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Pressure type membrane bioreactor technique of suspension bed and device

A membrane bioreactor, pressure-type technology, applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of high concentration of organic matter in wastewater, difficulty in obtaining satisfactory results, and difficulty in wastewater treatment , to achieve stable effluent water quality, good solid-liquid separation effect, and improved oxygen transfer efficiency

Active Publication Date: 2009-09-09
GO HIGHER ENVIRONMENT GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of wastewater has a high concentration of organic matter, low biodegradability, and even toxic substances. It is difficult to treat wastewater, and it is difficult to achieve satisfactory results with general biological or physical and chemical treatment methods.

Method used

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  • Pressure type membrane bioreactor technique of suspension bed and device

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example 1

[0017] Example 1: The source of sewage is wastewater from a pharmaceutical factory, and the water quality condition is: COD Cr Content 4000~5000mg / L, methanol 8~10mg / L, benzene 3.0~3.5mg / L, SS 250~400mg / L. Control the pressure P=0.3MPa, adjust the air intake of the ejector to control the dissolved oxygen in the reactor at 5.0-6.0mg / L. After being treated by a pressure membrane bioreactor, the final effluent reaches the national reuse water standard, of which COD Cr The concentration is less than 30mg / L, and the turbidity of the effluent is less than 0.5mg / L.

example 2

[0018] Example 2: The source of sewage is monosodium glutamate wastewater, and the water quality condition is: COD Cr Content 2000~3000mg / L, BOD 5 The content is 800~1200mg / L, and the ammonia nitrogen is 200~320mg / L. Control the pressure P=0.2MPa, adjust the air intake of the ejector to control the dissolved oxygen in the reactor at 2.0-4.0mg / L. After being treated by a pressure membrane bioreactor, the final effluent COD Cr The concentration is less than 40mg / L, and the turbidity of the effluent is less than 0.6mg / L. The effluent water quality meets the national standard for reused water.

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Abstract

The invention discloses a pressure type membrane bioreactor technique of a suspension bed and a device, which relate to an equipment technique for treating organic wastewater with high concentration and difficult degradation. The invention is characterized in that the device comprises a pressure type membrane bioreactor, jet pressurized aeration equipment and a clean water tank. The pressure type membrane bioreactor is internally provided with particular suspended carriers which are in homogeneous fluidization in mixed liquor so as to enhance mass transfer of pollutants to a biomembrane; the suspended carriers have diverse microbial morphology and provide environment for growth of particular floras; the jet pressurized aeration equipment overcomes the influence of negative pressure of a jet device on the internal pressure of the bioreactor, improves oxygen transfer efficiency and accelerates degradation rate of microorganisms to organics; the membrane filtration is adopted for water yielding and a water pump is saved due to the difference of internal pressure and external pressure, thus saving cost and energy consumption and realizing good separation of solid and liquid. The bioreactor has compact structure, small occupied area, high efficiency and low energy consumption, has strong adaptability to load change of influent organics and toxic matters, is easy to operate and manage and is particularly applicable to treating organic wastewater with medium and high concentration and difficult degradation.

Description

technical field [0001] The invention belongs to the technical field of water treatment equipment, and relates to a water treatment process and device of a pressure-type suspended bed membrane bioreactor. Background technique [0002] The treatment of high-concentration refractory organic wastewater is a recognized problem in domestic and foreign sewage treatment circles. For this type of wastewater, there are many researches at home and abroad on coking wastewater, pharmaceutical wastewater (including traditional Chinese medicine wastewater), textile / printing and dyeing wastewater, chemical wastewater, food wastewater and other industrial wastewater. This type of wastewater has a high concentration of organic matter, low biodegradability, and even toxic substances. It is difficult to treat wastewater, and it is difficult to achieve satisfactory results with general biological or physical and chemical treatment methods. [0003] The pressure aeration bioreactor is a low-pres...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/12C02F3/10C02F1/44
CPCY02W10/10
Inventor 陈福泰范正虹杜接弟高玉军
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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