CN107973141B - Method for discharging semi-dry sludge storage bin - Google Patents
Method for discharging semi-dry sludge storage bin Download PDFInfo
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- CN107973141B CN107973141B CN201710927096.XA CN201710927096A CN107973141B CN 107973141 B CN107973141 B CN 107973141B CN 201710927096 A CN201710927096 A CN 201710927096A CN 107973141 B CN107973141 B CN 107973141B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
- B65G65/06—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with endless scraping or elevating pick-up conveyors
Abstract
The invention discloses a semi-dry sludge discharging and conveying method, which is convenient for discharging and conveying sludge temporarily stored in a semi-dry sludge storage bin. The method comprises the following steps: s1, pushing sludge on the surface of a sludge layer into a buffer tank layer by layer through a scraper group rotated by a movable rotary scraper device; s2, the semi-dry sludge entering the buffer tank slides into the screw conveyor under the action of gravity, and the sludge is conveyed to the scraper bucket conveyor through the screw conveyor; s3, lifting the sludge by a bucket elevator, then conveying the sludge to a chain plate conveyor or a belt conveyor and the like, and then feeding the sludge into a furnace for incineration after conveying the sludge to a feeding buffer bin in front of the furnace.
Description
Technical Field
The invention relates to a method for discharging a semi-dry sludge storage bin, belonging to the field of solid waste treatment.
Background
In recent years, with the rapid development of Chinese economy and the acceleration of urban process, the urban sewage treatment capacity and the corresponding sludge amount in China are rapidly increased. Meanwhile, along with the development of economy to higher level and the continuous improvement of living standard of people, the environment-friendly requirement is higher and higher, the situation of heavy water and light mud is changed greatly in the past, and the requirement on sludge treatment is increased and emphasized increasingly.
The disposal way of urban sewage sludge mainly comprises land utilization, sanitary landfill, incineration treatment and other methods. In recent years, sludge incineration technology has become the mainstream of sludge treatment, and is becoming popular in countries around the world. At present, sludge drying incineration is one of the main stream sludge treatment modes in China.
In the drying and incinerating treatment process, the dried semi-dry sludge is often temporarily stored, and then is discharged from a bin and conveyed into a furnace for incineration, for example, the semi-dry sludge generated during the overhaul of an incineration system, and the semi-dry sludge generated by other sewage treatment plants is conveyed to a certain sludge drying and incinerating factory for centralized incineration and the like, so that the semi-dry sludge is temporarily stored. In the semi-dry sludge discharging link, the storage amount of the semi-dry sludge is larger, the thickness of the material layer is higher, the pressure at the bottom of the material layer is larger, and the phenomenon of hardening of the semi-dry sludge exists, so that the semi-dry sludge is difficult to discharge. The mode of pushing sludge into the sludge conveyor through the bottom sliding frame is not easy to smoothly discharge semi-dry sludge from the storage bin and enter a conveying link due to the above reasons.
Disclosure of Invention
The invention aims to provide a method for discharging a semi-dry sludge storage bin, which can effectively realize semi-dry sludge discharging and conveying of a sludge storage bin.
In order to achieve the above object, the technical scheme of the present invention is as follows: a method for discharging a semi-dry sludge storage bin including a semi-dry sludge receiving pit and a buffer tank provided at one side of the semi-dry sludge receiving pit, characterized by comprising the steps of:
s1, arranging a movable rotary scraper device above a semi-dry sludge receiving pit, and pushing sludge on the surface of a sludge layer into a buffer tank layer by layer through the movable rotary scraper device;
s2, the semi-dry sludge entering the buffer tank slides into the screw conveyor under the action of gravity, and the sludge is conveyed to the scraper bucket conveyor through the screw conveyor;
s3, lifting the sludge by the scraper bucket conveyor, then conveying the sludge to a chain plate conveyor or a belt conveyor and the like, and then feeding the sludge into a furnace for incineration after conveying the sludge to a feeding buffer bin in front of the furnace.
Preferably, the guide rail is arranged above the semi-dry sludge receiving pit, the movable rotary scraper device comprises a travelling support frame, travelling trolleys are arranged at two ends of the travelling support frame, the travelling trolleys can travel along the guide rail to move the movable rotary scraper device, a main structure of the movable rotary scraper device is connected with the travelling support frame through a lifting device, a rotary scraper group is arranged at the bottom of the main structure of the movable rotary scraper device, and the height position of the main structure of the movable rotary scraper device can be adjusted through the lifting device so as to adapt to the stacking height of materials.
Preferably, the movable rotary scraper device is provided with a radar detector for measuring the distance between the rotary scraper and the material so as to control the height of the movable rotary scraper device.
Preferably, the movable rotary scraper device comprises at least two driving wheels, one driving wheel is a driving wheel, the other driving wheels are driven wheels, the rotary scraper group is fixed at a certain fixed point at the edge of the driving wheel through the rollers, and the rotary scraper group performs periodic reciprocating circular operation when the driving wheel rotates, so that semi-dry sludge is conveyed out of the bin.
Preferably, the connection part of the rotary scraping plate group and the driving wheel adopts telescopic connection and automatically resets the rotary scraping plate group through a spring, so that the rotary scraping plate group does not move along with the main structure of the movable rotary scraping plate device when the main structure of the movable rotary scraping plate device moves horizontally in the operation process. The rotary scraping plate group is in telescopic connection with the connecting part of the driving wheel, the scraping plate group performs rotary circular motion, after the scraping plate group is contacted with the semi-dry sludge, the scraping plate group is subjected to resistance along the moving direction of the main structure of the device, at the moment, the scraping plate group cannot move along the main structure direction of the scraping plate device due to the telescopic connection, and when the scraping plate group leaves the semi-dry sludge, the scraping plate group is automatically reset through a spring, so that the damage caused by the horizontal movement of the scraping plate group along with the main structure in the whole horizontal movement process of the main structure of the device is avoided.
Preferably, one end of the rotary scraping plate group is connected with the driving wheel, the other end of the rotary scraping plate group is connected with one driven wheel, and the middle position of the rotary scraping plate group is connected with the other driven wheel, so that the angular displacement, the angular speed and the angular acceleration of the driving wheel and the driven wheel are equal, and the running consistency of the driving wheel and the driven wheel is ensured.
Preferably, the scraper is vertically downward, two sides of the scraper are bent in the running front direction, and a material groove capable of storing materials is formed at the front side of the scraper, so that the conveyable quantity is increased, and the possibility that the materials adhere to the scraper is reduced.
Preferably, the distance L between two adjacent blades of the rotating blade set is preferably:
wherein R is the rotation radius of the scraper, and the rotation radius of the scraper is the rotation radius of the scraper when the scraper rotates, and specifically the distance between the connection point of the scraper and the driving wheel and the circle center of the driving wheel.
Preferably, the blade height H is preferably:
wherein R is the rotation radius of the scraping plate.
Preferably, the movable rotary scraping plate device comprises rollers and a crawler driven by the rollers, the crawler is provided with scraping plates, and the rollers drive the crawler to rotate so as to convey sludge into the buffer groove.
Preferably, the movable rotary scraper device is lower on the side of the screw conveyor than on the other side, so that the rotary scraper device is tilted to reduce the scraping resistance.
Preferably, the screw conveyor is located at the bottom of the side surface of the storage bin, so that materials can conveniently enter the scraper bucket conveyor.
Preferably, the screw conveyor can adopt a screw pump, a buffer tank is arranged at the inlet, and after the semi-dry sludge enters the buffer tank, the semi-dry sludge slides downwards under the action of gravity and enters the screw conveyor.
Preferably, the rotating speed of the screw conveyor is controlled by a variable frequency motor so as to realize the adjustment of the conveying amount.
Preferably, the stokehold feeding buffer bin and the feeding screw conveyor can realize non-uniform conveying possibly caused by front-stage discharging and conveying, and the conveying amount of the feeding screw conveyor is adjusted through frequency conversion.
According to the invention, the movable sludge scraping plate device can realize full coverage of the sludge bin, and no dead angle is left for discharging sludge in the bin; continuous and automatic sludge discharging operation can be realized, and human intervention and investment of operators are reduced; longer screw conveyor inlets also have some degree of mixing. Solves the problem that the semi-dry sludge is not easy to be delivered out of the warehouse for transportation after being piled up.
Drawings
FIG. 1 is a schematic cross-sectional view of a material storage bin and a bin outlet device;
FIG. 2 is a schematic cross-sectional view of a material storage bin and a bin outlet device;
FIG. 3 is a schematic plan view of a material storage bin cart;
FIG. 4 is a schematic view of a movable rotary squeegee assembly;
FIG. 5 is a schematic view of a squeegee;
FIG. 6 is a schematic view showing rotation of lower edges of adjacent two blades of the blade set;
fig. 7 is a schematic view of the telescopic connection of the scraper assembly and the driving wheel.
The drawings include: the device comprises a movable rotary scraper device main structure 1, a rotary scraper group 2, a screw conveyor 3, a buffer tank 4, a travelling support frame 5, a travelling trolley 6, a guide rail 7, a lifting device 8, a scraper bucket conveyor 9, a belt conveyor 10, a stokehold feeding buffer bin 11, a feeding screw 12, a driven wheel 13, a driving wheel 14, a motor 15, a driving wheel 16, a spring 17 and a sleeve 18.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments accompanied with the present invention are described in detail below.
Example 1
A device for discharging a semi-dry sludge storage bin, the semi-dry sludge storage bin comprising a semi-dry sludge receiving pit and a buffer tank provided at one side of the semi-dry sludge receiving pit, characterized in that the device comprises:
the movable rotary scraper device is arranged above the semi-dry sludge receiving pit and is used for pushing the sludge on the surface of the sludge layer into the buffer tank layer by layer;
the screw conveyor 3 is arranged in the buffer tank 4 and is used for conveying the sludge in the buffer tank to the scraper bucket conveyor;
the scraper type bucket elevator 9 is used for elevating the sludge and then conveying the sludge to a stokehold feeding buffer bin 11 through a chain plate conveyor or a belt conveyor 10.
Preferably, a guide rail 7 is arranged above the semi-dry sludge receiving pit, the movable rotary scraper device comprises a travelling support frame 5, travelling trolleys 6 are arranged at two ends of the travelling support frame 5, and can travel along the guide rail 7 to move the movable rotary scraper device, the main structure 1 of the movable rotary scraper device is connected with the travelling support frame through a lifting device 8, a rotary scraper group 2 is arranged at the bottom of the main structure 1 of the movable rotary scraper device, and the height position of the main structure of the movable rotary scraper device can be adjusted through the lifting device so as to adapt to the stacking height of materials.
Preferably, the movable rotary scraper device is provided with a radar detector for measuring the distance between the rotary scraper and the material so as to control the height of the rotary scraper device.
Preferably, the main structure of the movable rotary scraper device comprises at least two driving wheels, one driving wheel is a driving wheel 14 and is connected with a motor 15, the other driving wheels are driven wheels 13, the rotary scraper group 2 is fixed at a certain fixed point at the edge of the driving wheel through rollers, and when the driving wheels rotate, the scraper group performs periodic reciprocating circular operation, so that semi-dry sludge is conveyed out of a bin.
Preferably, the connection part of the rotary scraping plate group and the driving wheel adopts telescopic connection and automatically resets the rotary scraping plate group through a spring, so that the rotary scraping plate group 2 does not move along with the movable rotary scraping plate device main structure 1 when the movable rotary scraping plate device main structure 1 moves horizontally in the operation process. As shown in fig. 7, the edge of the driving wheel 16 is connected to a sleeve 18 by a spring 17, to which the rotating blade set is fixed, although this can be achieved in other ways. Because telescopic connection is adopted at the connection part of the rotary scraper group and the driving wheel and the driven wheel, the scraper group performs rotary circular motion, after the scraper group contacts with the semi-dry sludge, the scraper group is subjected to resistance along the moving direction of the main structure of the device, at the moment, the scraper group cannot move along the main structure direction of the scraper device due to the telescopic connection, and when the scraper group leaves the semi-dry sludge, the scraper group automatically resets through a spring, so that the damage caused by the horizontal movement of the scraper group along with the whole horizontal movement of the main structure of the device is avoided.
Preferably, one end of the rotary scraping plate group is connected with the driving wheel, the other end of the rotary scraping plate group is connected with one driven wheel, and the middle position of the rotary scraping plate group is connected with the other driven wheel, so that the angular displacement, the angular speed and the angular acceleration of the driving wheel and the driven wheel are equal, and the running consistency of the driving wheel and the driven wheel is ensured.
Preferably, the scraper is vertically downward, two sides of the scraper are bent in the running front direction, and a material groove capable of storing materials is formed at the front side of the scraper, so that the conveyable quantity is increased, and the possibility that the materials adhere to the scraper is reduced.
Preferably, the distance L between two adjacent blades of the rotating blade set is preferably:
wherein R is the rotation radius of the scraper, and the rotation radius of the scraper is the rotation radius of the scraper when the scraper rotates, and specifically the distance between the connection point of the scraper and the driving wheel and the circle center of the driving wheel.
Preferably, the blade height H is preferably:
wherein R is the rotation radius of the scraping plate.
Preferably, the movable rotary scraping plate device comprises rollers and a crawler driven by the rollers, the crawler is provided with scraping plates, and the rollers drive the crawler to rotate so as to convey sludge into the buffer groove.
Preferably, the movable rotary scraper device is lower on the side of the screw conveyor than on the other side, so that the rotary scraper device is tilted to reduce the scraping resistance.
Preferably, the screw conveyor is located at the bottom of the side surface of the storage bin, so that materials can conveniently enter the scraper bucket conveyor.
The embodiment of the invention provides a method for delivering and conveying semi-dry sludge, which is used for delivering and conveying the sludge of an external semi-dry sludge receiving pit of a sludge drying and incinerating factory, and comprises the following steps:
s1, pouring external semi-dry sludge into a semi-dry sludge receiving pit through a vehicle;
s2, pushing sludge on the surface of the sludge layer into the buffer tank layer by layer through a scraper group rotated by a movable rotary scraper device;
s3, the semi-dry sludge entering the buffer tank slides into the screw conveyor under the action of gravity, and the sludge is conveyed to the scraper bucket conveyor through the screw conveyor;
s4, lifting the sludge by the scraper bucket conveyor, then conveying the sludge to a chain plate conveyor or a belt conveyor and the like, and then feeding the sludge into a furnace for incineration after conveying the sludge to a feeding buffer bin in front of the furnace.
In the specific implementation process, when the external semi-dry sludge is poured into the vehicle, the device is moved to a position far away from the pouring point so as to avoid the device being buried by the sludge.
In the specific implementation process, two modes of manual control and automatic control can be adopted for operation, and the two operation modes are switched according to actual running conditions.
In a specific implementation, the operation control parameters include: the rotation speed of the scraper blade group, the horizontal moving speed of the device and the height of the device.
In the specific implementation process, the distance between the device and the material is acquired through radar detection, so that the height of the device is automatically controlled.
In a specific implementation process, the amount of the material fed into the furnace is jointly determined by a plurality of operation parameters, and the method comprises the following steps: the scraper rotating speed, the horizontal moving speed of the device, the height of the device, the conveying capacity of the delivery screw conveyor, the bucket elevator and the chain plate conveyor (or the belt conveyor), and the rotating speed of the stokehold feeding screw conveyor; and controlling the rotating speed of the feeding screw conveyor according to the feeding amount, and controlling the conveying link of the front section of the buffer bin according to the material level of the front feeding buffer bin.
In the specific implementation process, the distance between the circle center of the running track of the lower edge of the scraping plate and the surface of the material is taken:
as shown in fig. 6, at this time, the angle between the contact point between the lower edge of the scraping plate and the material surface and the circle center connecting line is 60 °, and the area of the material scraped once is rotated:
the volume of the scraped material is rotated once:
the scraped material volume is conveyed per hour:
taking:
time of one rotation: t=3 s, frequency 20 times/min;
radius of rotation: r=0.2m;
length of the scraper: d=0.3m;
theoretical calculation of the volume of material scraped per hour of delivery:
V h ＝11.95m 3
the materials can be conveyed in one day:
V d ＝286.9m 3
example two
Based on the same inventive concept, the embodiment of the invention provides a semi-dry sludge discharging and conveying method, which is used for discharging and conveying sludge in a semi-dry sludge temporary storage bin of a sludge drying and incinerating factory, and comprises the following steps:
s1, a certain sludge drying and incinerating factory can not timely put the dried semi-dried sludge into a furnace for incineration treatment, and the semi-dried sludge is temporarily stored in a semi-dried sludge temporary storage bin;
s2, pushing sludge on the surface of the sludge layer into the buffer tank layer by layer through a scraper group rotated by a movable rotary scraper device;
s3, the semi-dry sludge entering the buffer tank slides into the screw conveyor under the action of gravity, and the sludge is conveyed to the scraper bucket conveyor through the screw conveyor;
s4, lifting the sludge by the scraper bucket conveyor, then conveying the sludge to a chain plate conveyor or a belt conveyor and the like, and then feeding the sludge into a furnace for incineration after conveying the sludge to a feeding buffer bin in front of the furnace.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A method for discharging a semi-dry sludge storage bin including a semi-dry sludge receiving pit and a buffer tank provided at one side of the semi-dry sludge receiving pit, the method comprising the steps of:
s1, arranging a movable rotary scraper device above a semi-dry sludge receiving pit, and pushing sludge on the surface of a sludge layer into a buffer tank layer by layer through the movable rotary scraper device;
s2, the semi-dry sludge entering the buffer tank slides into the screw conveyor under the action of gravity, and the sludge is conveyed to the scraper bucket conveyor through the screw conveyor;
s3, lifting the sludge by the scraper bucket conveyor, and then carrying out chain plate conveyor or belt conveyor, conveying to a feeding buffer bin in front of the furnace, and then feeding into the furnace for burning.
2. The method for discharging the semi-dry sludge storage bin as claimed in claim 1, wherein a guide rail is provided above the semi-dry sludge receiving pit, the movable rotary scraper device comprises a traveling support frame, traveling trolleys are provided at both ends of the traveling support frame, the traveling trolleys travel along the guide rail to move the movable rotary scraper device, a main structure of the movable rotary scraper device is connected with the traveling support frame through a lifting device, a rotary scraper group is provided at a bottom of the main structure of the movable rotary scraper device, and a height position of the main structure of the movable rotary scraper device is adjusted by the lifting device to accommodate a stacking height of the material.
3. The method for discharging a semi-dry sludge storage silo according to claim 1, wherein the movable rotary scraper means is provided with a radar detector for measuring the distance of the rotary scraper from the material to control the height of the movable rotary scraper means.
4. The method for discharging a semi-dry sludge storage bin as claimed in claim 1, wherein the main structure of the movable rotary scraper device includes at least two driving wheels, one of which is a driving wheel and the other of which is a driven wheel, the rotary scraper group is fixed at a certain fixed point at the edge of the driving wheel by means of rollers, and the scraper group is periodically reciprocated and circularly operated when the driving wheel is rotated, thereby transferring the semi-dry sludge out of the bin.
5. The method for discharging a semi-dry sludge storage silo according to claim 4, wherein the connection of the rotary scraping plate group and the circular disk is in telescopic connection and is automatically reset by a spring so as to cope with the situation that the rotary scraping plate group does not move with the main structure of the movable rotary scraping plate device when the main structure of the movable rotary scraping plate device moves horizontally during operation.
6. The method for discharging a semi-dry sludge storage as claimed in claim 4, wherein one end of the rotating scraper group is connected with the driving wheel, the other end of the rotating scraper group is connected with one driven wheel, and the middle position of the rotating scraper group is connected with the other driven wheel, so that the equality of the angular displacement, the angular velocity and the angular acceleration of the driving wheel and the driven wheel is ensured, and the consistency of the operation of the driving wheel and the driven wheel is ensured.
7. The method for discharging a semi-dry sludge storage silo according to claim 4, wherein the rotary scraper group comprises a plurality of scrapers arranged in parallel, the scrapers are vertically downward and are bent in the forward direction of operation on both sides, and a material groove capable of storing material is formed on the front side of the scrapers to increase the conveyability and reduce the possibility of the material adhering to the scrapers.
8. The method for discharging a semi-dry sludge storage silo according to claim 4, wherein the distance L between adjacent two scrapers of the rotating scraper group is preferably:
wherein R is the rotation radius of the scraping plate.
9. The method for discharging a semi-dry sludge storage silo according to claim 4, wherein the scraper height H is preferably:
wherein R is the rotation radius of the scraping plate.
10. The method for discharging a semi-dry sludge storage bin as claimed in claim 1, wherein the movable rotary scraping means includes rollers and a crawler driven by the rollers, the crawler being provided with a scraping plate, and the crawler being rotated by the rollers to convey the sludge into the buffer tank.
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| CN201710927096.XA CN107973141B (en) | 2017-09-29 | 2017-09-29 | Method for discharging semi-dry sludge storage bin |
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| CN201710927096.XA CN107973141B (en) | 2017-09-29 | 2017-09-29 | Method for discharging semi-dry sludge storage bin |
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| CN117209104B (en) * | 2023-11-08 | 2024-01-02 | 成都嘉德数源环保科技有限公司 | Rural sewage integrated treatment device and treatment method thereof |
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