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Preparation method of facultative anaerobic bacteria filler for in-situ purification of domestic sewage

A technology for facultative anaerobic bacteria and domestic sewage, which is applied in the field of facultative anaerobic bacteria filler preparation, can solve the problems of microbial efficiency restriction, restriction of rural sewage treatment and disposal, high cost, and achieve rich functional groups, high porosity, high cost and high cost. Efficient processing effect

Inactive Publication Date: 2020-08-07
NANKAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for rural areas with scattered households and complex terrain, the cost of infrastructure construction (pipe network construction) in the early stage of centralized treatment is extremely high, which seriously restricts rural sewage treatment and disposal
At the same time, the efficiency of microbes for miniaturized and distributed treatment has become one of the main problems restricting rural sewage treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a facultative anaerobic filler for in-situ purification of domestic sewage. The facultative anaerobic microbial filler is formed by naturally growing, loading, and cultivating on the filler. The steps are as follows:

[0020] 1) Introduce domestic sewage into a facultative anaerobic tank equipped with a micro-aeration device to maintain dissolved oxygen at 0.1mg / l;

[0021] 2) Put the porous chitosan@lignin filler rich in hydroxyl and amino groups in the above-mentioned facultative anaerobic tank, immerse in domestic sewage, and maintain the water temperature at 15°C;

[0022] 3) According to 1% of the capacity of the facultative anaerobic tank as the water circulation flow rate (ml / min), the domestic sewage in the facultative anaerobic tank is recycled;

[0023] 4) The above-mentioned system is continuously operated, and the facultative anaerobic bacteria that can treat domestic sewage on the filler gradually increase after 4 days;

[0024] 5) C...

Embodiment 2

[0029] A method for preparing a facultative anaerobic filler for in-situ purification of domestic sewage. The facultative anaerobic microbial filler is formed by naturally growing, loading, and cultivating on the filler. The steps are as follows:

[0030] 1) Introduce domestic sewage into a facultative anaerobic tank equipped with a micro-aeration device to maintain dissolved oxygen at 0.3mg / l;

[0031] 2) Put the porous chitosan@lignin filler rich in hydroxyl and amino groups in the above-mentioned facultative anaerobic tank, immerse in domestic sewage, and maintain the water temperature at 20°C;

[0032] 3) 1.5% of the capacity of the facultative anaerobic tank is the water circulation flow rate (ml / min), and the domestic sewage in the facultative anaerobic tank is recycled;

[0033] 4) continuous operation of the above-mentioned system, the facultative anaerobic bacteria that can treat domestic sewage on the filler gradually increase through 5 days;

[0034] 5) After 10 da...

Embodiment 3

[0039] A method for preparing a facultative anaerobic filler for in-situ purification of domestic sewage. The facultative anaerobic microbial filler is formed by naturally growing, loading, and cultivating on the filler. The steps are as follows:

[0040] 1) Introduce domestic sewage into a facultative anaerobic tank equipped with a micro-aeration device to maintain dissolved oxygen at 0.4mg / l;

[0041] 2) Put the porous chitosan@lignin filler rich in hydroxyl and amino groups in the above-mentioned facultative anaerobic tank, immerse in domestic sewage, and maintain the water temperature at 25°C;

[0042] 3) 2% of the capacity of the facultative anaerobic tank is the water circulation flow rate (ml / min), and the domestic sewage in the facultative anaerobic tank is recycled;

[0043] 4) continuous operation of the above-mentioned system, the facultative anaerobic bacteria that can treat domestic sewage on the filler gradually increase through 5 days;

[0044] 5) After 11 days...

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Abstract

The invention discloses a preparation method of facultative anaerobic bacteria filler for in-situ purification of domestic sewage. By utilizing the method, facultative anaerobic microorganism bacteriacapable of treating domestic sewage can be constructed, the bacteria are loaded on a carrier which is large in surface area, porous and rough in surface, efficient loading of microorganism strains isachieved, and the facultative anaerobic microorganism filler capable of treating domestic sewage is obtained through a freeze drying technology. The invention has the advantages that the facultativeanaerobic microorganisms for treating the domestic sewage can be rapidly immobilized on the carrier by utilizing the technology, and the effective viable count is higher than 1010cfu / g. The facultative anaerobic bacteria filler constructed by the method has the characteristics of high porosity, large specific surface area, rich functional groups (hydroxyl and amino), high effective viable count and the like. By utilizing the filler constructed by the invention, the facultative anaerobic treatment efficiency can be remarkably improved, and pollutant removal is accelerated.

Description

technical field [0001] The invention relates to domestic sewage treatment technology, in particular to a method for preparing facultative anaerobic bacteria filler used for in-situ purification of domestic sewage. Background technique [0002] With the development of the times and the improvement of people's living standards, the pace of urban construction is accelerating, the people's growing consumption demand and the desire for a beautiful city are getting stronger and stronger, and the construction of rural sewage infrastructure is relatively backward, resulting in the discharge of rural sewage into rivers , the surface, etc., seriously pollute the environment while breeding mosquitoes and flies, producing foul-smelling gases, threatening human health. Rural sewage treatment is an important part of my country's sewage treatment industry. Compared with cities and towns, only the sewage generated in the production and living process is treated. Rural sewage treatment is al...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/2806
Inventor 林应超李维尊季鹏杨飞于明言孙青梅
Owner NANKAI UNIV
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