CN220034289U - Rare earth-containing leaching wastewater recovery treatment system - Google Patents
Rare earth-containing leaching wastewater recovery treatment system Download PDFInfo
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- CN220034289U CN220034289U CN202321664516.7U CN202321664516U CN220034289U CN 220034289 U CN220034289 U CN 220034289U CN 202321664516 U CN202321664516 U CN 202321664516U CN 220034289 U CN220034289 U CN 220034289U
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 26
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 26
- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 238000002386 leaching Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 141
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 31
- 238000004062 sedimentation Methods 0.000 claims abstract description 26
- 238000005189 flocculation Methods 0.000 claims abstract description 18
- 230000016615 flocculation Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 39
- 238000001223 reverse osmosis Methods 0.000 claims description 34
- 238000000926 separation method Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 238000005352 clarification Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 3
- 238000005536 corrosion prevention Methods 0.000 claims description 2
- 238000009776 industrial production Methods 0.000 abstract description 11
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 239000000084 colloidal system Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000011033 desalting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- -1 suspended matters Substances 0.000 description 2
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 241000242583 Scyphozoa Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a rare earth-containing leaching wastewater recovery treatment system, which comprises a leaching solution raw water tank and a pH adjusting tank, wherein raw material liquid with the pH adjusted enters a flocculation sedimentation tank; the output end of the flocculation sedimentation tank is connected with a clean water tank; the output end of the clean water tank is connected with a multi-medium filter; the output end of the multi-medium filter is connected with an ultrafiltration device; the output end of the ultrafiltration device is connected with an RO raw water tank; the concentrated water output end of the ultrafiltration device returns to the raw water tank; the output end of the RO raw water tank is connected with an RO device; the output end of the RO device is respectively connected with an RO water producing tank and an RO concentration tank; the RO water producing tank is connected with a recycling system; the output end of the RO concentration tank is connected with a concentrated water system; the utility model greatly reduces the water consumption of industrial production, recovers water resources to a great extent, relieves the shortage of water resources to the greatest extent, solves the problem of environmental pollution, and simultaneously facilitates the recovery of rare earth products in waste liquid.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a rare earth-containing leaching wastewater recovery treatment system.
Background
The wastewater discharged in the rare earth smelting process always restricts the development of rare earth manufacturing enterprises, and the pollution of heavy metals in the wastewater not only causes great trouble to the environment and the life of people, but also causes great waste of rare earth resources. The recovery treatment system for the leaching wastewater containing the rare earth is required to be provided, the problem of heavy metal pollution caused by the discharge of the wastewater into a natural water body is creatively solved, more than 75% of water can be recovered from the discharged wastewater and is reused for industrial production, the water consumption of the industrial production is greatly reduced, the problems of water resource shortage and environmental pollution are greatly relieved, meanwhile, the rare earth product is conveniently recovered, and the production cost of enterprises is reduced.
Disclosure of Invention
The utility model aims to provide a recovery treatment system for leaching wastewater containing rare earth, which can recycle reclaimed water to a production line after treatment, ensure that the system can recycle more than 75% of water from discharged sewage for industrial production, greatly reduce the water consumption of industrial production, greatly relieve the water resource shortage and solve the problem of environmental pollution, and simultaneously facilitate the recovery of rare earth products.
The utility model is realized by the following technical scheme:
a rare earth-containing leaching wastewater recovery treatment system comprises a leaching solution raw water tank and a pH adjusting tank, wherein raw material liquid with the pH adjusted enters a flocculation sedimentation tank; the output end of the flocculation sedimentation tank is connected with a clean water tank; the output end of the clean water tank is connected with a multi-medium filter; the output end of the multi-medium filter is connected with an ultrafiltration device; the output end of the ultrafiltration device is connected with an RO raw water tank; the concentrated water output end of the ultrafiltration device returns to the raw water tank; the output end of the RO raw water tank is connected with an RO device; the output end of the RO device is respectively connected with an RO water producing tank and an RO concentration tank; the RO water producing tank is connected with a recycling system; the output end of the RO concentration tank is connected with a concentrated water system.
The pH adjusting tank is a concrete tank, the interior is subjected to corrosion prevention treatment, and the pH value of the liquid is adjusted by adopting a metering pump on-line medicament adding mode according to the pH feedback condition of the liquid.
The flocculation sedimentation tank is an improved technical scheme of the utility model, and comprises a steel rectangular tank body, a clarification area and a sedimentation area, wherein the clarification area is provided with a water inlet pipe, a central guide pipe, an inclined pipe and a reflecting plate, and a backwash water tank is closely arranged beside the side wall of the sedimentation area and runs by gravity.
Further as an improvement of the technical scheme of the utility model, the multi-medium filter is a steel cylindrical tank body, and quartz sand is adopted as a filter medium for pressure type operation.
Further as an improvement of the technical scheme of the utility model, the filter backwash water of the multi-medium filter is returned to the raw water tank through a pipeline.
Further as an improvement of the technical scheme of the utility model, the concentrated water/backwash water of the ultrafiltration device is returned to the raw water tank through a pipeline.
Further as an improvement of the technical scheme of the utility model, the RO device is a reverse osmosis device for removing most ions in water by a membrane separation technology.
The utility model has the beneficial effects that:
compared with the prior art, the rare earth-containing leaching wastewater recovery treatment system adopts a membrane separation technologyRare earth elements are separated from the wastewater, and the concentrated water is recycled for other purposes. The specific technical proposal is composed of a pretreatment system and an RO system, and the total water treatment amount is 10000m 3 And/d, the final water production of the sewage treatment station is 7500-8000m3/d of reuse water and 1500-2000m of reuse water 3 Concentrated brine of/d. The reclaimed water after the treatment can be recycled to the production line, so that the system can recover more than 75% of water from the discharged sewage, and the reclaimed water is recycled for industrial production, the water consumption of the industrial production is greatly reduced, the problems of water resource shortage and environmental pollution are greatly relieved, and meanwhile, the rare earth products are conveniently recovered.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a membrane separation system of the present utility model;
FIG. 2 is a table of incoming water quality for an embodiment of the present utility model;
FIG. 3 is a chart of the quality of produced water according to an embodiment of the present utility model.
In the accompanying drawings: 1-raw water; 2-a raw water tank; 3-a pH adjusting tank; 4-flocculation sedimentation tank; 5-plate frame filtration; 6, filtering residues; 7-a clean water tank; 8-multi-media filter; 9-an ultrafiltration device; 10-RO raw water tank; 11-RO means; 12-RO water producing tank; 13-RO concentrate tank.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected via an intermediary, or connected by communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in figure 1, the rare earth-containing leaching wastewater recovery treatment system comprises a raw water tank 2 and a pH adjusting tank 3, wherein raw material liquid with the pH adjusted enters a flocculation sedimentation tank 4; the output end of the flocculation sedimentation tank 4 is respectively connected with a plate frame filter 5 and a clean water tank 7; the output end of the clean water tank 7 is connected with a multi-medium filter 8; the output end of the multi-medium filter 8 is connected with an ultrafiltration device 9; the output end of the ultrafiltration device 9 is connected with an RO raw water tank 10; the output end of the RO raw water tank 10 is connected with an RO device 11; the output end of the RO device 11 is respectively connected with an RO water producing tank 12 and an RO concentration tank 13; the RO water producing tank 12 is connected with a recycling system, and the RO concentration tank 13 is connected with a system for concentrating water. The utility model relates to a rare earth-containing leaching wastewater recovery treatment system, which adopts a membrane separation technology to recycle part of water sources from wastewater, and the specific technical scheme comprises a pretreatment system, an RO system and the like, wherein the total water treatment amount is 10000m 3 And/d, the sewage treatment station finally produces reuse water with water of 7500m3/d and strong brine with water of 2500m 3/d. Reclaimed water after the treatment can be recycled to the production line, and rare earth gold can be recovered after the concentrated water is treatedThe system can recover 75% of water from the discharged sewage, and can be reused for industrial production, so that the water consumption of industrial production is greatly reduced, the water resource shortage is greatly relieved, and the problem of environmental pollution is solved.
Specifically, in this embodiment, the pH adjusting tank is a PE thickened plastic bucket, and according to the feedback condition of the pH of the feed liquid, the pH value of the feed liquid is adjusted by online adding of a medicament by a metering pump.
Specifically, in this embodiment, the flocculation sedimentation tank 4 is a steel rectangular tank body, and includes a clarification area and a sedimentation area, the clarification area is provided with a water inlet pipe, a central flow guide pipe, an inclined pipe and a reflecting plate, and the side wall of the sedimentation area is tightly attached to a backwash water tank, so that gravity type gravity flow operation is performed; the multi-medium filter 8 is a steel cylindrical tank body, adopts quartz sand as a filter medium and operates under pressure. In the whole treatment engineering, the multi-medium filter 8 accords with the gap distribution gradient of ideal filter materials with small upper and large lower, has high efficiency, can reach 8-10 m in filtration speed and large sewage interception capacity, can remove impurities such as muddy sand, suspended matters, colloid and the like in water and organisms such as algae, reduces mechanical damage and pollution to a reverse osmosis membrane element, and is widely applied to construction and reconstruction of sewage stations.
Specifically, in this embodiment, the filter backwash water of the multi-media filter 8 is returned to the condensate pool 2 through a pipeline. The pretreatment is mainly aimed at removing suspended matters, colloids, organic matters and other impurities in raw water, which interfere with the subsequent reverse osmosis operation. The treatment facilities comprise a raw water tank, a raw water pump, a pH adjusting tank, a flocculation sedimentation tank, a multi-medium filter, filter backwashing equipment and the like.
Specifically, in this embodiment, the ultrafiltration device 9 is connected to the raw water tank 2 through concentrated water and backwash water. The ultrafiltration device is composed of an ultrafiltration membrane separation technology, and the ultrafiltration membrane separation technology has the characteristics of small occupied area, good effluent quality, high automation range and the like. Membrane separation technology is a general term for a large class of technologies. The water treatment mainly comprises micro-filtration, ultra-filtration, nano-filtration, reverse osmosis and the like. The membrane separation products are all used for removing impurities with certain particle size in water in a physical interception way by utilizing the interception capability of specially manufactured porous materials. The accuracy of the filtration is related to the pore size of the filter itself. Ultrafiltration can remove viruses, macromolecular substances, colloids, etc. According to our engineering experience, if ultrafiltration protection is not available, the reverse osmosis system is easily affected by bacteria/macromolecular organic matters and part of flocculated substances, so that the risk of reverse osmosis pollution is increased finally, and the membrane flux is reduced when serious, so that online cleaning is not possible.
In particular, in this embodiment, the RO device 11 is a reverse osmosis device for removing most of the ions from water by using membrane separation technology. The device is a key device in a desalting system, and utilizes a membrane separation technology to remove most of ions and SiO in water 2 And the like, greatly reduces TDS. The RO series device is characterized in that a part of raw water passes through the membrane along the direction perpendicular to the membrane, salt and colloid substances in the water are concentrated on the surface of the membrane, and the rest part of raw water takes away the concentrated substances along the direction parallel to the membrane, so that the raw water is self-cleaned in the operation process. The higher the water flux of the membrane element, the higher the recovery rate, the higher the concentration degree of the membrane surface, and the concentration polarization phenomenon is generated due to the concentration effect that the solubility of substances on the membrane surface is different from the concentration of substances in the main water flow. Concentration polarization can increase the concentration of salt on the surface of the membrane, increase the osmotic pressure of the membrane, increase the salt transmittance, and consume more energy to increase the pressure of the water supply, and the membrane is recovered by adopting a cleaning method.
In conclusion, the wastewater firstly enters a pretreatment system, and the main purposes of pretreatment are to adjust the pH of feed liquid and remove suspended matters, colloid, manganese ions, iron ions, organic matters and other impurities which interfere with the subsequent reverse osmosis operation. The treatment facilities comprise a raw water tank, a raw water pump, a flocculation sedimentation tank, a multi-medium filter, filter backwashing equipment and the like.
The wastewater treated by the pH regulating system enters a flocculation sedimentation tank 4, the flocculation sedimentation tank 4 is a steel rectangular tank body, the flocculation sedimentation tank comprises a clarification area and a sedimentation area, a water inlet pipe, a central guide pipe, an inclined pipe and a reflecting plate are arranged on the clarification area, backwash water tank materials are arranged on the side of the side wall of the sedimentation area in a cling manner, gravity type self-flowing operation is performed, an indirect clean water tank 7 is arranged at the output end of the flocculation sedimentation tank, a multi-medium filter 8 is connected with the output end of the clean water tank 7, the multi-medium filter 8 is a steel cylindrical tank body, quartz sand is adopted as a filter medium, and pressure type operation is performed. In the whole treatment engineering, the filter meets the ideal filter material with small upper and large lower gap distribution gradient, the efficiency is high, the filtering speed can reach 8-10 m, the sewage interception capacity is large, and the multi-medium filter 8 can achieve the filtering effect and can be widely applied to the construction and reconstruction of sewage stations. The water treatment amount is 480m3/h, and the water outlet ensures that NTU reaches the water inlet requirement.
The effluent of the multi-medium filter 8 enters an ultrafiltration device 9, so that the main purpose is to further reduce NTU in feed liquid and ensure the water quality requirement of the subsequent advanced treatment;
ultrafiltration can remove viruses, macromolecular substances, colloids, etc. The ultrafiltration membrane element is selected according to the characteristics of water quality to select a membrane with large water permeability, good chemical stability, good pollution resistance and good mechanical strength. The ultrafiltration membrane is made of PVDF, and has strong anti-fouling capability, good chemical stability and good mechanical strength. The main body pipeline of the ultrafiltration device 9 is a UPVC pipe. The pipelines and valves in the ultrafiltration device 9 adopt UPVC pipelines and valves which are chemical grade and 1.6MPa. The service life of the membrane is more than 3 years. At any period within 3 years, the net output reaches a guaranteed value SDI less than or equal to 3. The pipeline design flow rate is 1.5-2.5 m/s so as to reduce the pressure loss through the system, and the actual running flux is that: 40LMH. The ultrafiltration device 9 is arranged on the skid-mounted frame, the membrane elements are arranged in parallel, and each row of jellyfish inlet and outlet pipes are provided with valves so as to be connected with the cleaning liquid inlet and outlet pipes during cleaning. The water pipe, water inlet pipe and water outlet pipe of each ultrafiltration membrane component are provided with sampling points and necessary detection meters, and the number and the positions can effectively monitor, diagnose and determine the defects of the system. All pipelines and joints are arranged on the frame, all brackets, fasteners, clamps and the like are also included, and the design of the frame needs to meet the local seismic intensity. The ultrafiltration membrane assembly frame is provided with a leak detection device to detect the operation condition of the membrane element. Setting DCS to control full-automatic operation. The water yield of the system can meet the operation requirements of various Reverse Osmosis (RO) working conditions. If a single membrane core has a problem, the single-row valve can be cut off to be replaced independently, and the operation of other membrane cores is not affected.
The ultrafiltration effluent is further subjected to a deep treatment desalting unit. The advanced treatment desalting unit mainly adopts a reverse osmosis process to remove substances such as soluble solids in water, so that the produced water can meet the water requirement of the reuse water.
Referring to fig. 2 and 3, the reverse osmosis membrane element is selected from membranes with high water permeability, high desalination rate, good chemical stability, good anti-pollution performance and good mechanical strength according to the water quality characteristics of the circulating water, and the membrane element is selected from SUEZ company enhanced low-pressure pollution high desalination composite membranes. Considering the time of membrane washing or maintenance required at ordinary times, the reverse osmosis total water yield is 7500m, which is designed according to the working time of 23 hours per day 3 And/d, the water yield is 75%, and the membrane flux is 22LMH.
The beneficial effects of the utility model are as follows:
1. more than 75% of water can be recovered from the discharged sewage and reused for industrial production.
2. Greatly reduces the water consumption of industrial production and greatly relieves the problem of water resource shortage.
3. Thoroughly solves the problem of environmental pollution.
4. Recovering rare earth products.
The foregoing has described in detail the technical solutions provided by the embodiments of the present utility model, and specific examples have been applied to illustrate the principles and implementations of the embodiments of the present utility model, where the above description of the embodiments is only suitable for helping to understand the principles of the embodiments of the present utility model; meanwhile, as for those skilled in the art, according to the embodiments of the present utility model, there are variations in the specific embodiments and the application scope, and the present description should not be construed as limiting the present utility model.
Claims (7)
1. A rare earth-containing leaching wastewater recovery treatment system is characterized in that: the method comprises a leaching solution raw water tank and a pH adjusting tank, wherein the raw material solution with the pH adjusted enters a flocculation sedimentation tank; the output end of the flocculation sedimentation tank is connected with a clean water tank; the output end of the clean water tank is connected with a multi-medium filter; the output end of the multi-medium filter is connected with an ultrafiltration device; the output end of the ultrafiltration device is connected with an RO raw water tank; the concentrated water output end of the ultrafiltration device returns to the raw water tank; the output end of the RO raw water tank is connected with an RO device; the output end of the RO device is respectively connected with an RO water producing tank and an RO concentration tank; the RO water producing tank is connected with a recycling system; the output end of the RO concentration tank is connected with a concentrated water system.
2. The rare earth-containing leaching wastewater recovery treatment system according to claim 1, wherein: the pH adjusting tank is a concrete water tank, the interior is subjected to corrosion prevention treatment, and the pH value of the liquid is adjusted by adopting a metering pump on-line medicament adding mode according to the pH feedback condition of the liquid.
3. The rare earth-containing leaching wastewater recovery treatment system according to claim 1, wherein: the flocculation sedimentation tank is a steel rectangular tank body and comprises a clarification area and a sedimentation area, wherein a water inlet pipe, a central flow guide pipe, an inclined pipe and a reflecting plate are arranged on the clarification area, a backwash water tank is arranged on the side of the side wall of the sedimentation area in a clinging manner, and gravity type self-flowing operation is realized.
4. The rare earth-containing leaching wastewater recovery treatment system according to claim 1, wherein: the multi-medium filter is a steel cylindrical tank body, adopts quartz sand as a filter medium and operates under pressure.
5. The rare earth-containing leaching wastewater recovery treatment system according to claim 1, wherein: and the filter backwash water of the multi-medium filter is returned to the raw water tank through a pipeline.
6. The rare earth-containing leaching wastewater recovery treatment system according to claim 1, wherein: the concentrated water/backwash water of the ultrafiltration device is returned to the raw water tank through a pipeline.
7. The rare earth-containing leaching wastewater recovery treatment system according to claim 1, wherein: the RO device is a reverse osmosis device for removing most of ions in water by a membrane separation technology.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321664516.7U CN220034289U (en) | 2023-06-28 | 2023-06-28 | Rare earth-containing leaching wastewater recovery treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321664516.7U CN220034289U (en) | 2023-06-28 | 2023-06-28 | Rare earth-containing leaching wastewater recovery treatment system |
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| CN220034289U true CN220034289U (en) | 2023-11-17 |
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| CN202321664516.7U Active CN220034289U (en) | 2023-06-28 | 2023-06-28 | Rare earth-containing leaching wastewater recovery treatment system |
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