CN219950786U - System for be used for handling stone material washing wastewater - Google Patents
System for be used for handling stone material washing wastewater Download PDFInfo
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- CN219950786U CN219950786U CN202321503503.1U CN202321503503U CN219950786U CN 219950786 U CN219950786 U CN 219950786U CN 202321503503 U CN202321503503 U CN 202321503503U CN 219950786 U CN219950786 U CN 219950786U
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- cleaning wastewater
- stone cleaning
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- 239000002351 wastewater Substances 0.000 title claims abstract description 64
- 239000004575 stone Substances 0.000 title claims abstract description 33
- 238000005406 washing Methods 0.000 title description 11
- 239000000463 material Substances 0.000 title description 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000010802 sludge Substances 0.000 claims abstract description 47
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 33
- 238000004140 cleaning Methods 0.000 claims abstract description 32
- 238000004062 sedimentation Methods 0.000 claims abstract description 30
- 238000005345 coagulation Methods 0.000 claims abstract description 28
- 230000015271 coagulation Effects 0.000 claims abstract description 28
- 238000005189 flocculation Methods 0.000 claims abstract description 27
- 230000016615 flocculation Effects 0.000 claims abstract description 27
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 230000001112 coagulating effect Effects 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 55
- 238000003756 stirring Methods 0.000 claims description 25
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 6
- 229940079593 drug Drugs 0.000 claims description 5
- 230000003472 neutralizing effect Effects 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000003311 flocculating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000701 coagulant Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 5
- 208000005156 Dehydration Diseases 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses a system for treating stone cleaning wastewater, which comprises an adjusting tank for adjusting the sewage water quantity and the uniform water quality, wherein an adjusting tank lifting pump is arranged in the adjusting tank, and a water outlet hole of the adjusting tank lifting pump is sequentially connected with a neutralization tank, a coagulation reaction tank, a flocculation reaction tank and an inclined tube sedimentation tank; the sludge outlet of the inclined tube sedimentation tank is communicated with the sludge tank, and the water outlet of the inclined tube sedimentation tank is sequentially communicated with the middle water tank and the multi-medium filter. The beneficial effects are that: the utility model is a system which has obvious treatment effect and convenient operation management and is specially used for deeply treating stone cleaning wastewater; in the treatment of stone cleaning wastewater, a neutralization reaction, a coagulating sedimentation system and a filtering system are combined, so that the reasonable and feasible cost and operation management cost are ensured, the effluent quality can be ensured to reach the standard for reuse, the pollution to the ecological environment is reduced, and meanwhile, the water resource is greatly saved.
Description
Technical Field
The utility model relates to the field of stone cleaning wastewater treatment, in particular to a system for treating stone cleaning wastewater.
Background
Acid cleaning is a common production process in the stone processing industry, and a water washing and cleaning process is usually required after the acid cleaning. The water quantity of the washing wastewater is large, and the wastewater is generally required to be treated and then reused in the washing process, so that the purpose of saving water resources is achieved.
The stone cleaning wastewater mainly comes from a washing working section, and the main pollution items in the wastewater are as follows: suspensions, acids, color, etc.
The stone cleaning wastewater is mainly characterized by larger fluctuation of water quality and water quantity, lower pH value and high chromaticity and suspended matters. At present, the method adopted for the wastewater mainly comprises coagulating sedimentation and the like, and the method can remove pollutants in the stone cleaning wastewater, but has the defects of higher investment, unstable process operation and poor treatment effect, and is difficult to reach the recycling standard and recycle the wastewater to a washing section.
Therefore, it has been a considerable problem to provide a system for treating stone cleaning wastewater.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a system which is economical and applicable, has obvious treatment effect and is specially used for treating stone cleaning wastewater, the wastewater is treated by adopting a combined process of neutralization, coagulating sedimentation and multi-medium filtration, the effluent water of the stone cleaning wastewater can reach the recycling standard and be recycled for a water washing section, the pollution of the wastewater to the ecological environment can be eliminated, the water resource can be recycled, and the aim of saving water is fulfilled.
The purpose of the utility model is realized in the following way:
the utility model provides a system for treating stone cleaning wastewater, which comprises a regulating tank for regulating the water quantity of sewage and uniformly controlling the water quality, wherein a regulating tank lifting pump is arranged in the regulating tank, and water outlets of the regulating tank lifting pump are sequentially connected with a neutralization tank for neutralizing the water quality, a coagulation reaction tank for coagulating sewage, a flocculation reaction tank for flocculating sewage and a inclined tube sedimentation tank for separating sediments, wherein the inclined tube sedimentation tank is used for separating sewage into sewage and sludge;
the sludge outlet of the inclined tube sedimentation tank is communicated with the sludge tank, and the water outlet of the inclined tube sedimentation tank is sequentially communicated with the middle water tank and the multi-medium filter for recycling water resources.
In some embodiments, the regulating tank and the neutralization tank are respectively provided with an online pH meter of the regulating tank and an online pH meter of the neutralization tank, which are used for monitoring the pH of the wastewater in real time.
In some embodiments, a submersible mixer is disposed within the conditioning tank.
In some embodiments, the neutralization tank comprises a NaOH dosing system and a neutralization tank stirring reaction system for mixing liquid in the neutralization tank, wherein a NaOH dosing pump is arranged in the NaOH dosing system, and a medicine outlet end of the NaOH dosing pump is communicated with the neutralization tank through a pipeline.
In some embodiments, the coagulation reaction tank comprises a PAC dosing system and a coagulation reaction tank stirring reaction system for mixing liquid in the coagulation reaction tank, wherein a PAC dosing pump is arranged in the PAC dosing system, and a drug outlet end of the PAC dosing pump is communicated with the coagulation reaction tank through a pipeline.
In some embodiments, the flocculation reaction tank comprises a PAM dosing system and a flocculation reaction tank stirring reaction system for accelerating flocculation reaction inside the flocculation reaction tank, wherein a PAM dosing pump is arranged in the PAM dosing system, and a drug outlet end of the PAM dosing pump is communicated with the flocculation reaction tank through a pipeline.
In some embodiments, a chute packing for separating sediment is arranged in the chute sedimentation tank.
In some embodiments, the waste water is transferred between the intermediate basin and the multi-media filter by an intermediate basin lift pump, wherein the intermediate basin lift pump is mounted inside the intermediate basin.
In some embodiments, the sludge is pumped into a sludge filter press by a sludge screw pump, the sludge filter press is used for dewatering the sludge, and a liquid outlet of the sludge filter press is communicated with a liquid inlet of the regulating tank.
Has the positive beneficial effects that:
the utility model is a system which has obvious treatment effect and convenient operation management and is specially used for deeply treating stone cleaning wastewater;
in the treatment of the stone cleaning wastewater, a neutralization reaction, a coagulating sedimentation system and a filtering system are combined, so that the treatment process of the stone cleaning wastewater is more stable, the reasonable and feasible cost and the operation management cost are ensured, the effluent quality is ensured to reach the standard for reuse, the pollution to the ecological environment is reduced, and the water resource is also greatly saved;
in a further embodiment, the submersible mixer is arranged in the regulating tank, so that the sewage has better fluidity, the uniform water quality is facilitated, and the accumulation of sludge in the tank is reduced;
in a further embodiment, the sludge press filter is matched to realize the dehydration of sludge, the wastewater can be recycled through the regulating tank again, and the sludge is convenient to carry out harmless treatment on the sludge after the dehydration, so that the stone cleaning wastewater treatment process and the stone cleaning wastewater result are more environment-friendly.
Drawings
FIG. 1 is a schematic diagram of a system architecture of the present utility model;
the figure is: the system comprises an adjusting tank 1, an adjusting tank lifting pump 2, a neutralization tank 3, a coagulation reaction tank 4, a flocculation reaction tank 5, a neutralization tank stirring reaction system 6, a coagulation reaction tank stirring reaction system 7, a flocculation reaction tank stirring reaction system 8, a PAM dosing system 9, a PAC dosing system 10, a NaOH dosing system 11, a PAM dosing pump 12, a PAC dosing pump 13, a NaOH dosing pump 14, a diagonal pipe sedimentation tank 15, a diagonal pipe packing 16, an intermediate water tank 17, an intermediate water tank lifting pump 18, a multi-medium filter 19, a sludge tank 20, a sludge screw pump 21, a sludge filter press 22, a submersible mixer 23, an adjusting tank online pH meter 24 and a neutralization tank online pH meter 25;
description of the embodiments
The utility model is further described below with reference to the drawings and examples.
Example 1
As shown in fig. 1, a system for treating stone cleaning wastewater is characterized in that: the wastewater enters a neutralization tank 3 through lifting in the regulating tank 1, then enters a coagulation reaction tank 4 through self-flowing, then enters a flocculation reaction tank 5 through self-flowing, then enters an inclined tube sedimentation tank 15 through self-flowing, sludge is discharged from the bottom of the inclined tube sedimentation tank 15 and enters a sludge tank 20, effluent of the inclined tube sedimentation tank 15 enters an intermediate water tank 17 through self-flowing, and is lifted to a multi-medium filter 19 through an intermediate water tank lifting pump 18, and then is recycled.
The production wastewater is collected and enters the regulating tank 1, the regulating tank 1 is used for regulating water quantity and uniform water quality, an online pH meter 24 is arranged in the tank and used for monitoring the pH of the wastewater in real time, a lifting pump 2 is arranged in the tank and used for lifting the wastewater to a subsequent treatment working section, and a submersible mixer 23 is arranged in the tank, so that uniform water quality is facilitated, and accumulation of sludge in the tank is reduced.
The wastewater is lifted into a neutralization tank 3, and the neutralization tank 3 mainly comprises a NaOH dosing system 11 and a neutralization tank stirring reaction system 6. The NaOH dosing system 11 is equipped with a NaOH dosing pump 14 for dosing NaOH to the neutralization tank 3 for neutralization. The neutralization tank stirring reaction system 6 has the function of fully mixing NaOH and wastewater by stirring so as to accelerate the neutralization reaction. Meanwhile, the neutralization tank 3 is provided with an online pH meter 25 for monitoring the real-time pH value, and the dosage is automatically adjusted by the linkage of the online pH meter 25 and the dosing pump 14, so that the effect of the neutralization tank 3 is ensured, and the acid in the wastewater is removed.
The neutralized wastewater automatically flows into the coagulation reaction tank 4, and the coagulation reaction tank 4 mainly comprises a PAC dosing system 10 and a coagulation reaction tank stirring reaction system 7.PAC dosing system 10 is equipped with PAC dosing pump 13 for dosing coagulant PAC to coagulation reaction tank 4. The stirring reaction system 7 of the coagulation reaction tank has the functions of fully mixing the coagulant PAC with the wastewater through stirring, accelerating the coagulation reaction, reducing the chromaticity of the wastewater through the coagulation reaction, and removing flocs generated by the reaction of suspended matters and the coagulant PAC from the wastewater.
The effluent of the coagulation reaction tank 4 enters a flocculation reaction tank 5, and the flocculation reaction tank 5 mainly comprises a PAM dosing system 9 and a flocculation reaction tank stirring reaction system 8. The PAM dosing system 9 is equipped with a PAM dosing pump 12 for dosing coagulant aid PAM to the flocculation reaction tank 5. The flocculation reaction tank stirring reaction system 8 has the functions of fully mixing coagulant aid PAM with wastewater through stirring, accelerating the flocculation reaction, and adding the coagulant aid PAM, so that the flocs generated by the coagulation reaction can be further aggregated to generate larger floccule particles, and preparation is made for subsequent precipitation.
The mud-water mixture after neutralization reaction, coagulation and flocculation reaction enters an inclined tube sedimentation tank 15, and the inclined tube sedimentation tank 15 is matched with an inclined tube filler 16. After the wastewater undergoes neutralization, coagulation and flocculation, flocs which are easy to precipitate are generated, mud-water separation is carried out in the inclined tube sedimentation tank 15, the matched inclined tube filler 16 is favorable for better precipitation of the flocs, and most of chromaticity and suspended matters in the wastewater are removed through the reaction, precipitation and wastewater. The treated wastewater flows out from the upper part of the inclined tube sedimentation tank 15 to the middle water tank 17.
The wastewater enters a multi-medium filter 19 through an intermediate water tank lifting pump 18, filter materials such as quartz sand and anthracite are arranged in the multi-medium filter 19, chromaticity and suspended matters in the wastewater are further removed through filtering, and the wastewater treated by the multi-medium filter 19 reaches the recycling standard and is recycled for a washing section. The multi-media filter 19 is periodically backwashed to clean the filter media, and backwash water is admitted to the conditioning tank 1.
The flocculate precipitated in the inclined tube sedimentation tank 15 is discharged to a sludge tank 20 from the bottom of the inclined tube sedimentation tank 15, the sludge in the sludge tank 20 is primarily concentrated and then pumped to a sludge press filter 22 for dehydration treatment through a sludge screw pump 21, and the sludge press filter 22 presses filtrate and supernatant of the sludge tank 20 to enter an adjusting tank 1.
Example 2
Henan stone processing enterprise, waste water treatment station waste water volume 80m 3 /d, wherein the operation is carried out for 8 hours a day, the hourly throughput is 10 m 3 The water quality of the inflow water is designed to be pH 2-3, chromaticity is less than or equal to 50 degrees, and SS is less than or equal to 500mg/L.
In the concrete implementation, the regulating tank 1 is provided with a seat, and the effective volume is 200m 3 The hydraulic retention time is about 60 hours, the front end is connected with an enterprise waste water pipeline and is provided with two regulating tank lifting pumps 2) and a set of regulating tank submersible stirrer 23, wherein one regulating tank lifting pump 2 is normally used, the other regulating tank lifting pump is standby, and waste water is uniformly mixed through stirring and the set of online pH meter 24.
The neutralization tank 3 is provided with a seat with an effective volume of 3.3m 3 The reaction time is about 20min, a set of NaOH dosing system 11 and a set of stirring reaction system 6 are provided, the NaOH dosing system 11 is provided with two NaOH dosing pumps 14, naOH is added into the neutralization tank 3, and the neutralization reaction is carried out under the action of the stirring reaction system 6.
The coagulation reaction tank 4 is provided with a seat, and the effective volume is 3.3m 3 The reaction time is about 20min, a PAC dosing system 10 and a stirring reaction system 7 are provided, the PAC dosing system 10 is provided with two PAC dosing pumps 13, PAC is added into the coagulation reaction tank 4, and the coagulation reaction is carried out under the action of the stirring reaction system 7.
The flocculation reaction tank 5 is provided with a seat, and the effective volume is 3.3m 3 The reaction time is about 20min, a set of PAM dosing system 9 and a set of stirring reaction system 8 are provided, the PAM dosing system 9 is provided with two PAM dosing pumps 12, PAM is added into the flocculation reaction tank 5, and flocculation is carried out under the action of the stirring reaction system 8And (3) condensation reaction.
The inclined tube sedimentation tank 15 is provided with a seat, and the surface hydraulic load is 1.6m 3 /(m 2 H), the sedimentation time is about 2h, the set of inclined tube filler 16 is matched, the flocculate suspended in the wastewater is separated from the water sediment and then discharged to a sludge pond 20 through the bottom of the inclined tube sedimentation pond 15, and the supernatant liquid is discharged to an intermediate water pond 17 after mud-water separation.
The middle water tank 17 is provided with a seat with an effective volume of 3.0m 3 Two intermediate pond lift pumps 18 are provided to provide water intake for the multi-media filter 19 and also to provide backwash water pumps, one of the two intermediate pond lift pumps 18 being a back-up device.
The multi-medium filter 19 is provided with a filter speed of 8.8 m/h, and the filter effluent is reused in the water washing section.
The sludge tank 20 is provided with a seat, and the effective volume is 30m 3 The sludge in the sludge tank 20 is pumped to a sludge press filter 22 through a sludge screw pump 21 for dehydration treatment, and the sludge press filter 22 presses filtrate and supernatant of the sludge tank 20 to enter the regulating tank 1.
The effluent water quality after the wastewater treatment system reaches the water quality of industrial water for urban sewage recycling (GB/T19923-2005) in the water standard for washing in the table 1, and the water quality specifically comprises the following components: pH is 6-9, chromaticity is less than or equal to 30 degrees, and SS is less than or equal to 30mg/L.
The wastewater treatment system is not only suitable for advanced treatment systems and recycling of stone cleaning wastewater, but also suitable for cleaning wastewater in other stone processing industries with similar characteristics.
The above examples are only for illustrating the preferred embodiments of the present utility model, but the present utility model is not limited to the above embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model within the knowledge of those skilled in the art should be included in the scope of the claimed technical solution of the present utility model.
Claims (9)
1. A system for treating stone cleaning wastewater, which comprises an adjusting tank (1) for adjusting the sewage water quantity and the uniform water quality, and is characterized in that:
an adjusting tank lifting pump (2) is arranged in the adjusting tank (1), a water outlet hole of the adjusting tank lifting pump (2) is sequentially connected with a neutralizing tank (3) for neutralizing water quality, a coagulation reaction tank (4) for coagulating sewage, a flocculation reaction tank (5) for flocculating sewage and a inclined tube sedimentation tank (15) for separating sediments, and the inclined tube sedimentation tank (15) is used for separating sewage into sewage and sludge;
the sludge outlet of the inclined tube sedimentation tank (15) is communicated with the sludge tank (20), and the water outlet of the inclined tube sedimentation tank (15) is sequentially communicated with the middle water tank (17) and the multi-medium filter (19) for recycling water resources.
2. A system for treating stone cleaning wastewater as set forth in claim 1, wherein: and an adjusting tank online pH meter (24) and a neutralizing tank online pH meter (25) are respectively arranged in the adjusting tank (1) and the neutralizing tank (3) and are used for monitoring the pH of the wastewater in real time.
3. A system for treating stone cleaning wastewater as set forth in claim 2, wherein: the regulating tank (1) is internally provided with a submersible mixer (23).
4. A system for treating stone cleaning wastewater according to claim 1 or 3 and wherein: the neutralization pond (3) comprises an NaOH dosing system (11) and a neutralization pond stirring reaction system (6) for mixing liquid in the neutralization pond (3), wherein an NaOH dosing pump (14) is arranged in the NaOH dosing system (11), and the drug outlet end of the NaOH dosing pump (14) is communicated with the neutralization pond (3) through a pipeline.
5. A system for treating stone cleaning wastewater according to claim 1 or 3 and wherein: the coagulation reaction tank (4) comprises a PAC dosing system (10) and a coagulation reaction tank stirring reaction system (7) for mixing liquid in the coagulation reaction tank (4), wherein a PAC dosing pump (13) is arranged in the PAC dosing system (10), and a drug outlet end of the PAC dosing pump (13) is communicated with the coagulation reaction tank (4) through a pipeline.
6. A system for treating stone cleaning wastewater according to claim 1 or 3 and wherein: the flocculation reaction tank (5) comprises a PAM dosing system (9) and a flocculation reaction tank stirring reaction system (8) for accelerating flocculation reaction in the flocculation reaction tank (5), wherein a PAM dosing pump (12) is arranged in the PAM dosing system (9), and a drug outlet end of the PAM dosing pump (12) is communicated with the flocculation reaction tank (5) through a pipeline.
7. A system for treating stone cleaning wastewater as set forth in claim 1, wherein: and an inclined tube filler (16) for separating sediment is arranged in the inclined tube sedimentation tank (15).
8. A system for treating stone cleaning wastewater as set forth in claim 1, wherein: the waste water is conveyed between the intermediate water tank (17) and the multi-medium filter (19) through an intermediate water tank lifting pump (18), wherein the intermediate water tank lifting pump (18) is arranged inside the intermediate water tank (17).
9. A system for treating stone cleaning wastewater as set forth in claim 1, wherein: sludge is pumped into a sludge filter press (22) through a sludge screw pump (21) in the sludge tank (20), the sludge filter press (22) is used for dewatering the sludge, and a liquid outlet of the sludge filter press (22) is communicated with a liquid inlet of the regulating tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321503503.1U CN219950786U (en) | 2023-06-14 | 2023-06-14 | System for be used for handling stone material washing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321503503.1U CN219950786U (en) | 2023-06-14 | 2023-06-14 | System for be used for handling stone material washing wastewater |
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| CN219950786U true CN219950786U (en) | 2023-11-03 |
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| CN202321503503.1U Active CN219950786U (en) | 2023-06-14 | 2023-06-14 | System for be used for handling stone material washing wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119750829A (en) * | 2024-12-30 | 2025-04-04 | 北京首钢吉泰安新材料有限公司 | Annealing wastewater treatment system |
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2023
- 2023-06-14 CN CN202321503503.1U patent/CN219950786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119750829A (en) * | 2024-12-30 | 2025-04-04 | 北京首钢吉泰安新材料有限公司 | Annealing wastewater treatment system |
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