CN209853826U - Jet flow anaerobic reactor - Google Patents
Jet flow anaerobic reactor Download PDFInfo
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- CN209853826U CN209853826U CN201920574924.0U CN201920574924U CN209853826U CN 209853826 U CN209853826 U CN 209853826U CN 201920574924 U CN201920574924 U CN 201920574924U CN 209853826 U CN209853826 U CN 209853826U
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Abstract
The utility model discloses a jet flow anaerobic reactor, which comprises a box body which is internally and externally nested together, wherein the inner box body is a central precipitation separation area, the area between the inner box body and the outer box body is an anaerobic reaction area, an ejector and a matched submersible pump are arranged on the inner wall of the outer box body, a biomembrane is hung in the central precipitation separation area, a water inlet pipe enters between the inner box body and the outer box body from the outer side of the outer box body close to the bottom, and is bent upwards to extend to the area below the upper end surface of the inner box body and fixed; a water outlet groove is arranged in the inner box body and close to the upper end, and the water outlet groove is communicated with a water outlet pipe extending to the outside of the outer box body and close to the bottom surface; a mud discharging and emptying pipe communicated with the interior of the external box body is arranged on the side surface of the external box body close to the bottom; the bottom of the internal box body is provided with a rectifying plate, the lower part of the rectifying plate is supported on a conical reflecting plate, and the bottom of the conical reflecting plate is fixed on the inner bottom surface of the external box body. The reactor has the advantages of simple structure, low energy consumption, low noise, small occupied area and operation management.
Description
Technical Field
The utility model relates to a sewage treatment technology, in particular to a jet flow anaerobic reactor for treating high-concentration nitrogen-containing breeding wastewater.
Background
At present, domestic and foreign sewage anaerobic treatment equipment has a variety of types, such as a digestion tank, a UASB, an EGSB, an anaerobic bio-membrane reactor and the like. The stirring and mixing equipment mainly comprises biogas stirring, mechanical stirring, steam stirring and the like.
Chinese patent CN 208414133U discloses a co-flocculation air-floating anaerobic bioreactor. The co-flocculation air-flotation anaerobic bioreactor mainly comprises a biological reaction area, a dosing mixing area and a flocculation air-flotation area, wherein the biological reaction area is provided with a sludge discharge pipe, a three-phase separator and a lifting pipe, the dosing mixing area is provided with a medicine dissolving tank, a flow control valve and an ejector, and the flocculation air-flotation area is provided with a straight-flow vortex reaction tank, a flow reduction chamber, a slag scraper, a slag collecting groove, a flow reduction pipe and a gas collecting chamber. The main disadvantages of this patent are long process flow, complex structure, unstable operation and difficulty in achieving established treatment effect.
The Chinese patent application CN 108840432A discloses a three-dimensional spiral-flow type water distributor and application thereof, comprising a water distributor body, wherein the water distributor body is provided with double-layer flow channels, a plurality of obliquely arranged flow deflectors are arranged in each layer of flow channel, so that each layer of flow channel is in an anticlockwise spiral shape, the edge of each flow deflector is correspondingly provided with a jet orifice, and water is ejected along the corresponding tangential direction of the water distributor to form an anticlockwise spiral fluid; the first layer of flow channel is connected with the anaerobic reactor and internally circulates biogas entrained water to form rotary water distribution of the biogas entrained water, the second layer of flow channel is connected with the anaerobic reactor and feeds water to form anaerobic feed water rotary water distribution, and the biogas entrained water and the anaerobic feed water are sprayed out from the same section to increase the spraying flow and dilute the anaerobic feed water. The main disadvantages and shortcomings of this patent are: it is difficult to ensure the treatment effect because the amount of generated biogas is unstable or insufficient.
Chinese patent CN 104445605B discloses a mechanical internal circulation jet flow anaerobic reactor and a method for treating waste water by the same, belonging to the technical field of biological sewage treatment. The utility model relates to a mechanical internal circulation jet flow anaerobic reactor, which comprises a reactor tank body, a multiphase separator, a water outlet weir and an internal circulation jet flow device; the inner circulation jet device consists of an upper part and a lower part, wherein the upper part comprises a jet orifice, a diffusion orifice, a flow guide pipe and a flow stabilizing orifice; the lower part comprises a motor, a rotating shaft and a high-speed paddle; the utility model discloses a method for treating waste water by a mechanical internal circulation jet flow anaerobic reactor, which comprises the processes of formation of a fluidized bed layer, formation of a suspension bed layer, separation of a separation zone and water outlet of a water outlet weir. The main disadvantages and shortcomings of this patent are: the equipment is complex, the management is difficult, the power consumption is high, and the treatment effect cannot be stabilized.
The equipment has the problems of complex structure, high energy consumption, large occupied area, complex operation management, difficult realization of automation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art, providing a jet flow anaerobic reactor which has simple structure, low energy consumption, small occupied area and simple operation management.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a jet flow anaerobic reactor comprises a box body which is nested inside and outside, the inner box body is a central precipitation separation area, the area between the inner box body and the outer box body is an anaerobic reaction area, the inner wall of the outer box body is provided with a jet device and a matched submersible pump, a biological membrane is suspended in the central precipitation separation area through a support, and the biological membrane is vertically and parallelly suspended in the precipitation separation area. The water inlet pipe enters between the inner box body and the outer box body from the outer side of the outer box body close to the bottom, is bent upwards and extends to the area below the upper end face of the inner box body, and is fixed on the outer wall of the inner box body; a water outlet groove is arranged in the inner box body and close to the upper end, and the water outlet groove is communicated with a water outlet pipe extending to the outside of the outer box body and close to the bottom surface; a mud discharging and emptying pipe communicated with the interior of the external box body is arranged on the side surface of the external box body close to the bottom; the bottom of the internal box body is provided with a rectifying plate, the lower part of the rectifying plate is supported on a conical reflecting plate, the bottom of the conical reflecting plate is fixed on the inner bottom surface of the external box body, mixed liquid in an anaerobic reaction zone enters a precipitation zone from a gap of the conical reflecting plate, precipitated sludge directly flows back to the reaction zone from the gap, and supernatant is discharged from a top water outlet tank.
The central line of the jet device deviates from the vertical line by an angle of 3 degrees, when the submersible pump works, mixed liquid in the anaerobic reaction zone is extracted as working liquid, the working liquid is sprayed out at a high flow jet speed through the orifice of the jet device and is simultaneously sucked into the mixed liquid in the reaction zone to form liquid-liquid jet flow, the liquid-liquid jet flow is sprayed to the reaction zone through the diffusion pipe of the jet device, a 3-degree rotation angle is formed in the reaction zone, the rotational flow is downward, the rotational flow is eliminated through the conical reflecting plate and the rectifying plate at the bottom of the central precipitation separation zone, the precipitated sludge flows back to the anaerobic reaction zone, and supernatant flows through an anaerobic biomembrane in the central precipitation separation zone and is discharged from the.
The ejector and the water pump are both arranged on the inner wall of the reaction zone through a bracket.
The box body is a cylinder or a square cylinder.
The included angle between the side surface and the bottom surface of the conical reflecting plate is 62 degrees.
The water outlet groove is horizontally arranged at the top of the sedimentation zone, the top of the water outlet groove is horizontal, the bottom surface of the water outlet groove is gradually inclined from one end to the other end, and the tail end of the water outlet groove is communicated with the water outlet pipe.
The effective water depth of the jet flow anaerobic reactor is 4-5 m.
Anaerobic sludge is cultured in the anaerobic reaction zone, and the anaerobic sludge is cultured and domesticated by using bottom sludge of a methane tank or sludge of a septic tank or bottom sludge of a river channel.
In the sludge inoculation process, the fluidity and the purity of the inoculated sludge need to be ensured, and the sludge is ensured not to block the submersible pump.
The anaerobic sludge is cultured by the following steps;
1) the water content of the inoculated sludge is more than 90 percent on the principle of not wearing and blocking the stirring equipment, and the inoculum size accounts for 30 to 40 percent of the effective volume of the anaerobic reaction zone;
2) in the early stage of bacteria culture, the inflow rate of water is kept to be 25% -30% of the design flow rate, and the ejector is started to stir and mix;
3) when the COD removal rate reaches 40%, the culture is considered to be successful;
4) and continuously increasing the inflow until the design flow is reached and the water is put into normal operation.
The utility model has the advantages that:
1. the ejector has the stirring and mixing effects, and has the advantages of low energy consumption, good mixing effect, no noise, and simple equipment:
2. the jet device has the functions of cutting anaerobic activated sludge flocs and separation, accelerates the process of anaerobic reaction,
3. the reaction zone and the sedimentation zone are combined, the anaerobic activated sludge can be automatically refluxed, the energy consumption is saved,
4. the biological membrane is suspended in the sedimentation area, so that the biomass of anaerobic nitrification sludge can be increased, the anaerobic nitrification process is enhanced, and the denitrification effect is improved.
5. The reactor has the advantages of simple structure, low energy consumption, low noise, stable treatment effect, industrialized production, small occupied area, convenient operation and management and the like.
Drawings
FIG. 1 is a plan view of an anaerobic reactor of the present invention;
FIG. 2 is a sectional view taken along line A-A of the anaerobic reactor of the present invention;
FIG. 3 is a B-B sectional view of the anaerobic reactor of the present invention;
FIG. 4 is a plan view of the bottom baffle plate of the anaerobic reactor of the present invention;
FIG. 5 is a sectional view of the water outlet tank of the anaerobic reactor of the present invention;
the device comprises an ejector 1, a submersible pump 2, a water outlet groove 3, a support 4, a rectifying plate 5, a conical reflecting plate 6, an outer box 7, an inner box 8, a water inlet pipe 9, a water outlet pipe 10, a sludge discharge and blow-down pipe 11, a central sedimentation separation area 12 and an anaerobic reaction area 13.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1-5, the jet flow anaerobic reactor comprises a box body which is internally and externally nested together, the internal box body 8 is a central precipitation separation area 12, the area between the internal box body and the external box body is an anaerobic reaction area 13, the inner wall of the external box body is provided with an ejector 1 and a matched submersible pump 2 through a support 4, a biomembrane is vertically hung in the central precipitation separation area 12 through the support, a water inlet pipe 9 enters the space between the internal box body and the external box body from the outer side of the external box body 7 close to the bottom, is bent upwards to extend to the area below the upper end surface of the internal box body 8; a water outlet groove 3 is arranged in the inner box body 8 near the upper end and is communicated with a water outlet pipe 10 extending from the water outlet groove 3 to the outer box body 7 near the bottom surface; a mud discharge emptying pipe 11 communicated with the interior of the external box body 7 is arranged on the side surface of the external box body close to the bottom; the bottom of the internal box body 8 is provided with a rectifying plate 5, the lower part of the rectifying plate 5 is supported on a conical reflecting plate 6, the bottom of the conical reflecting plate 6 is fixed on the inner bottom surface of the external box body 7, the mixed liquor of the anaerobic reaction zone 13 enters a central precipitation separation zone 12 from the gap of the conical reflecting plate 6, the precipitated sludge directly flows back to the anaerobic reaction zone 13 from the gap, and the supernatant is discharged from the top water outlet tank 3. The included angle between the side surface and the bottom surface of the conical reflection plate 6 is 62 degrees. The effective water depth of the jet flow anaerobic reactor is 4-5 m.
The central line of the ejector 1 deviates from the vertical line by 3 degrees, when the submersible pump 2 works, the mixed liquid in the anaerobic reaction zone 13 is extracted as working liquid, the working liquid is ejected at high speed through the orifice of the ejector and is simultaneously sucked into the mixed liquid in the reaction zone to form liquid-liquid jet flow, the liquid-liquid jet flow is ejected through the ejector 1, a 3-degree rotation angle is formed in the reaction zone, the rotational flow is downward, the rotational flow is eliminated through the conical reflecting plate 6 and the rectifying plate 5 at the bottom of the central precipitation separation zone 12, the anaerobic mixed liquid flows upward to enter the central precipitation separation zone 12 for precipitation, the precipitated sludge flows back to the anaerobic reaction zone 13, and the supernatant flows through the anaerobic biomembrane of the central precipitation separation zone 12 and is discharged from the top water.
The water outlet groove 3 is a right-angled trapezoidal groove which is horizontally arranged, the upper end surface is horizontal, the lower end surface is gradually inclined from one end to the other end, and the tail end of the groove is communicated with the water outlet pipe 10.
Anaerobic sludge is cultured in the anaerobic reaction zone 13, and the anaerobic sludge is cultured and domesticated by using bottom sludge of a methane tank or sludge of a septic tank or bottom sludge of a river channel. In the sludge inoculation process, the fluidity and the purity of the inoculated sludge need to be ensured, and the sludge is ensured not to block the submersible pump.
The anaerobic sludge culture step is as follows;
1) the water content of the inoculated sludge is more than 90 percent on the principle of not wearing and blocking the stirring equipment, and the inoculum size accounts for 30 to 40 percent of the effective volume of the anaerobic reaction zone;
2) in the early stage of bacteria culture, the inflow rate of water is kept to be 25% -30% of the design flow rate, and the ejector is started to stir and mix;
3) when the COD removal rate reaches 40%, the culture is considered to be successful;
4) and continuously increasing the inflow until the design flow is reached and the water is put into normal operation.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (8)
1. A jet flow anaerobic reactor is characterized by comprising box bodies which are internally and externally nested together, wherein the internal box body is a central precipitation separation area, the area between the internal box body and the external box body is an anaerobic reaction area, the inner wall of the external box body is provided with a jet device and a matched submersible pump, a biological membrane is vertically suspended in the central precipitation separation area through a support, a water inlet pipe enters the space between the internal box body and the external box body from the outer side of the external box body close to the bottom, is bent upwards to extend to the area below the upper end surface of the internal box body; a water outlet groove is arranged in the inner box body and close to the upper end, and the water outlet groove is communicated with a water outlet pipe extending to the outside of the outer box body and close to the bottom surface; a mud discharging and emptying pipe communicated with the interior of the external box body is arranged on the side surface of the external box body close to the bottom; the bottom of the internal box body is provided with a rectifying plate, the lower part of the rectifying plate is supported on a conical reflecting plate, and the bottom of the conical reflecting plate is fixed on the inner bottom surface of the external box body.
2. The jet flow anaerobic reactor according to claim 1, wherein the center line of the jet device deviates from the vertical line by 3 degrees, when the submersible pump works, the mixed liquid in the anaerobic reaction zone is extracted as the working liquid, ejected at high speed through the orifice of the jet device, and simultaneously sucked into the mixed liquid in the reaction zone to form liquid-liquid jet flow, and ejected through the jet device, a 3-degree rotation angle is formed in the reaction zone, the rotational flow is downward, and is eliminated through the conical reflecting plate and the rectifying plate at the bottom of the central precipitation separation zone, so that the anaerobic mixed liquid flows upward to enter the central precipitation separation zone to be precipitated, the precipitated sludge flows back to the anaerobic reaction zone, and the supernatant flows through the anaerobic biomembrane in the central precipitation separation zone and is discharged through the top water outlet tank.
3. The jet anaerobic reactor according to claim 1, wherein the jet device and the water pump are mounted on the inner wall of the outer box body through brackets.
4. The jet anaerobic reactor according to claim 1, characterized in that the box body is a cylinder or a square cylinder.
5. The jet anaerobic reactor according to claim 1, wherein the angle between the side surface and the bottom surface of the conical reflecting plate is 62 °.
6. The jet flow anaerobic reactor according to claim 1, wherein the water outlet groove is a rectangular trapezoidal groove arranged transversely, the upper end surface is horizontal, the lower end surface is gradually inclined from one end to the other end, and the lower end is communicated with the water outlet pipe.
7. The jet anaerobic reactor according to claim 1, characterized in that the effective water depth of the jet anaerobic reactor is 4-5 meters.
8. The jet anaerobic reactor according to claim 1, characterized in that anaerobic sludge is cultivated in the anaerobic reaction zone.
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| CN201920574924.0U CN209853826U (en) | 2019-04-25 | 2019-04-25 | Jet flow anaerobic reactor |
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| CN201920574924.0U CN209853826U (en) | 2019-04-25 | 2019-04-25 | Jet flow anaerobic reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970189A (en) * | 2019-04-25 | 2019-07-05 | 海南天鸿市政设计股份有限公司 | Jet stream anaerobic reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970189A (en) * | 2019-04-25 | 2019-07-05 | 海南天鸿市政设计股份有限公司 | Jet stream anaerobic reactor |
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