CN211938369U - Ton package and landfill of soluble waste salt - Google Patents
Ton package and landfill of soluble waste salt Download PDFInfo
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- CN211938369U CN211938369U CN201922489392.3U CN201922489392U CN211938369U CN 211938369 U CN211938369 U CN 211938369U CN 201922489392 U CN201922489392 U CN 201922489392U CN 211938369 U CN211938369 U CN 211938369U
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Abstract
The utility model discloses a ton package and landfill of soluble waste salt, wherein, the ton package of soluble waste salt is in including the parcel material layer and wrapped up the intraformational soluble waste salt compounding of parcel material, the parcel material layer is including first non-woven fabrics layer, HDPE rete and the non-woven fabrics layer of second that stacks gradually the setting. The soluble waste salt mixed material consists of soluble waste salt, cement and river sand, and the mass ratio of the soluble waste salt to the cement to the river sand is 1:1: 0.25. The utility model discloses a wrapping material can not take place incompatibility reaction with soluble waste salt. The HDPE film has excellent corrosion resistance, electrical property, moisture resistance, leakage resistance and impact resistance, high tensile strength, good heat resistance, cold resistance and chemical stability, and can resist corrosion of acid, alkali, organic solvent and the like.
Description
Technical Field
The utility model relates to a hazardous waste handles technical field, especially relates to a ton package and landfill of soluble waste salt.
Background
With the rapid development of petrochemical, pharmaceutical, pesticide and fine production industries and the rapid increase of the production scale thereof, the scale of the waste generated along with the development is increasingly large. Among them, soluble industrial waste salt is one of the main pollution wastes generated by these industries. The main components of the soluble waste salt are soluble salts such as sodium chloride and sodium sulfate. The discharge of large amounts of soluble waste salts can have a serious adverse effect on the environment.
At present, the treatment mode of soluble waste salt in the industry is generally a cement solidification mode, and the soluble waste salt treated by the method can be dissolved when meeting rainfall in the atmosphere, so that pollutants can completely enter a leachate treatment system.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects and deficiencies existing in the prior art, the utility model aims to provide a ton package and a landfill site of soluble waste salt.
In order to realize the purpose, the utility model discloses the technical scheme who takes includes following two aspects:
in a first aspect, the utility model provides a soluble waste salt ton package, it includes the parcel material layer and is wrapped up in the intraformational soluble waste salt compounding of parcel material, the parcel material layer is including the first non-woven fabrics layer, HDPE rete and the second non-woven fabrics layer that stack gradually the setting.
The utility model discloses a wrapping material can not take place incompatibility reaction with soluble waste salt. The HDPE film (high-density polyethylene film) has excellent corrosion resistance, electrical property, moisture resistance, leakage resistance and impact resistance, high tensile strength, good heat resistance, cold resistance and chemical stability, and can resist corrosion of acid, alkali, organic solvent and the like.
The first non-woven fabric layer and the second non-woven fabric layer mainly play a role in protecting the HDPE film layer, so that the wrapping material layer achieves a good sealing and leakage-proof effect, the strength and toughness are good, the stability and weather resistance of the ton bag are improved, the ton bag is not easy to damage even if being subjected to landfill pressure, deformation and the like in the landfill process, the ton bag is not softened, embrittled or increased in permeability due to temperature change, and the waste salt of the inner wrapping can be well prevented from leaking to pollute soil and underground water.
Preferably, the soluble waste salt mixture consists of soluble waste salt, cement and river sand, and the mass ratio of the soluble waste salt to the cement to the river sand is 1:1: 0.25. The utility model discloses mix the back with cement and river sand and soluble waste salt and carry out the landfill to it again and handle, cement and river sand can play the solidification to soluble waste salt, further prevent its outside seepage. The utility model discloses through the experiment discovery, when soluble useless salt, cement and river sand mix with above-mentioned ratio, can carry out under the condition of stable solidification to soluble useless salt, exert the landfill volume of soluble useless salt to the biggest.
Preferably, the first nonwoven fabric layer and the second nonwoven fabric layer have a density of 800g/m2. The density of the nonwoven fabric is greater than that of the nonwoven fabric, and 800g/m2The non-woven fabric has excellent wear resistance, can better protect the HDPE film, and improves the stability of the ton bag.
Preferably, the HDPE film layer has a thickness of 2 mm. The thickness of the HDPE film has a significant effect on its antioxidant consumption, with thicker geomembranes having longer antioxidant depletion times. And the HDPE film with the thickness of 2mm can achieve the expected effect, so that the ton bag has higher stability, and the landfill cost can be controlled in a reasonable range.
Preferably, the HDPE film layer is made of a double-matte HDPE film. The dual matte HDPE films have excellent temperature suitability, weldability, weatherability, environmental stress crack resistance, and puncture resistance.
Preferably, the sealing of the first nonwoven fabric layer and the second nonwoven fabric layer is sewn by a hot air gun. The non-woven fabric is sewn by the hot air gun, so that the sealing position has higher stability and is not easy to crack.
Preferably, the sealing position of the HDPE film layer is welded by an extrusion welding machine or a hot melting welding machine. The sealing position of the HDPE film layer is welded by adopting the two modes, so that the sealing position has higher stability and is not easy to crack.
A second aspect, the utility model provides a soluble waste salt landfill, it includes the landfill reservoir area, be equipped with the dyke around the landfill reservoir area, be equipped with the perpendicular prevention of seepage curtain of setting along its axis on the dyke, be equipped with a plurality of landfill district in the landfill reservoir area, it is adjacent be equipped with the embankment between the landfill district, the basal layer has been laid to the bottom in landfill district, be equipped with a plurality of layers of soluble waste salt landfill layer on the basal layer and fill in the loam layer in the landfill district, soluble waste salt landfill layer is by a plurality of soluble waste salt ton package is constituteed.
The construction method of the vertical impervious curtain comprises the following steps: and pouring cement slurry on the set path by using high pressure so as to form a waterproof curtain around the dike. The vertical impervious curtain can effectively reduce the quantity of underground water entering the landfill reservoir area, so that the underground water level of the landfill reservoir area is easier to control, and the landfill site meets the technical standard of a safe landfill site.
Preferably, the substrate layer consists of a gravel layer and a non-woven geotextile layer arranged on the surface of the gravel layer. Preferably, the thickness of the crushed stone layer is 400mm, and the density of the non-woven geotextile layer is 300g/m2. Preferably, the compacted density of the crushed stone layer is more than or equal to 1.6t/m3. The rubble layer has the filtering action, can dredge the infiltration that infiltrates the reservoir area better, prevents that the infiltration from gathering on the landfill district. The non-woven geotextile layer has a protection effectAnd the abrasion of the soluble waste salt ton coating gravel layer at the bottom layer is prevented.
Furthermore, a percolate collecting and draining system and a percolate adjusting tank are also arranged in the landfill area.
Preferably, the percolate collecting and draining system comprises a main collecting blind ditch and a secondary collecting blind ditch which are embedded on the gravel layer of the substrate layer, and a percolate collecting well connected with the main collecting blind ditch. Preferably, the main collecting blind ditches are arranged on the main ridge line of the basal layer, the secondary collecting blind ditches are vertically connected with the main collecting blind ditches, and the secondary collecting blind ditches are arranged at intervals. Preferably, a first collecting perforated pipe is arranged in the collecting main blind ditch, and a second collecting perforated pipe is arranged in the collecting secondary blind ditch. Illustratively, the first collection perforated pipe may be a De315HDPE pipe and the second collection perforated pipe may be a DN200HDPE pipe. In the leachate collection and drainage guide system, leachate collected by the collection blind drain is lifted to a leachate regulating reservoir through a lift pump after being collected to a leachate collection well, and finally is conveyed to a wastewater treatment workshop for treatment.
Preferably, HDPE geomembranes are laid on the bottom and the wall of the percolate adjusting tank. Preferably, the HDPE geomembrane has a thickness of 2.0 mm.
Preferably, the distance between adjacent soluble waste salt filling layers is more than or equal to 5 m. Most preferably, the spacing between adjacent said soluble waste salt buried layers is 5 m.
Preferably, the distance between the soluble waste salt filling layer positioned on the uppermost layer and the upper surface of the soil layer is more than or equal to 6 m. Most preferably, the distance between the soluble waste salt filling layer positioned at the uppermost layer and the upper surface of the soil layer is 6 m.
Preferably, the distance between adjacent ton bags of the soluble waste salt in the same layer is more than or equal to 4 m. Most preferably, the distance between adjacent ton bales of soluble waste salt in the same layer is 4 m.
Preferably, the distance between the soluble waste salt ton bag positioned at the outermost periphery and the inner side wall of the landfill area is more than or equal to 4 m. Most preferably, the distance between the outermost ton of soluble waste salt and the inner side wall of the landfill is 4 m.
Preferably, the top of the mud layer is also provided with a field sealing system, and the field sealing system comprises an exhaust layer, a surface composite lining layer, a surface water collecting and discharging layer and a vegetation layer which are sequentially arranged from bottom to top.
Preferably, the exhaust layer comprises a porous material layer arranged above the mud layer and a gas delivery pipe arranged in the porous material layer. Preferably, the thickness of the porous material layer is more than or equal to 30cm, the porous material layer is formed by coarse-grained porous materials with the grain size of 25-50 mm, and the permeability coefficient of the porous material layer is more than 1 x 10-2cm/s. Preferably, the gas delivery pipe comprises a gas collecting horizontal pipe and a gas collecting vertical pipe, wherein the gas collecting horizontal pipe is horizontally embedded in the porous material layer, and the gas collecting vertical pipe is vertically arranged. One end of the gas collecting vertical pipe is connected with the gas collecting horizontal pipe, and the other end of the gas collecting vertical pipe extends out of the vegetation cover. Preferably, the pipe wall of the gas collecting transverse pipe is uniformly distributed with through holes, and the outside of the gas collecting transverse pipe is wrapped with non-woven fabrics. The exhaust layer is used for exhausting internal gas in time and reducing internal gas pressure.
Preferably, the surface composite liner comprises a geomembrane layer located at the upper layer and a compacted clay layer located at the lower layer. Preferably, the thickness of the geomembrane layer is 1.5mm, and the permeability coefficient is less than or equal to 1.0 multiplied by 10-12cm/s, the geomembrane layer is formed by a high density polyethylene geomembrane. Preferably, the thickness of the compacted clay layer is more than or equal to 60 cm.
Preferably, the surface water collecting and draining layer is formed of pebbles having a thickness of 30 cm. The surface water collecting and discharging layer can prevent surface water from flowing into the ton bag wrapped with soluble waste salt and the percolate collecting and guiding system, thereby prolonging the stability of the ton bag and reducing the work load of the percolate collecting and guiding system.
Preferably, the thickness of the vegetation layer is more than or equal to 60 cm. By planting and planting plants on the vegetation layer, the surface composite lining layer can be effectively prevented from being eroded and damaged due to water and soil loss, the landfill can be kept attractive, and the ecological system function of the site is recovered.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a mode of the flexible parcel landfill of HDPE membrane carries out safe landfill to soluble waste salt, and the soluble waste salt ton package of design has excellent sealed leak protection effect to and better intensity and toughness, can prevent for a long time that inside soluble waste salt from leaking outward, reduce the pollution of soil and groundwater, even receive landfill pressure, deformation etc. also difficult emergence damage at the landfill in-process, can not soften because of temperature variation, embrittlement or permeability increase etc.. Additionally, the utility model discloses a landfill can exert the safe landfill volume of soluble waste salt to the biggest, and safe landfill is with low costs, and is equipped with safe distance between each ton package and the landfill layer, even local ton package takes place waste salt to leak, can not cause the expansion of pollution yet, and the security is high, and the prevention of seepage and the mediation drainage performance of landfill are good, can effectively prevent to gather groundwater in the landfill, further ensure the stability of landfill ton package.
Drawings
FIG. 1 is a schematic structural diagram of a soluble waste salt ton bag of the present invention;
FIG. 2 is a schematic top view of a soluble waste salt landfill according to the present invention;
fig. 3 is a schematic diagram of a longitudinal section structure of the landfill region of the present invention;
fig. 4 is the structural schematic diagram of the leachate collection drainage guide system of the present invention.
In the figure, the device comprises a soluble waste salt ton bag 1, a wrapping material layer 2, a soluble waste salt mixed material 3, a first non-woven fabric layer 4, an HDPE film layer 5, a second non-woven fabric layer 6, a landfill area 7, a dike 8, a vertical anti-seepage curtain 9, a landfill area 10, a separation dike 11, a base layer 12, a soluble waste salt landfill layer 13, a mud layer 14, a rubble layer 15, a non-woven geotextile layer 16, a percolate collecting and draining system 17, a collecting main blind ditch 18, a collecting secondary blind ditch 19, a percolate collecting well 20, an exhaust layer 21, a surface composite lining layer 22, a surface water collecting and draining layer 23, a vegetation layer 24, a porous material layer 25, a gas collecting transverse pipe 27, a gas collecting vertical pipe 28, a geomembrane layer 29 and a compacted clay layer 30.
Detailed Description
To better illustrate the objects, technical solutions and advantages of the present invention, the present invention is further illustrated by the following examples. It is obvious that the following examples are only a part of the embodiments of the present invention, and not all of them. It should be understood that the embodiments of the present invention are only used for illustrating the technical effects of the present invention, and are not used for limiting the protection scope of the present invention.
Example 1
This example provides a soluble waste salt ton bag, as shown in fig. 1, the soluble waste salt ton bag 1 is composed of a wrapping material layer 2 and a soluble waste salt mixed material 3 wrapped in the wrapping material layer 2. The soluble waste salt mixed material 3 consists of soluble waste salt, cement and river sand, and the mass ratio of the soluble waste salt to the cement to the river sand is 1:1: 0.25. The wrapping material layer 2 comprises a first non-woven fabric layer 4, an HDPE film layer 5 and a second non-woven fabric layer 6 which are sequentially stacked. The first nonwoven fabric layer 4 and the second nonwoven fabric layer 6 had a density of 800g/m2The non-woven fabric with the density has excellent wear resistance, can better protect an HDPE film, and improves the stability of the ton bag. The thickness of the HDPE film layer 5 is 2mm, the HDPE film with the thickness can achieve the expected effect, so that the ton bag has higher stability, and the landfill cost can be controlled within a reasonable range. The HDPE film layer 5 is made of a double-matte-side HDPE film, and has excellent temperature adaptability, weldability, weather resistance, environmental stress cracking resistance, and puncture resistance.
Secondly, the sealing parts of the first non-woven fabric layer 4 and the second non-woven fabric layer 6 are sewn by a hot air gun, so that the sealing parts have high stability and are not easy to crack. The sealing position of the HDPE film layer 5 is welded by an extrusion welding machine or a hot melting welding machine, so that the sealing position has higher stability and is not easy to crack.
The wrapping material of this example did not react incompatibility with the soluble waste salt. The HDPE film (high-density polyethylene film) has excellent corrosion resistance, electrical property, moisture resistance, leakage resistance and impact resistance, high tensile strength, good heat resistance, cold resistance and chemical stability, and can resist corrosion of acid, alkali, organic solvent and the like. The first non-woven fabric layer and the second non-woven fabric layer mainly play a role in protecting the HDPE film layer, so that the wrapping material layer achieves a good sealing and leakage-proof effect, the strength and toughness are good, the stability and weather resistance of the ton bag are improved, the ton bag is not easy to damage even if being subjected to landfill pressure, deformation and the like in the landfill process, the ton bag is not softened, embrittled or increased in permeability due to temperature change, and the waste salt of the inner wrapping can be well prevented from leaking to pollute soil and underground water.
Example 2
In this embodiment, as shown in fig. 2 to 4, the soluble waste salt landfill includes a landfill area 7, a dike 8 is disposed around the landfill area 7, and a vertical impermeable curtain 9 is disposed on the dike 8 along an axis thereof. A plurality of landfill areas 10 are arranged in the landfill reservoir area 7, and a bank 11 is arranged between the adjacent landfill areas 10. The bottom of the landfill area 10 is paved with a substrate layer 12, the substrate layer 12 is provided with a plurality of soluble waste salt landfill layers 13 and a soil layer 14 filled in the landfill area 10, and the soluble waste salt landfill layers 13 are composed of a plurality of soluble waste salt ton bags 1 described in embodiment 1.
In this embodiment, the distance a between adjacent waste soluble salt filling layers 13 is 5m or more, preferably 5 m. The distance b between the soluble waste salt filling layer 13 positioned at the uppermost layer and the upper surface of the soil layer 14 is more than or equal to 6m, and is preferably 6 m. The distance c between adjacent soluble waste salt ton bags 1 on the same layer is more than or equal to 4m, and is preferably 4 m. The distance d between the soluble waste salt ton bag 1 positioned at the outermost periphery and the inner side wall of the landfill area 10 is more than or equal to 4m, and is preferably 4 m.
In this embodiment, the substrate layer 12 is composed of a crushed stone layer 15 and a nonwoven geotextile layer 16 provided on the surface of the crushed stone layer 15. The thickness of the crushed stone layer 15 is 400mm, and the density of the non-woven geotextile layer 16 is 300g/m2The compacted density of the crushed stone layer 15 is more than or equal to 1.6t/m3。
In this embodiment, a leachate collection and drainage system 17 and a leachate conditioning tank are further disposed in the landfill area 7. Wherein, the percolate collecting and guiding and draining system 17 comprises a main collecting blind ditch 18 and a secondary collecting blind ditch 19 which are embedded on the gravel layer 15 of the substrate layer 12, and a percolate collecting well 20 connected with the main collecting blind ditch 18. The main collecting blind ditches 18 are arranged on the main ridge line of the basal layer 12, the secondary collecting blind ditches 19 are vertically connected with the main collecting blind ditches 18, and the secondary collecting blind ditches 19 are arranged at intervals. A first collecting perforated pipe is arranged in the collecting main blind ditch 18, and a second collecting perforated pipe is arranged in the collecting secondary blind ditch. Illustratively, the first collection perforated tube may be a De315HDPE tube and the second collection perforated tube may be a DN200HDPE tube. In the leachate collection and drainage guide system, leachate collected by the collection blind drain is lifted to a leachate regulating reservoir through a lift pump after being collected to a leachate collection well, and finally is conveyed to a wastewater treatment workshop for treatment. In addition, HDPE geomembranes with the thickness of 2.0mm are laid on the bottom and the wall of the percolate adjusting tank. The percolate adjusting tank can be built in the reservoir area or near the reservoir area, depending on the field situation.
In this embodiment, the top of dirt bed still is equipped with the system of closing a yard, and this system of closing a yard includes exhaust layer 21, surperficial compound lining 22, surface water collection drainage blanket 23 and the vegetation layer 24 that sets gradually from bottom to top.
Specifically, the exhaust layer 21 includes a porous material layer 25 provided above the earth layer, and a gas delivery pipe provided in the porous material layer 25. The thickness of the porous material layer is more than or equal to 30cm, the porous material layer 25 is formed by coarse-grained porous materials with the grain size of 25-50 mm, and the permeability coefficient of the porous material layer 25 is more than 1 multiplied by 10-2cm/s. The gas delivery pipe comprises a horizontal gas collecting pipe 27 which is horizontally embedded in the porous material layer and a vertical gas collecting standpipe 28 which is vertically arranged. One end of the gas collection standpipe 28 is connected to the gas collection cross-tube 27, and the other end of the gas collection standpipe 28 extends out of the vegetation layer 24. Through holes are uniformly distributed on the pipe wall of the transverse gas collecting pipe 27, and non-woven fabrics are wrapped outside the transverse gas collecting pipe 27. The exhaust layer 21 functions to exhaust the internal gas in time, and reduce the internal gas pressure.
Specifically, the surface composite liner 22 includes a geomembrane layer 29 on an upper layer and a compacted clay layer 30 on a lower layer. The thickness of the geomembrane layer 29 is 1.5mm, and the permeability coefficient is less than or equal to 1.0 multiplied by 10-12cm/s, geomembrane layer 29 is formed of a high density polyethylene geomembrane. Thickness of compacted clay layer 30Is more than or equal to 60 cm.
Specifically, the surface water collecting and draining layer 23 is formed of pebbles having a thickness of 30 cm. The surface water collecting and discharging layer 23 can prevent surface water from flowing into the ton bag wrapped with soluble waste salt and the percolate collecting and guiding system, thereby prolonging the stability of the ton bag and reducing the workload of the percolate collecting and guiding system.
Specifically, the thickness of the vegetable layer 24 is not less than 60 cm. By planting and planting plants on the vegetation layer 24, the surface composite lining 22 can be effectively prevented from being eroded and damaged due to water and soil loss, the landfill can be kept beautiful, and the ecological system function of the site can be recovered.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The ton package of soluble waste salt is characterized by comprising a wrapping material layer and a soluble waste salt mixed material wrapped in the wrapping material layer, wherein the wrapping material layer comprises a first non-woven fabric layer, an HDPE (high-density polyethylene) film layer and a second non-woven fabric layer which are sequentially stacked.
2. The ton bag of soluble waste salt of claim 1, wherein the first nonwoven layer and the second nonwoven layer have a density of 800g/m2The thickness of the HDPE film layer is 2mm, and the HDPE film layer is made of double-rough-surface HDPE films.
3. The ton bag of soluble waste salt of claim 1, wherein the sealing of the first nonwoven fabric layer and the second nonwoven fabric layer is sewn by a hot air gun, and the sealing of the HDPE film layer is welded by an extrusion welding machine or a hot melting welding machine.
4. A landfill site for soluble waste salt is characterized by comprising a landfill area, wherein enclosing dikes are arranged around the landfill area, vertical anti-seepage curtains arranged along the axis of the enclosing dikes are arranged on the enclosing dikes, a plurality of landfill areas are arranged in the landfill area, a separation dike is arranged between the adjacent landfill areas, a base layer is paved and filled at the bottom of each landfill area, a plurality of soluble waste salt landfill layers and a mud layer filled in each landfill area are arranged on the base layer, and each soluble waste salt landfill layer is composed of a plurality of ton packages of the soluble waste salt according to any one of claims 1 to 3.
5. The landfill site for soluble waste salt according to claim 4, wherein the distance between adjacent landfill layers for soluble waste salt is not less than 5m, the distance between the landfill layer for soluble waste salt positioned at the uppermost layer and the upper surface of the soil layer is not less than 6m, the distance between the ton bales for soluble waste salt positioned at the same layer is not less than 4m, and the distance between the ton bales for soluble waste salt positioned at the outermost periphery and the inner side wall of the landfill area is not less than 4 m.
6. The landfill site of soluble waste salt of claim 4, wherein the substrate layer is composed of a crushed stone layer and a non-woven geotextile layer provided on a surface of the crushed stone layer.
7. The landfill site of soluble waste salt as claimed in claim 4, wherein the landfill area is further provided with a percolate collecting and draining system and a percolate regulating pond, the percolate collecting and draining system comprises a collecting main blind ditch and a collecting secondary blind ditch embedded on the substrate layer, and a percolate collecting well connected with the collecting main blind ditch.
8. The landfill of soluble waste salt of claim 7, wherein the leachate conditioning tank has HDPE geomembranes laid on the bottom and wall of the tank.
9. The landfill of soluble waste salt as claimed in claim 4, wherein a sealing system is further provided above the soil layer, the sealing system comprises an exhaust layer, a surface composite lining layer, a surface water collecting and discharging layer and a vegetation layer which are sequentially provided from bottom to top; the exhaust layer comprises a porous material layer arranged above the mud layer and a gas outlet pipe arranged in the porous material layer, and the gas outlet pipe comprises a gas collecting transverse pipe horizontally embedded in the porous material layer and a gas collecting vertical pipe vertically arranged; one end of the gas collecting vertical pipe is connected with the gas collecting transverse pipe, and the other end of the gas collecting vertical pipe extends out of the vegetation cover; the surface composite lining layer comprises a geomembrane layer positioned on the upper layer and a compacted clay layer positioned on the lower layer; the surface water collecting and discharging layer is formed of pebbles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922489392.3U CN211938369U (en) | 2019-12-31 | 2019-12-31 | Ton package and landfill of soluble waste salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922489392.3U CN211938369U (en) | 2019-12-31 | 2019-12-31 | Ton package and landfill of soluble waste salt |
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| Publication Number | Publication Date |
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| CN211938369U true CN211938369U (en) | 2020-11-17 |
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| CN201922489392.3U Active CN211938369U (en) | 2019-12-31 | 2019-12-31 | Ton package and landfill of soluble waste salt |
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| CN (1) | CN211938369U (en) |
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