Method and device for treating dyeing residual liquid

Abstract

The present application relates to the technical field of dyeing residual liquid treatment, and particularly discloses a treatment method and device for recycling dyeing residual liquid, which comprises the following steps: injecting the dyeing residual liquid into a connecting shell to obtain a first filtrate; making the first filtrate pass through an arc surface filter screen and an impurity filter disc in sequence to obtain a second filtrate; adding acid liquid to make the pH of the second filtrate be 8.5-9; starting a pressure generator to make the second filtrate pass through a nanofiltration membrane layer; conveying the nanofiltration membrane concentrated liquid to a first recovery bin in a recovery tank through a liquid delivery pump; adding alkali liquid to make the pH of the nanofiltrate be adjusted to 10-10.5; conveying the nanofiltrate to a reverse osmosis mechanism through the liquid delivery pump; starting an electric telescopic rod to make the nanofiltrate pass through a reverse osmosis membrane layer; conveying the reverse osmosis concentrated liquid remaining on the reverse osmosis membrane layer to a second recovery bin in the recovery tank through a conveying pump, and discharging the reverse osmosis dilute liquid after passing through the reverse osmosis membrane layer. The present application has the characteristics of simple process and high recycling degree of soda ash.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dyeing residual liquid treatment, in particular to a treatment method and device for recycling dyeing residual liquid. BACKGROUND

[0002] Dyeing residual liquid refers to the dyeing wastewater discharged after dyeing, excluding washing water. Since salt is usually added first to promote dyeing, and then soda is added to level dyeing, the dyeing residual liquid contains not only unreacted dyes and hydrolysis products, but also a large amount of salt and soda, with a colority of 4-5 ten thousand times, which is difficult to degrade and is a difficulty in wastewater treatment in the printing and dyeing industry.

[0003] The traditional printing and dyeing wastewater treatment process is to mix the high-salt dyeing residual liquid with the wastewater generated in other production processes, to reduce the colority and salt content of the wastewater by dilution, and then to treat it by physicochemical-biochemical-deep treatment process. Although this treatment process is mature, it has high investment and operation cost, and unstable effect. In addition, the discharge of salt-containing wastewater not only harms the ecological environment, but also wastes resources.

[0004] The patent document with publication number "CN104291398A" discloses a treatment method for recycling dyeing residual liquid. Organic liquid is added to the acid dyeing residual liquid to separate the color-developing substances in the dyeing residual liquid into the organic liquid, thereby decolorizing the dyeing residual liquid. The decolorized dyeing residual liquid is reused according to the dyeing process. The use of organic liquid for decolorization of the dyeing residual liquid makes the colority of the decolorized dyeing residual liquid low, and the decolorization rate can reach more than 99%. However, it cannot separate soda and salt.

[0005] The patent document with publication number "CN102745761A" discloses a method for recycling and utilizing active dyeing residual liquid, comprising the following steps: (1) adsorbing the dyeing residual liquid to obtain a treated liquid; (2) filtering the treated liquid; (3) measuring the salt and alkali content in the treated liquid; (4) adding dyes to the treated liquid; (5) supplementing salt, alkali and water to reach the required concentration of the dyeing process; (6) dyeing according to the dyeing process; (7) repeating steps (1)-(6). In step (1), the adsorbent used in the adsorption treatment is a dye catcher. It effectively solves the high salt problem of dyeing wastewater, reduces the wastewater discharge and COD value in the wastewater, and reduces the wastewater treatment cost. However, it cannot separate soda and salt.

[0006] The patent document with publication number "CN102351268A" discloses a method for recycling inorganic salts in dyeing wastewater, comprising: (1) injecting the inorganic salt-containing dyeing wastewater into an oil-water separator, then adding an organic solvent into the oil-water separator, stirring for 1-15 min, and standing for layering; (2) separating the lower layer inorganic salt aqueous solution, adjusting the pH value with an acid, and recycling into a dyeing process; and recycling the organic solvent from the mixed solution of the upper layer organic solvent, water and dye through a solvent recovery machine; the method has low cost, low requirement for equipment, and simple operation method, and can realize recycling of a large amount of inorganic salts in the printing and dyeing industry. However, it cannot separate soda ash and salt.

[0007] Therefore, the existing treatment of dyeing residual liquid has the problem that soda ash and salt cannot be separated, resulting in low recycling degree of the valuable soda ash. SUMMARY

[0008] The present application provides a treatment method and device for recycling dyeing residual liquid, which has the characteristics of simple process and high recycling degree of soda ash.

[0009] The first technical solution of the present application is a treatment method for recycling dyeing residual liquid, comprising the following steps:

[0010] (S01) injecting the dyeing residual liquid into the connecting shell, and filtering the dyeing residual liquid through the water leakage hole to obtain a first filtrate;

[0011] (S02) sequentially passing the first filtrate in step (S01) through the curved surface filter screen and the impurity filter disc to obtain a second filtrate;

[0012] (S03) stopping adding the dyeing residual liquid when the second filtrate in step (S02) is about to be completely sealed with the sealing device by the floating plugging device;

[0013] (S04) adding an acid solution in the connecting shell to make the pH of the second filtrate in step (S03) be 8.5-9;

[0014] (S05) continuing to inject the dyeing residual liquid into the connecting shell until the plugging device is completely sealed with the sealing device;

[0015] (S06) starting the pressure generator to make the second filtrate with adjusted pH in the treatment tank pass through the nanofiltration membrane layer to obtain nanofiltration membrane concentrate left on the nanofiltration membrane layer and nanofiltration membrane diluent passing through the nanofiltration membrane layer;

[0016] (S07) stopping the pressure generator and releasing the pressure in the treatment tank after the nanofiltration of the second filtrate in step (S06) is completed;

[0017] (S08) After the pressure relief in step (S07) is completed, the nanofiltration membrane concentrate is delivered to the first recovery bin in the recovery tank by a delivery pump;

[0018] (S09) In the connecting shell, lye is added to adjust the pH of the nanofiltration membrane diluent in the treatment tank to 10-10.5;

[0019] (S10) The nanofiltration membrane diluent after pH adjustment in step (S09) is delivered to the reverse osmosis mechanism by a delivery pump;

[0020] (S11) The electric telescopic rod in the reverse osmosis mechanism is started to make the nanofiltration membrane diluent in the shell pass through the reverse osmosis membrane layer;

[0021] (S12) After reverse osmosis in step (S11), the reverse osmosis concentrate remaining on the reverse osmosis membrane layer is delivered to the second recovery bin in the recovery tank by a delivery pump, and the reverse osmosis diluent after passing through the reverse osmosis membrane layer is discharged. In the present application, the dyeing residual liquid first passes through the water leakage hole, which is equivalent to primary filtration and can remove large particles of suspended matter in the dyeing residual liquid; the dyeing residual liquid continues to pass through the arc filter screen and the impurity filter disc for secondary filtration to further remove suspended matter in the dyeing residual liquid; when the second filtrate floating plugging device is about to be completely matched and sealed with the sealing device, the addition of the dyeing residual liquid is stopped, in order to perform acid addition and pH adjustment before complete sealing; the pH of the second filtrate is adjusted to 8.5-9 by adding acid, in order to effectively prevent the formation of calcium carbonate; the dyeing residual liquid is continuously injected until the plugging device is completely sealed with the sealing device, in order to ensure subsequent good sealing and pressurization for nanofiltration of the dyeing residual liquid; the dyeing residual liquid is successfully obtained by passing through the nanofiltration membrane layer through pressurization by the pressure intensifier in a physical manner; the pressure intensifier is stopped after nanofiltration, and the treatment tank is depressurized, in order to deliver the nanofiltration membrane concentrate to the first recovery bin by a delivery pump; the pH of the nanofiltration membrane diluent is adjusted back to 10-10.5 by adding lye, in order to better subsequent reverse osmosis treatment and better separate the caustic soda and salt; the nanofiltration membrane diluent is pressed downward through the reverse osmosis membrane layer by the electric telescopic rod to concentrate the reverse osmosis diluent caustic soda liquid with a purity up to standard, which can be recycled for use of caustic soda, reducing resource waste; the reverse osmosis concentrate can be repeatedly used in the dyeing process; the reverse osmosis diluent can be used as production water, such as dyeing water washing and soaping water washing.

[0022] Preferably, the acid solution in step (S04) is a hydrochloric acid solution.

[0023] Preferably, the lye in step (S09) is a sodium hydroxide solution.

[0024] Preferably, the nanofiltration membrane in step (S06) has a molecular weight cut-off of 800-1500 Da. The nanofiltration membrane can concentrate 4-10 times, has good nanofiltration effect, and can remove all macromolecular substances that do not meet the requirements.

[0025] Preferably, the nanofiltration membrane in step (S06) is a ceramic nanofiltration membrane. The ceramic nanofiltration membrane is more resistant to acid and alkali and has a longer service life.

[0026] Preferably, the reverse osmosis membrane in step (S11) has a molecular weight cut-off of 100-400 Da. The reverse osmosis membrane can further concentrate 4-10 times, has good caustic soda and salt separation effect, and can effectively separate caustic soda.

[0027] The second technical solution of the present application is a treatment device for recycling dyeing residual liquid, which comprises a treatment tank, a connecting shell is arranged at the top of the treatment tank, a stirring device and a top-moving device are sequentially arranged in the connecting shell from top to bottom, and part of the top-moving device is located in the treatment tank; a sealing device is arranged at the connection between the inside of the connecting shell and the treatment tank; a recovery tank is arranged at the bottom of the treatment tank, a reverse osmosis mechanism is connected to the recovery tank through a reflux pipe, and the reverse osmosis mechanism is connected to the treatment tank through a conveying pipe; a pressurizer is arranged on the inner wall surface of the treatment tank, a nanofiltration membrane layer is arranged in the treatment tank, and an inlet pipe is communicated with the connecting shell. The injected dyeing residual liquid is first uniformly stirred by the stirring device, so that the dyeing residual liquid falls uniformly, and the stirring device can perform primary filtration on large particles in the dyeing residual liquid during uniform stirring; the uniformly stirred dyeing residual liquid falls on the top-moving device, and the top-moving device performs secondary filtration on the dyeing residual liquid, further removing suspended matter in the dyeing residual liquid; when the dyeing residual liquid after secondary filtration fills the treatment tank, the injection of the dyeing residual liquid is stopped, the dyeing residual liquid floating on the top-moving device is sealed with the sealing device, the pressurizer is started to pressurize the treatment tank, the dyeing residual liquid after primary filtration in the treatment tank is subjected to nanofiltration concentration through the nanofiltration membrane layer, the nanofiltration diluent after the nanofiltration membrane layer is subjected to further reverse osmosis treatment in the reverse osmosis mechanism, so as to separate caustic soda and salt, and the obtained reverse osmosis caustic soda solution is recycled and reused. The whole treatment process is simple and has certain economic value.

[0028] Preferably, the stirring device comprises a support ball head, the support ball head is rotationally arranged at the top of the connecting shell, and a stirring piece device is arranged on the support ball head. The support ball head is rotationally arranged at the top of the connecting shell, under the action of the impact force of the dyeing residual liquid during injection of the dyeing residual liquid, the support ball head starts to rotate, the stirring piece device stirs the dyeing residual liquid, and the dyeing residual liquid falls gently, reducing the impact force.

[0029] As preferred, the stirring piece device comprises a plurality of stirring piece bodies, which are arranged on the outer wall surface of the supporting ball head, and the stirring piece bodies are sequentially provided with top perforations, middle perforations and bottom perforations. The stirring piece bodies, the top perforations, the middle perforations and the bottom perforations can all block and stir the dyeing residual liquid, so that the dyeing residual liquid falls more gently and uniformly.

[0030] As preferred, the stirring piece bodies are arranged obliquely on the supporting ball head. The obliquely arranged stirring piece bodies can better receive the impact force of the dyeing residual liquid and stir the dyeing residual liquid well during continuous rotation.

[0031] As preferred, the supporting ball head is provided with a mounting rod away from the top of the connecting shell, the mounting rod is provided with a tripod, and the tripod is provided with a conical flow guide. The tripod provides a mounting position for the conical flow guide, and the conical flow guide can guide the stirred dyeing residual liquid to the conical cap for primary filtration.

[0032] As preferred, the mounting rod is connected with the conical cap, the tripod is located between the conical cap and the supporting ball head on the mounting rod, and the conical cap is provided with a three-rib body which is attached to the inner wall surface of the connecting shell. A plurality of water leakage holes on the conical cap can perform primary filtration on the stirred dyeing residual liquid to remove large suspended particles therein; the three-rib body is attached to the inner wall surface of the connecting shell, and when the supporting ball head rotates, the substances adhered to the inner wall of the connecting shell can be filtered down for subsequent physical concentration treatment.

[0033] As preferred, the conical cap is provided with a plurality of water leakage holes which are distributed on the side and bottom of the conical cap. The plurality of water leakage holes can perform primary filtration on the stirred dyeing residual liquid to remove large suspended particles therein.

[0034] As preferred, the top driving device comprises a bracket which is arranged on the inner wall surface of the connecting shell, a guide rod which is slidably arranged on the bracket, a foreign matter filter disc which is arranged on one end of the guide rod close to the stirring device, a plurality of arc surface filter screens which are arranged in the foreign matter filter disc, and a plugging device which is arranged on the other end of the guide rod away from the stirring device. The arc surface filter screens and the foreign matter filter disc can further filter the dyeing residual liquid from the water leakage holes to further remove suspended particles therein; and the plugging device can cooperate with the sealing device to form a relatively closed environment in the treatment tank for pressure nanofiltration process.

[0035] As preferred, the sealing device comprises a first extending edge and a second extending edge, both of which are arranged on the inner wall surface of the connecting shell, and the outer surface of the first extending edge and the outer surface of the second extending edge are both provided with a sealing ring, and the inner surface of the first extending edge and the inner surface of the second extending edge are both provided with a flexible gasket, which is connected with the inner wall surface of the connecting shell. The first extending edge, the second extending edge, the sealing ring and the flexible gasket can cooperate with the plugging device to achieve good sealing effect.

[0036] As preferred, the outer surface of the first extending edge and the outer surface of the second extending edge are both arc surfaces. The first extending edge and the second extending edge with arc surface structure can better realize sealing cooperation with the plugging device.

[0037] As preferred, the plugging device comprises a top pressing disc, which is connected with the end of the guide rod away from the stirring device, and the outer wall surface of the top pressing disc cooperates with the sealing device, and the inner wall surface of the top pressing disc is provided with a floating block through a connecting rod. The top pressing disc can well cooperate with the first extending edge and the second extending edge to achieve good sealing effect, and the floating block can well bear the floating force of the dyeing residual liquid.

[0038] As preferred, the outer wall surface of the top pressing disc cooperates with the first extending edge and the second extending edge.

[0039] As preferred, the outer wall surface of the top pressing disc is provided with an annular clamping groove, which cooperates with the sealing ring. The annular clamping groove can cooperate with the sealing ring to achieve better sealing effect.

[0040] As preferred, the outer wall surface of the top pressing disc is an arc surface. It can have better sealing effect with the sealing device.

[0041] As preferred, the outer surface of the floating block is an arc surface. It can better float upward.

[0042] As preferred, the connecting rod is an arc rod.

[0043] As preferred, the recovery tank is divided into a first recovery bin and a second recovery bin by a partition plate. The first recovery bin is used for receiving the filter membrane concentrated liquid for re-concentration and re-processing, and the second recovery bin is used for receiving the reverse osmosis concentrated liquid for directly used in dyeing process.

[0044] As preferred, the reverse osmosis mechanism comprises a shell, the conveying pipe is communicated with the inside of the shell, the backflow pipe is communicated with the inside of the shell, the top of the shell is provided with an electric telescopic rod, the free end of the electric telescopic rod is provided with a sliding pressing plate, the sliding pressing plate is in sliding sealing with the inner wall surface of the shell, the inside of the shell is provided with a reverse osmosis membrane layer, and the reverse osmosis membrane is located at the lower part of the sliding pressing plate.

[0045] The present application has the following advantages:

[0046] (1) The dyeing residual liquid in the present application firstly passes through the water leakage hole, and the water leakage hole is equivalent to primary filtration, so that large particle suspensions in the dyeing residual liquid can be removed; the dyeing residual liquid continues to pass through the arc filter screen and the impurity filter disc for secondary filtration, so that the suspensions in the dyeing residual liquid are further removed;

[0047] (2) When the second filtrate floating plugging device is about to be completely matched and sealed with the sealing device, the addition of the dyeing residual liquid is stopped, so as to perform acid addition and pH adjustment before complete sealing; the pH of the second filtrate is adjusted to 8.5-9 by adding acid, so as to effectively prevent the formation of calcium carbonate; the dyeing residual liquid is continuously injected until the plugging device is completely sealed with the sealing device, so as to ensure subsequent good sealing and pressure dyeing residual liquid nanofiltration;

[0048] (3) The dyeing residual liquid passes through the nanofiltration membrane layer by pressure through the pressure device in a physical manner, so that the nanofiltration membrane concentrate and the nanofiltration membrane diluent are smoothly obtained; the pressure device is stopped after nanofiltration, and the pressure in the treatment tank is released, so as to convey the nanofiltration membrane concentrate to the first recovery bin through the infusion pump;

[0049] (4) The pH of the nanofiltration membrane diluent is adjusted back to 10-10.5 by adding alkali, so as to better reverse osmosis treatment in the subsequent process, and pure alkali and salt are better separated; the nanofiltration membrane diluent is pressed downward through the reverse osmosis membrane layer by physical pressure through the electric telescopic rod, so that the reverse osmosis diluent pure alkali liquid with qualified purity is concentrated, the pure alkali can be recycled and reused, and resource waste is reduced;

[0050] (5) the injected dyeing residual liquid is first uniformly spread by the spreading device, so that the dyeing residual liquid uniformly falls, and the dyeing residual liquid can be initially filtered by the spreading device in the process of uniform spreading; the dyeing residual liquid after uniform spreading falls on the jacking device, and the dyeing residual liquid after secondary filtration by the jacking device is further removed; when the dyeing residual liquid after secondary filtration fills the treatment tank, the injection of the dyeing residual liquid is stopped, the dyeing residual liquid floating on the jacking device and the sealing device are sealed, the pressurizer is started to pressurize the treatment tank, the dyeing residual liquid after rough filtration in the treatment tank is concentrated by the nanofiltration membrane layer, the nanofiltration dilute liquid after the nanofiltration membrane layer is further treated by the reverse osmosis mechanism, so that the soda ash and salt are separated, the obtained reverse osmosis soda liquid is recycled and reused, the whole treatment process is simple, and has certain economic value. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 is the first structural schematic diagram of the application;

[0052] Figure 2 is the second structural schematic diagram of the application;

[0053] Figure 3 is the third structural schematic diagram of the application;

[0054] Figure 4 is the fourth structural schematic diagram of the application;

[0055] Figure 5 is the structural schematic diagram of the reverse osmosis mechanism in the application;

[0056] Figure 6 is the structural schematic diagram of the spreading device in the application;

[0057] Figure 7 is the structural schematic diagram of the conical cap in the application;

[0058] Figure 8 is the structural schematic diagram of the jacking device in the application;

[0059] Figure 9 is the structural schematic diagram of the sealing device in the application;

[0060] Figure 10 is the structural schematic diagram of the first extension edge and the second extension edge in the application;

[0061] Figure 11 is Figure 10 is the enlarged view of A in

[0062] The marks in the drawings are: 100-treatment tank; 101-backflow pipe; 102-conveying pipe; 103-pressurizer; 104-nanofiltration membrane layer; 200-connection shell; 201-feeding pipe; 300-poking device; 301-supporting ball head; 302-poking piece device; 3021-poking piece main body; 3022-top perforation; 3023-middle perforation; 3024-bottom perforation; 303-mounting rod; 304-tripod; 305-conical guide chute; 306-conical cap; 307-triangular piece body; 308-leakage hole; 400-top driving device; 401-bracket; 402-guide rod; 403-impurity filter disc; 404-cambered filter screen; 405-plugging device; 4051-top pressing disc; 4052-connecting rod; 4053-floating block; 4054-annular clamping groove; 500-sealing device; 501-first extending edge; 502-second extending edge; 503-sealing ring; 504-flexible gasket; 600-recovery tank; 601-first recovery bin; 602-second recovery bin; 603-baffle; 700-reverse osmosis mechanism; 701-housing; 702-electric telescopic rod; 703-sliding pressing plate; 704-reverse osmosis membrane layer. DETAILED DESCRIPTION

[0063] The application will be further described in conjunction with the drawings and examples, but not as the basis for limiting the application.

[0064] The treatment method for recycling dyeing residual liquid includes the following steps,

[0065] (S01)injecting the dyeing residual liquid into the connection shell 200, and obtaining the first filtrate after the dyeing residual liquid is filtered through the leakage hole 308;

[0066] (S02)obtaining the second filtrate after the first filtrate in step (S01) passes through the cambered filter screen 404 and the impurity filter disc 403 in turn;

[0067] (S03)stopping adding the dyeing residual liquid when the second filtrate in step (S02) is about to be completely sealed with the sealing device 500 by the plugging device 405;

[0068] (S04)adding acid liquid in the connection shell, so that the pH of the second filtrate in step (S03) is 8.5-9; the acid liquid is a hydrochloric acid solution;

[0069] (S05)continuing to inject the dyeing residual liquid in the connection shell until the plugging device is completely sealed with the sealing device;

[0070] (S06)Start the pressure generator 103, so that the second filtrate after adjusting pH in the treatment tank 100 passes through the nanofiltration membrane layer 104, to obtain the nanofiltration membrane concentrate left on the nanofiltration membrane layer and the nanofiltration membrane diluent after passing through the nanofiltration membrane layer; the molecular weight cut-off of the nanofiltration membrane layer is 800Da-1500Da; the nanofiltration membrane is a ceramic nanofiltration membrane;

[0071] (S07)After the nanofiltration of the second filtrate in the treatment tank in step (S06) is completed, stop the pressure generator and depressurize the treatment tank;

[0072] (S08)After the depressurization in step (S07) is completed, the nanofiltration membrane concentrate is transported into the first recovery bin 601 in the recovery tank 600 through the infusion pump;

[0073] (S09)Add alkali solution in the connecting shell to adjust the pH of the nanofiltration membrane diluent in the treatment tank to 10-10.5; the alkali solution is sodium hydroxide solution;

[0074] (S10)Transport the nanofiltration membrane diluent after adjusting pH in step (S09) to the reverse osmosis mechanism 700 through the infusion pump;

[0075] (S11)Start the electric telescopic rod 702 in the reverse osmosis mechanism, so that the nanofiltration membrane diluent in the shell 701 passes through the reverse osmosis membrane layer 704; the molecular weight cut-off of the reverse osmosis membrane layer is 100Da-400Da;

[0076] (S12)After reverse osmosis in step (S11), the reverse osmosis concentrate left on the reverse osmosis membrane layer is transported into the second recovery bin 602 in the recovery tank through the delivery pump, and the reverse osmosis diluent after passing through the reverse osmosis membrane layer is discharged.

[0077] As shown in Figure 1 , Figure 2 and Figure 3 , the treatment device for recycling dyeing residual liquid comprises a treatment tank 100, the top of the treatment tank is provided with a connecting shell 200, the inside of the connecting shell is sequentially provided from top to bottom with a Figure 6 dabbing device 300 and a Figure 9 , Figure 10 and Figure 11 sealing device 500 is arranged at the connection between the inside of the connecting shell and the treatment tank; the bottom of the treatment tank is provided with a recovery tank 600, the recovery tank is connected with a Figure 5 reverse osmosis mechanism 700 through a backflow pipe 101, the reverse osmosis mechanism is connected with the treatment tank through a delivery pipe 102; the inner wall surface of the treatment tank is provided with a Figure 4The shown pressurizer 103, the inside of the processing tank is provided with a nanofiltration membrane layer 104, and the inlet pipe 201 is connected to the communication hole on the shell. The recovery tank is divided into a first recovery chamber 601 and a second recovery chamber 602 by a partition plate 603.

[0078] The stirring device 300 includes a support ball head 301, which is rotatably arranged at the top of the connecting shell 200, and a stirring piece device 302 arranged on the support ball head. The stirring piece device includes a plurality of stirring piece bodies 3021 arranged on the outer wall surface of the support ball head, and a top hole 3022, a middle hole 3023, and a bottom hole 3024 arranged in sequence on the stirring piece body. The stirring piece body is arranged obliquely on the support ball head. The position of the support ball head away from the top of the connecting shell is provided with a mounting rod 303, and a tripod 304 is arranged on the mounting rod 303, and a conical guide chute 305 is arranged on the tripod 304. The mounting rod 303 is connected with a Figure 7 The shown conical cap 306, the tripod is located between the conical cap and the support ball head on the mounting rod, and the conical cap is provided with a three-pronged piece body 307 which is in close contact with the inner wall surface of the connecting shell. A plurality of water leakage holes 308 are arranged on the conical cap, which are distributed on the side and bottom of the conical cap.

[0079] The top driving device 400 includes a bracket 401 arranged on the inner wall surface of the connecting shell 200, and a guide rod 402 slidingly arranged on the bracket 401. The end of the guide rod 402 close to the stirring device is provided with a impurity filter disc 403, and a plurality of arc filter screens 404 are arranged in the impurity filter disc 403. The end of the guide rod 402 away from the stirring device is provided with a plugging device 405.

[0080] The sealing device 500 includes a first extension edge 501 and a second extension edge 502, both of which are arranged on the inner wall surface of the connecting shell 200. The outer surfaces of the first extension edge 501 and the second extension edge 502 are both provided with a sealing ring 503, and the inner surfaces of the first extension edge 501 and the second extension edge 502 are both provided with a flexible gasket 504 which is connected with the inner wall surface of the connecting shell. The outer surfaces of the first extension edge 501 and the second extension edge 502 are both arc surfaces. The plugging device 405 includes a top pressing disc 4051 connected with the end of the guide rod 402 away from the stirring device, and the outer wall surface of the top pressing disc 4051 is matched with the sealing device. The inner wall surface of the top pressing disc 4051 is provided with a Figure 8 The shown floating block 4053. The outer wall surface of the top pressing disc 4051 is matched with the first extension edge 501 and the second extension edge 502. The outer wall surface of the top pressing disc 4051 is provided with an annular clamping groove 4054 matched with the sealing ring. The outer wall surface of the top pressing disc 4051 is an arc surface. The outer surface of the floating block 4053 is an arc surface. The connecting rod 533 is an arc rod.

[0081] The reverse osmosis mechanism 700 comprises a shell 701, the conveying pipe 102 is communicated with the inside of the shell, the backflow pipe 101 is communicated with the inside of the shell, the top of the shell is provided with an electric telescopic rod 702, the free end of the electric telescopic rod is provided with a sliding pressing plate 703, the sliding pressing plate is slidingly and sealingly arranged with the inner wall surface of the shell, the inside of the shell is provided with a reverse osmosis membrane layer 704, and the reverse osmosis membrane is located at the lower part of the sliding pressing plate.

[0082] The treatment method of recycling dyeing residual liquid, the dyeing residual liquid is first injected into the connecting shell 200, the dyeing residual liquid pressure is applied to the stirring device 300, so that the dyeing residual liquid is stirred and filtered, the impurities in the dyeing residual liquid are filtered in time by using the arc surface filter screen 404 and the impurity filter disc 403, the suspended solids in the dyeing residual liquid are removed, and the top driving device 400 moves upward under the action of the buoyancy of the plugging device 405, the dyeing residual liquid is blocked by the interaction between the plugging device and the sealing device 500; the pH of the filtered dyeing residual liquid is adjusted to 8.5-9 by adding hydrochloric acid at the inlet pipe 201, and the filtrate is pressurized by the pressure device 103, and the gas pressure is increased; under the gas pressure, the concentration is carried out by the nanofiltration membrane layer 104, the concentration multiple is 4-10 times, the nanofiltration membrane concentrate and the nanofiltration membrane diluent are obtained, the nanofiltration membrane concentrate above the nanofiltration membrane layer is conveyed from the right side of the treatment tank 100 to the first recovery bin 601 under the action of the conveying pump; the nanofiltration membrane diluent is adjusted to pH 10-10.5 by adding sodium hydroxide solution at the inlet pipe, and the nanofiltration membrane diluent is conveyed to the reverse osmosis mechanism 700 by the conveying pump on the conveying pipe 102; the electric telescopic rod 702 in the reverse osmosis mechanism pushes the sliding pressing plate 703 to move downward, and then the reverse osmosis membrane layer 704 is concentrated under pressure, the concentration multiple is 4-10 times, the reverse osmosis concentrate and the reverse osmosis diluent are obtained, the reverse osmosis concentrate is discharged into the second recovery bin 602 by the conveying pump, and the reverse osmosis diluent is taken out for standby; the reverse osmosis concentrate can be directly used for dyeing process, and the reverse osmosis diluent is used as production water, such as being used as dyeing water washing and soaping water washing, resources are recycled and utilized, and resource waste is reduced.

[0083] The utility model discloses a processing device of recycling dyeing residual liquid, including processing jar 100 and reverse osmosis mechanism 700, the top central position of processing jar is fixedly connected with connecting shell 200, and the inside of connecting shell is close to the top position and is provided with the device 300 of stirring, and the inside of connecting shell is provided with the device 400 of top drive, and the inner surface of connecting shell is close to the position of the device of top drive and is fixedly connected with sealing device 500, and the bottom of processing jar is installed with recovery jar 600, and the liquid inlet of recovery jar is communicated with backflow pipe 101, and the one end of backflow pipe is communicated with the liquid outlet of reverse osmosis mechanism away from recovery jar, and the liquid inlet of reverse osmosis mechanism is communicated with conveying pipe 102, and the one end of conveying pipe is communicated with the bottom of processing jar away from reverse osmosis mechanism, and the inner surface of processing jar is fixedly connected with pressurizer 103, and the inner surface of processing jar is fixedly connected with nanofiltration membrane layer 104, and the left side of the outer surface of connecting shell is fixed and is communicated with the inlet pipe 201 of material,

[0084] The device 400 includes a bracket 401, the left and right ends of the bracket are fixedly connected with the inner surface of the connecting shell 200, a guide rod 402 is slidingly connected at the center of the bracket, the guide rod passes through the center of the sealing device 500, a blocking device 405 is fixedly connected to the bottom end of the guide rod, a impurity filter disc 403 is fixedly connected to the top of the guide rod, and an arc filter screen 404 is fixedly connected to the impurity filter disc.

[0085] The reverse osmosis mechanism 700 comprises a shell 701, the top end of the conveying pipe 102 is fixed and communicated with the outer surface of the shell, the right end of the backflow pipe 101 is fixed and communicated with the bottom of the shell, the top of the shell is fixedly connected with an electric telescopic rod 702, the output end of the electric telescopic rod is fixedly connected with a sliding pressing plate 703, the outer surface edge of the sliding pressing plate is slidingly and sealingly connected with the inner surface of the shell, the inner surface of the shell and close to the bottom position is fixedly connected with a reverse osmosis membrane layer 704, the dyeing residual liquid pressure is used to drive the stirring device 300, the dyeing residual liquid is stirred, the dyeing residual liquid falls uniformly, the impurities in the dyeing residual liquid are filtered in time by the arc surface filter screen 404 and the impurity filter disc 403, the arc surface filter screen is uniformly distributed on the top of the impurity filter disc, the arc surface filter screen gathers the impurities, shields the impurity filter disc part, and in combination with the impact of the fluid, the impurities can be gathered in time, so that the blockage is not easy to occur, as the liquid flows into the treatment tank 100, the liquid is pressurized by the pressurizer 103, as the gas pressure increases, the nanofiltration membrane layer 104 concentrates the liquid, as the liquid level rises, the dyeing residual liquid is blocked by the interaction between the jacking device 400 and the sealing device 500, the nanofiltration membrane concentrate is discharged into the first recovery bin 601 by the conveying pump, the nanofiltration membrane diluent in the treatment tank is adjusted by adding sodium hydroxide solution at the material pipe 201, and the adjusted nanofiltration membrane diluent is discharged into the reverse osmosis mechanism, under the action of pressure, the liquid is concentrated by the reverse osmosis membrane layer, at this time, the reverse osmosis concentrate is discharged into the second recovery bin 602, and the reverse osmosis diluent is recycled and reused.

[0086] The stirring device 300 comprises a support ball head 301 and a conical guide funnel 305, the top end of the support ball head is rotationally connected with the top inner surface of the connecting shell 200, the bottom end of the support ball head is provided with a mounting rod 303, the mounting rod is provided with a tripod 304, the tripod is provided with the conical guide funnel 305, and the outer surface of the support ball head is fixedly connected with a stirring piece device 302. The stirring piece device comprises a stirring piece body 3021, the outer surface edge of the stirring piece body is fixedly connected with the outer surface of the support ball head, the outer surface of the stirring piece body is provided with a top hole 3022 near the top position, the outer surface of the stirring piece body is provided with a middle hole 3023 near the central position, the outer surface of the stirring piece body is provided with a bottom hole 3024 near the bottom position, the end of the mounting rod is fixedly connected with a conical cap 306, the side surface and the bottom of the conical cap are provided with water leakage holes 308, the bottom edge of the conical cap is fixedly connected with a three-rib body 307, and the side surface edge of the three-rib body is attached to the inner surface of the connecting shell. When the support ball head rotates, the conical cap is driven to rotate, and the three-rib body is driven to rotate, at this time, the three-rib body in rotation can scrape off the impurities adhered to the inner surface of the connecting shell in time, and at the same time, the dyeing residual liquid falls in the connecting shell, at this time, the conical cap blocks the dyeing residual liquid, and the fluid flows downward from the water leakage holes, which plays a role of slow flow and preliminary filtration, thereby reducing the impact force of the fluid on the arc surface filter screen and the impurity filter disc. The stirring piece body is inclined, and the top hole, the middle hole and the bottom hole are uniformly distributed on the outer surface of the stirring piece body, when the dyeing residual liquid is injected into the connecting shell, the liquid pressure impacts on the stirring piece device, and the support ball head is rotationally connected in the connecting shell, so that the support ball head drives the stirring piece device to rotate, and the stirring piece device in rotation uniformly stirs the dyeing residual liquid, and part of the liquid passes through the top hole, the middle hole and the bottom hole, which further promotes the falling of the dyeing residual liquid, thereby helping the subsequent arc surface filter screen 404 and impurity filter disc 403 to remove the impurities in the liquid, fully utilizing the impact of the liquid as power to promote the subsequent treatment of the dyeing residual liquid.

[0087] The sealing device 500 comprises a first extending edge 501 and a second extending edge 502, the top of the first extending edge and the top of the second extending edge are fixedly connected with the inner surface of the connecting shell 200 and are close to the bottom position, the outer surface of the first extending edge and the outer surface of the second extending edge are fixedly connected with the sealing ring 503, the outer surface of the first extending edge and the outer surface of the second extending edge and the side away from the sealing ring are fixedly connected with the flexible gasket 504, and the top of the flexible gasket is fixedly connected with the inner surface of the connecting shell. The outer surface of the first extending edge and the outer surface of the second extending edge are provided as a circular arc surface, the first extending edge, the second extending edge, the sealing ring and the flexible gasket are provided as a circular closed loop, when the upwardly moving top pressing disc 4051 top-presses the first extending edge and the second extending edge, the contact area is increased, so that the first extending edge, the second extending edge and the flexible gasket are pressed, the materials of the first extending edge, the second extending edge and the flexible gasket are all provided as rubber materials, the flexible gasket is good in flexibility and has a sealing effect, and at the same time, when the annular clamping groove 4054 is clamped on the outer surface of the sealing ring, the sealing ring is in the inside of the annular clamping groove, so that the labyrinth sealing is realized, and the sealing of the dyeing residual liquid is promoted.

[0088] The sealing device 500 comprises a first extending edge 501 and a second extending edge 502, the top of the first extending edge and the top of the second extending edge are fixedly connected with the inner surface of the connecting shell 200 and are close to the bottom position, the outer surface of the first extending edge and the outer surface of the second extending edge are fixedly connected with the sealing ring 503, the outer surface of the first extending edge and the outer surface of the second extending edge and the side away from the sealing ring are fixedly connected with the flexible gasket 504, and the top of the flexible gasket is fixedly connected with the inner surface of the connecting shell. The outer surface of the first extending edge and the outer surface of the second extending edge are provided as a circular arc surface, the first extending edge, the second extending edge, the sealing ring and the flexible gasket are provided as a circular closed loop, when the upwardly moving top pressing disc 4051 top-presses the first extending edge and the second extending edge, the contact area is increased, so that the first extending edge, the second extending edge and the flexible gasket are pressed, the materials of the first extending edge, the second extending edge and the flexible gasket are all provided as rubber materials, the flexible gasket is good in flexibility and has a sealing effect, and at the same time, when the annular clamping groove 4054 is clamped on the outer surface of the sealing ring, the sealing ring is in the inside of the annular clamping groove, so that the labyrinth sealing is realized, and the sealing of the dyeing residual liquid is promoted.

[0089] The working process of the present application is as follows:

[0090] When the dyeing residual liquid is injected into the connecting shell 200 during use, the liquid pressure impacts on the paddle device 302, and the supporting ball head 301 is rotationally connected in the interior of the connecting shell, so that the supporting ball head drives the paddle device to rotate, and then the rotating paddle device uniformly spreads the dyeing residual liquid, and part of the liquid passes through the top perforation 3022, the middle perforation 3023 and the bottom perforation 3024, further promoting the falling of the dyeing residual liquid, and then helping the subsequent arc surface filter screen 404 and the impurity filter disc 403 to remove the impurities in the liquid, and when the dyeing residual liquid is continuously injected into the treatment tank 100, the floating block 4053 floats on the liquid surface as the liquid level rises, and the center of the guide rod 402 and the support 401 is slidingly connected, and then the floating block pushes the top pressure disc 4051 upward as a whole, so that the top pressure disc exerts a top pressure on the sealing device 500, and the annular clamping groove 4054 is clamped at the sealing ring 503 on the sealing device, thereby blocking the dyeing residual liquid, which helps to process the dyeing residual liquid in the treatment tank, and the guide rod is also driven to move upward, so that the arc surface filter screen and the impurity filter disc are driven to move, and under the impact of the liquid, the filtered impurities are not easy to deposit on the surface of the arc surface filter screen and the surface of the impurity filter disc, thereby avoiding the blockage, and when the top pressure disc moves upward to top-press the first extension edge 501 and the second extension edge 502, the contact area is increased, so that the first extension edge, the second extension edge and the flexible gasket 504 are pressed, and the materials of the first extension edge, the second extension edge and the flexible gasket are all made of rubber material, which is flexible and has a sealing effect, and at the same time, the annular clamping groove is clamped outside the sealing ring, so that the sealing ring is inside the annular clamping groove, thereby realizing the labyrinth seal, promoting the blocking of the dyeing residual liquid, and after the processing is completed, the concentrated liquid is discharged into the first recovery bin 601, and the weak liquid in the treatment tank is adjusted by adding alkali liquid from the feed pipe 201, and the adjusted weak liquid is discharged into the reverse osmosis mechanism 700, and under the action of pressure, the liquid is concentrated by the reverse osmosis membrane layer 704, and then the concentrated liquid after reverse osmosis is discharged into the second recovery bin 602, and the weak liquid is recycled.

[0091] The dyeing residual liquid is first filtered to remove suspended substances in the waste water; the filtered water is added with acid at the inlet pipe 201, and the filtrate is pressurized by the pressurizer 103 to increase the gas pressure, and under the gas pressure, the liquid is concentrated by the nanofiltration membrane layer 104 to obtain nanofiltration membrane concentrated liquid and nanofiltration membrane dilute liquid, and the nanofiltration membrane concentrated liquid is introduced into the first recovery bin 601, and the nanofiltration membrane dilute liquid is transported to the reverse osmosis mechanism 700 through the conveying pipe 102; the nanofiltration membrane dilute liquid is added with liquid alkali at the inlet pipe; under pressure, the liquid is concentrated by the reverse osmosis membrane, and the concentration multiple is 4-10 times to obtain reverse osmosis concentrated liquid and reverse osmosis dilute liquid, and the reverse osmosis concentrated liquid is discharged into the second recovery bin 602, and the reverse osmosis dilute liquid is taken out for standby, so that the resources are recycled and utilized to reduce resource waste.

[0092] When the dyeing residual liquid is injected into the connecting shell 200 through the liquid injection port, the liquid injection pressure is used to drive the stirring device 300 to stir the dyeing residual liquid, and the arc-shaped filter screen 404 and the impurity filter disc 403 are used to filter the impurities in the waste water in time. The arc-shaped filter screen is uniformly distributed on the top of the impurity filter disc, and the arc-shaped filter screen is used to collect the impurities and shield the impurity filter disc. The impurities can be collected in time under the impact of the fluid, so that the arc-shaped filter screen and the impurity filter disc are not easy to be blocked. When the liquid flows into the treatment tank 100, the liquid is pressurized by the pressurizer 103. As the gas pressure increases, the dilute liquid passes through the nanofiltration membrane layer 104, so that the nanofiltration membrane layer concentrates the liquid. As the liquid level rises, the top drive device 400 and the sealing device 500 interact with each other to block the dyeing residual liquid. The concentrated liquid is discharged into the first recovery bin 601, and the dilute liquid below the nanofiltration membrane layer is added with alkali liquid at the inlet pipe to adjust the pH value. The adjusted dilute liquid is discharged into the reverse osmosis mechanism 700. Under the action of pressure, reverse osmosis concentrated liquid and reverse osmosis dilute liquid are obtained. The reverse osmosis concentrated liquid is discharged into the second recovery bin 602, and the dilute liquid is recycled.

[0093] When the dyeing residual liquid is injected into the connecting shell 200, the liquid pressure impacts on the stirring piece device 302, and the support ball head 301 is rotatably connected in the connecting shell, so that the support ball head drives the stirring piece device to rotate, and the rotating stirring piece device uniformly stirs the dyeing residual liquid, so that the dyeing residual liquid uniformly falls, and part of the liquid passes through the top perforation 3022, the middle perforation 3023 and the bottom perforation 3024, which further promotes the falling of the dyeing residual liquid, and helps the subsequent arc-shaped filter screen 404 and impurity filter disc 403 to remove the impurities in the liquid. The impact of the liquid is used as power to promote the subsequent treatment of the dyeing residual liquid.

[0094] When the support ball head 301 drives the conical cap 306 to rotate, the triangular plate body 307 is driven to rotate, and the inner surface of the connecting shell 200 can scrape off the impurities adhered thereon in time. At the same time, as the dyeing residual liquid falls in the connecting shell, the conical cap blocks the dyeing residual liquid, and the liquid flows downward from the water leakage hole 308, thereby reducing the impact force of the liquid on the curved filter screen 404 and the impurity filter disc 403.

[0095] When the dyeing residual liquid is continuously injected into the treatment tank 100, the floating block 4053 floats on the liquid surface, and the center of the guide rod 402 and the support 401 is slidingly connected, so that the floating block pushes the top pressing disc 4051 upward as a whole, the top pressing disc applies a pressing force to the sealing device 500, and the annular clamping groove 4054 is clamped at the sealing ring 503 of the sealing device, thereby blocking the dyeing residual liquid, which is helpful for treating the dyeing residual liquid in the treatment tank. At the same time, the guide rod is also driven to move upward, so that the curved filter screen 404 and the impurity filter disc 403 are driven to move. The curved filter screen and the impurity filter disc in movement can prevent the filtered impurities from being deposited on the surface of the curved filter screen and the surface of the impurity filter disc under the impact of the liquid, and the flowing liquid can impact the impurities, thereby preventing the impurities from being blocked.

[0096] When the top pressing disc 4051 moves upward and presses the first extension edge 501 and the second extension edge 502, the contact area is increased, so that the first extension edge, the second extension edge and the flexible gasket 504 are pressed. The materials of the first extension edge, the second extension edge and the flexible gasket are all rubber materials, which are flexible and have a sealing effect. At the same time, the annular clamping groove 4054 is clamped on the outer surface of the sealing ring 503, so that the sealing ring is inside the annular clamping groove, thereby realizing the labyrinth seal and promoting the blocking of the dyeing residual liquid.

[0097] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical solution and improvement concept of the present application within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A treatment device for recycling dyeing residue, characterized in that: The system includes a treatment tank (100), a connecting shell (200) at the top of the treatment tank, and a dispensing device (300) and a jacking device (400) arranged sequentially from top to bottom inside the connecting shell, with part of the jacking device located inside the treatment tank; a sealing device (500) is provided at the connection between the connecting shell and the treatment tank; a recovery tank (600) is provided at the bottom of the treatment tank, and a reverse osmosis mechanism (700) is connected to the recovery tank via a return pipe (101), the reverse osmosis mechanism being connected to the treatment tank via a delivery pipe (102); a pressure booster (103) is provided on the inner wall of the treatment tank. The internal structure is provided with a nanofiltration membrane layer (104), and the connecting shell is connected to an inlet pipe (201); the dispensing device includes a support ball head (301), which is rotatably disposed at the top inside the connecting shell, and the support ball head is provided with a dispensing device (302); the pushing device includes a bracket (401), which is disposed on the inner wall surface of the connecting shell, and a guide rod (402) is slidably disposed on the bracket, and an impurity filter plate (403) is provided at one end of the guide rod near the dispensing device, and a plurality of arc-shaped filter screens (404) are provided in the impurity filter plate, and a sealing device (405) is provided at the one end of the guide rod away from the dispensing device. The supporting ball head is provided with an installation rod (303) at a position away from the top of the connecting shell, and a tripod (304) is provided on the installation rod, and a conical guide bucket (305) is provided on the tripod. A conical cap (306) is connected to the mounting rod. The tripod is located on the mounting rod between the conical cap and the supporting ball head. A triangular prism (307) is provided on the conical cap. The triangular prism fits against the inner wall of the connecting shell. A number of drainage holes (308) are provided on the conical cap. The drainage holes are distributed on the side and bottom of the conical cap.

2. The treatment device for recycling dyeing residue as described in claim 1, characterized in that: The paddle device includes several paddle bodies (3021), which are disposed on the outer wall surface of the support ball head. The paddle bodies are provided with a top through hole (3022), a middle through hole (3023), and a bottom through hole (3024) in sequence.

3. The treatment device for recycling dyeing residue as described in claim 1, characterized in that: The sealing device includes a first extension edge (501) and a second extension edge (502). The first extension edge and the second extension edge are both disposed on the inner wall surface of the connecting shell. A sealing ring (503) is provided on the outer surface of the first extension edge and the outer surface of the second extension edge. A flexible gasket (504) is provided on the inner surface of the first extension edge and the inner surface of the second extension edge. The flexible gasket is connected to the inner wall surface of the connecting shell.

4. The treatment device for recycling dyeing residue as described in claim 3, characterized in that: The sealing device includes a top pressure plate (4051), which is connected to the end of the guide rod away from the spraying device. The outer wall of the top pressure plate cooperates with the sealing device, and a floating block (4053) is provided on the inner wall of the top pressure plate through a connecting rod (4052).

5. The treatment device for recycling dyeing residue according to claim 4, characterized in that: The outer wall surface of the top pressure plate mates with the first extension edge and the second extension edge; the outer wall surface of the top pressure plate is provided with an annular groove (4054), which mates with the sealing ring.

6. The treatment device for recycling dyeing residue according to claim 1, characterized in that: The reverse osmosis mechanism includes a housing (701), the delivery pipe is connected to the inside of the housing, the return pipe is connected to the inside of the housing, the top of the housing is provided with an electric telescopic rod (702), the free end of the electric telescopic rod is provided with a sliding pressure plate (703), the sliding pressure plate is slidably sealed to the inner wall surface of the housing, and the inside of the housing is provided with a reverse osmosis membrane layer (704), the reverse osmosis membrane is located below the sliding pressure plate.

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