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Method for in-situ purification of domestic sewage by circular fluidization technology

A technology of circulating fluidization of domestic sewage, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost and restrictions on rural sewage treatment and disposal, and achieve improved removal Efficiency, the effect of improving utilization efficiency

Inactive Publication Date: 2020-07-03
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for in-situ purification of domestic sewage by circulating fluidization technology, by constructing centimeter-scale porous carrier microspheres and loading microorganisms, relying on the purification process method of circulating fluidization technology, the steps are as follows:

[0025] 1) Disperse biochar and the same amount of chitosan (total mass 10g) in 200ml 2% (V / V) acetic acid solution;

[0026] 2) After vigorously stirring the above solution at 65°C for 2 hours, slowly add 0.6 g of polyacrylamide powder, and continue stirring for 1 hour to form a viscous liquid;

[0027] 3) Transfer the above liquid to the needle tube while it is hot, and push the needle tube to form a droplet with a diameter of 1.2cm, and place it in ultrapure water to form a spherical shape;

[0028] 4) Place the above sphere in an oven at 180°C for 6 hours to remove moisture;

[0029] 5) Take it out after cooling, and put it in the effective viable count 10 9 CFU / ml in microbial...

Embodiment 2

[0040] A method for in-situ purification of domestic sewage by circulating fluidization technology, by constructing centimeter-scale porous carrier microspheres and loading microorganisms, relying on the purification process method of circulating fluidization technology, the steps are as follows:

[0041] 1) Disperse biochar and the same amount of chitosan (total mass 15g) in 200ml 2% (V / V) acetic acid solution;

[0042] 2) After vigorously stirring the above solution at 80°C for 2 hours, slowly add 1g of polyacrylamide powder, and continue stirring for 1 hour to form a viscous liquid;

[0043] 3) Transfer the above liquid to the needle tube while it is hot, and push the needle tube to form a 2cm drop, and place it in ultrapure water to form a spherical shape;

[0044] 4) Place the above sphere in an oven at 220°C for 6 hours to remove moisture;

[0045] 5) Take it out after cooling, and put it in the effective viable count 10 9 CFU / ml in microbial (single bacteria) fermenta...

Embodiment 3

[0056] A method for in-situ purification of domestic sewage by circulating fluidization technology, by constructing centimeter-scale porous carrier microspheres and loading microorganisms, relying on the purification process method of circulating fluidization technology, the steps are as follows:

[0057]1) Disperse biochar and the same amount of chitosan (total mass 20g) in 200ml 2% (V / V) acetic acid solution;

[0058] 2) After vigorously stirring the above solution at 100°C for 2 hours, slowly add 1 g of polyacrylamide powder, and continue stirring for 1 hour to form a viscous liquid;

[0059] 3) Transfer the above liquid to the needle tube while it is hot, and push the needle tube to form a 2cm drop, and place it in ultrapure water to form a spherical shape;

[0060] 4) Place the above sphere in an oven at 220°C for 8 hours to remove moisture;

[0061] 5) Take it out after cooling, and put it in the effective viable count 10 9 CFU / ml in microbial (single bacteria) ferment...

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Abstract

The invention relates to a method for in-situ purification of domestic sewage by a circular fluidization technology. The method is a purification process relying on the circular fluidization technology by constructing centimeter-level porous carrier microspheres and loading microorganisms. A biological carrier suitable for a fluidization treatment is constructed, microorganisms are loaded on the carrier, immobilization of the microorganisms can be achieved, and the utilization efficiency is improved. Meanwhile, as the carrier has a porous structure, substances difficult to treat can be adsorbed on the carrier in the fluidization process, and the purpose of deeply removing pollutants is achieved. In the domestic sewage treatment process, microorganisms can be used for purifying a water body, the carrier loaded with microorganisms can also filter pollutants, the pollutant removal efficiency is improved, and finally up-to-standard sewage discharge is achieved.

Description

technical field [0001] The invention relates to domestic sewage treatment technology, in particular to a method for in-situ purification of domestic sewage by circulating fluidization technology. Background technique [0002] With the development of the times and the improvement of people's living standards, the pace of urban construction has accelerated, and the people's growing consumer demand and desire for beautiful cities have become stronger and stronger. However, compared with the rapid development of cities, rural infrastructure construction is relatively backward. In particular, the construction of rural sewage pipe network is difficult and expensive, resulting in random discharge of rural sewage, difficult management, serious environmental pollution and breeding of mosquitoes and flies, producing foul-smelling gas, threatening human health. Rural sewage treatment is an important part of my country's sewage treatment industry. Compared with cities and towns, only th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/08C02F3/10C02F3/30
CPCC02F3/348C02F3/085C02F3/105C02F3/302Y02W10/10
Inventor 林应超李维尊季鹏杨飞于明言孙青梅
Owner NANKAI UNIV