DMSO (dimethyl sulfoxide) recovery device and method based on wastewater treatment

Abstract

The invention discloses a DMSO recovery device based on wastewater treatment and a method thereof, and relates to the technical field of DMSO recovery. The DMSO recovery device based on wastewater treatment comprises a wastewater cooling cylinder, a cold water filter tank, an evaporation recovery tank and a hydrophobic membrane separation tank, and a cooling water tank and a heating water tank are arranged between the wastewater cooling cylinder and the evaporation recovery tank; the use method comprises the following steps: S1, continuously supplying water; and the continuous water supply pump pumps preliminarily filtered DMSO-containing wastewater from the interior of the preliminary filter tank, and the wastewater is subjected to precipitation and filtration treatment before entering the preliminary filter tank. According to the method, through the steps of preliminary filtration, cooling impurity separation, evaporation concentration and hydrophobic membrane separation, all links are closely connected, impurities are gradually removed, DMSO is concentrated, finally efficient separation and independent collection are achieved, and the recovery rate and purity of DMSO are remarkably improved; and the recovery speed of the DMSO is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of DMSO recovery, in particular to a DMSO recovery device based on wastewater treatment and a method thereof. BACKGROUND

[0002] DMSO (dimethyl sulfoxide) is a colorless, odorless, transparent liquid, which has the characteristics of high polarity, high hygroscopicity, high boiling point, flammability and low toxicity, etc. It can dissolve various polar organic gases except alkanes, and is miscible with water. Recycling dimethyl sulfoxide can reduce the environmental pressure to a certain extent. The recovery method of DMSO needs to be selected according to the sample properties, solvent purity requirements and equipment conditions, etc. Common technologies include distillation, membrane separation, adsorption and physical methods, etc.

[0003] Patent No. 202422044273.8 discloses a dimethyl sulfoxide recovery device. The fixed disc drives the stirring knife and the heat conducting plate to move up and down. While the impurities in the distilled water and dimethyl sulfoxide are dissolved, the stirring knife accelerates the dissolution, and the movement of the heat conducting plate makes the solution inside also uniformly heated, improving the evaporation efficiency of the solution and facilitating rapid impurity removal and recovery.

[0004] The device in the above patent has the following disadvantages: in the actual use process, although part of the impurities is dissolved, the speed of removing impurities from wastewater is accelerated, but various substances dissolved in water are often mixed in the dimethyl sulfoxide solution. Simple evaporation separation is not convenient for part of the dissolved impurities to be evaporated, which affects the recovery speed of dimethyl sulfoxide. SUMMARY

[0005] The purpose of the present application is to solve the shortcomings in the prior art and to provide a DMSO recovery device based on wastewater treatment and a method thereof.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: The application discloses a DMSO recovery device based on wastewater treatment, which comprises a wastewater cooling cylinder, a cold water filtering box, an evaporation recovery box and a hydrophobic membrane separation box, wherein cooling water boxes and heating water boxes are arranged between the wastewater cooling cylinder and the evaporation recovery box, the cooling water boxes draw water flow from the inside of the evaporation recovery box, and the water flow is introduced into the inside of the wastewater cooling cylinder after being cooled; the heating water boxes draw water flow from the inside of the cold water filtering box, and the water flow is introduced into the inside of the evaporation recovery box after being heated; a semiconductor refrigerator is arranged at the top of the cooling water box, heat generated by the semiconductor refrigerator is introduced into the inside of the hydrophobic membrane separation box, so as to increase the temperature of wastewater in the hydrophobic membrane separation box; an evaporation square pipe is arranged in the inside of the evaporation recovery box, an exhaust fan for drawing off steam is arranged at one end of the evaporation square pipe, the exhaust fan makes steam pass through the heating water box, so as to heat the water flow in the heating water box, and an electric heating module is fixedly arranged at the top of one end of the heating water box.

[0007] As a kind of preferred of the present application: the inside of the wastewater cooling cylinder is fixedly installed with spiral guide pipe, and the top end and bottom end of the wastewater cooling cylinder are respectively installed with sealing top cover and sealing base, both are connected with spiral guide pipe.

[0008] On the basis of the foregoing scheme: the top end of the sealing top cover is fixedly installed with connecting water pipe, the connecting water pipe is connected with continuous water supply pump, one side of the continuous water supply pump is provided with preliminary filtering box, one end of the inside cavity of the preliminary filtering box is provided with wastewater suction pipe connected with continuous water supply pump.

[0009] As a kind of preferred of the present application: one side of the top end of the cold water filtering box is fixedly connected with wastewater guide pipe, the wastewater guide pipe is fixedly installed at the bottom end of the sealing base; and the other side of the top end of the cold water filtering box is equidistantly installed with a plurality of particle filtering plates with mesh size increasing in sequence.

[0010] As a kind of preferred of the present application: both ends of the evaporation square pipe are fixedly connected with guide connecting pipe and evaporation discharge pipe, both extend outwardly through the box body of the evaporation recovery box, and the extension end of the guide connecting pipe is connected with the cold water filtering box.

[0011] On the basis of the foregoing scheme: the extension end of the evaporation discharge pipe is fixedly installed with flow control valve, and the flow control valve is fixedly installed at the top of one end of the hydrophobic membrane separation box.

[0012] As a kind of preferred of the present application: a DMSO discharge port is formed at the bottom of one end of the hydrophobic membrane separation box, a hydrophobic membrane module is fixedly installed in the inside of the end, a wastewater discharge pipe is fixedly connected with the box body of the hydrophobic membrane separation box, a sealing head is arranged in the inside of the wastewater discharge pipe, and a heating connecting pipe is fixedly installed in the inside of the hydrophobic membrane separation box.

[0013] As a kind of preferred of the present application: one end of the cooling water tank is fixedly installed with water pump, the other end is fixedly installed with booster water pump, the outlet of the booster water pump is fixedly installed with cold water supply pipe, and the cold water supply pipe is connected with waste water cooling cylinder.

[0014] As a kind of preferred of the present application: one end of the heating water tank is fixedly installed with cold water discharge pipe connected with waste water cooling cylinder, the other end is fixedly installed with flow guide water pump, the outlet of the flow guide water pump is installed with hot water guide pipe, and the hot water guide pipe is connected with evaporation recovery tank.

[0015] A use method of DMSO recovery device based on waste water treatment, comprising the following steps: S1: continuously supplying water; the continuous water supply pump extracts the preliminary filtered waste water containing DMSO from the inside of the preliminary filtration tank, and the waste water is subjected to sedimentation and filtration treatment before entering the preliminary filtration tank; S2: waste water cooling; the continuous water supply pump guides the waste water into the inside of the spiral guide pipe, so that the dissolved impurities are cooled and precipitated, and then the waste water is guided into the inside of the cold water filtration tank to filter the precipitated impurities; S3: evaporation separation; the filtered waste water in the inside of the cold water filtration tank is guided into the inside of the evaporation square pipe to evaporate water; S4: hydrophobic membrane separation; the waste water in the evaporation part is guided into the inside of the hydrophobic membrane separation tank to separate DMSO and water by the hydrophobic membrane module; On the basis of the foregoing scheme: the cooling water tank extracts water flow from the inside of the evaporation recovery tank by water pump, cools the water flow by semiconductor refrigerator, and guides the low-temperature water flow into the inside of the waste water cooling cylinder by booster water pump; On the basis of the foregoing scheme: the heating water tank receives the cold water discharged from the waste water cooling cylinder by cold water discharge pipe, heats the cold water to a temperature of 90-100 DEG C by electric heating module, and guides the hot water into the inside of the evaporation recovery tank by flow guide water pump to heat the waste water in the inside of the evaporation square pipe; On the basis of the foregoing scheme: the water vapor evaporated in the inside of the evaporation square pipe is guided into the cold water inlet end of the heating water tank by exhaust fan to condense and liquefy the water vapor; On the basis of the foregoing scheme: the heat generated by the semiconductor refrigerator heats the DMSO solution after evaporation of water by heating connection pipe.

[0016] The present application has the following advantages: The present application removes impurities and concentrates DMSO gradually through preliminary filtration, cooling and impurity precipitation, evaporation and concentration and hydrophobic membrane separation, finally realizes efficient separation and separate collection, significantly improves the recovery rate and purity of DMSO, and improves the recovery speed of DMSO.

[0017] The wastewater cooling cylinder adopts a spiral guide pipe structure, prolongs the wastewater flow path, accelerates heat release; in cooperation with the countercurrent heat exchange of the cooling water tank, the wastewater can be rapidly cooled, and the dissolved impurities are promoted to be analyzed and discharged; the evaporation side pipe of the evaporation recovery tank keeps the upper part empty by the wastewater guide speed, which is beneficial to the steam flow; the slow flow frame plate is inclined to prolong the wastewater residence time, the heating connecting plate is directly contacted and heated, and the evaporation efficiency is improved.

[0018] The hydrophobic film module is fixed on both sides by limiting net plates, combined with the heat dissipation fins of the heating connecting pipe and the waste heat of the semiconductor refrigerator, the temperature in the tank is improved, the separation activity of DMSO and water molecules is enhanced, and the recovery rate is improved; the heat of the heat release section of the semiconductor refrigerator and the steam condensation heat are both used for heating link, which significantly reduces the additional energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The three-dimensional structure diagram of the overall assembly of the application Figure One .

[0020] Figure 2 The three-dimensional structure diagram of the overall assembly of the application Figure Two .

[0021] Figure 3 The three-dimensional structure diagram of the overall assembly of the application Figure Three .

[0022] Figure 4 The three-dimensional structure diagram of the overall assembly of the application Figure Four .

[0023] Figure 5 The three-dimensional structure diagram of the overall assembly of the application

[0024] Figure 6 The three-dimensional structure diagram of the overall assembly of the application Figure 5 The front plane structure schematic diagram.

[0025] In the figure: 1, preliminary filter box; 2, continuous water supply pump; 3, waste water cooling cylinder; 4, cold water filter box; 5, evaporation recovery box; 6, hydrophobic membrane separation box; 7, water pump; 8, cooling water tank; 9, booster water pump; 10, heating water tank; 11, water guide pump; 12, waste water suction pipe; 13, connecting water pipe; 14, sealing top cover; 15, drainage guide pipe; 16, water inlet guide pipe; 17, sealing base; 18, waste water guide pipe; 19, particle filter plate; 20, impurity collection box; 21, evaporation discharge pipe; 22, flow control valve; 23, heating connecting pipe; 24, hydrophobic membrane module; 25, semiconductor refrigerator; 26, hot air guide pipe; 27, hot air concentrating pipe; 28, cold water supply pipe; 29, cold water discharge pipe; 30, electric heating module; 31, hot water guide pipe; 32, air suction sleeve; 33, sealing sleeve; 34, exhaust guide pipe; 35, impurity guide pipe; 36, sealing head one; 37, waste water discharge pipe; 38, sealing head two; 39, spiral guide pipe; 40, evaporation square pipe; 41, guide connecting pipe; 42, heating connecting plate; 43, steam discharge pipe; 44, limiting mesh plate; 45, exhaust fan. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0027] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0028] A DMSO recovery device based on waste water treatment, as shown in Figures 1 to 6 The cooling water tank 8 and the heating water tank 10 are arranged between the waste water cooling cylinder 3 and the evaporation recovery box 5; the waste water cooling cylinder 3 is used to rapidly cool the waste water, so that the dissolved substances in the waste water are re-precipitated; the cold water filter box 4 is used to filter the particles precipitated in the waste water, so as to reduce the content of the dissolved substances; the evaporation recovery box 5 is used to heat the filtered waste water, so that the temperature of the waste water is increased to 90-100 degrees Celsius, so that a large amount of water in the waste water is evaporated, and the concentration of DMSO is increased; the hydrophobic membrane separation box 6 is used to separate DMSO from the concentrated waste water, so as to collect the DMSO alone, and improve the recovery effect of DMSO.

[0029] The inside of the wastewater cooling cylinder 3 is fixedly provided with a spiral guide pipe 39 for guiding the wastewater to release heat and reduce the temperature of the wastewater; the top and bottom ends of the wastewater cooling cylinder 3 are respectively provided with a sealing top cover 14 and a sealing base 17, both of which are connected with the spiral guide pipe 39; and the top of the outer wall of one side of the wastewater cooling cylinder 3 is fixedly connected with a drainage guide pipe 15, and the bottom of the outer wall of the same side is fixedly connected with a water inlet guide pipe 16.

[0030] The top end of the sealing top cover 14 is fixedly provided with a connecting water pipe 13 connected with a continuous water supply pump 2; one side of the continuous water supply pump 2 is provided with a preliminary filtering box 1; one end of the inner cavity of the preliminary filtering box 1 is provided with a wastewater pumping pipe 12 connected with the continuous water supply pump 2; the continuous water supply pump 2 pumps wastewater from the inside of the preliminary filtering box 1 and then guides the wastewater into the inside of the spiral guide pipe 39 through the connecting water pipe 13.

[0031] The other end of the inner cavity of the preliminary filtering box 1 is welded with a filter screen for filtering the wastewater; a plurality of slow-flow partition plates are equidistantly arranged between the filter screen and the wastewater pumping pipe 12; the bottom ends of the plurality of slow-flow partition plates are welded to the inner wall of the bottom end of the preliminary filtering box 1; the top ends of the plurality of slow-flow partition plates are gradually lowered in height; and the slow-flow partition plate closest to the filter screen is the highest; thereby realizing the filtration and gradual precipitation of impurities in the wastewater.

[0032] The top end of the cold water filtering box 4 is fixedly provided with a connecting box cover; one side of the top end of the connecting box cover is fixedly connected with a wastewater guide pipe 18 fixedly installed at the bottom end of the sealing base 17 and in communication with the spiral guide pipe 39; and the other side of the top end of the cold water filtering box 4 is equidistantly provided with three particle filtering plates 19 of gradually increasing mesh size, the mesh sizes of which are 200 mesh, 300 mesh and 400 mesh respectively; and the particle filtering plate 19 of 200 mesh is closest to the wastewater guide pipe 18.

[0033] The bottom end of the cold water filtering box 4 is integrally formed with an impurity collecting box 20; the inner cavity of the impurity collecting box 20 is divided into three parts corresponding to the three particle filtering plates 19 respectively for collecting the impurities filtered by the three particle filtering plates 19 respectively; and the side wall of each of the impurity collecting boxes 20 corresponding to the three particle filtering plates 19 is welded with an impurity guide-out pipe 35 fixedly provided with a sealing head I 36 inside; the impurities filtered by the particle filtering plates 19 are guided out through the impurity guide-out pipe 35 by removing the sealing head I 36.

[0034] The inside of the evaporation recovery box 5 is provided with an evaporation square pipe 40; the two ends of the evaporation square pipe 40 are respectively fixedly connected with a guide connecting pipe 41 and an evaporation discharge pipe 21; the speed of the guide connecting pipe 41 guiding the wastewater is set to be one third of the speed of the evaporation discharge pipe 21 discharging the wastewater (which can be adjusted according to actual needs); the wastewater in the inside of the evaporation square pipe 40 is always in a state of being unable to be filled, i.e. the upper part of the inner cavity of the evaporation square pipe 40 is always in an empty state, thereby facilitating the flow of steam.

[0035] The guide connecting pipe 41 and the evaporation discharge pipe 21 both extend through the tank body of the evaporation recovery tank 5 and extend outward, the extending end of the guide connecting pipe 41 is connected with the cold water filtering tank 4, and the connecting position is arranged at the bottom end of the cold water filtering tank 4, so that the filtered waste water can be quickly introduced into the evaporation square pipe 40.

[0036] Two groups of flow slowing frame plates are welded on the inner wall of the bottom end of the evaporation recovery tank 5, each group of flow slowing frame plates is equidistantly arranged as a plurality of flow slowing frame plates, one end of each flow slowing frame plate is inclined to the direction of the guide connecting pipe 41, and the evaporation square pipe 40 is fixedly installed on the top end of the two groups of flow slowing frame plates; and a mounting top cover is fixedly installed on the top end of the evaporation recovery tank 5.

[0037] A plurality of heating connecting plates 42 are integrally formed on the top end of the evaporation square pipe 40, the bottom end of each heating connecting plate 42 is inserted into the evaporation square pipe 40 and fully contacts with the waste water; and a steam discharge pipe 43 is welded on the top end of the evaporation square pipe 40 close to the evaporation discharge pipe 21, the top end of the steam discharge pipe 43 extends through the mounting top cover and extends upward.

[0038] The top end of the extending end of the steam discharge pipe 43 is fixedly installed with an air extraction sleeve 32, the inner cavity of the air extraction sleeve 32 is fixedly installed with an air extraction fan 45 for extracting steam, and the top end of the air extraction sleeve 32 is fixedly installed with a sealing sleeve 33, and the top end of the sealing sleeve 33 is fixedly installed with an air exhaust pipe 34, so that the steam evaporated in the evaporation square pipe 40 can be smoothly discharged.

[0039] The extending end of the evaporation discharge pipe 21 is bent by 90 degrees downward, and a flow control valve 22 is fixedly installed on the bottom of the bent end, and the flow control valve 22 is fixedly installed on the top of one end of the hydrophobic membrane separation tank 6.

[0040] A DMSO discharge port is arranged on the other end of the hydrophobic membrane separation tank 6, and a hydrophobic membrane module 24 is fixedly installed in the other end of the hydrophobic membrane separation tank 6, and limiting net plates 44 are arranged on both sides of the hydrophobic membrane module 24, and the limiting net plates 44 are welded on the inner wall of the hydrophobic membrane separation tank 6; and a waste water discharge pipe 37 is fixedly connected with the tank body of one side of the hydrophobic membrane separation tank 6, and a sealing head 38 is installed in the waste water discharge pipe 37, and the waste water discharge pipe 37 and the DMSO discharge port are arranged on both sides of the hydrophobic membrane module 24, and are used for discharging waste water separated from DMSO.

[0041] A heating connecting pipe 23 is fixedly installed in the hydrophobic membrane separation tank 6, one end of the heating connecting pipe 23 is arranged on the top end of the hydrophobic membrane separation tank 6, and the other end of the heating connecting pipe 23 extends through the end tank body of the hydrophobic membrane separation tank 6 (the end away from the DMSO discharge port), and a plurality of heat dissipation fins are equidistantly welded on the outer wall of the part of the pipe body in the hydrophobic membrane separation tank 6.

[0042] The cooling water tank 8 extracts water flow from the inside of the evaporation recovery tank 5, and after cooling, introduces it into the inside of the waste water cooling cylinder 3. The heating water tank 10 extracts water flow from the inside of the cold water filter tank 4, and after heating, introduces it into the inside of the evaporation recovery tank 5. The waste water enters from the top of the waste water cooling cylinder 3 and flows out from the bottom. The water flow in the cooling water tank 8 flows into the waste water cooling cylinder 3 from the bottom and flows out from the top, fully ensuring the cooling effect of the waste water cooling cylinder 3 on the waste water, so that the temperature of the waste water output by the spiral guide pipe 39 is reduced to three to eight degrees Celsius.

[0043] One end of the cooling water tank 8 is fixedly installed with a water pump 7, and the other end is fixedly installed with a booster water pump 9. The water pump 7 extracts water flow from the lower part of one end of the evaporation recovery tank 5 close to the cold water filter tank 4. The outlet of the booster water pump 9 is fixedly installed with a cold water supply pipe 28. The cold water supply pipe 28 is connected with the water inlet guide pipe 16 of the waste water cooling cylinder 3, ensuring that low-temperature water flow can be continuously introduced into the waste water cooling cylinder 3.

[0044] A semiconductor refrigerator 25 is arranged on the top of the cooling water tank 8. The heat absorption section of the semiconductor refrigerator 25 absorbs the heat of the water flow in the cooling water tank 8. The model of the semiconductor refrigerator 25 is selected to be equipped with a heat dissipation fan. The air outlet of the heat dissipation fan is installed with a hot air guide pipe 26. The end of the hot air guide pipe 26 is fixedly installed with a hot air concentrating pipe 27. The end of the hot air concentrating pipe 27 is fixedly connected with the heating connecting pipe 23. The heat released by the heat release section of the semiconductor refrigerator 25 is introduced into the hydrophobic membrane separation tank 6 through the heating connecting pipe 23, so as to increase the temperature of the waste water in the hydrophobic membrane separation tank 6, increase the activity of DMSO molecules, make them separate from water molecules quickly, and ensure the recovery effect of DMSO.

[0045] One end of the heating water tank 10 is fixedly installed with a cold water discharge pipe 29 connected with the waste water discharge guide pipe 15 of the waste water cooling cylinder 3. The other end is fixedly installed with a flow guide water pump 11. The outlet of the flow guide water pump 11 is installed with a hot water guide pipe 31. The hot water guide pipe 31 is welded to one end of the evaporation recovery tank 5 away from the cold water filter tank 4.

[0046] The exhaust guide pipe 34 passes through the heating water tank 10. The part of the exhaust guide pipe 34 in the heating water tank 10 is close to the cold water discharge pipe 29, heats the water flow introduced by the cold water discharge pipe 29, and at the same time, uses the part of the cold water to condense the steam into liquid, reducing heat waste. The top of one end of the heating water tank 10 close to the flow guide water pump 11 is fixedly installed with an electric heating module 30. The electric heating module 30 is arranged as a plurality of equidistantly arranged electric heating rods, which heat the cold water introduced by the cold water discharge pipe 29, so as to rapidly increase the temperature of the cold water.

[0047] The water flow in the heating water tank 10 flows into the evaporation recovery tank 5 from the waste water outlet end of the evaporation recovery tank 5 and flows out from the other end. The evaporation recovery tank 5 is relatively long (eight to ten meters are arranged). Under the cooperation of the slow-flowing frame plate and the heating connecting plate 42, the waste water flowing into the evaporation pipe 40 is fully heated.

[0048] The device is directly controlled by an industrial computer, and the continuous water supply pump 2 is controlled by the industrial computer to control the water supply speed; temperature sensor one and temperature sensor two are respectively installed on the drainage guide pipe 15 and the water inlet guide pipe 16, temperature sensor two is used to detect the water inlet temperature of the wastewater cooling cylinder 3, and temperature sensor one is used to detect the water outlet temperature of the wastewater cooling cylinder 3.

[0049] Temperature sensor three is installed on the wastewater guide pipe 18, which is used to detect the temperature of the spiral guide pipe 39 discharging wastewater; temperature sensor four is installed on the guide connecting pipe 41, which is used to detect the temperature of the concentrated wastewater; temperature sensor five is installed on the hot water guide pipe 31, which is used to detect the temperature of the hot water introduced into the evaporation recovery tank 5.

[0050] The unit flow of the water output of the water pump 7, the booster water pump 9 and the flow guide water pump 11 is the same, which is directly controlled by the industrial computer; the working power of the semiconductor refrigerator 25 and the electric heating module 30 is directly controlled by the industrial computer, and the air flow output speed of the exhaust fan 45 is directly controlled by the industrial computer.

[0051] The inside of the evaporation square pipe 40 is provided with a liquid level sensor for detecting the liquid level height in the evaporation square pipe 40, so as to avoid the wastewater from filling the evaporation square pipe 40 and then overflowing through the steam exhaust pipe 43, thereby affecting the exhaust fan 45.

[0052] The flow control valve 22 is set as an electromagnetic valve, which is controlled by the industrial computer to open and close, when the value fed back to the industrial computer by the liquid level sensor reaches the predetermined upper limit, the industrial computer controls the flow control valve 22 to open, and the concentrated wastewater is introduced into the hydrophobic membrane separation tank 6; when the feedback value reaches the predetermined lower limit, the flow control valve 22 is closed.

[0053] The industrial computer adjusts the power of the semiconductor refrigerator 25 (refrigeration effect) according to the data fed back by the temperature sensor one and the temperature sensor two, adjusts the power of the electric heating module 30 (heating effect) according to the data fed back by the temperature sensor five, adjusts the wastewater supply speed of the continuous water supply pump 2 according to the data fed back by the temperature sensor three, the higher the temperature, the lower the water supply speed; at the same time, when the flow control valve 22 is opened, the water supply speed of the continuous water supply pump 2 is reduced to one third of the normal speed (normal speed: the water supply speed when the value fed back by the temperature sensor three is three to eight degrees Celsius).

[0054] The wastewater cooling cylinder 3, the evaporation recovery tank 5, the cooling water tank 8, the heating water tank 10, the hot air guide pipe 26, the hot air concentrating pipe 27, the cold water supply pipe 28 and the hot water guide pipe 31 are all subjected to heat preservation treatment, such as covering with heat preservation cotton.

[0055] A method for using a DMSO recovery device based on wastewater treatment, for operating a DMSO recovery device based on wastewater treatment described in embodiment one, comprising the following steps: S1: continuous water supply; the continuous water supply pump 2 extracts the primary filtration DMSO-containing wastewater from the inside of the primary filtration tank 1, and the wastewater is filtered and slowly precipitated inside the primary filtration tank 1 to avoid impurities affecting the continuous water supply pump 2; the wastewater is subjected to sedimentation and filtration treatment before entering the primary filtration tank 1 to filter out solid impurities existing at room temperature.

[0056] S2: wastewater cooling; the continuous water supply pump 2 guides the wastewater into the inside of the spiral guide pipe 39 to cool and precipitate the dissolved impurities, and then guides the wastewater into the inside of the cold water filtration tank 4 to filter out the precipitated impurities; the cooling water tank 8 extracts the water flow from the inside of the evaporation recovery tank 5 through the water pump 7, cools the water flow through the semiconductor refrigerator 25, and guides the low-temperature water flow into the inside of the wastewater cooling cylinder 3 through the booster water pump 9 to reduce the temperature of the wastewater to three to eight degrees Celsius, so that the impurities dissolved in the wastewater can be precipitated (according to the different impurities in the wastewater, the precipitation temperature can be adjusted to facilitate reasonable changes according to the actual situation).

[0057] S3: evaporation separation; the filtered wastewater in the cold water filtration tank 4 is guided into the inside of the evaporation square pipe 40 to evaporate the water; the heating water tank 10 receives the cold water exported by the wastewater cooling cylinder 3 through the cold water discharge pipe 29, heats the cold water through the electric heating module 30 to increase the temperature to ninety to one hundred degrees Celsius, and guides the hot water into the inside of the evaporation recovery tank 5 through the water guide pump 11 to heat the wastewater in the evaporation square pipe 40; the water vapor evaporated in the evaporation square pipe 40 is guided into the cold water inlet end of the heating water tank 10 through the exhaust fan 45 to condense and liquefy the water vapor.

[0058] S4: hydrophobic membrane separation; the wastewater in the evaporation wastewater is guided into the inside of the hydrophobic membrane separation tank 6, and the DMSO and water are separated through the hydrophobic membrane module 24; the heat generated by the semiconductor refrigerator 25 heats the DMSO solution after evaporation of the water through the heating connection pipe 23.

[0059] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A DMSO recovery device based on wastewater treatment, comprising a wastewater cooling tank (3), a cold water filter box (4), an evaporation recovery box (5), and a hydrophobic membrane separation box (6), characterized in that: A cooling water tank (8) and a heating water tank (10) are provided between the wastewater cooling cylinder (3) and the evaporation recovery tank (5). The cooling water tank (8) draws water from inside the evaporation recovery tank (5), cools it, and then introduces it into the wastewater cooling cylinder (3). The heating water tank (10) draws water from inside the cold water filter tank (4), heats it, and then introduces it into the evaporation recovery tank (5). A semiconductor cooler (25) is provided on the top of the cooling water tank (8). The semiconductor cooler (25) releases... The released heat is introduced into the interior of the hydrophobic membrane separation box (6) to increase the temperature of the wastewater inside the hydrophobic membrane separation box (6); the interior of the evaporation recovery box (5) is equipped with an evaporation square tube (40), and one end of the evaporation square tube (40) is equipped with an exhaust fan (45) for extracting steam. The exhaust fan (45) causes steam to pass through the heating water tank (10) to heat the water flow inside the heating water tank (10). An electric heating module (30) is fixedly installed on the top of one end of the heating water tank (10).

2. The DMSO recovery device based on wastewater treatment according to claim 1, characterized in that: The wastewater cooling cylinder (3) is fixedly installed with a spiral guide pipe (39), and the top and bottom of the wastewater cooling cylinder (3) are respectively equipped with a sealing top cover (14) and a sealing base (17), both of which are connected to the spiral guide pipe (39).

3. The DMSO recovery device based on wastewater treatment according to claim 2, characterized in that: A connecting water pipe (13) is fixedly installed on the top of the sealed top cover (14). The connecting water pipe (13) is connected to a continuous water supply pump (2). A preliminary filter box (1) is provided on one side of the continuous water supply pump (2). A wastewater pumping pipe (12) connected to the continuous water supply pump (2) is provided at one end of the inner cavity of the preliminary filter box (1).

4. The DMSO recovery device based on wastewater treatment according to claim 1, characterized in that: A wastewater conduit (18) is fixedly connected to one side of the top of the cold water filter box (4), and the wastewater conduit (18) is fixedly installed at the bottom of the sealing base (17); and multiple particle filter plates (19) with successively increasing mesh size are installed at equal intervals on the other side of the top of the cold water filter box (4).

5. The DMSO recovery device based on wastewater treatment according to claim 1, characterized in that: The two ends of the evaporation square tube (40) are respectively fixedly connected to a guide connecting pipe (41) and an evaporation discharge pipe (21), both of which penetrate the body of the evaporation recovery box (5) and extend outward. The extended end of the guide connecting pipe (41) is connected to the cold water filter box (4).

6. The DMSO recovery device based on wastewater treatment according to claim 5, characterized in that: A flow control valve (22) is fixedly installed at the extension end of the evaporation discharge pipe (21), and the flow control valve (22) is fixedly installed on the top of one end of the hydrophobic membrane separation box (6).

7. A DMSO recovery device based on wastewater treatment according to claim 1, characterized in that: The bottom of one end of the hydrophobic membrane separation box (6) is provided with a DMSO outlet, and a hydrophobic membrane module (24) is fixedly installed inside the end. A wastewater discharge pipe (37) is fixedly connected to one side of the hydrophobic membrane separation box (6), and a sealing head (38) is installed inside the wastewater discharge pipe (37). A heating connection pipe (23) is fixedly installed inside the hydrophobic membrane separation box (6).

8. A DMSO recovery device based on wastewater treatment according to claim 1, characterized in that: A water pump (7) is fixedly installed at one end of the cooling water tank (8), and a booster water pump (9) is fixedly installed at the other end. A cold water supply pipe (28) is fixedly installed at the outlet of the booster water pump (9), and the cold water supply pipe (28) is connected to the wastewater cooling cylinder (3).

9. A DMSO recovery device based on wastewater treatment according to claim 1, characterized in that: One end of the heating water tank (10) is fixedly installed with a cold water discharge pipe (29) connected to the wastewater cooling cylinder (3), and the other end is fixedly installed with a guide water pump (11). The outlet of the guide water pump (11) is equipped with a hot water guide pipe (31), which is connected to the evaporation recovery tank (5).

10. A method of using a DMSO recovery device based on wastewater treatment according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Continuous water supply; The continuous water supply pump (2) draws DMSO-containing wastewater from the interior of the primary filter box (1), which undergoes sedimentation and filtration treatment before entering the primary filter box (1); S2: Wastewater cooling; The continuous water supply pump (2) introduces wastewater into the spiral guide pipe (39) so that the dissolved impurities are cooled and precipitated, and then introduced into the cold water filter box (4) for precipitated impurity filtration. S3: Evaporation separation; The wastewater filtered inside the cold water filter box (4) is introduced into the evaporation square tube (40) for water evaporation; S4: Hydrophobic membrane separation; the wastewater from the evaporation section is introduced into the hydrophobic membrane separation box (6), and DMSO and water are separated by the hydrophobic membrane module (24).

Images