CN220951482U - Waste acid recovery device - Google Patents
Waste acid recovery device Download PDFInfo
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- CN220951482U CN220951482U CN202322807355.9U CN202322807355U CN220951482U CN 220951482 U CN220951482 U CN 220951482U CN 202322807355 U CN202322807355 U CN 202322807355U CN 220951482 U CN220951482 U CN 220951482U
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- 239000002253 acid Substances 0.000 title claims abstract description 170
- 239000002699 waste material Substances 0.000 title claims abstract description 47
- 238000011084 recovery Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000011347 resin Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 230000000979 retarding effect Effects 0.000 claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 33
- 238000001728 nano-filtration Methods 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 239000010865 sewage Substances 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 9
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 37
- 238000011282 treatment Methods 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 8
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to the technical field of wastewater treatment devices, in particular to a waste acid recovery device; the utility model comprises a waste acid tank, a PP bag filter, a cascade nanofiltration membrane, an acid retarding resin tank and a clean acid tank which are sequentially connected, wherein a filtering booster pump is connected between the waste acid tank and the PP bag filter, the acid retarding resin tank is also provided with a water inlet pipe and a water outlet pipe respectively.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment devices, in particular to a waste acid recovery device.
Background
The metal products require passivation surface treatments in order to enhance the surface's decorative and corrosion resistance properties. Typical aluminum alloy anodic oxidation, stainless steel electrolysis and steel pickling production procedures comprise degreasing cleaning and pickling, and a plurality of water washing steps are performed after the treatment procedures. Wherein, chemical polishing, electrolysis and acid washing increase the surface flatness and glossiness. The common metal surface bath solution is acid such as phosphoric acid, sulfuric acid, nitric acid, hydrochloric acid or a mixture of several acids. In production, as the metal is continuously dissolved in the working tank liquor, the tank liquor finally has poor treatment effect and treatment rate due to the excessively high content of metal ions, and at the moment, replacement and addition are needed, so that a large amount of high-concentration acid-containing waste liquid containing metal ions can be discharged. In addition, the metal product is transferred from the working tank to the water washing tank for water washing after the treatment, and a large amount of acid liquor is brought in, so that a large amount of rinse wastewater containing acid and metal is generated. The method generally adopts alkali addition neutralization and flocculation precipitation for treating the acid-containing waste liquid and the rinsing waste water in industry, and the method consumes a large amount of chemical agents and generates a large amount of industrial sludge (hazardous waste), and the sludge is required to be subjected to outsourcing advanced treatment, so that the corresponding operation cost of enterprises is greatly increased, and meanwhile, huge resource waste is caused.
Therefore, based on the above-described drawbacks of the existing acid-containing waste liquid treatment techniques, improvements are needed to the existing acid-containing waste liquid treatment techniques.
Disclosure of utility model
The utility model aims to provide a waste acid recovery device aiming at the defects of the prior art, and the waste acid recovery device solves the problems of the prior acid-containing waste liquid treatment technology: complex process, high cost and the like.
In order to achieve the above object, the present utility model is achieved by the following technical scheme.
The waste acid recovery device comprises a waste acid tank, a PP bag filter, a cascade nanofiltration membrane, an acid retarding resin tank and a clean acid tank which are sequentially connected, wherein a filtering booster pump is connected between the waste acid tank and the PP bag filter, and the acid retarding resin tank is further provided with a water inlet pipe and a water outlet pipe respectively.
Further, the water outlet pipe of the acid retarding resin tank is connected with the sewage tank, and the wastewater containing metal ions is discharged into the wastewater tank.
Further, the PP bag filter is connected with a primary acid circulating tank, and the primary acid circulating tank is connected with the cascade nanofiltration membrane through a primary circulating booster pump to press waste acid into the cascade nanofiltration membrane for filtration.
Further, the inlet tube of acid block resin jar connect pure water holding vessel, the external water purification machine of pure water holding vessel, be connected with the measurement pressure pump between pure water holding vessel, the acid block resin jar, can carry out the ration to the acid block resin jar and send water.
Further, the cascade nanofiltration membrane is connected with a secondary acid circulation tank, the secondary acid circulation tank is connected with an acid retarding resin tank through an acid feeding metering pump, and the secondary acid circulation tank is used for storing the filtrate of the cascade nanofiltration membrane in a transferring way and sending the filtrate into the acid retarding resin tank.
Further, the primary acid circulation tank and the secondary acid circulation tank are connected with the sewage tank for circulation treatment.
Further, the PP bag filter is connected with the sewage tank, and filter residues and the super-concentrated liquid are discharged into the sewage tank for cyclic treatment.
Furthermore, a circulating reflux pipeline is arranged between the cascade nanofiltration membrane and the primary acid circulating tank for circulating treatment.
The utility model has the beneficial effects that: the waste acid in the waste acid tank is subjected to three-stage physical filtration through a PP bag filter, an overlapping nanofiltration membrane and an acid retarding resin tank, and the filtered acid water is stored in a clean acid tank and can be recycled, so that metal ions and other impurities in the acid-containing liquid can be removed in a targeted manner, the recycling can be performed, the emission of pollutants is directly reduced, the operation cost of enterprises is reduced, and the consumption of non-renewable resources is saved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic diagram of the operation flow of the present utility model.
Reference numerals and description:
1-a primary acid circulation tank; 2-a primary circulating booster pump; 3-cascade nanofiltration membranes; a 4-secondary acid circulation tank; a 5-PP bag filter; 6-filtering a booster pump; 7-a waste acid tank; 8-a sewage tank; 9-an acid feeding metering pump; 10-acid retarding resin tank; 11-a metering pressure pump; 12-a pure water storage tank; 13-a water purifier; 14-a clean acid tank; 15-a device central control box; a 1-a cascade nanofiltration membrane circulating reflux valve; a 2-overlapping nanofiltration membrane clear liquid producing water valve; b1-pp bag filter water producing valve; b2-pp bag filter blowdown valve; b 3-check valve; b 4-a first-stage acid circulating tank blow-down valve; b 5-a drain valve of the secondary acid circulating tank; b 6-an acid inlet control valve; b 7-an exhaust valve; b8-a pure water inlet valve; b 9-a waste water drain valve; b 10-acid purifying and acid discharging valve.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The utility model discloses a waste acid recovery device, which is shown in fig. 1-2, and relates to waste acid fractional purification treatment, acid retardation resin utilization and a resin regeneration method; the working process comprises the steps of waste acid liquid entering the device, micro-filtering, nano-filtering, waste acid retarding and separating metal, metal-containing wastewater removing, and resin retarding and acid radical releasing (acid recycling).
The waste acid tank 7 is a container formed by welding anti-corrosion materials and used for quantitatively collecting external waste acid water, and the waste acid tank 7 is provided with an acid inlet, a cover plate, an acid outlet and a sewage outlet, and the acid outlet is connected with the filtering booster pump 6 through a pipeline.
The PP bag filter 5 is a micron-sized filter and is used for separating and removing substances with the diameter of 5 mu m in waste acid and performing primary purification. The PP bag filter 5 is fixed inside the device and is provided with a pressure gauge, a replaceable filter bag, a sewage outlet, a liquid inlet and a liquid outlet, wherein the liquid inlet is connected with the filtering booster pump 6 through a pipeline, the liquid outlet is connected with the liquid inlet of the primary acid circulating tank 1 through the water producing valve b1 of the PP bag filter, the sewage outlet is connected with the sewage tank 8 through a pipeline and the sewage outlet valve b2 of the PP bag filter, and the pipeline is internally provided with an electric ball valve.
The product of PP bag filter 5 is stored in the first-stage acid circulation groove 1, and the cascade nanofiltration membrane 3 is connected through first-stage circulation booster pump 2, first-stage acid circulation groove 1 is equipped with pure water import, drain, inlet, liquid outlet, level gauge, and external pure water supply device is connected to the pure water import, and the drain passes through pipeline, first-stage acid circulation groove blowoff valve b4 and connects sewage groove 8, all is equipped with electric ball valve in the pipeline. A reflux pipeline is connected between the first-stage acid circulation tank 1 and the cascade nanofiltration membrane 3, and the reflux pipeline is connected with a cascade nanofiltration membrane circulation reflux valve a1.
The cascade nanofiltration membrane 3 is of a plate type membrane structure, a plurality of layers of membranes are pressed together, a membrane shell is formed by adopting high-strength corrosion-resistant materials through seamless welding, the filtration precision is in a nano level, no phase change chemical reaction exists in the filtration process, other impurities are not brought in, the soluble salt can be removed, the recovery rate is high, the occupied area is small, and the energy consumption is low. The cascade nanofiltration membrane 3 is provided with a stock solution inlet, a filtered solution outlet and a circulating reflux port, wherein the stock solution inlet is connected with the primary circulating booster pump 2, the filtered solution outlet is connected to a liquid inlet of the secondary acid circulating tank 4 through a cascade nanofiltration membrane filtered solution water producing valve a2, and the circulating reflux port is connected with the primary acid circulating tank through the cascade nanofiltration membrane circulating reflux valve a 1.
The secondary acid circulation tank 4 is used for transferring and storing the filtered clear liquid of the cascade nanofiltration membrane 3, the acid feeding metering pump 9 is connected to supply the filtered clear liquid for the acid retardation resin tank 10, the secondary acid circulation tank 4 is provided with a pure water inlet, a sewage outlet, a liquid inlet, a liquid outlet and a liquid level meter, the pure water inlet is connected with an external pure water supply device, the sewage outlet is connected with the sewage tank 8 through a pipeline and a secondary acid circulation tank sewage discharging valve b5, and electric ball valves are arranged in the pipeline. The check valve b3 is connected with the pipeline between the acid feeding metering pump 9 and the acid retarding resin tank 10, and the acid feeding control valve b6 is connected with the pipeline between the secondary acid circulating tank 4 and the acid feeding metering pump 9.
The acid retarding resin tank 10 is of a specific flat barrel structure, is a place for containing acid retarding resin to separate acid and metal ions, the size of the acid retarding resin tank 10 is designed into different flat ratios according to the flow of the device, the upper end of the acid retarding resin tank is provided with a pure water inlet and an exhaust port, the exhaust port is connected with an exhaust valve b7, the pure water inlet is connected with a pure water storage tank 12 and a sewage tank 8 through a T-shaped pipe, the lower end of the pure water inlet is provided with an acid inlet and outlet (same port), the acid outlet is connected with a clean acid tank 14 through a clean acid outlet valve b10, a metering pressure pump 11 is connected between the acid retarding resin tank 10 and the pure water storage tank 12, a pure water inlet valve b8 is connected between the acid retarding resin tank 10 and the metering pressure pump 11, and a waste water blow-off valve b9 is connected between the acid retarding resin tank 10 and the sewage tank 8.
The pure water machine 13 is used for directly supplying the required pure water for the production of the device, is connected to the water inlet of the pure water storage tank 12, is provided with an electric ball valve in a pipeline, and is mainly used for cleaning each tank in the device and releasing the acid in the acid retarding resin.
The pure water storage tank 12 temporarily stores pure water produced by the pure water machine 13 and supplies the pure water to a portion of the apparatus where pure water is required for operation in time.
The metering pressure pump 11 mainly performs the injection of quantitative pure water into the acid retarding resin tank 10 to release quantitative acid water, the metering pressure pump 11 has the effects of flow metering and flow pressurization, is provided with a liquid inlet, a liquid outlet and an electronic pressure sensor, and can be automatically started and stopped according to the pressure and the flow set by the device.
The sewage tank 8 is a terminal container of the device, and is used for temporarily storing sewage discharged by various tanks and backwashing cleaning liquid of the acid-retarding resin tank 10, and is connected with an external sewage device, and the sewage tank 8 is provided with a liquid inlet, a liquid outlet and a liquid level protection device, so that overflow liquid leakage is prevented.
The PLC central control device 15 adopts a PLC module and a man-machine interaction touch screen interface and is used for the integral operation logic of the purification device, the functions of automatic purification, automatic separation and self-cleaning of the device can be realized, and the manual operation and the automatic operation can be controlled and are connected with the electric components in the acid recovery device.
In the above technical scheme, waste acid tank 7, PP bag filter 5, first order acid circulation groove 1, second order acid circulation groove 4, acid blocking resin jar 10, advance sour measuring pump 9, water purification machine 13, pure water holding vessel 12, measurement pressure pump 11, dirty water tank 8, clean sour groove 14 etc. parts are all installed on a sled dress frame base, and the advantage is that with a plurality of modularization processing apparatus integration together, installation easy operation, equipment is small, area reduces 2/3, interior space utilization is high.
As shown in fig. 2, the operation flow of the waste acid recovery device is as follows: pumping external waste acid into a waste acid tank 7, micro-filtering the waste acid through a PP bag filter 5 with the precision of 5 mu m, separating impurities with the diameter of more than 5 mu m from acid water, enabling primary filtrate with the diameter of less than 5 mu m to enter a primary acid circulation tank 1, and discharging filter residues and super-concentrated liquid into a sewage tank 8; the first-stage circulating booster pump 2 is utilized, the filtering liquid in the first-stage acid circulating tank 1 is hydraulically used for preparing an overlapping nanofiltration membrane 3 with the filtering aperture of 1nm-100nm, nanofiltration separation is carried out, the second-stage filtering liquid enters the second-stage acid circulating tank 4, and the intercepted nanofiltration ultra-concentrated liquid is discharged into the sewage tank 8; quantitatively pressing the nanofiltration acid liquor in the secondary acid circulation tank 4 into the resin tank from an acid inlet of the acid retarding resin tank 10 by using an acid feeding metering pump 9, filling the resin tank with the acid retarding resin tank 10, wrapping free acid radicals in acid water by the acid retarding resin to prevent the acid retarding resin from being discharged, and discharging the wastewater containing metal ions, which is not wrapped by the resin, in the acid retarding resin tank 10 from a pure water inlet at the top of the tank to be discharged into a wastewater tank through a wastewater blow-down valve; after the waste acid enters the acid retarding resin tank 10 according to the set flow, the pure water in the pure water storage tank 12 is injected into the acid retarding resin tank 10 by the metering pressure pump 11, pure acid water wrapped in retarding resin is released, discharged through a waste acid inlet at the lower end of the acid retarding resin tank 10, discharged into the acid purifying tank 14 through the acid purifying outlet valve b10 for storage, discharged out of the device for further treatment, and the above processes are all completed, namely, a single waste acid recovery period is completed.
The utility model can be applied to the waste acid required recovery treatment process used for the surface treatment of various metals, and has the following main beneficial effects.
1. Aiming at the characteristics of strong acidity and strong corrosiveness of waste acid, the whole filtering device is made of environment-friendly plastic materials, all the overflow parts have no metal structure, and the filtering device has good corrosion resistance and long service life.
2. The quantity of the acid blocking resin tanks 10 is customized according to the customer handling capacity requirement, and is one or more groups, not limited to the 1 group shown in fig. 1, the groups are not interfered with each other, the metering pressure pump 11 and the acid feeding metering pump 9 are matched to operate independently, and the modularized disassembly, maintenance and replacement are more convenient.
3. And by adopting the cascade nanofiltration membrane, the recovery rate is high, the occupied area is small, and the energy consumption is low.
4. The waste acid enters the device and is subjected to three-stage treatment, wherein the first stage is bag filtration, the second stage is nanofiltration membrane filtration, and acid blocking resin for three-stage treatment separates acid from metal to produce acid water mixed liquor which can reach recycling standard.
5. The membrane cleaning device is provided with a self-cleaning function, a proper membrane cleaning agent is selected according to the property of filtrate, a self-cleaning mode is started after the multi-time back flushing function is executed, the membrane is cleaned by the membrane cleaning agent, the optimal state of the membrane is recovered, and the regeneration of the membrane is completed.
6. The device integrates, a plurality of modularized processing devices can be integrated together, each device is processed step by step, the removal of impurities in chemical polishing liquid is realized, and the purpose of purifying the chemical polishing liquid is realized.
7. The whole device adopts a PLC module to collect and analyze data, and then transmits the data to a man-machine interaction touch screen interface for controlling the whole operation logic of the filtering device, and can realize the functions of filtering, separating acid and metal, maintaining resin and self-cleaning, and manual and automatic control can be realized.
8. All the storage tanks in the device are provided with drain outlets and high-low liquid level meters; the liquid level can be accurately controlled, overflow or liquid shortage work is prevented, and the tank body is cleaned more conveniently.
It is understood that the above-described embodiments are merely preferred examples of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent changes or modifications of the structure, features and principles described in the claims are intended to be included in the scope of the present utility model.
Claims (8)
1. The utility model provides a waste acid recovery unit which characterized in that: the acid-retarding resin tank is connected with a filtering booster pump between the waste acid tank and the PP bag filter, and is also provided with a water inlet pipe and a water outlet pipe respectively.
2. The waste acid recovery device according to claim 1, wherein: the water outlet pipe of the acid retarding resin tank is connected with the sewage tank.
3. A spent acid recovery apparatus according to claim 2, characterized in that: the PP bag filter is connected with a primary acid circulating tank, and the primary acid circulating tank is connected with the cascade nanofiltration membrane through a primary circulating booster pump.
4. The waste acid recovery device according to claim 1, wherein: the water inlet pipe of the acid retarding resin tank is connected with the pure water storage tank, the pure water storage tank is externally connected with a pure water machine, and a metering pressure pump is connected between the pure water storage tank and the acid retarding resin tank.
5. A spent acid recovery apparatus according to claim 3, characterized in that: the cascade nanofiltration membrane is connected with a secondary acid circulation tank, and the secondary acid circulation tank is connected with an acid retarding resin tank through an acid feeding metering pump.
6. The waste acid recovery device according to claim 5, wherein: the first-stage acid circulation tank and the second-stage acid circulation tank are connected with the sewage tank.
7. The waste acid recovery device according to claim 1, wherein: the PP bag filter is connected with the sewage tank.
8. The waste acid recovery device according to claim 5, wherein: and a circulating reflux pipeline is arranged between the cascade nanofiltration membrane and the primary acid circulating tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322807355.9U CN220951482U (en) | 2023-10-18 | 2023-10-18 | Waste acid recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322807355.9U CN220951482U (en) | 2023-10-18 | 2023-10-18 | Waste acid recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220951482U true CN220951482U (en) | 2024-05-14 |
Family
ID=91024519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322807355.9U Active CN220951482U (en) | 2023-10-18 | 2023-10-18 | Waste acid recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220951482U (en) |
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2023
- 2023-10-18 CN CN202322807355.9U patent/CN220951482U/en active Active
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