while the mixture is hot, extracting a filter cake with chloroform, washing with water, drying to obtain the organic modified nano hydroxyapatite, uniformly mixing 100g of polyethylene glycol 2000 and 200g of castor oil, heating to 80 ℃ under the protection of nitrogen, adding 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate, carrying out heat preservation for reaction for 5h, cooling to 50 ℃, adding 50mL of acetone for dilution, adding 10g of 1, 4-butanediol, reacting for 60min, adding 150g of the organic modified nano hydroxyapatite and 1g of benzoyl peroxide, stirring for reaction for 10h, adding water for stirring for 3h, distilling the reactant under reduced pressure for removing the solvent, adding water for stirring for 15h, and carrying out suction filtration and drying to obtain the solid.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
example 3:
substantially the same as in example 1, except that the filler was an organically modified nano-hydroxyapatite/aliphatic polyurethane composite material, the preparation method was as follows:
uniformly mixing 150g of nano hydroxyapatite, 750mL of benzene, 2.1g of hydroquinone, 16.5g of p-toluenesulfonic acid and 250mL of methacrylic acid, heating to reflux for reaction for 5h, cooling to 40 ℃ and filtering while the mixture is hot, extracting a filter cake with chloroform, washing with water, drying to obtain the organic modified nano hydroxyapatite, uniformly mixing 100g of polyethylene glycol 2000 and 200g of castor oil, heating to 70 ℃ under the protection of nitrogen, adding 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate, carrying out heat preservation for reaction for 3h, cooling to 40 ℃, adding 50mL of acetone for dilution, adding 10g of 1, 4-butanediol, reacting for 30min, adding 150g of the organic modified nano hydroxyapatite and 1g of benzoyl peroxide, stirring for reaction for 6h, adding water for stirring for 1h, distilling the reactant under reduced pressure for removing the solvent, adding water for stirring for 8h, and carrying out suction filtration and drying to obtain the solid.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
example 4:
substantially the same as in example 1, except that the filler was an organically modified nano-hydroxyapatite/aliphatic polyurethane composite material, the preparation method was as follows:
uniformly mixing 150g of nano hydroxyapatite, 750mL of benzene, 2.1g of hydroquinone, 16.5g of p-toluenesulfonic acid and 250mL of methacrylic acid, heating to reflux for reaction for 5h, cooling to 50 ℃ and filtering while the mixture is hot, extracting a filter cake with chloroform, washing with water, drying to obtain the organic modified nano hydroxyapatite, uniformly mixing 100g of polyethylene glycol 2000 and 200g of castor oil, heating to 70 ℃ under the protection of nitrogen, adding 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate, carrying out heat preservation for reaction for 5h, cooling to 40 ℃, adding 50mL of acetone for dilution, adding 10g of 1, 4-butanediol, reacting for 60min, adding 150g of the organic modified nano hydroxyapatite and 1g of benzoyl peroxide, stirring for reaction for 6h, adding water for stirring for 3h, distilling the reactant under reduced pressure for removing the solvent, adding water for stirring for 8h, and carrying out suction filtration and drying.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
example 5:
substantially the same as in example 1, except that the filler was an organically modified nano-hydroxyapatite/aliphatic polyurethane composite material, the preparation method was as follows:
uniformly mixing 150g of nano hydroxyapatite, 750mL of benzene, 2.1g of hydroquinone, 16.5g of p-toluenesulfonic acid and 250mL of methacrylic acid, heating to reflux for reaction for 8h, cooling to 40 ℃ and filtering while the mixture is hot, extracting a filter cake with chloroform, washing with water, drying to obtain the organic modified nano hydroxyapatite, uniformly mixing 100g of polyethylene glycol 2000 and 200g of castor oil, heating to 80 ℃ under the protection of nitrogen, adding 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate, carrying out heat preservation for reaction for 3h, cooling to 50 ℃, adding 50mL of acetone for dilution, adding 10g of 1, 4-butanediol, reacting for 30min, adding 150g of the organic modified nano hydroxyapatite and 1g of benzoyl peroxide, stirring for reaction for 10h, adding water for stirring for 1h, distilling the reactant under reduced pressure for removing the solvent, adding water for stirring for 15h, and carrying out suction filtration and drying to obtain the solid.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
comparative example 1:
substantially the same as in example 1, except that the biofilm reactor contained no filler.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
comparative example 2:
substantially the same as in example 1, except that the filler was aliphatic polyurethane, the preparation method was as follows:
100g of polyethylene glycol 2000 and 200g of castor oil are uniformly mixed, the temperature is raised to 80 ℃ under the protection of nitrogen, 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate are added, the temperature is reduced to 45 ℃ after the heat preservation reaction is carried out for 5 hours, 50mL of acetone is added for dilution, 10g of 1, 4-butanediol is added for reaction for 50 minutes, stirring is carried out for 8 hours, water is added for stirring for 2 hours, the solvent is removed by reduced pressure distillation of the reactant, and the obtained solid is filtered by suction after stirring for 12 hours.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
comparative example 3:
substantially the same as in example 1, except that the filler was nano hydroxyapatite and aliphatic polyurethane, wherein the aliphatic polyurethane was prepared as follows:
100g of polyethylene glycol 2000 and 200g of castor oil are uniformly mixed, the temperature is raised to 80 ℃ under the protection of nitrogen, 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate are added, the temperature is reduced to 45 ℃ after the heat preservation reaction is carried out for 5 hours, 50mL of acetone is added for dilution, 10g of 1, 4-butanediol is added for reaction for 50 minutes, stirring is carried out for 8 hours, water is added for stirring for 2 hours, the solvent is removed by reduced pressure distillation of the reactant, and the obtained solid is filtered by suction after stirring for 12 hours.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
comparative example 4:
substantially the same as in example 1, except that the nano hydroxyapatite was not subjected to the modification treatment.
The filler is nano hydroxyapatite/aliphatic polyurethane composite material, and the preparation method comprises the following steps:
100g of polyethylene glycol 2000 and 200g of castor oil are uniformly mixed, the temperature is raised to 80 ℃ under the protection of nitrogen, 180g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and 0.5g of dibutyl tin dilaurate are added, the temperature is reduced to 45 ℃ after the heat preservation reaction is carried out for 5 hours, 50mL of acetone is added for dilution, 10g of 1, 4-butanediol is added for reaction for 50 minutes, 150g of nano hydroxyapatite and 1g of benzoyl peroxide are added for reaction for 8 hours under stirring, water is added for stirring for 2 hours, the solvent is removed by reduced pressure distillation, and the obtained solid is filtered by suction after the water is added for stirring for 12 hours.
The parameters of the effluent quality after the percolate sewage treatment are shown in the following table:
the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A leachate sewage treatment process is characterized in that leachate sewage is treated by a biological membrane reactor;
the biomembrane reactor comprises a plurality of hollow spheres and a filler, and a microbial agent fixed inside and on the surface of the hollow spheres and/or the filler;
the filler is an organic modified nano hydroxyapatite/aliphatic polyurethane composite material;
the preparation method of the organic modified nano hydroxyapatite/aliphatic polyurethane composite material comprises the following steps:
uniformly mixing polyethylene glycol 2000 and castor oil, heating to 70-80 ℃ under the protection of nitrogen, adding isocyanate and an organotin catalyst, carrying out heat preservation reaction for 3-5 hours, cooling to 40-50 ℃, adding acetone for dilution, adding 1, 4-butanediol, reacting for 30-60 minutes, adding organic modified nano hydroxyapatite and an initiator, stirring for 6-10 hours, adding water, stirring for 1-3 hours, distilling the reactant under reduced pressure to remove the solvent, adding water into the obtained solid, stirring for 8-15 hours, carrying out suction filtration, and drying;
the preparation method of the organic modified nano hydroxyapatite comprises the following steps:
uniformly mixing nano hydroxyapatite, benzene, hydroquinone, p-toluenesulfonic acid and methacrylic acid, heating to reflux reaction for 5-8h, cooling to 40-50 ℃, filtering while hot, extracting a filter cake with chloroform, washing with water, and drying.
2. The leachate sewage treatment process according to claim 1, wherein the mass ratio of nano hydroxyapatite to methacrylic acid is 1:1.5-3.
3. The leachate wastewater treatment process of claim 1, wherein the isocyanate is an unsaturated aliphatic isocyanate.
4. A leachate wastewater treatment process according to claim 3, wherein the unsaturated aliphatic isocyanate is 3-isopropenyl- α, α -dimethylbenzyl isocyanate.
5. The leachate wastewater treatment process of claim 1, wherein the organotin catalyst is any one of dibutyltin dilaurate, stannous octoate, dibutyltin dilaurate and dibutyltin diacetate.
6. The leachate wastewater treatment process of claim 1, wherein the initiator is any one of benzoyl peroxide, benzoyl tert-butyl peroxide, and methyl ethyl ketone peroxide.
7. The leachate wastewater treatment process of claim 1, wherein the polyhedral hollow sphere is made of polypropylene plastic.
8. The leachate sewage treatment process of claim 1, wherein the microbial agent comprises at least one of bacillus subtilis, halophilus, bacillus amyloliquefaciens, bacillus cereus, bacillus thuringiensis, pseudomonas grass, pseudomonas antarctica, pseudomonas avermitilis, pseudomonas azotoformans, nitrifying bacteria.
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CN116282574B (en) * 2023-03-17 2024-04-26 湖南科美洁环保科技有限公司 Efficient treatment method for landfill leachate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101391113A (en) * 2008-11-07 2009-03-25 四川大学 Polyurethane medical compound film and preparation method thereof
CN102786710A (en) * 2011-05-14 2012-11-21 纪群 Method for preparing bio-carrier by porous foam polymer modification
CN109607761A (en) * 2019-01-27 2019-04-12 哈尔滨商业大学 A kind of tourmaline/polyurethane compounded mix and preparation method
CN109775860A (en) * 2017-11-14 2019-05-21 中国石油化工股份有限公司 A kind of fixed microorganism carrier filler and preparation method thereof
CN110526521A (en) * 2019-09-25 2019-12-03 东莞市粤绿环保有限公司 A kind of landfill leachate graphene integrated purification system and technique
CN112960766A (en) * 2021-02-10 2021-06-15 杭州楠大环保科技有限公司 Aerobic biomembrane material, preparation method and application thereof in sewage treatment technology
CN113213632A (en) * 2021-06-15 2021-08-06 萍乡学院 Nano-hydroxyapatite loofah sponge composite filler and preparation method and application thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7581902B2 (en) * 2006-02-28 2009-09-01 Auburn University In situ immobilization of metals in contaminated sites using stabilized iron phosphate nanoparticles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101391113A (en) * 2008-11-07 2009-03-25 四川大学 Polyurethane medical compound film and preparation method thereof
CN102786710A (en) * 2011-05-14 2012-11-21 纪群 Method for preparing bio-carrier by porous foam polymer modification
CN109775860A (en) * 2017-11-14 2019-05-21 中国石油化工股份有限公司 A kind of fixed microorganism carrier filler and preparation method thereof
CN109607761A (en) * 2019-01-27 2019-04-12 哈尔滨商业大学 A kind of tourmaline/polyurethane compounded mix and preparation method
CN110526521A (en) * 2019-09-25 2019-12-03 东莞市粤绿环保有限公司 A kind of landfill leachate graphene integrated purification system and technique
CN112960766A (en) * 2021-02-10 2021-06-15 杭州楠大环保科技有限公司 Aerobic biomembrane material, preparation method and application thereof in sewage treatment technology
CN113213632A (en) * 2021-06-15 2021-08-06 萍乡学院 Nano-hydroxyapatite loofah sponge composite filler and preparation method and application thereof

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