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Membrane aerated biofilm micro-aerobic sludge bed process and wastewater treatment method thereof

A membrane aeration biofilm and sludge bed technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problem of complex sludge treatment process, large infrastructure investment, high energy Consumption and other issues, to achieve the effect of improving oxygen mass transfer efficiency, low operating energy consumption, and reducing energy consumption

Inactive Publication Date: 2019-10-18
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of the prior art for the treatment of general C / N ratio wastewater and low C / N ratio wastewater, such as large area occupation, high energy consumption, complex sludge treatment process and large infrastructure investment, the purpose of the present invention is to provide membrane aerated biological Membrane Microaerobic Sludge Bed Process and Its Wastewater Treatment Method

Method used

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  • Membrane aerated biofilm micro-aerobic sludge bed process and wastewater treatment method thereof

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specific Embodiment approach

[0018] The effective membrane area per unit volume of the biofilm aeration component 5 is controlled at 0.001-1㎡ / L.

[0019] The biofilm aeration assembly 5 is completely submerged in the sludge layer at the bottom of the reactor. The biofilm aeration component is produced by Hangzhou Haotian Membrane Technology Co., Ltd., and the product name is polypropylene hydrophobic hollow fiber membrane.

[0020] The sludge volume accounts for 1-100% of the total volume of the biofilm microaerobic sludge bed 1 .

[0021] The membrane aeration biofilm micro-oxygen sludge bed process of the present invention is realized by adopting the following technical scheme: the film aeration biofilm micro-oxygen sludge bed process comprises a biofilm micro-oxygen sludge bed, a sludge bed inlet pipe, Sludge bed outlet pipe, sludge discharge pipe, biofilm aeration component, air pump, circulation pump / peristaltic pump, first air flow meter, first pressure gauge, second air flow meter, second pressure...

Embodiment 1

[0028] Example 1: Combining figure 1 Illustrate present embodiment, present embodiment utilizes the concrete method of processing low C / N ratio waste water described in specific embodiment as follows:

[0029] The waste water enters from the bottom of the biofilm microaerobic sludge bed 1 through the sludge bed inlet pipe 2 through the peristaltic pump, and the pollutants in the waste water are treated by the microorganisms attached to the outside of the biofilm aeration module 5 and the sludge bed flora, and the biological Membrane aeration module 5 provides the oxygen required for the process, and the first air flowmeter 8 and the first pressure gauge 9 on the sludge bed inlet pipe 2 and the sludge bed outlet pipe 3, as well as the second air flowmeter 10 and the first pressure gauge Table 11 Control the amount of oxygen, and control the dissolved oxygen concentration to 0.3mg / L~0.5mg / L; after the wastewater is treated, it is overflowed and discharged from the sludge bed out...

Embodiment 2

[0033] Embodiment 2: Combination figure 1 Illustrate present embodiment, present embodiment utilizes the concrete method of processing general C / N ratio waste water described in specific embodiment as follows:

[0034]The waste water enters from the bottom of the biofilm microaerobic sludge bed 1 through the sludge bed inlet pipe 2 through the peristaltic pump, and the pollutants in the waste water are treated by the microorganisms attached to the outside of the biofilm aeration module 5 and the sludge bed flora, and the biological Membrane aeration module 5 provides the oxygen required for the process, and the first air flowmeter 8 and the first pressure gauge 9 on the sludge bed inlet pipe 2 and the sludge bed outlet pipe 3, as well as the second air flowmeter 10 and the first pressure gauge Table 11 Control the amount of oxygen, and control the concentration of dissolved oxygen to 0.6mg / L~0.9mg / L; after the wastewater is treated, it is discharged from the overflow of the ou...

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Abstract

Belonging to the field of sewage denitrification treatment, the invention discloses a membrane aerated biofilm micro-aerobic sludge bed process and a wastewater treatment method thereof. The membraneaerated biofilm micro-aerobic sludge bed process adopts a biofilm micro-aerobic sludge bed, a sludge bed water inlet pipe, a sludge bed water outlet pipe, a sludge discharge pipe, a biofilm aeration component, an air pump, a circulating pump, a peristaltic pump, air flow meters and pressure gauges. The treatment method realizes the mutualism and collaborative metabolism of aerobic bacteria, anaerobic bacteria and facultative anaerobes in a micro-aerobic environment, at the same time utilizes the efficient oxygen mass transfer efficiency of the membrane aeration component and enables wastewaterto flow on the outer surface of the biofilm to form back diffusion of oxygen and pollutants, and can realize effective removal of pollutants in a bioreactor. The process and the treatment method provided by the invention are suitable for denitrification treatment of urban sewage and industrial wastewater, and have the advantages of high treatment efficiency, high energy utilization rate, stable effluent effect, fast start-up speed, etc.

Description

technical field [0001] The invention relates to a membrane aeration biofilm micro-oxygen sludge bed process and a wastewater treatment method thereof, and belongs to the field of sewage denitrification treatment. Background technique [0002] In recent years, in order to meet the increasing discharge standards of sewage treatment, more energy needs to be consumed for the removal of organic matter and nitrogen pollutants. The traditional activated sludge method generally has problems such as high aeration energy consumption, low denitrification efficiency, insufficient denitrification carbon source, and large amount of residual sludge, which has been difficult to meet the sustainable development needs of low-carbon energy saving. [0003] Membrane aeration biofilm module is a new type of water treatment aeration method, which belongs to micro-aerobic technology. It mainly uses hydrophobic gas to separate hollow fiber membranes, and uses its gas-liquid separation characteristi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F101/16
CPCC02F3/1268C02F2101/16Y02W10/10
Inventor 赵博玮马骁岳秀萍谢飞崔颖张潇
Owner TAIYUAN UNIV OF TECH
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