Separation, interception and recovery equipment suitable for continuous flow granular strains

Abstract

The utility model discloses separation, interception and recovery equipment suitable for continuous flow granular strains, which comprises a strain settler, a strain recovery device and a cyclone separator which are connected in sequence, the strain settler is arranged inside an anaerobic ammonia oxidation reactor, and the strain recovery device and the cyclone separator are arranged outside the anaerobic ammonia oxidation reactor; when anaerobic ammonia oxidation strain treatment is carried out, pond water of the anaerobic ammonia oxidation reactor enters the strain settler to be subjected to primary precipitation separation, one part of strains return to the anaerobic ammonia oxidation reactor through an outlet in the bottom of the strain settler, and the other part of strains enter the strain recovery device along with water flow to be intercepted and recovered again; and the cyclone separator is used for separating the strains collected in the strain recovery device, so that the strains return to the anaerobic ammonia oxidation reactor again. The anaerobic ammonium oxidation bacteria precipitator has the characteristics of compact structure, high stability, high treatment efficiency and the like, and solves the problems that the floating anaerobic ammonium oxidation bacteria block the precipitator and interfere the precipitation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a separation, interception and recovery device suitable for continuous flow granular bacteria. Background Art

[0002] A large number of combined processes have been derived from biological denitrification of sewage, and the anaerobic ammonium oxidation process is currently the most direct biological denitrification process, so it is known as the most promising sewage denitrification process. In order to better apply the anaerobic ammonium oxidation process to actual scale, the sewage treatment industry has invested a lot of resources in the cultivation and enrichment of anaerobic ammonium oxidation bacteria.

[0003] Anaerobic ammonium oxidizing bacteria are a type of bacteria belonging to the phylum Planctomycetes. Anaerobic ammonium oxidizing bacteria are generally considered to be autotrophic bacteria, using carbon dioxide or carbonate as a carbon source, ammonium salts as electron donors, and nitrite / nitrate as electron acceptors. They are of great significance to the global nitrogen cycle and are also important bacteria in sewage treatment.

[0004] However, the cultivation of anaerobic ammonium oxidizing bacteria is complex and difficult, the reproduction is slow, and the drainage loss is unacceptable. Therefore, when the anaerobic ammonium oxidizing reactor enters the engineering stage, the biggest problem in its continuous flow operation is the interception, recovery and filtration of anaerobic ammonium oxidizing bacteria. Although the sequencing batch operation scheme can prevent the loss of bacteria to a certain extent, its operation is complicated and difficult to achieve engineering and automation.

[0005] In the continuous flow engineering application of anaerobic ammonium oxidation reactors, it is difficult to achieve the precipitation, recovery, and inlet and outlet water filtration of anaerobic ammonium oxidation bacteria. The traditional internal and external sedimentation tanks are used to precipitate anaerobic ammonium oxidation bacteria, and the supernatant continues to flow into and out of the water. The method of regularly recovering bacteria has the following main defects:

[0006] (1) Traditional built-in precipitators are easily affected by anaerobic ammonium-oxidizing floating bacteria, which can cause clogging of the precipitator, inability to discharge water, or even overflow, resulting in the loss of a large number of bacteria.

[0007] (2) External sedimentation tanks occupy a large area, have high investment costs, and are difficult to renovate later;

[0008] (3) Anaerobic ammonia-oxidizing bacteria will float due to their own gas production, interfering with the sedimentation effect and clogging the three-phase separator. Traditional scrapers cannot solve this problem.

[0009] (4) Anaerobic ammonium-oxidizing bacteria may have different activities decreased due to their long residence time in the external sedimentation tank and the growth environment and reactor;

[0010] (5) Some of the anaerobic ammonium-oxidizing bacteria will float on the surface of the pool, and traditional sedimentation tanks cannot recover the floating bacteria. Utility Model Content

[0011] The technical problem to be solved by the utility model is as follows: in view of the difficulties in realizing the precipitation, recovery and inlet and outlet water filtration of anaerobic ammonia oxidizing bacteria in the prior art, a separation, interception and recovery device suitable for continuous flow granular bacteria with a compact structure, convenient operation, high stability and good treatment effect is provided.

[0012] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0013] A separation, interception and recovery device suitable for continuous flow granular bacteria, comprising: a bacteria settler, a bacteria recovery device and a cyclone separator, wherein the bacteria settler is installed inside an anaerobic ammonium oxidation reactor, the bacteria recovery device and the cyclone separator are arranged outside the anaerobic ammonium oxidation reactor, and the bacteria settler, the bacteria recovery device and the cyclone separator are connected in sequence through pipelines; when anaerobic ammonium oxidation bacteria are treated, the pool water of the anaerobic ammonium oxidation reactor enters the bacteria settler for preliminary precipitation and separation, a part of the anaerobic ammonium oxidation bacteria returns to the anaerobic ammonium oxidation reactor from the outlet at the bottom of the bacteria settler, and another part of the anaerobic ammonium oxidation bacteria enters the bacteria recovery device with the water flow, and is intercepted and recovered again, and the cyclone separator is used to separate the bacteria collected in the bacteria recovery device to realize the return of the anaerobic ammonium oxidation bacteria to the anaerobic ammonium oxidation reactor again.

[0014] As a further improvement of the utility model, the bacterial strain settler comprises: a clear liquid outlet pipe, an overflow weir, a settler body, an inlet baffle, an outlet and an inclined plate interception assembly; the settler body is installed in an anaerobic ammonia oxidation reactor, a plurality of inlet baffles are provided on one side of the inside of the settler body, a return inlet channel is formed between the settler body and the inlet baffle, and an outlet is provided at the bottom of the settler body; a movable inclined plate interception assembly is provided inside the settler body, the overflow weir is located on the upper part of the inclined plate interception assembly, and is connected to the clear liquid outlet on the side of the settler body The clear liquid outlet pipe is connected with the strain recovery device through the pipe; when the anaerobic ammonium oxidizing bacteria are initially separated, the inlet water carrying the anaerobic ammonium oxidizing bacteria flows into the settler body through the inlet channel, and some of the anaerobic ammonium oxidizing bacteria return to the anaerobic ammonium oxidizing reactor through the outlet under the action of gravity, and some of the anaerobic ammonium oxidizing bacteria in the supernatant hit the inclined plate interception component and fall back to the outlet and return to the anaerobic ammonium oxidizing reactor, and another part of the anaerobic ammonium oxidizing bacteria entrained in the supernatant enters the strain recovery device through the overflow weir and the clear liquid outlet pipe.

[0015] As a further improvement of the present invention, the inclined plate interception assembly includes: a float lifter, a movable pulley, an inclined plate, a rotating shaft and a lifting and limiting assembly; a plurality of the inclined plates are arranged in an "∧"-shaped structure in an interlaced manner inside the settler body, one end of the inclined plate is connected to the outer wall of the anaerobic ammonia oxidation reactor through a movable pulley, and the other end of the inclined plate is connected to the rotating shaft through a lifting and limiting assembly, and the rotating shaft is connected to the float lifter; when the inclined plate is blocked by the anaerobic ammonia oxidation bacteria and causes the water level in the anaerobic ammonia oxidation reactor to rise, the float lifter drives the lifting and limiting assembly to descend through the rotating shaft, so that the inclined plate changes from a "∧"-shaped state to a vertical state, forming a bacteria flow channel.

[0016] As a further improvement of the utility model, the lifting and limiting assembly includes: a movable gear, a rack and a connecting rod; the connecting rod is arranged on the outside of the settler body, the top of the connecting rod is connected to the rotating shaft, and a plurality of racks are arranged in parallel at the bottom of the connecting rod, a movable gear is arranged on the side of the rack, and the inclined plate is connected to the movable gear; when the float lifter drives the connecting rod to lift and lower through the rotating shaft, the movable gear engages with the rack, thereby driving the inclined plate to rotate.

[0017] As a further improvement of the present invention, a limiting groove is provided on the upper part of the connecting rod, a fixing screw is provided in the limiting groove, and the limiting groove and the fixing screw are used to limit the lifting and lowering displacement of the connecting rod.

[0018] As a further improvement of the present utility model, the bacterial strain recovery device includes a device body, the interior of the device body is divided into a bacterial strain interception area and a water storage tank, the upper part of the bacterial strain interception area is provided with a water inlet pipe, the water inlet pipe is connected with the clear liquid outlet pipe through a connecting pipe, the lower part of the bacterial strain interception area is provided with a bacterial strain recovery component connected with the cyclone separator, the outlet water of the bacterial strain settler enters the bacterial strain interception area of ​​the device body through the water inlet pipe, the intercepted bacteria are discharged from the lower part of the bacterial strain interception area, and the upper clear liquid enters the water storage tank; the lower part of the water storage tank is provided with a water outlet, the water outlet is connected with the water outlet pump through a pipe, and the upper part of the water storage tank is provided with an overflow pipe.

[0019] As a further improvement of the utility model, a floating bacteria recovery partition, a sinking bacteria partition and a water outlet partition are sequentially arranged in the bacterial strain interception area, the water outlet partition is close to the water storage tank, the floating bacteria recovery partition is close to the side wall of the device body, the water inlet pipe is located between the floating bacteria recovery partition and the sinking bacteria partition, a floating bacteria recovery channel is formed between the floating bacteria recovery partition and the side wall of the device body, a sinking bacteria recovery channel is formed between the floating bacteria recovery partition and the sinking bacteria partition, an upper clear liquid flow channel is formed between the sinking bacteria partition and the water outlet partition, the bottom of the floating bacteria recovery channel and the bottom of the sinking bacteria recovery channel are both connected to the bacterial strain recovery component, and the bottom of the floating bacteria recovery channel and the bottom of the sinking bacteria recovery channel are open.

[0020] As a further improvement of the present invention, the bacterial strain recovery component includes a bacterial strain recovery pump and a recovery pipe, the output port of the recovery pipe is connected to the cyclone separator through the bacterial strain recovery pump, the input port of the recovery pipe is respectively connected to the bottom of the floating bacteria recovery channel and the bottom of the settled bacteria recovery channel, and a floating bacteria recovery valve is provided between the recovery pipe and the floating bacteria recovery channel, and a settled bacteria recovery valve is provided between the recovery pipe and the settled bacteria recovery channel, and the settled bacteria recovery valve and the floating bacteria recovery valve are opened at intervals.

[0021] As a further improvement of the utility model, the top of the cyclone separator is provided with a miscellaneous bacteria outlet, the bottom of the cyclone separator is provided with a strain recovery port, and a cutting pump is provided on the connecting pipeline between the cyclone separator and the strain recovery pump; the cutting pump crushes the anaerobic ammonia-oxidizing bacteria and sends them into the cyclone separator for separation, impurities are discharged through the miscellaneous bacteria outlet, and the anaerobic ammonia-oxidizing bacteria are returned to the anaerobic ammonia-oxidizing reactor through the strain recovery port.

[0022] As a further improvement of the utility model, the submerged bacteria recovery valve, the floating bacteria recovery valve, the bacteria recovery pump and the cutting pump are all connected to the PLC controller to realize the automatic recovery of the anaerobic ammonia-oxidizing bacteria.

[0023] Compared with the prior art, the advantages of the utility model are:

[0024] The utility model is suitable for separating, intercepting and recovering equipment of continuous flow granular bacteria. The main structure of the equipment is composed of a bacteria settler, a bacteria recovery device and a cyclone separator. The bacteria settler is installed inside the anaerobic ammonium oxidation reactor, and the bacteria recovery device and the cyclone separator are arranged outside the anaerobic ammonium oxidation reactor. The bacteria settler, the bacteria recovery device and the cyclone separator are connected in sequence through pipelines, so that the sedimentation, recovery, crushing and separation of the bacteria are integrated. Moreover, the form of built-in settler + external bacteria recovery + crushing and separation occupies a small area and does not require a large sedimentation tank. The external bacteria recovery device can further recover the bacteria to prevent the loss of the bacteria. The cyclone separator is used to separate the miscellaneous bacteria, which avoids the miscellaneous bacteria running anaerobic Oxygen ammonia oxidation reaction; when the anaerobic ammonium oxidation bacteria are treated, the pool water of the anaerobic ammonium oxidation reactor enters the bacteria settler for preliminary sedimentation and separation. A part of the anaerobic ammonium oxidation bacteria returns to the anaerobic ammonium oxidation reactor from the outlet at the bottom of the bacteria settler, and the other part of the anaerobic ammonium oxidation bacteria enters the bacteria recovery device with the water flow, and is intercepted and recovered again. The bacteria collected in the bacteria recovery device are separated by a cyclone separator, and the anaerobic ammonium oxidation bacteria are returned to the anaerobic ammonium oxidation reactor again, which greatly improves the efficiency of the continuous flow treatment of the anaerobic ammonium oxidation reactor, solves the problem of the floating of anaerobic ammonium oxidation bacteria affecting the sedimentation effect, and realizes the maintenance of the activity of the anaerobic ammonium oxidation bacteria, which has a great supporting effect on the stable operation of the anaerobic ammonium oxidation reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structural principle of the equipment for separating, intercepting and recovering continuous flow granular bacteria in a specific embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structural principle of the bacterial strain settler in a specific embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure principle of the bacterial strain settler in a specific embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure principle of the bacterial strain recovery device in a specific embodiment of the utility model;

[0029] Legend: 100, bacterial culture settler; 101, clear liquid outlet pipe; 102, overflow weir; 103, float lifter; 104, movable pulley; 105, settler body; 106, water inlet baffle; 107, water inlet flow; 108, supernatant; 109, outlet; 110, inclined plate; 111, limit groove; 112, fixing screw; 113, rotating shaft; 114, supernatant outlet; 115, movable gear; 116, rack; 117, connecting rod; 200, bacterial culture return Collection device; 201, water outlet pump; 202, water inlet pipe; 203, bacteria recovery pump; 204, connecting pipe; 205, floating bacteria recovery baffle; 206, sedimentary bacteria baffle; 207, water outlet baffle; 208, water outlet; 209, overflow pipe; 210, sedimentary bacteria recovery valve; 211, floating bacteria recovery valve; 212, device body; 213, water storage tank; 214, recovery pipe; 300, cyclone separator; 301, miscellaneous bacteria outlet; 302, bacteria recovery port; 303, cutting pump. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0031] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] Example

[0034] like Figures 1 to 4 As shown, the utility model is suitable for separation, interception and recovery equipment of continuous flow granular bacteria, including: a bacteria settler 100, a bacteria recovery device 200 and a cyclone separator 300, the bacteria settler 100 is installed inside the anaerobic ammonium oxidation reactor, the bacteria recovery device 200 and the cyclone separator 300 are arranged outside the anaerobic ammonium oxidation reactor, and the bacteria settler 100, the bacteria recovery device 200 and the cyclone separator 300 are connected in sequence by pipelines. When anaerobic ammonium oxidizing bacteria are being treated, the pool water of the anaerobic ammonium oxidizing reactor enters the bacteria settler 100 for preliminary sedimentation and separation. A portion of the anaerobic ammonium oxidizing bacteria returns to the anaerobic ammonium oxidizing reactor from the outlet 109 at the bottom of the bacteria settler 100, and another portion of the anaerobic ammonium oxidizing bacteria flows into the bacteria recovery device 200 for interception and recovery. The cyclone separator 300 is used to separate the bacteria collected in the bacteria recovery device 200 to enable the anaerobic ammonium oxidizing bacteria to return to the anaerobic ammonium oxidizing reactor again. The form of internal sedimentation + external recovery is adopted to minimize the loss of bacteria.

[0035] In this embodiment, the main structure of the equipment is composed of a strain settler 100, a strain recovery device 200 and a cyclone separator 300. The main structure of the equipment can be made of corrosion-resistant plastic plates. The strain settler 100 is installed inside the anaerobic ammonia oxidation reactor, and the strain recovery device 200 and the cyclone separator 300 are arranged outside the anaerobic ammonia oxidation reactor. The strain settler 100, the strain recovery device 200 and the cyclone separator 300 are connected in sequence through pipelines, so that the sedimentation, recovery, crushing and separation of the strains are integrated. Moreover, the form of built-in settler + external strain recovery + crushing and separation occupies a small area and does not require a large sedimentation tank. The external strain recovery device 200 can further recover the strains to prevent the loss of the strains. The cyclone separator 300 is used to separate the miscellaneous bacteria to avoid the miscellaneous bacteria from running the anaerobic ammonia oxidation reaction. When the anaerobic ammonium oxidizing bacteria are treated, the pool water of the anaerobic ammonium oxidizing reactor enters the bacteria settler 100 for preliminary sedimentation and separation. A portion of the anaerobic ammonium oxidizing bacteria returns to the anaerobic ammonium oxidizing reactor from the outlet at the bottom of the bacteria settler 100, and another portion of the anaerobic ammonium oxidizing bacteria enters the bacteria recovery device 200 with the water flow, and is intercepted and recovered again. The bacteria collected in the bacteria recovery device 200 are separated by a cyclone separator 300, so that the anaerobic ammonium oxidizing bacteria return to the anaerobic ammonium oxidizing reactor again, greatly improving the efficiency of the continuous flow treatment of the anaerobic ammonium oxidizing reactor, solving the problem of the floating of the anaerobic ammonium oxidizing bacteria affecting the sedimentation effect, and maintaining the activity of the anaerobic ammonium oxidizing bacteria, which has a great supporting effect on the stable operation of the anaerobic ammonium oxidizing reactor.

[0036] like Figure 2 and Figure 3As shown, the bacterial strain settler 100 includes: a clear liquid outlet pipe 101, an overflow weir 102, a settler body 105, a water inlet baffle 106, an outlet 109 and an inclined plate interception assembly. The settler body 105 is installed in the anaerobic ammonium oxidation reactor, that is, a built-in settler is provided, which is conducive to saving space and reducing economic costs. The subsequent anaerobic ammonium oxidation reactor tank body can still be functionally transformed and technically optimized and upgraded. Two water inlet baffles 106 of different lengths are provided on one side of the settler body 105, wherein the top of one water inlet baffle 106 is higher than the other water inlet baffle 106, and correspondingly, the bottom of the water inlet baffle 106 with a lower top extends to the bottom of the settler body 105 to form an outlet 109, and a return water inlet channel is formed between the settler body 105 and the water inlet baffle 106, which extends the distance of water inlet and improves the interception rate of bacterial strains. A movable inclined plate interception assembly is provided inside the settler body 105, and the overflow weir 102 is located at the upper part of the inclined plate interception assembly and is connected to the clear liquid outlet pipe 101 on the side of the settler body 105. The clear liquid outlet pipe 101 is connected to the strain recovery device 200 through a pipeline. When the anaerobic ammonium oxidizing bacteria are initially separated, the influent water flow 107 carrying the anaerobic ammonium oxidizing bacteria enters the settler body 105 through the inlet channel, and part of the anaerobic ammonium oxidizing bacteria returns to the anaerobic ammonium oxidizing reactor through the outlet 109 under the action of gravity. Part of the anaerobic ammonium oxidizing bacteria in the supernatant 108 falls back to the outlet 109 after hitting the inclined plate interception assembly and returns to the anaerobic ammonium oxidizing reactor. Another part of the anaerobic ammonium oxidizing bacteria entrained in the supernatant 108 passes through the overflow weir 102 and flows into the clear liquid outlet pipe 101 from the supernatant outlet 114, and finally enters the strain recovery device 200.

[0037] The equipment of this embodiment is in operation when the anaerobic ammonium oxidation reactor is in continuous flow operation. At this time, the anaerobic ammonium oxidation reactor is in a stirring state, and the anaerobic ammonium oxidation bacteria are mixed in the pool. Since it is inevitable that bacteria float on the water surface in the anaerobic ammonium oxidation reactor, but the water inlet of the bacteria settler 100 is deep below the liquid level, only the middle layer of liquid enters the bacteria settler 100, thereby retaining most of the light bacteria that have floated.

[0038] like Figure 2 and Figure 3As shown, the inclined plate interception assembly includes: a float lifter 103, a movable pulley 104, an inclined plate 110, a rotating shaft 113 and a lifting and limiting assembly. A plurality of inclined plates 110 are arranged in a "∧"-shaped structure in an interlaced manner inside the settler body 105, and a flow channel for the supernatant 108 is formed between adjacent inclined plates 110. At the same time, the flow path of the supernatant 108 can also be extended to improve the interception rate of the bacterial species. During operation, the number of layers and size of the inclined plates 110 can be adjusted according to actual working conditions. One end of the installation shaft of the inclined plate 110 is connected to the outer wall of the anaerobic ammonium oxidation reactor through the movable pulley 104, and the movable pulley 104 is used to reduce the friction between the inclined plate 110 and the anaerobic ammonium oxidation reactor. The other end of the installation shaft of the inclined plate 110 is connected to the rotating shaft 113 through the lifting and limiting assembly, and the rotating shaft 113 is connected to the float lifter 103. When the inclined plate 110 is blocked by the anaerobic ammonium oxidizing bacteria and the water level in the anaerobic ammonium oxidizing reactor rises, the float lifter 103 drives the lifting limit assembly to descend through the rotating shaft 113, so that the inclined plate 110 changes from the "∧" shape state to the vertical state "‖", and a bacteria flow channel is formed between adjacent inclined plates 110.

[0039] like Figure 2 As shown, the lifting and limiting assembly includes: a movable gear 115, a rack 116 and a connecting rod 117. The connecting rod 117 is arranged on the outside of the settler body 105, the top of the connecting rod 117 is connected to the rotating shaft 113, and a plurality of racks 116 are arranged in parallel at the bottom of the connecting rod 117, and a movable gear 115 is arranged on the side of the rack 116. The inclined plate 110 is connected to the movable gear 115, that is, multiple inclined plates 110 are rotated synchronously. When the floating ball lifter 103 drives the connecting rod 117 to rise and fall through the rotating shaft 113, the movable gear 115 is engaged with the rack 116, thereby driving the inclined plate 110 to rotate. By adopting the form of a movable inclined plate 110, the problem that the inclined plate 110 in the settler is easily blocked is solved. In other embodiments, a connecting rod assembly can also be used to control the state of the inclined plate 110.

[0040] like Figure 2 As shown, a limit groove 111 is provided on the upper part of the connecting rod 117, and a fixing screw 112 is provided in the limit groove 111. The limit groove 111 and the fixing screw 112 are used to limit the lifting displacement of the connecting rod 117 to ensure that the rotation angle of the inclined plate 110 is within a preset range, and the inclined plate 110 is automatically cleaned after being blocked. By setting a movable inclined plate, the bacterial culture settler 100 is not easy to be blocked, and can be automatically cleaned after being blocked, without stopping, disassembling and unblocking, reducing labor costs, and ensuring the continuous operation of the bacterial culture settler 100.

[0041] like Figure 4As shown, the bacterial strain recovery device 200 includes a device body 212, and the interior of the device body 212 is divided into a bacterial strain interception area and a water storage tank 213. A water inlet pipe 202 is provided at the upper part of the bacterial strain interception area, and the water inlet pipe 202 is connected to the clear liquid outlet pipe 101 through a connecting pipe 204. A bacterial strain recovery component connected to the cyclone separator 300 is provided at the lower part of the bacterial strain interception area. The outlet water of the bacterial strain settler 100 enters the bacterial strain interception area of ​​the device body 212 through the water inlet pipe 202. The intercepted bacterial strains are discharged from the lower part of the bacterial strain interception area, and the upper clear liquid enters the water storage tank 213. A water outlet 208 is provided at the lower part of the water storage tank 213, and the water outlet 208 is connected to the water outlet pump 201 through a pipe. An overflow pipe 209 is provided at the upper part of the water storage tank 213 to achieve smooth discharge of the supernatant.

[0042] like Figure 4 As shown, a floating bacteria recovery baffle 205, a sinking bacteria baffle 206 and a water outlet baffle 207 are sequentially arranged in the bacterial strain interception area, the water outlet baffle 207 is close to the water storage tank 213, the floating bacteria recovery baffle 205 is close to the side wall of the device body 212, the water inlet pipe 202 is located between the floating bacteria recovery baffle 205 and the sinking bacteria baffle 206, a floating bacteria recovery channel is formed between the floating bacteria recovery baffle 205 and the side wall of the device body 212, a sinking bacteria recovery channel is formed between the floating bacteria recovery baffle 205 and the sinking bacteria baffle 206, an upper clear liquid flow channel is formed between the sinking bacteria baffle 206 and the water outlet baffle 207, the bottom of the floating bacteria recovery channel and the bottom of the sinking bacteria recovery channel are both connected to the bacterial strain recovery component, and the bottom of the floating bacteria recovery channel and the bottom of the sinking bacteria recovery channel are open.

[0043] Furthermore, the bacterial strain recovery component includes a bacterial strain recovery pump 203 and a recovery pipe 214, the output port of the recovery pipe 214 is connected to the cyclone separator 300 through the bacterial strain recovery pump 203, the input port of the recovery pipe 214 is connected to the bottom of the floating bacteria recovery channel and the bottom of the settled bacteria recovery channel respectively, and a floating bacteria recovery valve 211 is provided between the recovery pipe 214 and the floating bacteria recovery channel, and a settled bacteria recovery valve 210 is provided between the recovery pipe 214 and the settled bacteria recovery channel, and the settled bacteria recovery valve 210 and the floating bacteria recovery valve 211 are opened at intervals.

[0044] like Figure 1 As shown, a bacteria outlet 301 is provided at the top of the cyclone separator 300, an anaerobic ammonium oxidizing bacteria outlet 302 is provided at the bottom of the cyclone separator 300, and a cutting pump 303 is provided on the connecting pipeline between the cyclone separator 300 and the bacteria recovery pump 203. The cutting pump 303 crushes the anaerobic ammonium oxidizing bacteria and then sends them into the cyclone separator 300 for separation, impurities are discharged through the bacteria outlet 301, and the anaerobic ammonium oxidizing bacteria are returned to the anaerobic ammonium oxidation reactor through the anaerobic ammonium oxidizing bacteria outlet 302.

[0045] Furthermore, both the settled bacteria recovery valve 210 and the floating bacteria recovery valve 211 are electric valves, and the settled bacteria recovery valve 210, the floating bacteria recovery valve 211, the bacteria recovery pump 203 and the cutting pump 303 are all connected to the PLC controller to realize automatic recovery of anaerobic ammonia-oxidizing bacteria.

[0046] When the device is operating normally:

[0047] The water from the anaerobic ammonium oxidation reactor pool enters the bacterial strain settler 100 through the inlet water flow 107. The settler body 105 isolates the anaerobic ammonium oxidation reactor pool water and the floating bacteria on the pool surface, creating a relatively static environment. The inlet baffle 106 guides the inlet water flow 107 from the bottom into the settler. At this time, part of the anaerobic ammonium oxidation bacteria in the inlet water flow 107 returns to the pool through the outlet 109 under the action of gravity, and part of the anaerobic ammonium oxidation bacteria carried in the supernatant 108 falls back to the outlet 109 after hitting the inclined plate 110, and finally returns to the pool. After sedimentation, the anaerobic ammonium oxidation pool water passes through the overflow weir 102 to reach the supernatant outlet 114, and enters the bacterial strain recovery device 200 through the clear liquid outlet pipe 101 and the connecting pipe 204.

[0048] The effluent from the bacterial strain settler 100 passes through the water inlet pipe 202 and enters the bacterial strain recovery device 200. At this time, the bacterial strains in the effluent are divided into floating bacteria and sinking bacteria. When the sinking bacteria recovery valve 210 and the floating bacteria recovery valve 211 are not opened, the sinking bacteria sink to the lower part of the bacterial strain interception area and are concentrated between the floating bacteria recovery partition 205 and the water outlet partition 207. The floating bacteria are concentrated in the upper part of the bacterial strain interception area and are located between the floating bacteria recovery partition 205 and the sinking bacteria partition 206. The anaerobic ammonia oxidation effluent enters the water storage tank 213 through the water outlet partition 207. When it reaches a certain liquid level, the water outlet pump 201 is started by the liquid level switch to send the effluent to subsequent treatment.

[0049] This equipment is automatically controlled by PLC. After the operator sets the control parameters, the submerged bacteria recovery valve 210 and the floating bacteria recovery valve 211 are automatically opened regularly. The two valves are linked with the bacteria recovery pump 203 and the cutting pump 303. When one of the valves is opened, the bacteria recovery pump 203 and the cutting pump 303 are automatically started, but the two valves cannot be opened at the same time. Since the height of the top of the floating bacteria recovery baffle 205 is lower than the water outlet baffle 207, when the floating bacteria recovery valve 211 is opened, the anaerobic ammonium oxidation effluent will drive the floating bacteria to be pumped away by the bacteria recovery pump 203. The cutting pump 303 crushes the bacteria and enters the cyclone separator 300 for separation. Impurities are discharged through the miscellaneous bacteria outlet 301, and the anaerobic ammonium oxidizing bacteria return to the anaerobic ammonium oxidation reactor through the bottom anaerobic ammonium oxidizing bacteria outlet 302.

[0050] In case of equipment abnormality:

[0051] Since anaerobic ammonium oxidizing bacteria are easy to clump together and block the inclined plate 110, at this time, since the pool water cannot flow out through the overflow weir 102, the pool water rises, driving the float lifter 103 to rise, and driving the rack 116 to descend through the rotating shaft 113. The rack 116 drives the movable gear 115 to rotate, so that the inclined plate 110 changes from the "∧" state to the vertical state, and the anaerobic ammonium oxidizing bacteria blocking the inclined plate 110 float up and are discharged through the overflow weir 102. After the blocked bacteria are discharged, the float lifter 103 falls, and the inclined plate 110 returns to its normal state.

[0052] Due to the existence of the limited slot 111 and the fixing screw 112, the rack 116 can only move within a certain range, thereby ensuring that the inclined plate 110 can only switch between the "∧" state and the vertical state. By installing a sensor (not shown in the figure) on the fixing screw 112, when the rack 116 falls, the floating bacteria recovery valve 211 is opened through the PLC automatic controller, and after the bacteria recovery pump 203 is turned on, the cutting pump 303 is started to crush the floating bacteria, and separated through the cyclone separator 300, the impurities are discharged through the miscellaneous bacteria outlet 301, and the anaerobic ammonia oxidizing bacteria return to the anaerobic ammonia oxidizing reactor through the bottom anaerobic ammonia oxidizing bacteria outlet 302, maintaining the high activity of the anaerobic ammonia oxidizing bacteria and ensuring the water inlet and outlet efficiency.

[0053] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A device for separating, intercepting and recovering continuous flow granular bacteria, characterized in that: include: A strain settler (100), a strain recovery device (200) and a cyclone separator (300), wherein the strain settler (100) is installed inside the anaerobic ammonium oxidation reactor, the strain recovery device (200) and the cyclone separator (300) are arranged outside the anaerobic ammonium oxidation reactor, and the strain settler (100), the strain recovery device (200) and the cyclone separator (300) are connected in sequence through pipelines; when the anaerobic ammonium oxidation strain treatment is carried out, the water in the anaerobic ammonium oxidation reactor enters the anaerobic ammonium oxidation reactor. The anaerobic ammonium oxidizing bacteria enter the strain settler (100) for preliminary sedimentation and separation, and a portion of the anaerobic ammonium oxidizing bacteria returns to the anaerobic ammonium oxidizing reactor through the outlet (109) at the bottom of the strain settler (100), and another portion of the anaerobic ammonium oxidizing bacteria enters the strain recovery device (200) with the water flow, and is intercepted and recovered again. The cyclone separator (300) is used to separate the bacteria collected in the strain recovery device (200) so that the anaerobic ammonium oxidizing bacteria can be returned to the anaerobic ammonium oxidizing reactor again.

2. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 1, characterized in that: The bacterial strain settler (100) comprises: a clear liquid outlet pipe (101), an overflow weir (102), a settler body (105), a water inlet baffle (106), an outlet (109) and an inclined plate interception assembly; the settler body (105) is installed in an anaerobic ammonia oxidation reactor, a plurality of water inlet baffles (106) are provided on one side of the settler body (105), a return water inlet channel is formed between the settler body (105) and the water inlet baffle (106), and an outlet (109) is provided at the bottom of the settler body (105); a movable inclined plate interception assembly is provided inside the settler body (105), the overflow weir (102) is located at the upper part of the inclined plate interception assembly and is connected to the clear liquid on the side of the settler body (105). The anaerobic ammonium oxidizing bacteria strains are initially separated from the anaerobic ammonium oxidizing bacteria strains by passing the inlet water flow (107) carrying the anaerobic ammonium oxidizing bacteria strains through the inlet channel into the interior of the settler body (105), and part of the anaerobic ammonium oxidizing bacteria strains return to the anaerobic ammonium oxidizing reactor through the outlet (109) under the action of gravity, and part of the anaerobic ammonium oxidizing bacteria strains in the supernatant (108) fall back to the outlet (109) after hitting the inclined plate interception component and return to the anaerobic ammonium oxidizing reactor, and another part of the anaerobic ammonium oxidizing bacteria strains entrained in the supernatant (108) enter the bacteria strain recovery device (200) through the overflow weir (102) and the clear liquid outlet pipe (101).

3. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 2, characterized in that: The inclined plate interception assembly comprises: a float lifter (103), a movable pulley (104), an inclined plate (110), a rotating shaft (113) and a lifting and limiting assembly; a plurality of the inclined plates (110) are arranged in an "∧"-shaped structure in an alternating manner inside the settler body (105); one end of the inclined plate (110) is connected to the outer wall of the anaerobic ammonium oxidation reactor through the movable pulley (104); the other end of the inclined plate (110) is connected to the rotating shaft (113) through the lifting and limiting assembly; the rotating shaft (113) is connected to the float lifter (103); when the inclined plate (110) is blocked by the anaerobic ammonium oxidation bacteria and the water level in the anaerobic ammonium oxidation reactor rises, the float lifter (103) drives the lifting and limiting assembly to descend through the rotating shaft (113), so that the inclined plate (110) changes from the "∧"-shaped state to a vertical state, thereby forming a bacteria flow channel.

4. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 3, characterized in that: The lifting and limiting assembly comprises: a movable gear (115), a rack (116) and a connecting rod (117); the connecting rod (117) is arranged on the outside of the settler body (105); the top of the connecting rod (117) is connected to the rotating shaft (113); a plurality of racks (116) are arranged in parallel at the bottom of the connecting rod (117); a movable gear (115) is arranged on the side of the rack (116); and the inclined plate (110) is connected to the movable gear (115); when the floating ball lifter (103) drives the connecting rod (117) to rise and fall through the rotating shaft (113), the movable gear (115) is meshed with the rack (116), thereby driving the inclined plate (110) to rotate.

5. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 4, characterized in that: A limiting groove (111) is provided on the upper portion of the connecting rod (117), a fixing screw (112) is provided in the limiting groove (111), and the limiting groove (111) and the fixing screw (112) are used to limit the lifting and lowering displacement of the connecting rod (117).

6. The separation, interception and recovery device for continuous flow granular bacteria according to any one of claims 2 to 5, characterized in that: The bacterial strain recovery device (200) comprises a device body (212), the interior of the device body (212) being divided into a bacterial strain interception area and a water storage tank (213), a water inlet pipe (202) being provided at the upper portion of the bacterial strain interception area, the water inlet pipe (202) being connected to a clear liquid outlet pipe (101) via a connecting pipe (204), a bacterial strain recovery component being provided at the lower portion of the bacterial strain interception area and being connected to a cyclone separator (300), and a bacterial strain recovery component being provided at the lower portion of the bacterial strain interception area and being connected to a cyclone separator (300). The outlet water of the settler (100) enters the bacteria interception area of ​​the device body (212) through the water inlet pipe (202), and the intercepted bacteria are discharged from the lower part of the bacteria interception area, and the upper clear liquid enters the water storage tank (213); the lower part of the water storage tank (213) is provided with a water outlet (208), and the water outlet (208) is connected to the water outlet pump (201) through a pipe, and the upper part of the water storage tank (213) is provided with an overflow pipe (209).

7. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 6, characterized in that: The bacterial strain interception zone is provided with a floating bacteria recovery baffle (205), a submerged bacteria baffle (206) and a water outlet baffle (207) in sequence. The water outlet baffle (207) is close to the water storage tank (213), and the floating bacteria recovery baffle (205) is close to the side wall of the device body (212). The water inlet pipe (202) is located between the floating bacteria recovery baffle (205) and the submerged bacteria baffle (206). A floating bacteria recovery channel is formed between the floating bacteria recovery baffle (205) and the side wall of the device body (212). A submerged bacteria recovery channel is formed between the floating bacteria recovery baffle (205) and the submerged bacteria baffle (206). An upper clear liquid flow channel is formed between the submerged bacteria baffle (206) and the water outlet baffle (207). The bottom of the floating bacteria recovery channel and the bottom of the submerged bacteria recovery channel are both connected to the bacterial strain recovery component, and the bottom of the floating bacteria recovery channel and the bottom of the submerged bacteria recovery channel are separated and opened.

8. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 7, characterized in that: The bacterial strain recovery component comprises a bacterial strain recovery pump (203) and a recovery pipe (214); the output port of the recovery pipe (214) is connected to the cyclone separator (300) through the bacterial strain recovery pump (203); the input port of the recovery pipe (214) is connected to the bottom of the floating bacteria recovery channel and the bottom of the settled bacteria recovery channel respectively; a floating bacteria recovery valve (211) is provided between the recovery pipe (214) and the floating bacteria recovery channel; a settled bacteria recovery valve (210) is provided between the recovery pipe (214) and the settled bacteria recovery channel; the settled bacteria recovery valve (210) and the floating bacteria recovery valve (211) are opened at intervals.

9. The separation, interception and recovery device for continuous flow granular bacteria according to claim 8, characterized in that: The top of the cyclone separator (300) is provided with a bacteria outlet (301), the bottom of the cyclone separator (300) is provided with a bacteria recovery port (302), and a cutting pump (303) is provided on the connecting pipeline between the cyclone separator (300) and the bacteria recovery pump (203); the cutting pump (303) crushes the anaerobic ammonium oxidizing bacteria and then sends them into the cyclone separator (300) for separation, impurities are discharged through the bacteria outlet (301), and the anaerobic ammonium oxidizing bacteria are returned to the anaerobic ammonium oxidation reactor through the bacteria recovery port (302).

10. The separation, interception and recovery equipment for continuous flow granular bacteria according to claim 9, characterized in that: The submerged bacteria recovery valve (210), the floating bacteria recovery valve (211), the bacteria recovery pump (203) and the cutting pump (303) are all connected to the PLC controller to realize automatic recovery of anaerobic ammonia-oxidizing bacteria.

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