CN218507636U - UASB anaerobic reactor for landfill leachate treatment - Google Patents

Abstract

The utility model relates to a waste water treatment technical field specifically provides a landfill leachate handles uses UASB anaerobic reactor, include: the system comprises a reactor tower body, an anaerobic intermediate sedimentation tank, a sludge circulating pump and a middle sedimentation tank guide cylinder; the lower part of reactor tower body is provided with the anaerobism inlet channel, is provided with in the reactor tower body: the reactor comprises a submersible mixer, a three-phase separator, a plurality of second water collecting tanks and a methane collecting pipeline, wherein the submersible mixers are arranged at the bottom of a reactor tower body, and the second water collecting tanks are arranged at the top of the three-phase separator; the top of the anaerobic intermediate sedimentation tank is provided with a first water collecting tank, and the first water collecting tank is connected with a water outlet pipe; the sludge circulating pump is provided with a sewage circulating pump water inlet pipe and a sewage circulating pump water outlet pipe. The utility model discloses the system is stable, difficult jam, impact load capacity is strong, moreover invest in for a short time, the running cost is low, area is little.

Description

UASB anaerobic reactor for landfill leachate treatment

Technical Field

The utility model relates to a waste water treatment technical field especially relates to a landfill leachate handles and uses UASB anaerobic reactor.

Background

The UASB anaerobic reactor is widely applied to the landfill leachate treatment, has the characteristics of simple structure, high load, wide applicability and the like, and can effectively treat refractory organic matters in high-concentration organic wastewater. In practical engineering application, medium-temperature anaerobic treatment is mostly adopted at 30-35 ℃, and the solubility of water scale in water is reduced along with the increase of temperature, so that the problems of serious blockage of a water distribution pipeline and difficult cleaning of a medium-temperature UASB anaerobic reactor generally exist, and when the load is higher, the separation of sludge and gas is difficult, the sludge loss is easy to occur, the increase of the sludge load is limited, and the phenomenon of water quality deterioration is caused. In addition, certain landfill leachate contains a large amount of SS particles, high-concentration scale ions and high-molecular organic pollutants, and the substances can also cause different degrees of influence on pipelines, anaerobic systems and the like during anaerobic treatment, such as pipeline blockage, uneven water distribution, poor effluent quality of the anaerobic systems and even system failure. In order to solve the problems, the conventional UASB anaerobic reactor for treating the landfill leachate is urgently needed to be improved.

SUMMERY OF THE UTILITY MODEL

For solving the defects of the prior art, the utility model provides a UASB anaerobic reactor for treating landfill leachate.

The technical scheme of the utility model is realized like this:

a UASB anaerobic reactor for landfill leachate treatment, includes: a reactor tower body, an anaerobic intermediate sedimentation tank, a sludge circulating pump and a sedimentation tank guide cylinder;

the lower part of reactor tower body is provided with the anaerobism inlet channel, is provided with in the reactor tower body: the system comprises a submersible stirrer, a three-phase separator, a second water collecting tank and a methane collecting pipeline; the number of the submersible mixers is a plurality, and the submersible mixers are all arranged at the bottom of the reactor tower body; the second water collecting tank is arranged at the top of the three-phase separation, and a plurality of second overflow weirs are arranged on the second water collecting tank;

the top of the anaerobic intermediate sedimentation tank is provided with a first water collecting tank, the first water collecting tank is provided with a plurality of first overflow weirs, and the first water collecting tank is connected with a water outlet pipe;

a sewage circulating pump water inlet pipe and a sewage circulating pump water outlet pipe are arranged on the sludge circulating pump;

the second water collecting tank is connected with an anaerobic intermediate sedimentation tank through a middle sedimentation guide cylinder, the anaerobic intermediate sedimentation tank is connected with a sludge circulating pump through a sewage circulating pump water inlet pipe, and the sludge circulating pump is connected with the bottom of the reactor tower body through a sewage circulating pump water outlet pipe.

Preferably, the reactor tower body is of a square structure, two parallel treatment areas are formed after the square structure is separated, a pair of submersible mixers is arranged in each treatment area in a diagonal manner, the number of the water outlets of the anaerobic water inlet pipeline is two, and the two water outlets are respectively positioned above the two submersible mixers adjacent to the two treatment areas.

Further preferably, the methane collection pipeline is in a T-shaped structure, and a plurality of equal-height gas collection branch pipes are distributed on the methane collection pipeline.

More preferably, the gas collecting branch pipe is provided with a positive and negative pressure protector.

Most preferably, the bottom of the reactor tower is provided with a manhole.

Compared with the prior art, the utility model discloses the system is stable, the water distribution is difficult for blockking up, impact load resistance can the reinforce, invests in moreover for a short time, the running cost is low, area is little, can satisfy landfill leachate's anaerobic treatment, still is fit for being used for the anaerobic treatment of high concentration biological difficult degradation waste water.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a top view of the present invention.

In the figure:

1. a reactor column; 2. an anaerobic intermediate sedimentation tank; 3. a sludge circulating pump; 4. a submersible mixer; 5. a three-phase separator; 6. a flow guide cylinder of the intermediate sedimentation tank; 7. an anaerobic water inlet pipeline; 8. a water outlet pipeline; 9. a water inlet pipe of a sewage circulating pump; 10. a water outlet pipe of the sewage circulating pump; 11. a first water collection tank; 12. a first overflow weir; 13. a manhole; 14. a positive and negative voltage protector; 15. a biogas collection pipeline; 16. a second water collection tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1:

a UASB anaerobic reactor for landfill leachate treatment, includes: a reactor tower body 1, an anaerobic intermediate sedimentation tank 2, a sludge circulating pump 3 and a sedimentation tank draft tube 6;

the lower part of reactor tower body 1 is provided with anaerobism inlet channel 7, is provided with in the reactor tower body 1: a submersible mixer 4, a three-phase separator 5, a second water collecting tank 16 and a methane collecting pipeline 15; a plurality of submersible stirrers 4 are arranged at the bottom of the reactor tower body 1; the second water collecting tank 16 is arranged at the top of the three-phase separation 5, and a plurality of second overflow weirs are arranged on the second water collecting tank 16;

a first water collecting tank 11 is arranged at the top of the anaerobic intermediate sedimentation tank 2, a plurality of first overflow weirs 12 are arranged on the first water collecting tank 11, and a water outlet pipeline 8 is connected to the first water collecting tank 11;

a sewage circulating pump water inlet pipe 9 and a sewage circulating pump water outlet pipe 10 are arranged on the sludge circulating pump 3;

the second water collecting tank 16 is connected with the anaerobic intermediate sedimentation tank 2 through the intermediate sedimentation guide cylinder 6, the anaerobic intermediate sedimentation tank 2 is connected with the sludge circulating pump 3 through the sewage circulating pump water inlet pipe 9, and the sludge circulating pump 3 is connected with the bottom of the reactor tower body 1 through the sewage circulating pump water outlet pipe 10.

The working principle is as follows: garbage leachate to be treated enters the lower part of a reactor tower body 1 from an anaerobic water inlet pipe 367387, is acted on the bottom of the reactor tower body 1 through a submersible stirrer 4 arranged at the bottom of the reactor tower body 1 to stably and uniformly distribute water, and then carries sludge to move upwards, a gas-liquid-solid mixture containing methane is generated in the process, the mixture meets a three-phase separator 5 to cause gas-solid-liquid three-phase separation, the solid sinks, the methane is collected by a methane collection pipeline 15 and is discharged to a subsequent methane treatment system, supernatant liquid is collected into a second water collecting tank 16 through a second overflow weir and then enters an anaerobic intermediate sedimentation tank 2 through a middle sedimentation guide cylinder 6 for further sedimentation treatment, the further-precipitated supernatant liquid enters a first water collecting tank 11 through a first overflow weir 12 and is discharged through a water outlet pipeline 8, and the precipitated sludge enters a sludge circulating pump 3 through a sewage circulating pump water inlet pipe 9 and flows back to the reactor tower body 1 through a sewage circulating pump water outlet pipe 10.

The utility model solves the problems of serious blockage and difficult cleaning of the water inlet distribution pipeline in the traditional multi-point water distribution by arranging the submersible stirrer along the diagonal angle in the reactor tower body; by additionally arranging the anaerobic intermediate sedimentation tank, the problems that water is carried out during the high-concentration wastewater treatment of the percolate, and the water inlet load cannot be increased are solved; the combined action of the two improves the stability and the impact load resistance of the whole system, the water distribution is uniform, the pipeline is not easy to block, and the water outlet quality is good.

As a preferred technical solution, in another embodiment of the present invention, the reactor tower body 1 is a square structure, the square structure is divided to form two parallel processing areas, and a pair of submersible mixers 4 is arranged diagonally in each processing area; particularly, the juncture of two treatment areas is equipped with the mixer mounting hole, the play water end of sewage circulating pump outlet pipe 10 is located this mixer mounting hole and flows back the mud that mud circulating pump 3 produced to the bottom of reactor tower body 1, the delivery port of anaerobism inlet channel 7 stretches into the bottom of reactor tower body 1 and is located the top of two adjacent dive mixers 4 of two treatment areas respectively, carry the sewage in reactor tower body 1 through anaerobism inlet channel 7 evenly distributed under the relative stirring by two dive mixers 4 of diagonal angle setting.

As a preferred technical scheme, the utility model discloses a further embodiment, marsh gas collection pipeline 15 is "T" style of calligraphy structure, and the gas collection branch pipe such as a plurality of heights of having arranged on marsh gas collection pipeline 15 is convenient for collect marsh gas everywhere in step to improve collection efficiency.

As a preferred technical scheme, the utility model discloses a further embodiment is provided with positive negative pressure protector 14 on the gas collection branch pipe, and positive negative pressure protector 14 plays positive negative pressure guard action to marsh gas collecting line 15, and balanced internal and external pressure avoids taking place the incident.

In order to facilitate the staff to get into maintenance or cleaning operation in the reactor tower body 1, as an optimal technical scheme, the utility model discloses a further embodiment, reactor tower body 1 bottom is provided with manhole 13.

The above description is only for the preferred embodiment of the present invention, and all the directional terms such as "left" and "right" used herein are used for convenience of illustration, and are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above-mentioned structures or their connection relations, which are not described in detail, adopt the prior art.

Claims (5)

1. The utility model provides a landfill leachate handles uses UASB anaerobic reactor which characterized in that: the method comprises the following steps: a reactor tower body (1), an anaerobic intermediate sedimentation tank (2), a sludge circulating pump (3) and a middle sedimentation tank guide cylinder (6);

the lower part of reactor tower body (1) is provided with anaerobism water intake pipe (7), is provided with in the reactor tower body (1): the system comprises a submersible mixer (4), a three-phase separator (5), a second water collecting tank (16) and a methane collecting pipeline (15); a plurality of submersible mixers (4) are arranged at the bottom of the reactor tower body (1); the second water collecting tank (16) is arranged at the top of the three-phase separator (5), and a plurality of second overflow weirs are arranged on the second water collecting tank (16);

a first water collecting tank (11) is arranged at the top of the anaerobic intermediate sedimentation tank (2), a plurality of first overflow weirs (12) are arranged on the first water collecting tank (11), and a water outlet pipeline (8) is connected to the first water collecting tank (11);

a sewage circulating pump water inlet pipe (9) and a sewage circulating pump water outlet pipe (10) are arranged on the sludge circulating pump (3);

the second water collecting tank (16) is connected with the anaerobic intermediate sedimentation tank (2) through the intermediate sedimentation tank guide cylinder (6), the anaerobic intermediate sedimentation tank (2) is connected with the sludge circulating pump (3) through the sewage circulating pump water inlet pipe (9), and the sludge circulating pump (3) is connected with the bottom of the reactor tower body (1) through the sewage circulating pump water outlet pipe (10).

2. The UASB anaerobic reactor for landfill leachate treatment according to claim 1, wherein: reactor tower body (1) is square structure, square structure separates the back and forms two treatment areas side by side, every all be the diagonal angle in the treatment area and be provided with a pair of dive mixer (4), and the delivery port of anaerobism inlet channel (7) is two, two the delivery port is located two respectively the top of two adjacent dive mixers (4) in treatment area.

3. The UASB anaerobic reactor for landfill leachate treatment of claim 2, wherein: the methane collecting pipeline (15) is in a T-shaped structure, and a plurality of equal-height gas collecting branch pipes are distributed on the methane collecting pipeline (15).

4. The UASB anaerobic reactor for landfill leachate treatment according to claim 3, wherein: and the gas collecting branch pipe is provided with a positive and negative pressure protector (14).

5. The UASB anaerobic reactor for landfill leachate treatment according to any of claims 1-4, wherein: the bottom of the reactor tower body (1) is provided with a manhole (13).

Images