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Nitrogen removal and phosphorus removal active biological carrier for sewage treatment, and preparation method thereof

A biological carrier, nitrogen and phosphorus removal technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, granular microbial carrier treatment, etc., can solve the problem of poor hydrophilicity and biological affinity, affecting biological carriers Use efficiency, low number of film-hanging microorganisms, etc., to achieve the effect of enhancing hydrophilic performance, facilitating rapid attachment, and good denitrification and denitrification effects

Active Publication Date: 2019-11-05
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used biological carriers are artificially synthesized organic carriers such as polystyrene, polyethylene, polyurethane, etc., which have the advantages of small density, large specific surface area, easy control of shape, and low energy consumption for reactor start-up, but there are also some disadvantages: Poor water and biological affinity, low number of membrane-hanging microorganisms, and poor activity, these problems greatly affect the use efficiency of biological carriers and increase operating costs

Method used

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  • Nitrogen removal and phosphorus removal active biological carrier for sewage treatment, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The parts by weight of each preparation raw material of the biological carrier of the present embodiment are as follows: 75 parts of high-density polyethylene, 0.08 part of polyhydroxy fatty acid amide, 0.9 part of compound enzyme, 15 parts of rust, 20 parts of modified loofah, shell powder / oxidized 8 parts of zinc hollow microspheres.

[0030] The preparation of shell powder / zinc oxide is as follows: take the shell powder at a heating rate of 10 °C / min to 650 °C, and calcinate it in an argon atmosphere at 650 °C for 3 h, take it out after cooling, and put it in a pulverizer to crush it until it exceeds 600 °C. Mesh sieve, then placed in an oxygen atmosphere at 1250 ° C for 1 hour, cooled, taken out, and placed in a pulverizer to pulverize until passing through a 1000 mesh sieve to obtain pretreated shell powder. Add zinc nitrate per liter of ethanol solution with a volume concentration of 65% to prepare a zinc salt solution with a concentration of 2mol / L, add 15g of pr...

Embodiment 2

[0036] The parts by weight of each preparation raw material of the biological carrier of the present embodiment are as follows: 65 parts of high-density polyethylene, 0.10 part of polyhydroxy fatty acid amide, 0.5 part of compound enzyme, 13 parts of rust, 25 parts of modified loofah, shell powder / oxidized 10 parts of zinc hollow microspheres.

[0037] The preparation of shell powder / zinc oxide is as follows: take the shell powder at a heating rate of 20 °C / min to 650 °C, and calcinate it in an argon atmosphere at 650 °C for 4 hours, take it out after cooling, and put it in a pulverizer to pulverize it until it exceeds 600 °C. Mesh sieve, then placed in an oxygen atmosphere at 1250 ° C for 1 hour, cooled, taken out, and placed in a pulverizer to pulverize until passing through a 1000 mesh sieve to obtain pretreated shell powder. Add zinc sulfate to each liter of ethanol solution with a volume concentration of 65% to prepare a zinc salt solution with a concentration of 2mol / L, ...

Embodiment 3

[0043] The parts by weight of each preparation raw material of the biological carrier of the present embodiment are as follows: 70 parts of high-density polyethylene, 0.12 part of polyhydroxy fatty acid amide, 0.8 part of compound enzyme, 5 parts of rust, 30 parts of modified loofah, shell powder / oxidized 12 parts of zinc hollow microspheres.

[0044] The preparation of shell powder / zinc oxide is as follows: Take the shell powder to 650°C at a heating rate of 15°C / min, and calcinate it in an argon atmosphere at 650°C for 3.5h, take it out after cooling, and put it in a pulverizer to pulverize it until 600-mesh sieve, and then placed in an oxygen atmosphere at 1250°C for 1 hour, cooled, taken out, and pulverized in a pulverizer until it passed a 1,000-mesh sieve to obtain pretreated shell powder. Add zinc sulfate to each liter of ethanol solution with a volume concentration of 65% to prepare a zinc salt solution with a concentration of 2mol / L, add 14g of pretreated shell powder...

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Abstract

The invention relates to the technical field of sewage treatment, particularly to a nitrogen removal and phosphorus removal active biological carrier for sewage treatment, and a preparation method thereof, wherein the biological carrier comprises the following raw materials by weight: 65-75 parts of high-density polyethylene, 0.08-0.12 part of polyhydroxyl fatty amide, 0.5-0.9 part of compound enzyme, 5-15 parts of iron rust, 20-30 parts of modified Retinervus Luffae Fructus, and 8-12 parts of shell powder / zinc oxide hollow microspheres, wherein the preparation method of the shell powder / zincoxide hollow microspheres comprises: carrying out a microwave reaction on calcined shell powder and a metal zinc salt in a nitrogen atmosphere, spraying the obtained material into liquid nitrogen, andsolidifying. According to the present invention, the nitrogen removal and phosphorus removal effect is enhanced by using the modified Retinervus Luffae Fructus and the shell powder / zinc oxide hollowmicrospheres, and the surface is subjected to plasma treatment and immersion hydrophilic treatment, such that the product has characteristics of rapid film forming, good hydrophilicity, high biological activity and long service life.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a nitrogen and phosphorus removal active biological carrier for sewage treatment and a preparation method thereof. Background technique [0002] With the rapid growth of my country's economy, the process of urbanization and industrialization has accelerated significantly. As of 2018, my country's urbanization rate has reached 59.58%, and the urban permanent population has reached 770 million. With the accelerated development of urbanization and the further expansion of urban scale, the problem of urban water shortage is becoming more and more serious, and the discharge of large amounts of urban sewage, especially the discharge of inorganic nutrients such as nitrogen and phosphorus in a large amount of domestic sewage and industrial sewage is becoming more and more serious. Nitrogen and phosphorus are the key factors of water eutrophication, which are very difficult to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/16C02F101/10
CPCC02F3/342C02F2003/001C02F2101/105C02F2101/16C02F2203/006
Inventor 王国胜
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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