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Porous biological filter material for biological aeration filter tank and preparation method of porous biological filter material

A technology of biological aeration filter and biological filter material, which is applied in the field of porous biological filter material and its preparation, can solve the problems of microbial loss, low concentration of accumulated microorganisms, small specific surface area, etc., and achieve well-developed micropores, good chemical stability, The effect of large specific surface area

Active Publication Date: 2022-07-15
安徽能泰高科环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a porous biological filter material for biological aeration filter and its preparation method, which solves the problem that the current porous biological filter material has a small specific surface area, a low concentration of accumulated microorganisms, and a large pore size is prone to microorganisms. Churn phenomenon

Method used

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  • Porous biological filter material for biological aeration filter tank and preparation method of porous biological filter material
  • Porous biological filter material for biological aeration filter tank and preparation method of porous biological filter material
  • Porous biological filter material for biological aeration filter tank and preparation method of porous biological filter material

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Effect test

Embodiment 1

[0056] A preparation method of a porous biological filter material for a biological aeration filter, specifically comprising the following steps:

[0057] The microbial framework, manganese chloride, ethanol, and deionized water were mixed uniformly, ultrasonically oscillated for 30 minutes, refluxed for 60 hours at a temperature of 145 °C, cooled to room temperature, filtered to remove the filtrate, and the filter cake was dispersed in deionized water. Add porous base material, under the condition of temperature of 80℃ and pH value of 8, after ultrasonic vibration for 3h, filter and dry, and calcinate for 1h under nitrogen atmosphere with temperature of 700℃ to obtain porous biological filter material.

[0058] Wherein, the porous base material is made by the following steps:

[0059] Step A1: Add fly ash, calcium carbonate, sodium bicarbonate, sodium silicate and deionized water into the stirring tank, and under the condition of rotating speed of 800r / min, after stirring for...

Embodiment 2

[0070] A preparation method of a porous biological filter material for a biological aeration filter, specifically comprising the following steps:

[0071] Mix the microbial framework, manganese chloride, ethanol, and deionized water evenly, oscillate ultrasonically for 35 minutes, reflux for 65 hours at a temperature of 150 °C, and then drop to room temperature, remove the filtrate by filtration, and disperse the filter cake in deionized water. Add porous base material, under the condition of temperature of 85℃, pH value of 8, after ultrasonic vibration for 4h, filter and dry, and calcinate for 1.5h under nitrogen atmosphere with temperature of 700℃ to obtain porous biological filter material.

[0072] Wherein, the porous base material is made by the following steps:

[0073] Step A1: Add fly ash, calcium carbonate, sodium bicarbonate, sodium silicate, deionized water into the stirring tank, and under the condition of rotating speed of 900r / min, after stirring for 1.3h, add th...

Embodiment 3

[0084] A preparation method of a porous biological filter material for a biological aeration filter, specifically comprising the following steps:

[0085] The microbial framework, manganese chloride, ethanol, and deionized water were mixed uniformly, ultrasonically oscillated for 40 minutes, refluxed for 70 hours at a temperature of 155 °C, cooled to room temperature, filtered to remove the filtrate, and the filter cake was dispersed in deionized water. Add porous base material, under the condition of temperature of 90℃ and pH value of 8.5, after ultrasonic vibration for 5h, filter and dry, and calcinate for 2h under nitrogen atmosphere with temperature of 700℃ to obtain porous biological filter material.

[0086] Wherein, the porous base material is made by the following steps:

[0087] Step A1: Add fly ash, calcium carbonate, sodium bicarbonate, sodium silicate and deionized water into the stirring tank, and under the condition of rotating speed of 1000r / min, after stirring ...

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Abstract

The preparation method comprises the following steps: blending fly ash, calcium carbonate, sodium bicarbonate, sodium silicate and deionized water, preparing ceramic particles by using the calcium carbonate as a fluxing agent, the sodium bicarbonate as a pore-forming agent and the sodium silicate as a binder, sintering the ceramic particles, and sintering the sintered ceramic particles to obtain the porous biological filter material for the biological aerated filter. The preparation method comprises the following steps: carrying out surface treatment by using hydrochloric acid to activate surface hydroxyl groups, carrying out surface treatment by using KH560 to graft epoxy groups on the surfaces of ceramic particles to prepare a porous base material, compounding a microbial framework with the porous base material, and reacting amino groups on the microbial framework with the epoxy groups on the surface of the porous base material to prepare the porous base material. The microbial framework is grafted on the surface of the porous base material, the specific surface area of the microbial framework is large, meanwhile, manganese ions needed by microbial growth can be provided, and the number of microorganisms is greatly increased.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a porous biological filter material used in a biological aeration filter tank and a preparation method thereof. Background technique [0002] With the development of society, the pollution of water resources has become more and more serious. According to incomplete statistics, more than 70% of groundwater is seriously polluted, and the purification of sewage has become an urgent problem to be solved; aerated biological filter is a new type of sewage treatment. The technology is to fill the filter tank with a certain amount of granular filter material with small particle size. The surface of the filter material grows with biofilm, and the inside of the filter tank is aerated. When the sewage flows through, the strong oxidation of the high concentration of biofilm on the filter material is used. The degradation ability can quickly purify the sewage, and the filter material...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B33/135C04B33/13C02F3/10
CPCC04B33/1352C04B33/13C04B38/009C02F3/104C04B2235/3208C04B2235/3201C04B2235/6562C04B2235/6567C04B2235/661C04B38/0054Y02W10/10
Inventor 祁世芳刘鹏杨积发于志勇陈明亮
Owner 安徽能泰高科环保技术有限公司
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