Cooperative treatment system for industrial organic wastewater

Abstract

The invention discloses a cooperative treatment system for industrial organic wastewater, belongs to the technical field of industrial wastewater treatment, is based on a treatment means of cooperative cooperation of physical flocculation filtration and biological anaerobic treatment, realizes high-efficiency treatment of wastewater, and mainly aims at a biological anaerobic treatment link, a flow guide assembly and an inclined blade stirring paddle which are distributed up and down are additionally arranged on a suspended sludge layer; on one hand, ascending sludge and settling sludge are separated by partitions, and on the other hand, radial thrust is generated by the inclined blade stirring paddle along with speed-up operation of the water distributor and the inclination angle of the blades, so that middle wastewater and the sludge flow upwards from the center of the reactor to the side, water flow is pushed to move transversely, and the contact time of the wastewater and sludge particles is prolonged; meanwhile, settled sludge falls on the rotating inclined-blade stirring paddle, rotates and diffuses towards the periphery and acts on rising wastewater, so that convection of the sludge and the wastewater is promoted, liquid-phase shearing force is enhanced, mass transfer of the wastewater and microorganisms is promoted, and the device is suitable for treating high-concentration or degradation-resistant organic wastewater.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial wastewater treatment, and more particularly to a coordinated treatment system for industrial organic wastewater. Background Art

[0002] Industrial wastewater refers to wastewater and waste liquid generated in the industrial production process, which contains industrial production materials, intermediate products, by-products and pollutants generated in the production process that are lost with water. In particular, high-concentration organic wastewater (such as pharmaceutical and chemical wastewater) requires pretreatment (mainly through physical and chemical methods to remove suspended matter, adjust water quality, and create conditions for subsequent treatment) and core treatment (mainly through biological and chemical removal of difficult-to-remove organic pollutants in wastewater).

[0003] A search revealed that patent publication number CN109052864A discloses a process for treating high-concentration organic wastewater. This process utilizes UASB reactors to treat wastewater. In the UASB anaerobic tank, wastewater treatment primarily relies on the decomposition of organic matter by anaerobic microorganisms contained in the sludge. During operation, the sludge at the bottom moves upward with the wastewater into a three-phase separator. After three-phase separation, the sludge falls back to the bottom for subsequent reactions.

[0004] That is, by adding guide plates and baffles to divert the rising path of wastewater, separate the rising sludge from the settling sludge, and aim to reduce sludge loss. Although the simple diversion structure can separate the sludge, the convection between the settling sludge and the rising wastewater is insufficient, and the contact between the wastewater and the anaerobic granular sludge is not fully promoted, resulting in limited reaction efficiency (insufficient improvement in COD removal rate).

[0005] To this end, a coordinated treatment system for industrial organic wastewater is proposed. Summary of the Invention

[0006] The purpose of the present invention is to solve the existing problems and provide an industrial organic wastewater collaborative treatment system compared with the existing technology.

[0007] The object of the present invention can be achieved by the following technical solution: an industrial organic wastewater coordinated treatment system, comprising a pretreatment tank and an anaerobic reactor, wherein a drive plate installed in a horizontal reciprocating direction is provided in the pretreatment tank, and an adjustable stirring filter fan is installed at the lower end of the drive plate to rotate relative to the end wall;

[0008] The adjustable stirring filter fan includes a magnetic rotating shaft and a fixed net fixedly mounted thereon. The magnetic rotating shaft is rotatably mounted with movable nets 1 and 2 arranged in a triangular pattern opposite to the fixed net. A filter port is provided at the bottom end of one side of the pretreatment tank. The outside of the filter port is connected to the bottom of the anaerobic reactor through a liquid inlet pipe.

[0009] The interior of the anaerobic reactor is divided into a sludge bed, a suspended sludge layer, and a three-phase separation layer from bottom to top. A water distributor connected to the liquid inlet pipe is rotatably installed at the bottom of the sludge bed. An outwardly extending inclined plate is fixed to the bottom of the suspended sludge layer. An inclined blade stirring paddle movably connected to the axis of the water distributor is rotatably installed at the bottom of the inclined plate. The inclined blade stirring paddle and the water distributor are synchronously rotated and driven by a branch transmission mechanism. A guide assembly adjacent to the bottom of the three-phase separation layer is provided above the inclined blade stirring paddle, and a three-phase separator is installed at the three-phase separation layer.

[0010] Among them, the guide assembly includes multiple guide plates distributed on the front and rear sides of the suspended sludge layer and arranged upward and outward, and a pair of guide plates located in the middle are respectively fixed with a settling plate 1 and a settling plate 2 arranged downward and inclined toward the middle.

[0011] Furthermore, horizontal linear guide rails for horizontally driving the drive plate are fixedly installed on both the front and rear sides of the upper end of the pretreatment tank. The drive plate is a frame-shaped structure with an open lower end. A linkage mechanism for rotationally driving the magnetic rotating shaft is installed on the drive plate.

[0012] Furthermore, an electromagnetic column is embedded and installed inside the magnetic rotating shaft, a rotating groove is opened on the magnetic rotating shaft, a pair of ring sleeves 1 are fixed on the movable net 1 and are slidably connected to the two ends of the rotating groove, and a pair of ring sleeves 2 are fixed on the movable net 2 and are slidably connected to the middle of the rotating groove, and the ring sleeves 1 and 2 are both made of magnetic materials.

[0013] Furthermore, the fixed net and the movable net 1 and movable net 2 are respectively provided with staggered filter hole structures.

[0014] Furthermore, a transition box with a liquid inlet pipe installed is provided outside the filter port, and a sealing plate is inserted into the transition box and installed against the filter port. After the overlapping adjustable stirring filter fan approaches one side of the transition box, the sealing plate is opened upward. At this time, the flocculated wastewater in the pretreatment tank is filtered through the new filter surface, and the pretreated wastewater is introduced into the water distributor of the anaerobic reactor through the liquid inlet pipe.

[0015] Furthermore, the inclined blade agitator includes a connecting shaft rotatably mounted on an inclined plate, a plurality of inclined stirring blades are annularly distributed on the connecting shaft, and the bottom end of the connecting shaft is connected and rotated with the axis position of the water distributor through a linkage shaft.

[0016] Furthermore, a sludge upflow space is provided between two adjacent guide plates and between the guide plates and the circumferential edge of the anaerobic reactor. The bottom end of the first settling plate extends to the upper end surface of the inclined plate, and a sludge return gap is reserved between the bottoms of the first settling plate and the second settling plate.

[0017] Furthermore, the settling plate 1 and the settling plate 2 are respectively fixed at the middle position of the inner side of the middle pair of guide plates, and the middle pair of guide plates are provided with flow openings respectively located below the settling plate 1 and the settling plate 2, providing a rising path for the wastewater.

[0018] Furthermore, a biofilm carrier is provided on the top of the guide plate and is located above the sludge upflow space.

[0019] Furthermore, the three-phase separator is provided with rising spaces on both sides connected to the upper ends of a pair of biofilm carriers, the inside of the three-phase separator is provided with sludge sedimentation areas connected to the rising spaces on both sides, the bottom of the three-phase separator is provided with multiple groups of sludge sedimentation baffles connected to the sludge sedimentation areas, and a pair of biofilm carriers are respectively located on the outside of the two ends of the sludge sedimentation baffles.

[0020] Furthermore, an air chamber and an effluent collection area with gas-liquid separation function and distributed up and down are provided above the sludge settling area. The top of the anaerobic reactor is externally connected to an exhaust pipe connected to the air chamber of the three-phase separator. The exhaust pipe is externally connected to a return pipe and an external discharge pipe. The other end of the return pipe is connected to the liquid inlet pipe. One end of the three-phase separator is externally connected to a drainage pipe connected to the effluent collection area.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] This solution is a treatment method that cooperates with physical flocculation filtration and biological anaerobic treatment to achieve efficient wastewater treatment. It mainly focuses on the biological anaerobic treatment link. It adds upper and lower distributed diversion components and inclined blade stirring paddles at the suspended sludge layer. On the one hand, it uses partitioning to separate the rising sludge and the settling sludge, and realizes the barrier-free sludge backflow. On the other hand, the inclined blade stirring paddle is accelerated synchronously with the water distributor. The inclination angle of the blade generates radial thrust, which is used to move the middle wastewater and sludge upward from the center of the anaerobic reactor to the side, promote the lateral movement of the water flow, and extend the contact time between the wastewater and the sludge. At the same time, the settled sludge falls on the rotating inclined blade stirring paddle, rotates and diffuses toward the upper periphery and directly acts on the rising wastewater. Its purpose is to promote convection between the settled sludge and the wastewater, enhance the liquid phase shear force, and promote the mass transfer between the wastewater and the microorganisms.

[0023] Based on the above content, the structure of the guide assembly is optimized and improved. Based on multiple guide plates symmetrically arranged on both sides and inclined upward toward the edge, a sludge upstream space is formed between two adjacent guide plates and between the guide plates and the inner wall of the circumference of the anaerobic reactor. A settling plate 1 and a settling plate 2 that are relatively inclined downward are respectively arranged on a pair of guide plates in the middle to form a sludge return gap separated from the sludge upstream space partition, and accompanied by inclined blade push flow stirring, the wastewater turbulence and shear force are enhanced, and the sludge obtained by sedimentation is avoided to have obvious agglomeration and caking. The sludge is relatively loose as a whole, which is conducive to the anaerobic sludge to obtain and maintain good sedimentation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the external structure of the present invention;

[0025] Figure 2 It is an overall cross-sectional view of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the pretreatment tank of the present invention;

[0027] Figure 4 is a cross-sectional view of a pretreatment tank of the present invention;

[0028] Figure 5 Schematic diagram of the structure of the adjustable stirring filter fan of the present invention;

[0029] Figure 6 This is a disassembled diagram of the adjustable stirring filter fan of the present invention;

[0030] Figure 7 This is a schematic structural diagram of the present invention when the overlapping adjustable stirring filter fans are moved;

[0031] Figure 8 This is a schematic structural diagram of the present invention when using overlapping adjustable stirring filter fans to filter wastewater;

[0032] Figure 9 is a cross-sectional view of an anaerobic reactor of the present invention;

[0033] Figure 10 is a cross-sectional view of the anaerobic reactor of the present invention when in operation;

[0034] Figure 11 This is a cross-sectional view of the anaerobic reactor of the present invention when in operation.

[0035] Description of the numbers in the figure:

[0036] 1. Pretreatment tank; 2. Anaerobic reactor; 3. Horizontal linear guide rail; 4. Drive plate; 5. Adjustable stirring filter fan; 51. Magnetic rotating shaft; 511. Rotating trough; 52. Fixed net; 53. Movable net 1; 531. Ring sleeve 1; 54. Movable net 2; 541. Ring sleeve 2; 6. Transition box; 7. Liquid inlet pipe; 8. Water distributor; 9. Linkage shaft; 10. Paddle stirring paddle; 11. Inclined plate; 12. Sludge diversion assembly; 121. Diversion plate; 122. Sedimentation plate 1; 123. Sedimentation plate 2; 13. Biofilm carrier; 14. Three-phase separator; 15. Exhaust pipe; 151. Return pipe; 152. External discharge pipe; 16. Drain pipe. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work shall fall within the scope of protection of the present invention.

[0038] Example 1: Traditional UASB reaction equipment only uses a simple guide plate structure to separate rising sludge from settling sludge. However, the convection between the settling sludge and the rising wastewater is still insufficient, making it difficult to promote sufficient contact between the wastewater and the anaerobic granular sludge, resulting in limited reaction efficiency. The following solution is proposed to improve the traditional UASB reaction equipment and combine it with a pretreatment tank to pretreat the organic wastewater to enhance the deep treatment effect of the organic wastewater:

[0039] The present invention discloses a system for co-processing industrial organic wastewater. Figure 1 、 Figure 2 , including a pretreatment tank 1 and an anaerobic reactor 2 arranged on the left and right. The pretreatment tank 1 is used to perform physical flocculation and filtration pretreatment operations on industrial organic wastewater to remove suspended matter and impurities in the wastewater. The wastewater obtained after pretreatment is then passed into the anaerobic reactor 2 for biological anaerobic treatment to remove organic matter that is difficult to remove in the wastewater.

[0040] See also Figure 3-Figure 6 A driving plate 4 is provided in the pretreatment tank 1 and is reciprocally driven in the horizontal direction. An adjustable stirring filter fan 5 is rotatably installed at the lower end of the driving plate 4 relative to the end wall. The adjustable stirring filter fan 5 includes a magnetic rotation shaft 51, a fixed net 52 fixedly installed on the magnetic rotation shaft 51, and a movable net 1 53 and a movable net 2 54 arranged in a triangular arrangement opposite to the fixed net 52.

[0041] A filter port is provided at the bottom of the pretreatment tank 1 near the anaerobic reactor 2. A transition box 6 is provided outside the filter port. The transition box 6 is externally connected to a liquid inlet pipe 7 connected to the bottom of the anaerobic reactor 2. Horizontal linear guide rails 3 for horizontally driving a drive plate 4 are fixedly installed on both the front and rear sides of the upper end of the pretreatment tank 1. The drive plate 4 is a frame-shaped structure with an open lower end. A linkage mechanism for rotationally driving a magnetic rotation shaft 51 is installed on the drive plate 4.

[0042] The linkage mechanism includes a drive motor installed on one side of the upper end of the drive plate 4 and a linkage structure linked with the drive motor and the magnetic rotating shaft 51. The linkage structure can adopt an existing transmission chain structure to realize the rotational drive of the adjustable stirring filter fan 5.

[0043] An electromagnetic column is embedded in the magnetic rotating shaft 51. A rotating groove 511 is formed on the magnetic rotating shaft 51. A pair of ring sleeves 531 are fixed to the movable net 1 53 and are slidably connected to the ends of the rotating groove 511. A second ring sleeve 541 is fixed to the movable net 2 54 and is slidably connected to the middle of the rotating groove 511. Both the ring sleeves 531 and 541 are made of magnetic material.

[0044] The fixed net 52 and the movable net 1 53 and movable net 2 54 are respectively provided with staggered filter hole structures. When the adjustable stirring filter fan 5 acts as a stirring structure, the movable net 1 53 and movable net 2 54 are respectively rotated upward toward the side away from the fixed net 52 so that the three are distributed in a triangle. The electromagnetic column in the magnetic rotation shaft 51 is started to make it a fixed structure, so as to form a stirring fan with larger filter holes on three sides. After adding flocculants or other additives, the organic wastewater in the pretreatment tank 1 is mixed and stirred by horizontal reciprocating motion combined with 5 circular rotation motions.

[0045] When the mixing is complete, refer to Figure 7 、 Figure 8 , move the adjustable stirring filter fan 5 toward the side of the transition box 6, disconnect the electromagnetic column, and the movable net 53 and the movable net 53 rotate downward under the action of gravity and overlap with the left and right sides of the fixed net 52 to form a new multi-layer structure filter surface to narrow the filter gap;

[0046] Start the electromagnetic column so that the magnetic rotating shaft 51, the fixed net 52, and the movable net 53 form an integral structure of a multi-layer filtering surface, and then rotate the adjustable stirring filter fan 5 clockwise so that the adjustable stirring filter fan 5 moves toward the side of the transition box 6. During the process, the adjustable stirring filter fan 5 moves the water body toward the side away from the transition box 6 until the overlapping adjustable stirring filter fans 5 are perpendicular to the pretreatment tank 1 and close to the side of the transition box 6. After the adjustable stirring filter fans 5 overlap, rotate them clockwise for another circle to avoid direct horizontal movement, which will block impurities in the water body on the side of the transition box 6.

[0047] A sealing plate 601 is inserted into the transition box 6 and installed against the filter port. When the overlapping adjustable stirring filter fan 5 approaches one side of the transition box 6, the sealing plate 601 is opened upwards. At this time, the flocculated wastewater in the pretreatment tank 1 is filtered through the new filter surface, and the pretreated wastewater is introduced into the water distributor 8 of the anaerobic reactor 2 through the liquid inlet pipe 7.

[0048] In addition, it should be added that: the adjustable stirring filter fan 5 is set to be adjustable, and the adjustable stirring filter fan 5 acts as both a stirring structure and a filtering structure. On the one hand, it improves the operational flexibility of the device. On the other hand, after the filtration work is completed, the magnetic rotation shaft 51, the fixed net 52, and the movable net 53 are restored to their initial state. Through the rotation operation, each individual filter layer can be conveniently rotated to a horizontal direction, and the wastewater flows through the adsorption surface downward, which is convenient for backwashing operations from top to bottom. Compared with a single fixed dense filter layer, the backwashing efficiency is higher.

[0049] The interior of the anaerobic reactor 2 is divided into a sludge bed, a suspended sludge layer and a three-phase separation layer from bottom to top. A water distributor 8 connected to a liquid inlet pipe 7 is rotatably installed at the bottom of the sludge bed.

[0050] The water inlet end of the water distributor 8 is connected to the end of the liquid inlet pipe 7 through a rotary joint. The water distributor 8 is set to a rotary type. The wastewater obtained by pretreatment is introduced into the water distributor 8 through the liquid inlet pipe 7, and is evenly distributed at the bottom of the sludge bed through the water distributor 8, thereby intensifying the mixing effect between the sludge and wastewater at the bottom of the sludge bed. The rotation speed of the water distributor 8 is relatively low to avoid excessive shearing and destruction of sludge particles.

[0051] A three-phase separator 14 is installed at the three-phase separation layer. An ascending space connected to the upper end of a pair of biofilm carriers 13 is provided on both sides of the three-phase separator 14. A sludge settling area connected to the ascending space on both sides is provided inside the three-phase separator 14. A plurality of sludge settling baffles connected to the sludge settling area are provided at the bottom of the three-phase separator 14.

[0052] Above the sludge settling area, there are air chambers and effluent collection areas with gas-liquid separation functions distributed up and down. The top of the anaerobic reactor 2 is externally connected to an exhaust pipe 15 connected to the air chamber of the three-phase separator 14. The exhaust pipe 15 is externally connected to a return pipe 151 and an external discharge pipe 152. The other end of the return pipe 151 is connected to the liquid inlet pipe 7. One end of the three-phase separator 14 is externally connected to a drainage pipe 16 connected to the effluent collection area.

[0053] The sludge bed, as the bottom high-concentration granular sludge area, is the main place for organic matter degradation. The suspended sludge layer, as the upper low-concentration flocculent sludge area, relies on the rising biogas to form a mixture. The existing UASB reactor is used to utilize sludge microorganisms to react with the bottom phase of organic wastewater. The organic matter is converted into methane and carbon dioxide through the metabolism of anaerobic microorganisms, while pollutants are removed and high-concentration organic wastewater is degraded. The biogas enters the gas chamber and is discharged. The generated biogas is used as recovered energy. The sludge settles due to gravity through the sludge settling baffle and returns to the reaction area composed of the suspended sludge layer and the sludge bed. The overflow of clean water is discharged from the drain pipe 16.

[0054] Example 2: Based on Example 1, this example adds biofilm carriers 13, flow guide components 12, and inclined blade agitators 10 distributed vertically at the suspended sludge layer to enhance the biological treatment effect of the active sludge on the rising wastewater, as follows:

[0055] See also Figures 9-11 A slanted plate 11 extending to the outside of the anaerobic reactor 2 is fixed at the bottom of the suspended sludge layer. An inclined blade stirring paddle 10 movably connected to the axis of the water distributor 8 is rotatably installed at the bottom end of the slanted plate 11. The inclined blade stirring paddle 10 includes a connecting shaft rotatably mounted on the slanted plate 11. A plurality of inclined stirring blades are annularly distributed on the connecting shaft. The bottom end of the connecting shaft is connected and rotated with the axis position of the water distributor 8 through a linkage shaft 9. The inclined blade stirring paddle 10 and the water distributor 8 are synchronously driven at different speeds through a branch transmission mechanism.

[0056] Ensure that the inclination direction of the stirring blade matches the rotation direction. For example, when the pitched-blade stirring paddle 10 rotates counterclockwise, the stirring blade tilts to the left to enhance the radial thrust. The motor power is distributed to the pitched-blade stirring paddle 10 and the water distributor 8 through a branch transmission mechanism. The branch transmission mechanism commonly includes gear transmission, belt transmission or combined transmission. This is an existing technology that uses different transmission ratios to achieve differentiated speeds, so that the water distributor 8 runs at a low speed and the pitched-blade stirring paddle 10 runs at a high speed.

[0057] The pitched blade impeller 10 rotates at high speed, and the blade inclination angle can generate radial thrust, which is used to push the wastewater and sludge in the middle to the edge of the anaerobic reactor 2. A guide component 12 adjacent to the three-phase separation layer is provided above the pitched blade impeller 10. The wastewater and sludge are diverted and ascended through the guide component 12;

[0058] Among them, the guide assembly 12 includes a plurality of guide plates 121 distributed on the front and rear sides of the suspended sludge layer and arranged outward and upward. The plurality of guide plates 121 are distributed from the outside to the inside, and a sludge upflow space is provided between two adjacent guide assemblies 12 and between the guide assembly 12 and the circumferential edge of the anaerobic reactor 2. A settling plate 1 122 and a settling plate 2 123 arranged downward and inclined toward the middle are fixed on the pair of guide plates 121 located in the middle, respectively. The bottom end of the settling plate 122 extends to the upper end surface of the inclined plate 11, and a sludge return gap is reserved between the bottom of the settling plate 122 and the bottom of the settling plate 2 123;

[0059] The first settling plate 122 and the second settling plate 123 are respectively fixed to the middle position of the inner side of the middle pair of guide plates 121, and the middle pair of guide plates 121 are provided with flow openings located below the first settling plate 122 and the second settling plate 123, respectively, to provide a wastewater upward path. The wastewater and the sludge move upward through multiple sludge upflow spaces under the cooperation of the inclined plate 11, the first settling plate 122, and the second settling plate 123;

[0060] On the one hand, it can separate the rising sludge from the settling sludge and realize the barrier-free sedimentation of the return sludge. On the other hand, through the arrangement of multiple guide plates 121, the hydraulic conditions are directionally strengthened, and the wastewater flow is guided to flow from the center of the reactor to the upper side, maintaining moderate turbulence without destroying the granular sludge structure, promoting the lateral movement of the water flow, and extending the contact time between the wastewater and the sludge. At the same time, the return sludge falls on the rotating inclined blade agitator 10 and then rotates and diffuses to the periphery and directly acts on the rising wastewater. Its purpose is to enhance the liquid phase shear force, promote mass transfer between wastewater and microorganisms, and accelerate the reaction rate. It is suitable for high-concentration or difficult-to-degrade organic wastewater such as chemical and pharmaceutical wastewater.

[0061] In addition, a biofilm carrier 13 is provided on the top of the guide plate 121 and is located above the sludge upflow space. The biofilm carrier 13 is specifically a biomass carbon carrier, which increases the attachment area of microorganisms without affecting the rise of wastewater and airflow. It combines the dual effects of biofilm and granular sludge to improve the wastewater treatment effect.

[0062] In summary, the invention is a treatment method based on the coordinated cooperation of physical flocculation filtration and biological anaerobic treatment to achieve efficient wastewater treatment. It mainly targets the biological anaerobic treatment link, and adds upper and lower distributed guide components 12 and inclined blade stirring paddles 10 at the suspended sludge layer. On the one hand, the partition is used to separate the rising sludge and the settling sludge. On the other hand, the inclined blade stirring paddle 10 operates synchronously with the water distributor 8. The inclination angle of the blades can generate radial thrust, which is used to make the middle wastewater and sludge flow upward from the center of the anaerobic reactor 2 to the side, promote the lateral movement of the water flow, and prolong the contact time between the wastewater and the sludge particles. At the same time, the settled sludge falls on the rotating inclined blade stirring paddle 10, and the settled sludge is rotated and diffused by the inclined surface of the inclined blade stirring paddle 10 to the upper periphery, and directly acts on the rising wastewater. The purpose is to promote convection between the settled sludge and the wastewater, enhance the liquid phase shear force, and promote the mass transfer between the wastewater and microorganisms. It is suitable for the treatment of high-concentration or difficult-to-degrade organic wastewater.

[0063] Based on the above content, the structure of the guide assembly 12 is optimized and improved, with multiple guide plates 121 symmetrically arranged on both sides and inclined upward toward the edge. The sludge upstream space is formed between two adjacent guide plates 121 and the guide plate 121 and the inner wall of the circumference of the anaerobic reactor 2, and a relatively downwardly inclined settling plate 1 122 and a settling plate 2 123 are respectively arranged on a pair of guide plates 121 in the middle to form a sludge return gap separated from the sludge upstream space partition. Under the action of the rotating inclined blade agitator 10, the turbulence and shear force of the wastewater are enhanced to avoid the obvious agglomeration of the sludge obtained by sedimentation. The sludge is relatively loose as a whole, which is conducive to the treatment of organic wastewater.

[0064] The above are only preferred specific implementation methods of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved conception of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An industrial organic wastewater coordinated treatment system, comprising a pretreatment tank (1) and an anaerobic reactor (2), characterized in that: The pretreatment tank (1) is provided with a drive plate (4) installed to be reciprocated in a horizontal direction, and an adjustable stirring filter fan (5) is installed at the lower end of the drive plate (4) to rotate relative to the end wall; The adjustable stirring filter fan (5) comprises a magnetic rotating shaft (51) and a fixed net (52) fixedly mounted thereon; a movable net 1 (53) and a movable net 2 (54) are rotatably mounted on the magnetic rotating shaft (51) and are arranged in a triangular opposition to the fixed net (52); a filter port is provided at the bottom end of one side of the pretreatment tank (1); and the outside of the filter port is connected to the bottom of the anaerobic reactor (2) through a liquid inlet pipe (7); The interior of the anaerobic reactor (2) is divided into a sludge bed, a suspended sludge layer, and a three-phase separation layer from bottom to top. A water distributor (8) connected to a liquid inlet pipe (7) is rotatably mounted at the bottom of the sludge bed. An outwardly extending inclined plate (11) is fixed at the bottom of the suspended sludge layer. An inclined blade stirring paddle (10) is rotatably mounted at the bottom end of the inclined plate (11) and is synchronously rotated and driven by the water distributor (8) through a branch transmission mechanism. A flow guide assembly (12) adjacent to the bottom of the three-phase separation layer is provided above the inclined blade stirring paddle (10). A three-phase separator (14) is installed at the three-phase separation layer. The guide assembly (12) includes a plurality of guide plates (121) distributed on the front and rear sides of the suspended sludge layer and arranged to tilt outward and upward, and a pair of guide plates (121) located in the middle are respectively fixed with a settling plate 1 (122) and a settling plate 2 (123) arranged to tilt downward toward the middle.

2. The industrial organic wastewater collaborative treatment system according to claim 1, characterized in that: Horizontal linear guide rails (3) for horizontally driving a drive plate (4) are fixedly installed on both the front and rear sides of the upper end of the pretreatment tank (1); the drive plate (4) is a frame-shaped structure with an open lower end; and a linkage mechanism for rotationally driving a magnetic rotation shaft (51) is installed on the drive plate (4).

3. The industrial organic wastewater collaborative treatment system according to claim 2, characterized in that: An electromagnetic column is embedded and installed inside the magnetic rotation shaft (51), and a rotation groove (511) is opened on the magnetic rotation shaft (51). A pair of ring sleeves (531) are fixed on the movable net (53) and are slidably connected to the two ends of the rotation groove (511). A ring sleeve (541) is fixed on the movable net (54) and is slidably connected to the middle part of the rotation groove (511). The ring sleeves (531) and the ring sleeves (541) are both made of magnetic materials.

4. The industrial organic wastewater collaborative treatment system according to claim 3, characterized in that: The fixed net (52), the movable net 1 (53) and the movable net 2 (54) are respectively provided with staggered filter hole structures.

5. The industrial organic wastewater collaborative treatment system according to claim 1, characterized in that: A transition box (6) for installing a liquid inlet pipe (7) is provided outside the filter port, and a sealing plate (601) is inserted and installed in the transition box (6) to abut against the filter port.

6. The industrial organic wastewater collaborative treatment system according to claim 1, characterized in that: A sludge upflow space is provided between two adjacent guide plates (121) and between the guide plate (121) and the circumferential edge of the anaerobic reactor (2); the bottom end of the first settling plate (122) extends to the upper end surface of the inclined plate (11); and a sludge return gap is reserved between the bottoms of the first settling plate (122) and the second settling plate (123).

7. The industrial organic wastewater collaborative treatment system according to claim 1, characterized in that: A biofilm carrier (13) is provided on the top of the guide plate (121) and is located above the sludge upflow space.

8. The industrial organic wastewater collaborative treatment system according to claim 7, characterized in that: The three-phase separator (14) is provided with rising spaces on both sides thereof which are connected to the upper ends of a pair of biofilm carriers (13); the interior of the three-phase separator (14) is provided with sludge settling areas which are connected to the rising spaces on both sides; the bottom of the three-phase separator (14) is provided with multiple groups of sludge settling baffles which are connected to the sludge settling areas; and the pair of biofilm carriers (13) are respectively located on the outside of both ends of the sludge settling baffles.

9. The industrial organic wastewater collaborative treatment system according to claim 8, characterized in that: An air chamber and an effluent collection area are provided above the sludge settling area. The top of the anaerobic reactor (2) is externally connected to an exhaust pipe (15) that is connected to the air chamber of the three-phase separator (14). The exhaust pipe (15) is externally connected to a return pipe (151) and an external discharge pipe (152). The other end of the return pipe (151) is connected to the liquid inlet pipe (7). One end of the three-phase separator (14) is externally connected to a drainage pipe (16) that is connected to the effluent collection area.

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