Preparation method of biofilm carrier

A biofilm carrier and preparation step technology, applied in the field of water treatment, can solve the problems of affecting the use effect of biofilm, high difficulty in attaching microorganisms, poor hydrophilicity of the carrier, etc., so as to reduce the difficulty of attachment, shorten the film hanging time, and achieve biocompatibility. good effect

Active Publication Date: 2017-10-17
神美科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is aimed at the poor compatibility between the current common biofilm carriers and microorganisms, which leads to high difficulty in microbial attachment, long film-hanging time, and poor hydrophilicity of the carrier, making the surface difficult to wet, which affects the use of biofilms The defect of effect, a kind of preparation method of biofilm carrier is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] Weigh 5kg of diatomaceous earth and spray it with liquid nitrogen to freeze for 3min, transfer the frozen diatomaceous earth into a stone mortar, mash it with a stone pestle for 2h, and then put the mashed diatomaceous earth into an oven at 110°C Dry for 40 minutes. After drying, move to a pulverizer and continue to pulverize for 30 minutes, and screen out diatomaceous earth particles with a particle size of 3mm; mix diatomaceous earth particles with a mass concentration of 4g / L dopamine solution at a mass ratio of 1:5 Obtain the mixed solution, and adjust the pH of the mixed solution to 8.2 with a concentration of 0.5mol / L sodium hydroxide solution, and then transfer the mixed solution into an ultrasonic oscillator, ultrasonically shake at a frequency of 50kHz for 30min, then stand for 2h, filter and separate to obtain a filter residue ; Weigh 20g of white phosphorus and ignite it to burn, collect the burned product, mix the burned product with absolute ethanol at a mass...

example 2

[0028] Weigh 4kg of diatomaceous earth and spray it with liquid nitrogen to freeze for 2min, transfer the frozen diatomaceous earth into a stone mortar, mash it with a stone pestle for 1h, and then put the mashed diatomaceous earth into an oven at 105℃ Dry for 30 minutes. After drying, move to a pulverizer and continue to pulverize for 20 minutes. Diatomite particles with a particle size of 1mm are screened out; the diatomite particles are mixed with a dopamine solution with a mass concentration of 4g / L according to a mass ratio of 1:5 Obtain the mixed solution, and adjust the pH of the mixed solution to 8.0 with a concentration of 0.5mol / L sodium hydroxide solution, and then transfer the mixed solution into an ultrasonic oscillator, ultrasonically oscillate at a frequency of 40kHz for 20 minutes, then stand for 1h, filter and separate to obtain a filter residue ; Weigh 10g of white phosphorus and ignite it to burn, collect the burned product, mix the burned product with absolut...

example 3

[0030] Weigh 4kg of diatomaceous earth and spray it with liquid nitrogen to freeze for 2 minutes, transfer the frozen diatomaceous earth into a stone mortar, mash it with a stone pestle for 1 hour, and then put the mashed diatomaceous earth into an oven at 107℃ Dry for 35 minutes. After drying, move to a pulverizer and continue to pulverize for 25 minutes, and screen out diatomaceous earth particles with a particle size of 2mm; mix the diatomaceous earth particles with a dopamine solution with a mass concentration of 4g / L according to a mass ratio of 1:5 Obtain the mixed solution, and adjust the pH of the mixed solution to 8.1 with a concentration of 0.5mol / L sodium hydroxide solution, then transfer the mixed solution into an ultrasonic oscillator, ultrasonically oscillate at a frequency of 45kHz for 25min, then stand for 2h, filter and separate to obtain a filter residue ; Weigh 15g of white phosphorus and ignite it to burn, collect the burned product, mix the burned product wi...

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Abstract

The invention relates to a preparation method of a biofilm carrier and belongs to the technical field of water treatment. The preparation method includes: using diatomite as a template, and forming a layer of chelated coating adsorption calcium ions on the surface of the template through dopamine; burning white phosphorus to generate phosphorus pentoxide to react with alcohol to generate phospholipid; under action of ammonia water, and hydrolyzing phospholipid, wherein hydroxyl on a hydrolysis product are slowly combined with the calcium ions to generate crystal nuclei which grow gradually to finally obtain a carrier crude product with hydroxyl calcium phosphate on the surface. Hydroxyl calcium phosphate is high in biocompatibility, so that the problem that conventional biofilm carriers are low in compatibility with microorganisms is solved; saponin and organic carboxylic acid in biological fermentation liquid increase number of hydrophilic groups on the surface of the carrier under action of the microorganisms, improve wettability of the surface of the carrier and increase probability that sewage contacts with the carrier; nutritional substances provide both a nutritional source and more adhesion sites, so that adhesion difficulty of the microorganisms is lowered, film forming time is shortened, and the biofilm carrier has wide application prospect.

Description

Technical field [0001] The invention relates to a preparation method of a biofilm carrier, and belongs to the technical field of water treatment. Background technique [0002] The biofilm method is a waste water treatment method that uses microorganisms that are attached to certain solid surfaces, namely microbial membranes, to oxidize and degrade organic matter in the waste water through the conversion of solid and liquid substances. In recent years, the biofilm method has been widely used in sewage / wastewater treatment due to its high treatment efficiency, strong impact load resistance, stable operation, small sludge output, and economic and energy-saving advantages. Commonly used biofilm reactors mainly include biological filter, biological turntable, biological contact oxidation pond and biological fluidized bed. Biofilm is an ecosystem composed of highly dense aerobic bacteria, anaerobic bacteria, facultative bacteria, fungi, protozoa and algae. The solid medium attached to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F3/10C02F3/30
CPCB01J20/14B01J20/22B01J20/24B01J20/262B01J2220/46B01J2220/4806B01J2220/4812B01J2220/4825B01J2220/4868C02F3/105C02F3/30C02F2003/001C02F2305/06Y02W10/10
Inventor 李小兰林晨
Owner 神美科技有限公司
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