CN218089249U - Landfill leachate mummification processing apparatus and rubbish recovery system - Google Patents

Abstract

The utility model discloses a landfill leachate mummification processing apparatus and garbage recovery system, including solid-liquid separation tank, evacuation equipment and heating intermediate layer, the inside of the solid-liquid separation tank is provided with a hollow inner chamber for storing landfill leachate, the top of the solid-liquid separation tank is provided with a feed inlet, the position of the hollow inner chamber close to the feed inlet is provided with a filtering screen, the top of the solid-liquid separation tank is provided with a stirring part, the bottom of the solid-liquid separation tank is provided with a discharge port, and the top of the solid-liquid separation tank is provided with an evacuation interface; the vacuumizing equipment is connected with the solid-liquid separation tank through a vacuumizing interface; the heating interlayer surrounds the outer surface of the solid-liquid separation tank, a heat exchange medium is arranged in the heating interlayer, a heating module is arranged on the heating interlayer, and a heat exchange medium inlet and a heat exchange medium outlet are formed in the heating interlayer. The utility model discloses can realize landfill leachate's solid-liquid separation.

Description

Landfill leachate mummification processing apparatus and rubbish recovery system

Technical Field

The utility model relates to a sewage treatment field, in particular to landfill leachate mummification processing apparatus and rubbish recovery system.

Background

The domestic garbage processing equipment mainly comprises incineration, composting, mechanical treatment, landfill and the like. Among them, the construction of waste incineration plants has been rapidly developed in recent years. In the processes of transportation, stacking and landfill of garbage, whether in a garbage landfill or an incineration plant, various metabolic substances and moisture are generated due to anaerobic fermentation, organic matter decomposition, rainwater leaching, underground water soaking and the like, and high-concentration organic wastewater, namely garbage leachate with extremely complex components is formed; after untreated landfill leachate flows through the ground surface or permeates into underground water, serious secondary pollution is caused to the environment. Therefore, the pollution control of the landfill leachate becomes an important component content of the harmless treatment of the garbage.

The nature of landfill leachate depends on factors such as the composition of the landfill, the landfill time, the climatic conditions and the design of the landfill site, and generally has the following characteristics: (1) complex pollutant components: more than 22 pollutants in the leachate are listed in a blacklist of environment priority control pollutants by China and EPA, and the water quality components are very complex; (2) high organic contaminant concentration: the maximum BOD and COD concentration in the landfill leachate can reach tens of thousands mg/L, but the biodegradability is good, and the B/C is generally more than 0.4. (3) high ammonia nitrogen concentration: the ammonia nitrogen concentration is correspondingly increased along with the increase of the landfill time, and the ammonia nitrogen concentration of the landfill leachate with high ammonia nitrogen content, which is mostly in the form of ammonia nitrogen, is increased along with the increase of the number of years of landfill, generally about 0-5000 mg/L. (4) the metal ion and salt content is high: because the garbage contains more metal ions and salt, the content of the metal ions and the salt in the leachate is higher, and the conductivity of the leachate reaches 6000-40000us/cm.

The leachate has high concentration and complex components, and puts special requirements on the treatment process. Several common treatment processes include: (1) biological treatment method: anaerobic biological treatment, aerobic biological treatment and anaerobic-aerobic biological treatment. (2) a physical treatment method: chemical oxidation, flocculation-precipitation, activated carbon adsorption, membrane technologies (ultrafiltration, nanofiltration and reverse osmosis). (3) a combined process: MBR-NF/MBR-NF-RO process, DTRO process, and MVC-DI process.

Because the pollutants are complex, the concentration is high, the change of water quality and water quantity is large, and the treatment difficulty is large, the treatment is generally carried out by adopting a combined process. The above-mentioned combination processes all have their own drawbacks. In the MBR-NF-RO process, 25 to 30 percent of concentrated solution obtained by advanced membrane treatment is enriched with high-concentration nondegradable COD and salt, and the mature, stable and economic treatment technology is not available at present, so that the MBR-NF-RO process can only be used for recharging landfill sites, back-spraying incinerators or transporting municipal sewage treatment plants outside. The physicochemical technology mainly comprising MVC mechanical evaporation and ammonia ion exchange adsorption technology has the advantages that an evaporator is easy to scale, the system operation stability is not high, and evaporation residual concentrated solution and ion exchange regenerated solution are difficult to flow out. The DTRO membrane has short service life and high cost. And the water yield is seriously reduced along with the extension of the running time, so that the efficient continuous running is difficult.

The concentrated solution produced in the nanofiltration and reverse osmosis processes has high pollutant concentration and high salinity, and is difficult to further treat and dispose. In the heat treatment process of MVC, a large amount of organic matters in part of concentrated solution are converted into Volatile Organic Carbon (VOC), which has adverse effect on the environment; the treatment cost is high; and the final product is paste containing a large amount of organic matters, so that the final disposal is difficult to realize. Therefore, there is a need to develop efficient final disposal process equipment for landfill leachate concentrate. The device comprises a device for drying the landfill leachate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a landfill leachate mummification processing apparatus and rubbish recovery system for carry out solid-liquid separation to landfill leachate.

According to the utility model discloses a landfill leachate mummification processing apparatus of first aspect embodiment, include: the garbage treatment device comprises a solid-liquid separation tank, vacuumizing equipment and a heating interlayer, wherein a hollow inner cavity for storing garbage percolate is arranged in the solid-liquid separation tank, a feed inlet is formed in the top of the solid-liquid separation tank, a filter screen for filtering solid impurities is arranged at the position, close to the feed inlet, of the hollow inner cavity, a stirring part extending towards the hollow inner cavity is arranged at the top of the solid-liquid separation tank, a discharge outlet is formed in the bottom of the solid-liquid separation tank, and a vacuumizing interface communicated with the hollow inner cavity is formed in the top of the solid-liquid separation tank; the vacuum pumping equipment is connected with the solid-liquid separation tank through the vacuum pumping interface; the heating interlayer surrounds the outer surface of the solid-liquid separation tank, a heat exchange medium for heating the solid-liquid separation tank is arranged in the heating interlayer, a heating module for heating the heat exchange medium is arranged on the heating interlayer, and a heat exchange medium inlet and a heat exchange medium outlet are formed in the heating interlayer.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, be equipped with on the lateral wall of solid-liquid separation jar with the clearance mouth that the filter sieve net corresponds.

According to the utility model discloses an aspect landfill leachate mummification processing apparatus, stirring portion include the rotation axis, with rotation axis vertically stirring crossbeam and follow the stirring board of stirring crossbeam downwardly extending.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, the interval is provided with the polylith on the stirring crossbeam the stirring board, and be located the rotation axis both sides the stirring board is the symmetry setting.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, stirring board detachably connect in the stirring crossbeam.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, heating intermediate layer outside surface is provided with the insulating layer.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, be provided with in the heating intermediate layer and be used for detecting the temperature detector of heat transfer medium temperature.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, be equipped with in the solid-liquid separation jar and be used for detecting the moisture detector of cavity inner chamber humidity.

According to the utility model discloses the first aspect landfill leachate mummification processing apparatus, be equipped with the visual window who is used for observing on solid-liquid separation jar's the lateral wall.

According to a second aspect embodiment of the utility model discloses a rubbish recovery system, include as the first aspect landfill leachate mummification processing apparatus of any one.

According to the utility model discloses landfill leachate mummification processing apparatus has following beneficial effect at least: the solid-liquid separation tank is internally provided with a heating interlayer and a vacuumizing interface connected with vacuumizing equipment, and the garbage leachate in the tank is heated through the heating interlayer, so that the liquid in the garbage leachate is evaporated and separated; and the vacuum pumping equipment extracts air in the tank, reduces the pressure in the tank, enables liquid in the landfill leachate to be easier to evaporate, saves energy consumption, simultaneously extracts evaporated steam for separation, and finally realizes the solid-liquid separation of the landfill leachate so as to better carry out the next treatment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an embodiment of a landfill leachate drying treatment device of the present invention;

FIG. 2 is a schematic structural view of an embodiment of a heating interlayer in the garbage leachate drying treatment device of the present invention;

fig. 3 is a schematic structural view of an embodiment of a stirring part in the garbage leachate drying treatment device of the present invention.

Reference numerals: a solid-liquid separation tank 100; a hollow interior 110; a feed inlet 120; a first hydraulically driven cap 121; a discharge port 130; a second hydraulically driven cap 131; an evacuation interface 140; a safety valve 150; a filter screen mesh 160; a cleaning port 161; a stirring section 170; a rotary shaft 171; a stirring beam 172; a stir plate 173; a visible window 180; heating the interlayer 200; a heat exchange medium inlet 210; a heat exchange medium outlet 220; a temperature detector 230; a discharge port 240; a thermal insulation layer 250; a heating module 260; the vacuum apparatus 300 is evacuated.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, and a plurality of means are two or more. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

A landfill leachate drying treatment device according to an embodiment of the present invention is described in detail with reference to fig. 1. It is to be understood that the following description is illustrative only and is not intended as a specific limitation of the invention.

Referring to fig. 1, according to the embodiment of the present invention, a drying treatment device for landfill leachate includes a solid-liquid separation tank 100, a vacuum pumping apparatus 300 and a heating interlayer 200, a hollow inner chamber 110 for storing landfill leachate is provided inside the solid-liquid separation tank 100, a feed inlet 120 is provided on the top of the solid-liquid separation tank 100, a filtering screen 160 for filtering solid impurities is provided at a position of the hollow inner chamber 110 close to the feed inlet 120, a stirring portion 170 extending to the hollow inner chamber 110 is provided on the top of the solid-liquid separation tank 100, a discharge port 130 is provided on the bottom of the solid-liquid separation tank 100, and a vacuum pumping interface 140 communicating with the hollow inner chamber 110 is provided on the top of the solid-liquid separation tank 100; the vacuum-pumping equipment 300 is connected with the solid-liquid separation tank 100 through a vacuum-pumping interface 140; referring to fig. 2, the heating interlayer 200 surrounds the outer surface of the solid-liquid separation tank 100, a heat exchange medium for heating the solid-liquid separation tank 100 is provided in the heating interlayer 200, a heating module 260 for heating the heat exchange medium is provided on the heating interlayer 200, and a heat exchange medium inlet 210 and a heat exchange medium outlet 220 are provided on the heating interlayer 200.

It should be noted that the solid-liquid separation tank 100 is provided with a hollow inner cavity 110 therein for accommodating landfill leachate or other sewage to be treated. A feeding hole 120 is formed in the top of the solid-liquid separation tank 100, and a first hydraulic driving cover 121 is arranged on the feeding hole 120 to automatically open and close the feeding hole 120 through the first hydraulic driving cover 121, so that feeding is facilitated; the bottom of the solid-liquid separation tank 100 is provided with a discharge port 130, the discharge port 130 is provided with a second hydraulic drive cover 131, and the discharge port 130 can be automatically opened and closed through the second hydraulic drive cover 131, so that solid residues with lower water content obtained after solid-liquid separation of landfill leachate or other sewage can be conveniently discharged. The upper part of the solid-liquid separation tank 100 is provided with a vacuumizing interface 140 communicated with the hollow inner cavity 110, and the solid-liquid separation tank 100 is connected with vacuumizing equipment 300 through the vacuumizing interface 140. The upper part of the solid-liquid separation tank 100 is also provided with a pressure gauge and a safety valve 150.

It can be understood that there may be large solid impurities in the landfill leachate, and based on this, the present embodiment can isolate the large solid impurities on the screen mesh 160 by disposing the screen mesh 160 to filter the landfill leachate poured into the solid-liquid separation tank 100, so as to prevent the large solid impurities from entering the hollow inner cavity 110.

The embodiment of the utility model provides an in, be equipped with stirring portion 170 in the solid-liquid separation jar 100, the landfill leachate in cavity inner chamber 110 can be stirred to stirring portion 170, makes the landfill leachate in cavity inner chamber 110 fully contact the inner wall of solid-liquid separation jar 100 for the heating efficiency of heating intermediate layer 200 to landfill leachate is accelerated greatly, and then promotes mummification efficiency.

In the embodiment of the present invention, the heating interlayer 200 is provided with a heating module 260 for heating the heat transfer medium, so that the heat transfer medium can be always kept at a higher temperature to heat the solid-liquid separation tank 100. The heating jacket 200 is provided outside the solid-liquid separation tank 100, and the heating jacket 200 is provided in close contact with the solid-liquid separation tank 100. A heat exchange medium is arranged in the heating interlayer 200, and a heat exchange medium inlet 210 and a heat exchange medium outlet 220 are arranged on the heating interlayer 200; further, the heat exchange medium inlet 210 is disposed at the lower portion of the heating interlayer 200, and the heat exchange medium outlet 220 is disposed at the upper portion of the heating interlayer 200, so that the heat exchange medium flows from bottom to top, thereby improving the heating effect on the liquid inside the solid-liquid separation tank 100. A discharge port 240 is further provided at the bottom of the heating jacket 200 for discharging the remaining heat exchange medium and the cleaning water.

The solid-liquid separation tank 100 of the embodiment is provided with a heating interlayer 200 and a vacuum pumping device 300, and the landfill leachate in the tank is heated by the heating interlayer 200, so that the liquid in the landfill leachate is evaporated and separated; and the vacuum extractor 300 extracts air in the tank, reduces the pressure in the tank, enables liquid in the landfill leachate to evaporate more easily, saves energy consumption, and simultaneously extracts evaporated water vapor for separation, finally realizes the solid-liquid separation of the landfill leachate, so as to better carry out the next treatment.

In an embodiment of the present invention, the solid-wall upper liquid separation tank 100 is provided with a cleaning opening 161 corresponding to the screen 160.

It can be understood that, in order to discharge the solid impurities filtered by the screen 160, the cleaning opening 161 is provided at a position of the sidewall of the solid-liquid separation tank 100 corresponding to the screen, so as to facilitate cleaning of the solid impurities accumulated on the screen.

Referring to fig. 3, in an embodiment of the present invention, the stirring part 170 includes a rotation shaft 171, a stirring beam 172 perpendicular to the rotation shaft 171, and a stirring plate 173 extending downward from the stirring beam 172.

According to the embodiment, the landfill leachate in the hollow inner cavity 110 can fully contact the inner wall of the solid-liquid separation tank 100, the heating efficiency of the heating interlayer 200 on the landfill leachate is greatly accelerated, and the drying efficiency is further improved.

It should be noted that, in this embodiment, in order to avoid the impurities of the landfill leachate from adhering to the stirring plate 173, the stirring plate 173 may be inclined at a certain angle, and the inclination angle may be set by a person skilled in the art as required, which is not limited in this embodiment.

Referring to fig. 3, in an embodiment of the present invention, a plurality of stirring plates 173 are disposed on the stirring beam 172 at intervals, and the stirring plates 173 on two sides of the rotating shaft 171 are symmetrically disposed.

In this embodiment, the number of the stirring plates 173 can be set by a person skilled in the art as required, and this embodiment is not limited thereto.

In an embodiment of the present invention, the stirring plate 173 is detachably connected to the stirring beam 172.

It is understood that in this embodiment, the stir plate 173 is removable, facilitating cleaning or replacement of the stir plate 173.

In an embodiment of the present invention, the outer surface of the heating interlayer 200 is provided with a thermal insulation layer 250.

In this embodiment, the heat insulating layer 250 is disposed outside the heating interlayer 200, so that heat loss to the outside can be reduced, heat is concentrated inside the solid-liquid separation tank 100, and energy efficiency is improved.

In an embodiment of the present invention, a temperature detector 230 for detecting the temperature of the heat transfer medium is disposed in the heating interlayer 200.

In this embodiment, a temperature detector 230 is further disposed in the heating interlayer 200, and the temperature of the heat transfer medium in the heating interlayer 200 is monitored and fed back by the temperature detector 230, so that the heating process is effectively controlled.

In an embodiment of the present invention, a humidity detector for detecting the humidity of the hollow inner cavity 110 is disposed in the solid-liquid separation tank 100.

In order to clarify the drying degree in the hollow cavity 110, the present embodiment is provided with a humidity detector inside the solid-liquid separation tank 100, and the drying degree can be known by detecting the humidity in the hollow cavity 110.

In an embodiment of the present invention, a visual window 180 for observation is disposed on the sidewall of the solid-liquid separation tank 100.

In this embodiment, the user can observe the drying condition inside the solid-liquid separation tank 100 through the visual window 180.

The embodiment of the utility model also provides a rubbish recovery system, including any one landfill leachate mummification processing apparatus of above-mentioned embodiment.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a landfill leachate mummification processing apparatus which characterized in that includes:

the garbage filter comprises a solid-liquid separation tank, a filter screen and a stirring part, wherein a hollow inner cavity for storing garbage percolate is arranged in the solid-liquid separation tank, a feed inlet is formed in the top of the solid-liquid separation tank, a filter screen mesh for filtering solid impurities is arranged at the position, close to the feed inlet, of the hollow inner cavity, the top of the solid-liquid separation tank is provided with the stirring part extending towards the hollow inner cavity, a discharge outlet is formed in the bottom of the solid-liquid separation tank, and a vacuumizing interface communicated with the hollow inner cavity is formed in the top of the solid-liquid separation tank;

the vacuumizing equipment is connected with the solid-liquid separation tank through the vacuumizing interface;

the heating interlayer surrounds the outer surface of the solid-liquid separation tank, a heat exchange medium for heating the solid-liquid separation tank is arranged in the heating interlayer, a heating module for heating the heat exchange medium is arranged on the heating interlayer, and a heat exchange medium inlet and a heat exchange medium outlet are formed in the heating interlayer.

2. The landfill leachate drying treatment device of claim 1, wherein the sidewall of the solid-liquid separation tank is provided with a cleaning port corresponding to the screen mesh.

3. The landfill leachate drying treatment device of claim 1, wherein the stirring part comprises a rotating shaft, a stirring beam perpendicular to the rotating shaft, and a stirring plate extending downward from the stirring beam.

4. The landfill leachate drying treatment device of claim 3, wherein a plurality of the stirring plates are arranged on the stirring beam at intervals, and the stirring plates on two sides of the rotating shaft are symmetrically arranged.

5. The landfill leachate drying treatment device of claim 4, wherein the stirring plate is detachably connected to the stirring beam.

6. The landfill leachate drying treatment device of claim 1, wherein a thermal insulation layer is disposed on the outer side surface of the heating interlayer.

7. The landfill leachate drying treatment device of claim 1, wherein a temperature detector for detecting the temperature of the heat exchange medium is arranged in the heating interlayer.

8. The landfill leachate drying treatment device of claim 1, wherein a humidity detector for detecting the humidity of the hollow inner cavity is arranged in the solid-liquid separation tank.

9. The landfill leachate drying treatment device of claim 1, wherein a visual window for observation is provided on the side wall of the solid-liquid separation tank.

10. A garbage recycling system, comprising the garbage leachate drying treatment apparatus as claimed in any one of claims 1 to 9.

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