CN209853831U - Jet membrane method internal circulation reactor - Google Patents
Jet membrane method internal circulation reactor Download PDFInfo
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- CN209853831U CN209853831U CN201920574916.6U CN201920574916U CN209853831U CN 209853831 U CN209853831 U CN 209853831U CN 201920574916 U CN201920574916 U CN 201920574916U CN 209853831 U CN209853831 U CN 209853831U
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Abstract
The utility model discloses a jet membrane internal circulation reactor, which comprises an embedded inner shell and an outer shell, wherein the upper end and the lower end of the inner shell are respectively fixed on the upper end surface and the lower end surface of the outer shell, a settling zone is arranged in the inner shell, and a cavity outside the inner shell is a biological reaction zone; the external biological reaction zone is sequentially an anaerobic zone, an aerobic zone and an anoxic zone, wherein an ejector and a matched submersible pump are arranged in the aerobic zone, a flow impeller is arranged at the initial end of the anoxic zone, a reactor water outlet is arranged at the tail end of the aerobic zone, and a water inlet pipe is arranged at the initial end of the anaerobic zone; the inner shell corresponding to the tail end of the aerobic area is provided with a flashboard, a first overflow groove corresponding to the flashboard is arranged in the inner shell, a first baffle is arranged outside the first overflow groove, and the middle of the bottom of the inner shell is provided with a sludge discharge pipe extending to the outside of the outer shell; the tail end of the water flow in the inner shell is sequentially provided with a second baffle plate and a second overflow groove, and the second overflow groove is communicated with a water outlet pipe extending to the outside of the outer shell. Simple equipment, low cost, simple and convenient operation management and stable treatment effect.
Description
Technical Field
The utility model relates to a technology for treating urban domestic sewage, in particular to a jet flow membrane method internal circulation reactor.
Background
At present, the technology for treating urban sewage in China has the problems of complex equipment, more power consumption, large occupied area, long construction period, difficult operation, management and maintenance and the like.
Chinese patent CN100544808C discloses a method and a device of a jet membrane-bioreactor, which pressurize a part of sludge mixed liquor by a water pump and then enter a pipeline, high-speed water flow formed by a nozzle of a jet device sucks surrounding air, a part of air is dissolved into the mixed liquor by mixing and cutting action to form a gas-liquid jet flow, and the sludge mixed liquor is oxygenated by a diffusion gas distribution plate and a membrane component is washed; meanwhile, the gas-liquid mixed flow drives the sludge mixed liquid in the reactor to form internal circulation in the reactor. The patent mainly aims to pressurize partial sludge and suck air after being sprayed by a jet device, and the method has the main defects that: 1. the electricity consumption is large; 2. the mass transfer between sewage and sludge air is insufficient, and the treatment effect is poor; 3. insufficient oxygen supply; 4. the internal circulation amount and the reflux ratio are small.
The Chinese patent application CN 105800874A urban domestic sewage and garbage integrated and circulating centralized treatment system comprises an organic garbage collecting tank, a crushing device, a water collecting tank, a pretreatment tank, a regulating and heating tank, an IC anaerobic reactor, an anaerobic tank, an I-level aerobic reaction tank, a II-level aerobic reaction tank, a sedimentation tank and membrane treatment equipment which are sequentially connected, the IC anaerobic reactor comprises a tank body, the tank body is composed of a first reaction chamber and a second reaction chamber which are sequentially connected from bottom to top, a jet flow aeration stirrer is arranged between the first reaction chamber and the second reaction chamber, a bottom sludge discharge pipe is arranged at the bottom of the IC anaerobic reactor, the bottom is provided with inlet pipe and stirring turbine in the first reaction chamber, stirring turbine sets up the top at the inlet pipe, set up inner loop back flow and inner loop rising-flow tube in the second reaction chamber side by side. The main disadvantages of this patent are that the height of the cylinder is high (up to about 7 m), the structure is complex, the power consumption is large, the management is inconvenient, and the internal circulation can not be realized when the sewage concentration is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned prior art, provide a circulation reactor in efflux embrane method, equipment is simple, but the industrialization preparation, low cost, degree of automation is higher, and the operation management is simple and convenient, and the treatment effect is stable, and can reach the purpose of biological nitrogen and phosphorus removal simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a jet membrane method internal circulation reactor comprises an outer shell, wherein an inner shell with a shape similar to that of the side edge of the outer shell is embedded in the outer shell, the upper end surface and the lower end surface of the side edge of the inner shell are fixedly sealed on the upper end surface and the lower end surface of the outer shell respectively, the inner shell divides a cavity of the outer shell into an inner part and an outer part which are independent, the cavity in the inner shell is a settling zone, the cavity outside the inner shell is a biological reaction zone, and the biological reaction zone surrounds the periphery;
the biological reaction zone is sequentially divided into an anaerobic zone, an aerobic zone and an anoxic zone, wherein an ejector and a matched submersible pump are arranged in the aerobic zone, a flow impeller is arranged at the corner of the biological reaction zone, namely the initial end of the anoxic zone, the tail end of the aerobic zone is provided with a reactor water outlet communicated with the sedimentation zone, and the initial end of the anaerobic zone is provided with a water inlet pipe;
a flashboard capable of communicating the inner cavity and the outer cavity is arranged on the upper half part of the inner shell at the water outlet of the reactor at the tail end of the aerobic zone, a first overflow groove is arranged in the inner shell corresponding to the flashboard, a vertical first baffle is arranged outside the first overflow groove along the water flow direction, and a sludge discharge pipe extending to the outside of the outer shell is arranged in the middle of the bottom of the inner shell; the tail end of the water flow in the inner shell is sequentially provided with a second baffle plate and a second overflow groove, and the second overflow groove is communicated with a water outlet pipe extending to the outside of the outer shell.
The tail end of the water inlet pipe is obliquely arranged downwards, and the tail end of the water inlet pipe is used as the auxiliary of sewage internal circulation power by means of water inlet power.
And a clamping groove for fixing and limiting the flashboard is arranged on the outer wall of the inner shell.
The gate plate is connected with a screw rod extending to the outside of the shell and used for lifting the gate plate.
The second baffle is vertically arranged.
The bottom of the inner shell is in a shape that the middle is low and the two sides are high, so that sludge can be uniformly discharged from the sludge discharge pipe conveniently.
A plurality of biological ropes which are arranged in parallel along the water flow direction are uniformly suspended in the aerobic zone and the anoxic zone.
Sewage in the anaerobic zone, the aerobic zone and the anoxic zone is repeatedly subjected to internal circulation, and the effective volume ratio of the aerobic zone to the anoxic zone to the anaerobic zone is as follows: 3:2: 1; the average concentration of the mixed liquid suspended solids in the biological reaction zone is 3.5g/L, the hydraulic retention time of the biological reaction zone is 8.17h, and the hydraulic retention time of the precipitation zone is 1.75 h.
The jet speed of the jet device reaches 0.05m/s, the jet range can reach 3m, and the flow velocity required by the internal circulation of the reactor is met. The ejector air inlet pipe extends to the outside of the shell, and the ejector is fixed in the shell through the ejector bracket. The sewage is pushed to advance along the internal circulation, the dissolved oxygen is continuously consumed by microorganisms to be reduced to be anoxic or even anaerobic, and the aerobic carbonization and ammoniation reaction processes, the facultative nitrification process and the anaerobic denitrification process are completed.
The utility model has the advantages that:
1. the reactor is divided into 3 areas of aerobic, anoxic and anaerobic, and the 3 areas breed respective dominant strains, so that the operation and the treatment effect can be kept stable;
2. water is discharged from the tail end of the aerobic zone, so that the purpose of biological phosphorus removal is achieved, and no additional phosphorus removal agent or less phosphorus removal agent is needed, so that the process flow is shortened; water is fed at the initial end of the anaerobic zone, so that sufficient carbon sources can be provided for the anaerobic zone, and the denitrification effect is improved;
3. the carbonization, ammoniation, nitrification and denitrification processes are enhanced by repeatedly carrying out internal circulation, oxidation, ammoniation, nitrification and denitrification, so that the treatment effect is improved;
4. the reflux ratio can reach more than 20 times, and the impact load resistance is strong;
5. the jet aerator is used as the oxygenation equipment and the internal circulation power, the equipment is simple, the energy consumption is low, and the automatic operation and management are convenient;
6. the device has simple structure, convenient manufacture, low cost of industrialized production and no need of arranging DO probes and the like;
7. by utilizing the hanging biological membrane, the dominant strains and biomass in each area are increased, and the treatment effect is ensured;
8. automatic operation can be realized, only regular detection is needed, and management by a specially-assigned person is not needed;
9. the jet aerator is horizontally arranged, so that the biochemical function is fully exerted and the internal circulation promotion is provided;
10. the unit bodies of the equipment can be used for assembling sewage treatment plants with different scales so as to meet the requirements of village and town cities with different scales.
Drawings
Fig. 1 is a top plan view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 4 is a plan view of the bio-cord arrangement of the present invention;
fig. 5 is a cross-sectional view of fig. 4 in accordance with the present invention;
the device comprises a water inlet pipe 1, a jet aerator 2, a submersible pump 3, a flow impeller 4, a gate 5, a first overflow groove 6, a first baffle 7, a water outlet pipe 8, a sludge discharge pipe 9, a screw rod 10, a clamping groove 11, a jet aerator air inlet pipe 12, a jet aerator fixing support 13, a biological rope 14, an outer shell 15, an inner shell 16, a second water baffle 17, a second overflow groove 18, an anaerobic zone I, an aerobic zone II, an anoxic zone III and a settling zone IV.
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.
The arrow in the attached drawings of the utility model is the water flow direction.
As shown in fig. 1-5, the jet membrane internal circulation reactor includes an outer shell 15, an inner shell 16 having a similar shape to the side of the outer shell 15 is embedded in the outer shell 15, the upper and lower ends of the side of the inner shell 16 are respectively fixed and sealed on the upper and lower end surfaces of the outer shell 15, the inner shell 16 divides the cavity of the outer shell 15 into two independent parts, the cavity in the inner shell 16 is a settling zone IV, the cavity outside the inner shell is a biological reaction zone, and the biological reaction zone surrounds the outer side surface of the inner shell 16;
the biological reaction zone is sequentially divided into an anaerobic zone I, an aerobic zone II and an anoxic zone III, an ejector 2 and a matched submersible pump 3 are arranged in the aerobic zone II, and a flow impeller 4 is arranged at the corner of the biological reaction zone, namely the initial end of the anoxic zone III, and plays a role in pushing flow. The tail end of the aerobic zone II is provided with a reactor water outlet communicated with the sedimentation zone so as to ensure that PO is absorbed sufficiently4 3-The activated sludge enters a settling zone IV for settling, and the purpose of removing phosphorus is achieved. The first end of anaerobic zone I is provided with inlet tube 1, and the effect has two: the method comprises the steps of taking power of water inlet as auxiliary power of internal circulation of a reaction zone; the COD of the raw sewage entering the device is higher, and the device can be used as a carbon source and an electron donor for anaerobic denitrification to achieve the aim of denitrification. The tail end of the water inlet pipe 1 is obliquely arranged downwards, and the tail end of the water inlet pipe is used as the auxiliary of the sewage internal circulation power by means of the water inlet power.
The upper half part of the inner shell 16 corresponding to the water outlet of the reactor at the tail end of the aerobic zone II is provided with a flashboard 5 which can be communicated with the inner cavity and the outer cavity, and the outer wall of the inner shell 16 is provided with a clamping groove 11 which is used for fixing and limiting the flashboard 5. The shutter 5 is connected to a screw 10 extending to the outside of the housing 15, and the screw 10 is used to control the elevation of the shutter 5 so that the amount of sludge flowing out of the biological reaction zone is substantially equal to the amount of excess sludge produced.
A first overflow groove 6 is arranged in the inner shell corresponding to the flashboard 5, a vertical first baffle 7 is arranged outside the first overflow groove 6 along the water flow direction, and a sludge discharge pipe 9 extending to the outside of the outer shell 15 is arranged in the middle of the bottom of the inner shell 16; the bottom of the inner shell 16 is in a shape that the middle is low and the two sides are high, so that sludge can be uniformly discharged from the sludge discharge pipe 9.
A vertical second baffle 17 and a second overflow trough 18 are sequentially arranged at the tail end of the water flow in the inner shell 16, and the second overflow trough 18 is communicated with the water outlet pipe 8 extending to the outside of the outer shell 15.
In order to stabilize the treatment effect of the equipment, a plurality of biological ropes 14 which are arranged in parallel along the water flow direction are uniformly hung in the aerobic zone II and the anoxic zone III, so that the dominant microorganisms in each zone are fixed, and the biomass in each zone is increased.
Repeatedly carrying out internal circulation on sewage in the anaerobic zone I, the aerobic zone II and the anoxic zone III, wherein the effective volume ratio of the anaerobic zone I to the aerobic zone II to the anoxic zone III is as follows: 3:2: 1; the average concentration of the mixed liquid suspended solids in the biological reaction zone is 3.5g/L, the hydraulic retention time of the biological reaction zone is 8.17h, and the hydraulic retention time of the precipitation zone IV is 1.75 h.
The jet speed of the jet device 2 reaches 0.05m/s, the jet range can reach 3m, and the flow velocity required by the internal circulation of the reactor is met. The ejector air inlet pipe 12 extends to the outside of the shell 15, and the ejector 2 is fixed in the shell 15 through the ejector bracket 13. The sewage is pushed to advance along the internal circulation, the dissolved oxygen is continuously consumed by microorganisms to be reduced to be anoxic or even anaerobic, and the aerobic carbonization and ammoniation reaction processes, the facultative nitrification process and the anaerobic denitrification process are completed.
A method for treating sewage by using a jet membrane method internal circulation reactor, comprising:
1) sewage gets into anaerobic zone I from inlet tube 1, and the angle of inlet tube 1 sets up to the slope, with the help of the power of intaking, as the supplementary of sewage inner loop power, gets into ejector 2 under immersible pump 3's suction afterwards, at the inside air water mixture of ejector 2, jets out from the ejector export, not only makes the dissolved oxygen concentration increase in the water, can also provide huge power for the sewage inner loop. The average concentration of the mixed liquid suspended solids in the biological reaction zone is 3.5g/L, and the hydraulic retention time of the biological reaction zone is 8.17 h.
After passing through the aerobic zone II, the sewage enters the first overflow trough 6 from the gate plate 5 of the inner shell 16, the lifting height of the gate plate 5 is determined according to the amount of excess sludge, the height of the gate plate 5 is controlled according to the amount of the sludge to be discharged, the gate plate 5 is lifted if less excess sludge is produced, the upper water of the biological reaction zone is discharged, and the height of the gate plate is reduced if more excess sludge is produced, so that the water discharged from the biological reaction zone contains suspended sludge with higher concentration;
2) the water from the first overflow groove 6 flows downwards to bypass the first baffle 7, the first baffle 7 performs rectification and uniformly distributes water in the depth direction, the hydraulic retention time in the sedimentation region IV is 1.75h, sludge in the sewage is precipitated at the bottom, a certain gradient is arranged on two sides of the bottom of the sedimentation region IV, and the sludge is uniformly discharged from the sedimentation region IV through the sludge discharge pipe 9;
3) the clear water which is completely precipitated passes through the second baffle 17 and is discharged out of the device from the second overflow launder 18 through the water outlet pipe 8.
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 (10)
1. A jet membrane method internal circulation reactor is characterized by comprising an outer shell, wherein an inner shell with the shape similar to that of the side edge of the outer shell is embedded in the outer shell, the upper end surface and the lower end surface of the side edge of the inner shell are fixedly sealed on the upper end surface and the lower end surface of the outer shell respectively, the inner shell divides a cavity of the outer shell into an inner part and an outer part which are independent, the cavity in the inner shell is a precipitation zone, the cavity outside the inner shell is a biological reaction zone, and the biological reaction zone surrounds the;
the biological reaction zone is sequentially divided into an anaerobic zone, an aerobic zone and an anoxic zone, wherein an ejector and a matched submersible pump are arranged in the aerobic zone, a flow impeller is arranged at the corner of the biological reaction zone, namely the initial end of the anoxic zone, the tail end of the aerobic zone is provided with a reactor water outlet communicated with the sedimentation zone, and the initial end of the anaerobic zone is provided with a water inlet pipe;
a flashboard capable of communicating the inner cavity and the outer cavity is arranged on the upper half part of the inner shell at the water outlet of the reactor at the tail end of the aerobic zone, a first overflow groove is arranged in the inner shell corresponding to the flashboard, a vertical first baffle is arranged outside the first overflow groove along the water flow direction, and a sludge discharge pipe extending to the outside of the outer shell is arranged in the middle of the bottom of the inner shell; the tail end of the water flow in the inner shell is sequentially provided with a second baffle plate and a second overflow groove, and the second overflow groove is communicated with a water outlet pipe extending to the outside of the outer shell.
2. The reactor as claimed in claim 1, wherein the end of the inlet pipe is inclined downward, and the power of the inlet water is used as an auxiliary power for the internal circulation of the sewage.
3. The reactor as claimed in claim 1, wherein a groove for fixing and limiting the flashboard is provided on the outer wall of the inner shell.
4. The reactor for circulating in a jet membrane process as claimed in claim 1, wherein the shutter is connected to a screw extending to the outside of the housing for elevating and lowering the shutter.
5. The reactor for circulating in a jet membrane process as claimed in claim 1, wherein the second baffle is vertically disposed.
6. The reactor as claimed in claim 1, wherein the bottom of the inner shell is formed in a shape of low middle and high sides, so that sludge can be uniformly discharged from the sludge discharge pipe.
7. The reactor as claimed in claim 1, wherein a plurality of biological ropes arranged in parallel in the water flow direction are uniformly suspended in the aerobic zone and the anoxic zone.
8. The reactor as claimed in claim 1, wherein the sewage in the anaerobic zone, the aerobic zone and the anoxic zone is repeatedly circulated, and the effective volume ratio of the aerobic zone, the anoxic zone and the anaerobic zone is: 3:2: 1; the average concentration of the mixed liquid suspended solids in the biological reaction zone is 3.5g/L, the hydraulic retention time of the biological reaction zone is 8.17h, and the hydraulic retention time of the precipitation zone is 1.75 h.
9. The reactor for circulating in a jet membrane process as claimed in claim 1, wherein the jet velocity of the jet means is 0.05m/s, the jet range is 3m, and the inlet pipe of the jet means extends to the outside of the housing.
10. The jet membrane-method internal circulation reactor according to claim 1, wherein the jet device is fixed in the housing by a jet device holder.
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| CN201920574916.6U CN209853831U (en) | 2019-04-25 | 2019-04-25 | Jet membrane method internal circulation reactor |
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| CN201920574916.6U CN209853831U (en) | 2019-04-25 | 2019-04-25 | Jet membrane method internal circulation reactor |
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| CN209853831U true CN209853831U (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970197A (en) * | 2019-04-25 | 2019-07-05 | 海南天鸿市政设计股份有限公司 | Jet stream embrane method inner circulation reactor and its sewage water treatment method |
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- 2019-04-25 CN CN201920574916.6U patent/CN209853831U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970197A (en) * | 2019-04-25 | 2019-07-05 | 海南天鸿市政设计股份有限公司 | Jet stream embrane method inner circulation reactor and its sewage water treatment method |
| CN109970197B (en) * | 2019-04-25 | 2024-02-23 | 海南天鸿市政设计股份有限公司 | Internal circulation reactor by jet membrane method and sewage treatment method thereof |
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