CN215756868U

CN215756868U - Treatment facility of municipal refuse transfer station landfill leachate

Info

Publication number: CN215756868U
Application number: CN202121348747.8U
Authority: CN
Inventors: 刘文山
Original assignee: Guangdong Diezhongdie Film Technology Co ltd
Current assignee: Guangdong Diezhongdie Film Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-02-08
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a treatment device for garbage percolate of an urban garbage transfer station, which comprises an evaporator, a condenser, a vacuum assembly, a circulating pump, a heat pump compressor, an expansion valve and a pipeline, wherein the evaporator is provided with a percolate inlet, a concentrated solution discharge pipeline and a heat exchange coil, the condenser is internally provided with a heat exchange pipe, the heat exchange coil, the heat pump compressor and the heat exchange pipe are connected in pairs through the pipelines, the expansion valve is arranged on the pipeline between the heat exchange coil and the heat exchange pipe, the circulating pump is connected with the concentrated solution discharge pipeline, the evaporator is internally provided with a nozzle, the circulating pump is connected with the evaporator through the pipeline, and the vacuum assembly is connected with the evaporator through the pipeline. The utility model has small scaling risk, pollution resistance and small occupied area, and the circulating treatment is carried out by the circulating pump, the equipment concentration ratio is large, clear water accounts for 95 percent, the concentration liquid amount is small, and the utility model is corrosion resistant, reduces the corrosion of the garbage percolate to the material in a low-temperature state and can furthest reduce the precipitation of organic matters and ammonia nitrogen from the garbage percolate in the evaporation process.

Description

Treatment facility of municipal refuse transfer station landfill leachate

Technical Field

The utility model relates to the field of solution treatment equipment, in particular to treatment equipment for garbage leachate of an urban garbage transfer station.

Background

The garbage transfer station is an important hub for collecting and treating urban garbage, is a hub for connecting a garbage generating source with a tail end treatment system, and is an essential link in a garbage collecting, transporting and disposing system of urban domestic garbage. The domestic garbage is initially compressed in the front end collecting station and then transported to the garbage transfer station through the garbage truck. After being mechanically compressed in the transfer station, the garbage truck is transported to a terminal processing system. The landfill leachate of the transfer station has high concentration, complex pollutant components and high concentration of organic pollutants and ammonia nitrogen, and can cause serious pollution to the surrounding environment if not treated.

The garbage percolate of the garbage transfer station has the common characteristics of the garbage percolate and has high treatment difficulty. The traditional treatment process generally adopts biochemical treatment and membrane treatment or a simple biochemical treatment process or a simple membrane treatment process. The treatment process has good effect, but has defects, such as large occupied area of equipment, long process route, and the condition that most garbage transfer stations are arranged in the center of a city or the periphery of the city and are not suitable for the process; the equipment is easy to be polluted and blocked and is cleaned frequently, the waste water concentration membrane equipment of the garbage transfer station is easy to be polluted, the system is cleaned frequently, and more polluted waste water is generated by cleaning; the concentration ratio is low, and the concentration ratio of the common membrane treatment process is about 60 percent, so that a large amount of concentrated solution needs to be treated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a treatment device for the garbage percolate of an urban garbage transfer station, which has the advantages of pollution resistance, small occupied area, long service life and large concentration ratio.

In order to achieve the purpose, the utility model adopts the following scheme:

a treatment device for municipal refuse transfer station landfill leachate comprises an evaporator, a condenser, a vacuum component, a circulating pump, a heat pump compressor, an expansion valve, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline, wherein the evaporator is used for treating the landfill leachate, the vacuum component is used for manufacturing a vacuum environment, a leachate inlet is formed in one side of the evaporator, a concentrated solution discharge pipeline is arranged at the bottom of the evaporator, a heat exchange coil is arranged in the evaporator, a heat exchange pipe is arranged in the condenser, the water inlet end of the heat exchange coil is communicated with one end of the heat pump compressor through the first pipeline, the water outlet end of the heat exchange pipe is communicated with the other end of the heat pump compressor through the second pipeline, the water outlet end of the heat exchange coil is communicated with the water inlet end through the third pipeline, the expansion valve is arranged on the third pipeline, one end of the circulating pump is communicated with the concentrated solution discharge pipeline, the fourth pipeline is located in the evaporator and located at one end above the heat exchange coil, a nozzle is arranged at the other end of the fourth pipeline, the other end of the fourth pipeline is communicated with the other end of the circulating pump, the fifth pipeline is communicated with the top of the evaporator and used for maintaining the evaporator and a vacuum environment in the condenser, and the fifth pipeline penetrates through the condenser. The landfill leachate in the vacuum environment has low boiling point and can be evaporated at low temperature.

Preferably, the vacuum assembly comprises a clean water storage tank, a vacuum generator, a centrifugal pump and a pipeline assembly, the air suction end of the vacuum generator is communicated with the top of the evaporator through a pipeline five, the vacuum generator is communicated with the clean water storage tank and the centrifugal pump in pairs through the pipeline assembly, a water production outlet is formed in the outer wall surface of the clean water storage tank, and the vacuum generator is an air ejector.

Preferably, an oil separator is arranged on the first pipeline, and a gas-liquid separator is arranged on the second pipeline.

Preferably, the heat pump compressor is a vortex air conditioner compressor, and the condenser is a shell-and-tube heat exchanger.

Preferably, an air condenser is arranged between the evaporator and the expansion valve on the second pipeline.

Preferably, a wire mesh demister capable of eliminating foam in the evaporator is arranged at the inner top of the evaporator.

Preferably, a plurality of liquid level observation mirrors which have different heights and can observe the liquid level in the evaporator are arranged on the outer wall surface of the evaporator.

Preferably, the outer wall surface of the evaporator is also provided with a defoaming agent inlet, a cleaning agent inlet and an air inlet.

Preferably, a first pneumatic valve is arranged on the concentrate discharge pipeline positioned on the outer side part pipeline of the circulating pump.

Preferably, a second pneumatic valve is arranged on the pipeline which is positioned outside the evaporator and is positioned in the fourth position.

To sum up, utility model is for its beneficial effect of prior art: the utility model has simple structure, small scaling risk, pollution resistance and small occupied area, and the circulating pump is used for repeated circulating treatment, so that the equipment concentration ratio is large, the clear water accounts for 95 percent, the concentration liquid amount is small, the treatment is convenient, the corrosion resistance and the service life are high, the corrosion of the landfill leachate to materials can be reduced in a low-temperature state, the precipitation of organic matters and ammonia nitrogen from the landfill leachate in the evaporation process can be reduced to the maximum extent, and the effluent is good.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: 10. an evaporator; 11. a leachate inlet; 12. a concentrated solution discharge pipeline; 13. a heat exchange coil; 14. a wire mesh demister; 15. a liquid level sight glass; 16. an inlet for a defoaming agent; 17. a cleaning agent inlet; 20. a condenser; 21. a condenser heat exchange tube; 30. a vacuum assembly; 31. a clear water storage tank; 311. a water production outlet; 32. a vacuum generator; 33. a centrifugal pump; 40. a circulation pump; 50. a heat pump compressor; 51. an oil separator; 52. a gas-liquid separator; 60. an expansion valve; 71. a first pipeline; 72. a second pipeline; 73. a third pipeline; 74. A fourth pipeline; 741. a nozzle; 75. a fifth pipeline; 81. a first pneumatic valve; 82. and a second pneumatic valve.

Detailed Description

The following detailed description provides many different embodiments or examples for implementing the utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. In addition, repeated reference numbers, such as repeated numbers and/or letters, may be used in various embodiments. These iterations are for simplicity and clarity of describing the utility model, and are not intended to represent a particular relationship between the various embodiments and/or structures discussed.

Furthermore, spatially relative terms, such as "below" … "," below "," inside-out "," above "," upper "and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature during use or operation of the device, and may include different orientations of the device during use or operation of the device as illustrated in the figures. The device may be turned to different degrees of rotation or other orientations and the spatially relative adjectives used therein may be similarly interpreted and are thus not to be construed as limitations on the utility model, the terms "first" and "second" being used merely for descriptive purposes and not to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The utility model will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings: the municipal refuse transfer station landfill leachate treatment equipment shown in fig. 1 comprises an evaporator 10 for treating landfill leachate, a condenser 20, a vacuum assembly 30 for creating a vacuum environment, a circulating pump 40, a heat pump compressor 50, an expansion valve 60, a first pipeline 71, a second pipeline 72, a third pipeline 73, a fourth pipeline 74 and a fifth pipeline 75, and is characterized in that: a percolate inlet 11 is arranged on one side of the evaporator 10, a concentrated solution discharge pipeline 12 is arranged at the bottom of the evaporator 10, a heat exchange coil 13 is arranged in the evaporator 10, a heat exchange tube 21 is arranged in the condenser 20, the water inlet end of the heat exchange coil 13 is communicated with one end of the heat pump compressor 50 through a first pipeline 71, the water outlet end of the heat exchange tube 21 is communicated with the other end of the heat pump compressor 50 through a second pipeline 72, the water outlet end of the heat exchange coil 13 is communicated with the water inlet end of the heat exchange tube 21 through a third pipeline 73, the expansion valve 60 is arranged on the third pipeline 73, one end of the circulating pump 40 is communicated with the concentrated solution discharge pipeline 12, a nozzle 741 is arranged at one end, located in the evaporator 10, of the fourth pipeline 74 and located above the heat exchange coil 13, and the other end of the fourth pipeline 74 is communicated with the other end of the circulating pump 40, the vacuum assembly 30 is communicated with the top of the evaporator 10 through the fifth pipe 75 for maintaining the vacuum environment inside the evaporator 10 and the condenser 20, the fifth pipe 75 passes through the condenser 20, a first pneumatic valve 81 is arranged on the part of the pipe outside the circulating pump 40 of the concentrated solution discharge pipe 12, and a second pneumatic valve 82 is arranged on the part of the pipe outside the evaporator 10 of the fourth pipe 74.

The oil separator 51 is arranged on the first pipeline 71, the gas-liquid separator 52 is arranged on the second pipeline 72, the heat pump compressor 50 is a vortex air conditioner compressor, the condenser 20 is a shell-and-tube heat exchanger, the air condenser 61 is arranged on the third pipeline 73 and between the evaporator 10 and the expansion valve 60, the wire mesh demister 14 capable of eliminating foam in the evaporator 10 is arranged at the top in the evaporator 10, the liquid sight glasses 15 which are different in height and capable of observing the liquid level in the evaporator 10 are arranged on the outer wall surface of the evaporator 10, and the defoaming agent inlet 16, the cleaning agent inlet 17 and the air inlet 18 are further arranged on the outer wall surface of the evaporator 10.

One embodiment of the vacuum assembly 30 of the present invention: the vacuum assembly 30 comprises a clean water storage tank 31, a vacuum generator 32, a centrifugal pump 33 and a pipeline assembly 34, the air suction end of the vacuum generator 32 is communicated with the top of the evaporator 10 through a pipeline five 75, the vacuum generator 32 is communicated with the clean water storage tank 31 and the centrifugal pump 33 through the pipeline assembly 34 in pairs, a water production outlet 311 is formed in the outer wall surface of the clean water storage tank 31, and the vacuum generator 32 is an air ejector.

When in use: injecting a certain amount of starting tap water into the clean water storage tank 31, starting the centrifugal pump 33, making the water discharged from the centrifugal pump 33 pass through the vacuum generator 32 and then return to the clean water storage tank 31, wherein the vacuum generator 32 adopts a conventional air ejector, the air in the evaporator 10 and the air in the condenser 20 are continuously sucked into the air suction end of the ejector, the air and the clean water at the outlet of the centrifugal pump 33 are mixed and return to the clean water storage tank 31, the centrifugal pump 33 always works during the system operation and always keeps the vacuum degree in the evaporator 10 and the vacuum degree in the condenser 20, and the absolute pressure of the system is usually controlled to be 4.2 kPa-6.3 kPa.

Because the inside of the evaporator 10 is a vacuum environment, garbage leachate enters from the leachate inlet 11 and is automatically sucked into the evaporator 10, after the garbage leachate reaches a working liquid level LS103, the leachate inlet 11 is closed, the circulating pump 40 is started, circulating liquid is uniformly sprayed on the outer surface of the heat exchange coil 13 through the nozzle 741 to exchange heat with a high-temperature and high-pressure refrigerant in the heat exchange coil 13, because the pressure in the evaporator 10 is controlled between 4.2kPa and 6.3kPa, the evaporation temperature of the garbage leachate is between 30 and 37 ℃, the garbage leachate evaporated at normal temperature becomes normal-temperature steam, the steam is in contact with the wire mesh demister 14 in the rising process, the garbage water concentrated water carried by the steam is intercepted, and clean steam is condensed in the condenser 20 through the pipeline four 74. Along with the evaporation, the liquid level of the evaporator 10 is reduced to the low liquid level LS102, and then the system reopens the percolate inlet 11, replenishes the landfill percolate to the working liquid level LS103, and the like is repeated. When the evaporation is carried out to a certain degree, the concentration of the landfill leachate in the evaporator 10 rises to a certain value, so that the boiling point of the landfill leachate is increased too much, and the evaporation cannot be carried out, at this time, the concentrated percolate needs to be discharged, and in order to facilitate the discharge of the concentrated solution, the vacuum assembly 30 needs to be stopped before the discharge, the air inlet 18 is opened, air is supplemented, the first pneumatic valve 81 is opened, the second pneumatic valve 82 is closed, the concentrated solution in the evaporator 10 is discharged through the concentrated solution discharge pipeline 12 by the circulating pump 40, and the liquid level is low, namely LS101, which indicates that the concentrated solution is completely discharged. And starting to work the vacuum assembly until all the concentrated liquid is discharged, wherein the work period is one work period. According to the system requirement, a certain amount of defoaming agent can be added through the defoaming agent inlet 17. When the system needs to be cleaned, the cleaning agent inlet 16 is opened, a certain amount of cleaning agent is added, and the heat exchange coil 13 can be cleaned through circulating spraying.

A refrigerant, such as R22 or R134a, is usually put into the condenser 20. The heat pump compressor 50 heats and boosts gaseous refrigerant, high-temperature and high-pressure refrigerant steam exchanges heat with the garbage percolate outside the heat exchange coil 13 in the heat exchange coil 13, the refrigerant in the heat exchange coil 13 condenses while releasing heat, the heat is transferred to the garbage percolate through the surface of the heat exchange coil 13, the percolate exchanges heat and is evaporated and separated into steam and partial concentrated solution, the refrigerant enters the air condenser 61 after being condensed by the heat exchange coil 13, the refrigerant exchanges heat with outside air in the air condenser 61 and is further cooled to become high-pressure normal-temperature refrigerant, generally the air condenser 61 controls the refrigerant to be cooled by 3-5 ℃, the expansion valve 60 is arranged behind the air condenser 61, the normal-temperature and high-pressure refrigerant enters the outside of the condenser heat exchange tube 21 through the expansion valve 60, and the normal-temperature liquid refrigerant evaporates instantly due to instant pressure reduction, the refrigerant steam which absorbs heat and becomes low-temperature and low-pressure exchanges heat with the percolate steam in the heat exchange tube 21 of the condenser, the percolate steam is condensed into water, and the low-temperature and low-pressure refrigerant steam returns to the heat pump compressor 50 after exchanging heat through the condenser, so that the operation is repeated. The oil separator 51 is used for separating refrigerant steam from the heat pump compressor 50 and lubricating oil from the heat pump compressor 50, so that blockage of the first pipeline 71 can be reduced, the service life of the heat pump compressor 50 can be prolonged, the gas-liquid separator 52 is used for ensuring that the refrigerant entering the heat pump compressor 50 is in a steam state, liquid flushing of the heat pump compressor 50 is prevented, and the risk of failure of the heat pump compressor 50 is reduced.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that the present invention can be further modified in various ways without departing from the spirit and scope of the present invention, and these modifications and improvements are all within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an urban garbage transfer station landfill leachate's treatment facility, including evaporimeter (10), condenser (20) and the vacuum assembly (30) of making the vacuum environment that are used for handling landfill leachate, circulating pump (40), heat pump compressor (50), expansion valve (60) and pipeline one (71), pipeline two (72), pipeline three (73), pipeline four (74) and pipeline five (75), its characterized in that: evaporator (10) one side is equipped with filtration liquid import (11) and is equipped with concentrate discharge pipe (12) bottom this evaporator (10) to and be equipped with heat exchange coil (13) in this evaporator (10) be equipped with heat exchange tube (21) in condenser (20), heat exchange coil (13) are intake end and are passed through pipeline (71) with heat pump compressor (50) one end is linked together, heat exchange tube (21) play water end pass through pipeline two (72) with the heat pump compressor (50) other end is linked together, heat exchange coil (13) play water end pass through pipeline three (73) with heat exchange tube (21) end of intaking is linked together, expansion valve (60) are installed on this pipeline three (73), circulating pump (40) one end with concentrate discharge pipe (12) are linked together pipeline four (74) are located in evaporator (10) and be in the one end of heat exchange coil (13) top is equipped with the nozzle (741) The other end of the pipeline four (74) is communicated with the other end of the circulating pump (40), the vacuum assembly (30) is communicated with the top of the evaporator (10) through the pipeline five (75) for maintaining the vacuum environment in the evaporator (10) and the condenser (20), and the pipeline five (75) penetrates through the condenser (20).

2. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: vacuum component (30) are including clear water storage tank (31), vacuum generator (32), centrifugal pump (33) and pipeline components (34), vacuum generator (32) end of breathing in passes through five (75) of pipeline with evaporimeter (10) top is linked together, vacuum generator (32) with clear water storage tank (31) and centrifugal pump (33) are passed through two liang of pipeline components (34) are linked together be equipped with product water outlet (311) on clear water storage tank (31) outer wall, vacuum generator (32) are the air ejector.

3. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: an oil separator (51) is arranged on the first pipeline (71), and a gas-liquid separator (52) is arranged on the second pipeline (72).

4. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: the heat pump compressor (50) is a vortex air conditioner compressor, and the condenser (20) is a shell-and-tube heat exchanger.

5. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: and an air condenser (61) is arranged on the pipeline III (73) and positioned between the evaporator (10) and the expansion valve (60).

6. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: and a wire mesh demister (14) capable of eliminating foam in the evaporator (10) is arranged at the top in the evaporator (10).

7. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: a plurality of liquid level observation mirrors (15) which have different heights and can observe the liquid level in the evaporator (10) are arranged on the outer wall surface of the evaporator (10).

8. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: and the outer wall surface of the evaporator (10) is also provided with a defoaming agent inlet (16), a cleaning agent inlet (17) and an air inlet (18).

9. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: and a first pneumatic valve (81) is arranged on the partial pipeline of the concentrated solution discharge pipeline (12) which is positioned outside the circulating pump (40).

10. The municipal refuse transfer station landfill leachate treatment facility according to claim 1, wherein: and a second pneumatic valve (82) is arranged on the pipeline IV (74) positioned outside the evaporator (10).