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Honeycomb-shaped microorganism carrier and preparation method thereof

A microbial carrier and honeycomb-shaped technology, which is applied in the field of cellular microbial carrier and its preparation, can solve the problems that the immobilized microbial technology cannot be widely used in waste water, the microbial growth environment is single, and the cost of materials is high, so as to achieve low material cost and high biomass. Multiple, long service life effect

Inactive Publication Date: 2013-07-24
TAIYUAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the carriers commonly used for immobilizing microorganisms include coke, gravel, ceramic rings, plastic fillers, etc., but these carriers have low mechanical strength, are easy to disintegrate, and have a short service life. They can only form biofilms on the surface, and the biomass is relatively small. Material costs High, and the microbial growth environment is relatively simple
These problems have led to the failure of immobilized microorganism technology to be widely used in the treatment of actual wastewater.

Method used

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  • Honeycomb-shaped microorganism carrier and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] A honeycomb microbial carrier is composed of the following raw materials in mass percentage: 60% of domestic sewage sludge, 20% of straw or sawdust, 12% of coal tar or epoxy resin, and 8% of calcium carbonate or hydroxyapatite. The method for preparing the honeycomb-shaped microbial carrier includes the following steps: (1) drying and grinding domestic sewage sludge and straw or sawdust, and the particle size is subject to 100% passing through a 100-mesh sieve; (2) drying the sludge, straw Or sawdust, coal tar or epoxy resin, calcium carbonate or hydroxyapatite are mixed according to the above mass percentage; (3) The mixture obtained in step (2) is fully stirred and kneaded in a kneader, and then the kneaded plastic clay The material is molded with a honeycomb steel mold on an extruder with a pressure of 10Mpa to make a cylindrical or strip-shaped honeycomb body with a smooth surface and a complete honeycomb channel structure, and then dried at 110°C for 20 hours; (4) T...

Embodiment 2

[0019] A honeycomb microbial carrier is composed of the following raw materials in mass percentage: 50% of industrial wastewater sludge, 30% of waste paper, 18% of methyl cellulose or phenolic resin, and 2% of disodium edetate. The method for preparing the honeycomb microbial carrier includes the following steps: (1) drying and grinding industrial wastewater sludge and waste paper, and the particle size shall be 100% through a 100-mesh sieve; (2) industrial wastewater sludge, Waste paper, methyl cellulose or phenolic resin, and disodium edetate are mixed according to the above mass percentage; (3) The mixture obtained in step (2) is fully stirred and kneaded in a kneader, and then the kneaded plastic The mud material is molded with a honeycomb steel mold on an extruder with a pressure of 15Mpa to make a cylindrical or strip-shaped honeycomb body with a smooth surface and a complete honeycomb channel structure, and then dried at 130°C for 24 hours; (4) will get The dry honeycom...

Embodiment 3

[0021] A honeycomb microbial carrier, which is composed of the following raw materials in mass percentage: 40% of feedwater sludge, 35% of sawdust and waste paper mixed in any proportion, 20% of sodium carboxymethyl cellulose, mixed with calcium carbonate and hydroxyl Apatite 5%. The method for preparing the honeycomb-shaped microbial carrier includes the following steps: (1) drying and grinding feedwater sludge and carbon-containing substances, and the particle size is subject to 100% passing through a 100-mesh sieve; (2) drying the sludge, carbon-containing substances Substances, adhesives, and additives are mixed according to the above mass percentage; (3) The mixture obtained in step (2) is fully stirred and kneaded in a kneader, and then the kneaded plastic clay is used on the extruder with a honeycomb steel mould. Press molding to make a columnar or strip-shaped honeycomb body with smooth surface and complete honeycomb channel structure, and then dry at 120°C for 24 hour...

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Abstract

The invention relates to a microorganism immobilization carrier, particularly to a honeycomb-shaped microorganism carrier and a preparation method of the microorganism carrier, and is used for eliminating harm and pollution of sludge on environment, realizing resource utilization of the sludge and lowering the microorganism carrier cost. The preparation method comprises the following steps of: (1) drying the sludge and a carbon-containing material, and grinding; (2) mixing 30-60wt% of sludge, 20-40wt% of carbon-containing material, 2-20wt% of adhesive and 1-10wt% of additive; (3) stirring themixture, kneading to obtain a plastic sludge material, carrying out extrusion molding with a honeycomb steel mold and drying; (4) charring; and (5) activating. The microorganism carrier is low in cost, changes wastes into valuables, realizes resource utilization of the sludge, and is high in mechanical strength, long in service life and diversified in microorganism growth environment, thereby being an economical, efficient and durable novel immobilization carrier.

Description

technical field [0001] The invention relates to a microbial immobilization carrier, in particular to a honeycomb microbial carrier and a preparation method thereof. Background technique [0002] Immobilized microorganism technology is to locate free cells or microorganisms in a limited space area by chemical or physical means, so that they can keep active and can be used repeatedly. At present, the use of carriers to immobilize microorganisms in bioreactors and bioreactors for waste gas or wastewater treatment is beneficial to increase the concentration of microorganisms (especially microorganisms with special functions) in the bioreactor and help microorganisms to resist the influence of adverse environments. It is beneficial to the solid-liquid separation after the reaction, shortens the time required for treatment, and improves the efficiency of biological treatment of wastewater or waste gas. At present, the carriers commonly used for immobilizing microorganisms include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C01B31/08C01B31/10C02F3/34B01D53/85B01D53/56B01D53/02C01B32/324
CPCY02E50/343Y02A50/20Y02E50/30
Inventor 任晓莉赵金安王志强梁保红
Owner TAIYUAN INST OF TECH
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