A cellulose ether wastewater treatment pool and treatment process

Abstract

The present invention relates to the technical field of sewage treatment, and proposes a cellulose ether wastewater treatment pool and treatment process, including a sedimentation tank, the sedimentation tank having a pool cavity, the pool cavity having an inlet, an outlet and an overflow port, the overflow port being located at the top of the pool cavity, the inlet being located in the middle of the pool cavity, the outlet being located at the bottom of the pool cavity, a rotating member being rotatably arranged at the bottom of the pool cavity, the rotating member having a cavity, the cavity having a feed port and a discharge port, the feed port being located at the front of the rotating member, the rotating member also having a shoveling part, the shoveling part being located in front of the feed port and abutting against the pool bottom of the pool cavity, the discharge port being connected to the outlet, a moving member being movably arranged in the cavity, and the moving direction being along the radial direction of the rotating member, and a scraper member being arranged on the moving member. Through the above technical scheme, the problems of poor flocculation effect or bottom sludge accumulation in the sedimentation tank in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a cellulose ether wastewater treatment pool and a treatment process. Background Art

[0002] In the sewage treatment process, physical and chemical or physical and chemical plus biochemical methods are generally used. For low-concentration polluted wastewater, physical and chemical treatment is generally used. Generally, the wastewater is collected and merged into a wastewater pool, and pumped into the reaction zone through a wastewater pump. A flocculation agent is added to the reaction zone. After the flocculation agent and the sewage are mixed, it enters the sedimentation zone for flocculation and sedimentation. The flocs at the bottom of the sedimentation zone are pumped into a filter press by a diaphragm pump for filtration to separate the wastewater and the flocs. In the existing sedimentation zone, in order to discharge the flocs from the sedimentation tank, a sewage pump is generally used to discharge mud. However, in the actual production process of cellulose ether wastewater, the sediment will form a plate agglomerate, not a muddy substance, making it difficult to discharge. In order to avoid the formation of agglomerates, a stirring mechanism will be used to scrape the bottom, but it is not convenient to discharge sewage after using the stirring mechanism, and flocs will appear in the clear water layer. Finally, the sedimentation tank of the prior art results in poor flocculation effect or accumulation of sludge at the bottom. Summary of the invention

[0003] The invention provides a cellulose ether wastewater treatment tank and a treatment process, which solve the problems of poor flocculation effect or bottom sludge accumulation in the sedimentation tank in the related art.

[0004] The technical solution of the present invention is as follows:

[0005] A cellulose ether wastewater treatment pool, comprising

[0006] A sedimentation tank, wherein the sedimentation tank has a tank cavity, wherein the tank cavity has an inlet, an outlet and an overflow port, wherein the overflow port is located at the top of the tank cavity, the inlet is located in the middle of the tank cavity, and the outlet is located at the bottom of the tank cavity.

[0007] A rotating member, the rotating member is rotatably arranged at the bottom of the pool cavity, the rotating member has a cavity, the cavity has a feed port and a discharge port, the feed port is located at the front part of the rotating member, the rotating member also has a shoveling part, the shoveling part is in front of the feed port and abuts against the bottom of the pool cavity, the discharge port leads to the outlet,

[0008] A moving member, wherein the moving member is movably disposed in the cavity, and the moving direction is along the radial direction of the rotating member,

[0009] A scraper member is arranged on the moving member.

[0010] As a further technical solution, the upper end of the scraper member is swingably set on the moving member, and the lower end abuts against the bottom of the cavity; the scraper member swings axially perpendicular to the moving direction of the moving member, and the scraper member is located on the side of the moving member close to the outlet; the moving member has a blocking portion, and the blocking portion is located on the side of the scraper member away from the outlet, so that when the scraper member moves toward the outlet, the scraper member is blocked by the blocking portion and the lower end abuts against the bottom of the cavity, and when it moves away from the outlet, the scraper member swings and cancels the abutment with the bottom of the cavity.

[0011] As a further technical solution, the bottom of the cavity has a plurality of scraping grooves, the length direction of the scraping grooves is parallel to the moving direction of the moving member; the lower end of the scraper member has a plurality of scraping parts, and the scraping parts are slidably arranged in the scraping grooves.

[0012] As a further technical solution, the rotating member further comprises a guide groove, the direction of the guide groove is parallel to the moving direction of the moving member, the moving member comprises a first guide portion and a second guide portion, the first guide portion is slidably disposed in the guide groove, and further comprises

[0013] A driving shaft, wherein the driving shaft is rotatably disposed on the rotating member, and the axial direction thereof is parallel to the moving direction of the moving member, the driving shaft has a reciprocating groove, and the second guide portion is slidably disposed in the reciprocating groove,

[0014] A driving wheel is arranged on the driving shaft and is located at a side of the rotating member away from the outlet and in contact with the pool bottom of the pool cavity.

[0015] As a further technical solution, the shoveling part has a closing portion at one end close to the discharge port, and the closing portion has a material baffle plate. After the scraper moves, it abuts against or cancels the abutment with the material baffle plate, and the cavity wall of the cavity and the material baffle plate are both mesh structures.

[0016] As a further technical solution, it also includes

[0017] An overflow tank is arranged around the sedimentation tank and is used to collect the liquid flowing out of the overflow port.

[0018] The first evaporation tank, the second evaporation tank, the third evaporation tank, the fourth evaporation tank, the fifth evaporation tank, and the sixth evaporation tank all have a steam outlet, a condensation port, and a collection port.

[0019] a condenser, wherein the first evaporation tank, the second evaporation tank, the third evaporation tank, the fourth evaporation tank, the fifth evaporation tank, and the sixth evaporation tank are connected through the condenser, one end of the condenser is connected to the steam outlet, and the other end is connected to the condensation port,

[0020] A semipermeable membrane, wherein the semipermeable membrane is arranged at the steam outlet.

[0021] A collecting tank, each of the collecting ports is connected to one of the collecting tanks, and the steam outlet of the sixth evaporation tank is connected to the collecting tank.

[0022] As a further technical solution, it also includes

[0023] The cooling pipes are multiple and are wound around the condensing pipe in sequence.

[0024] As a further technical solution, the first evaporation tank, the second evaporation tank, the third evaporation tank, the fourth evaporation tank, and the fifth evaporation tank all have a heating layer, the sixth evaporation tank has a hydrothermal layer, and the cooling pipe leads to the hydrothermal layer.

[0025] As a further technical solution, it also includes

[0026] a feed pipe, the feed pipe being in communication with the inlet,

[0027] A drug adding pipe is connected with the feed pipe.

[0028] The cellulose ether wastewater treatment process uses a cellulose ether wastewater treatment pool.

[0029] The working principle and beneficial effects of the present invention are:

[0030] The present invention is designed with a sedimentation tank, wherein a large-capacity tank cavity is provided inside the sedimentation tank, and the tank cavity has clear functional divisions, including an overflow port at the top for discharging the clear water layer of the upper layer; an inlet at the middle of the tank cavity for receiving the cellulose ether wastewater to be treated; and an outlet at the bottom of the tank cavity for discharging the sediment formed after fermentation and sedimentation; wherein the inlet is located in the middle, and compared with the inlet arranged at the upper part of the prior art, a flocculant is injected into the sewage while discharging the sewage, and the flocculant is fully mixed under the action of the flowing sewage, and the stirring equipment of the ordinary flocculation sedimentation tank is eliminated, and the flocculation effect of the flocculant can also be guaranteed. Under the action of impact, the tank cavity is divided into a clean water layer, a sedimentation layer and a turbulent layer, the turbulent layer is stirred under the action of the sewage entering from the inlet, and the sedimentation layer is slowly settled, and the heavy objects in the clean water layer can enter the sedimentation layer through the turbulent layer, and the flocculants are accumulated under the action of gravity.

[0031] A rotating part is installed at the bottom of the sedimentation tank cavity. The rotating part can rotate autonomously and has a cavity structure inside. A feed port is provided on the cavity. The feed port is designed at the front end of the rotating part in the rotational forward direction, so that the sediment can enter the cavity during the rotation process; a shoveling part is also specially provided on the rotating part. The shoveling part is close to the bottom of the tank cavity and keeps in contact with it, and can push and shovel the sediment at the bottom of the tank forward to facilitate collection at the feed port. In the cavity of the rotating part, a moving part that can move radially along the rotating part is also provided. The moving part can move back and forth in the cavity to facilitate the pushing and collection of the sediment inside the cavity. A scraper part is installed on the moving part. As the moving part moves, the scraper part can not only help the shoveling part to further improve the collection efficiency of the sediment, but also scrape the inner wall of the cavity to prevent material adhesion and accumulation, ensure the cleanliness of the cavity, and improve the wastewater treatment efficiency and the service life of the equipment. With the rotation of the rotating parts and the reciprocating movement of the moving parts, the sediments at the bottom of the pool are continuously collected into the cavity and discharged to the outlet at the bottom of the pool cavity through the discharge port, thereby realizing the continuous and efficient operation of the wastewater treatment pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the sedimentation tank and the overflow tank in the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the rotating part in the present invention;

[0036] Figure 4 It is a partial structural schematic diagram of the present invention;

[0037] In the figure: sedimentation tank 1, tank cavity 101, inlet 102, outlet 103, overflow port 104, rotating member 2, cavity 202, feed port 201, discharge port 203, shovel part 204, moving member 3, scraper member 4, stopper 301, scraper groove 205, scraper part 401, guide groove 206, first guide part 302, second guide part 303, drive shaft 5, Composite tank 501, driving wheel 6, closing part 207, material baffle plate 208, overflow tank 7, first evaporation tank 8, second evaporation tank 9, third evaporation tank 10, fourth evaporation tank 11, fifth evaporation tank 12, sixth evaporation tank 13, steam outlet 14, condensation port 15, collection port 16, condensation pipe 17, collection tank 18, cooling pipe 19, feed pipe 20, dosing pipe 21. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0039] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0040] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0042] Reference Figure 1~Figure 4 , is an embodiment of the present invention, a cellulose ether wastewater treatment tank is proposed, including a sedimentation tank 1, the sedimentation tank 1 has a tank cavity 101, the tank cavity 101 has an inlet 102, an outlet 103 and an overflow port 104, the overflow port 104 is located at the top of the tank cavity 101, the inlet 102 is located in the middle of the tank cavity 101, the outlet 103 is located at the bottom of the tank cavity 101, the rotating member 2 is rotatably arranged at the bottom of the tank cavity 101, the rotating member 2 has a cavity 202, the cavity 202 has a feed port 201 and a discharge port 203, the feed port 201 is located at the front part of the rotation of the rotating member 2, the rotating member 2 also has a shoveling part 204, the shoveling part 204 is located in front of the feed port 201, and abuts against the tank bottom of the tank cavity 101, the discharge port 203 is connected to the outlet 103, the moving member 3 is movably arranged in the cavity 202, and the moving direction is along the radial direction of the rotating member 2, and the scraper member 4 is arranged on the moving member 3.

[0043] In this embodiment, a sedimentation tank 1 is designed, and a large-capacity tank chamber 101 is provided inside the sedimentation tank 1. The tank chamber 101 has clear functional divisions, including an overflow port 104 located at the top for discharging the clear water layer of the upper layer; an inlet 102 located in the middle of the tank chamber 101 for receiving the cellulose ether wastewater to be treated; and an outlet 103 located at the bottom of the tank chamber 101 for discharging the sediment formed after fermentation and sedimentation; wherein, the inlet 102 is located in the middle, and compared with the inlet 102 set at the upper part of the prior art, a flocculant is injected into the sewage while discharging the sewage, and the flocculant is fully mixed under the action of the flowing sewage, and the stirring equipment of the ordinary flocculation sedimentation tank is eliminated, and the flocculation effect of the flocculant can also be guaranteed. Under the impact action, the tank chamber 101 is divided into a clean water layer, a sedimentation layer and a turbulent layer, the turbulent layer is stirred under the action of the sewage entering from the inlet 102, and the sedimentation layer is slowly settled, and the heavy objects in the clean water layer can enter the sedimentation layer through the turbulent layer, and the flocculants are accumulated under the action of gravity.

[0044] A rotating part 2 is installed at the bottom of the pool cavity 101 of the sedimentation tank 1. The rotating part 2 can rotate independently and has a cavity 202 structure inside. A feed port 201 is provided on the cavity 202. The feed port 201 is designed at the front end of the rotating part 2 in the rotation direction so that the sediment can enter the cavity 202 during the rotation process; a shoveling part 204 is also specially provided on the rotating part 2. The shoveling part 204 is close to the bottom of the pool cavity 101 and keeps in contact with it, so as to push and shovel the sediment on the bottom of the pool forward, making it convenient for the feed port 201 to collect it. In the cavity 202 of the rotating member 2, there is also a moving member 3 that can move radially along the rotating member 2. The moving member 3 can move forward and backward in the cavity 202 to facilitate the pushing and collection of sediments inside the cavity 202. A scraper member 4 is installed on the moving member 3. As the moving member 3 moves, the scraper member 4 can not only help the shoveling part 204 to further improve the collection efficiency of sediments, but also scrape the inner wall of the cavity 202 to prevent material adhesion and accumulation, ensure the cleanliness of the cavity 202, and improve the wastewater treatment efficiency and equipment service life. With the rotation of the rotating member 2 and the reciprocating movement of the moving member 3, the sediments at the bottom of the pool are continuously collected into the cavity 202 and discharged to the outlet 103 at the bottom of the pool cavity 101 through the discharge port 203, so as to realize the continuous and efficient operation of the wastewater treatment pool.

[0045] Furthermore, the upper end of the scraper member 4 is swingably set on the moving member 3, and the lower end abuts against the bottom of the cavity 202; the scraper member 4 swings axially perpendicular to the moving direction of the moving member 3, and the scraper member 4 is located on the side of the moving member 3 close to the outlet 103; the moving member 3 has a blocking portion 301, and the blocking portion 301 is located on the side of the scraper member 4 away from the outlet 103, so that when the scraper member 4 moves toward the outlet 103, the scraper member 4 is blocked by the blocking portion 301 and the lower end abuts against the bottom of the cavity 202; when it moves away from the outlet 103, the scraper member 4 swings and cancels the abutment with the bottom of the cavity 202.

[0046] In this embodiment, the scraper member 4 is arranged on the moving member 3 through a swinging mechanism, so that the scraper member 4 can swing relative to the moving member 3 in an axial direction perpendicular to the moving direction; when the moving member 3 drives the scraper member 4 to move toward the outlet 103, the lower end of the scraper member 4 will be in close contact with the bottom of the cavity 202, thereby scraping off the sediment. At this time, a stopper 301 is designed on the moving member 3, and the stopper 301 is located on the side of the scraper member 4 away from the outlet 103. When the scraper reaches the limit position, the stopper 301 will prevent the scraper member 4 from continuing to swing outward, thereby ensuring that the lower end of the scraper is always in contact with the bottom of the cavity. When the moving part 3 drives the scraper part 4 to move away from the outlet 103, it will break away from the contact state with the bottom of the cavity 202 and start to swing upward, avoiding interference with the sediment at the bottom of the cavity or hindering the normal movement of the moving part 3 during the movement, and preventing the scraper from scraping the sediment at the bottom. The scraper part 4 can flexibly adjust its contact state with the bottom of the cavity according to the moving direction of the moving part 3, and can effectively scrape off the sediment when it is close to the outlet 103 side, and can separate from the bottom of the cavity when leaving the sediment area, ensuring efficient cleaning and continuous operation of the wastewater treatment tank during operation.

[0047] Furthermore, the cavity bottom of the cavity 202 has a plurality of scraping grooves 205 , and the length direction of the scraping grooves 205 is parallel to the moving direction of the moving member 3 ; the lower end of the scraper member 4 has a plurality of scraping portions 401 , and the scraping portions 401 are slidably arranged in the scraping grooves 205 .

[0048] In this embodiment, a plurality of scraping grooves 205 are designed at the bottom of the cavity 202, and the extension direction of these scraping grooves 205 is parallel to the moving direction of the moving member 3. This design is to better cooperate with the work of the scraper member 4 and improve the efficiency of cleaning the sediment. The lower end of the scraper member 4 is correspondingly configured with a plurality of scraping parts 401, and these scraping parts 401 can slide in the scraping groove 205 as needed. When the moving member 3 drives the scraper member 4 to move in the cavity 202, the scraping part 401 will slide along the direction of the scraping groove 205, penetrate into the scraping groove 205, scrape up the cellulose ether waste residue deposited on the bottom of the cavity, and push it to the feed port 201 of the rotating member 2 as the moving member 3 moves, and further enter the processing flow. This structural design not only strengthens the cleaning of sediments at the bottom of the cavity 202 and reduces waste residue residue, but also makes it difficult for flocculants to escape from the cavity 202 to the outside through the groove structure, and ensures the continuity and efficiency of the wastewater treatment process, improves the collection effect of flocculants, and effectively improves the comprehensive performance and service life of the cellulose ether wastewater treatment pool.

[0049] Furthermore, the rotating member 2 also has a guide groove 206, the direction of the guide groove 206 is parallel to the moving direction of the moving member 3, the moving member 3 has a first guide portion 302 and a second guide portion 303, the first guide portion 302 is slidably arranged in the guide groove 206, and also includes a drive shaft 5, the drive shaft 5 is rotatably arranged on the rotating member 2, and the axial direction is parallel to the moving direction of the moving member 3, the drive shaft 5 has a reciprocating groove 501, the second guide portion 303 is slidably arranged in the reciprocating groove 501, the driving wheel 6 is arranged on the driving shaft 5, and is located on the side of the rotating member 2 away from the outlet 103, and contacts with the bottom of the pool cavity 101.

[0050] In this embodiment, in addition to the cavity 202 and the shovel portion 204, the rotating member 2 is also designed with a guide groove 206, and the direction of the guide groove 206 is parallel to the moving direction of the moving member 3. The moving member 3 is provided with a first guide portion 302 adapted to the guide groove 206 at its upper portion, and the first guide portion 302 slides in the guide groove 206, thereby ensuring that the moving member 3 can move along a preset track when following the rotation of the rotating member 2, and maintain a stable and accurate moving trajectory. In addition, a drive shaft 5 is also rotatably provided on the rotating member 2, and the axial direction of the drive shaft 5 is kept parallel to the moving direction of the moving member 3. A reciprocating groove 501 is provided on the drive shaft 5, and a second guide portion 303 cooperating therewith is provided at the lower portion of the moving member 3, and the second guide portion 303 slides in the reciprocating groove 501, thereby realizing the reciprocating motion of the moving member 3 in the axial direction. In order to drive the moving member 3 to slide in the reciprocating groove 501, a driving wheel 6 is further provided on the driving shaft 5. The driving wheel 6 is fixed on the driving shaft 5 and is located on the side of the rotating member 2 away from the outlet 103, and contacts the bottom of the pool chamber 101. When the driving wheel 6 rotates with the rotating member 2, the friction force with the pool bottom drives the driving shaft 5 to rotate, and then pushes the moving member 3 to reciprocate linearly through the reciprocating groove 501, thereby achieving efficient scraping and cleaning of the sediment in the cavity 202.

[0051] Furthermore, one end of the shoveling portion 204 close to the discharge port 203 has a closing portion 207, and the closing portion 207 has a material blocking plate 208. After the scraper moves, it abuts against or cancels the abutment with the material blocking plate 208. The cavity wall of the cavity 202 and the material blocking plate 208 are both mesh structures.

[0052] In this embodiment, the design of the baffle plate 208 can reduce the diffusion of flocculants when the pusher pushes the material to the discharge port 203, thereby ensuring the sludge treatment effect at the bottom of the tank chamber 101, and the design of the closing portion 207 can prevent sediment from accumulating on the outer wall of the baffle plate 208. The cavity wall of the cavity 202 with a mesh structure and the baffle plate 208 can prevent the bottom sediment from being lifted up when the rotating member 2 rotates, thereby ensuring the sludge treatment effect, and at the same time ensuring that the sediment can smoothly enter the trough, thereby improving the sludge treatment effect.

[0053] Furthermore, an overflow tank 7 is included, which is arranged around the sedimentation tank 1 and is used to collect liquid flowing out of the overflow port 104. The first evaporation tank 8, the second evaporation tank 9, the third evaporation tank 10, the fourth evaporation tank 11, the fifth evaporation tank 12, and the sixth evaporation tank 13 are all provided with a steam outlet 14, a condensation port 15, and a collection port 16.

[0054] The condenser 17, the first evaporator 8, the second evaporator 9, the third evaporator 10, the fourth evaporator 11, the fifth evaporator 12, and the sixth evaporator 13 are connected through the condenser 17, one end of the condenser 17 is connected to the steam outlet 14, and the other end is connected to the condensation port 15, a semipermeable membrane is set at the steam outlet 14, each collecting port 16 is connected to a collecting tank 18, and the steam outlet 14 of the sixth evaporator 13 is connected to the collecting tank 18.

[0055] In this embodiment, an overflow tank 7 is designed: the overflow tank 7 is arranged around the sedimentation tank 1, and its function is to collect the relatively clear liquid flowing out from the overflow port 104 after preliminary treatment in the sedimentation tank 1, so as to facilitate subsequent further treatment or discharge. Evaporation tank: six evaporation tanks connected in series are designed, namely the first evaporation tank 8 to the sixth evaporation tank 13. Each evaporation tank has a steam outlet 14, a condensation port 15 and a collection port 16. The steam outlet 14 is used to discharge the steam generated by evaporation, the condensation port 15 is used to receive the liquid condensed by the steam evaporated by the previous evaporation tank, and the collection port 16 is used to collect the liquid concentrated by evaporation. The condensation port 15 of the first evaporation tank 8 is connected to the overflow tank 7 to receive the liquid flowing out of the condensation tank;

[0056] The first evaporation tank 8 to the sixth evaporation tank 13 are connected in series in sequence through the condenser 17, and the steam outlet 14 of each stage of the evaporation tank is connected to the condensation port 15 of the next stage of the evaporation tank through the condenser 17 to form a continuous condensation loop, thereby realizing the step-by-step condensation and recovery of steam. The temperature of the first evaporation tank 8 to the sixth evaporation tank 13 is gradually reduced, so as to facilitate the mutual purification and separation of the main organic substances propionic acid, pentanone, butanol, formic acid, propanol, ethanol and methanol contained in the wastewater generated by the production of cellulose ether. When the types of organic substances to be recovered in the wastewater decrease or increase, the number of evaporation tanks can be increased or decreased accordingly.

[0057] Semipermeable membrane installation: A semipermeable membrane is installed at the steam outlet 14 of each evaporation tank. The semipermeable membrane is used to intercept solutes with larger molecular weights, thereby improving evaporation efficiency and resource recovery purity. Collection tank 18: The collection port 16 of each evaporation tank is connected to an independent collection tank 18 to collect the residue or solution after evaporation and concentration. In particular, after the steam outlet 14 of the sixth evaporation tank 13 is treated by a semipermeable membrane, the pure steam can directly enter the last collection tank 18 for condensation and recovery, thereby achieving efficient utilization of resources. Through the above structural design, the cellulose ether wastewater treatment system realizes multi-level treatment of wastewater and gradual extraction and recovery of effective components, thereby improving the overall efficiency of wastewater treatment and resource recovery rate.

[0058] Furthermore, it also includes cooling pipes 19 , which are multiple and are wound around the condensing pipe 17 in sequence.

[0059] In this embodiment, a plurality of cooling tubes 19 are arranged on the condenser tube 17, and these cooling tubes 19 are wound around the outer periphery of the condenser tube 17 in a certain order and density. When the steam generated in the evaporator passes through the condenser tube 17, the cooling tubes 19 wound on the condenser tube 17 will be circulated and cooled by cold water or other cooling medium to quickly absorb and take away the heat in the steam, so as to cause the steam to condense into liquid quickly during the flow process. This design helps to greatly increase the condensation rate and condensation amount, reduce energy consumption, and ensure that the steam in the evaporator can be fully recycled, thereby improving the energy utilization rate.

[0060] Furthermore, the first evaporation tank 8 , the second evaporation tank 9 , the third evaporation tank 10 , the fourth evaporation tank 11 , and the fifth evaporation tank 12 all have a heating layer, and the sixth evaporation tank 13 has a hydrothermal layer, and the cooling pipe 19 leads to the hydrothermal layer.

[0061] In this embodiment, the first to fifth evaporation tanks 12 are all designed with a heating layer, which is mainly used to heat the wastewater flowing into each evaporation tank to accelerate the evaporation of water in the wastewater, achieve the concentration of the wastewater and the separation of effective components. The sixth evaporation tank 13 is specially designed to have a hydrothermal layer. The hydrothermal layer is a structure that uses high-temperature hot water for indirect heating. Compared with the traditional heating layer, it can provide a gentler and more uniform heat distribution, which is conducive to more delicate treatment of wastewater. The cooling pipe 19 leads to the hydrothermal layer of the sixth evaporation tank 13 to introduce the steam generated by the first few evaporation tanks and the cooling water of the cooling pipe 19 into the hydrothermal layer. On the one hand, it provides the hydrothermal layer with the cold source required for heat exchange, and on the other hand, it realizes the rational use and recovery of energy, reducing the energy consumption of the entire wastewater treatment process.

[0062] Furthermore, it also includes a feed pipe 20 , which is connected to the inlet 102 , and a dosing pipe 21 , which is connected to the feed pipe 20 .

[0063] In this embodiment, a feed pipe 20 is designed to deliver the wastewater to be treated to the inlet 102, and a dosing pipe 21 is designed to supply flocculant into the feed pipe 20 to ensure that the wastewater entering the tank cavity 101 has a certain content of flocculant, so that it is more evenly dispersed under the action of impact force when entering the tank cavity 101, so as to ensure the flocculation effect of the wastewater.

[0064] This embodiment also provides a cellulose ether wastewater treatment process, using a cellulose ether wastewater treatment tank.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cellulose ether wastewater treatment pool, characterized in that: include A sedimentation tank (1), the sedimentation tank (1) comprising a tank cavity (101), the tank cavity (101) comprising an inlet (102), an outlet (103) and an overflow port (104), the overflow port (104) being located at the top of the tank cavity (101), the inlet (102) being located in the middle of the tank cavity (101), the inlet (102) injecting a flocculant into the sewage while discharging sewage, the outlet (103) being located at the bottom of the tank cavity (101), A rotating member (2), the rotating member (2) being rotatably arranged at the bottom of the pool cavity (101), the rotating member (2) having a cavity (202), the cavity (202) having a feed port (201) and a discharge port (203), the feed port (201) being located at the front part of the rotating member (2), the rotating member (2) further having a shoveling portion (204), the shoveling portion (204) being located in front of the feed port (201) and abutting against the bottom of the pool cavity (101), the discharge port (203) being connected to the outlet (103), A moving member (3), the moving member (3) being movably disposed in the cavity (202), and the moving direction being along the radial direction of the rotating member (2), a scraper member (4), wherein the scraper member (4) is arranged on the moving member (3), The upper end of the scraper member (4) is swingably arranged on the moving member (3), and the lower end is in contact with the bottom of the cavity (202); the scraper member (4) swings axially perpendicular to the moving direction of the moving member (3), and the scraper member (4) is located on a side of the moving member (3) close to the outlet (103); the moving member (3) has a stopper (301), and the stopper (301) is located on a side of the scraper member (4) away from the outlet (103), so that when the scraper member (4) moves towards the outlet (103), the scraper member (4) is blocked by the stopper (301) and the lower end is in contact with the bottom of the cavity (202); when the scraper member (4) moves away from the outlet (103), the scraper member (4) swings and stops contacting with the bottom of the cavity (202). The cavity bottom of the cavity (202) is provided with a plurality of scraping grooves (205), the length direction of the scraping grooves (205) being parallel to the moving direction of the moving member (3); the lower end of the scraper member (4) is provided with a plurality of scraping portions (401), the scraping portions (401) being slidably arranged in the scraping grooves (205).

2. A cellulose ether wastewater treatment pool according to claim 1, characterized in that: The rotating member (2) further comprises a guide groove (206), the direction of the guide groove (206) being parallel to the moving direction of the moving member (3), the moving member (3) comprising a first guide portion (302) and a second guide portion (303), the first guide portion (302) being slidably disposed in the guide groove (206), and further comprising a drive shaft (5), the drive shaft (5) being rotatably disposed on the rotating member (2) and having an axial direction parallel to a moving direction of the moving member (3), the drive shaft (5) having a reciprocating groove (501), the second guide portion (303) being slidably disposed in the reciprocating groove (501), A driving wheel (6), the driving wheel (6) being arranged on the driving shaft (5) and being located on a side of the rotating member (2) away from the outlet (103) and in contact with the pool bottom of the pool cavity (101).

3. A cellulose ether wastewater treatment pool according to claim 1, characterized in that: One end of the shoveling portion (204) close to the discharge port (203) has a closing portion (207), and the closing portion (207) has a material baffle plate (208). After the scraper moves, it abuts against or cancels the abutment with the material baffle plate (208), and the cavity wall of the cavity (202) and the material baffle plate (208) are both mesh structures.

4. A cellulose ether wastewater treatment pool according to claim 1, characterized in that: Also includes An overflow pool (7), the overflow pool (7) being arranged around the sedimentation tank (1) and being used to collect liquid flowing out of the overflow port (104), The first evaporation tank (8), the second evaporation tank (9), the third evaporation tank (10), the fourth evaporation tank (11), the fifth evaporation tank (12), and the sixth evaporation tank (13) each have a steam outlet (14), a condensation outlet (15), and a collection outlet (16). a condenser (17), wherein the first evaporator (8), the second evaporator (9), the third evaporator (10), the fourth evaporator (11), the fifth evaporator (12), and the sixth evaporator (13) are connected via the condenser (17), one end of the condenser (17) is connected to the steam outlet (14), and the other end is connected to the condensation port (15), a semipermeable membrane, wherein the semipermeable membrane is arranged at the steam outlet (14), A collecting tank (18), each of the collecting ports (16) is in communication with a collecting tank (18), and the steam outlet (14) of the sixth evaporation tank (13) is in communication with the collecting tank (18).

5. A cellulose ether wastewater treatment pool according to claim 4, characterized in that: Also includes A cooling pipe (19), wherein the cooling pipes (19) are multiple and are wound around the condenser pipe (17) in sequence.

6. A cellulose ether wastewater treatment pool according to claim 5, characterized in that: The first evaporation tank (8), the second evaporation tank (9), the third evaporation tank (10), the fourth evaporation tank (11), and the fifth evaporation tank (12) all have a heating layer, the sixth evaporation tank (13) has a hydrothermal layer, and the cooling pipe (19) leads to the hydrothermal layer.

7. A cellulose ether wastewater treatment pool according to claim 1, characterized in that: Also includes a feed pipe (20), the feed pipe (20) being in communication with the inlet (102), A drug adding pipe (21), wherein the drug adding pipe (21) is in communication with the feed pipe (20).

8. A process for treating cellulose ether wastewater, characterized in that: Use the cellulose ether wastewater treatment pool according to any one of claims 1 to 7.

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