A kind of filler for fluidized bed biofilm method and its preparation method

A biofilm method and fluidized bed technology, applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problem of poor hydrophilic performance and biological affinity, cumbersome molding processing steps, and short service life. and other problems, to achieve the effect of improving permeability, improving material exchange capacity, and improving the amount of film hanging

Active Publication Date: 2019-05-21
四川维思达医疗器械有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the poor hydrophilicity and bio-affinity of the common polyvinyl chloride biofillers on the market, there are deficiencies in the film-hanging speed, the amount of film-hanging, and the tightness between the film and the filler. Substances) Add appropriate substances to the filler for blending modification, which is expected to improve the mass transfer, 2 film formation and water treatment performance of the filler
In addition, the impact strength of PVC is only 2-5kJ / m, which has the disadvantages of low impact strength and poor thermal stability, which makes the filler easy to age and has a short service life.
And the molding process steps are cumbersome, resulting in a lot of waste of raw materials, so it is urgent to develop an environmentally friendly filler with simple structure, high processing efficiency and strong durability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of filler for fluidized bed biofilm method and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the filler used in the fluidized bed biofilm method is characterized in that it includes the following steps: (1) pulverizing carbonized rice husk powder, diatomaceous earth, and calcium hydroxyphosphate until the particle size is below 200 mesh, and carbonizing the rice husk 7.5 parts of powder, 7.5 parts of diatomaceous earth, 7.5 parts of calcium hydroxyphosphate, 50 parts of PVC elastomer, 30 parts of polyvinyl alcohol resin, 4 parts of hard acid, 3 parts of polyacrylamide, 15 parts of isopropyl chloride and mix well, Stir at high speed, add the above mixed material into the foam molding machine to melt and foam; (2) Then inject it into the mold to form inner layer filled microspheres with a diameter of 1.5cm; (3) Fill 60 inner layer filled microspheres The balls are added to the outer mesh bag with a mesh diameter of 0.5cm. The material of the outer mesh bag is thermoplastic resin and polypropylene, which is fixed so that it cannot slide fr...

Embodiment 2

[0024] The preparation method of the filler used in the fluidized bed biofilm method is characterized in that it includes the following steps: (1) pulverizing carbonized rice husk powder, diatomaceous earth, and calcium hydroxyphosphate until the particle size is below 200 mesh, and carbonizing the rice husk 10 parts of powder, 5 parts of diatomaceous earth, 10 parts of calcium hydroxyphosphate, 40 parts of PVC elastomer, 40 parts of polyvinyl alcohol resin, 2 parts of hard acid, 5 parts of polyacrylamide, 10 parts of isopropyl chloride, mix well, Stir at high speed, add the above-mentioned mixture into the foam molding machine to melt and foam; (2) Then inject it into the mold to form inner layer filled microspheres with a diameter of 2cm; (3) Fill 20 inner layer filled microspheres Add it into the outer mesh bag with a mesh diameter of 0.6cm. The material of the outer mesh bag is thermoplastic resin, which is polypropylene. The filler is irradiated with light, the wavelength...

Embodiment 3

[0026] The preparation method of the filler used in the fluidized bed biofilm method is characterized in that it includes the following steps: (1) pulverizing carbonized rice husk powder, diatomaceous earth, and calcium hydroxyphosphate until the particle size is below 200 mesh, and carbonizing the rice husk 5 parts of powder, 10 parts of diatomaceous earth, 5 parts of calcium hydroxyphosphate, 60 parts of PVC elastomer, 20 parts of polyvinyl alcohol resin, 6 parts of hard acid, 1 part of polyacrylamide, 20 parts of isopropyl chloride, mix well, Stir at high speed, add the above-mentioned mixture into the foam molding machine to melt and foam; (2) Then inject it into the mold to form inner layer filled microspheres with a diameter of 1cm; (3) Fill 100 inner layer filled microspheres Add it into the outer mesh bag with a mesh diameter of 0.3cm. The material of the outer mesh bag is thermoplastic resin, which is polypropylene. The filler is irradiated with light, the wavelength ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides novel environment-friendly packing for a mobile bed biofilm method. The novel environment-friendly packing for the mobile bed biofilm method is characterized by comprising an external-layer mesh bag and inner-layer filling microspheres; the inner-layer filling microspheres comprise, by mass, 5-10 parts of carbonized rice husk powder, 5-10 parts of diatomite, 5-10 parts of hydroxy calcium phosphate, 40-60 parts of PVC elastomer, 20-40 parts of polyvinyl alcohol resin, 2-6 parts of stearic acid, 1-5 parts of polyacrylamide and 10-20 parts of foaming agent; the external-layer mesh bag is thermoplastic resin and adheres to the surfaces of the inner-layer filling microspheres through thermal treatment. The novel environment-friendly packing for the mobile bed biofilm method is simple in structure, can lower the production cost, and is environmentally friendly, easy to degrade, large in hanging film amount, and high in sewage treatment efficiency.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a filler used in a fluidized bed biofilm method and a preparation method thereof. Background technique [0002] Ammonia nitrogen in sewage is the main pollution source. At present, the main removal methods for ammonia nitrogen include physical adsorption, catalytic oxidation and biological pretreatment. Ammonia nitrogen is a polar molecule, so it is necessary to modify common adsorbents, such as activated carbon, zeolite, ceramsite, etc., and the adsorption effect is limited, and it needs to be regenerated when it reaches saturation. The comprehensive treatment effect and economy are more suitable for sudden pollution. As a conventional treatment method; ammonia nitrogen is extremely stable in water bodies, and it is difficult to oxidize it with general oxidants. Catalytic oxidation is generally used, but the effect is not good and the operating cost is high; consideri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/10C08J9/14C08J3/28C08L27/06C08L29/04C08L33/26C08K13/04C08K7/26C08K3/04C08K3/32C08K5/09
CPCC02F3/00C02F3/105C02F3/108C02F2003/001C08J3/28C08J9/0023C08J9/0061C08J9/0066C08J9/0085C08J9/145C08J2203/142C08J2327/06C08J2429/04C08J2433/26C08K3/04C08K5/09C08K7/26C08K13/04C08K2003/325C08K2201/003Y02W10/10
Inventor 徐雄剑
Owner 四川维思达医疗器械有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap