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Semi-coke microbial carrier and preparation method thereof

A microbial carrier, blue carbon technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Poor, complex processing technology and other problems, to achieve the effect of high content of volatile components, convenient material acquisition, high chemical activity

Active Publication Date: 2013-08-21
武汉武钢绿色城市技术发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, inorganic and organic microbial carriers / fillers are widely used in the domestic market. These biological carriers have many disadvantages, such as high material cost, complicated processing technology, and some environmental problems such as secondary pollution.
For example, the inorganic ceramic materials used generally have the disadvantages of high density, low porosity, small specific surface area, and large fluidization power consumption in the reactor; most of the polymer organic carriers come from petrochemical derivatives, such as polypropylene, Polyethylene, etc. have poor hydrophilicity, poor microbial film formation and microbial biomass, and some materials are photolyzed in the environment, and even have certain toxicity to environmental organisms

Method used

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  • Semi-coke microbial carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Weigh 50g of semi-coke with a particle size of 200 mesh, add the semi-coke to a nitric acid solution with a mass concentration of 10% at 80°C, and process for 4 hours;

[0034] 2) Immerse the treated blue carbon in a sodium hydroxide solution with a mass concentration of 31.7% at room temperature for 1 hour, wash until neutral, then wash it with tap water for 1 to 3 times, and dry it at 100°C for 2 hours to make a blue carbon matrix ;

[0035] 3) Dissolve 3g of polyvinyl alcohol (polymerization degree greater than 1750) in 97mL of boiling water at 100°C and stir for 8 hours to obtain a 3% polyvinyl alcohol solution;

[0036] 4) Measure 3.2mL of glyoxal solution with a mass concentration of 2.5%;

[0037] 5) Cross-link the polyvinyl alcohol solution and the cross-linking agent solution for 20 hours;

[0038] 6) Add the blue carbon matrix in step 2) into the crosslinked polyvinyl alcohol solution and stir for 3 hours, so that the polyvinyl alcohol gel can be evenly c...

Embodiment 2

[0043] 1) Weigh 10g of semi-coke with a particle size of 300 mesh, add the semi-coke to a nitric acid solution with a mass concentration of 50% at 100°C, and process for 2 hours;

[0044] 2) Immerse the treated blue charcoal in a sodium hydroxide solution with a mass concentration of 20% at room temperature for 0.5h, wash until neutral, wash with tap water for 1~3 times, and dry at 80°C for 1h to make blue charcoal matrix;

[0045] 3) Dissolve 6g of polyvinyl alcohol (polymerization degree greater than 1750) in 94mL of boiling water at 100°C and stir for 8 hours to obtain a 6% polyvinyl alcohol solution;

[0046] 4) Measure 2mL of glyoxal solution with a mass concentration of 0.5%;

[0047] 5) Cross-link the polyvinyl alcohol solution and the cross-linking agent solution for 10 hours;

[0048] 6) Add the medium blue carbon matrix in step 2) into the crosslinked polyvinyl alcohol solution and stir for 2 hours, so that the polyvinyl alcohol gel can be evenly coated on the blue...

Embodiment 3

[0053] 1) Weigh 20g of semi-coke with a particle size of 15 mesh, add the semi-coke to a nitric acid solution with a mass concentration of 20% at 100°C, and process for 5 hours;

[0054] 2) Immerse the treated blue carbon in a calcium hydroxide solution with a mass concentration of 6.4% at room temperature for 2 hours, wash until neutral, wash with tap water for 1 to 3 times, and dry at 90°C for 1 hour to make a blue carbon matrix ;

[0055] 3) Dissolve 8g of polyvinyl alcohol (polymerization degree greater than 1750) in 92mL of 100°C boiling water and reflux for 8 hours to obtain 8% polyvinyl alcohol solution;

[0056] 4) Measure 2mL of glutaraldehyde solution with a mass concentration of 1.5%;

[0057] 5) Cross-link the polyvinyl alcohol solution and the cross-linking agent solution for 24 hours;

[0058] 6) Add the blue carbon matrix in step 2) into the crosslinked polyvinyl alcohol solution and stir for 5 hours, so that the polyvinyl alcohol gel can be evenly coated on t...

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Abstract

The invention discloses a semi-coke microbial carrier and a preparation method thereof. The carrier is prepared from semi-coke, polyvinyl alcohol and a cross-linking agent according to the weight part ratio of 100-500:30-100:0.1-0.8. The method comprises the following steps: weighing the semi-coke according to a weight part ratio, adding the semi-coke into a strong acid solution and a strong base solution, and treating and drying to obtain a semi-coke substrate; weighing the polyvinyl alcohol solution and cross-linking agent solution with relative weight according to the weight part ratio, and cross-linking; and adding the semi-coke substrate into the cross-linked polyvinyl alcohol solution, stirring for 2-5 hours, demolding, drying, cooling, pelleting or cutting and forming to obtain the carbon microbial film carrier. By utilizing the large specific surface area (more than 300m<2> / g) and excellent adsorption performance of the modified semi-coke, the adsorption capacity and film culturing amount of the carrier on the microbes and pollutants can be improved, the carrier is further suitable for treatment of high-concentration organic wastewater, and the carrier has high impact load resistance.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a blue charcoal microbial carrier and a preparation method thereof. technical background [0002] Since the successful operation of the biofilter, the biofilm method has been rapidly developed and applied in recent years due to its advantages of strong degradation ability, short contact time, small footprint and low investment cost. The activated sludge method is still the most commonly used method for domestic water treatment due to its mature technology for wastewater treatment and low operation and maintenance costs. However, the activated sludge method occupies a large area, has a lot of excess sludge, poor denitrification effect, and is prone to sludge bulking and sludge loss. People have improved the performance of biochemical treatment by using biofilm method. In the biofilm method, the microbial carrier material determines the wastewater treatment effect a...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 张垒王丽娜刘尚超刘璞付本全段爱民张楠薛改凤刘霞王凯军
Owner 武汉武钢绿色城市技术发展有限公司
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