Refined sugar resin regeneration salt-containing waste liquid pretreatment device

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a refined sugar resin regeneration salt-containing waste liquid pretreatment device which comprises an adjusting tank and a transfer pump communicated with the adjusting tank, and further comprises an electric flocculation tank, a water inlet, a water outlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, an electrode plate is arranged in the electric flocculation tank, a direct-current power supply electrically connected with the electrode plate is arranged on the electric flocculation tank, and a friction ball for cleaning the electrode plate is also arranged in the electric flocculation tank. A water outlet tank is fixedly arranged on one side of the electric flocculation tank. The device is simple in structure, most COD (Chemical Oxygen Demand), chromaticity and colloid impurities which are difficult to biochemically degrade in the waste liquid are removed before biochemical treatment and desalting treatment through efficient pretreatment, the subsequent biochemical treatment load is reduced, the biodegradability of the waste liquid is improved, the removal rate of organic matters and chromaticity is increased, obstacles are removed for subsequent biochemical treatment, and the biochemical treatment efficiency is improved. The higher emission standard is ensured, and the use by people is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a pretreatment device for saline waste liquid from refined sugar resin regeneration. Background Technology

[0002] With the improvement of food and catering quality in my country, consumers have placed higher demands on the quality of refined sugar. Although starting relatively late, domestic sugar companies have successively introduced advanced refined sugar production equipment in recent years, providing the market with high-quality refined sugar products that achieve higher removal rates of sucrose impurities and color, more uniform crystal particle size, and standard moisture content. Among these processes, sugar decolorization is the most crucial step in refined sugar production. Ion exchange resins are used to decolorize the sugar solution, achieving a decolorization rate of 80%–90%. This allows the syrup to be refined into refined white sugar with a purity of 25 IU (the national standard value for refined sugar), meeting or exceeding national standards. In refined sugar plants, the ion exchange resin is housed in cylindrical tanks. The syrup is pumped into the decolorizing resin tank. As the syrup comes into contact with the resin, impurities and pigments are adsorbed, purifying the syrup. The decolorizing resin adsorbs the pigments and impurities from the syrup. After processing a certain amount of water, the resin's adsorption capacity gradually decreases until it becomes saturated. When the adsorption capacity drops to a certain level, the resin needs to be regenerated before the next purification cycle can begin. Decolorizing resin regeneration involves washing and regenerating the resin with a regenerating solution containing a certain amount of 8-9% brine to restore it to its optimal performance. Ion exchange resin decolorization systems typically include a recovery system to recover syrup and high-concentration brine; the portion that cannot be recovered is discharged. This method serves as a pretreatment device for this high-COD, high-salt wastewater discharge. The wastewater has a very high concentration of pollutants and is a complex wastewater containing sugars, NaCl, a large amount of polyphenolic pigments, and heterocyclic organic compounds. Typically, it contains CODcr of 15000-24000 mg / L, NaCl of 1.5-3%, a color of 2300-3500 times its normal value, and a pH between 6.5 and 7.0.

[0003] In the existing technology, although the subsequent biochemical treatment and RO membrane evaporation desalination are relatively mature technologies for the treatment of high-concentration saline waste liquid, the biggest problem for the treatment of refined sugar resin regeneration waste liquid is that it has high salt content, high color, toxicity and harmfulness, and many difficult-to-biodegrade substances. Without efficient pretreatment devices, the waste liquid will cause difficulties and blockages in subsequent unit processes and even the collapse of the biological activated sludge system. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies. While subsequent biochemical treatment and RO membrane evaporation desalination are relatively mature technologies for treating high-concentration saline wastewater, the biggest problem in treating refined sugar resin regeneration wastewater is its high salt content, high color, toxicity, harmful substances, and numerous difficult-to-biodegrade substances. Without an efficient pretreatment device, the wastewater can cause difficulties and blockages in subsequent unit processes, and even lead to the collapse of the biological activated sludge system. Therefore, this invention proposes a pretreatment device for refined sugar resin regeneration saline wastewater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pretreatment device for saline wastewater from refined sugar resin regeneration, comprising a regulating tank and a transfer pump connected to the regulating tank, and further comprising:

[0007] An electrocoagulation tank is located next to a transfer pump. An inlet is provided on one side of the electrocoagulation tank, and an inlet pipe is connected to the transfer pump. An electrode plate is provided inside the electrocoagulation tank, and a DC power supply electrically connected to the electrode plate is provided on the electrocoagulation tank. An outlet tank is fixedly provided on one side of the electrocoagulation tank, and a circulating water outlet is provided on one side of the outlet tank. A reaction flocculation tank is connected to one side of the circulating water outlet. A pH meter is provided inside the reaction flocculation tank, and an air flotation tank is provided next to the reaction flocculation tank. A pipe body is connected between the reaction flocculation tank and the air flotation tank. A pipe mixer and a pH meter are provided on the inlet pipe.

[0008] The sludge scraping assembly, located on the flotation tank, is used to scrape off the sludge produced after water treatment.

[0009] A cleaning component, located on the air flotation tank, is used to clean the sludge scraping component.

[0010] Furthermore, the slag scraping assembly includes guide grooves symmetrically arranged at both ends of the top surface of the flotation tank. An electric push rod is fixedly installed on one side wall of each of the two guide grooves. A guide block is fixedly connected to one end of each of the two electric push rods. The two guide blocks are slidably connected to the two guide grooves respectively. A bracket is fixedly installed on the top of the two guide blocks. By utilizing the sliding cooperation between the two guide blocks and the two guide grooves, the movement trajectory of the bracket can be limited, so that it can maintain horizontal movement.

[0011] Furthermore, an electric push rod two is vertically fixed on the bracket, and a scraper plate is fixedly connected to the bottom end of the electric push rod two. The electric push rod two drives the scraper plate to descend or rise vertically.

[0012] Furthermore, the cleaning assembly includes two symmetrically fixed support plates fixedly installed on the protruding surface of one end of the air flotation tank. A rotating rod is rotatably connected between the two support plates. A motor is fixedly installed on one side of one of the support plates. The output shaft of the motor is fixedly connected to the rotating rod. A flipping plate is fixedly connected to the rotating rod. When the rotating rod rotates, it can drive the flipping plate to rotate.

[0013] Furthermore, the flipping plate is provided with two cavities, and a buffer spring is fixedly connected to one side wall of each of the two cavities. A buffer plate is fixedly connected to one end of each of the two buffer springs, and a buffer rod is fixedly connected to one side of each of the two buffer plates. The two buffer rods are slidably connected to the flipping plate, and a cleaning plate is fixedly connected to one end of each of the two buffer rods. When the cleaning plate rotates and contacts the slag scraper, it can scrape off the floating slag on the slag scraper.

[0014] Furthermore, the top surface of the flotation tank is provided with a collection tank on one side of the two support plates, and a discharge pipe is provided at the bottom of the collection tank. The bottom end of the discharge pipe is provided with a sealing cap. The collection tank can temporarily store scum, and the discharge pipe allows the scum in the collection tank to slide out.

[0015] Furthermore, the electrocoagulation tank has a top gas collection hood and an observation port located on the gas collection hood. The top of the gas collection hood is provided with an air outlet, the bottom of the water outlet tank is provided with a circulating water outlet, the bottom of the electrocoagulation tank is provided with a rinsing inlet, and both the circulating water outlet and the rinsing inlet are connected to a circulation pipe. One end of the two circulation pipes is connected to the same circulating water pump. One of the circulation pipes is provided with a compressed air inlet, and a water inlet baffle is provided on one side of the electrode plate.

[0016] Furthermore, a water and air distribution plate is fixedly installed inside the electrocoagulation tank. A filter screen is laid on the water and air distribution plate, and dense scrubbing balls are provided on the water and air distribution plate. Periodic backwashing relies on the friction of the scrubbing balls to wash away contaminants and oxide scale on the electrode plate. Inclined plates are fixedly connected between the water and air distribution plate and the inner walls on both sides of the electrocoagulation tank. An overflow weir is provided between the electrocoagulation tank and the effluent tank, and a filter screen is provided on the overflow weir.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] 1. In this scheme, when a direct current is applied, the aluminum anode electrolysis generates a large number of critically active aluminum ions with positive charges. These ions react near the electrode to generate charged hydrated ions, which neutralize the wastewater and disrupt its stability. In addition, under the action of the current, the long-chain organic compounds in the wastewater additives can be directly broken at the electrode plate, and the large organic molecules are oxidized into small molecules, increasing the biodegradability of the wastewater. At the same time, the highly active aluminum containing hydroxyl groups also adsorbs and binds pigments and toxic substances in the wastewater.

[0019] 2. This solution eliminates the risk of electric shock by using a 36V safe voltage DC power supply. The power supply can automatically reverse polarity. The selection of a low current density (20-40A / m2) and the automatic polarity reversal setting can slow down the passivation and scaling of the electrode plates, and also make the corrosion of the electrode plates more uniform, which is conducive to extending the service life of the electrode plates. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the pretreatment device for saline waste liquid from refined sugar resin regeneration proposed in this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the air flotation tank portion of the pretreatment device for saline waste liquid from refined sugar resin regeneration proposed in this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the buffer rod, buffer plate, and buffer spring of the pretreatment device for regenerated saline waste liquid of refined sugar resin proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the electrocoagulation tank section of the pretreatment device for regenerated saline waste liquid of refined sugar resin proposed in this utility model.

[0025] The correspondence between the numbers in the attached diagram is as follows:

[0026] 1. Adjustment tank; 2. Transfer pump; 3. Pipeline mixer; 4. pH meter 1; 5. Electrocoagulation tank; 6. DC power supply; 7. Electrode plate; 8. Reactive flocculation tank; 9. pH meter 2; 10. Air flotation tank; 11. Gas collection hood; 12. Observation port; 13. Air outlet; 14. Water inlet; 15. Water outlet; 16. Circulating water outlet; 17. Electric actuator 1; 18. Guide block; 19. Support; 20. Electric actuator 2; 21. Sludge scraper 21. Plate; 22. Support plate; 23. Motor; 24. Tilting plate; 25. Cleaning plate; 26. Buffer rod; 27. Buffer plate; 28. Buffer spring; 29. ​​Collection tank; 30. Discharge pipe; 31. Water inlet baffle; 32. Water and air distribution plate; 33. Scrubbing ball; 34. Filter screen one; 35. Inclined plate; 36. Flushing inlet; 37. Circulation pipe; 38. Compressed air inlet; 39. Circulating water pump; 40. Overflow weir; 41. Filter screen two. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] Reference Figures 1-4 A pretreatment device for saline wastewater from refined sugar resin regeneration includes a regulating tank 1 and a transfer pump 2 connected to the regulating tank 1, and further includes:

[0030] An electrocoagulation tank 5 is located next to a transfer pump 2. An inlet 14 is provided on one side of the electrocoagulation tank 5, and an inlet pipe is connected to the transfer pump 2. An electrode plate 7 is provided inside the electrocoagulation tank 5. A DC power supply 6 electrically connected to the electrode plate 7 is provided on the electrocoagulation tank 5. The positive and negative poles of the DC power supply 6 can be automatically reversed. After running for a period of time, the positive pole becomes the negative pole, and the negative pole becomes the positive pole again. After running for a period of time, the poles are reversed again, and the reversal operation is repeated in sequence. An outlet tank 15 is fixedly provided on one side of the electrocoagulation tank 5. A circulating water outlet is provided on one side of the outlet tank 15. A reaction flocculation tank 8 is connected to one side of the circulating water outlet. A pH meter 9 is provided inside the reaction flocculation tank 8, and an air flotation tank 10 is provided next to the reaction flocculation tank 8. A pipe body 1 is connected between the reaction flocculation tank 8 and the air flotation tank 10. A pipe mixer 3 and a pH meter 4 are provided on the inlet pipe.

[0031] In this embodiment, a slag scraping assembly is installed on the flotation tank 10 to scrape off the slag generated after water treatment. The slag scraping assembly includes guide grooves symmetrically arranged at both ends of the top surface of the flotation tank 10. An electric push rod 17 is fixedly installed on one side wall of each of the two guide grooves. A guide block 18 is fixedly connected to one end of each of the two electric push rods 17. The two guide blocks 18 are slidably connected to the two guide grooves respectively. A bracket 19 is fixedly installed on the top of the two guide blocks 18. By utilizing the sliding cooperation between the two guide blocks 18 and the two guide grooves, the movement trajectory of the bracket 19 can be limited to keep it moving horizontally. An electric push rod 20 is vertically fixed on the bracket 19. A slag scraping plate 21 is fixedly connected to the bottom end of the electric push rod 20. The electric push rod 20 drives the slag scraping plate 21 to descend or rise vertically.

[0032] In this embodiment, a cleaning component is disposed on the air flotation tank 10 and is used to clean the slag scraping component. The cleaning component includes two support plates 22 that are symmetrically fixedly installed on the protruding surface of one end of the air flotation tank 10. A rotating rod is rotatably connected between the two support plates 22. A motor 23 is fixedly installed on one side of one of the support plates 22. The output shaft of the motor 23 is fixedly connected to the rotating rod. A flipping plate 24 is fixedly connected to the rotating rod. When the rotating rod rotates, it can drive the flipping plate 24 to rotate.

[0033] In this embodiment, the flip plate 24 has two cavities. A buffer spring 28 is fixedly connected to one side wall of each cavity. A buffer plate 27 is fixedly connected to one end of each buffer spring 28. A buffer rod 26 is fixedly connected to one side of each buffer plate 27. The two buffer rods 26 drive the two buffer plates 27 to move and compress the two buffer springs 28. This causes the cleaning plate 25 to have a contraction effect when it rotates and contacts the scraper plate 21, thus avoiding interference between the movement trajectory of the cleaning plate 25 and the scraper plate 21. The two buffer rods 26 are slidably connected to the flip plate 24. A cleaning plate 25 is fixedly connected to one end of each buffer rod 26. When the cleaning plate 25 rotates and contacts the scraper plate 21, it can scrape off the floating scum on the scraper plate 21.

[0034] In this embodiment, a collection tank 29 is provided on the top surface of the flotation tank 10 on one side of the two support plates 22. A discharge pipe 30 is provided at the bottom of the collection tank 29. A sealing cap is provided at the bottom end of the discharge pipe 30. The collection tank 29 can temporarily store scum, and the scum in the collection tank 29 can be slid out by using the discharge pipe 30.

[0035] In this embodiment, the top of the electrocoagulation tank 5 has a gas collection hood 11 and an observation port 12 located on the gas collection hood 11. The top of the gas collection hood 11 is provided with an air outlet 13. The bottom of the water outlet tank 15 is provided with a circulating water outlet 16. The bottom of the electrocoagulation tank 5 is provided with a rinsing inlet 36. Both the circulating water outlet 16 and the rinsing inlet 36 are connected to a circulation pipe 37. One end of the two circulation pipes 37 is connected to the same circulating water pump 39. One of the circulation pipes 37 is provided with a compressed air inlet 38. A water inlet baffle 31 is provided on one side of the electrode plate 7. A water distribution and air distribution plate 32 is fixedly installed inside the electrocoagulation tank 5. A filter screen 34 is laid on the water distribution and air distribution plate 32. Dense scrubbing balls 33 are provided on the water distribution and air distribution plate 32. Inclined plates 35 are fixedly connected between the water distribution and air distribution plate 32 and the inner walls on both sides of the electrocoagulation tank 5. An overflow weir 40 is provided between the electrocoagulation tank 5 and the water outlet tank 15. A filter screen 41 is provided on the overflow weir 40.

[0036] The implementation principle of the pretreatment device for saline waste liquid from refined sugar resin regeneration in this application embodiment is as follows: First, the waste liquid in the regulating tank 1 is pumped to the pipeline mixer 3 by the transfer pump 2, and then 20% dilute sulfuric acid a is added to adjust the pH of the waste liquid to between 3.0 and 3.5. The amount of sulfuric acid added can be controlled by the pH meter 4 to precipitate the pigmented waste liquid. The acidic waste liquid enters the electrocoagulation tank 5 through the inlet 14. The waste liquid entering the electrocoagulation tank 5 can have its flow direction and flow state changed by the inlet baffle 31. At the same time, the electrode plate 7 releases active aluminum ions and positive and negative charges, and the inclined plate 35 can limit the scrubbing balls to avoid dispersion and ineffective cleaning. The filter screen 34... The setting can block the scrubbing ball 33 to avoid blocking the rinsing inlet 36. The scrubbing ball 33 is used to remove the stains on the electrode plate 7. The treated water can enter the outlet tank 15 through the overflow weir 40, and then flow back to the rinsing inlet through the circulation pipeline from the circulation water outlet 16. The waste liquid passes through the electric field formed by the electrode plate 7 in the electrocoagulation tank 5. The DC power supply 6 can provide a voltage of 36V between the anode and the cathode. The reaction on the surface of the aluminum electrode plate and the aluminum ions and acid from the anode corrosion form a strong cationic environment. The chloride ions on the anode lose electrons to form a small amount of sodium hypochlorite. The waste liquid undergoes a series of reactions such as demulsification, oxidation chain breaking, and flocculation in this electrocoagulation tank 5.

[0037] However, after the electrochemical reaction, the wastewater enters the reaction flocculation tank 8, where the pH is adjusted to around 7.5 using a 10% alkaline solution, and flocculants are added. Pollutants in the wastewater coagulate into flocs, which are then separated from the liquid as scum by air flotation. Complex organic matter is also reduced to relatively simpler organic matter through electrolysis and oxidation. The electrolyzed wastewater enters the air flotation tank 10, where the coagulated pollutant flocs undergo solid-liquid separation. When it is necessary to scrape the flocs off as scum from the surface of the air flotation tank 10, an electric pusher is used. Rod 20 moves the scraper 21 downwards to contact the liquid surface of the flotation tank 10. Then, two electric push rods 17 move two guide blocks 18 horizontally within two guide channels. This causes the scraper 21 to move and scrape away the scum in the flotation tank 10 as the support 19 moves. Then, electric push rod 20 moves the scraper 21 upwards so that the bottom of the scraper 21 is on the same horizontal line as the top surface of the flotation tank. The two electric push rods 17 then push the two guide blocks 18, causing the support 19 to move. The motor 23 is activated, causing the output shaft of the motor 23 to drive the rotating rod to rotate. The rotating rod drives the tilting plate 24 to rotate, causing the cleaning plate 25 to contact the scraper 21 and scrape the scum on the scraper 21 into the collection tank 29 for collection. When the cleaning plate 25 rotates and contacts the scraper 21, they are squeezed together, causing the cleaning plate 25 to drive the two buffer rods 26 to move. The two buffer rods 26 drive the two buffer plates 27 to move and compress the two buffer springs 28. This results in a contraction effect when the cleaning plate 25 rotates and contacts the scraper 21, avoiding interference between the movement trajectory of the cleaning plate 25 and the scraper 21. When it is necessary to treat the scum in the collection tank 29, the sealing cover at the bottom of the discharge pipe 30 is opened, allowing the scum to slide out through the discharge pipe 30. The water in the flotation tank 10 is discharged from the bottom for pretreatment and purification. After passing through this pretreatment device, the waste liquid enters the biochemical treatment and deep treatment and is discharged after meeting the standards.

[0038] Example 2

[0039] With the combined use of acid precipitation, electrocoagulation, and air flotation, the waste liquid is electrolyzed in an electrolytic cell. High-valence metal ions are ionized and coagulated to separate and remove harmful substances, color, colloids, and COD pollutants, thereby improving the biodegradability of the waste liquid, as shown in the table below:

[0040]

[0041] Unit: mg / L pH dimensionless

[0042] Subsequent treatment validation: Inoculation and cultivation of salt-tolerant activated sludge were carried out. Temperature, pH, reaction time, and other conditions were controlled by microbial oxidation and decomposition of COD and color in the waste liquid, as shown in the table below:

[0043]

[0044] Unit: mg / L pH dimensionless colorimetric decolorization treatment: Ozone nanobubble decolorization treatment, relying on the oxidizing free radicals of ozone to destroy the chromophores of pigments and remove color. Data are shown in the table below:

[0045] project PH COD TDS TN chromaticity Remark Before ozone treatment 8.5 280 21800 65 80 After ozone treatment 8.5 240 21800 65 50 Placement rate / 14.29％ 0.00％ 0.00％ 37.5％

[0046] Unit: mg / L pH dimensionless colorimetric multiple. All structures in this application can be selected in terms of material and length according to actual use. The attached figures are schematic structural diagrams, and the actual dimensions can be adjusted appropriately.

[0047] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and the inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A device for pre-treating salt-containing waste liquid for regeneration of a sugar refinery resin, comprising a conditioning tank (1) and a transfer pump (2) in communication with the conditioning tank (1), characterized in that, Also include: The electric flocculation tank (5) is located on one side of the transfer pump (2), and the electric flocculation tank (5) is provided with a water inlet (14) on one side, and the water inlet (14) is communicated with the water inlet pipe of the transfer pump (2), and the electric flocculation tank (5) is provided with an electrode plate (7), and the electric flocculation tank (5) is provided with a direct current power supply (6) electrically connected with the electrode plate (7), and the electric flocculation tank (5) is fixedly provided with a water outlet (15) on one side, and the water outlet (15) is provided with a circulating water outlet on one side, and the circulating water outlet is communicated with a reaction flocculation tank (8) on one side, and the reaction flocculation tank (8) is provided with a pH meter (9), and the reaction flocculation tank (8) is provided with a gas flotation tank (10) on one side, and the reaction flocculation tank (8) and the gas flotation tank (10) are communicated with a pipe body one, and the water inlet pipe is provided with a pipeline mixer (3) and a pH meter (4); The slag scraping assembly is arranged on the gas flotation tank (10), and is used for scraping the slag generated after water treatment; The cleaning assembly is arranged on the gas flotation tank (10), and is used for cleaning the slag scraping assembly.

2. The apparatus for pre-treating the salt-containing waste liquid for regeneration of a refined sugar resin according to claim 1, characterized by The slag scraping assembly includes guide grooves symmetrically arranged at both ends of the top surface of the gas flotation tank (10), and an electric push rod (17) is fixedly arranged on one side wall of each guide groove, and one end of each electric push rod (17) is fixedly connected with a guide block (18), and the two guide blocks (18) are respectively connected with the two guide grooves in a sliding manner, and the top of each guide block (18) is fixedly connected with a bracket (19).

3. The apparatus for pre-treating the salt-containing waste liquid for regeneration of a refined sugar resin according to claim 2, characterized by The bracket (19) is vertically fixedly provided with an electric push rod (20), and the bottom end of the electric push rod (20) is fixedly connected with a slag scraping plate (21).

4. The apparatus for pre-treating the salt-containing waste liquid for regeneration of a refined sugar resin according to claim 1, characterized by The cleaning assembly includes two symmetrically fixedly installed support plates (22) on one end of the convex surface of the gas flotation tank (10), and a rotating rod is rotatably connected between the two support plates (22), and one side of one of the support plates (22) is fixedly installed with a motor (23), and the output shaft of the motor (23) is fixedly connected with the rotating rod, and the rotating rod is fixedly connected with a turnover plate (24).

5. The apparatus for pre-treating the salt-containing waste liquid for regeneration of a refined sugar resin according to claim 4, characterized by The turnover plate (24) is provided with two cavities, and a buffer spring (28) is fixedly connected to one side wall of each cavity, and one end of each buffer spring (28) is fixedly connected with a buffer plate (27), and one side of each buffer plate (27) is fixedly connected with a buffer rod (26), and each buffer rod (26) is slidably connected with the turnover plate (24), and one end of each buffer rod (26) is fixedly connected with a cleaning plate (25).

6. The apparatus for pre-treating the salt-containing waste liquid for regeneration of a refined sugar resin according to claim 4, characterized by The top surface of the gas flotation tank (10) is provided with a collecting tank (29) on one side of the two support plates (22), and the bottom of the collecting tank (29) is provided with a discharge pipe (30), and the bottom end of the discharge pipe (30) is provided with a sealing cover.

7. The apparatus for the pre-treatment of the salted waste liquid for the regeneration of the refined sugar resin according to claim 1, characterized in that, The top gas collecting hood (11) of the electric flocculation tank (5) is provided with a viewing hole (12) and an air outlet (13), the bottom of the water outlet tank (15) is provided with a circulating water outlet (16), the bottom of the electric flocculation tank (5) is provided with a flushing inlet (36), the circulating water outlet (16) and the flushing inlet (36) are both communicated with a circulating pipe (37), one end of the two circulating pipes (37) is communicated with the same circulating water pump (39), one of the circulating pipes (37) is provided with a compressed air inlet (38), and one side of the electrode plate (7) is provided with a water inlet baffle (31).

8. The apparatus for the pre-treatment of the salted waste liquid for the regeneration of the refined sugar resin according to claim 1, characterized in that, The electric flocculation tank (5) is fixedly installed with a water and air distribution plate (32), the water and air distribution plate (32) is provided with a filter screen (34), the water and air distribution plate (32) is provided with a plurality of scrubbing balls (33), and the water and air distribution plate (32) and the two side inner walls of the electric flocculation tank (5) are both fixedly connected with inclined plates (35), the electric flocculation tank (5) and the water outlet tank (15) are provided with an overflow weir (40), and the overflow weir (40) is provided with a filter screen (41).

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