Preparation method and use of compound immobilized biological carrier

A biological carrier and application technology, applied in the field of preparation of composite immobilized biological carriers, can solve problems such as difficult settlement, easy loss, and limited sewage treatment capacity, and achieve high treatment efficiency, convenient production, and increased removal effect

Active Publication Date: 2013-09-18
北京金科源环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the application of composite biological carriers in sewage biodegradation has been widely used and researched. Light organic carriers have a larger specific surface area, which is more advantageous in treatment efficiency, but it is difficult to settle, so it is easier to lose , which limits the treatment capacity of sewage; metal carrier particles with high density settle quickly, but the surface of this kind of material is smooth, and it is not easy to form a film

Method used

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  • Preparation method and use of compound immobilized biological carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 100g polyether, 50g toluene diisocyanate, 3.1g polyisocyanate, 4g attapulgite, 0.45g silicon dioxide, 0.25g tertiary amine, 0.14g alkyltin oxide, 2.0g water, 4.5g dichloromethane to the biochemical In the reaction kettle, stir evenly at room temperature, react, foam and form, and pulverize to obtain polyurethane foam particles with a particle size of 3 to 4 cm.

[0024] Stir and mix 1g of polyurethane foam particles and 9g of dry sponge iron particles with a particle size of 3 to 4cm, and then add them to the extruder. After melting, the sponge iron particles and polyurethane foam particles are fully mixed, extruded, and cut to form a Polyurethane foam particles with sponge iron particles; then fill the polyurethane foam particles containing sponge iron particles into the upper and lower hemispheres with a diameter of 100mm and a porosity of 99% made of polypropylene, and then fasten the two hemispheres superior.

[0025] Finally, put the closed sphere into activat...

Embodiment 2

[0027] Stir and mix 1g of polyurethane foam particles and 31g of dry sponge iron particles with a particle size of 3 to 4cm in Example 1, then add them to the extruder, melt the sponge iron particles and polyurethane foam particles to fully mix, and extrude , cut off to form the polyurethane foam particles containing the sponge iron particles; then the polyurethane foam particles containing the sponge iron particles are filled in the upper and lower hemispheres with a diameter of 100 mm and a porosity of 99% made of polypropylene, and then the The two hemispheres are snapped together.

[0028] Finally, put the closed sphere into activated sludge with a pH value of 8, and after 2 hours of domestication reaction, take out the sphere, wash and dry it to obtain a density of 1.8g / cm 3 Composite immobilized biological carrier materials.

Embodiment 3

[0030] Stir and mix 1g of polyurethane foam particles and 21g of dry sponge iron particles with a particle size of 3 to 4cm in Example 1, then add them to the extruder, melt the sponge iron particles and polyurethane foam particles, and extrude , cut off to form the polyurethane foam particles containing the sponge iron particles; then the polyurethane foam particles containing the sponge iron particles are filled in the upper and lower hemispheres with a diameter of 100 mm and a porosity of 99% made of polypropylene, and then the The two hemispheres are snapped together.

[0031] Finally, put the closed sphere into activated sludge with a pH value of 7.5. After 3.5 hours of domestication reaction, the sphere is taken out, washed and dried to obtain a density of 2.0 g / cm 3 Composite immobilized biological carrier.

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Abstract

The invention relates to the technical field of wastewater retreatment, and in particular relates to a preparation method and use of a compound immobilized biological carrier. The carrier is obtained by mixing a polyurethane foam particle and a sponge ion particle at the weight ratio of 1:(9-31), filling the mixture into a sphere, which is prepared from polypropylene, 100mm in diameter, and 99% in porosity, placing the sphere into activated sludge at the pH (Potential of Hydrogen) value of 7-8, carrying out acclimation for 2-4 hours, taking the sphere out, and cleaning and drying the sphere to obtain the compound immobilized biological carrier at the density of 1.5-2.0g/cm<3>. The carrier provided by the invention is convenient to prepare, simple to operate, low in running cost, high in treatment efficiency, and capable of saving investment and promoting economic efficiency.

Description

【Technical field】 [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a preparation method and application of a composite immobilized biological carrier. 【Background technique】 [0002] At present, due to the lack of economical and effective treatment processes at home and abroad, the treatment of refractory organic wastewater and high ammonia nitrogen and high phosphorus wastewater has always been a problem. Different treatment processes are required for different concentrations of wastewater. A single treatment method often has various deficiencies. Therefore, composite sewage treatment materials have become a research hotspot. [0003] Biological carrier is one of the cores of biofilm water treatment technology and an important place for microorganisms to survive and metabolize. At present, biological carriers are mainly made of polypropylene, polyethylene, or polyester, and mainly include dispersed, suspended, and immob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/00C08G18/76C08G18/48C08J9/14C08L75/08C08K3/34C08K3/08C02F101/30
CPCY02W10/10
Inventor 李杰王亚娥
Owner 北京金科源环保科技有限责任公司
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