A kind of soapstock acidification wastewater treatment facility and process

Abstract

The application belongs to the technical field of soapstock wastewater treatment, in particular to a soapstock acidification wastewater treatment facility and process, which comprises a dosing pool body, a water outlet pipe is arranged in the dosing pool body, a water receiving cover is arranged below the end of the water outlet pipe away from the dosing pool body, a coagulation sedimentation tank inlet pipe is fixed to the lower surface of the water receiving cover, and the end of the coagulation sedimentation tank inlet pipe away from the water receiving cover is fixedly connected with the coagulation sedimentation tank. When the annular filter screen is damaged, the plug is pulled away from the fixed plate, the plug moves and presses spring one, the plug is separated from the fixing of the plug plate after leaving the plug slot, the plug plate is immediately pulled out of the positioning slot, the damaged annular filter screen is removed, the plug plate on the surface of the new annular filter screen is immediately inserted into the positioning slot, when the plug slot on the surface of the plug plate moves to the horizontal position of the plug, the plug of spring one is inserted into the plug plate, the new annular filter screen is fixed to complete the replacement, and the normal operation of the filtering process is facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of soapstock wastewater, and particularly relates to a soapstock acidification wastewater treatment facility and process. BACKGROUND

[0002] Soapstock is a byproduct of alkali refining of animal and vegetable oils and fats, and is a product of the deacidification section. Soapstock mainly contains fatty acid salts, i.e. sodium fatty acid generated by the reaction of free fatty acids in oil and fat with sodium hydroxide. Soapstock contains a small amount of neutral oil and a large amount of pigment and electrolyte. After adding an excess of strong acid such as sulfuric acid to soapstock, fatty acid and acidified oil for producing biodiesel can be obtained, but a large amount of acidified wastewater is generated in the process.

[0003] However, the prior art often has the following defects: when soapstock wastewater is treated, soapstock acidification wastewater is discharged along the water outlet pipe to the coagulation sedimentation tank after the hardness is removed by adding soda ash, and there are large-volume recyclable metal impurities in the wastewater. If the impurities and the wastewater are discharged together after treatment, resources will be wasted and the environment will be polluted.

[0004] Therefore, the application provides a soapstock acidification wastewater treatment facility and process. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background.

[0006] The technical scheme adopted by the application to solve the technical problems is: the soapstock acidification wastewater treatment facility comprises a dosing tank body, a water outlet pipe is arranged in the dosing tank body, a water receiving cover is arranged directly below the end of the water outlet pipe away from the dosing tank body, a coagulation sedimentation tank liquid inlet pipe is fixed to the lower surface of the water receiving cover, the end of the coagulation sedimentation tank liquid inlet pipe away from the water receiving cover is fixedly connected with a coagulation sedimentation tank, a mounting frame is connected to the inside of the water receiving cover through a support mechanism, a group of positioning plates are fixedly installed on the surface of the mounting frame, a positioning groove is formed in the inside of the positioning plate, a plug plate is slidably installed on the inner wall of the positioning groove, an annular filter screen is fixedly installed on the surface of the plug plate, a fixed plate is fixedly installed on the surface of the positioning plate, a plug pin is slidably installed on the inner wall of the fixed plate, a spring one is fixedly installed on the surface of the plug pin, the other end of the spring one is fixedly connected with the surface of the fixed plate, and a plug slot is formed in the surface of the plug plate.

[0007] When the soap foot wastewater is treated, the soap foot acidified wastewater is discharged along the water outlet pipe to the coagulation sedimentation tank after removing the hardness by adding soda ash, and the volume of the recyclable metal impurities in the wastewater is large, if the impurities and the wastewater are discharged after treatment, it will cause waste of resources and environmental pollution; the recyclable metal impurities in the wastewater are blocked by the annular filter screen when the wastewater is discharged along the water outlet pipe and enters the mounting frame and the annular filter screen, the rest of the wastewater flows through the annular filter screen and flows into the water receiving cover and enters the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe, so that the recyclable metal impurities and the wastewater are not discharged after treatment, which avoids waste of resources and environmental pollution, the annular filter screen needs to be quickly replaced when damaged, the plug is pulled away from the fixed plate in the direction away from the fixed plate, the plug moves and extrudes the spring one, the plug is separated from the plug slot after the plug leaves the plug slot, the plug is pulled out of the positioning groove, and the damaged annular filter screen is removed, then the plug of the new annular filter screen is inserted into the positioning groove, when the plug slot on the surface of the plug moves to the horizontal position of the plug, the spring one is inserted into the plug, the new annular filter screen is fixed, the replacement is completed, and the normal operation of the filtering process is facilitated.

[0008] Preferably, a spring two is fixedly installed in the inside of the positioning groove, and the top end of the spring two abuts against the lower surface of the plug; when the plug moves into the positioning groove, the spring two is contacted and extruded, and the elasticity is released after the plug is pulled away from the plug slot, so that the plug is quickly bounced out of the positioning plate, and the efficiency of replacing the annular filter screen is further improved.

[0009] Preferably, the supporting mechanism comprises a group of supporting rods fixedly installed on the inner surface of the water receiving cover, a motor one is fixedly installed on the surface of the supporting rod, and the mounting frame is fixedly connected with the output end of the motor one; when the motor one and the output shaft thereof support the mounting frame, the mounting frame is rotated to drive the annular filter screen, the mounting frame is rotated to drive the wastewater in the annular filter screen and the mounting frame to rotate to generate centrifugal force, so that the filtering speed of the wastewater and the impurities is accelerated, and the wastewater treatment efficiency is improved.

[0010] Preferably, a group of jacks are fixedly installed on the lower surface of the mounting frame, and balls are movably installed on the inner wall of the jacks; the positioning rod and the balls abut against the surface of the motor one, the balls in the positioning rod roll on the surface of the motor one when the mounting frame rotates, so as to provide supporting force for the mounting frame and keep the balance of the mounting frame.

[0011] Preferably, a motor two is fixedly installed on the surface of the mounting frame, the output end of the motor two penetrates through the mounting frame, and a rotating plate is fixedly installed on the output end of the motor two; when the wastewater is filtered, the motor two is started, the output shaft of the motor two drives the rotating plate to rotate, the rotating plate rotates to further improve the rotating speed of the wastewater, and the separation and filtration of the wastewater and the impurities are further accelerated.

[0012] Preferably, the inner part of the rotating plate is provided with an installation cavity, and a scraper is slidingly and sealingly installed on the inner wall of the installation cavity; when the annular filter screen needs to be cleaned, the rotating speed of the motor II is increased, the scraper moves away from the rotating plate and abuts against the inner wall of the annular filter screen during the fast rotation of the rotating plate, the inner wall of the annular filter screen is scraped, impurities on the inner wall of the annular filter screen are gathered, and the impurities are conveniently cleaned.

[0013] Preferably, the surface of the scraper is fixedly provided with a collecting box, the surface of the collecting box is provided with a collecting opening, and the surface of the collecting opening close to the inner side of the annular filter screen is provided with a chamfer; the scraper abuts against the inner wall of the annular filter screen during the rotation of the scraper, the impurities are gathered into the collecting box along the chamfer, and the impurities are collected, thereby further facilitating the collection and treatment of the impurities.

[0014] Preferably, the inner wall of the collecting box is rotatably provided with a sealing plate, the surface of the sealing plate is fixedly provided with an elastic sheet, the other end of the elastic sheet is fixedly connected with the inner wall of the collecting box, and the surface of the sealing plate is fixedly provided with a counterweight; when the rotating plate drives the collecting box to rotate, the centrifugal force of the rotation and the counterweight cooperatively drive the sealing plate to rotate and press the elastic sheet, the sealing plate is opened to the collecting box during the rotation of the sealing plate, the impurities can enter the collecting box, the elastic sheet drives the sealing plate to reset when the motor II stops rotating, the collecting box is sealed, and the impurities are prevented from overflowing from the collecting box.

[0015] Preferably, the outer surface of the annular filter screen is fixedly provided with a group of installation cylinders, the inner wall of the installation cylinder is fixedly provided with an electromagnet, the surface of the electromagnet is fixedly provided with an elastic strip, the other end of the elastic strip is fixedly provided with a knocking block, the knocking block has magnetism and repels the electromagnet after being electrified, and the knocking block is slidingly connected with the inner wall of the installation cylinder; when the annular filter screen is cleaned, the electromagnet is electrified, the electromagnet repels the knocking block after being electrified, the knocking block moves and stretches the elastic strip, the knocking block knocks the annular filter screen during the movement of the knocking block, the annular filter screen vibrates to prevent impurities from being stuck on the annular filter screen, and the electromagnet is de-energized, the elastic strip drives the knocking block to reset, and the annular filter screen is continuously knocked to improve the cleaning effect.

[0016] A soapstock acidification wastewater treatment process, which adopts the soapstock acidification wastewater treatment facility, and comprises the following steps:

[0017] S1: After the soapstock acidification wastewater passes through the oil separation tank, the soapstock acidification wastewater is input to the dosing tank by a pump, soda ash is added to adjust the pH value, and caustic soda is added to remove hardness, and then the soapstock acidification wastewater is discharged along the water outlet pipe to the coagulation sedimentation tank;

[0018] S2: When the wastewater is discharged along the outlet pipe, it enters the mounting frame and the annular filter screen. The annular filter screen blocks the larger-sized recyclable metal impurities in the wastewater, and the remaining wastewater passes through the annular filter screen and flows into the water receiving cover and then enters the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe;

[0019] S3: Then, flocculants and coagulants are added in the coagulation sedimentation tank for sedimentation (a large amount of impurities such as hardness (Ca2+, Mg2+), suspended solids, neutral oil, and fatty acid in the wastewater enter the sedimentation), and the sedimentation part is discharged into the sludge concentration tank. After pressure filtration by the pressure filter, pressure filtration sludge is obtained, and the pressure filtration effluent is returned to the raw water part for mixing and then re-entering the system for treatment;

[0020] S4: During the coagulation sedimentation process, the dosing amount of reagents and the stirring time are controlled to achieve good sedimentation effect. The sedimentation amount varies with the different dosing amounts of reagents. With the increase of the dosing amount of soda ash, the color of the flocculent body becomes lighter, and the amount of scale formation decreases;

[0021] S5: The supernatant of the coagulation sedimentation tank enters the heating tank and is heated by steam. When the temperature is above 80℃, a large amount of alunite flowers are generated, and the suspended white clay also separates and settles due to the heating of the oil. The sodium soap alunite flowers and white clay are separated by centrifugation. The impurities in the supernatant of the heating tank are reduced, and the water is clearer;

[0022] S6: The effluent from the centrifuge is pumped to the ceramic membrane for the last pretreatment, which separates the oil and suspended solids and maximally reduces the suspended white clay (rich in a small amount of oil). Because the wastewater after centrifugal treatment still contains some suspended white clay (due to the presence of a small amount of oil), the ceramic membrane is used to filter the oil and suspended white clay containing oil. The concentrated oil after ceramic membrane treatment returns to the production workshop for continuous use. The cleaning frequency and cleaning water volume of the ceramic membrane assembly are greatly reduced, and the water quality is superior. The concentrated oil after ceramic membrane treatment returns to the production workshop for continuous use. The cleaning waste water of the ceramic membrane assembly returns to the water inlet tank);

[0023] S7: Subsequently, a low-temperature normal-pressure evaporation crystallization process (the evaporation technology is carried out at low temperature and normal pressure, mainly including an evaporation unit, a conveying unit and a cooling crystallization unit, and the technology can effectively separate salts, organic matters and VOC (volatile organic compounds) in the wastewater to realize the recycling and reduction of the wastewater) is carried out, the ceramic membrane effluent is discharged into an intermediate water pool, and is conveyed by a pump to the low-temperature normal-pressure evaporation crystallization process to be evaporated and separated into condensed liquid (and volatile organic aqueous solution) and concentrated liquid (or solid) (the low-temperature normal-pressure evaporation crystallization process concentrates the inlet liquid by 5-6 times, and has a certain degree of concentration on glycerol, sodium sulfate and disodium hydrogen phosphate, separates into water, salt and glycerol, and can realize the resource utilization of waste, according to different water quality and treatment requirements, further disposal is made, and the concentrated liquid of the evaporation crystallization process can be returned to the workshop for repeated use), the effluent of the low-temperature normal-pressure evaporation crystallization process has completely met the needs of biochemical treatment, the produced water can be directly reused to the hydrolysis process section of the acidification oil deep treatment, or can be discharged after simple biochemical treatment.

[0024] The beneficial effects of the present application are as follows:

[0025] 1. The soapstock acidification wastewater treatment facility and process, when the wastewater is discharged along the effluent pipe, it enters the mounting frame and the annular filter screen, the annular filter screen blocks the relatively large-sized recyclable metal impurities in the wastewater, the remaining wastewater passes through the annular filter screen and flows into the water receiving cover and enters the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe, so that the recyclable metal impurities and the wastewater after treatment are not discharged together, resource waste and environmental pollution are avoided, the annular filter screen needs to be quickly replaced when it is damaged, the plug is pulled away from the fixed plate, the plug moves and extrudes spring one, the plug is out of the slot, the plug plate is then pulled out of the positioning groove, the damaged annular filter screen is removed, the plug plate on the surface of the new annular filter screen is then inserted into the positioning groove, when the slot on the surface of the plug plate moves to the horizontal position of the plug, the plug is inserted into the plug plate, the new annular filter screen is fixed to complete the replacement, and the normal operation of the filtering process is facilitated.

[0026] 2. The soapstock acidification wastewater treatment facility and process, when the plug plate moves into the positioning groove, it contacts and extrudes spring two, and releases the elasticity after the plug is pulled away from the slot, so that the plug plate is quickly bounced out of the positioning plate, and the efficiency of replacing the annular filter screen is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below with reference to the drawings.

[0028] Figure 1 is a perspective view of the whole application;

[0029] Figure 2This is a partial cross-sectional view of the water collection cover in this invention;

[0030] Figure 3 This is a schematic diagram of the structure of the positioning plate in this invention;

[0031] Figure 4 This is a schematic diagram of the structure of motor one in this invention;

[0032] Figure 5 This is a schematic diagram of the transfer plate in this invention;

[0033] Figure 6 This is a schematic diagram of the mounting cylinder in this invention;

[0034] Figure 7 This is a process flow diagram of the present invention.

[0035] In the diagram: 1. Dosing tank body; 2. Outlet pipe; 3. Water receiving cover; 4. Mounting frame; 5. Positioning plate; 6. Insert plate; 7. Annular filter screen; 8. Pin; 9. Fixing plate; 10. Spring 1; 11. Positioning groove; 12. Spring 2; 13. Support rod; 14. Motor 1; 15. Top rod; 16. Ball bearing; 17. Motor 2; 18. Rotating plate; 19. Scraper; 20. Collection box; 21. Sealing plate; 22. Counterweight; 23. Spring; 24. Mounting cylinder; 25. Electromagnet; 26. Spring bar; 27. Knocking block; 28. Coagulation sedimentation tank inlet pipe. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Example 1: As Figures 1 to 5 As shown in the embodiment of the present invention, a soap residue acidification wastewater treatment facility includes a dosing tank 1, an outlet pipe 2 in the dosing tank 1, a water receiving cover 3 directly below the end of the outlet pipe 2 away from the dosing tank 1, a coagulation sedimentation tank inlet pipe 28 fixed on the lower surface of the water receiving cover 3, the end of the coagulation sedimentation tank inlet pipe 28 away from the water receiving cover 3 being fixedly connected to the coagulation sedimentation tank, an installation frame 4 connected inside the water receiving cover 3 via a support mechanism, a set of positioning plates 5 fixedly installed on the surface of the installation frame 4, a positioning groove 11 opened inside the positioning plate 5, an insert plate 6 slidably installed on the inner wall of the positioning groove 11, an annular filter screen 7 fixedly installed on the surface of the insert plate 6, a fixing plate 9 fixedly installed on the surface of the positioning plate 5, a pin 8 slidably installed on the inner wall of the fixing plate 9, a spring 10 fixedly installed on the surface of the pin 8, the other end of the spring 10 being fixedly connected to the surface of the fixing plate 9, and a slot opened on the surface of the insert plate 6.

[0038] When the soap foot wastewater is treated, the soap foot acidified wastewater is discharged along the water outlet pipe 2 to the coagulation sedimentation tank after removing the hardness by adding soda ash, and the volume of the recyclable metal impurities in the wastewater is large, if the impurities and the wastewater are discharged after treatment, it will cause waste of resources and environmental pollution; the recyclable metal impurities in the wastewater are blocked by the annular filter screen 7 when the wastewater is discharged along the water outlet pipe 2 and enters the mounting frame 4 and the annular filter screen 7, the remaining wastewater flows into the water receiving cover 3 through the annular filter screen 7 and enters the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe 28, so that the recyclable metal impurities and the wastewater are not discharged after treatment, which causes waste of resources and environmental pollution, and the annular filter screen 7 needs to be quickly replaced when damaged, the plug 8 is pulled away from the fixed plate 9, the plug 8 moves and extrudes the spring I 10, the plug 8 is separated from the plug slot, and then the plug 6 is pulled out of the positioning groove 11, so that the damaged annular filter screen 7 is removed, and then the plug 6 on the surface of the new annular filter screen 7 is inserted into the positioning groove 11, when the plug slot on the surface of the plug 6 moves to the horizontal position of the plug 8, the spring I 10 is inserted into the plug 6, the new annular filter screen 7 is fixed and replaced, and the normal operation of the filtering process is facilitated.

[0039] The positioning groove 11 is internally fixedly installed with a spring II 12, and the top end of the spring II 12 abuts against the lower surface of the plug 6; when the plug 6 moves into the positioning groove 11, the spring II 12 is contacted and extruded, and after the plug 8 is pulled away from the plug slot, the spring II 12 is released to quickly pop the plug 6 out of the positioning plate 5, and the efficiency of replacing the annular filter screen 7 is further improved.

[0040] The support mechanism includes a group of support rods 13 fixedly installed on the inner surface of the water receiving cover 3, the surface of the support rod 13 is fixedly installed with a motor I 14, and the mounting frame 4 is fixedly connected with the output end of the motor I 14; when the motor I 14 and the output shaft thereof support the mounting frame 4, the motor I 14 drives the mounting frame 4 and the annular filter screen 7 to rotate, the mounting frame 4 drives the wastewater entering the annular filter screen 7 and the mounting frame 4 to rotate to generate centrifugal force, so as to accelerate the filtering speed of the wastewater and the impurities and improve the wastewater treatment efficiency.

[0041] The lower surface of the mounting frame 4 is fixedly installed with a group of jacks 15, and the inner wall of the jack 15 is movably installed with a ball 16; the positioning rod and the ball 16 abut against the surface of the motor I 14, and the ball 16 in the positioning rod rolls on the surface of the motor I 14 when the mounting frame 4 rotates, so as to provide support force for the mounting frame 4 and keep the balance of the mounting frame 4.

[0042] The surface of the mounting frame 4 is fixedly installed with a motor two 17, the output end of the motor two 17 penetrates the mounting frame 4, and the output end of the motor two 17 is fixedly installed with a rotating plate 18; when filtering wastewater, the motor two 17 is started, the output shaft of the motor two 17 drives the rotating plate 18 to rotate, and the rotating plate 18 further improves the speed of wastewater rotation and further accelerates the separation and filtration of wastewater and impurities.

[0043] The inside of the rotating plate 18 is provided with a mounting cavity, and the inner wall of the mounting cavity is slidingly and sealingly installed with a scraper 19; when the annular filter screen 7 needs to be cleaned, the rotating speed of the motor two 17 is increased, the scraper 19 moves away from the rotating plate 18 during the rapid rotation of the rotating plate 18 and abuts against the inner wall of the annular filter screen 7, and the inner wall of the annular filter screen 7 is scraped to gather impurities on the inner wall of the annular filter screen 7, so that the impurities are conveniently cleaned.

[0044] The surface of the scraper 19 is fixedly installed with a collecting box 20, the surface of the collecting box 20 is provided with a collecting opening, and the surface of the collecting opening close to the inner side of the annular filter screen 7 is chamfered; the scraper 19 abuts against the inner wall of the filter screen during rotation, and the impurities are gathered and enter the collecting box 20 along the chamfered portion, so that the impurities are collected and further conveniently collected and treated.

[0045] The inner wall of the collecting box 20 is rotatably installed with a sealing plate 21, the surface of the sealing plate 21 is fixedly installed with an elastic sheet 23, the other end of the elastic sheet 23 is fixedly connected with the inner wall of the collecting box 20, and the surface of the sealing plate 21 is fixedly installed with a counterweight 22; when the rotating plate 18 drives the collecting box 20 to rotate, the centrifugal force of rotation and the counterweight 22 cooperate to drive the sealing plate 21 to rotate and press the elastic sheet 23, the sealing plate 21 is opened when rotating to block the collecting box 20, and the impurities can enter the collecting box 20, the elastic sheet 23 drives the sealing plate 21 to reset to seal the collecting box 20 when the motor two 17 stops rotating, so that the impurities are prevented from overflowing from the collecting box 20.

[0046] Embodiment two: as Figure 6As shown, the comparative example one, wherein another embodiment of the present application is: the outer surface of the ring filter 7 is fixedly installed with a group of installation cylinder 24, the inner wall of the installation cylinder 24 is fixedly installed with electromagnet 25, the surface of the electromagnet 25 is fixedly installed with elastic strip 26, the other end of the elastic strip 26 is fixedly installed with knocking block 27, the knocking block 27 has magnetism and repels the electromagnet 25 after electrification, the knocking block 27 is slidingly connected with the inner wall of the installation cylinder 24; when cleaning the ring filter 7, the electromagnet 25 is electrified, the electromagnet 25 repels the knocking block 27 after electrification, the knocking block 27 moves immediately and stretches the elastic strip 26, the knocking block 27 knocks the ring filter 7 when moving, the ring filter 7 vibrates immediately to avoid impurities from being stuck on the ring filter 7, and the elastic strip 26 drives the knocking block 27 to reset after the electromagnet 25 is deenergized, and the continuous electrification of the electromagnet 25 can realize the continuous knocking of the ring filter 7, thereby further improving the cleaning effect.

[0047] As shown in the figure, Figure 7 A soap foot acidification wastewater treatment process, which adopts the above-mentioned soap foot acidification wastewater treatment facility, and comprises the following steps:

[0048] S1: After the soap foot acidification wastewater passes through the oil separation tank, it is pumped into the dosing tank, sodium carbonate is added to adjust the pH value, and soda ash is added to remove hardness, and then it is discharged along the water outlet pipe 2 to the coagulation sedimentation tank;

[0049] S2: When the wastewater is discharged along the water outlet pipe 2, it enters the installation frame 4 and the ring filter 7, the ring filter 7 blocks the relatively large-sized recyclable metal impurities in the wastewater, and the remaining wastewater flows into the water receiving cover 3 through the ring filter 7 and enters the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe 28;

[0050] S3: Then, flocculants and coagulants are added in the coagulation sedimentation tank, and sedimentation is carried out, part of the sedimentation is discharged into the sludge thickening tank, and the pressure filtration sludge is obtained after pressure filtration by the pressure filter, and the pressure filtration effluent returns to the raw water part and then enters the system for treatment again;

[0051] S4: The coagulation sedimentation process can achieve good sedimentation effect by controlling the dosage of reagents and stirring time, and the sedimentation amount is different according to the different dosages, and with the increase of the dosage of soda ash, the color of the flocculent becomes lighter and lighter, and the amount of scale formation decreases;

[0052] S5: The supernatant of the coagulation sedimentation tank enters the heating tank and is heated by steam, when the temperature is above 80℃, a large amount of alunite flower is generated, and the suspended white clay also separates out oil and settles due to heating, the sodium alunite flower and white clay can be separated by centrifugation, and the impurities in the supernatant of the heating tank are reduced, which is clearer;

[0053] S6: The centrifuge water is transported to the ceramic membrane by a pump, the ceramic membrane performs the last pretreatment, and the grease and suspended matter are separated, the suspended clay (rich in a small amount of grease) is reduced to the maximum extent, and the ceramic membrane is used to filter the grease and the suspended clay containing oil;

[0054] S7: Subsequently, a low-temperature normal-pressure evaporation crystallization process is performed, the ceramic membrane water is discharged into an intermediate pool, and is transported to the low-temperature normal-pressure evaporation crystallization process by a pump to perform evaporation and can be separated into a condensate (and a volatile organic matter aqueous solution) and a concentrated liquid (or a solid).

[0055] Working principle: After the wastewater is discharged along the outlet pipe 2, it enters the mounting frame 4 and the annular filter screen 7, the annular filter screen 7 blocks the relatively large volume of recyclable metal impurities in the wastewater, and the remaining wastewater flows through the annular filter screen 7 and flows into the water receiving cover 3 and enters the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe 28, so that the recyclable metal impurities and the wastewater after treatment are not discharged together, causing resource waste and environmental pollution, and the annular filter screen 7 needs to be quickly replaced when damaged, the plug 8 is pulled away from the fixed plate 9, the plug 8 moves and presses the spring I 10, the plug 8 leaves the slot, and then the plug 6 is pulled out of the positioning groove 11, so that the damaged annular filter screen 7 is removed, and then the plug 6 on the surface of the new annular filter screen 7 is inserted into the positioning groove 11, when the plug 6 on the surface of the new annular filter screen 7 is inserted into the positioning groove 11, the spring I 10 is inserted into the plug 6, and the new annular filter screen 7 is fixed and replaced, so that the normal operation of the filtering process is facilitated; when the plug 6 moves into the positioning groove 11, the spring II 12 is contacted and pressed, and after the plug 8 is pulled away from the slot, the spring is released, and the plug 6 is quickly bounced out of the positioning plate 5, further improving the efficiency of replacing the annular filter screen 7; when the motor I 14 and its output shaft support the mounting frame 4, the motor I 14 drives the mounting frame 4 and the annular filter screen 7 to rotate, the mounting frame 4 rotates to drive the wastewater in the annular filter screen 7 and the mounting frame 4 to rotate to generate centrifugal force, thereby accelerating the filtration speed of the wastewater and impurities and improving the wastewater treatment efficiency;

[0056] The positioning rod cooperates with the ball 16 and abuts against the surface of the motor 1, the ball 16 in the rod rolls on the surface of the motor 1 when the mounting frame 4 rotates, thereby providing support force for the mounting frame 4 and keeping the balance of the mounting frame 4; when filtering wastewater, the motor 2 is started, the output shaft of the motor 2 drives the rotating plate 18 to rotate, the rotating plate 18 further improves the rotating speed of the wastewater and accelerates the separation and filtration of the wastewater and impurities; when the annular filter screen 7 needs to be cleaned, the rotating speed of the motor 2 is increased, the scraper 19 moves away from the rotating plate 18 and abuts against the inner wall of the annular filter screen 7 in the process of rapid rotation of the rotating plate 18, and the inner wall of the annular filter screen 7 is scraped, so that the impurities on the inner wall of the annular filter screen 7 are gathered, and the impurities are conveniently cleaned; the scraper 19 abuts against the inner wall of the filter screen during rotation, and the impurities are gathered and enter the collecting box 20 along the chamfer, so that the impurities are collected and treated; when the rotating plate 18 drives the collecting box 20 to rotate, the centrifugal force of rotation cooperates with the counterweight 22 to drive the sealing plate 21 to rotate and extrude the elastic sheet 23, the sealing plate 21 is opened when rotating to block the collecting box 20, and then the impurities can enter the collecting box 20, and when the motor 2 stops rotating, the elastic sheet 23 drives the sealing plate 21 to reset to seal the collecting box 20, so that the impurities are prevented from overflowing from the collecting box 20; when the annular filter screen 7 is cleaned, the electromagnet 25 is electrified, the electromagnet 25 repels the knocking block 27 after being electrified, the knocking block 27 moves and stretches the elastic strip 26, the knocking block 27 knocks the annular filter screen 7 when moving, the annular filter screen 7 vibrates to prevent the impurities from being stuck on the annular filter screen 7, and the elastic strip 26 drives the knocking block 27 to reset after the electromagnet 25 is de-energized, and the annular filter screen 7 is continuously knocked to improve the cleaning effect.

[0057] The above-mentioned front, rear, left, right, top and bottom are based on the drawings of the specification Figure 1 As a standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and the like.

[0058] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0059] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A soap skimming acidified wastewater treatment facility characterized by: The utility model provides a dosing tank body (1), be provided with water outlet pipe (2) in dosing tank body (1), water outlet pipe (2) far away dosing tank body (1) one end's just below is provided with water receiving cover (3), the lower surface of water receiving cover (3) is fixed with coagulation sedimentation tank inlet pipe (28), coagulation sedimentation tank inlet pipe (28) far away water receiving cover (3) one end is fixedly connected with coagulation sedimentation tank, the inside of water receiving cover (3) is connected with mounting bracket (4) through support mechanism, the surface of mounting bracket (4) is fixedly installed with a group of positioning plate (5), the inside of positioning plate (5) is opened with locating groove (11), the inner wall of locating groove (11) is slidably installed with plugboard (6), the surface of plugboard (6) is fixedly installed with annular filter screen (7), the surface of positioning plate (5) is fixedly installed with fixed plate (9), the inner wall of fixed plate (9) is slidably installed with bolt (8), the surface of bolt (8) is fixedly installed with spring one (10), the other end of spring one (10) is fixedly connected with the surface of fixed plate (9), the surface of plugboard (6) is opened with insertion slot; The outer surface of the annular filter screen (7) is fixedly installed with a group of installation cylinders (24), the inner wall of the installation cylinder (24) is fixedly installed with an electromagnet (25), the surface of the electromagnet (25) is fixedly installed with a spring strip (26), the other end of the spring strip (26) is fixedly installed with a knocking block (27), the knocking block (27) has magnetism and repels the electromagnet (25) after electrification, the knocking block (27) is slidably connected with the inner wall of the installation cylinder (24).

2. A soap skimming acidification wastewater treatment plant according to claim 1, characterized in that: The inside of the locating groove (11) is fixedly installed with a spring (12), and the top end of the spring (12) abuts against the lower surface of the plugboard (6).

3. A soap skimming acidification wastewater treatment plant according to claim 2, characterized in that: The support mechanism includes a plurality of support rods (13) fixedly installed on the inner surface of the water receiving cover (3), and the surface of the support rod (13) is fixedly installed with a motor (14), and the output end of the motor (14) is fixedly connected with the mounting bracket (4).

4. A soap skimming acidification wastewater treatment plant according to claim 3, characterized in that: The lower surface of the mounting bracket (4) is fixedly installed with a group of jacks (15), and the inner wall of the jack (15) is movably installed with a ball (16).

5. A soap skimming acidification wastewater treatment plant according to claim 4, characterized in that: The surface of the mounting bracket (4) is fixedly installed with a motor (17), and the output end of the motor (17) penetrates the mounting bracket (4), and the output end of the motor (17) is fixedly installed with a rotating plate (18).

6. A soap skimming acidification wastewater treatment plant according to claim 5, characterized in that: The inside of the rotating plate (18) is provided with an installation cavity, and the inner wall of the installation cavity is slidably and sealingly installed with a scraper (19).

7. A soap skimming acidification wastewater treatment plant according to claim 6, characterized in that: The surface of the scraper (19) is fixedly installed with a collection box (20), and the surface of the collection box (20) is provided with a collection opening, and the surface of the collection opening close to the inner side of the annular filter screen (7) is provided with a chamfer.

8. A soap skimming acidification wastewater treatment plant according to claim 7, characterized in that: The inner wall of the collection box (20) is rotatably installed with a sealing plate (21), the surface of the sealing plate (21) is fixedly installed with a spring piece (23), the other end of the spring piece (23) is fixedly connected with the inner wall of the collection box (20), the surface of the sealing plate (21) is fixedly installed with a counterweight (22).

9. A process for the treatment of soap skimming acidified effluent, the process employing the soap skimming acidified effluent treatment plant as claimed in claim 8, characterized in that: The process comprises the following steps: S1: The soap foot acidified wastewater is input to the dosing tank by the pump after the oil separation tank, and the pH value is adjusted by adding flake alkali, and the hardness is removed by adding soda ash, and then discharged along the water outlet pipe (2) to the coagulation sedimentation tank; S2: When the wastewater is discharged along the water outlet pipe (2), it will enter the installation frame (4) and the annular filter screen (7), the annular filter screen (7) will block the larger volume of recyclable metal impurities in the wastewater, and the remaining wastewater will pass through the annular filter screen (7) and flow into the water receiving cover (3) and enter the coagulation sedimentation tank through the coagulation sedimentation tank inlet pipe (28); S3: Then add flocculants and coagulants in the coagulation sedimentation tank, and carry out sedimentation, and the sedimented part is discharged into the sludge thickening tank, and the pressure filtration sludge is obtained by pressure filtration through the pressure filter, and the pressure filtration effluent returns to the raw water part and enters the system for treatment again; S4: The coagulation sedimentation process controls the dosage of reagents and stirring time well, which can achieve good sedimentation effect, and the sedimentation amount is different according to the different dosages, and with the increase of the dosage of soda ash, the color of the flocculation body becomes lighter, and the amount of scale formation is reduced; S5: The supernatant of the coagulation sedimentation tank enters the heating tank, and is heated by steam, when the temperature is above 80℃, a large amount of alunite flower will be produced, and the suspended white clay will also be separated due to the heating of the oil and sediment, the sodium alunite flower and white clay can be centrifuged to separate the oil and suspended matter, the supernatant of the heating tank will be more clear after the impurities are reduced; S6: The centrifuge effluent is pumped to the ceramic membrane, the ceramic membrane is used for the last pretreatment, and the oil and suspended matter are separated, the suspended white clay is reduced to the maximum extent, and the ceramic membrane is used to filter the oil and suspended white clay containing oil; S7: Then carry out the low-temperature atmospheric evaporation crystallization process, the ceramic membrane effluent is discharged into the intermediate water tank, and is pumped to the low-temperature atmospheric evaporation crystallization process for evaporation to separate into condensate.

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