Moving bed biofilm reactor

A moving bed biofilm and reactor technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve poor nitrogen removal effect, affect sewage treatment effect, aeration Inhomogeneity and other problems, to achieve the effect of good impact resistance

Inactive Publication Date: 2017-03-22
CHENGDU ANJIE YIKANG ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology

However, the aeration device of the existing biofilm reactor is arranged at the bottom of the reactor, and the aeration is uneven, which affects the sewage treatment effect
Secondly, the existing reactors have poor nitrogen removal effect

Method used

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  • Moving bed biofilm reactor

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Embodiment Construction

[0006] The invention provides a moving bed biofilm reactor, which includes a water pump 4 and an MBBR reactor 3 . The water pump pumps the water in the sewage pool into the MBBR reactor. When the MBBR is started, the influent quality concentration is low. The air pump 4 of the reactor is connected to the aeration device. The aeration devices 2 and 3 are respectively arranged in the middle and At the bottom, the amount of aeration is adjusted to just fully fluidize the fill. The biofilm on the filler in the early stage of treatment is very thin, so it requires a lot of energy to fluidize it, and the hydraulic retention time is long at the beginning, so the air-water ratio is as high as 25:1. As the influent flow rate increases, the hydraulic retention time becomes shorter and the biofilm on the filler becomes thicker. At this time, the energy consumption for completely fluidizing the filler becomes smaller, and the air-water ratio is about 10:1 to 15:1.

[0007] When the MBBR ...

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Abstract

The present invention relates to a moving bed biofilm reactor, which comprises a water pump and an MBBR reactor, and is characterized in that the gas pump of the reactor is connected to aeration devices, the aeration devices are respectively arranged on the middle portion and the bottom portion of the reactor, the water outlet of the reactor is connected to a precipitation pool through a pipeline, the precipitation pool is respectively connected to an anaerobic pool and an aerobic pool through the water pump, the aeration devices are respectively arranged in the anaerobic pool and the aerobic pool, and the water overflow port of the aerobic pool directly discharges out the treated water. According to the present invention, the MBBR has good impact resistance, the removal rate is stabilized at more than 90% when the volume load of CODcr is 1-3 kg.(m<3>.d)<-1>, and the CODcr removal rate is more than 70% when the volume load achieves 6 kg.(m<3>.d)<-1>; and the water of the precipitation pool is subjected to the nitrification and denitrification reaction of the aerobic pool, such that the nitrogen in the sewage can be effectively removed, and the purification effect can be provided.

Description

technical field [0001] The invention relates to a moving bed biofilm reactor. Background technique [0002] The Moving Bed Biofilm Reactor (MBBR for short) is a new type of sewage treatment equipment that appeared in the mid-1980s. It combines the two processes of activated sludge method and biofilm method. The core is to add suspended fillers with a density close to water to the reactor as a carrier for microbial growth. The fillers are lifted by aeration and water flow in the reactor. It is in a fluidized state, and the microorganisms are in full contact with the wastewater to achieve the effect of sewage treatment. However, the aeration device of the existing biofilm reactor is arranged at the bottom of the reactor, and the aeration is not uniform, which affects the sewage treatment effect. Secondly, the existing reactors have poor nitrogen removal effect. Contents of the invention [0003] The invention provides a moving bed biofilm reactor, including a water pump a...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 胡林
Owner CHENGDU ANJIE YIKANG ENVIRONMENTAL PROTECTION TECH CO LTD
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