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Modified bio-filter stuffing

A biological filter and modification technology, which is applied to the modified filler of biological aerated filter and its processing field, can solve the problems of weak combination of microorganisms and carriers, weak adsorption capacity, limited effect, etc., to improve physical and chemical Performance and washdown resistance, efficiency improvement, load capacity improvement effect

Inactive Publication Date: 2009-06-24
CAPITAL GREINWORTH ENVIRONMENTAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the adsorption capacity is not strong
In the adsorption method, the combination of microorganisms and the carrier is not firm, easy to fall off, and the amount of adsorption is small, so its effect is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Filler modification: take 10kg of ceramsite with a particle size of 3 to 4 mm, rinse with water, soak with 5% HCl for 2 hours, wash with water until neutral, soak with 5% NaOH for 2 hours, wash with water until neutral, and place in Dry in an oven at 105° C. for 2 hours; put the dried ceramsite into a dilute aqueous solution containing 0.008% of cationic polyacrylamide without cooling, and immerse it for 24 hours. Place the impregnated ceramsite in a filter screen and rinse it once with 1 liter of water to remove the solution on the outer surface of the ceramsite and drain the water. Put it in an oven and gradually increase the temperature by 10 °C per hour. After the temperature reaches 105 °C, it is kept for 1.5 hours, and then it is taken out and cooled to become a modified ceramsite filler.

[0032] Microbial immobilization: In a 20-liter culture barrel, add the modified ceramsite carrier, and add the cultured activated sludge supernatant, which contains denitrifyin...

Embodiment 2

[0035] Filler modification: Take 10kg of volcanic rock particles with a particle size of 3 to 5 mm, rinse with water, soak in 8% HCl for 2 hours, wash with water until neutral, soak with 8% NaOH for 2 hours, wash with water until neutral, and place in Dry in an oven at 105° C. for 1.5 hours; put the dried volcanic rock particles into a dilute aqueous solution containing 0.007% of cationic polyacrylamide before cooling, and soak for 24 hours. The impregnated volcanic rock particles are placed in a filter screen and rinsed once with 1 liter of water to remove the solution on the outer surface of the volcanic rock particles and drain the water. Put it in an oven and gradually increase the temperature by 10 °C per hour. After the temperature reaches 105 °C, it is kept for 1 hour, and it is taken out and cooled to become a modified volcanic rock filler.

[0036] Microbial immobilization: In a 20-liter culture barrel, the modified volcanic rock carrier is added, and the cultured act...

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Abstract

The invention discloses a modified biological filtering pool filler and relates to a modified filler applied to an aerated biological filtering pool and a method for processing the same. An inorganic filler ceramic particle, lava or porous ceramic, which is used as a carrier, is subjected to pickling, alkali cleaning, drying, sterilization and other processing procedures and is dipped in a dilute aqueous solution containing cationic polyacrylamide (Polyacrylamide, abbreviated as PAM) so that the inner surface of the filler is modified to obtain an inorganic carrier of which the surface of an inner hole is formed with a polymer molecular body with positive charge; and the inorganic carrier is domesticated to generate the immobilized microorganism filler. Through double functions of physical adsorption and ionic bond combination, the filler improves physicochemical performance and washing resistance performance of the immobilized microorganism for inorganic carrier, is favorable for improving loading amount of microorganism and domestication and proliferation of the microorganism, saves the cubage of a reactor, shortens reaction time, improves efficiency biological denitrification and saves investment.

Description

technical field [0001] The invention relates to filter fillers, in particular to modified fillers applied to biological aerated filters and a processing method thereof. Background technique [0002] The increasingly serious environmental problems urgently require the development of high-efficiency new technologies for environmental management. Therefore, in recent years, immobilized microbial technology has become one of the hot topics studied by scholars from all over the world. Immobilized microorganism technology is to use chemical or physical means to locate free cells in a limited space area, and make it a method that is not suspended in water and still maintains biological activity and can be reused. It is widely used in water treatment technology. Prospects. Compared with traditional physical and chemical methods, immobilized microorganism technology has the advantages of high treatment efficiency, strong stability, no secondary pollution, and low energy consumption;...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 朱加征吴科昌沈骏张磊华卫
Owner CAPITAL GREINWORTH ENVIRONMENTAL CORP
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