CN218656083U - Biological drying pretreatment facility for domestic garbage of villages and towns in northern arid regions - Google Patents

Abstract

The utility model discloses a biological drying pretreatment facility for domestic garbage in villages and towns in northern arid areas, which comprises a biological drying bin, a heat preservation mechanism and a secondary pollution control mechanism; the heat preservation mechanism comprises a foundation and a heat preservation workshop; a groove is dug on the slope of the foundation, and the biological drying bin is arranged in the groove; the heat-preservation workshop is arranged around the biological drying bin; the heat preservation workshop comprises a discharging workshop, a leachate treatment workshop, an odor treatment workshop and a feeding workshop which are sequentially arranged from bottom to top; secondary pollution control mechanism includes leachate treatment facility and odor treatment facility, and leachate treatment facility installs and has the leachate collecting vessel at leachate treatment workshop interior and intercommunication, and odor treatment facility installs at odor treatment workshop, and leachate treatment facility and odor treatment facility intercommunication, the utility model discloses a heat preservation mechanism makes equipment also can normal use winter in chilly north, and the energy consumption is low, and the wasting of resources is few.

Description

Biological drying pretreatment facility for domestic garbage of villages and towns in northern arid regions

Technical Field

The utility model relates to a domestic waste handles technical field, especially relates to a biological mummification preliminary treatment facility of domestic waste in villages and small towns in arid area in the north.

Background

At present, domestic garbage treatment in northern villages and towns mainly adopts a landfill mode, and a small part of domestic garbage treatment adopts in-situ incineration and resource utilization. The household garbage landfill has a plurality of problems, and the problems of secondary pollution control such as leachate and odor generated after the garbage landfill in the operation process are solved in addition to site selection, construction and the like of the landfill. The existing secondary pollution treatment technology and equipment treat the domestic garbage after the landfill, leachate and odor generated by microorganism activities in the domestic garbage are difficult to collect and treat, the investment is large, the leachate and the odor are not effectively treated in most cases and cannot be discharged after reaching the standard, and therefore, the pollution is caused to the ecological environment and underground water.

At present, some techniques which are not actually applied are used for researching whether the microbial process generated in the domestic garbage after the landfill can be advanced to the place before the landfill and is carried out under the controllable condition, namely the domestic garbage biological drying pretreatment technique. The biological drying pretreatment of the household garbage can greatly reduce the water content in the household garbage, is favorable for controlling the secondary pollution of the primary garbage, is favorable for landfill of the household garbage, and is also favorable for incineration treatment and resource utilization of the household garbage, such as:

(1) The invention patent (application number: CN 201010216384.2) entitled "hydrolysis-aerobic two-stage biological drying method for domestic garbage", is characterized in that the domestic garbage is piled in a horizontal tank type composting reactor, is ventilated, hydrolyzed, turned and dried, and then is removed out of the reactor. The method is suitable for drying treatment of household garbage with the water content higher than 65% and solid waste mainly comprising biodegradable waste.

(2) The invention patent (application number: CN 201310109663.2) of the invention patent named as 'vertical biological drying device without auxiliary materials and operation method' lifts the material to be dried to the top of the drying bin for feeding, stirring and mixing, carries out fermentation drying, discharges clinker at the bottom, adds new materials into part of the clinker, and repeats the process.

(3) The invention patent (application number: CN201710760442. X) with the name of 'garbage storage pit capable of carrying out biological drying and a using method thereof' adopts the partition drying treatment, the garbage amount in each area is stored for 1 day, and each area is recycled.

(4) The patent of utility model patent (application number: CN 201520055921.8) entitled as a raw garbage aerobic biological drying chamber discloses a biological drying cylinder with an internal and external structure, which needs to lift the domestic garbage and put the domestic garbage into an upper charging hole for drying, discharges water-containing steam odor, collects percolate, thereby reducing the secondary pollution during the transportation of the domestic garbage.

(5) A horizontal biological drying bin is built on the ground for drying, and leachate and odor are collected, wherein the patent of the invention is a closed biological drying bin (with the application number of CN 201910319492.3).

(6) Patents such as 'domestic garbage biological drying treatment device and treatment method (application number: CN 201811172555.9)', (7) 'domestic garbage biological drying treatment device (application number: CN 201821632550.5)' and (8) 'domestic garbage biological drying treatment device and treatment method (application number: CN 201811172555.9)', and the like, utilize a wastewater evaporation and condensation conversion technology to convert high-concentration percolate wastewater into low-concentration condensate wastewater, and reduce the wastewater treatment difficulty and treatment cost; the on-line monitoring and recycling technology can reduce the air supply amount of the fresh air source, reduce the waste gas amount processed by the tail end waste gas processing system and reduce the waste gas processing cost. The device is provided with a large number of leachate pipelines and facility equipment, including a back-spraying system, but does not carry out final treatment, does not insulate the whole device, and adjusts the temperature of the garbage pile body by heating or stopping heating and air supply.

In addition, there are some biological drying technologies and apparatuses for high organic content solid waste such as sludge, such as "a device and method for rapid box-type biological drying of sludge (application number: CN 201220218962.0)", "a biological drying treatment method for sludge (application number: 201410700581. X)"; the technologies and equipment pay more attention to the utilization of high organic matter content and high calorific value in the sludge, and the conditions can not be realized in the domestic garbage, if leachate does not need to be treated, water is evaporated from the self-heating of the sludge; the town domestic waste has low organic matter content, cannot generate enough heat to evaporate water, and in addition, microbial inoculum is required to be added for sludge biological drying to adjust the water, so that the method is not suitable for and does not need the biological drying technology of the domestic waste in the villages and the towns in the north. Other technical means are substantially identical to the above-described techniques and devices.

The above technology and equipment, although the form and the working mode are various, have slot type, many storehouses, horizontal and vertical mummification storehouse, and the feed inlet, discharge gate all are located the eminence discharge gate at the horizon or feed inlet and are located the horizon, some still collected the leachate even foul smell, but all do not carry out the field treatment, do not have to build special workshop for this reason either.

For biological drying pretreatment of domestic garbage in villages and towns in northern arid regions, the main consideration factors are as follows:

(1) And (3) temperature. Biological desiccation involves a microbial process and requires certain temperature conditions (about 55 ℃). The temperature in winter in typical northern areas can reach-20 ℃, and the depth of frozen soil is more than 1 meter (such as about 150cm of inner Mongolia and about 200cm of northeast). Without good insulation measures, the biological process will stagnate due to low temperatures (below 15 ℃), the equipment (especially equipment involving leachate) will freeze in winter, the pipeline will freeze, and it will not work.

(2) And (4) integration. Secondary pollution generated by biological drying mainly comprises leachate and odor, and needs to be collected and treated on site. Because no nearby large-scale treatment facility is generally available in northern villages and towns, the biological drying facility is required to finish the collection and treatment of leachate and odor, and the integrated cooperative treatment of equipment and facilities is required.

The existing domestic garbage biological drying technology can not overcome the problems that the temperature is low in winter in the north, the biological drying efficiency is low, and equipment can not work due to freezing, normal production can not be guaranteed, leachate and odor cannot be subjected to on-site integrated synergistic treatment, environmental pollution is easily caused, and the biological drying technology can not be effectively applied to biological drying pretreatment of domestic garbage in villages and towns in arid regions in the north.

Therefore, if the domestic garbage biological drying pretreatment is carried out in northern villages and towns, the above technology and equipment show insurmountable difficulty, can not complete normal biological drying work and cause environmental pollution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a biological mummification preliminary treatment facility of domestic waste in villages and small towns of arid area in north to solve the problem that above-mentioned prior art exists, make domestic waste can carry out on-the-spot integration coprocessing with odor to the secondary pollution (leachate) of production, and the processing facility is applicable to northern low temperature environment.

In order to achieve the above object, the utility model provides a following scheme: a biological drying pretreatment facility for domestic garbage of villages and towns in northern arid regions comprises a biological drying bin, a heat preservation mechanism and a secondary pollution control mechanism;

the top end of the biological drying bin is provided with a feed inlet, the side surface of the bottom of the biological drying bin is provided with a circular access hole, and the bottom of the biological drying bin is provided with a discharge hole;

the heat preservation mechanism comprises a foundation and a heat preservation workshop; a groove is formed in the slope of the foundation, and the biological drying bin is arranged in the groove;

the heat-preservation working room is arranged around the biological drying bin; the heat preservation workshop comprises a discharging workshop, a leachate treatment workshop, an odor treatment workshop and a feeding workshop which are sequentially arranged from bottom to top; the feeding workshop is arranged corresponding to the feeding hole;

secondary pollution control mechanism includes leachate treatment facility and odor treatment facility, leachate treatment facility installs the intercommunication has the leachate collecting vessel in the leachate treatment workshop, odor treatment facility installs the odor treatment workshop, leachate treatment facility with odor treatment facility intercommunication.

Preferably, one surfaces of the interior of the leachate treatment workshop and the odor treatment workshop, which are close to the biological drying bin, are arc-shaped and fixedly connected and attached to the outer wall of the biological drying bin; and a rolling door is arranged in the feeding workshop.

Preferably, install the spiral discharging machine in the ejection of compact workplace, the spiral discharging machine includes the blown down tank, blown down tank one end is equipped with a plurality of water apertures, the water aperture has through the pipe intercommunication the leachate collecting vessel, leachate collecting vessel intercommunication has leachate adjusting barrel, leachate adjusting barrel with leachate treatment facility intercommunication.

Preferably, the leachate treatment equipment is communicated with a first water outlet pipeline, a second water outlet pipeline and a third water outlet pipeline; the first water outlet pipeline is communicated with a middle water barrel, the middle water barrel is communicated with the leachate adjusting barrel, the second water outlet pipeline is communicated with the odor treatment equipment, and the third water outlet pipeline is communicated with the outside world naturally; the top of the leachate treatment equipment is communicated with the odor treatment equipment through an air outlet pipeline.

Preferably, the upper part of the biological drying bin is provided with an air outlet communicated with the odor treatment equipment; the top of the odor treatment equipment is communicated with the outside through an exhaust pipeline.

Preferably, the upper part of the biological drying bin is a cylindrical tank body, and the feed inlet is formed in the top end of the tank body; the biological drying storehouse lower part is at the bottom of the wedge that two symmetry inclined planes constitute, circular access hole is seted up at the bottom of the wedge the place ahead, the discharge gate is seted up bottom at the bottom of the wedge, spiral discharging machine under the discharge gate.

Preferably, install the fan in the ejection of compact workplace, the fan intercommunication has a plurality of ventilation pipes, ventilation pipe slope symmetrical arrangement is in on the inclined plane at the bottom of the wedge, the ventilation pipe is pressing close to a plurality of ventilation holes have been seted up to the angular edge department of biological mummification storehouse bottom inclined plane one side, the ventilation hole is followed inclined plane is downward at the bottom of the wedge.

Preferably, the terminal point of the spiral discharging machine is provided with a hopper lifting machine correspondingly arranged with the spiral discharging machine, and the terminal point of the hopper lifting machine is provided with a garbage collection pool.

Preferably, the heat-preservation workshops are provided with doors, and stairs are fixedly connected between platforms where the heat-preservation workshops are located.

The utility model discloses a following technological effect: the utility model discloses a biological drying pretreatment facility for domestic garbage in villages and towns in arid northern areas, wherein a biological drying bin is used for storing and treating the domestic garbage, is arranged in a groove of a foundation and surrounds a heat preservation workshop, and is used for preventing the biological drying bin from freezing in winter, so that the biological drying bin can normally react in winter, and the applicable minimum temperature is-20 ℃; leachate treatment equipment and odor treatment equipment of the secondary pollution control mechanism are respectively used for treating leachate and odor generated by microbial reaction, the leachate treatment equipment provides necessary water for the odor treatment equipment, the odor treatment equipment purifies the odor generated by the leachate treatment equipment, the leachate treatment equipment and the odor treatment equipment assist each other to finish collection, treatment and recycling of secondary pollution, an internal circulation mechanism is formed, so-called secondary pollution control integrated cooperative treatment is realized, and energy consumption and resource waste are reduced. The utility model discloses an equipment also can normal use in chilly northern winter, and the energy consumption is low, and the wasting of resources is few, solves northern villages and towns area and generally does not have nearby large-scale treatment facility and can utilize to cause the pollution problem to ecological environment and groundwater, make the facility be applicable to northern arid villages and towns area more.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 creative efforts.

FIG. 1 is a schematic overall view of the present invention;

FIG. 2 is a schematic structural view of the heat-insulating mechanism of the present invention;

FIG. 3 is a schematic view of a feed cell according to the present invention;

FIG. 4 is a schematic structural view of a secondary pollution control mechanism according to the present invention;

FIG. 5 is a schematic view of the installation location of a plenum of the present invention;

FIG. 6 is a schematic view of a forced air system according to the present invention;

wherein, 1, a biological drying bin; 2. a feed inlet; 3. an access hole; 4. a foundation; 5. a trench; 6. a discharging workshop; 7. a leachate treatment workshop; 8. an odor treatment workshop; 9. a heat insulation material plate; 10. a feeding workshop; 11. leachate treatment equipment; 12. odor treatment equipment; 13. a roller shutter door; 14. a spiral discharging machine; 15. a discharge chute; 16. a small water outlet hole; 17. a leachate collection barrel; 18. a middle water bucket; 19. a first outlet conduit; 20. a second outlet conduit; 21. a third outlet conduit; 22. an air outlet pipe; 23. a leachate adjusting barrel; 24. an exhaust duct; 25. a fan; 26. a vent pipe; 27. a vent hole; 28. a hopper elevator; 29. a refuse collection tank; 30. a staircase; 31. a door; 32. a window; 33. and (4) discharging a material outlet.

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 work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1-6, the utility model provides a biological drying pretreatment facility for domestic garbage in villages and towns in northern arid regions, which comprises a biological drying bin 1, a heat preservation mechanism and a secondary pollution control mechanism;

the top end of the biological drying bin 1 is provided with a feeding hole 2, the side surface of the bottom of the biological drying bin 1 is provided with a circular access hole 3, and the bottom of the biological drying bin is provided with a discharging hole 33;

the heat preservation mechanism comprises a foundation 4 and a heat preservation workshop; a trench 5 is dug on the slope of the foundation 4, and the biological drying bin 1 is arranged in the trench 5;

the heat preservation workshop is arranged around the biological drying bin 1; the heat preservation workshop comprises a discharging workshop 6, a leachate treatment workshop 7, an odor treatment workshop 8 and a feeding workshop 10 which are sequentially arranged from bottom to top; the feeding working room 10 is arranged corresponding to the feeding hole 2;

the secondary pollution control mechanism comprises a leachate treatment device 11 and an odor treatment device 12, the leachate treatment device 11 is installed in the leachate treatment workshop 7 and communicated with a leachate collection barrel 17, the odor treatment device 12 is installed in the odor treatment workshop 8, and the leachate treatment device 11 is communicated with the odor treatment device 12.

The utility model discloses a biological mummification preliminary treatment facility of domestic waste in villages and small towns in arid area in north, biological mummification storehouse 1 is used for storing biochemical rubbish, and biological mummification storehouse 1 sets up in the slot 5 of ground 4 and surrounds and be provided with the heat preservation workshop, prevents that biological mummification storehouse 1 from freezing in winter, makes it also can normally react in winter, and the minimum temperature of being suitable for is-20 ℃; leachate treatment equipment 11 and odor treatment equipment 12 of the secondary pollution control mechanism are respectively used for treating leachate and odor generated by reaction, and leachate treatment equipment 11 provides necessary water for odor treatment equipment 12, so that secondary pollution collection treatment and recycling are completed, and energy consumption and resource waste are reduced. The utility model discloses an equipment also can normal use in chilly northern winter, and the energy consumption is low, and the wasting of resources is few, solves northern villages and towns area and generally does not have nearby large-scale treatment facility and can utilize to cause the pollution problem to ecological environment and groundwater, make the facility be applicable to northern arid villages and towns area more.

Further, the biological drying bin 1 is of a vertical structure and is convenient to feed and discharge, the biological drying bin 1 is made of steel materials, a plurality of reinforcing ribs are arranged on the tank body, a feeding hole 2 in the upper portion of the tank body is provided with a sliding cover, the whole biological drying bin 1 is supported by a plurality of supporting columns, the supporting columns stand on a concrete foundation and are welded with embedded ground feet, and the biological drying bin 1 is guaranteed to be vertical and not to fall; the working space is formed at the lower part of the tank body by building a retaining wall by utilizing the pillars. A clearance (larger than 1 meter) is reserved between the tank body and the foundation to be filled with heat-preservation soil (backfill soil), and heat-preservation protection on three sides of the tank body is formed.

The open one side of biological mummification storehouse 1, if not exposed to the sun and totally exposed, can't resist the low temperature in winter in the north, consequently the utility model discloses to this extend ground increase the heat preservation measure to the mode of building steel construction heat preservation workshop outward has been taken, all obtains the protection of heat preservation measure around messenger's biological mummification storehouse 1. The outer walls of the workshops adopt heat-insulating plates 9 (the thickness is more than 100 mm), the biological drying bin 1 is surrounded from top to bottom within the range of 90 degrees (1/4 circular arc), and as the aerobic fermentation process is carried out in the biological drying bin 1, certain heat (about 55 ℃) can be generated, so that the workshops can not be cold (kept at more than 15 ℃) in winter while preserving heat of the biological drying bin 1. For the integrated synergistic treatment of leachate and odor, the biodegradability of fresh leachate is high, the existing rural sewage treatment technology, such as A2O-MBR technology, can be adopted, and the practicability is high; the odor treatment can adopt a biological deodorization mode, and is economical and practical. Because the leachate treatment needs aeration and has peculiar smell, the leachate is collected and treated by odor treatment equipment; the odor treatment needs a certain humidity, water is sprayed, and a water source is provided after the leachate treatment, so that the purpose of secondary pollution cooperative treatment is achieved.

According to the further optimized scheme, one surfaces of the leachate treatment workshop 7 and the odor treatment workshop 8, which are close to the biological drying bin 1, are arc-shaped and are attached to the outer wall of the biological drying bin 1; the feeding cabin 10 is provided with a roller shutter 13. The feeding workshop 10 is arranged above the feeding hole 2, and the rolling door 13 is arranged on the feeding workshop 10 and positioned on a sloping roof for the garbage transport vehicle to unload, and keeps warm after being closed.

Further optimize the scheme, install spiral discharge machine 14 in ejection of compact workshop 6, spiral discharge machine 14 includes blown down tank 15, and 15 one end of blown down tank are equipped with a plurality of water apertures 16, and water aperture 16 has leachate collecting vessel 17 through the pipe intercommunication, and leachate collecting vessel 17 intercommunication has leachate adjusting vessel 23, and leachate adjusting vessel 23 communicates with leachate treatment facility 11. When the spiral discharging machine 14 works, leachate is discharged from the small water outlet hole 16, passes through the conduit and enters the leachate collecting barrel 17. Sewage pumps are arranged in the leachate collecting barrel 17 and the leachate adjusting barrel 23 and used as power for lifting water.

In a further optimized scheme, the leachate treatment equipment 11 is communicated with a first water outlet pipeline 19, a second water outlet pipeline 20 and a third water outlet pipeline 21; the first water outlet pipeline 19 is communicated with a reclaimed water barrel 18, the reclaimed water barrel 18 is communicated with a leachate adjusting barrel 23, the second water outlet pipeline 20 is communicated with the odor treatment equipment 12, and the third water outlet pipeline 21 is communicated with the outside world; the top of the leachate treatment means 11 communicates with the odour treatment means 12 via an outlet duct 22. The reclaimed water tank 18 is provided with a water pump which can pump the sewage into a leachate adjusting tank 23.

In a further optimized scheme, the upper part of the biological drying bin 1 is provided with an air outlet communicated with the odor treatment equipment 12; the top of the odor treatment device 12 is in communication with the ambient via an exhaust duct 24. The odor generated by the oxidation reaction in the biological drying bin 1 also enters the odor treatment device 12 for treatment, and is discharged by the exhaust pipeline 24 after the treatment is finished.

According to a further optimized scheme, the upper part of the biological drying bin 1 is a cylindrical tank body, and a feed inlet 2 is formed in the top end of the tank body; the lower part of the biological drying bin 1 is a wedge-shaped bottom formed by two symmetrical inclined planes, the access hole 3 is arranged in front of the wedge-shaped bottom, the discharge hole is arranged at the bottom of the wedge-shaped bottom, and the discharge hole 33 is connected with the spiral discharging machine 14. Garbage enters from the feeding hole 2 and is discharged from the discharging hole 33, and the access hole 3 is an access hole for people to perform fault treatment and enter the drying bin for overhauling or detecting temperature.

Further optimization scheme installs fan 25 in the ejection of compact workshop 6, and fan 25 communicates has a plurality of ventilation pipes 26, and ventilation pipe 26 slope symmetric arrangement is on the inclined plane at the bottom of the wedge, and ventilation pipe 26 has seted up a plurality of ventilation holes 27 in the angular edge department of pressing close to biological mummification storehouse 1 bottom inclined plane one side, and ventilation hole 27 is along inclined plane down at the bottom of the wedge. The blower 25 can be a Roots blower with certain air pressure to provide fresh air, so that the oxidation reaction oxygen in the biological drying bin 1 is sufficient; the ventilation pipes 26 are obliquely arranged, so that the ventilation range is uniformly distributed, and meanwhile, the upper leachate is guided to flow to a leachate collecting opening in front of the tank body; the air vent 27 is downward, so that sundries above the air vent are prevented from entering the pipe, and the air vent is prevented from being blocked and affecting air outlet.

In a further optimized scheme, a hopper lifting machine 28 arranged corresponding to the spiral discharging machine 14 is arranged at the terminal point of the spiral discharging machine, and a garbage collecting pool 29 is arranged at the terminal point of the hopper lifting machine 28. The hopper elevator 28 is used for conveying the garbage discharged from the spiral discharging machine 14 to a garbage collecting tank 29

Further optimizing the scheme, the heat preservation workshop has all been seted up door 31 and window 32, and the rigid coupling has stair 30 between the platform that each heat preservation workshop was located. The working platforms are connected by stairs 30 (steel), so that personnel traffic is facilitated, a door 31 is arranged for entering and exiting, and a window 32 is used for ventilation.

The using method comprises the following steps:

garbage is fed from a feed inlet 2 at the top of a biological drying bin 1, aerobic fermentation (about 55 ℃) is carried out in a tank body, and biological drying is carried out; a certain amount of garbage is put into the tank body every day, and the capacity of the tank body can meet the requirement that the garbage is put into the tank body for a plurality of continuous days (> 7 days to fully decompose the biomass). The water in the garbage (especially the released intracellular water) is collected at the bottom of the biological drying bin 1 in a leachate precipitation mode and then treated, or is collected and treated together with odor in a water vapor mode along with aeration. The garbage after biological drying is extruded and further dehydrated under the action of gravity and falls into a spiral discharging machine 14 at the bottom of the biological drying bin 1; the material is discharged from the front end of the biological drying bin 1, falls into a hopper of a hopper elevator 28, and is conveyed to a garbage collecting tank 29 positioned at a high position by a rail of the hopper elevator 28. The garbage in the garbage collection tank 29 is cleared to be buried in a landfill site, or is further evaporated and dried under the drought condition in the north and then is burnt.

The utility model discloses combine domestic waste biological mummification and secondary pollution control technique together, guarantee the implementation of domestic waste biological mummification processing in arid area in the north to independent coprocessing secondary pollution. Specifically, the heat preservation effect of the soil layer with the thickness of more than 1 meter (equivalent to the depth of local frozen soil) around the biological drying bin is more than that of a soil layer with the thickness of more than 1 meter, when the ambient temperature in winter is the applicable lowest temperature of-20 ℃, the temperature of the periphery of the tank body of the drying bin is higher than 0 ℃, the central temperature of garbage in the tank body reaches 55 ℃, and the temperature of a leachate treatment workshop and an odor treatment workshop is higher than 15 ℃; the leachate after treatment reaches the national standard of urban sewage recycling farmland irrigation water quality (GB 20922-2007), and the odor treatment meets the national odor pollution emission standard.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the scope of the present invention defined by the claims.

Claims (9)

1. The utility model provides a biological mummification preliminary treatment facility of rural domestic waste in arid area of north which characterized in that: comprises a biological drying bin (1), a heat preservation mechanism and a secondary pollution control mechanism;

the biological drying bin is characterized in that a feed inlet (2) is formed in the top end of the biological drying bin (1), a round access hole (3) is formed in the side face of the bottom of the biological drying bin (1), and a discharge outlet (33) is formed in the bottom of the biological drying bin;

the heat preservation mechanism comprises a foundation (4) and a heat preservation workshop; a groove (5) is formed in the slope of the foundation (4), and the biological drying bin (1) is arranged in the groove (5);

the heat-preservation workshop is arranged around the biological drying bin (1); the heat preservation workshop comprises a discharging workshop (6), a leachate treatment workshop (7), an odor treatment workshop (8) and a feeding workshop (10) which are sequentially arranged from bottom to top; the feeding working room (10) is arranged corresponding to the feeding port (2);

secondary pollution control mechanism includes leachate treatment facility (11) and odor treatment facility (12), leachate treatment facility (11) are installed leachate treatment workshop (7) interior and the intercommunication has leachate collecting vessel (17), odor treatment facility (12) are installed odor treatment workshop (8), leachate treatment facility (11) with odor treatment facility (12) intercommunication.

2. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 1, which is characterized in that: one surfaces of the interior of the leachate treatment workshop (7) and the odor treatment workshop (8), which are close to the biological drying bin (1), are arc-shaped and fixedly connected and attached to the outer wall of the biological drying bin (1); and the feeding workshop (10) is provided with a rolling door (13).

3. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 1, characterized in that: install spiral discharge machine (14) in ejection of compact workshop (6), spiral discharge machine (14) include blown down tank (15), blown down tank (15) one end is equipped with a plurality of water apertures (16), water aperture (16) have through the pipe intercommunication leachate collecting vessel (17), leachate collecting vessel (17) intercommunication has leachate adjusting vessel (23), leachate adjusting vessel (23) with leachate treatment facility (11) intercommunication.

4. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 3, which is characterized in that: the leachate treatment equipment (11) is communicated with a first water outlet pipeline (19), a second water outlet pipeline (20) and a third water outlet pipeline (21); the first water outlet pipeline (19) is communicated with a reclaimed water barrel (18), the reclaimed water barrel (18) is communicated with the leachate adjusting barrel (23), the second water outlet pipeline (20) is communicated with the odor treatment equipment (12), and the third water outlet pipeline (21) is communicated with the outside world; the top of the leachate treatment equipment (11) is communicated with the odor treatment equipment (12) through an air outlet pipeline (22).

5. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 1, which is characterized in that: the upper part of the biological drying bin (1) is provided with an air outlet communicated with the odor treatment equipment (12); the top of the odor treatment device (12) is communicated with the outside through an exhaust pipeline (24).

6. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 1, which is characterized in that: the upper part of the biological drying bin (1) is a cylindrical tank body, and the feed inlet (2) is formed in the top end of the tank body; biological mummification storehouse (1) lower part is at the bottom of the wedge that two symmetrical inclined planes constitute, set up in circular access hole (3) the place ahead at the bottom of the wedge, set up in discharge gate (33) bottom at the bottom of the wedge, spiral discharge machine (14) down connect discharge gate (33).

7. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 6, which is characterized in that: install fan (25) in ejection of compact workplace (6), fan (25) intercommunication has a plurality of ventilation pipes (26), ventilation pipe (26) slope symmetrical arrangement is in on the inclined plane at the bottom of the wedge, ventilation pipe (26) are pressing close to a plurality of ventilation holes (27) have been seted up to the angular edge department of biological drying storehouse (1) bottom inclined plane one side, ventilation hole (27) are followed inclined plane is downward at the bottom of the wedge.

8. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 3, which is characterized in that: the terminal point of spiral discharging machine (14) is provided with hopper lifting machine (28) rather than corresponding the setting, hopper lifting machine (28) terminal point is provided with rubbish collecting pit (29).

9. The biological drying pretreatment facility for the domestic garbage of villages and towns in northern arid regions according to claim 1, which is characterized in that: the heat preservation workshops are provided with doors (31) and windows (32), and stairs (30) are fixedly connected among platforms where the heat preservation workshops are located.

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