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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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 anae

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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

Examples

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Example Embodiment

[0047] Example 1

[0048] A biofilm reactor for simultaneous nitrification, denitrification, and anammox, the structure is as follows figure 1 As shown, it includes a reactor body 1, an online dissolved oxygen meter and a pH meter. The reactor body is a vertical cylindrical shape. The bottom of the side wall of the reactor body is provided with a water inlet 2 and the upper part is provided with a water outlet 3. A spiral hollow fiber membrane tube 4 is arranged inside the reactor body. The hollow fiber membrane tube 4 extends from the upper part of the reactor body along the central axis of the reactor body to the lower part. The hollow fiber membrane tube 4 has a diameter of 1 mm and a length of 8 m. The hollow fiber membrane tube 4 The pore size of the membrane on the tube wall is 0.1um, and the spiral pitch of the spiral hollow fiber membrane tube 4 is 6cm. A non-woven fabric filler 5 is arranged in the spirally enclosed space of the hollow fiber membrane tube. The non-woven ...

Example Embodiment

[0049] Example 2

[0050] The method for realizing simultaneous nitrification-denitrification-anammox by using the biofilm reactor of Example 1 includes the following steps:

[0051] (1) Add 3L of activated sludge to the membrane aerated biofilm reactor, the effective volume of the membrane aerated biofilm reactor is 10L; the activated sludge is taken from a municipal sewage treatment plant in Jinan The sludge is filtered and screened to remove the leaves, waste paper, waste plastic and other impurities in the sludge, and then the sludge is added to the reaction zone of the membrane aerated biofilm reactor, and the peristaltic pump is used from the bottom of the reactor. Into the wastewater to be treated, the hydraulic residence time of the wastewater to be treated in the reactor is 24 hours, and the floating and expanded sludge is removed. After the membrane aerated biofilm reactor runs for 7 days, the bottom sedimentation sludge is collected as activated sludge.

[0052] (2) Use a...

Example Embodiment

[0056] Example 3

[0057] The method for realizing simultaneous nitrification-denitrification-anammox by using the biofilm reactor of Example 1 includes the following steps:

[0058] (1) Add 3L of anaerobic granular sludge to the membrane aerated biofilm reactor, the effective volume of the membrane aerated biofilm reactor is 10L; the anaerobic granular sludge is taken from the sewage treatment of a paper mill in Zibo The sludge discharged from the plant is filtered and screened to remove the leaves, waste paper, waste plastic and other impurities in the sludge, and then the sludge is added to the reactor, and the waste water to be treated is passed through the peristaltic pump from the bottom of the reactor. The hydraulic retention time of the sewage to be treated in the reactor is 24 hours to remove the floating and expanded sludge. After the membrane aerated biofilm reactor runs for 7 days, the bottom sedimentation sludge is collected as activated sludge.

[0059] (2) Use a peris...

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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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