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Biological fluidized bed carrier

A technology of biological fluidized bed and carrier, applied in biological water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of no combination of biological fluidized bed carrier and magnetic field, technology disclosure, etc., to achieve Improve biodegradability, prevent carrier loss, and improve fluidization performance

Pending Publication Date: 2019-10-08
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is currently no published technology for combining biological fluidized bed carriers with magnetic fields

Method used

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Embodiment 1

[0029] HNO with a concentration of 6mol / L 3 The solution was used as an oxidation medium to soak the granular activated carbon for 24 hours. The soaked granular activated carbon was washed in distilled water until the pH value was neutral, and then baked at a temperature of 60°C for 2 hours; mass of MnCl 2 4H 2 O and FeCl 3 , the MnCl 2 4H 2 O and FeCl 3 Then dissolve in distilled water, and add the dried granular activated carbon into the aqueous solution to stir and mix. Put the mixed solution in a water bath and heat it to 60°C. Stir continuously during the heating process, and then add dropwise to the mixed solution with a concentration of 3mol / L of NaOH solution until a precipitate is formed. After the precipitation is formed, continue to drop the NaOH solution with a concentration of 3mol / L until the pH value of the mixed solution is 11. After stirring, heat the mixed solution to 100°C in a water bath. During the heating process Stir continuously for 4 hours in th...

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Abstract

The invention discloses a biological fluidized bed carrier. The biological fluidized bed carrier is composed of a plurality of granular activated carbons and a magnetic layer wrapping the granular activated carbons. According to the biological fluidized bed carrier, a MnFe<2>O<4> magnetic nano particle layer is wrapped the surfaces of the granular activated carbons, the MnFe<2>O<4> magnetic nano particle layer enables the carrier to generate a magnetic field, the magnetic field does not affect the adsorption abilities of the granular activated carbons to microorganisms in sewage, at the same time, the degradation rate of the carrier to phenolic substances in the sewage can be further increased, the biodegradation abilities of the microorganisms adsorbed by the granular activated carbons are improved, and the adsorption and separation functions of organic matter in the sewage of MnFe<2>O<4> magnetic nano particles matched with the granular activated carbons can greatly improve the purification ability of a biological fluidized bed to the sewage and improve the degradation efficiency.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a biological fluidized bed carrier and a preparation method thereof. Background technique [0002] Biological fluidized bed is a sewage biofilm technology. The core component of biological fluidized bed is the carrier filled in the bed. Traditional biological fluidized bed often uses quartz sand, anthracite, coke, granular activated carbon, and polystyrene balls as carriers. , the surface of the carrier is covered with biofilm. When the sewage flows through the biological fluidized bed from bottom to top at a certain flow rate, the carrier is in a fluidized state, adsorbing microorganisms, and using the biodegradability of microorganisms to decompose small molecular organic matter in sewage , to achieve the purification of sewage. [0003] The carrier used in the traditional biological fluidized bed has a large specific surface area, good contact with the biofilm, good hydrophili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F1/48C02F1/28
CPCC02F3/34C02F1/481C02F1/283
Inventor 李驰昊胡浩林王维徐自享周围
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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