Self-closing perforated aeration pipe

A perforated aeration, self-closing technology, applied in the field of perforated aeration pipes, can solve the problems of hole blockage, low oxygenation efficiency, inconvenient use, etc. Effect

Inactive Publication Date: 2005-06-01
郑煜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aeration pipes used in the existing sewage biochemical treatment projects mainly include drilled aeration pipes and microporous aeration hoses. The former has low oxygenation efficiency, and the holes are easily blocked by microorganisms and sludge during use, which affects Although the latter has higher oxygenation efficiency, the current production cost is high and the price is expensive, so it has not been popularized and applied.
Although the patent number ZL96241466.2 of the "cloth-wrapped drilling aeration tube" and the patent number ZL97206354.4 of the "aeration and oxygenation perforation tube for biochemical treatment of sewage" have solved the problem of hole blockage to a certain extent, But it is troublesome to make and inconvenient to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The raw material weight of the self-closing perforated aeration pipe of the present invention consists of: VA content is 5%, and melt index (MFI) is 95 parts of acetic acid-vinyl acetate copolymer (EVA) of 1g / min, and melt index (MFI) is 10g 5 parts of polyolefin / min, 6 parts of maleic acid grafted polyolefin with polar maleic acid content of 6%, 0.5 part of chemical crosslinking agent DCP, 5 parts of talcum powder with an average particle size of 45 μ, antifungal agent, The right amount of dyes.

Embodiment 2

[0016] The raw material weight of the self-closing perforated aeration pipe of the present invention consists of: VA content is 28%, melt index (MFI) is 5 parts of acetic acid-vinyl acetate copolymer (EVA) of 8g / min, and melt index (MFI) is 1g 95 parts of polyolefin / min, 1 part of maleic acid grafted polyolefin with polar maleic acid content of 0.2%, 0.5 part of chemical crosslinking agent DCP, 35 parts of kaolin with an average particle size of 5μ, lubricants and dyes Appropriate amount.

Embodiment 3

[0018] The raw material weight of the self-closing perforated aeration tube of the present invention consists of: 70 parts of acetic acid-vinyl acetate copolymer (EVA), select EVA630 produced by U.S. Dupont Chemical Company (Dupont), VA content 1%, MFI 1.8g / min; 25 parts of high-pressure polyethylene (LDPE), its MFI is 7g / min; 5 parts of maleic acid grafted polyolefin with 6% maleic acid content, 1.5 parts of chemical crosslinking agent DCP, 15 parts of calcium carbonate with an average particle size of 10 μ Parts, appropriate amount of lubricant, anti-fungal agent, antioxidant, and dye.

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Abstract

The self-closed perforated aeration pipe has hole or cut in the pipe wall and is made of material comprising acetic acid-ethyl acetate copolymer, polyolefin, compatibilizing agent, chemical cross-linking agent, inorganic mineral stuffing and additive. Under non-working state, the self-closed perforated aeration pipe has its hole or cut closed by the elasticity to avoid permeation. Under work state, active gas is introduced into the pipe to make the hole or cut opened to reach the designed air outlet amount. The present invention can avoid the micro hole jamming, and has high oxygen inflating efficiency, long service period and low production cost.

Description

Technical field [0001] The invention relates to the technical field of aeration equipment for sewage biochemical treatment, in particular to a perforated aeration tube. Background technique [0002] The aeration tube is an essential air distribution and oxygenation equipment in sewage biochemical treatment, and its efficiency directly affects the effect of sewage treatment. The aeration pipes used in the existing sewage biochemical treatment projects mainly include drilled aeration pipes and microporous aeration hoses. The former has low oxygenation efficiency, and the holes are easily blocked by microorganisms and sludge during use, which affects Although the latter has higher oxygenation efficiency, the current production cost is high and expensive, so it has not been popularized and applied. Although the patent number ZL96241466.2 of the "cloth-wrapped drilling aeration tube" and the patent number ZL97206354.4 of the "aeration and oxygenation perforation tube for biochem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/20C02F7/00
CPCY02W10/10
Inventor 郑煜齐占度周晓辉
Owner 郑煜
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