IBR integrated sewage treatment process

Abstract

The invention relates to the technical field of sewage treatment, and discloses an IBR integrated sewage treatment process, which comprises the following steps: introducing sewage into a pretreatment tank, removing large-particle floating objects and inorganic large particles in the sewage, introducing the sewage treated in the pretreatment tank into an integrated reaction tank, and keeping continuous water inlet and water outlet, intermittent aeration and stirring are carried out on sewage in the integrated reaction tank, the sewage is alternately and continuously circulated to be subjected to each stage of sewage treatment reaction, and each parameter is adjusted to ensure that supernate in the reaction tank is maintained in a standard reaching state. According to the technology disclosed by the invention, sewage is pretreated and then introduced into the integrated reaction tank for purification, so that continuous water feeding and water discharging can be realized without waiting for reaction time.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an IBR integrated sewage treatment process. Background Art

[0002] IBR (Continuous-flow Intermission Biological Reactor) technology, namely continuous-flow integrated intermittent biological reaction technology, is a cyclic activated sludge process with continuous inflow and outflow of water, integrating anaerobic, facultative aerobic, aerobic reactions and precipitation. This technology is an energy-saving urban sewage biological treatment technology specially developed for the characteristics of low organic matter load and high nitrogen and phosphorus concentrations in urban sewage in my country. After several years of engineering application improvement and development, this technology has become a mature technology suitable for urban sewage treatment.

[0003] The IBR biological treatment process creates a multi-level A / A / O state of sewage in the reaction tank by adjusting the exposure-stop ratio, so that the sewage is in the best denitrification and phosphorus removal condition in the reaction tank to remove nitrogen and phosphorus to the maximum extent. According to the raw sewage water quality, water volume, water temperature, and seasonal changes, the exposure, stirring, and sedimentation cycles of the biological reactor are adjusted to achieve the minimum exposure amount of the biological reactor and the maximum denitrification and phosphorus removal. The purpose of the overall energy saving of the system is an advanced technology for low-energy denitrification and phosphorus removal.

[0004] In the actual sewage treatment process, for sewage with a high phosphorus content (TP>3mg / L) entering the plant, additional reagents (polyaluminum salts, iron salts, etc.) need to be added for phosphorus removal. If a large amount of reagents are added to the integrated reaction pool at one time, the reagent concentration in the integrated reaction pool will be too high, affecting the activity of the sludge in the reaction pool; if the reagents are added in small amounts in multiple times, the equipment occupies a large area, the required amount of reagents is large, and the labor intensity of manual addition is too high, and the labor cost is also high.

[0005] The invention patent with publication number CN112028256B discloses an enzymatic dephosphorization agent that can be directly added to the biological reaction tank without affecting the microorganisms in the sludge. If a large amount of this agent is added at one time, some of the dephosphorization agent will be discharged with the clean water, which will not only affect the effluent index parameters of the clean water, but also increase the amount of agent used and increase operating costs. Therefore, in order to meet the requirements of the IBR biological treatment process, a device that can achieve continuous dosing function is needed. Summary of the invention

[0006] The purpose of the present invention is to provide an IBR integrated sewage treatment process, aiming to solve the problem of inconvenience in treating sewage with high phosphorus content in the existing IBR sewage treatment process.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: An IBR integrated sewage treatment process, characterized in that it comprises the following steps: S1. Pretreatment: The sewage is introduced into the pretreatment tank to remove large floating particles and inorganic large particles in the sewage, and the sewage concentration is adjusted to stabilize the concentration.

[0008] S2. Biological treatment: The treated sewage in the pretreatment tank is introduced into the integrated reaction tank, and the water inlet and outlet are maintained continuously. The reagent is added to the sewage through the dosing device. At the same time, the sewage in the integrated reaction tank is intermittently aerated and stirred. The sewage is alternately cycled through aerobic, anoxic and anaerobic reactions. The intermittent aeration parameters and stirring parameters are adjusted to ensure that the supernatant in the reaction tank remains up to standard. S3. Post-treatment: The effluent from S2 is directly discharged or reused after deep treatment; The dosing device in S2 includes a feeding box, a discharging pipe is provided on the feeding box, a conveying auger is provided in the discharging pipe, a discharging cylinder is provided at one end of the discharging pipe away from the feeding box, a stirring tank is provided below the discharging cylinder, a water inlet pipe is provided on the stirring tank, a water outlet pipe is provided at the bottom of the stirring tank, the bottom of the stirring tank is higher than the top of the pretreatment tank, the water outlet end of the water outlet pipe is located in the pretreatment tank, the conveying auger includes a rotating shaft, a first bevel gear and a driving gear are provided at one end of the rotating shaft close to the stirring tank, the first bevel gear and the driving gear are both coaxial with the rotating shaft, a second bevel gear is meshed with the first bevel gear, the axial direction of the second bevel gear is vertical, a transmission rod is vertically coaxially provided below the second bevel gear, and a plurality of stirring plates are evenly provided at the lower end of the transmission rod; A first driven gear and a second driven gear are arranged on both sides of the driving gear, the first driven gear and the second driven gear are both meshed with the driving gear, the first driven gear is arranged with a first tooth plate, the second driven gear is arranged with a second tooth plate, the first driven gear is coaxial with the first tooth plate, the second driven gear is coaxial with the second tooth plate, a first arcuate tooth belt is arranged on the edge of the first tooth plate, a second arcuate tooth belt is arranged on the edge of the second tooth plate, the first arcuate tooth belt and the second arcuate tooth belt are the same in size, and the curvature is less than or equal to the curvature of the first tooth plate. is equal to π, a movable plate is arranged between the first tooth plate and the second tooth plate, the movable plate is in the shape of a long strip, straight tooth belts are arranged on both sides of the movable plate, the first arc tooth belt and the second arc tooth belt are meshed with the straight tooth belt, a water spraying member is arranged on the movable plate, the water spraying member is connected to the water inlet pipe, the water spraying member is located in the discharge barrel, a movable port is vertically opened on the discharge barrel, sliding grooves are opened on both sides of the movable port, a sliding block matching the sliding groove is arranged on the water spraying member, and the water outlet end of the water spraying member is located in the discharge barrel; When the conveying auger rotates, the first bevel gear rotates synchronously, driving the second bevel gear to rotate, and the second bevel gear drives the transmission rod and the stirring plate to rotate synchronously, so as to perform rotation and stirring in the stirring tank, and the driving gear also rotates synchronously with the conveying auger, driving the first driven gear and the second driven gear to rotate, and the first arc toothed belt and the second arc toothed belt rotate synchronously, driving the movable plate to reciprocate up and down, and the water spraying member repeatedly washes the inner wall of the discharge barrel up and down; The water inlet speed in the pretreatment tank is consistent with the water outlet speed of the integrated reaction tank, and the entire reaction process is in dynamic balance. When the reagent is continuously added into the integrated reaction tank by the dosing device, the water spraying part repeatedly flushes the discharge barrel up and down to prevent the reagent from adhering to the inner wall of the discharge barrel, thereby maintaining the stability of the reagent dosage and ensuring the stability of the entire reaction process.

[0009] Preferably, the average particle size of the large floating particles removed in S1 is above 10 mm, and the average particle size of the inorganic large particles removed is above 2 mm.

[0010] Preferably, the stable regulation of sewage concentration in S1 refers to mixing high-concentration sewage and low-concentration sewage in a regulating tank.

[0011] Preferably, the intermittent aeration parameters in S2 include an aeration volume, an aeration time, and an interval time between two adjacent aerations, and the stirring parameters in S2 include a stirring speed and a continuous stirring time after each aeration.

[0012] Preferably, the deep treatment in S3 includes any one or more of the following treatment processes: adsorption treatment, filtration separation treatment, and advanced oxidation treatment.

[0013] Preferably, the integrated reaction tank in S2 includes a reaction zone and a sedimentation zone, a partition plate is arranged between the reaction zone and the sedimentation zone, a connecting port connecting the reaction zone and the sedimentation zone is opened at the lower part of the partition plate, intermittent aeration and stirring are carried out in the reaction zone, the pretreated sewage in S1 flows into the upper part of the reaction zone, and the effluent overflows from the upper part of the sedimentation zone.

[0014] Preferably, the water inlet end of the water inlet pipe is located in the integrated reaction tank, and a water pump is provided on the water inlet pipe.

[0015] Preferably, the water spraying member includes a water-passing member, a water-passing cavity is provided on the water-passing member, the water inlet pipe is communicated with the water-passing cavity, a water-sprinkling pipe is provided on the water-passing member, the water-sprinkling pipe is rotatably connected with the water-passing member, a plurality of water-sprinkling holes are provided on the water-sprinkling pipe, the water-sprinkling pipe is communicated with the water-passing cavity, a first water-sprinkling gear is rotatably connected to the water-passing member, the axis direction of the first water-sprinkling gear is horizontal, a fixed rack is vertically provided on the inner wall of the discharging barrel, the fixed rack is meshed with the first water-sprinkling gear, a third bevel gear is provided on the first water-sprinkling gear, the third bevel gear is coaxial with the first water-sprinkling gear, a fourth bevel gear is meshed with the third bevel gear, the axis direction of the fourth bevel gear is vertical, a second water-sprinkling gear is coaxially provided on the fourth bevel gear, a third water-sprinkling gear is provided on the outer wall of the water-sprinkling pipe, the third water-sprinkling gear is meshed with the second water-sprinkling gear; The water in the water inlet pipe enters the water passage cavity and is sprayed out from the water sprinkling hole. At this time, the water spraying member reciprocates up and down, and the first water sprinkling gear rotates under the action of the fixed rack, and the third bevel gear also rotates accordingly, thereby driving the fourth bevel gear and the second water sprinkling gear to rotate, and the second water sprinkling gear drives the third water sprinkling gear to rotate, and the water sprinkling pipe also rotates together, and the direction of the water flow sprayed from the water sprinkling hole changes, and the inner wall of the discharge barrel is flushed in all directions.

[0016] Preferably, the water outlet pipe includes a first water outlet portion and a second water outlet portion, the first water outlet portion is in a "U" shape, the second water outlet portion is in an inverted "U" shape, and the top of the second water outlet portion is higher than the bottom of the mixing tank and lower than the top of the mixing tank.

[0017] Preferably, a blocking plate is provided on the movable plate, and the blocking plate covers the movable opening.

[0018] The sewage is introduced into the pretreatment tank, and large floating particles with an average particle size of more than 10mm and inorganic large particles with an average particle size of more than 2mm are removed from the sewage. The sewage concentration is adjusted to stabilize within the specified concentration range, and then the sewage with adjusted concentration is introduced into the integrated reaction tank. When the phosphorus content of the introduced sewage is high, the conveying auger and the water pump are turned on. The conveying auger conveys the agent in the feeding box to the discharge barrel, and the agent falls from the discharge barrel to the mixing tank. The water pump draws the sewage in the integrated reaction tank into the water inlet pipe. The water in the water inlet pipe is sprayed from the water spraying part into the mixing tank to dissolve the agent. At this time, the conveying auger The rotating shaft rotates continuously, driving the first bevel gear and the driving gear to rotate, the first bevel gear drives the second bevel gear and the transmission rod to rotate, the transmission rod drives the stirring plate at the lower end to rotate to stir the medicine and water at the bottom of the stirring tank, and the driving gear drives the first driven gear and the second driven gear to rotate, so that the first arc toothed belt and the second arc toothed belt are alternately engaged with the straight toothed belt, driving the movable plate to reciprocate up and down, and through the cooperation of the sliding block and the sliding groove, the water spraying part also reciprocates up and down to flush and clean the inner wall of the discharge barrel, and the flushing water falls into the stirring tank to dissolve and dilute the medicine.

[0019] The reagent and water flow back to the integrated reaction tank to remove phosphorus from the sewage in the integrated reaction tank. At the same time, the sewage in the integrated reaction tank is intermittently aerated and stirred, and the sewage is alternately circulated to undergo aerobic, anoxic and anaerobic reactions to achieve the effect of removing phosphorus and reducing nitrogen. After the effluent parameters meet the standards, it is discharged from the integrated reaction tank and directly discharged or reused after one or more deep post-treatments such as adsorption treatment, filtration separation treatment, and advanced oxidation treatment. At this time, the system's water inlet and outlet rates remain consistent, and the entire system is in dynamic balance.

[0020] It should be understood that the structure and principle of driving the conveying auger to rotate are common technologies in the field and will not be described in detail here.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The technology of the present invention purifies sewage by introducing the sewage into an integrated reaction tank after pretreatment, and continuously and alternately operates the anoxic process stage, anaerobic process stage and aerobic process stage of the sewage. The purpose of sewage treatment is achieved under the cooperation of various process areas. Compared with the traditional AAO sewage treatment process, the technology of the present invention occupies a smaller area and requires less investment. Compared with the traditional SBR treatment process, the technology of the present invention can continuously discharge and inlet water without waiting for reaction time, and the utilization rate of equipment is higher.

[0022] 2. For large-scale sewage treatment equipment, the technology of the present invention can be used to automatically add chemicals to the sewage for phosphorus removal treatment using equipment such as conveying auger, without the need for manual addition. For some sewage treatment pools installed higher, equipment such as lifting belts can also be used to automatically transport the chemicals to the top of the sewage treatment pool for addition. At the same time, the speed of the chemical addition can be controlled by controlling the speed of the conveying auger to achieve continuous dosing. It is more suitable for an integrated sewage treatment process with continuous water inlet and outlet, and the entire treatment system has a higher degree of automation.

[0023] 3. When adding the reagent, the technology of the present invention can use the sewage in the integrated reaction pool to dissolve and dilute the reagent, and then return it to the integrated reaction pool, without consuming extra water resources. At the same time, the reagent is dissolved and diluted before being added to the integrated reaction pool, and the reagent diffuses faster, preventing the excessive concentration of the reagent in the integrated reaction pool from affecting the clean water effluent index.

[0024] 4. The technology of the present invention cooperates with the fixed rack on the inner wall of the discharge barrel through the first sprinkler gear. When the water spraying part moves up and down, the sprinkler pipe can rotate, and the sprayed water can flush the inner wall of the discharge barrel in all directions to prevent the agent from adhering to the inner wall of the discharge barrel, thereby ensuring the stability of the agent dosage, and achieving better multi-angle flushing and cleaning effects. At the same time, it also prevents the agent from accumulating too much on the inner wall of the discharge barrel, causing equipment corrosion, thereby extending the service life of the equipment.

[0025] 5. The technology of the present invention realizes the three functions of material transmission, cleaning of the inner wall of the lower barrel and dissolution, dilution and stirring at the same time through an external driving force, which reduces the use of driving devices, has a more compact structure, better synchronization, and saves equipment manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 2 It is a structural schematic diagram of a dosing device in an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 3 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 4 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 5 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 6 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 7 It is a structural schematic diagram of a lower barrel in an embodiment of an IBR integrated sewage treatment process of the present invention; Figure 8 It is a structural schematic diagram of a water spraying part in an embodiment of an IBR integrated sewage treatment process of the present invention; Fig. 9 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; Fig.10 It is a structural schematic diagram of an embodiment of an IBR integrated sewage treatment process of the present invention; In the figure, 1, pretreatment tank; 2, integrated reaction tank; 2a, reaction zone; 2b, sedimentation zone; 2c, partition plate; 2c1, communication port; 3, dosing device; 4, feeding box; 5, discharge pipe; 6, conveying auger; 6a, rotating shaft; 7, discharge barrel; 7a, movable port; 7b, sliding groove; 7c, fixed rack; 8, stirring tank; 9, water inlet pipe; 9a, water pump; 10, water outlet pipe; 10a, first water outlet; 10b, second water outlet; 11, first bevel gear; 12, driving gear; 13, second bevel gear; 14, transmission rod; 15. stirring plate; 16. first driven gear; 16a. first tooth plate; 16a1. first arc-shaped toothed belt; 17. second driven gear; 17a. second tooth plate; 17a1. second arc-shaped toothed belt; 18. movable plate; 18a. straight toothed belt; 19. water spraying member; 19a. sliding block; 19b. water-passing member; 19b1. water-passing cavity; 19c. watering pipe; 19c1. watering hole; 20. first watering gear; 21. third bevel gear; 22. fourth bevel gear; 23. second watering gear; 24. third watering gear; 25. blocking plate. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present invention provides an IBR integrated sewage treatment process, such as Figures 1 to 10 As shown, the following steps are included: S1. Pretreatment: The sewage is introduced into the pretreatment tank 1 to remove large floating particles and inorganic large particles in the sewage, and the sewage concentration is adjusted to stabilize the concentration; S2. Biological treatment: The treated sewage in the pretreatment tank 1 is introduced into the integrated reaction tank 2, and the water inlet and outlet are maintained continuously. The reagent is added to the sewage through the dosing device 3. At the same time, the sewage in the integrated reaction tank 2 is intermittently aerated and stirred. The sewage is alternately cycled through aerobic, anoxic and anaerobic reactions. The intermittent aeration parameters and stirring parameters are adjusted to ensure that the supernatant in the reaction tank remains up to standard. S3. Post-treatment: The effluent from S2 is directly discharged or reused after deep treatment; The dosing device 3 in S2 includes a feeding box 4, a discharging pipe 5 is provided on the feeding box 4, a conveying auger 6 is provided in the discharging pipe 5, a discharging cylinder 7 is provided at one end of the discharging pipe 5 away from the feeding box 4, a stirring tank 8 is provided below the discharging cylinder 7, a water inlet pipe 9 is provided on the stirring tank 8, a water outlet pipe 10 is provided at the bottom of the stirring tank 8, the bottom of the stirring tank 8 is higher than the top of the pretreatment tank 1, the water outlet end of the water outlet pipe 10 is located in the pretreatment tank 1, and the conveying auger 6 is provided in the pretreatment tank 1. 6 includes a rotating shaft 6a, and a first bevel gear 11 and a driving gear 12 are arranged at one end of the rotating shaft 6a close to the stirring tank 8. The first bevel gear 11 and the driving gear 12 are coaxial with the rotating shaft 6a. A second bevel gear 13 is meshed with the first bevel gear 11, and the axis direction of the second bevel gear 13 is vertical. A transmission rod 14 is vertically coaxially arranged below the second bevel gear 13, and a plurality of stirring plates 15 are evenly arranged at the lower end of the transmission rod 14; A first driven gear 16 and a second driven gear 17 are provided on both sides of the driving gear 12. The first driven gear 16 and the second driven gear 17 are both meshed with the driving gear 12. A first tooth plate 16a is provided on the first driven gear 16, and a second tooth plate 17a is provided on the second driven gear 17. The first driven gear 16 is coaxial with the first tooth plate 16a, and the second driven gear 17 is coaxial with the second tooth plate 17a. A first arcuate toothed belt 16a1 is provided on the edge of the first tooth plate 16a, and a second arcuate toothed belt 17a1 is provided on the edge of the second tooth plate 17a. The first arcuate toothed belt 16a1 and the second arcuate toothed belt 17a1 are of the same size, and the curvature is less than or equal to π, a movable plate 18 is arranged between the first tooth plate 16a and the second tooth plate 17a, the movable plate 18 is in the shape of a long strip, and straight tooth belts 18a are arranged on both sides of the movable plate 18, the first arc tooth belt 16a1 and the second arc tooth belt 17a1 are meshed with the straight tooth belt 18a, a water spraying member 19 is arranged on the movable plate 18, the water spraying member 19 is connected to the water inlet pipe 9, the water spraying member 19 is located in the discharge barrel 7, a movable port 7a is vertically opened on the discharge barrel 7, and sliding grooves 7b are opened on both sides of the movable port 7a, a sliding block 19a matched with the sliding groove 7b is arranged on the water spraying member 19, and the water outlet end of the water spraying member 19 is located in the discharge barrel 7; When the conveying auger 6 rotates, the first bevel gear 11 rotates synchronously, driving the second bevel gear 13 to rotate, and the second bevel gear 13 drives the transmission rod 14 and the stirring plate 15 to rotate synchronously, so as to perform rotation and stirring in the stirring tank 8, and the driving gear 12 also rotates synchronously with the conveying auger 6, driving the first driven gear 16 and the second driven gear 17 to rotate, and the first arc toothed belt 16a1 and the second arc toothed belt 17a1 rotate synchronously, driving the movable plate 18 to reciprocate up and down, and the water spraying member 19 repeatedly washes the inner wall of the discharge barrel 7 up and down; The water inlet speed in the pretreatment tank 1 is consistent with the water outlet speed of the integrated reaction tank 2, and the entire reaction process is in dynamic balance. When the reagent is continuously added to the integrated reaction tank 2 by the dosing device 3, the water spraying member 19 repeatedly flushes the discharge barrel 7 up and down to prevent the reagent from adhering to the inner wall of the discharge barrel 7, thereby maintaining the stability of the reagent dosage and ensuring the stability of the entire reaction process.

[0030] The average particle size of the large floating particles removed in S1 is above 10 mm, and the average particle size of the inorganic large particles removed is above 2 mm.

[0031] The stable regulation of sewage concentration in S1 refers to mixing high-concentration sewage and low-concentration sewage in the regulating tank.

[0032] The intermittent aeration parameters in S2 include an aeration volume, an aeration time, and the interval time between two adjacent aerations. The stirring parameters in S2 include the stirring speed and the continuous stirring time after each aeration.

[0033] The deep treatment in S3 includes any one or more of the following treatment processes: adsorption treatment, filtration separation treatment, and advanced oxidation treatment.

[0034] The integrated reaction pool 2 in S2 includes a reaction zone 2a and a sedimentation zone 2b, a partition plate 2c is arranged between the reaction zone 2a and the sedimentation zone 2b, a connecting port 2c1 for connecting the reaction zone 2a and the sedimentation zone 2b is opened at the lower part of the partition plate 2c, intermittent aeration and stirring are carried out in the reaction zone 2a, the pretreated sewage in S1 flows into the upper part of the reaction zone 2a, and the effluent overflows from the upper part of the sedimentation zone 2b.

[0035] The water inlet end of the water inlet pipe 9 is located in the integrated reaction tank 2 , and a water pump 9 a is provided on the water inlet pipe 9 .

[0036] The water spraying member 19 includes a water passing member 19b, a water passing cavity 19b1 is provided on the water passing member 19b, the water inlet pipe 9 is communicated with the water passing cavity 19b1, a water sprinkling pipe 19c is provided on the water passing member 19b, the water sprinkling pipe 19c is rotatably connected with the water passing member 19b, a plurality of water sprinkling holes 19c1 are provided on the water sprinkling pipe 19c, the water sprinkling pipe 19c is communicated with the water passing cavity 19b1, a first water sprinkling gear 20 is rotatably connected to the water passing member 19b, the axial direction of the first water sprinkling gear 20 is horizontal, and a vertically arranged inner wall of the discharge barrel 7 There is a fixed rack 7c, which is meshed with the first sprinkler gear 20. The first sprinkler gear 20 is provided with a third bevel gear 21, which is coaxial with the first sprinkler gear 20. The third bevel gear 21 is meshed with a fourth bevel gear 22, and the axial direction of the fourth bevel gear 22 is vertical. The second sprinkler gear 23 is coaxially arranged on the fourth bevel gear 22. A third sprinkler gear 24 is provided on the outer wall of the sprinkler pipe 19c, and the third sprinkler gear 24 is meshed with the second sprinkler gear 23.

[0037] The water outlet pipe 10 includes a first water outlet portion 10a and a second water outlet portion 10b, wherein the first water outlet portion 10a is in a "U" shape, and the second water outlet portion 10b is in an inverted "U" shape, and the top of the second water outlet portion 10b is higher than the bottom of the mixing tank 8 and lower than the top of the mixing tank 8.

[0038] The movable plate 18 is provided with a blocking plate 25 , and the blocking plate 25 covers the movable opening 7 a .

[0039] The workflow is as follows: The sewage is introduced into the pretreatment tank 1, and large floating particles with an average particle size of more than 10 mm and inorganic large particles with an average particle size of more than 2 mm in the sewage are removed, and the sewage concentration is adjusted to stabilize within the specified concentration range, and then the sewage with adjusted concentration is introduced into the integrated reaction tank 2. When the phosphorus content of the introduced sewage is high, the conveying auger 6 and the water pump 9a are turned on, and the conveying auger 6 conveys the medicine in the feeding box 4 to the discharge cylinder 7, and drops from the discharge cylinder 7 to the stirring tank 8. The water pump 9a draws the sewage in the integrated reaction tank 2 into the water inlet pipe 9, and the water in the water inlet pipe 9 is sprayed from the water spraying part 19 into the stirring tank 8 to dissolve the medicine. At this time, the rotating shaft 6a of the conveying auger 6 continues to rotate, driving the first bevel gear 11 and the driving gear 12 to rotate, the first bevel gear 11 drives the second bevel gear and the transmission rod 14 to rotate, and the transmission rod 14 drives the stirring plate 15 at the lower end to rotate to the bottom of the stirring tank 8. The medicine and water are stirred, and the driving gear 12 drives the first driven gear 16 and the second driven gear 17 to rotate, so that the first arc toothed belt 16a1 and the second arc toothed belt 17a1 are alternately meshed with the straight toothed belt 18a, driving the movable plate 18 to reciprocate up and down. Through the cooperation of the sliding block 19a and the sliding groove 7b, the water spraying member 19 also reciprocates up and down. The first sprinkler gear 20 rotates under the action of the fixed rack 7c, and the third bevel gear 21 also rotates accordingly, thereby driving the fourth bevel gear 22 and the second sprinkler gear 23 to rotate. The second sprinkler gear 23 drives the third sprinkler gear 24 to rotate, and the sprinkler pipe 19c also rotates together. The direction of the water flow sprayed from the sprinkler hole 19c1 changes, and the inner wall of the discharge barrel 7 is rinsed and cleaned in all directions. The rinsed water falls into the mixing tank 8 to dissolve and dilute the medicine.

[0040] The reagent and water flow back into the integrated reaction tank 2 to remove phosphorus from the sewage in the integrated reaction tank 2. At the same time, the sewage in the integrated reaction tank 2 is intermittently aerated and stirred, and the sewage is alternately circulated to undergo aerobic, anoxic and anaerobic reactions to achieve the effect of removing phosphorus and reducing nitrogen. After the effluent parameters meet the standards, it is discharged from the integrated reaction tank 2 and directly discharged or reused after one or more deep post-treatments such as adsorption treatment, filtration separation treatment, and advanced oxidation treatment. At this time, the system's water inlet and outlet rates remain consistent, and the entire system is in dynamic balance.

[0041] The technology of the present invention can continuously discharge and inlet water without waiting for reaction time, and the utilization rate of the equipment is higher. At the same time, the rotation speed of the conveying auger 6 can be controlled to control the unit time dosage of the agent, and the agent can be continuously and uninterruptedly added. It is more suitable for an integrated sewage treatment process with continuous water inlet and outlet, and the degree of automation of the entire treatment system is higher.

[0042] Since the water inlet pipe 9 may contain sewage extracted from the integrated reaction tank 2, if a general rotary nozzle is used, the inside is easily blocked, resulting in rotation failure. The use of gears to drive from the outside has higher reliability.

[0043] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An IBR integrated sewage treatment process, It is characterized in that The following steps are involved: S1. Pretreatment: The sewage is introduced into a pretreatment tank (1), large floating particles and inorganic large particles in the sewage are removed, and the sewage concentration is adjusted to stabilize the concentration; S2. Biological treatment: The treated sewage in the pretreatment tank (1) is introduced into the integrated reaction tank (2), and continuous water inflow and outflow are maintained. A reagent is added to the sewage through the dosing device (3). At the same time, the sewage in the integrated reaction tank (2) is intermittently aerated and stirred. The sewage is alternately cycled through aerobic, anoxic and anaerobic reactions. The intermittent aeration parameters and stirring parameters are adjusted to ensure that the supernatant in the reaction tank remains in a qualified state. S3. Post-treatment: The effluent from S2 is directly discharged or reused after deep treatment; The dosing device (3) in S2 comprises a feeding box (4), a discharging pipe (5) is provided on the feeding box (4), a conveying auger (6) is provided in the discharging pipe (5), a discharging cylinder (7) is provided at one end of the discharging pipe (5) away from the feeding box (4), a stirring tank (8) is provided below the discharging cylinder (7), a water inlet pipe (9) is provided on the stirring tank (8), a water outlet pipe (10) is provided at the bottom of the stirring tank (8), the bottom of the stirring tank (8) is higher than the top of the pretreatment tank (1), the water outlet end of the water outlet pipe (10) is located in the pretreatment tank (1), and the inlet pipe (9) is provided at the bottom of the stirring tank (8). The conveying auger (6) comprises a rotating shaft (6a), and a first bevel gear (11) and a driving gear (12) are arranged at one end of the rotating shaft (6a) close to the stirring tank (8), and the first bevel gear (11) and the driving gear (12) are both coaxial with the rotating shaft (6a), and a second bevel gear (13) is meshed with the first bevel gear (11), and the axis direction of the second bevel gear (13) is vertical, and a transmission rod (14) is vertically coaxially arranged below the second bevel gear (13), and a plurality of stirring plates (15) are evenly arranged at the lower end of the transmission rod (14); A first driven gear (16) and a second driven gear (17) are provided on both sides of the driving gear (12); the first driven gear (16) and the second driven gear (17) are both meshed with the driving gear (12); a first tooth plate (16a) is provided on the first driven gear (16); a second tooth plate (17a) is provided on the second driven gear (17); the first driven gear (16) is coaxial with the first tooth plate (16a); the second driven gear (17) is coaxial with the second tooth plate (17a); a first arcuate toothed belt (16a1) is provided on the edge of the first tooth plate (16a); a second arcuate toothed belt (17a1) is provided on the edge of the second tooth plate (17a); the first arcuate toothed belt (16a1) and the second arcuate toothed belt (17a1) are of the same size, and the arc is less than or equal to π A movable plate (18) is arranged between the first tooth plate (16a) and the second tooth plate (17a), the movable plate (18) is in the shape of an elongated strip, straight toothed belts (18a) are arranged on both sides of the movable plate (18), the first arc-shaped toothed belt (16a1) and the second arc-shaped toothed belt (17a1) are meshed with the straight toothed belt (18a), a water spraying member (19) is arranged on the movable plate (18), A water spraying member (19) is connected to the water inlet pipe (9), the water spraying member (19) is located in the discharge barrel (7), a movable opening (7a) is vertically opened on the discharge barrel (7), sliding grooves (7b) are opened on both sides of the movable opening (7a), and a sliding block (19a) matched with the sliding groove (7b) is arranged on the water spraying member (19), and the water outlet end of the water spraying member (19) is located in the discharge barrel (7); When the conveying auger (6) rotates, the first bevel gear (11) rotates synchronously, driving the second bevel gear (13) to rotate, and the second bevel gear (13) drives the transmission rod (14) and the stirring plate (15) to rotate synchronously, so as to perform rotational stirring on the stirring tank (8), and the driving gear (12) also rotates synchronously with the conveying auger (6), driving the first driven gear (16) and the second driven gear (17) to rotate, and the first arc-shaped toothed belt (16a1) and the second arc-shaped toothed belt (17a1) rotate synchronously, driving the movable plate (18) to reciprocate up and down, and the water spraying member (19) repeatedly washes the inner wall of the discharge barrel (7) up and down; The water inlet speed and water outlet speed in the integrated reaction pool (2) are kept consistent, and the entire reaction process is in dynamic equilibrium. When the reagent is continuously added into the integrated reaction pool (2) by the dosing device (3), the water spraying member (19) repeatedly flushes the discharge barrel (7) up and down to prevent the reagent from adhering to the inner wall of the discharge barrel (7), thereby maintaining a stable amount of reagent added, thereby ensuring the stable progress of the entire reaction process.

2. An IBR integrated sewage treatment process according to claim 1, Features: The stable regulation of sewage concentration in S1 refers to mixing high-concentration sewage and low-concentration sewage in the regulating tank.

3. An IBR integrated sewage treatment process according to claim 1, Features: The intermittent aeration parameters in S2 include an aeration volume, an aeration time, and the interval time between two adjacent aerations. The stirring parameters in S2 include the stirring speed and the continuous stirring time after each aeration.

4. An IBR integrated sewage treatment process according to claim 1, Features: The deep treatment in S3 includes any one or more of the following treatment processes: adsorption treatment, filtration separation treatment, and advanced oxidation treatment.

5. An IBR integrated sewage treatment process according to claim 1, Features: The integrated reaction tank (2) in S2 comprises a reaction zone (2a) and a sedimentation zone (2b), a partition plate (2c) is arranged between the reaction zone (2a) and the sedimentation zone (2b), a connecting port (2c1) for connecting the reaction zone (2a) and the sedimentation zone (2b) is opened at the lower part of the partition plate (2c), intermittent aeration and stirring are carried out in the reaction zone (2a), the wastewater pretreated in S1 flows into the upper part of the reaction zone (2a), and the effluent overflows from the upper part of the sedimentation zone (2b).

6. An IBR integrated sewage treatment process according to claim 1, Features: The water inlet end of the water inlet pipe (9) is located in the integrated reaction tank (2), and a water pump (9a) is provided on the water inlet pipe (9).

7. An IBR integrated sewage treatment process according to claim 1, Features: The water spraying member (19) comprises a water passing member (19b), a water passing cavity (19b1) is provided on the water passing member (19b), the water inlet pipe (9) is in communication with the water passing cavity (19b1), a water sprinkling pipe (19c) is provided on the water passing member (19b), the water sprinkling pipe (19c) is rotatably connected to the water passing member (19b), a plurality of water sprinkling holes (19c1) are provided on the water sprinkling pipe (19c), the water sprinkling pipe (19c) is in communication with the water passing cavity (19b1), a first water sprinkling gear (20) is rotatably connected to the water passing member (19b), the axial direction of the first water sprinkling gear (20) is in a horizontal direction, and a vertical water sprinkling gear (20) is provided on the inner wall of the discharge barrel (7). A fixed rack (7c) is provided, the fixed rack (7c) is meshed with the first sprinkler gear (20), a third bevel gear (21) is provided on the first sprinkler gear (20), the third bevel gear (21) is coaxial with the first sprinkler gear (20), a fourth bevel gear (22) is meshed with the third bevel gear (21), the axis direction of the fourth bevel gear (22) is vertical, a second sprinkler gear (23) is coaxially provided on the fourth bevel gear (22), a third sprinkler gear (24) is provided on the outer wall of the sprinkler pipe (19c), the third sprinkler gear (24) is meshed with the second sprinkler gear (23); The water in the water inlet pipe (9) enters the water passage cavity (19b1) and is sprayed out from the water spray hole (19c1). At this time, the water spray member (19) reciprocates up and down, and the first water spray gear (20) rotates under the action of the fixed rack (7c). The third bevel gear (21) also rotates accordingly, thereby driving the fourth bevel gear (22) and the second water spray gear (23) to rotate. The second water spray gear (23) drives the third water spray gear (24) to rotate, and the water spray pipe (19c) also rotates together. The direction of the water flow sprayed from the water spray hole (19c1) changes, and the inner wall of the discharge barrel (7) is flushed in all directions.

8. An IBR integrated sewage treatment process according to claim 1, Features: The water outlet pipe (10) comprises a first water outlet portion (10a) and a second water outlet portion (10b); the first water outlet portion (10a) is in a "U" shape, the second water outlet portion (10b) is in an inverted "U" shape, and the top of the second water outlet portion (10b) is higher than the bottom of the stirring tank (8) and lower than the top of the stirring tank (8).

9. An IBR integrated sewage treatment process according to claim 1, Features: A blocking plate (25) is provided on the movable plate (18), and the blocking plate (25) covers the movable opening (7a).

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