River aeration membrane module, aeration membrane system and method

An aeration film and river channel technology, applied in water aeration, chemical instruments and methods, sustainable biological treatment, etc., can solve the problem of low DO content in black and odorous water, promote film formation, facilitate rapid degradation, and improve transmission quality effect

Pending Publication Date: 2019-06-25
安徽创杰环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problem of low DO content in black and odorous water bodies in existing river courses, the present invention provides a river channel aeration membrane module, aeration membrane system and method, which can realize efficient and targeted oxygen supply for heavily polluted water bodies, adjust DO content in water bodies, and aeration membrane While improving the mass transfer effect, it can also construct the microbial community structure and micro-habitat in the river channel, and improve the self-purification ability of the river channel; and further realize online monitoring and intelligent control through the intelligent control system, save energy consumption, and ensure the long-term improvement of water quality.

Method used

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  • River aeration membrane module, aeration membrane system and method
  • River aeration membrane module, aeration membrane system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Take a project that requires oxygen enhancement and aeration as an example: select a black and odorous section of a river as the project site, the river is 2,500 meters long, and the average width is 27 meters. The COD in the water body of the river cr The concentration is 25-31mg / L; the concentration of ammonia nitrogen is 16-25mg / L; along the river, five places from 1 to 5 are selected as sampling points to detect its transparency, ORP, DO, COD concentration, and ammonia nitrogen concentration. The water temperature is 25°C) and the aeration membrane system is arranged.

[0061] Two rows of hollow braided biofilms are distributed on each membrane module; the hollow membrane tube is made of reinforced lining PVDF material, connected to the aeration pipeline through methyl methacrylate; the inner diameter of the hollow membrane tube is 0.4mm, and the outer diameter is 1.45mm The diameter of the pores is 0.01-0.1μm; the fineness of the microporous chemical fiber membrane...

Embodiment 2

[0079] Select a black and odorous section of a river as the project site. The river is 1,200 meters long and 15 meters wide on average. The concentration of ammonia nitrogen in the water body of the river is 18.5 mg / L; a place along the river is selected as a sampling point to detect its transparency, ORP, DO, For ammonia nitrogen concentration, an aeration membrane system is arranged at a water depth of 2m (water temperature is 25°C).

[0080] Two rows of hollow braided biofilms are distributed on each membrane module; the hollow membrane tube is made of reinforced lining PVDF material, connected to the aeration pipeline through methyl methacrylate; the inner diameter of the hollow membrane tube is 0.4mm, and the outer diameter is 1.45mm The diameter of the pores is 0.01-0.1μm; the fineness of the microporous chemical fiber membrane is 0.01-0.1D, and the length is 5-10mm; the microporous chemical fiber membrane is connected with the hollow membrane tube through epoxy glue; Th...

Embodiment 3

[0086] Select a black and odorous section of a river as the project site. The length of the river is 1160 meters and the width is 13-18 meters. The concentration of ammonia nitrogen in the water body of the river is 20.5mg / L. , Ammonia nitrogen concentration, arrange the aeration membrane system at the water depth of 1m (water temperature is 25°C).

[0087] Two rows of hollow braided biofilms are distributed on each membrane module; the hollow membrane tube is made of reinforced lining PVDF material, connected to the aeration pipeline through methyl methacrylate; the inner diameter of the hollow membrane tube is 0.4mm, and the outer diameter is 1.45mm The diameter of the pores is 0.01-0.1μm; the fineness of the microporous chemical fiber membrane is 0.01-0.1D, and the length is 5-10mm; the microporous chemical fiber membrane is connected with the hollow membrane tube through epoxy glue; The surface area is 7000~7500m 2 / m 3 , the porosity is 40%-50%, and the film-forming wei...

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Abstract

The invention discloses a river aeration membrane module, an aeration membrane system and a method, and belongs to the field of sewage treatment. The river aeration membrane module comprises an aeration pipeline and a hollow braided biomembrane, the hollow braided biomembrane comprises hollow membrane tubes and micro-porous chemical fiber membrane wires, and the aeration pipeline is communicated with one ends of the hollow membrane tubes; and the other ends of the hollow membrane tubes are closed, the tube wall every tube is provided with a plurality of pores, and the micro-porous chemical fiber membrane wires are connected around the pores. The hollow membrane tubes with pores are adopted as the aeration module, and are combined with the micro-porous chemical fiber membrane wires arrangedaround the pores, so the oxygen absorption capacity is increased, the dissolved oxygen content of water is increased, and the biomembrane can be updated fast and has a short sludge age, thereby the membrane module has high bioactivity, effectively promote biomembrane formation to achieve a short biomembrane formation time, and effectively improves the sewage treatment effect.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and more specifically relates to a river channel aeration membrane module, an aeration membrane system and a method. Background technique [0002] Organic pollution is the main pollutant in urban sewage. At present, developed countries in the world generally adopt secondary biological treatment processes, such as activated sludge method, to eliminate such pollution. Among them, aeration is an important part of aerobic biological treatment. Its function is to ensure the dissolved oxygen (DO) required for microbial biochemistry, ensure that the microorganisms, substrates, and DO in the reactor are fully mixed, and provide favorable conditions for microbial degradation of organic matter. biochemical reaction conditions. How to increase DO in water in cities with limited land to improve microbial treatment capacity on the premise of saving costs will become a severe problem faced by sewage treatment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F7/00
CPCY02W10/10
Inventor 王文祥
Owner 安徽创杰环境科技有限公司
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