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Membrane bioreaction technology-based sewage treatment method

A sewage treatment method and membrane biological reaction technology, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The membrane flux decline and other problems, to achieve the effect of improving oxygen utilization, small footprint, and reducing membrane pollution

Inactive Publication Date: 2010-11-24
YUNNAN KUNMING SHIPBUILDING DESIGN & RESEARCH INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In practical application, because the MBR membrane module is easily polluted during operation, the flux of the membrane decreases, which affects the stable operation of the membrane module. Membrane fouling has become a key problem restricting the application of MBR.

Method used

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  • Membrane bioreaction technology-based sewage treatment method
  • Membrane bioreaction technology-based sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Refer to attached figure 1 , the tobacco sewage with a suspended solids concentration of 350 mg / L is collected and enters the grid pool 3, and after the solid impurities in the water are removed by the grid 31, it enters the regulating pool 4, and the water quality and quantity are homogenized in the regulating pool, and the sewage enters the air flotation pool 5, while adding 0.05% flocculant by sewage weight; the pressure air of 0.4MPa and the water of the same pressure enter the pressure container 61 from different angles, causing them to collide, rotate at high speed and shear, with great momentum Rapid and strong mixing, the gas content in water is higher than 12%, enters the micro-nano bubble generator 6, and places one or several micro-nano bubble generators at the bottom of the air flotation tank as required; the mixed gas and water are generated by micro-nano bubbles The device is ejected at a very high speed, producing a very large number of micro-nano bubbles...

Embodiment 2

[0029] Refer to attached figure 1 , the tobacco sewage with a suspended matter concentration of 1500mg / L is collected and enters the grid pool 3, and after the solid impurities in the water are removed by the grid 31, it enters the regulating pool 4, and the water quality and quantity are homogenized in the regulating pool, and the sewage enters the air flotation pool 5, add flocculant of 0.1% of sewage weight at the same time; put 0.5MPa pressure air and water of the same pressure into the pressure container 61 from different angles, make them collide, rotate at high speed and shear, with great momentum Rapid and strong mixing, the gas content in water is higher than 12%, enters the micro-nano bubble generator 6, and places one or several micro-nano bubble generators at the bottom of the air flotation tank as required; the mixed gas and water are generated by micro-nano bubbles The device is ejected at a very high speed, producing a very large number of micro-nano bubbles tha...

Embodiment 3

[0031] Refer to attached figure 1, the tobacco sewage with a suspended matter concentration of 2500mg / L is collected and enters the grid pool 3, and after the solid impurities in the water are removed by the grid 31, it enters the regulating pool 4, and the water quality and quantity are homogenized in the regulating pool, and the sewage enters the air flotation pool 5, add 0.15% flocculant by sewage weight at the same time; put the pressure air of 0.7MPa and the water of the same pressure into the pressure container 61 from different angles, make them collide, rotate at high speed and shear, with great momentum Rapid and strong mixing, the gas content in water is higher than 12%, enters the micro-nano bubble generator 6, and places one or several micro-nano bubble generators at the bottom of the air flotation tank as required; the mixed gas and water are generated by micro-nano bubbles The device is ejected at a very high speed, producing a very large number of micro-nano bub...

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Abstract

The invention relates to a membrane bioreaction technology-based sewage treatment method, in particular to a membrane technology-based tobacco sewage treatment method. The method comprises the following steps of a, filtering; b, regulating; c, adding a flocculating agent; d, performing micro nano air flotation; e, performing biochemical treatment; f, disinfecting; and g, detecting, discharging or reusing. The membrane technology-based tobacco sewage treatment method has the advantages of simpleness, convenient equipment installation, economy, practicality and small occupied area.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a tobacco sewage treatment method based on membrane technology. Background technique [0002] Traditional tobacco sewage treatment methods include: physical and chemical methods, oxidation methods, biochemical methods, etc. Although the above-mentioned various methods have good treatment effects, there are also some problems. In terms of physical and chemical methods, although activated carbon has the characteristics of good adsorption effect, the regeneration of activated carbon is difficult and the cost is high, which limits its application; although oxidation The method has a certain effect in removing the chroma of tobacco sewage, but often the removal of COD is not ideal, and the cost of treatment chemicals is relatively high. Many new oxidation methods are still in the stage of experimental research and have not been industrialized. Biochemical treatment of tobacco sewage has t...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 李涛唐向阳高国涛杨斌房镇孙旭海
Owner YUNNAN KUNMING SHIPBUILDING DESIGN & RESEARCH INSTITUTE