A device for deep purification of salt lake chemical waste brine

Abstract

The utility model discloses a kind of deep purification device of salt lake chemical waste brine, including support platform, the upper end of the support platform is provided with pretreatment mechanism, the pretreatment mechanism includes the reaction cylinder fixedly connected in support platform upper surface rear end, the upper surface of the reaction cylinder is fixedly connected with first water pump in one side, the input end of the first water pump is fixedly connected with pumping pipe, the upper end of the inner wall of the reaction cylinder is fixedly connected with support plate, the upper surface of the support plate is fixedly connected with first motor in one side, the output end of the first motor is fixedly connected with driving bevel gear.The utility model is removed by setting pretreatment mechanism impurity and calcium ion easy to scale in waste brine, and by setting deodorization mechanism, waste brine's stench gas is adsorbed filtration, can effectively guarantee the continuous stable operation of equipment, and make waste brine purification product meet environmental protection etc. Requirements, conducive to subsequent processing use, reduce maintenance cost and equipment replacement frequency.

Description

Technical Field

[0001] This utility model relates to the technical field of waste brine purification equipment, and in particular to a deep purification device for waste brine from salt lake chemical industry. Background Technology

[0002] Salt lake chemical waste brine is high-salinity wastewater remaining after the extraction of useful components from salt lake resources. It contains a high concentration of useful elements, but also contains various impurities. The fundamental principle of the purification device is to deeply purify the waste brine by separating, concentrating and purifying it step by step through a series of physical and chemical methods based on the differences in the physical and chemical properties of different components in the waste brine. This not only reduces environmental harm, but also enables the reuse of water resources and the further extraction of valuable resources.

[0003] Existing purification devices for waste brine from salt lake chemical plants utilize nanofiltration and reverse osmosis membrane systems to purify and filter useful components in the waste brine, achieving salt separation and concentration. However, these membrane systems are susceptible to fouling and scaling, resulting in short lifespans and high maintenance costs. During operation, the waste brine contains not only suspended particles, colloids, and some organic matter, but also high levels of calcium and magnesium ions, leading to scaling during separation. This scaling can clog and contaminate subsequent systems, affecting the stable operation of the equipment. Furthermore, the sodium chloride recovered from the waste brine typically contains sulfides, making it unsuitable for direct use in industries such as fine chemicals. These substances are also highly corrosive, severely shortening equipment lifespan. Without proper treatment, maintenance costs and equipment replacement frequency will increase dramatically. Utility Model Content

[0004] The main purpose of this invention is to provide a deep purification device for waste brine from salt lake chemical industry, so as to overcome the shortcomings of the existing technology.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] Some embodiments of this utility model provide a deep purification device for waste brine from salt lake chemical industry, including a support platform. A pretreatment mechanism is provided at the upper end of the support platform. The pretreatment mechanism includes a reaction cylinder fixedly connected to the rear end of the upper surface of the support platform. A first water pump is fixedly connected to one side of the upper surface of the reaction cylinder. A suction pipe is fixedly connected to the input end of the first water pump. A support plate is fixedly connected to the upper end of the inner wall of the reaction cylinder. A first motor is fixedly connected to one side of the upper surface of the support plate. A driving bevel gear is fixedly connected to the output end of the first motor. The driving bevel gear meshes with a driven bevel gear. A rotating shaft is rotatably connected to the center of the support plate. A driven bevel gear is fixedly connected to the upper end of the rotating shaft. Multiple stirring blades are fixedly connected to the lower end of the rotating shaft. A feed pipe is fixedly connected to the side of the upper surface of the reaction cylinder away from the first water pump. A first liquid storage tank is fixedly connected to the front end of the upper surface of the support platform. A second water pump is fixedly connected to the outer wall of the first liquid storage tank away from the first support frame.

[0007] A first support frame is provided on one side of the support platform. A deodorization mechanism is provided at the upper end of the first support frame. The deodorization mechanism includes a liquid storage cylinder fixedly connected to the upper end of the inner walls on both sides of the first support frame. A deodorization box is fixedly connected to the upper surface of the liquid storage cylinder. An air pump is fixedly connected to the inner rear wall of the deodorization box. A first one-way valve is fixedly connected to the input end of the air pump. Multiple activated carbon sieve plates are fixedly connected to the inner front wall of the deodorization box. A second one-way valve is fixedly connected to the front end of the top surface of the liquid storage cylinder. A second liquid storage tank is fixedly connected to the rear end of the upper surface of the deodorization box. A support arm is fixedly connected to the upper end of the outer rear wall of the first support frame. A second motor is fixedly connected to the upper surface of the support arm. A drive shaft is fixedly connected to the output end of the second motor. A spiral blade is fixedly connected to the shaft of the drive shaft.

[0008] In one embodiment, a filtration mechanism is provided at the lower end of the first support frame. The filtration mechanism includes a first filter cylinder fixedly connected to the middle of the first support frame, an inlet pipe fixedly connected to the front outer wall of the first filter cylinder, a first outlet pipe fixedly connected to the rear part of the lower end of the first filter cylinder, and a discharge pipe fixedly connected to the rear outer wall of the first filter cylinder. A second filter cylinder is provided at the lower end of the reaction cylinder, a second outlet pipe fixedly connected to the front part of the lower end of the second filter cylinder, and a third outlet pipe fixedly connected to the front outer wall of the second filter cylinder. Spiral wound membrane elements are fixedly connected inside both the first and second filter cylinders.

[0009] In one embodiment, a second support frame is fixedly connected to the outer wall of the first support frame on the side away from the support platform. The second support frame is provided with a collection mechanism inside. The collection mechanism includes a plurality of collection cylinders fixedly connected to the inner walls on both sides of the second support frame. A fourth pipe valve is fixedly connected to the outer wall of the rear end of each collection cylinder.

[0010] In one embodiment, the output end of the first water pump is fixedly connected to a feeding pipe, and the end of the feeding pipe away from the first water pump is fixedly connected to a storage tank. The outer wall of the second storage tank away from the reaction tank is fixedly connected to a third water pump, and the output end of the third water pump is fixedly connected to the storage tank.

[0011] In one embodiment, the end of the feed pipe away from the first filter cylinder is fixedly connected to the liquid storage cylinder, the end of the drive shaft away from the second motor is rotatably connected to the inner wall of the front end of the liquid storage cylinder, and a sealing ring is fixedly connected to the inner wall of the rear end of the liquid storage cylinder, with the inner wall of the sealing ring tightly fitted to the outer wall of the drive shaft.

[0012] In one embodiment, a drain pipe is fixedly connected to the middle of the lower surface of the reaction cylinder, a storage tank is fixedly connected to the front end of the drain pipe, a second valve is fixedly connected to the outer wall of the storage tank on the side away from the first support frame, the output end of the second water pump is fixedly connected to the reaction cylinder, a first valve is fixedly connected to the upper end of the outer wall of the first liquid storage tank, and a third valve is fixedly connected to the outer wall of the second liquid storage tank on the side near the third water pump.

[0013] In one embodiment, the end of the drain pipe furthest from the reaction vessel is connected to the storage tank, and valves are provided at the upper ends of the drain pipe, the feed pipe, the first discharge pipe, the second discharge pipe, and the third discharge pipe.

[0014] In one embodiment, a filter screen is fixedly connected to the middle of the inner wall of the reaction vessel.

[0015] In one embodiment, the upper collecting cylinder is fixedly connected to the first discharge pipe on the side of its rear end near the first support frame, the lower collecting cylinder is fixedly connected to the second discharge pipe on its front end outer wall, and the middle collecting cylinder is fixedly connected to the third discharge pipe on its front end outer wall.

[0016] In one embodiment, the end of the discharge pipe furthest from the first filter cylinder is connected through the second filter cylinder.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] (1) The deep purification device for waste brine from salt lake chemical industry of this utility model uses a second water pump to introduce sodium carbonate solution from the first storage tank into the reaction cylinder through the output end of the water pump. At the same time, the first motor drives the driven bevel gear to rotate, thereby driving the rotating shaft to rotate and making the stirring blades rotate, so that the solution and waste brine are mixed evenly and react with calcium and magnesium ions in the waste brine to precipitate. At the same time, as the liquid level rises continuously, the precipitate produced by the reaction and the impurities in the waste brine are blocked by the filter screen in the lower layer. Then, the first water pump transports the pretreated waste brine in the upper layer into the storage cylinder, thereby pretreating the waste brine, removing impurities and easily scaled calcium and magnesium ions, and ensuring the stable operation of subsequent membrane filtration.

[0019] (2) The deep purification device for waste brine from salt lake chemical industry of this utility model introduces sodium hydroxide solution from the second storage tank into the storage cylinder through the third water pump and starts the second motor to drive the spiral blades to stir the solution in the storage cylinder. The sodium hydroxide solution reacts with hydrogen sulfide in the waste brine, thereby removing acidic odorous gases such as hydrogen sulfide. The gas in the storage cylinder is then drawn into the deodorization box by the air pump. The odorous gas is adsorbed after passing through multiple layers of activated carbon sieves. The adsorbed odorless gas returns to the storage cylinder through the second one-way valve, completing the deodorization process. This ensures that the purified waste brine product meets the requirements for environmental protection and application in fine chemical and other fields, while reducing maintenance costs and equipment replacement frequency. Attached Figure Description

[0020] Figure 1 This is an isometric view of a deep purification device for waste brine from a salt lake chemical plant, according to one embodiment of the present invention.

[0021] Figure 2 This is an isometric view of a pretreatment mechanism according to one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of a pretreatment mechanism in one embodiment of the present invention;

[0023] Figure 4 This is an isometric view of a deodorization mechanism according to one embodiment of the present invention;

[0024] Figure 5 This is an isometric view of a filtration mechanism according to one embodiment of the present invention;

[0025] Figure 6 This is an isometric view of a collection mechanism in one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Support platform;

[0028] 2. Pretreatment mechanism; 201. Reaction cylinder; 202. First water pump; 203. Feed pipe; 204. Support plate; 205. First motor; 206. Drive bevel gear; 207. Driven bevel gear; 208. Rotating shaft; 209. Stirring blades; 210. Filter screen; 211. Feed pipe; 212. First storage tank; 213. First valve; 214. Second water pump; 215. Drain pipe; 216. Storage tank; 217. Second valve; 218. Feeding pipe;

[0029] 3. Deodorization mechanism; 301. Liquid storage tank; 302. Support arm; 303. Second motor; 304. Sealing ring; 305. Drive shaft; 306. Spiral blades; 307. Deodorization box; 308. Second liquid storage tank; 309. Third pipe valve; 310. Third water pump; 311. Air pump; 312. First check valve; 313. Activated carbon sieve plate; 314. Second check valve;

[0030] 4. First support frame;

[0031] 5. Filtration mechanism; 501. First filter cartridge; 502. Spiral wound membrane element; 503. Feed pipe; 504. First discharge pipe; 505. Discharge pipe; 506. Second filter cartridge; 507. Second discharge pipe; 508. Third discharge pipe;

[0032] 6. Collection mechanism; 601. Collection cylinder; 602. Fourth pipe valve;

[0033] 7. Second support frame;

[0034] 8. Valves. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] refer to Figure 1 , Figure 2 and Figure 3This embodiment provides a deep purification device for waste brine from a salt lake chemical plant, comprising a support platform 1. A pretreatment mechanism 2 is installed at the upper end of the support platform 1. The pretreatment mechanism 2 includes a reaction cylinder 201 fixedly connected to the rear end of the upper surface of the support platform 1. A first water pump 202 is fixedly connected to one side of the upper surface of the reaction cylinder 201. A suction pipe 203 is fixedly connected to the input end of the first water pump 202. A support plate 204 is fixedly connected to the upper end of the inner wall of the reaction cylinder 201. A first motor 205 is fixedly connected to one side of the upper surface of the support plate 204. A drive bevel gear 206 is fixedly connected to the output end of the first motor 205. A rotating shaft 208 is rotatably connected to the center of the support plate 204. A driven bevel gear 207 is fixedly connected to the upper end, and multiple stirring blades 209 are fixedly connected to the lower end of the rotating shaft 208. A feed pipe 211 is fixedly connected to the side of the upper surface of the reaction cylinder 201 away from the first water pump 202. A first liquid storage tank 212 is fixedly connected to the front end of the upper surface of the support platform 1. A second water pump 214 is fixedly connected to the outer wall of the first liquid storage tank 212 away from the first support frame 4. The calcium ions in the waste brine are converted into solid precipitates through chemical reaction. Then, the pretreated waste brine is transported into the liquid storage cylinder 301 by the first water pump 202, thereby completing the pretreatment process of the waste brine. By removing impurities and easily scaled calcium ions, the stable operation of the subsequent membrane filtration is ensured.

[0037] refer to Figure 1 and Figure 4 A first support frame 4 is provided on one side of the support platform 1. A deodorization mechanism 3 is provided at the upper end of the first support frame 4. The deodorization mechanism 3 includes a liquid storage cylinder 301 fixedly connected to the upper end of the inner walls on both sides of the first support frame 4. A deodorization box 307 is fixedly connected to the upper surface of the liquid storage cylinder 301. An air pump 311 is fixedly connected to the inner wall of the rear end of the deodorization box 307. A first one-way valve 312 is fixedly connected to the input end of the air pump 311. Multiple activated carbon sieve plates 313 are fixedly connected to the inner wall of the front end of the deodorization box 307. A second one-way valve 314 is fixedly connected to the front end of the top surface of the liquid storage cylinder 301. The deodorization process is complete. A second liquid storage tank 308 is fixedly connected to the rear end of the upper surface of the box 307. A support arm 302 is fixedly connected to the upper end of the outer wall of the rear end of the first support frame 4. A second motor 303 is fixedly connected to the upper surface of the support arm 302. A drive shaft 305 is fixedly connected to the output end of the second motor 303. A spiral blade 306 is fixedly connected to the shaft of the drive shaft 305. The odor gas of the waste brine is adsorbed and filtered by the deodorization mechanism 3, and hydrogen sulfide gas is removed from it, thereby ensuring that the waste brine purification product meets the application requirements in the fields of fine chemicals, while reducing maintenance costs and equipment replacement frequency.

[0038] refer to Figure 5 and Figure 6A filtration mechanism 5 is provided at the lower end of the first support frame 4. The filtration mechanism 5 includes a first filter cylinder 501 fixedly connected to the middle of the first support frame 4. A feed pipe 503 is fixedly connected to the outer wall of the front end of the first filter cylinder 501. A first discharge pipe 504 is fixedly connected to the rear part of the lower end of the first filter cylinder 501. A discharge pipe 505 is fixedly connected to the outer wall of the rear end of the first filter cylinder 501. A second filter cylinder 506 is provided at the lower end of the reaction cylinder 201. A second discharge pipe 507 is fixedly connected to the front part of the lower end of the second filter cylinder 506. A third discharge pipe 508 is fixedly connected to the outer wall of the front end of the second filter cylinder 506. A spiral wound membrane element 502 is fixedly connected inside both the first filter cylinder 501 and the second filter cylinder 506. A first filter cylinder 502 is fixedly connected to the outer wall of the first support frame 4 on the side away from the support platform 1. The second support frame 7 has a collection mechanism 6 inside. The collection mechanism 6 includes multiple collection cylinders 601 fixedly connected to the inner walls on both sides of the second support frame 7. The outer wall of the rear end of each collection cylinder 601 is fixedly connected to a fourth pipe valve 602. The end of the discharge pipe 505 away from the first filter cylinder 501 is connected to the second filter cylinder 506. The pretreated waste brine can be filtered using a spiral wound membrane element 502, thereby achieving efficient separation and concentration of the mixed liquid. The waste brine is purified and filtered to produce monovalent salt solution, polyvalent salt solution and water. The filtered monovalent salt, polyvalent salt and water are stored separately, achieving deep purification while collecting multiple required ions to meet production needs. The waste brine that has been initially filtered is then filtered a second time, thereby achieving deep purification of the waste brine and filtering out monovalent salt and polyvalent salt solutions.

[0039] refer to Figure 3 , Figure 4 and Figure 5The output end of the first water pump 202 is fixedly connected to a feed pipe 218. The end of the feed pipe 218 away from the first water pump 202 is fixedly connected to the storage tank 301. The outer wall of the second storage tank 308 away from the reaction cylinder 201 is fixedly connected to a third water pump 310. The output end of the third water pump 310 is fixedly connected to the storage tank 301. The end of the feed pipe 503 away from the first filter cylinder 501 is fixedly connected to the storage tank 301. The end of the drive shaft 305 away from the second motor 303 is rotatably connected to the inner wall of the front end of the storage tank 301. A sealing ring 304 is fixedly connected to the inner wall of the rear end of the storage tank 301. The inner wall of the sealing ring 304 is tightly fitted to the outer wall of the drive shaft 305. A drain is fixedly connected to the middle of the lower surface of the reaction cylinder 201. A storage tank 216 is fixedly connected to the front end of the sewage pipe 215. A second valve 217 is fixedly connected to the outer wall of the storage tank 216 on the side away from the first support frame 4. The output end of the second water pump 214 is fixedly connected to the reaction cylinder 201. A first valve 213 is fixedly connected to the upper end of the outer wall of the first liquid storage tank 212. A third valve 309 is fixedly connected to the outer wall of the second liquid storage tank 308 on the side near the third water pump 310. A filter screen 210 is fixedly connected to the middle of the inner wall of the reaction cylinder 201. The rear end of the upper collection cylinder 601 is fixedly connected to the first discharge pipe 504 on the side near the first support frame 4. The front outer wall of the lower collection cylinder 601 is fixedly connected to the second discharge pipe 507. The front end of the middle collection cylinder 601... The outer wall of the end is fixedly connected to the third discharge pipe 508. The end of the drain pipe 215 away from the reaction cylinder 201 is connected to the storage tank 216. Valves 8 are provided at the upper ends of the drain pipe 215, the feed pipe 503, the first discharge pipe 504, the second discharge pipe 507, and the third discharge pipe 508. The driving bevel gear 206 meshes with the driven bevel gear 207, which can send the pretreated waste brine in the reaction cylinder 201 into the subsequent deodorization mechanism 3. At the same time, the chemical reagents in the second storage tank 308 can be sent into the storage cylinder 301 to remove hydrogen sulfide gas from the waste brine. The drive shaft 305 can rotate to drive the spiral blades 306 to stir the waste brine in the storage cylinder 301 and push it forward, sending the deodorized waste brine into the filter. In structure 5, the connection between the drive shaft 305 and the second motor 303 is sealed by the sealing ring 304 to prevent the waste brine from overflowing. Large impurities in the waste brine can be collected and discharged through the second pipe valve 217. Chemical reagents can be added to ensure the normal operation of the deodorization and pretreatment processes. At the same time, impurities and precipitates produced by the reaction in the waste brine are isolated to prevent them from entering subsequent processes. The filtered liquid is collected separately to meet production needs. The flow of waste brine can be controlled to ensure the normal operation of each process. The first motor 205 drives the drive bevel gear 206 to rotate, thereby driving the driven bevel gear 207 and the rotating shaft 208 to rotate, so that the stirring blades 209 stir the waste brine.

[0040] The working principle of the purification device in this embodiment is as follows: First, the waste brine to be purified is introduced into the feed pipe 211. Due to gravity, the waste brine flows towards the bottom of the reaction cylinder 201. Then, the second water pump 214 starts running, introducing the sodium carbonate solution in the first storage tank 212 into the reaction cylinder 201 through the output end of the water pump. At the same time, the first motor 205 starts operating, causing the bevel gear set to drive the rotating shaft 208 to rotate, thereby driving the stirring blades 209 to mix the solution and waste brine evenly, reacting with the calcium and magnesium ions in the waste brine to precipitate them. Simultaneously, due to the uneven liquid level... As the temperature rises, the precipitate produced by the reaction and large impurities in the waste brine are blocked in the lower layer by the filter screen 210. After the reaction has proceeded for a period of time, the first water pump 202 starts operating on a timer to transport the pretreated waste brine from the upper layer into the storage tank 301. At the same time, the third water pump 310, the second motor 303, and the air pump 311 start operating synchronously to circulate the sodium hydroxide solution in the second storage tank 308 into the storage tank 301 at the upper end of the first support frame 4, and the drive shaft 305 drives the spiral blades 306 to stir the solution in the storage tank 301. Sodium hydroxide solution reacts with hydrogen sulfide gas in the waste brine, thereby removing acidic odorous gases such as hydrogen sulfide. Simultaneously, gas pump 311 draws gas from the storage tank 301 into the deodorization box 307. The odorous gas is adsorbed after passing through multiple layers of activated carbon sieve plates 313. The adsorbed gas returns to the storage tank 301 via the second one-way valve 314, completing the deodorization process. Subsequently, the waste brine enters the first filter cylinder 501, where it flows through the HNF90-4040 nanofiltration membrane element's flow channel network. The water molecules and their valence... Salt ions selectively permeate through the membrane, are collected by the permeate flow channel network, and flow into the central tube to form a dilute monovalent salt solution. The desired polyvalent salts are retained by the membrane and discharged with the concentrate to form a concentrated polyvalent salt solution. This concentrated polyvalent salt solution flows through the first discharge pipe 504 from the first filter cartridge 501 into the upper collection cartridge 601 located inside the second support frame 7. The outer wall of the first support frame 4, away from the support platform 1, is fixedly connected to the second support frame 7. The dilute monovalent salt solution flows through the discharge pipe 505 into the second filter cartridge 506, where SPRO... The 380-41-LD34 type reverse osmosis membrane element flows through the flow channel network. Water molecules selectively permeate through the membrane, are collected by the product water flow channel network, and flow into the central tube to form clean water. The required monovalent salt ions are retained by the membrane and discharged with the water to form a concentrated monovalent salt solution. The concentrated monovalent salt solution flows through the second discharge pipe 507 from the second filter cartridge 506 into the lower collection cartridge 601, while the water flows through the third discharge pipe 508 from the second filter cartridge 506 into the middle collection cartridge 601, thereby completing the deep purification of waste brine.

[0041] In order to ensure that the amount of sodium carbonate and sodium hydroxide added is neither too little nor too much, pH sensors, flow regulating valves, etc. can be installed in the purification device in accordance with conventional methods in the art to control the amount of sodium carbonate and sodium hydroxide added in real time.

[0042] When using sodium bicarbonate to remove calcium ions, the calcium removal rate is generally around 95.8%, while ensuring that the calcium ion content in the product salt is below 0.37%. Chemical washing must ensure that the removal rate of hydrogen sulfide gas is above 99%. Before pretreatment, the daily standardized membrane flux decline between two cleaning cycles may exceed 1%-5%, while after pretreatment, the decline can be controlled within 0.1%-0.5%, and the chemical cleaning cycle is significantly extended. Before pretreatment, the cleaning cycle may be as short as a few days or weeks, while after pretreatment, it can be extended to 3 months, 6 months, or even longer.

[0043] The following points should be noted in this article:

[0044] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0045] 2. Where there is no conflict, the embodiments of this disclosure and the features thereof can be combined with each other to obtain new embodiments.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in this utility model shall be understood by those skilled in the art based on the specific circumstances. In addition, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation on this utility model; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deep purification device for waste brine from salt lake chemical industry, comprising a support platform (1), characterized in that: A pretreatment mechanism (2) is provided at the upper end of the support platform (1). The pretreatment mechanism (2) includes a reaction cylinder (201) fixedly connected to the rear end of the upper surface of the support platform (1). A first water pump (202) is fixedly connected to one side of the upper surface of the reaction cylinder (201). A material extraction pipe (203) is fixedly connected to the input end of the first water pump (202). A support plate (204) is fixedly connected to the upper end of the inner wall of the reaction cylinder (201). A first motor (205) is fixedly connected to one side of the upper surface of the support plate (204). A drive bevel gear (206) is fixedly connected to the output end of the first motor (205). The support plate (204) A rotating shaft (208) is rotatably connected to the center of the plate. A driven bevel gear (207) is fixedly connected to the upper end of the rotating shaft (208). The driving bevel gear (206) meshes with the driven bevel gear (207). A plurality of stirring blades (209) are fixedly connected to the lower end of the rotating shaft (208). A feed pipe (211) is fixedly connected to the side of the upper surface of the reaction cylinder (201) away from the first water pump (202). A first liquid storage tank (212) is fixedly connected to the front end of the upper surface of the support platform (1). A second water pump (214) is fixedly connected to the outer wall of the side of the first liquid storage tank (212) away from the first support frame (4). A first support frame (4) is provided on one side of the support platform (1). A deodorization mechanism (3) is provided at the upper end of the first support frame (4). The deodorization mechanism (3) includes a liquid storage cylinder (301) fixedly connected to the upper end of the inner walls on both sides of the first support frame (4). A deodorization box (307) is fixedly connected to the upper surface of the liquid storage cylinder (301). An air pump (311) is fixedly connected to the inner wall of the rear end of the deodorization box (307). A first one-way valve (312) is fixedly connected to the input end of the air pump (311). A front one-way valve (312) is fixedly connected to the inner wall of the front end of the deodorization box (307). Multiple activated carbon sieve plates (313), a second one-way valve (314) is fixedly connected to the front end of the inner top surface of the liquid storage cylinder (301), a second liquid storage tank (308) is fixedly connected to the rear end of the upper surface of the deodorization box (307), a support arm (302) is fixedly connected to the upper end of the outer wall of the rear end of the first support frame (4), a second motor (303) is fixedly connected to the upper surface of the support arm (302), a drive shaft (305) is fixedly connected to the output end of the second motor (303), and a spiral blade (306) is fixedly connected to the shaft body of the drive shaft (305).

2. The deep purification device for waste brine from salt lake chemical industry according to claim 1, characterized in that: A filtration mechanism (5) is provided at the lower end of the first support frame (4). The filtration mechanism (5) includes a first filter cylinder (501) fixedly connected to the middle of the first support frame (4). A feed pipe (503) is fixedly connected to the outer wall of the front end of the first filter cylinder (501). A first discharge pipe (504) is fixedly connected to the rear part of the lower end of the first filter cylinder (501). A discharge pipe (505) is fixedly connected to the outer wall of the rear end of the first filter cylinder (501). A second filter cylinder (506) is provided at the lower end of the reaction cylinder (201). A second discharge pipe (507) is fixedly connected to the front part of the lower end of the second filter cylinder (506). A third discharge pipe (508) is fixedly connected to the outer wall of the front end of the second filter cylinder (506). A spiral wound membrane element (502) is fixedly connected inside both the first filter cylinder (501) and the second filter cylinder (506).

3. The deep purification device for salt lake chemical waste brine according to claim 2, characterized in that: The end of the feed pipe (503) away from the first filter cylinder (501) is fixedly connected to the liquid storage cylinder (301). The end of the drive shaft (305) away from the second motor (303) is rotatably connected to the inner wall of the front end of the liquid storage cylinder (301). A sealing ring (304) is fixedly connected to the inner wall of the rear end of the liquid storage cylinder (301). The inner wall of the sealing ring (304) is tightly fitted with the outer wall of the drive shaft (305).

4. The deep purification device for waste brine from salt lake chemical industry according to claim 2, characterized in that: The end of the discharge pipe (505) away from the first filter cylinder (501) is connected to the second filter cylinder (506).

5. The deep purification device for salt lake chemical waste brine according to claim 1, characterized in that: The first support frame (4) is fixedly connected to the outer wall of the side away from the support platform (1) by a second support frame (7). The second support frame (7) is provided with a collection mechanism (6). The collection mechanism (6) includes a plurality of collection cylinders (601) fixedly connected to the inner walls of both sides of the second support frame (7). The outer wall of the rear end of each collection cylinder (601) is fixedly connected to a fourth pipe valve (602).

6. The deep purification device for waste brine from salt lake chemical industry according to claim 1, characterized in that: The output end of the first water pump (202) is fixedly connected to a feeding pipe (218), and the end of the feeding pipe (218) away from the first water pump (202) is fixedly connected to the storage tank (301). The outer wall of the second storage tank (308) away from the reaction tank (201) is fixedly connected to a third water pump (310), and the output end of the third water pump (310) is fixedly connected to the storage tank (301).

7. The deep purification device for waste brine from salt lake chemical industry according to claim 1, characterized in that: A drain pipe (215) is fixedly connected to the middle of the lower surface of the reaction cylinder (201). A storage tank (216) is fixedly connected to the front end of the drain pipe (215). A second pipe valve (217) is fixedly connected to the outer wall of the storage tank (216) away from the first support frame (4). The output end of the second water pump (214) is fixedly connected to the reaction cylinder (201). A first pipe valve (213) is fixedly connected to the upper end of the outer wall of the first liquid storage tank (212). A third pipe valve (309) is fixedly connected to the outer wall of the second liquid storage tank (308) near the third water pump (310).

8. The deep purification device for salt lake chemical waste brine according to claim 7, characterized in that: The end of the drain pipe (215) away from the reaction cylinder (201) is connected to the storage tank (216). The upper ends of the drain pipe (215), the feed pipe (503), the first discharge pipe (504), the second discharge pipe (507) and the third discharge pipe (508) are all equipped with valves (8).

9. The deep purification device for waste brine from salt lake chemical industry according to claim 8, characterized in that: The first discharge pipe (504) is fixedly connected to the side of the upper collection cylinder (601) near the first support frame (4) at the rear end of the cylinder body. The second discharge pipe (507) is fixedly connected to the front outer wall of the lower collection cylinder (601). The third discharge pipe (508) is fixedly connected to the front outer wall of the middle collection cylinder (601).

10. The deep purification device for waste brine from salt lake chemical industry according to claim 1, characterized in that: A filter screen (210) is fixedly connected to the middle of the inner wall of the reaction cylinder (201).

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