Biofilm suspending carrier and its application and method for biological contact oxidation treatment of wastewater

A suspension carrier, biofilm technology, applied in sustainable biological treatment, biological water/sewage treatment, aerobic process treatment, etc., can solve the problem of poor film hanging performance, small biofilm carrying capacity, and overall biochemical treatment efficiency needs to be improved and other problems, to achieve the effect of improving the surface performance, improving the surface space structure, and improving the effect of wastewater treatment.

Active Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a biofilm suspension carrier and its application and A method for biological contact oxidation treatment of wastewater. The surface space structure of the biofilm suspension carrier is more reasonable, the surface performance is effectively improved, and the rapid growth of microorganisms can be promoted, which is conducive to the formation of microorganisms; and the carrier also has biofilm suspension. The advantages of large load capacity, difficult biofilm falling off, large total amount of microorganisms in the biochemical reactor, high overall biochemical treatment efficiency, long service life, and low price have significantly improved the wastewater treatment effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Weigh the raw materials used to make the carrier according to the following components and proportions, wherein, in weight ratio, polyethylene: polyvinyl alcohol: waste refining catalyst: powdered activated carbon: kaolin = 82:4:5:5: 4. Wherein the specific composition of the waste refining catalyst is as follows: based on the total weight of the catalyst, the content of aluminum oxide is 52.6% by weight, the content of silicon dioxide is 40.8% by weight, and the content of lanthanum oxide is 1.2% by weight. The content of cerium is 2.3% by weight, the content of ferric oxide is 1.2% by weight, the content of nickel oxide is 1.5% by weight, and the content of vanadium oxide is 0.4% by weight; the average particle diameter D50 of oil refining waste catalyst is 25 μm, powdered activated carbon The mesh number of kaolin is 250-300 mesh, and the mesh number of kaolin is 270-300 mesh.

[0054] (2) melting polyethylene and polyvinyl alcohol to obtain a molten liquid;

...

Embodiment 2

[0060] (1) Weigh the raw materials used to make the carrier according to the following components and proportions, wherein, in weight ratio, polypropylene: polyglycolic acid: oil refining waste catalyst: powdered activated carbon: diatomaceous earth = 90: 3: 2: 3:2. Wherein the specific composition of the waste refining catalyst is as follows: based on the total weight of the catalyst, the content of aluminum oxide is 55% by weight, the content of silicon dioxide is 36.6% by weight, the content of lanthanum oxide is 1.5% by weight, The content of cerium is 2.5% by weight, the content of ferric oxide is 1.9% by weight, the content of nickel oxide is 1.7% by weight, and the content of vanadium oxide is 0.8% by weight; the average particle diameter D50 of oil refining waste catalyst is 25 μm, and the powdered activated carbon The mesh number of diatomite is 250-300 mesh, and the mesh number of diatomaceous earth is 230-280 mesh.

[0061] (2) melting polypropylene and polyglycoli...

Embodiment 3

[0067] (1) Weigh the raw materials used to make the carrier according to the following components and proportions, wherein, in weight ratio, polyethylene: polyhydroxybutyrate: waste refining catalyst: powdered activated carbon: calcium carbonate=80:5:5 :4:6. Wherein the specific composition of the waste refining catalyst is as follows: based on the total weight of the catalyst, the content of aluminum oxide is 48% by weight, the content of silicon dioxide is 44.2% by weight, the content of lanthanum oxide is 0.9% by weight, The content of cerium is 1.8% by weight, the content of ferric oxide is 2.2% by weight, the content of nickel oxide is 2.1% by weight, and the content of vanadium oxide is 0.8% by weight; the average particle diameter D50 of oil refining waste catalyst is 25 μm, powdered activated carbon The mesh number of calcium carbonate is 250-300 mesh, and the mesh number of calcium carbonate is 240-300 mesh.

[0068] (2) melting polyethylene and polyhydroxybutyrate t...

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Abstract

The invention relates to the field of wastewater biological treatment, and discloses a biofilm suspension carrier and its application and a method for biological contact oxidation treatment of wastewater. The biofilm suspension carrier includes organic polymer materials, microbial degradable polymers, catalysts, powdered activated carbon and inorganic materials , based on the weight of the biofilm suspension carrier, the contents of organic polymer materials, microbial degradable polymers, catalysts, powdered activated carbon and inorganic materials are respectively 60-95% by weight, 1-11% by weight, and 1-10% by weight , 1‑10% by weight and 0.5‑10% by weight. The surface space structure of the biofilm suspension carrier of the present invention is more reasonable, and the surface performance is effectively improved, which can promote the rapid growth of microorganisms, is beneficial to the formation of microorganisms, has the advantages of large biofilm loading capacity, biofilm is not easy to fall off, biochemical reactor The total amount of microorganisms in the medium is large, and the overall biochemical treatment efficiency is high.

Description

technical field [0001] The invention relates to the field of wastewater biological treatment, in particular to a biofilm suspension carrier and its application in wastewater biochemical treatment and a method for biological contact oxidation treatment of wastewater. Background technique [0002] The biological contact oxidation method is a kind of wastewater biological treatment method derived from the biofilm method. It is a biological treatment technology between the activated sludge method and the biological filter, that is, a certain amount of biofilm carriers are filled in the biological contact oxidation tank. , using the biofilm grown on the carrier and sufficient oxygen supply, through biological oxidation, the pollutants in the wastewater are oxidized and decomposed to achieve the purpose of wastewater purification. The biological contact oxidation method has the advantages of both the activated sludge method and the biofilm method. This process has the characterist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/08C02F3/10C02F3/34
CPCC02F3/08C02F3/105C02F3/34Y02W10/10
Inventor 桑军强
Owner CHINA PETROLEUM & CHEM CORP
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