Axial mixing reflux stirring anaerobic sludge blanket reactor

Abstract

The invention discloses an axial mixing reflux stirring anaerobic sludge blanket reactor, which comprises an equipment base and an anaerobic reactor main body, the equipment base is provided with the anaerobic reactor main body, the top of the anaerobic reactor main body is provided with a motor and a biogas outlet, and the middle part of the anaerobic reactor main body is provided with a reflective reflux pipe. A water inlet is formed in one side of the anaerobic reactor main body, the water inlet is connected with a reflection type return pipe, a built-in axial flow propeller is arranged in the anaerobic reactor main body and is positioned above the reflection type return pipe, a three-phase separation packed bed is arranged above the built-in axial flow propeller, and the three-phase separation packed bed adopts bunchy dense suspension packing. The three-phase separation packed bed disclosed by the invention cannot be corroded by H2S gas generated in the process of anaerobic biochemical degradation of organic matters, the water distribution pipeline can be prevented from being blocked by sludge due to the arrangement of the reflective return pipe, the operation cost is effectively saved, and the integrated degree of the anaerobic reactor is better and the mud-water mixing effect is better due to the adoption of the built-in axial flow propeller.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an axially mixed reflux stirred anaerobic sludge bed reactor. Background Art

[0002] The traditional anaerobic reactor is mainly composed of a reactor shell, a three-phase separator, biological fillers, an external reflux pump and a water distribution pipe. During operation, the traditional anaerobic bioreactor has the following problems: H2S gas is produced during the anaerobic biochemical degradation of organic matter. H2S gas is corrosive and will corrode the three-phase separator of the traditional anaerobic bioreactor, resulting in the need to regularly replace the three-phase separator during wastewater treatment to ensure the stable operation of the wastewater treatment system, which increases the operating cost of the wastewater treatment system; the traditional internal circulation system adopts the form of a reflux pump, and the overall integration of the equipment is not high, which brings inconvenience to the overall insulation production and installation of the equipment; and the water distribution pipe at the bottom of the traditional anaerobic reactor is easily blocked by sludge, which increases the equipment maintenance and operation costs.

[0003] Therefore, how to provide an anaerobic sludge blanket reactor that saves operating costs and has a high degree of integration is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide an axial mixing reflow stirring anaerobic sludge bed reactor which saves operating costs and has a high degree of integration, so as to solve the above problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention discloses an axially mixed reflux stirring anaerobic sludge blanket reactor, comprising an equipment base and an anaerobic reactor body, wherein the anaerobic reactor body is arranged on the equipment base, a motor and a biogas outlet are arranged on the top of the anaerobic reactor body, a reflective reflux pipe is arranged in the middle of the anaerobic reactor body, a water inlet is arranged on one side of the anaerobic reactor body, the water inlet is connected to the reflective reflux pipe, so that wastewater enters the reflective reflux pipe of the anaerobic reactor body from the water inlet, a built-in axial flow propeller is arranged in the anaerobic reactor body and above the reflective reflux pipe, and a built-in axial flow propeller is arranged in the anaerobic reactor body and above the reflective reflux pipe. A three-phase separation packing bed is arranged above the built-in axial flow propeller, and a water outlet is arranged on one side of the three-phase separation packing bed. The three-phase separation packing bed adopts bundle-shaped dense suspended packing, and the fixed sludge bed is placed above the suspended sludge bed. Wastewater rises to the three-phase separation packing bed through the reflective reflux pipe, and part of the wastewater overflows from the water outlet after mud and water separation in the three-phase separation packing bed, and the sludge is blocked at the bottom of the three-phase separation packing bed, and biogas escapes from the biogas outlet. Another part of the wastewater is refluxed into the anaerobic biochemical system through the built-in axial flow propeller to fully mix the mud and water in the anaerobic reactor body.

[0007] Furthermore, observation holes are respectively provided on one side and the top of the anaerobic reactor body to facilitate observation of the internal conditions of the reactor and maintenance.

[0008] Furthermore, the anaerobic reactor body is provided with an instrument interface, a sampling port and a mud discharge port on the other side of the water inlet. By providing the instrument interface and the sampling port, it is convenient to monitor the water quality of the reactor outlet water.

[0009] Compared with the prior art, the beneficial technical effects of the present invention are:

[0010] The axial mixing reflux stirring anaerobic sludge bed reactor of the present invention adopts bundled dense hanging fillers instead of three-phase separators to separate solid, liquid and gas. The fixed sludge bed is placed above the suspended sludge bed, which can not only effectively intercept and separate the sludge, but also will not be corroded by H2S gas produced during the anaerobic biochemical degradation of organic matter. Therefore, the operating cost of the wastewater treatment system can be effectively controlled; at the same time, by adopting a built-in axial flow propeller instead of a circulating pump, the built-in axial flow propeller not only makes the anaerobic reactor more integrated, and the installation and insulation are more convenient, but also the mud-water mixing effect is better and the equipment treatment effect is better; and the bottom adopts a reflective reflux pipe instead of a traditional water distribution pipe, which can effectively avoid the problem of sludge blockage in the water distribution pipe, thereby improving the operating efficiency and saving the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the axially mixed reflux stirred anaerobic sludge blanket reactor of the present invention.

[0013] Explanation of the reference numerals: 1-motor; 2-biogas outlet; 3-observation hole; 4-water outlet; 5-three-phase separation packing bed; 6-built-in axial flow propeller; 7-anaerobic reactor body; 8-instrument interface; 9-sampling port; 10-water inlet; 11-sludge outlet; 12-equipment base; 13-reflective reflux pipe. DETAILED DESCRIPTION

[0014] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0015] In the description of the present invention, it should be understood that the terms "length", "width", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1As shown, the axial mixing reflux stirring anaerobic sludge blanket reactor of the embodiment of the present invention includes an anaerobic reactor body 7, an equipment base 12, a reflective reflux pipe 13, a built-in axial flow propeller 6 and a three-phase separation packed bed 5, wherein the anaerobic reactor body 7 is arranged above the equipment base 7, and observation holes 3 are provided on one side and above the anaerobic reactor body 7 to facilitate observation of the internal conditions of the reactor and maintenance.

[0019] In addition, a reflective reflux pipe 13 is provided in the middle of the anaerobic reactor body 7 , and a water inlet 10 connected to the reflective reflux pipe 13 is provided on one side of the anaerobic reactor body 7 , and wastewater enters the reflective reflux pipe 13 of the anaerobic reactor body 7 through the water inlet 10 .

[0020] Meanwhile, the anaerobic reactor body 7 is provided with an instrument interface 8, a sampling port 9 and a mud discharge port 11 on the other side of the water inlet 10. The instrument interface 8 and the sampling port 9 are provided to facilitate monitoring of the water quality of the reactor outlet water.

[0021] In this embodiment, a motor 1 and a biogas outlet 2 are provided on the top of the anaerobic reactor body 7 . The motor 1 supplies power to the device, and the biogas generated during the anaerobic biochemical degradation of organic matter escapes from the biogas outlet 2 .

[0022] Among them, a built-in axial flow propeller 6 is provided above the reflective reflux pipe 13, and a three-phase separation packing bed 5 is provided above the built-in axial flow propeller 6. Specifically, the three-phase separation packing bed 5 adopts a bundle of dense suspended packing, and the fixed sludge bed is placed above the suspended sludge bed. A water outlet 4 is provided on one side of the three-phase separation packing bed 5. Part of the wastewater overflows from the water outlet 4 after the mud and water are separated by the three-phase separation packing bed 5.

[0023] The working principle of the axial mixing reflux stirring anaerobic sludge blanket reactor of the embodiment of the present invention is as follows: wastewater enters the reflective reflux pipe 13 of the anaerobic reactor body 7 from the water inlet 10, and then the wastewater slowly rises to the three-phase separation packing bed 5 through the reflective reflux pipe 13. Part of the wastewater overflows from the water outlet 4 after the mud and water are separated in the three-phase separation packing bed 5, and the sludge is blocked at the bottom of the three-phase separation packing bed 5, and the biogas escapes from the biogas outlet 2. The three-phase separation packing bed 5 uses a bundle of densely suspended fillers instead of a three-phase separator to separate solid, liquid and gas, and will not be corroded by the H2S gas generated during the anaerobic biochemical degradation of organic matter. Another part of the wastewater is refluxed within the anaerobic biochemical system through the built-in axial flow propeller 6, so as to fully mix the mud and water in the anaerobic reactor body 7 and improve its degradation effect.

[0024] The axial mixing reflux stirring anaerobic sludge bed reactor of the present invention adopts bundled dense hanging fillers instead of three-phase separators to separate solid, liquid and gas. The fixed sludge bed is placed above the suspended sludge bed, which can not only effectively intercept and separate the sludge, but also will not be corroded by H2S gas produced during the anaerobic biochemical degradation of organic matter. Therefore, the operating cost of the wastewater treatment system can be effectively controlled; at the same time, by adopting a built-in axial flow propeller instead of a circulating pump, the built-in axial flow propeller not only makes the anaerobic reactor more integrated, and the installation and insulation are more convenient, but also the mud-water mixing effect is better and the equipment treatment effect is better; and the bottom adopts a reflective reflux pipe instead of a traditional water distribution pipe, which can effectively avoid the problem of sludge blockage in the water distribution pipe, thereby improving the operating efficiency and saving the operating cost.

[0025] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An axially mixed reflux stirred anaerobic sludge blanket reactor, characterized in that: The anaerobic reactor comprises an equipment base and an anaerobic reactor body, wherein the anaerobic reactor body is arranged on the equipment base, a motor and a biogas outlet are arranged on the top of the anaerobic reactor body, a reflective reflux pipe is arranged in the middle of the anaerobic reactor body, a water inlet is arranged on one side of the anaerobic reactor body, and the water inlet is connected with the reflective reflux pipe so that wastewater enters the reflective reflux pipe of the anaerobic reactor body from the water inlet, a built-in axial flow propeller is arranged in the anaerobic reactor body and above the reflective reflux pipe, and a built-in axial flow propeller is arranged in the anaerobic reactor body and above the built-in axial flow propeller. A three-phase separation packing bed is arranged above, and a water outlet is arranged on one side of the three-phase separation packing bed. The three-phase separation packing bed adopts bundle-shaped dense suspended packing, and the fixed sludge bed is placed above the suspended sludge bed. The wastewater rises to the three-phase separation packing bed through the reflective reflux pipe, and part of the wastewater overflows from the water outlet after the mud and water are separated by the three-phase separation packing bed, the sludge is blocked at the bottom of the three-phase separation packing bed, and the biogas escapes from the biogas outlet. Another part of the wastewater is refluxed inside the anaerobic biochemical system through the built-in axial flow propeller to fully mix the mud and water in the anaerobic reactor body.

2. The axially mixed reflux stirred anaerobic sludge blanket reactor according to claim 1, characterized in that: Observation holes are respectively arranged on one side and the top of the anaerobic reactor body.

3. An axially mixed reflux stirred anaerobic sludge blanket reactor according to claim 1 or 2, characterized in that: The other side of the anaerobic reactor body relative to the water inlet is provided with an instrument interface, a sampling port and a mud discharge port.

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