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A kind of biological carrier for biological filter and preparation method thereof

A biological carrier and biological filter technology, which is applied in the treatment of granular microbial carriers, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of limited adsorption capacity, limited application in the field of sewage treatment, etc., and achieve rich surface functional groups. , Significantly improve the industrial application value and the effect of strong application potential

Active Publication Date: 2021-04-09
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption capacity of the raw hydrothermal carbon prepared so far is limited, which limits its application in the field of sewage treatment.
[0006] At present, there is no report on the combination of construction waste and hydrothermal carbon to prepare biological carriers for biofilters

Method used

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  • A kind of biological carrier for biological filter and preparation method thereof
  • A kind of biological carrier for biological filter and preparation method thereof
  • A kind of biological carrier for biological filter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Use foamed concrete construction waste as raw material, crush and sieve it into construction waste particles with a particle size of about 2-8mm, and set aside;

[0030] The organic waste liquid produced in the production process of a domestic chemical company is used as the hydrothermal carbon source. The main components of the organic waste liquid are chlorine-containing organic substances, including octachloropentacyclododecane, endosulfan II, ethyl propionate, Pentachloropropane, tetrachloropropene and octachloropropane, etc. (such as figure 1 As shown, the waste liquid is viscous and difficult to be atomized and incinerated. The traditional water treatment processes such as oxidation, adsorption, extraction, and distillation cannot be effectively treated. The problem that makes enterprise environmental protection pressure bigger), adjust the water content of this organic waste liquid, make its water content be about 20wt%, standby;

[0031] Disperse the above-ment...

Embodiment 2

[0037] Use foamed concrete construction waste as raw material, crush and sieve it into construction waste particles with a particle size of about 2-8mm, and set aside;

[0038] A chemical company in Zhejiang produced 3m in the production process 3 / d nonylphenol polyoxyethylene ether waste liquid is hydrothermal carbon source (water content is 13wt%), for subsequent use;

[0039] The above-mentioned construction waste particles are dispersed in nonylphenol polyoxyethylene ether waste liquid (the mass ratio of construction waste particles to nonylphenol polyoxyethylene ether waste liquid is 12:1), and Zhan construction waste particles and nonyl The total mass of phenol polyoxyethylene ether waste liquid is 10% oxalic acid (catalyst), then stirred and reacted at 160° C. for 6 hours, collected the solid product, and the collected solid was washed and dried to obtain a hydrothermal compound grown on the surface of construction waste. Charcoal biological carrier.

[0040] image 3...

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Abstract

The invention discloses a biological carrier used in a biological filter and a preparation method thereof. The biological carrier is composed of construction waste and hydrothermal charcoal grown on its surface. The biological carrier is prepared by firstly dispersing construction waste particles in an aqueous solution containing hydrothermal carbon source, then carrying out hydrothermal carbonization reaction at 120-300 DEG C for 0.5-24 hours in the presence of a catalyst, and washing and drying the obtained product. The biological carrier provided by the present invention has the advantages of high mechanical strength, large specific surface area, rich surface functional groups, strong adsorption to biofilm, and reliable film formation. It is suitable for microbial growth and can be used in biological filters. Potential application; In addition, the preparation method of the present invention also has the advantages of simple operation, mild reaction conditions, no need for special equipment and harsh conditions, wide source of raw materials, low production cost, and easy large-scale production.

Description

technical field [0001] The invention relates to a biological carrier and a preparation method thereof, in particular to a biological carrier used in a biological filter and a preparation method thereof, belonging to the technical field of sewage treatment. Background technique [0002] Biological filter has been used in the biological treatment of urban sewage and industrial wastewater for more than 100 years. It belongs to a non-submerged solid bed biological treatment process and has the advantages of simple operation and energy saving. The biological carrier is the core component of the biological filter, and its performance directly affects the effect of the biological filter on sewage treatment. At present, crushed stone or plastic is usually used as the biological carrier. When crushed stone is used as the biological carrier, the load of the biofilter is low, the floor area is large, the carrier demand is high, and the specific surface area of ​​the crushed stone is sm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/34
CPCC02F3/00C02F3/34C02F2003/003
Inventor 张文启郝介秀罗婧一陈鹏
Owner SHANGHAI UNIV OF ENG SCI
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