CN215102266U

CN215102266U - UASB anaerobic reactor

Info

Publication number: CN215102266U
Application number: CN202120840107.2U
Authority: CN
Inventors: 王泽东; 黄晓宇; 郭永鹏
Original assignee: Shandong Mino Environmental Protection Engineering Co ltd
Current assignee: Shandong Mino Environmental Protection Engineering Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-10
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a UASB anaerobic reactor relates to sewage treatment device technical field, including the reactor casing, be provided with water inlet, delivery port, gas outlet on the reactor casing, reactor casing bottom is provided with the sludge blanket, and sludge blanket upper portion is provided with the water distribution device, and water distribution device and water inlet intercommunication are provided with the biodegradable layer above the water distribution device, are provided with the biological combination filler in the biodegradable layer, and biodegradable layer top is provided with the three-phase separator, is provided with first exhaust port and first drain port on the three-phase separator, and first exhaust port communicates the gas outlet, first drain port intercommunication delivery port. The utility model discloses a set up biological combination filler, biological combination filler makes the microorganism quantity greatly increased in the unit volume in the reactor to make the microorganism be difficult for following water loss, strike strong adaptability to the high load. Meanwhile, the biological combined filler intercepts the sludge, thereby greatly reducing the loss of anaerobic sludge.

Description

UASB anaerobic reactor

Technical Field

The utility model relates to a sewage treatment device technical field, in particular to UASB anaerobic reactor.

Background

A UASB (Up-flow Anaerobic Sludge Bed/Blanket) reactor, into the bottom of which wastewater is introduced as uniformly as possible and which passes upwards through a Sludge Bed containing granular or flocculent Sludge. The anaerobic reaction occurs during the contact of the wastewater with the sludge particles. Biogas (mainly methane and carbon dioxide) produced under anaerobic conditions causes internal circulation, which is beneficial for the formation and maintenance of granular sludge. Some of the gas formed in the sludge blanket adheres to the sludge particles, and the adhering and non-adhering gas rises toward the top of the reactor. The sludge rising to the surface strikes the bottom of the three-phase reactor, causing degassing of the sludge flocs adhering to the bubbles. After the bubbles are released, sludge particles are precipitated on the surface of a sludge bed, and gas is collected in a gas collection chamber of a three-phase separator at the top of the reactor.

The UASB system is reasonable in high-efficiency operation depending on microorganism groups, the microorganism groups are the basis of operation of the UASB reactor, but the currently used UASB reactor has serious granular sludge loss and serious microorganism group loss, so that the sewage treatment capacity is reduced, the treatment cost is increased, and the treatment efficiency is greatly reduced.

Disclosure of Invention

To above defect, the utility model aims at providing a UASB anaerobic reactor, the loss rate of anaerobic sludge is low in this UASB anaerobic reactor to improve UASB anaerobic reactor's throughput and practiced thrift the cost, the treatment effeciency uprises.

In order to realize the purpose, the technical scheme of the utility model is that:

the utility model provides a UASB anaerobic reactor, includes the reactor casing, be provided with water inlet, delivery port, gas outlet on the reactor casing, reactor casing bottom is provided with the sludge blanket, sludge blanket upper portion is provided with the water distribution device, the water distribution device with the water inlet intercommunication, water distribution device top is provided with the biodegradable layer, be provided with the biological combination filler in the biodegradable layer, biodegradable layer top is provided with the three-phase separator, be provided with first exhaust port and first drain port on the three-phase separator, first drain port intercommunication the gas outlet, first drain port intercommunication the delivery port.

The reactor shell is also provided with a backflow water suction port, part of sewage discharged from the water outlet is pumped back to the inside of the reactor through a water pump outside the backflow water suction port, a backflow main water pipe is connected inside the backflow water suction port, and the water outlet end of the backflow main water pipe extends to the bottom of the biodegradable layer.

The gas-liquid separation device comprises a gas-liquid separation tank, a first exhaust port is arranged at the top of the gas-liquid separation tank, a first water outlet is arranged at the bottom of the gas-liquid separation tank, a gas inlet is arranged at the side of the gas-liquid separation tank, the gas outlet is communicated with the gas inlet, and the first water outlet is communicated with a main backflow water pipe.

The water distribution device comprises a water inlet pipe and a water storage tank, one end of the water inlet pipe is connected with the other end of the water inlet and is connected to the water storage tank, the water storage tank is fixed to the bottom of the reactor shell, a plurality of water distribution pipes extending horizontally are arranged on the water storage tank, each water distribution pipe is provided with a plurality of water spray heads in the extending direction of the water distribution pipe, and the water outlet directions of the water spray heads face the direction of the sludge bed.

The gas inlet is provided with a plurality of gas inlets which are uniformly arranged around the circumferential direction of the gas-liquid separation tank, and the plurality of gas inlets are vertically arranged in two rows.

Wherein, the bottom of the main reflux water pipe is provided with an umbrella-shaped nozzle.

Wherein, a sampling tube is arranged above the biodegradation layer.

Wherein, still include rotatory stair and guardrail.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

because the utility model discloses UASB anaerobic reactor, including the reactor casing, be provided with water inlet, delivery port, gas outlet on the reactor casing, reactor casing bottom is provided with the sludge blanket, and sludge blanket upper portion is provided with the water distribution device, water distribution device and water inlet intercommunication, and water distribution device top is provided with the biodegradable layer, is provided with the biological combination filler in the biodegradable layer, and biodegradable layer top is provided with the three-phase separator, is provided with first exhaust port and first drain port on the three-phase separator, first exhaust port intercommunication the gas outlet, first drain port intercommunication delivery port. The utility model discloses a set up the biological combination and pack, the biological combination packs and can increase the surface area of the biomembrane that adheres to the carrier surface, makes the microorganism quantity greatly increased in the reactor in the unit volume to the microorganism that adheres to at the biological combination filler surface is difficult for following with water loss, strikes strong adaptability to the high load, and is very favorable to the slower anaerobic microorganisms of value-added rate. Meanwhile, the biological combined filler intercepts the sludge, thereby greatly reducing the loss of anaerobic sludge.

Because still be provided with the backward flow water sucking mouth on the reactor casing, inside the backward flow water sucking mouth outside was got back to the reactor with delivery port exhaust part sewage pump through the water pump, backward flow water sucking mouth internal connection has backward flow main water pipe, the play water end of backward flow main water pipe extends to biodegradable layer bottom, the play water of UASB reactor delivery port is pumped back to water intake system again through the water pump and can be improved the velocity of flow of the inside rivers of reactor, be favorable to granular sludge's formation, make water and granular sludge mix more evenly, and the reaction efficiency is improved, and can carry out the secondary reaction with the partial sewage of reaction, and the reaction effect is greatly improved. But also improves the adaptability of the UASB reactor to the water inlet temperature, pH and COD.

The gas-liquid separation device also comprises a gas-liquid separation tank, wherein a second exhaust port is arranged at the top of the gas-liquid separation tank, a second water outlet is arranged at the bottom of the gas-liquid separation tank, a gas inlet is arranged at the side part of the gas-liquid separation tank, the gas outlet is communicated with the gas inlet, and the second water outlet is communicated with a backflow main water pipe. The gas such as methane and the like discharged is separated by the gas-liquid separation tank, and the sewage is recovered.

Because water distribution device includes inlet tube, storage water tank, and inlet tube one end is connected the water inlet other end is connected on the storage water tank, and the storage water tank is fixed in reactor housing bottom, is provided with the distributive pipe that a plurality of levels stretch out on the storage water tank, is provided with a plurality of sprinkler bead on every distributive pipe along its extending direction, and the play water direction of sprinkler bead is towards the sludge blanket direction. The pressure action of the sprinkler head is utilized to ensure that the wastewater is fully contacted and transferred with the anaerobic sludge with high concentration, the sewage and the sludge are mixed more uniformly, the sewage and the sludge react more fully, and the treatment efficiency of the sewage is greatly improved. The water distribution device discharges sewage uniformly to the bottom of the UASB reactor shell, thereby effectively avoiding the phenomenon of short flow, reducing the impact on the reactor and effectively improving the stability of equipment.

Because the air inlet is provided with a plurality of, a plurality of air inlet is around gas-liquid separation jar circumference align to grid, and a plurality of air inlet sets up two rows from top to bottom, can guarantee that the gas in different regions can be quick collect in the gas-liquid separation jar, improves conveying efficiency.

Wherein biodegradable layer top is provided with the sampling tube, can carry out sample detection to the mixed liquid after the biodegradable to monitor the reaction condition.

To sum up, the utility model discloses UASB anaerobic reactor has solved the high technical problem of mud loss rate among the prior art, the utility model discloses anaerobic sludge's loss rate is low, and reaction efficiency is high.

Drawings

FIG. 1 is a schematic structural diagram of a UASB anaerobic reactor of the present invention;

in the figure: 10. the device comprises a reactor shell, 11, a water inlet, 12, a water outlet, 120, an overflow weir, 13, a gas outlet, 14, a sludge bed, 15, a biodegradable layer, 16, a three-phase separator, 17, a backflow water suction port, 18, a sampling pipe, 20, a water distribution device, 21, a water inlet pipe, 22, a water storage tank, 23, a water distribution pipe, 25, a water spray head, 31, a backflow main water pipe, 32, an umbrella-shaped nozzle, 40, a gas-liquid separation tank, 41, a second gas outlet, 42, a second water outlet, 43 and a gas inlet.

Detailed Description

The invention is further explained below with reference to the drawings and examples.

All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.

As shown in figure 1, the UASB anaerobic reactor comprises a reactor shell 10, wherein the reactor shell 10 is provided with a water inlet 11, a water outlet 12 and an air outlet 13. The water inlet 11 is arranged on the side wall of the bottom of the reactor shell 10, and the water inlet 11 is connected with a sewage pool outside the UASB anaerobic reactor through a peristaltic pump. The water outlet 12 is disposed on the top side wall of the reactor shell 10, and the water outlet 12 is connected with a reservoir (not shown) for storing sewage after the reaction of the UASB anaerobic reactor. The gas outlet 13 is provided at the top of the reactor shell 10. The bottom of the reactor shell 10 is provided with a sludge bed 14, and the sludge bed 14 is provided with granular sludge or flocculent sludge. The upper portion of the sludge bed 14 is provided with a water distribution device 20, the water distribution device 20 comprises a water inlet pipe 21 and a water storage tank 22, one end of the water inlet pipe 21 is connected with the water inlet 11, the other end of the water inlet pipe is connected to the water storage tank 22, the water storage tank 22 is fixed at the bottom of the reactor shell 10, a plurality of water distribution pipes 23 extending horizontally are arranged on the water storage tank 22, a plurality of water spray heads 25 are arranged on each water distribution pipe 23 along the extending direction of the water distribution pipe, and the water outlet direction of each water spray head 25 faces the direction of the sludge bed 14. A biodegradable layer 15 is arranged above the water distribution device 20, and a biological combined filler is arranged in the biodegradable layer 15 and used for culturing anaerobic bacteria. The biological combined filler is formed by changing a plastic wafer into a double-ring large plastic ring through pressing and buckling, and pressing the hydroformylation fibers or polyester yarns on a ring of the ring to uniformly distribute fiber bundles; the inner ring is a snowflake-shaped plastic branch, which can be used for film hanging and can effectively cut bubbles, so that water-gas biological films are fully exchanged, and organic matters in water are efficiently treated. The bio-composite filler can also adopt an elastic filler, and the embodiment does not limit the bio-composite filler. A three-phase separator 16 is arranged above the biodegradable layer 15, a first exhaust port and a first exhaust outlet are arranged on the three-phase separator 16, the first exhaust port is communicated with the air outlet 13, and the first exhaust outlet is communicated with the water outlet 12. The three-phase separator 16 is fixed to the reactor shell 10 by a frame. In order to ensure the gas collection effect, the arrangement height of the three-phase separator 16 is generally 0.1-0.9 m. The top of the three-phase separator 16 is provided with an overflow weir 120, the overflow weir 120 can ensure that the sewage can overflow evenly, and the overflow weir 120 is a tooth-shaped weir.

As shown in fig. 1, a backflow water suction port 17 is further disposed on the reactor shell 10, a part of the sewage discharged from the water outlet 12 is pumped back to the inside of the reactor through a water pump outside the backflow water suction port 17, a backflow main water pipe 31 is connected inside the backflow water suction port 17, and a water outlet end of the backflow main water pipe 31 extends to the bottom of the biodegradable layer 15. The bottom of the return main water pipe 31 is provided with an umbrella-shaped nozzle 32. The reflux water suction port 17 pumps the sewage of the water storage tank after sedimentation back to the interior of the reactor, and the reflux ratio is set to be 10: 1. a suspension beam is provided between the return main water pipe 31 and the frame of the three-phase separator 16, which may increase the stability of the return main water pipe 31.

As shown in fig. 1, the UASB anaerobic reactor further comprises a gas-liquid separation tank 40, wherein a second exhaust port 41 is disposed at the top of the gas-liquid separation tank 40, a second water discharge port 42 is disposed at the bottom, a gas inlet 43 is disposed at the side, and the gas outlet 13 is communicated with the gas inlet 43. The second exhaust port 41 is positioned at the top of the gas-liquid separation tank 40 and is connected with a gas storage cylinder, and the gas storage cylinder is used for collecting reaction methane; the plurality of air inlets 43 are uniformly arranged around the circumference of the gas-liquid separation tank 40, two rows of the plurality of air inlets 43 are arranged up and down, preferably, four air inlets 43 are arranged on the upper row, and two air inlets 43 are arranged on the lower row. The reactor shell 10 is also provided with a plurality of air outlets 13, and the air outlets 13 are uniformly arranged on the upper surface of the reactor shell 10 and are respectively connected with the air inlets 43. The second drain port 42 communicates with the return main water pipe 31.

As shown in FIG. 1, a sampling tube 18 is arranged above the biodegradable layer, the sampling tube 18 is communicated with the outside, and a manual valve is arranged on the sampling tube 18, so that sewage above the biodegradable layer can be taken out for detection by opening the manual valve.

As shown in figure 1, a thermometer is arranged in the biodegradable layer 15, the thermometer is communicated with the biodegradable layer 15 and the outside, and the thermometer can carry out remote transmission so as to conveniently detect the reaction temperature in the UASB anaerobic reactor at any time. The side wall of the bottom of the reactor shell 10 is provided with a manhole, and the UASB anaerobic reactor is also provided with a rotary ladder stand and a top guardrail.

As shown in figure 1, the work flow of the UASB anaerobic reactor of the utility model is as follows:

in the first step, sewage is lifted by a water pump and enters the water distribution device 20 from the water inlet 11, and the water distribution device 20 distributes the sewage uniformly to the sludge bed 14.

And secondly, uniformly distributing the sewage on a sludge bed 14 of the UASB anaerobic reactor, fully contacting and reacting organic substances in the sewage with anaerobic bacteria in the sludge, and rising methane generated after reaction and part of sludge particles carried by the methane.

And thirdly, the sewage continuously rises, the sewage passes through the biodegradable layer 15, the sewage reacts with anaerobic bacteria in the biodegradable layer 15, a large amount of methane is continuously generated, and part of sludge particles carried by the methane are blocked by the biodegradable layer 15 and fall back to the sludge bed 14.

Fourthly, the sludge particles are separated from the ascending biogas through a three-phase separator 16, and the separated sludge particles slide downwards; the separated liquid is discharged from the water outlet 12 to the reservoir through the overflow weir 120; the biogas discharged from the three-phase separator 16 enters a gas-liquid separation tank 40 through a gas outlet 13 for separation.

And fifthly, returning part of the sewage in the water storage tank to the interior of the UASB anaerobic reactor again through a water pump, and entering the bottom of the biodegradable layer 15 through a backflow water suction port 17.

The utility model discloses UASB anaerobic reactor mud loss rate is low, and reaction effect is good, and sewage treatment efficiency is high.

The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.

Claims

1. The utility model provides a UASB anaerobic reactor, includes the reactor casing, be provided with water inlet, delivery port, gas outlet on the reactor casing, its characterized in that, reactor casing bottom is provided with the sludge blanket, sludge blanket upper portion is provided with the water distribution device, the water distribution device with the water inlet intercommunication, water distribution device top is provided with the biodegradable layer, be provided with the biological combination filler in the biodegradable layer, biodegradable layer top is provided with the three-phase separator, be provided with first exhaust port and first drain port on the three-phase separator, first exhaust port intercommunication the gas outlet, first drain port intercommunication the delivery port.

2. The UASB anaerobic reactor according to claim 1, wherein the reactor housing is further provided with a return water inlet, the outside of the return water inlet pumps part of the sewage discharged from the water outlet back to the inside of the reactor via a water pump, the inside of the return water inlet is connected with a return main water pipe, and the water outlet end of the return main water pipe extends to the bottom of the biodegradable layer.

3. A UASB anaerobic reactor according to claim 2, further comprising a gas-liquid separation tank, wherein the gas-liquid separation tank is provided with a second gas outlet at the top, a second water outlet at the bottom, a gas inlet at the side, the gas outlet connected to the gas inlet, and the second water outlet connected to the main return water pipe.

4. A UASB anaerobic reactor according to claim 1, characterized in that the water distribution device comprises an inlet pipe, a water storage tank, one end of the inlet pipe is connected with the other end of the water inlet and is connected with the water storage tank, the water storage tank is fixed at the bottom of the reactor shell, a plurality of water dividing pipes extending horizontally are arranged on the water storage tank, each water dividing pipe is provided with a plurality of water spray heads along the extending direction thereof, and the water outlet direction of the water spray heads faces the sludge bed direction.

5. A UASB anaerobic reactor according to claim 3, wherein the gas inlet is provided in a plurality of rows, the gas inlets are arranged circumferentially and uniformly around the gas-liquid separation tank.

6. A UASB anaerobic reactor according to claim 3, wherein the bottom of the return main water pipe is provided with umbrella shaped jets.

7. A UASB anaerobic reactor according to claim 1, wherein sampling tubes are provided above the biodegradable layer.

8. A UASB anaerobic reactor according to claim 1, further comprising spiral stairs and guardrails.