CN219631563U - Light garbage deep separation device - Google Patents
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- CN219631563U CN219631563U CN202223134056.5U CN202223134056U CN219631563U CN 219631563 U CN219631563 U CN 219631563U CN 202223134056 U CN202223134056 U CN 202223134056U CN 219631563 U CN219631563 U CN 219631563U
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 103
- 238000000926 separation method Methods 0.000 title claims abstract description 50
- 238000004140 cleaning Methods 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000012216 screening Methods 0.000 claims abstract description 36
- 239000002689 soil Substances 0.000 claims abstract description 28
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 238000011010 flushing procedure Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000003864 humus Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 238000007885 magnetic separation Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 12
- 239000000126 substance Substances 0.000 description 11
- 238000010248 power generation Methods 0.000 description 5
- 238000004506 ultrasonic cleaning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 239000010963 304 stainless steel Substances 0.000 description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides a light garbage deep separation device which is provided with a garbage feeding and discharging system, a garbage conveying system and a cleaning and screening system. The garbage feeding and discharging system comprises a feeding conveyer belt and a discharging conveyer belt which are arranged at intervals; the cleaning and screening system comprises a cleaning bin, water is stored in the cleaning bin, a feed inlet and a discharge outlet respectively correspond to a feed conveying belt and a discharge conveying belt, an ultrasonic transducer is arranged in a feed area, and a water inlet is arranged in a discharge area. The middle part of the cleaning bin is provided with a longitudinally closed screen separator, and the bottom of the cleaning bin is inclined upwards from the feeding area to the discharging area and is provided with a water outlet; the garbage conveying system comprises a conveying belt and a transmission assembly, wherein the conveying belt is also obliquely arranged and provided with a vertical screen partition plate. According to the utility model, the ultrasonic wave and the flushing flow are utilized to clean the garbage oversize, so that soil components in the garbage oversize can be effectively separated, the disposal quantity of the oversize is reduced, the incineration heat value of the oversize is increased, and the energy consumption is reduced.
Description
Technical Field
The utility model belongs to the technical field of stale garbage screening treatment, in particular relates to a light garbage deep separation device and method, and more particularly relates to a light garbage deep separation device and method for screening light garbage containing plastics, fabrics and about 10% humus.
Background
The garbage incineration power generation has the advantages of high treatment speed, reduction, good effect, good pollution control and high energy utilization. In recent years, the waste incineration power generation gradually replaces landfill and composting treatment, and becomes a realistic choice. At present, a plurality of stale wastes exist in the city, and the oversize products of the stale wastes are mainly light matters such as plastics, fabrics and the like, and the oversize products screened by the prior screening technology are often adhered with soil particles, so that the outward transportation and disposal processes of the oversize products are influenced.
In general, garbage classification is required before garbage incineration, and flammable light garbage such as plastic, cloth and the like in the garbage classification is separated for incineration power generation so as to improve the unit calorific value. The existing garbage screening equipment is difficult to effectively separate soil from light garbage on the screen, the adhesion residual quantity of humus soil in the garbage is about 10%, the treatment cost is increased, and the efficiency of garbage incineration power generation is reduced. Therefore, there is an urgent need for a low-cost, high-efficiency, simple-to-operate device for deep separation of soil components in light garbage.
Disclosure of Invention
The utility model aims at the technical problems, and provides a light garbage deep separation device for further separating light substances such as plastics, cloth and the like in light garbage from humus aiming at the characteristic that the light garbage contains a small amount of humus. In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a light garbage deep separation device, which is used for deep screening light garbage with the grain diameter range of 20-200 mm, which is subjected to metal substance removal by a magnetic separation system and heavy substance removal by a winnowing system, and screening out mixed soil, wherein the device comprises the following components: the garbage feeding and discharging system, the garbage conveying system and the cleaning and screening system.
The garbage feeding and discharging system comprises a feeding conveyer belt and a discharging conveyer belt which are arranged at intervals; the cleaning and screening system comprises a cleaning bin, water is stored in the cleaning bin, a feed inlet and a discharge outlet respectively correspond to the feed conveyer belt and the discharge conveyer belt, an ultrasonic transducer is arranged in a feed area, and a water inlet is arranged in a discharge area; the middle part of the cleaning bin is provided with a longitudinally closed screen separator, and the bottom of the cleaning bin is inclined upwards from the feeding area to the discharging area and is provided with a water outlet; the garbage conveying system comprises a conveying belt and a transmission assembly, wherein the conveying belt is also obliquely arranged and provided with a vertical screen partition plate.
The light garbage is oversize garbage obtained by sieving garbage sequentially through a primary drum sieve, a secondary drum sieve, a magnetic separation device and a winnowing device. The garbage has particle size of 20-200 mm, mainly contains light matters such as plastic, cloth and the like, and is adhered with about 10% humus soil. The utility model separates light substances from humus soil adhered to the light substances in a water washing mode, and improves the incineration heat value.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the system also comprises a control system which at least comprises a control interface and a control circuit, and parameter setting and operation adjustment are carried out on the garbage feeding and discharging system, the garbage conveying system and the cleaning and screening system.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the shell of the cleaning bin has the dimensions of 0.6-1.6 m wide, 4.5-9.0 m long and 1.5-4.0 m high, preferably 0.8-1.2 m wide, 5.0-6.5 m long and 1.5-2.5 m high, and can be adjusted according to the soil adhesion amount of the garbage on-screen materials in the actual use process, so that the cleaning time is prolonged; the ultrasonic transducers are divided into a plurality of groups, the groups are adjusted according to the actual processing capacity, the frequency is 35-55 KHz, and the area is about 2m 2 In the actual use process, the soil adhesion amount of the garbage screen can be adjusted according to the soil adhesion amount of the garbage screen; the screen holes of the middle screen separator are square, and the side length is 0.5-5 cm.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the two sides of the cleaning bin are hollow, and the wall thickness is 8-12 cm; the ultrasonic transducer is arranged in the hollow shell wall of the feed inlet area, the frequency is 20-70 KHz, and the area is 1-5 m 2 。
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the water inlet of the cleaning bin is arranged on the side wall of the discharging area, the water outlet is arranged at the bottom of the feeding area, hydraulic circulation is carried out, and the water flow direction and the garbage conveying direction form opposite flushing.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the length of the conveying belt with the vertical screen separator is 5-7 m, the width is 0.8-1.0 m, the thickness is 1.0m, the inclination is 8-10 degrees, the size of the vertical screen separator is 20-60 cm, the width is 50-70 cm, the screen holes are square, the side length is 0.5-5 cm, and the material is 304 stainless steel.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the transmission assembly comprises two rotating shafts, a rotating chain and a driving motor, and the two rotating shafts and the rotating shaft and the driving motor are connected through the rotating chain.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the conveyer belt with vertical screen separator rotates at 0.2-0.5 m/s, the hydraulic flow of the flushing flow area is 10-40L/s, the residence time of the light garbage in the cleaning bin is 20-40 s, and the adjustment can be carried out according to the actual treatment capacity.
Preferably, the light garbage deep separation device provided by the utility model further has the following technical characteristics: the light garbage contains plastic, fabric and 10% humus soil.
The utility model has the beneficial effects that:
according to the utility model, the light garbage is cleaned by utilizing ultrasonic waves and opposite flushing water flow, so that soil components in the light garbage can be effectively separated, the disposal quantity of the light garbage is reduced, and the incineration heat value of the light garbage is increased.
Structurally, the cleaning and screening system is characterized in that water is stored in a cleaning bin of the cleaning and screening system, an ultrasonic transducer is arranged in a feeding area, and a water inlet is arranged in a discharging area; the middle part of the cleaning bin is provided with a longitudinally closed screen separator, and the bottom of the cleaning bin is inclined upwards from the feeding area to the discharging area and is provided with a water outlet; the garbage conveying system is arranged above the cleaning and screening system and comprises a conveying belt and a transmission assembly, wherein the conveying belt is also obliquely arranged and provided with a vertical screen separator. The ultrasonic transducer disperses light substances and humus adhered to the light substances through ultrasonic vibration; the conveying belt rotates anticlockwise under the drive of the transmission component, and the soil components subjected to ultrasonic separation can be separated from the garbage oversize products along with the movement of water flow and the inertia effect through anticlockwise circulation of the vertical screen separator, so that a continuous separation system is formed.
In addition, the utility model can set corresponding water treatment facilities according to water quality and water quantity to form a closed circulation system. Meanwhile, when the water inlet and the water outlet of the cleaning shell are blocked by the fixed partition plates, the functions can be inverted to perform back flushing.
Drawings
FIG. 1 is a schematic structural view of a light garbage deep separation device of the utility model;
FIG. 2 is a cross-sectional view A-A of the light refuse depth separation device of the present utility model;
FIG. 3 is a B-B sectional view of the light garbage deep separating apparatus of the present utility model.
Detailed Description
The utility model will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model.
Examples
According to fig. 1 to 3, the light garbage deep separation apparatus 100 has a garbage feeding and discharging system 1, a garbage conveying system 2, a cleaning and screening system 3, and a control system 4.
The garbage feeding and discharging system 1 comprises a feeding conveyer belt 11 and a discharging conveyer belt 12 which are arranged at intervals; the garbage conveying system 2 and the cleaning and screening system 3 are arranged between the feeding conveying belt 11 and the discharging conveying belt 12; the control system 4 at least comprises a control interface and a control circuit, and parameter setting and operation adjustment are carried out on the garbage feeding and discharging system 1, the garbage conveying system 2 and the cleaning and screening system 3.
The refuse transport system 2 comprises a conveyor belt 21 with vertical screen partitions, two rotating shafts 22, a rotating chain 23 and a drive motor 24. The length of the conveying belt 21 is 5-7 m, the width is 0.8-1.0 m, the thickness is 1.0m, the conveying belt is inclined upwards from the feeding direction to the discharging direction, and the inclination is 8-10 degrees; the size of the vertical screen separator 21 is 20-60 cm long, 50-70 cm wide, square screen holes with 0.5-5 cm side length and 304 stainless steel. The two rotating shafts 22 and the rotating shaft 22 and the driving motor 24 are connected through a rotating chain 23.
The cleaning and screening system 3 comprises a cleaning bin 31, wherein water is stored in the cleaning bin, and a top plate 33 is arranged above the cleaning bin through a support 32; the feed inlet and the discharge outlet correspond to the feed conveyor belt 11 and the discharge conveyor belt 12, respectively. The cleaning bin feeding area is provided with an ultrasonic transducer 34, the side wall of the discharging area is provided with a water inlet 35, the middle part is provided with a longitudinally closed screen baffle 36, the bottom of the shell is inclined upwards from the feeding area to the discharging area and is provided with a water outlet 37, and an ultrasonic cleaning area and a water flow opposite flushing area are formed inside the cleaning bin.
The shell of the cleaning bin has the size of 0.6-1.6 m wide and 1.6m long4.5-9.0 m, 1.5-4.0 m high, preferably 0.8-1.2 m wide, 5.0-6.5 m long and 1.5-2.5 m high, and can be adjusted according to the soil adhesion amount of the garbage screen material in the actual use process, so that the cleaning time is prolonged. The ultrasonic transducers 34 are multiple groups, the groups are adjusted according to the actual processing capacity, the frequency is 35-55 KHz, and the area is about 2m 2 In the actual use process, the soil adhesion amount of the garbage screen can be adjusted according to the soil adhesion amount of the garbage screen; the screen holes of the middle screen separator are square, and the side length is 0.5-5 cm.
The light garbage in this embodiment is the oversize garbage obtained by sieving the garbage sequentially through a primary drum sieve, a secondary drum sieve, a magnetic separation device and a winnowing device. The garbage has particle size of 20-200 mm, mainly contains light matters such as plastic, cloth and the like, and is adhered with about 10% humus soil. In the embodiment, light substances and humus soil adhered to the light substances are separated in a water washing mode, so that the incineration heat value is improved.
The light garbage adhering to the soil components is conveyed into the cleaning bin 31 by the feeding conveyor belt 11, and along with the rotation of the two rotating shafts 22, the conveyor belt 21 with the vertical screen partition plates 21 rapidly presses the garbage into water in the cleaning bin 31, and is mixed with the water, and is subjected to ultrasonic separation under the action of the ultrasonic transducer 34. Meanwhile, the conveyor belt 21 with the vertical screen separator, the cleaning bin 31 and the airtight screen separator 36 in the cleaning bin 31 form an airtight area, and along with the continuous forward movement of the conveyor belt 21 with the vertical screen separator, the light garbage is carried forward continuously.
The water inlet 35 on the right side of the cleaning bin 31 continuously feeds water in the running process, forms a hedging water flow area with the water discharge hole 37 at the bottom of the cleaning bin 31, carries out convection flushing on light garbage separated from an ultrasonic cleaning area, and strengthens the separation effect of garbage oversize and mud water. Along with the continuous advancing of the conveyer belt 21 with the vertical screen separator, the light garbage passes through the ultrasonic cleaning area and the opposite flushing force area one by one, so that the effect of deep separation of the garbage on the screen is achieved.
Finally, under the action of gravity, the deep separated oversize products are transported out by the discharge conveyor belt 12, and the cleaning wastewater is discharged from the drain hole 37 at the bottom of the cleaning shell and enters the water treatment system for treatment. The water treatment system comprises an adjusting tank, a sedimentation tank, filter pressing equipment and the like, and the clean water after treatment is recycled to the ultrasonic deep separation system to be used as water inflow and forms a circulating system with the ultrasonic deep separation device.
Specific application example
Taking a garbage screening project in Shanghai city as an example, the deep separation device is adopted to carry out deep separation on the light garbage. The main components of the garbage aimed at in the garbage sieving project are construction garbage, household garbage, plant rhizomes, humus soil and the like. The light garbage after sieving treatment contains about 10% of soil components. The whole treatment process flow is as follows:
1. front end screening treatment
The front-end screening treatment process of the project comprises the following steps: primary drum screening, secondary drum screening, magnetic separation device screening and air separation device screening.
(1) Primary roller screening
After the garbage enters a first-stage drum screen from a feeding system, the project garbage is sorted according to the particle size of 200mm as a limit value. Wherein, large materials such as construction waste with the size of more than 200mm are transported away by a material conveyor and a loading machine, and the materials with the size of less than 200mm enter a next-step secondary roller sorting system. During conveying, manual sorting is arranged, so that the garbage which is not separated by the machines such as glass, rubber, wood and the like and has a certain recycling value is sorted.
(2) Two-stage roller screening
After entering a secondary drum screen, sorting is carried out by taking 20mm as a limit value, the secondary drum screen is divided into two parts of less than 20mm and 20-200 mm, most of humus soil below 20mm is transported and treated outside by an earthwork vehicle, and the rest part enters a next sorting system.
(3) Screening by magnetic separation device
After entering the magnetic separation device, metal substances in the 20-200 mm part are screened out through magnetic force for recycling, and the rest part enters the next step of separation system.
(4) Winnowing screening
After the rest garbage enters the winnowing system, light substances such as plastics, cloth and the like in the garbage are separated from heavy materials by utilizing airflow. And carrying out outward treatment on the separated heavy matters, and allowing the oversize matters (light garbage) to enter an ultrasonic deep separation device for deep separation.
2. Deep separation process
The oversize material from the screening process often still contains about 10% humus, for which purpose a deep separation device as described in example 1 is added. The oversize material enters a depth separation device with an ultrasonic cleaning area and a hedging cleaning area along with a feeding conveyer belt to be subjected to depth separation, and is transported out by a discharging system after ultrasonic cleaning and convection flushing. And (3) draining water from the screen materials subjected to deep separation, performing compression treatment through a compression system, and finally packaging and transporting the screen materials outwards to perform incineration power generation.
The parameters of the depth separation device used in this project are as follows:
(1) In the cleaning and screening system, the shell of the cleaning bin is 1.0m wide and 6.3m long, 2.0m high and has a bottom inclination of 5 degrees; the middle part is provided with a screen separator, and the screen holes are about 2cm multiplied by 2cm; the two sides of the shell are hollow, the thickness is about 10cm, 36 ultrasonic transducers are arranged in the hollow shell walls at the two sides of the feed inlet area, the frequency is 35KHz, and the area is about 2m 2 The method comprises the steps of carrying out a first treatment on the surface of the The water inflow of the water inlet at the right side of the cleaning bin is about 20L/s;
(2) The refuse transport system is about 5.6m long, about 0.8m wide, about 1.0m high and overall inclination of 8 °. The conveyor belt speed was about 0.3m/s during operation of the apparatus, with the specific value varying with the amount of soil fed to the screen. The conveyer belt is provided with a vertical screen separator, the screen holes are about 2cm multiplied by 2cm, the size is about 45cm, the width is about 75cm, and the material is 304 stainless steel.
3. Water treatment process
And combining the soil component properties of the project, and adopting a water treatment process of 'regulating reservoir + sloping plate sedimentation tank + plate frame filter pressing' to carry out mud-water separation. And (3) returning water from the inclined plate sedimentation tank to the water inlet of the ultrasonic deep separation device, and carrying out outward transportation treatment by taking mud cakes subjected to plate and frame filter pressing as hazardous wastes.
4. Application results
The soil content in the oversize material separated by the ultrasonic deep separation device is lower than 1%, and the separation efficiency is more than 90%. The device occupies about 1 area5m 2 Can meet 200m in the running process 3 Per h of oversize product throughput, operating power about 40kw.
While the utility model has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes and substitutions may be made therein without departing from the spirit of the utility model and that these changes and substitutions are intended to be included within the scope of the utility model as defined by the appended claims.
Claims (9)
1. The utility model provides a light rubbish degree of depth separator which characterized in that carries out degree of depth screening to the light rubbish that particle diameter scope 20 ~ 200mm, through the metal removal of magnetic separation system and selection by winnowing system remove heavy material after, with the soil screening that mixes wherein, has: a garbage feeding and discharging system, a garbage conveying system and a cleaning and screening system,
wherein the garbage feeding and discharging system comprises a feeding conveyer belt and a discharging conveyer belt which are arranged at intervals,
the cleaning and screening system comprises a cleaning bin, water is stored in the cleaning bin, a feed inlet and a discharge outlet respectively correspond to the feed conveyer belt and the discharge conveyer belt, an ultrasonic transducer is arranged in a feed area, and a water inlet is arranged in a discharge area; the middle part of the cleaning bin is provided with a longitudinally closed screen separator, the bottom part of the cleaning bin is inclined upwards from the feeding area to the discharging area and is provided with a water outlet,
the garbage conveying system comprises a conveying belt and a transmission assembly, wherein the conveying belt is also obliquely arranged and provided with a vertical screen separator.
2. The light waste depth separation device of claim 1, further comprising a control system including at least a control interface and control circuitry for parameter setting and operational adjustment of the waste inlet and outlet system, the waste transport system, and the cleaning and screening system.
3. The light refuse depth separation device according to claim 1, characterized in that:
wherein the shell of the cleaning bin has the size of 0.6-1.6 m wide, 4.5-9.0 m long and 1.5-4.0 m high;
the ultrasonic transducers are in a plurality of groups, the sieve holes of the middle screen separator are square, and the side length is 0.5-5 cm.
4. The light refuse depth separation device according to claim 1, characterized in that:
wherein, the two sides of the cleaning bin are hollow, and the wall thickness is 8-12 cm; the ultrasonic transducer is arranged in the hollow shell wall of the feed inlet area, the frequency is 20-70 KHz, and the area is 1-5 m 2 。
5. The light refuse depth separation device according to claim 1, characterized in that:
the water inlet of the cleaning bin is arranged on the side wall of the discharging area, the water outlet is arranged at the bottom of the feeding area, and the water flow direction and the conveying direction of the garbage form opposite flushing.
6. The light refuse depth separation device according to claim 1, characterized in that:
wherein, the length of the conveyer belt with the vertical screen separator is 5-7 m, the width is 0.8-1.0 m, the thickness is 1.0m, the gradient is 8-10 degrees, the size of the vertical screen separator is 20-60 cm long, the width is 50-70 cm, the screen holes are square, and the side length is 0.5-5 cm.
7. The light refuse depth separation device according to claim 1, characterized in that:
the transmission assembly comprises two rotating shafts, a rotating chain and a driving motor, and the two rotating shafts and the rotating shaft and the driving motor are connected through the rotating chain.
8. The light refuse deep separation device according to claim 5, characterized in that:
wherein, the conveyer belt with the vertical screen separator rotates at a speed of 0.2-0.5 m/s, the flow rate of the opposite flushing flow area is 10-40L/s, and the residence time of the light garbage in the cleaning bin is 20-40 s.
9. The light refuse depth separation device according to claim 1, characterized in that:
wherein the light garbage contains plastics, fabrics and 10% humus soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202223134056.5U CN219631563U (en) | 2022-11-24 | 2022-11-24 | Light garbage deep separation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223134056.5U CN219631563U (en) | 2022-11-24 | 2022-11-24 | Light garbage deep separation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118143031A (en) * | 2024-05-10 | 2024-06-07 | 北京高能时代环境技术股份有限公司 | Resource utilization method for light matters in stock garbage screening |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118143031A (en) * | 2024-05-10 | 2024-06-07 | 北京高能时代环境技术股份有限公司 | Resource utilization method for light matters in stock garbage screening |
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