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Vortex biological fluidized bed reactor and operation method thereof

A biological fluidized bed and reactor technology, applied in chemical instruments and methods, biological treatment devices, sustainable biological treatment, etc., can solve the problems of low biochemical treatment efficiency, low sludge concentration, and limited sewage treatment scenarios. Achieving the effect of avoiding loss and improving precipitation efficiency

Active Publication Date: 2020-11-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Because the contact frequency of sewage and biofilm is higher than that of conventional bio-filled tanks, the removal rate of pollutants by biological fluidized bed is higher, but there are still some defects in its application process
If the fluidization state of the filler is not good and the sludge concentration is low, it is difficult to improve the removal efficiency. Chinese invention patent CN20150652524.3 discloses a new type of aerobic biological fluidized bed reactor and its process. The reactor includes support, reactor Tanks, external pumps and inclined plate clarifiers, etc.
However, the reactor uses the supernatant as the reflux liquid, which cannot quickly increase the sludge concentration inside the reactor, resulting in low biochemical treatment efficiency, limited sewage treatment scenarios, and is only suitable for specific sewage treatment

Method used

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  • Vortex biological fluidized bed reactor and operation method thereof
  • Vortex biological fluidized bed reactor and operation method thereof
  • Vortex biological fluidized bed reactor and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like Figure 1~4 As shown, a swirling biological fluidized bed reactor includes a reactor shell 1 with a water outlet 7 on the upper end sidewall and a second mud discharge port 61 on the lower end sidewall, and the inner cavity of the reactor shell 1 is provided with There is a reactor 41, and the bottom side wall of the reactor 41 is provided with a first mud discharge port 8, and its specific structure is as follows:

[0039] The reactor 41 extends into the inner cavity of the reactor shell 1 and is provided with a packing reaction zone 4. The part of the inner cavity of the reactor 41 that extends out of the reactor shell 1 is divided into a swirl reaction zone 2 and an aeration zone from top to bottom. 3.

[0040] Two ejectors 21 are oppositely arranged along the outer wall of the swirling reaction zone 2 of the reactor 41; the ejector inlet 211 of the ejector 21 is connected to the lift pump, and the ejector suction pipe 213 of the ejector 21 and the correspondin...

Embodiment 2

[0049] Embodiment two and experimental example one except the following content, all the other parts are the same:

[0050] The vortex reaction zone 2 of the reactor 41 is provided with three ejectors 21 at intervals along the outer wall, and the angle between two of the three ejectors 21 is 120°; the ejector inlet 211 of the ejector 21 is connected with the lift pump, and the jet The ejector suction pipe 213 of the ejector 21 is connected to the corresponding second mud outlet 61 , and the ejector outlet 212 of the ejector 21 enters the interior of the reactor 41 tangentially along the side wall of the reactor 41 .

Embodiment 3

[0052] Embodiment three and experimental example one except the following content, all the other parts are the same:

[0053] The vortex reaction zone 2 of the reactor 41 is provided with four injectors 21 at intervals along the outer wall, and the angle between two of the four injectors 21 is 90°; the injector inlet 211 of the injector 21 is connected to the lift pump, The ejector suction pipe 213 of the ejector 21 is connected to the corresponding second mud outlet 61 , and the ejector outlet 212 of the ejector 21 enters the reactor 41 tangentially along the side wall of the reactor 41 .

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Abstract

The invention relates to the technical field of biological sewage treatment, in particular to a swirling biological fluidized bed reactor, which comprises a swirling reaction zone, an aeration zone, afiller reaction zone, a transition zone, a settling zone and a water outlet zone; wherein the jet vortex reaction area consists of a jet device and a pipeline, the aeration area consists of a microporous aerator and an aeration pipeline, the filler reaction area comprises suspended biological filler, a partition plate and a reflux collection device, and the settling area comprises a blocking device and a water outlet tank. By using the reactor, the concentration of sludge in the reactor can be rapidly increased, fluidization of sewage and filler in the reactor is optimized, and the removal load of pollutants is effectively increased; in addition, the reactor is convenient to operate, reasonable in integrated design, suitable for conventional and emergency treatment of various kinds of wastewater and easy to apply and popularize.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to a jet whirl biological fluidized bed reactor and an operating method thereof. Background technique [0002] Biological fluidized bed is a sewage treatment process that combines traditional activated sludge process and biofilm process and introduces fluidization technology. It has the characteristics of activated sludge process and biofilm process. The membrane method has the characteristics of high load and good removal effect of organic matter. [0003] Because the contact frequency of sewage and biofilm is higher than that of conventional biological filling tank, the removal rate of pollutants by biological fluidized bed is higher, but there are still some defects in its application process. For example, the fluidization state of the filler is poor and the sludge concentration is low, which makes it difficult to improve the removal efficiency. Chinese inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/1236C02F2203/006Y02W10/10
Inventor 黄辉彭冲范林任洪强
Owner NANJING UNIV
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