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Bio-membrane reactor realizing synchronous nitrification, denitrification and anaerobic ammoxidation and fast realization method

A biofilm reactor and anaerobic ammonium oxidation technology, which is applied in chemical instruments and methods, biological water/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problem of long generation cycle of anammox bacteria and difficult Coupled with problems such as synchronous use and slow growth, to achieve the effects of partitioned growth, shortened start-up time, and high mass transfer efficiency

Active Publication Date: 2016-02-24
SHANDONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In the existing anammox reaction, anammox bacteria have a long generation cycle, slow growth, and are difficult to cultivate. Even a small amount of sludge loss will have a huge impact on the start-up of the reactor; while nitrifying bacteria are aerobic Bacteria, denitrification and anammox bacteria are anaerobic bacteria, especially anammox is particularly sensitive to oxygen. Due to the characteristics of these three bacteria, it is difficult to couple nitrification-denitrification-anammox in the existing technology Synchronous use, therefore, how to effectively coordinate the three bacteria is a difficult point today

Method used

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  • Bio-membrane reactor realizing synchronous nitrification, denitrification and anaerobic ammoxidation and fast realization method
  • Bio-membrane reactor realizing synchronous nitrification, denitrification and anaerobic ammoxidation and fast realization method
  • Bio-membrane reactor realizing synchronous nitrification, denitrification and anaerobic ammoxidation and fast realization method

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Embodiment 1

[0048] A biofilm reactor for synchronous nitrification-denitrification-anammox, with a structure such as figure 1 As shown, including a reactor body 1, an online dissolved oxygen meter and a pH meter, the reactor body is a vertical cylinder, and a water inlet 2 is provided at the bottom of the side wall of the reactor body, and a water outlet 3 is provided at the top. A spiral hollow fiber membrane tube 4 is arranged inside the reactor body, and the hollow fiber membrane tube 4 extends from the upper part of the reactor body to the lower part along the central axis of the reactor body. The diameter of the hollow fiber membrane tube 4 is 1mm, and the length is 8m. The membrane pore diameter on the tube wall is 0.1um, and the helical pitch of the helical hollow fiber membrane tube 4 is 6cm. In the space surrounded by the hollow fiber membrane tube spiral, a non-woven filler 5 is provided. The non-woven filler 5 includes 6 dendritic strip-shaped non-woven sheets connected togethe...

Embodiment 2

[0050] Utilize the biofilm reactor of embodiment 1 to realize the method for synchronous nitrification-denitrification-ANAMMOX, comprising steps as follows:

[0051] (1) Add 3L of activated sludge into the membrane aerated biofilm reactor, the effective volume of the membrane aerated biofilm reactor is 10L; the activated sludge is discharged from a municipal sewage treatment plant in Jinan City Sludge, through filtering and screening to remove impurities such as leaves, waste paper, waste plastics, etc. in the sludge, and then add the sludge to the reaction zone of the membrane aerated biofilm reactor, and use a peristaltic pump from the bottom of the reactor to Enter the waste water to be treated, so that the hydraulic retention time of the sewage to be treated in the reactor is 24 hours, and remove the floating and expanding sludge. After the membrane aerated biofilm reactor has been running for 7 days, the sedimented sludge at the bottom is collected as activated sludge.

...

Embodiment 3

[0057] Utilize the biofilm reactor of embodiment 1 to realize the method for synchronous nitrification-denitrification-ANAMMOX, comprising steps as follows:

[0058] (1) Add 3L of anaerobic granular sludge into the membrane aerated biofilm reactor, the effective volume of the membrane aerated biofilm reactor is 10L; the anaerobic granular sludge is taken from the wastewater treatment of a paper mill in Zibo The sludge discharged from the factory is filtered and screened to remove impurities such as leaves, waste paper, and waste plastics in the sludge, and then the sludge is added to the reactor, and the wastewater to be treated is fed from the bottom of the reactor with a peristaltic pump. The hydraulic retention time of the sewage to be treated in the reactor is 24 hours, and the floating and expanding sludge is removed. After the membrane aerated biofilm reactor has been operated for 7 days, the sedimented sludge at the bottom is collected as activated sludge.

[0059] (2) ...

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Abstract

The invention relates to a bio-membrane reactor realizing synchronous nitrification, denitrification and anaerobic ammoxidation and a fast realization method. The interior of a reactor body is provided with a spiral hollow fiber membrane tube, the hollow fiber membrane tube extends from the upper part of the reactor body to the lower part of the reactor body along the central axis of the reactor body, a space spirally surrounded by the hollow fiber membrane tube is internally provided with a non-woven packing, and the edge of the non-woven packing is 0.5-3 cm away from the hollow fiber membrane tube; one end of the spiral hollow fiber membrane tube is closed, and the other end is externally connected with an aeration system. The bio-membrane reactor successfully makes a coupling reaction start up after running for 80-160 days, and efficiently removes nitrogen and organic matters in sewage; the method can realize synchronous nitrification-denitrification-anaerobic ammoxidation reaction in the same reactor, effectively shortens the start-up time, moreover, simplifies the process flow, and saves the operation cost.

Description

technical field [0001] The invention relates to a biofilm reactor and a rapid realization method for realizing synchronous nitrification-denitrification-anammox, and belongs to the field of wastewater biological treatment. Background technique [0002] Due to the high cost of traditional nitrification and denitrification process and the generation of N 2 O gas, anaerobic ammonia oxidation process as a new nitrogen removal process, is especially suitable for the field of high ammonia nitrogen wastewater treatment. This process means that under anaerobic or anoxic conditions, the anammox bacteria use nitrite nitrogen as the electron acceptor to directly convert ammonia nitrogen into nitrogen gas, thereby avoiding the participation of organic carbon sources and oxygen, and reducing the cost of denitrification It is greatly reduced, only 1 / 10 of the traditional technical method, so the high efficiency and low cost of the anaerobic ammonium oxidation process has attracted widesp...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/301C02F2101/16C02F2209/16
Inventor 倪寿清孙娜张建
Owner SHANDONG UNIV
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