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Pressurizing and aerating MBR (Membrane Bioreactor) water treatment equipment and method

A water treatment device and aeration technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of lack of sewage flow devices and methods, and achieve the generation of excess sludge The effect of low volume, large volume load and high sludge concentration

Active Publication Date: 2014-04-16
GUANGZHOU EP ENVIROMENTAL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a lack of reasonable devices and methods for solving the relationship between sewage flow, aeration flow and microorganisms in the pressurized aeration process

Method used

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  • Pressurizing and aerating MBR (Membrane Bioreactor) water treatment equipment and method

Examples

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Effect test

Embodiment 1

[0036] Treatment object: erythromycin pharmaceutical wastewater anaerobic treatment effluent: light yellow, COD concentration 3000-3500 mg / L, ammonia nitrogen concentration 100-150 mg / L, pH value 6-8.

[0037] After the sludge is acclimated, the sludge concentration in the device reaches 8-15g / L, the bacteria micelles particle size is 300-500μm, and the dissolved oxygen is 15-20 mg / L; The pressure inside the reactor is 0.35MPa, and after the sewage is pressurized and aerated for 6-8 hours, the water is discharged through the built-in MBR membrane system. The COD concentration of the effluent is tested to be 60-100 mg / L, and the ammonia nitrogen concentration is 5-8 mg / L. , COD and ammonia nitrogen removal rates are greater than 94%, and the effluent effect is better.

Embodiment 2

[0039] Treatment object: landfill leachate anaerobic treatment effluent: brownish yellow, COD concentration is 2500-3000 mg / L, ammonia nitrogen concentration is 300-350 mg / L, pH value is 6-8.

[0040]After the sludge is domesticated, the sludge concentration in the device reaches 8-15g / L, the bacteria micelles particles are 300-500μm, and the dissolved oxygen is 15-20 mg / L; at this time, the sewage to be treated is added to the device and adjusted The pressure in the reactor is 0.4MPa, and the sewage is pressurized and aerated in it for 10-12 hours, and the water is discharged through the built-in membrane system. The COD concentration of the effluent is 200-300mg / L, and the ammonia nitrogen concentration is 10-25 mg / L. The COD and ammonia nitrogen removal rates are both greater than 90%, and the effluent effect is good, which is conducive to the subsequent further advanced treatment to meet the discharge standards.

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Abstract

The invention discloses a pressurizing and aerating MBR (Membrane Bioreactor) water treatment device. The device comprises a tower body, wherein a guide plate, a gas diffusion system, an MBR membrane system, a support rid and a pressure sensor are arranged in the tower body from bottom to top. The tower body is further internally provided with a drainage straight cylinder. The gas diffusion system is connected with a gas storage tank, an air compressor and a pressure adjusting work station out of the towel body sequentially through a gas inlet tube. The pressure adjusting work station is further communicated with the pressure sensor. With the adoption of the device provided by the invention, advantages of two processes of pressurizing and aerating and MBR membrane treatment can be coordinately and perfectly exerted, and the treatment efficiency and the removal rate of pollutants are remarkably superior to those of common aerobic biological treatment.

Description

technical field [0001] The invention relates to a pressurized aeration MBR water treatment device and method. Background technique [0002] With the rapid development of my country's industry, more and more industries produce a large amount of high-concentration organic wastewater (some containing high ammonia nitrogen), such as petrochemical, printing and dyeing, papermaking, pharmaceuticals, leather, cosmetics, surface treatment, synthetic resin, landfill leachate and other industries. The amount of these high-concentration organic wastewater is large and scattered. The sewage contains a large amount of organic pollutants and nitrogen elements, which will undergo oxidation and decomposition reactions when discharged into surface water bodies. During the decomposition process, a large amount of dissolved oxygen in the water body is consumed, and eventually the water body lack Oxygen, resulting in the death of fish and other aquatic animals in the water body because they can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 曹姝文周林刘伟吴早春黄德智
Owner GUANGZHOU EP ENVIROMENTAL ENG
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