High-pass flexible bionic dynamic membrane assembly and its production method and uses

A dynamic membrane and membrane module technology, applied in the fields of environment, biology and chemical industry, can solve problems such as membrane fouling, and achieve the effect of wide source, low cost and increase of fixed investment.

Inactive Publication Date: 2006-07-26
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some progress has been made in the research of dynamic membranes, the dynamic membrane modules produced are in a fixed state in the biochemical reactor, and the cross-flow shear force on the membrane surface is provided only by aeration, and the problem of membrane fouling has not been solved.

Method used

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  • High-pass flexible bionic dynamic membrane assembly and its production method and uses
  • High-pass flexible bionic dynamic membrane assembly and its production method and uses
  • High-pass flexible bionic dynamic membrane assembly and its production method and uses

Examples

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Effect test

Embodiment 1

[0027] Example 1: Choose 200-mesh and 300-mesh nylon screen as the base material to make a 1000×500mm membrane module, soak it in the collagen solution, add 0.5% chromium-aldehyde modifier, the reaction temperature is 30°C, and the reaction time is 2 hours, the water collecting pipe is 20mm PVC pipe. The membrane module of the present invention is used for the treatment of domestic sewage. The operating parameters of the biochemical reactor are as follows: influent COD 150-380mg / L, hydraulic retention time (HRT) 6h, activated sludge concentration 6.0-8.0g / L, powdered activated carbon dosing The dosage is 0.1%, the gas-water ratio is 20-30:1, the dissolved oxygen concentration (DO) is 2.0-4.0mg / L, the reaction temperature is 22-30°C, and the daily processing capacity is 5 tons. Control membrane flux 30L / m 2 ·h, continuous water outlet, the membrane pressure remains stable at -0.02MPa. The water quality of the effluent passing through the membrane module is as follows: COD<20m...

Embodiment 2

[0028] Embodiment 2: select 100 mesh screen mesh and 200 mesh nylon mesh as base materials, make 800 * 400mm membrane module, soak in collagen solution, add 1.5% chromium-aldehyde modifier, reaction temperature 40 ℃, reaction time 4 hours, the water collecting pipe is 20mm PVC pipe. The membrane module of the present invention is used for the treatment of printing and dyeing wastewater. The operating parameters of the biochemical reactor are as follows: the influent is hydrolyzed acidified wastewater, COD900-1500mg / L, chromaticity about 50 times, hydraulic retention time (HRT) 15h, activated sludge concentration 6.5~8.0g / L, the dosage of powdered activated carbon is 0.6%, and the daily processing capacity is 2.5 tons. Control membrane flux 20L / m 2 h, the membrane pressure is kept stable at -0.02MPa. The water quality of the effluent passing through the membrane module is as follows: COD<100mg / L, SS is zero, and the chromaticity is 3 times. The membrane module of the present...

Embodiment 3

[0029] Example 3: Select 80-mesh nylon mesh and filter cloth as the base material to make a membrane module with a size of 1100 × 600mm, soak it in the collagen solution, add 3.0% chromium-aldehyde modifier, the reaction temperature is 35 ° C, and the reaction time is 6 hours , The water collecting pipe is a 20mm rubber hose. The membrane module of the present invention is used for the treatment of terephthalic acid (PTA) wastewater, and the operating parameters of the biochemical reactor are as follows: terephthalic acid (PTA) production wastewater mainly contains terephthalic acid, acetic acid, methyl acetate, etc. Water COD4000±1000mg / L, TA1400±100mg / L, hydraulic retention time (HRT) 30h, TA degrading strain concentration 2.0-4.0g / L, powdered activated carbon dosage 1.0%, daily treatment capacity 1.6 tons. Control membrane flux 18L / m 2 ·h, continuous water discharge, the membrane pressure is kept stable at -0.02~-0.03MPa. The water quality of the effluent passing through ...

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Abstract

The disclosed high-flux flexible bionic dynamic membrane module for solid-liquid separation comprises: a membrane module with a piece of cord fabric constituted by some porous material nets or filter cloth, a flow-guide cavity, and two catch-water pipes; a valve, a loose joint, and a membrane frame welded a stationary block to fix the catch-water pipes. Wherein, modifying the module surface with collagen; arranging a cavity with long and wide size, sticking or sewing two sides of long direction, opening two sides of wide direction; arranging the flexible flow-guide grid to form the former flow-guide cavity; inserting two opening ends of the cord fabric into the grooves of two catch-water pipes with one end be sealed and another end connected to the total outlet pipe by the valve and loose joint.

Description

technical field [0001] The present invention relates to a high-throughput flexible bionic dynamic membrane module and its manufacturing method, and its application relates to a high-flux flexible bionic dynamic membrane module for solid-liquid separation, a manufacturing method thereof, and a high-flux flexible bionic dynamic membrane module The application in sewage treatment biochemical devices belongs to the fields of environment, biology and chemical industry. Background technique [0002] The biochemical system of wastewater treatment is divided into suspension growth and fixed growth from the growth mode of microorganisms. For the biochemical system of suspension growth mode, solid-liquid separation is often involved. The traditional method is to use the gravity settlement of the secondary sedimentation tank. Membrane bioreactor (MBR) is currently a hot spot in the research of biochemical systems. It is gradually applied in engineering because of its good microbial fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02
CPCY02W10/10
Inventor 沈树宝陈英文祝社民
Owner NANJING UNIV OF TECH
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