External anaerobic ammonia oxidation membrane bioreactor

A technology of membrane bioreactor and anaerobic ammonium oxidation, which is applied in the direction of anaerobic digestion and treatment, can solve the problems of unfavorable living environment for anaerobic ammonium bacteria and sludge loss, and achieve the effect of avoiding sludge loss and efficient denitrification , to ensure the effect of anaerobic environment

CN101962225BInactive Publication Date: 2012-07-25HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-07-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an external anaerobic ammonia oxidation membrane bioreactor and relates to an external membrane bioreactor, which aim to solve the problems of serious sludge run-off of the current anaerobic ammonia oxidation reactors and adverse living environment of anaerobic ammonia oxidation bacteria due to frequent extraction of membrane components in built-in anaerobic ammonia oxidation membrane bioreactors. In the external anaerobic ammonia oxidation membrane bioreactor, a plurality of membrane filaments are arranged in an organic glass pipe along the direction of a central axis; a water inlet tank is communicated with the inlet end of a water inlet pump; the water inlet pump is electrically connected with an electronic ball float valve; the electronic ball float valve is arranged in an anaerobic tank; the water inlet pump is communicated with the anaerobic tank; a stirring paddle and a connecting pipe of a moisture flowmeter are arranged in the anaerobic tank; the anaerobic tank is communicated with an organic glass cylinder; each membrane filament is communicated with a water outlet pump; the organic glass cylinder is communicated with a reflux pump; the reflux pump is communicated with the anaerobic tank; the water outlet pump is communicated with a water outlet cylinder; a pressure sensor is connected with a data acquisition module; the data acquisition module is connected with a computer; a liquid level meter is arranged in the water outlet cylinder; and the liquid level meter is connected with the data acquisition module. The external anaerobic ammonia oxidation membrane bioreactor is used for sewage treatment.
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Description

technical field

[0001] The invention relates to an external membrane bioreactor. Background technique

[0002] Biological denitrification technology has developed rapidly in the past 20 years and has been widely used in production practice. But the most widely used is still the traditional nitrification and denitrification process. However, there are many problems in the traditional nitrification and denitrification process: the process is long, the floor area is large, and the infrastructure investment is high; in order to obtain a high sludge concentration and denitrification efficiency, sludge reflux and nitrification liquid reflux are required, and power consumption is large; Alkali is added to neutralize the acidity produced during the nitrification process, and the carbon source is added to the denitrification process, resulting in high operating costs; the sludge has weak resistance to impact loads; it may cause secondary pollution, etc.

[0003] Therefore, it is im...

Examples

specific Embodiment approach 1

[0010] Specific implementation mode one: combine figure 1 Describe this embodiment, the bioreactor of this embodiment includes water inlet tank 1, water inlet pump 2, electronic float valve 3, anaerobic tank 4, stirring paddle 5, wet gas flow meter 6, water outlet pump 7, reflux pump 8, Water outlet cylinder 9, pressure sensor 10, data acquisition module 11, membrane assembly 12 and liquid level gauge 13, membrane assembly 12 is composed of cylindrical plexiglass cylinder 12-1, air pressure balance tube 12-2 and multiple membrane wires 12-3 , the top of the plexiglass cylinder 12-1 is provided with an air pressure balance tube 12-2, a plurality of membrane filaments 12-3 are arranged in the plexiglass cylinder 12-1 along the direction of the central axis, the inlet end of the water inlet tank 1 and the water inlet pump 2 connected, the water inlet pump 2 is electrically connected with the electronic float valve 3, the electronic float valve 3 is set in the anaerobic tank 4, t...

specific Embodiment approach 2

[0012] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the lower end of the pressure sensor 10 in this embodiment is higher than the water outlet end of each membrane filament 12-3, and the difference between the two is 2-3 cm. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0013] Specific implementation mode three: combination figure 1 Describe this embodiment, the bioreactor of this embodiment also comprises water bath container 15 and temperature control rod 16, and anaerobic tank 4 is arranged in water bath container 15, is provided with temperature control rod 16 in water bath container 15, and this structure guarantees anaerobic The temperature in tank 4 was maintained at 35°C. Other components and connections are the same as those in the first embodiment.

[0014] Working principle: The sewage in the water inlet tank 1 is continuously pumped into the anaerobic tank 4 by the water inlet pump 2. When the water level in the anaerobic tank reaches a certain value, the electronic float valve 3 rises, and the water inlet pump 2 is turned off to avoid excessive liquid level. The high temperature causes sludge loss; the anaerobic ammonium oxidizing bacteria are arranged in the anaerobic tank 4, and the stirring paddle 5 fully mixes the sewage in...