Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Porous polymer filling material for biotrickling filter

A technology of porous polymer and biological trickling filter bed, which is applied in the field of environmental protection and polymer materials, can solve the problems of low compressive strength and poor hydrophilic affinity, etc., and achieve the purpose of improving compressive strength, increasing water absorption, and improving sewage flux effect

Inactive Publication Date: 2017-05-10
HEFEI INNOVATION LIGHTWEIGHT MATERIALS
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of porous polymer filler for biological trickling filter bed with large specific surface area, light specific gravity and hydrophilic affinity, which overcomes the problems of poor hydrophilic affinity and low compressive strength of traditional porous polymers

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
  • Porous polymer filling material for biotrickling filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 95 parts of polypropylene, 3 parts of methyl styrene, 2 parts of talcum powder, 1 part of polyvinyl alcohol, and 1 part of iron powder into a mixer and mix evenly, then add a single-screw extruder with a diameter of 65mm and an aspect ratio of 50 In the feeding port of the extruder, 19 parts of liquid carbon dioxide are injected into the compression section of the extruder, and after being fully mixed, it is extruded through a circular die (1 mm in diameter), and then stretched, cooled, and pelletized.

[0031] The porous polymer filler has a density of 50 g / L, a particle diameter of 3 mm, and an open porosity of 91%.

Embodiment 2

[0033] Mix 85 parts of polystyrene, 10 parts of polymethacrylate, 4 parts of sodium bicarbonate and citric acid mixture, 3 parts of pottery powder, and 2 parts of magnetic powder in a mixer. In the feed port of the single-screw extruder, inject 8.5 parts of nitrogen into the compression section of the extruder, mix well and extrude through a circular die (diameter 1mm), then stretch, cool, and pelletize.

[0034] The porous polymer filler has a density of 40 g / L, a particle diameter of 3 mm, and an open porosity of 93%.

Embodiment 3

[0036] Mix 80 parts of polyethylene, 18 parts of EPDM rubber, 0.5 parts of kaolin, 5 parts of activated carbon, and 1 part of magnetic powder in a mixer, and then add a serial single-screw extruder with a diameter of 65 / 90mm and an aspect ratio of 35 In the feeding port of the extruder, inject 4 parts of butane into the compression section of the extruder, mix well and extrude through a circular die (2.5 mm in diameter), then stretch, cool, and pelletize.

[0037] The porous polymer filler has a density of 20 g / L, a particle diameter of 8 mm, and an open porosity of 95%.

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a porous polymer filling material for a biotrickling filter. The porous polymer filling material is prepared from the following ingredients in parts by weight: polymer resin, polymer modifiers, nucleating agents, hydrophilic modifiers, compatibility modifiers and pore forming agents. The filling material has the characteristics of large specific area, light specific weight, hydrophilia, compatibility and the like; the removal rate of COD and NH3-N in sewage are improved; the filling material belongs to an ideal biotrickling filter filling material.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and polymer materials, in particular to a biodegradable ammonia nitrogen (NH 3 -N) and chemical oxygen demand (COD) of porous polymer fillers. Background technique [0002] The biological trickling filter bed originated more than 100 years ago. It has become the preferred technology for the municipal sewage treatment industry due to its broad-spectrum applicability, high efficiency, low consumption, and wide-scale promotion. Since the filler is the place where microorganisms live and work, it is not only a support carrier for microbial growth, but also a gas-liquid-solid mass transfer medium, and its performance directly affects the effect of degrading pollutants. Therefore, filler is one of the core technologies of biological trickling filter beds. [0003] Traditional bio-trickling filter bed fillers include compost, bark, wood chips, charcoal and other fillers. With the advan...

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
IPC IPC(8): C02F3/00C02F3/34
CPCC02F3/00C02F3/34C02F2003/001C02F2209/08C02F2209/14C02F2305/06
Inventor 戴苍松陶慷高振兴郭洪武李玉玲余莉花
Owner HEFEI INNOVATION LIGHTWEIGHT MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com