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Membrane aeration aerobic granular sludge reactor, and method for culturing aerobic granular sludge and synchronously removing nitrogen and carbon of reactor

A technology of aerobic granular sludge and expanded granular sludge, which is applied in chemical instruments and methods, aerobic and anaerobic process treatment, water/sludge/sewage treatment, etc., to reduce aeration costs and high-efficiency oxygen mass transfer Rate, the effect of improving aeration efficiency

Inactive Publication Date: 2020-02-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem of cumbersome devices and complex operations required for switching between anaerobic and aerobic environments, and the existing aerobic granular sludge The operation mode is single and there are problems of low aeration efficiency and high aeration cost. The invention provides a membrane aerated aerobic granular sludge reactor and a method for cultivating aerobic granular sludge and treating sewage. The adopted technology The scheme is as follows:

Method used

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  • Membrane aeration aerobic granular sludge reactor, and method for culturing aerobic granular sludge and synchronously removing nitrogen and carbon of reactor
  • Membrane aeration aerobic granular sludge reactor, and method for culturing aerobic granular sludge and synchronously removing nitrogen and carbon of reactor
  • Membrane aeration aerobic granular sludge reactor, and method for culturing aerobic granular sludge and synchronously removing nitrogen and carbon of reactor

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Embodiment 1

[0046] This embodiment provides a membrane aerated aerobic granular sludge reactor, which includes an expanded granular sludge bed reactor 1, a membrane aeration system, an online dissolved oxygen control system, Circulation bypass 6, water inlet pipeline 9 and water outlet pipeline 10; wherein: expanded granular sludge bed reactor 1 is used as a tank body for cultivating aerobic granular sludge;

[0047] The expanded granular sludge bed reactor 1 includes a lower reaction zone and an upper solid-liquid separation zone. The upper solid-liquid separation zone is formed by increasing the inner diameter of the top of the lower reaction zone; the expanded granular sludge bed reactor 1 is equipped with a circulation outlet The water outlet 7, the water outlet 14 and the water inlet 13, the circulating water outlet 7, the water outlet 14 and the water inlet 13 are sequentially arranged at the upper, middle and bottom of the expanded granular sludge bed reactor 1; the circulating wate...

Embodiment 2

[0059] This embodiment provides a method for cultivating aerobic granular sludge using the membrane aerated aerobic granular sludge reactor of Example 1. The method is implemented according to the following steps:

[0060] 1. Inoculate the activated sludge into the expanded granular sludge bed reactor 1.

[0061] 2. Inject sewage or waste water into the expanded granular sludge bed reactor 1 from the water inlet 13 through the water inlet pump, so that the water level of the sewage or waste water reaches or is higher than the circulating water outlet 7. After the water intake is completed, start the circulating pump to make the sewage Or the waste water flows into the circulation bypass 6 from the circulation outlet 7 under the drive of the circulation pump and flows back to the inside of the expanded granular sludge bed reactor 1 through the water inlet 13, and then flows up in the expanded granular sludge bed reactor 1, Then flow into the circulating bypass 6 from the circul...

Embodiment 3

[0068] This embodiment provides a sewage treatment method, specifically using the membrane aerated aerobic granular sludge reactor in Example 1 and the mature aerobic granular sludge cultivated according to the method in Example 2 to synchronize sewage or wastewater A method for denitrification and carbon removal, the method is to inject the sewage or waste water to be treated into the expanded granular sludge bed reactor 1 until the water level of the treated sewage or waste water reaches or is higher than the circulating water outlet 7, and the water body is circulated through the circulating pump Circulating flow in the expanded granular sludge bed reactor 1 and the circulation bypass 6, control the rising flow rate of the water body in the expanded granular sludge bed reactor 1 to 0.10m / min~0.25m / min, and operate under the condition of no aeration Complete the anaerobic stage operation in 60 minutes; continue to keep the circulation pump running to ensure that the water bod...

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Abstract

The invention discloses a membrane aeration aerobic granular sludge reactor, and a method for culturing aerobic granular sludge and synchronously removing nitrogen and carbon of the reactor, and belongs to the technical field of sewage treatment. The membrane aeration aerobic granular sludge reactor comprises an expanded granular sludge bed reactor, a membrane aeration system, a dissolved oxygen online control system, a circulating bypass, a water inlet pipeline and a water outlet pipeline, wherein the aerobic granular sludge is cultured in the expanded granular sludge bed reactor; the membrane aeration system comprises a hollow fiber membrane, a high-pressure pure oxygen bottle and an oxygen conveying pipeline; and the dissolved oxygen online control system comprises an industrial-grade online dissolved oxygen instrument, a dissolved oxygen electrode and an electromagnetic valve. The invention also provides the method for culturing the aerobic granular sludge and treating sewage by using the reactor. The reactor can be applied to the culture of the aerobic granular sludge, the culture effect is very good, and the aerobic granular sludge obtained through culture and the reactor canalso be used for synchronously removing carbon and nitrogen pollutants in the sewage.

Description

technical field [0001] The invention relates to a membrane aerated aerobic granular sludge reactor and a method for cultivating aerobic granular sludge and synchronous denitrification and carbon removal, and belongs to the technical field of sewage treatment. Background technique [0002] Aerobic granular sludge is mainly composed of nitrifying bacteria, denitrifying bacteria, phosphorus accumulating bacteria and polysaccharide bacteria, so it has the ability to simultaneously remove carbon and nitrogen in one reaction unit. For the biological treatment system, the treatment effect of biofilm is better than that of suspended activated sludge, and aerobic granular sludge can be regarded as a special biofilm formed by self-aggregation of cells to a certain extent, so it also has biological Advantages of membrane and activated sludge - good settling performance and high biological activity. Good settling performance helps the separation of mud and water, thus eliminating the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/26C02F3/30
CPCC02F3/301C02F3/1205C02F3/302C02F3/26C02F2209/22Y02W10/10
Inventor 谢国俊谭馨聂文博范胜强刘冰峰邢德峰丁杰
Owner HARBIN INST OF TECH
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