Water purifying agent of self-forming block carbon carrier immobilized microorganisms and preparation method thereof

A self-forming, carbon-carrier technology, applied in the direction of granular microbial carrier treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problem of not fully exerting the carbon-based carrier's ability to adsorb pollutants and hindering the full contact of pollutants , less functional groups on the surface, etc., to overcome the problem of hydrophobicity, good contact, and improve the adsorption efficiency

Active Publication Date: 2017-12-15
INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coal-based activated carbon used and commercially available carbon materials (activated carbon AC, carbon nanotube CNT, graphite GC, etc.) have many advantages, such as high porosity, large specific surface, good stability, non-toxic, non-polluting-environmentally friendly, etc.; However, its surface has fewer functional groups and does not contain hydrophilic groups (-COOH, -OH), so its dispersion in water is poor, which hinders full contact with pollutants in sewage, and it is compatible with hydrogen bonds and lone electrons. It is difficult for nitrogen and phosphorus substances to interact electrostatically and cannot fully exert the adsorption effect of carbon-based carriers on pollutants. Therefore, it is very necessary to control the surface affinity / hydrophobicity of carbon materials.
The current common method is to use concentrated acid (concentrated HNO 3 , Concentrated H 2 SO 4 ) to activate the inert carbon surface and oxidize the surface carbon to form oxygen-containing functional groups (-COOH, -OH, -C=O), and at the same time produce polluting nitrogen oxides and sulfur oxides, and the reaction conditions are harsh and the reaction vessel requirements Concentrated acid resistance, there are many deficiencies in the actual operation and application process

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  • Water purifying agent of self-forming block carbon carrier immobilized microorganisms and preparation method thereof
  • Water purifying agent of self-forming block carbon carrier immobilized microorganisms and preparation method thereof
  • Water purifying agent of self-forming block carbon carrier immobilized microorganisms and preparation method thereof

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preparation example Construction

[0027] A method for preparing a water purifying agent for immobilizing microorganisms on a self-forming block carbon carrier, the specific steps are:

[0028] 1. Preparation of carbon-based carrier with hydrophilic functional groups on the surface

[0029] 1) Hydrothermal method to synthesize powdered carbon materials: add 20 grams of C 6 H 6 O 6 (Glucose) and 6 grams of CO(NH) 2 (Urea), dissolved in 50-80 ml water, placed in a 200 ml reaction kettle, the reaction temperature is 180°C, and the reaction time is 24-48 hours to generate a massive granular carbon precursor;

[0030] 2) Wash the above-mentioned block granular carbon precursor with absolute ethanol to remove water-insoluble organic impurities, and then centrifuge to obtain the lower sediment; take the lower sediment and wash with water to remove water-soluble impurities, and the pH is about 7, finally Dry at 80°C overnight to obtain a block granular carbon precursor A;

[0031] 3) Place the bulk granular carbon precursor A ...

Embodiment 1

[0035] A method for preparing a water purifying agent for immobilizing microorganisms on a self-forming block carbon carrier, the specific steps are:

[0036] 1. Preparation of carbon-based carrier with hydrophilic functional groups on the surface

[0037] 1) Hydrothermal method to synthesize powdered carbon materials: add 20 grams of C 6 H 6 O 6 (Glucose) and 6 grams of CO(NH) 2 (Urea), dissolved in 60ml water, placed in a 200ml reactor, the reaction temperature is 180℃, and the reaction time is 32 hours to generate a massive carbon precursor;

[0038] 2) Wash the above-mentioned massive carbon precursor with absolute ethanol to remove water-insoluble organic impurities, and then centrifuge to obtain the lower sediment; take the lower sediment and wash with water to remove the water-soluble impurities, and the pH is about 7, finally Dry overnight at 80°C to obtain a massive carbon precursor A;

[0039] 3) Place the bulk carbon precursor A sample in a muffle furnace at 300°C for 2h t...

Embodiment 2

[0043] A method for preparing a water purifying agent for immobilizing microorganisms on a self-forming block carbon carrier, the specific steps are:

[0044] 1. Preparation of carbon-based carrier with hydrophilic functional groups on the surface

[0045] 1) Hydrothermal method to synthesize powdered carbon materials: add 20 grams of C 6 H 6 O 6 (Glucose) and 6 grams of CO(NH) 2 (Urea), dissolved in 50 ml water, placed in a 200 ml reactor, the reaction temperature is 180°C, and the reaction time is 24 hours to generate a massive carbon precursor;

[0046] 2) Wash the above-mentioned massive carbon precursor with absolute ethanol to remove water-insoluble organic impurities, and then centrifuge to obtain the lower sediment; take the lower sediment and wash with water to remove the water-soluble impurities, and the pH is about 7, finally Dry overnight at 80°C to obtain a massive carbon precursor A;

[0047] 3) Place the bulk carbon precursor A sample in a muffle furnace at 300°C for 2h...

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Abstract

The invention belongs to the technical field of biological activated carbon and biological water purifying agents, and particularly relates to a water purifying agent of self-forming block carbon carrier immobilized microorganisms and a preparation method thereof. Self-forming block porous carbon is placed in a culture medium, compound bacterial strains are inoculated into the culture medium at the same time, and after oscillating co-culture and drying, the microbial water purifying agent is prepared; because porous blocks are formed in the synthesis process of carbon carriers, the compression molding process of the carbon carriers is not involved in the preparation of the microbial water purifying agent, the procedures are simplified, and the cost is saved; meanwhile, the self-forming block carbon has hydrophilicity, and the effect of adsorbing and fixing the microorganisms is improved in the co-culturing process of the carbon and the microorganisms; the water purifying agent has the advantages of achieving a double purification functions of adsorption and degradation and being stable in effect, easy to precipitate and treat and the like, and is very suitable for the large-scale treatment of anaerobic wastewater for culture.

Description

Technical field [0001] The invention belongs to the technical field of biological activated carbon and biological water purifying agent, and specifically relates to a water purifying agent for immobilizing microorganisms on a self-forming block carbon carrier and a preparation method thereof. technical background [0002] In the large-scale development of animal husbandry, unified management has reduced costs and improved economic benefits. However, serious environmental pollution caused by a large number of concentrated sewage discharges is in urgent need of treatment. The domestic and foreign treatment methods for aquaculture sewage mainly include resource utilization and standard discharge, which can be summarized into three modes: return to farm mode, natural treatment mode and industrialized treatment, each of which has advantages and disadvantages. The purpose of aquaculture wastewater treatment in my country is to control and reduce the harm caused by it, carry out compreh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/38C02F103/20
CPCC02F3/34C02F2003/003C02F2101/38C02F2103/20C02F2305/06
Inventor 陈彪李洁黄婧肖艳春张燕青陈阳
Owner INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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