Purification system and purification method thereof

Abstract

The invention relates to a purification system. The purification system comprises a culture unit and a delivery unit, each culture unit comprises a culture box body and a culture carrier, the culture box body comprises an enclosure net and a frame which is connected horizontally and vertically, the enclosure net is fixed in the frame and encloses a culture space in the frame, only water and gas circulate in the culture space, and the culture carrier is arranged in the culture space; the culture unit further comprises an aeration device, and the aeration device is arranged at the bottom of the culture unit and aerates towards the culture space; the delivery unit at least comprises a hoisting crane, and the hoisting crane is used for delivering the culture unit to a specified position in the pond; in the direction from the water inlet to the water outlet, the number of the culture carriers loaded in the culture box body is gradually increased, and the aeration quantity of the aeration device is gradually reduced.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, in particular to a biological pool sewage purification system. Background Art

[0002] In the water industry, MBBR (moving bed biofilm reactor) technology in sewage treatment technology is an important treatment solution. It combines the activated sludge method and the biofilm method to treat sewage through biological fillers suspended in the reactor. Due to its high-efficiency treatment capacity, small footprint, low energy consumption and strong adaptability to load fluctuations, it can effectively treat municipal and industrial wastewater. In the upgrading and transformation of urban sewage treatment plants, there is no need for large-scale expansion. By adding suspended fillers to increase the amount of microorganisms, the removal rate of nitrogen and phosphorus can be significantly improved, and the transformation cost can be reduced. In industrial wastewater treatment, MBBR technology is widely used in the treatment of high-organic concentration wastewater and wastewater containing toxic substances in the chemical, food processing, pharmaceutical, textile and other industries.

[0003] In actual operation, an interception device is installed at the outlet of the MBBR system to prevent the loss of suspended biological fillers. However, there are problems such as local accumulation of fillers at the end of the outlet, which leads to system blockage, excessive growth of biofilm, insufficient dissolved oxygen, and unstable ammonia nitrogen removal effect, which affect the sewage treatment efficiency and the stable operation of the system.

[0004] In today's era, environmental protection standards in the water industry are getting higher and higher, and nitrogen and phosphorus removal indicators are also rising. It is imperative to improve the MBBR system. Summary of the invention

[0005] In order to solve the above problems, a purification system is provided, and the technical solution provided is as follows, including a cultivation unit and a delivery unit;

[0006] The culture unit includes a culture box and a culture carrier. The culture box includes an enclosure net and a frame connected horizontally and vertically. The enclosure net is fixed in the frame, and a culture space is enclosed in the frame for only water and air circulation. The culture carrier is installed in the culture space. The culture unit also includes an aeration device, which is arranged at the bottom of the culture unit and aerates the culture space.

[0007] The delivery unit at least includes a lifting crane, which is used to deliver the culture unit to a designated position in the pool;

[0008] From the water inlet to the water outlet, the number of culture carriers loaded in the culture box gradually increases, while the aeration volume of the aeration device gradually decreases.

[0009] On the basis of the above technical solution, the delivery unit further includes a conveying device, which is arranged at the bottom of the pool. The conveying device includes a track and a driving mechanism. The culture box body is driven by the driving mechanism to slide on the track.

[0010] On the basis of the above technical solution, the driving mechanism is a chain transmission mechanism.

[0011] On the basis of the above technical solution, the driving mechanism is a chain conveyor.

[0012] On the basis of the above technical solution, the culture unit further includes a shuttle assembly, which includes a support seat, a main slide seat, an auxiliary slide seat, and a locking mechanism. The support seat is hollow in the middle, and the culture box body is detachably mounted on the edge of the support seat. The main and auxiliary slide seats are respectively arranged on the left and right sides of the support seat, and the locking mechanism is arranged on the auxiliary slide seat.

[0013] There are multiple locking mechanisms, which are installed in an array on the chain rod of the chain conveyor. The locking mechanism at least includes an electromagnetic suction cup and a magnetic attraction plate, and the magnetic attraction plate is arranged at the bottom of the auxiliary slide. There are multiple electromagnetic suction cups, which are arranged in an array on the chain rod of the chain conveyor. When the electromagnetic suction cup is working, the magnetic attraction plate is attracted by the magnetic attraction force and approaches the electromagnetic suction cup. When the magnetic attraction plate is adsorbed on the electromagnetic suction cup, the shuttle assembly is locked with the driving mechanism.

[0014] On the basis of the above technical solution, one end of the magnetically attracted plate is hinged to the auxiliary slide seat, and the other end is a free end;

[0015] The locking mechanism also includes a reset component, which includes a telescopic sleeve with a reset spring inside. One end of the telescopic sleeve is hinged on the auxiliary slide seat, and the other end is hinged to a position near the middle of the magnetically attracted plate.

[0016] On the basis of the above technical solution, a positioning unit is also included, which includes a gate bridge frame, a lifting part, and a bearing part. The gate bridge frame is multiple and is arranged on the left and right sides of the moving direction of the conveying device. The bottom of the gate bridge frame is fixed to the bottom of the pool, and the top extends out of the pool;

[0017] The bearing part includes a grab plate, a gripper, a power mechanism I, and a bearing frame. A slider A is provided on the edge of the bearing frame, and slides up and down in the gate bridge frame through the slider A; the lifting part is provided on the top of the gate bridge frame to drive the bearing frame to lift and lower; a rotation shaft I is provided between the sliders A on the left and right sides, the grab plate is fixed under the rotation shaft I, and the gripper is fixed on the grab plate; the power mechanism I is used to drive the rotation shaft I to rotate, drive the gripper to swing, and take and place the incubator through the gripper.

[0018] On the basis of the above technical solution, the locking mechanism also includes a clamp, a mounting seat, and a drawstring. The clamp is fixed on the chain rod of the chain rod conveyor, the mounting seat is arranged on the clamp, the mounting seat is threadedly connected to the electromagnetic suction cup, and a drawstring is clamped between the two. The two electromagnetic suction cups form a group, and the two ends of the drawstring are respectively connected to the two electromagnetic suction cups and the mounting seat of the same group.

[0019] The mounting seat and / or the clamping member are made of non-metallic non-magnetic material, and the drawstring is made of flexible material.

[0020] On the basis of the above technical solution, the delivery unit further includes a guiding device, which includes a lower frame, an upper frame, an electric slide rail mechanism, a rotating mechanism, and a rigging guiding mechanism;

[0021] One end of the lower frame is connected to the top of the gate bridge frame, and the other end is fixed to the pool wall near the top of the pool; the slide rail of the electric slide rail mechanism is arranged at the top of the lower frame, and the upper frame is arranged on the slider B of the electric slide rail mechanism; the upper frame is provided with a rotating mechanism, and the rotating mechanism at least includes a power mechanism II, a self-rotating shaft II, and a revolution support plate;

[0022] The revolution support plate is in the shape of the letter L, one end of which is fixedly mounted on the rotation shaft II, and the other end is connected to the rigging guide mechanism;

[0023] The rigging guide mechanism at least comprises a guide head, which is in a truncated cone shape and has a plurality of inwardly recessed guide grooves on its side wall, wherein the minimum width of the guide grooves is greater than the maximum width of the rigging.

[0024] On the basis of the above technical solution, the rigging guide mechanism also includes a dome-shaped cover body, which is made of soft material and is arranged on the top of the guide head and covers the guide head, but keeps the guide groove unobstructed up and down.

[0025] A method of using a purification system, comprising:

[0026] S1. According to the shape and size parameters of the water pool, the water pool is divided into L zone (area with a lower culture carrier filling rate), M zone (area with a higher culture carrier filling rate), and H zone (area with the highest culture carrier filling rate);

[0027] S2. Plan the number of incubators required in different areas, mark the areas on the incubator, and fill the culture space with an appropriate number of culture carriers according to the area markings;

[0028] S3. Use the delivery unit to deliver the incubator to the designated area;

[0029] S4. According to the different areas divided in step 1, the aeration device is controlled to provide different aeration amounts;

[0030] S5. Obtain ammonia nitrogen data in water. If the data does not meet expectations, execute step 6. If it meets expectations, the operation ends;

[0031] S6. According to the recycling of the culture box that does not meet the requirements, the specific surface area of ​​the culture carrier in the recycled culture box is adjusted, and the filling rate of the culture carrier in the culture box is changed, the aeration volume in the area where the culture box is located is increased, and the dissolved oxygen parameters are changed;

[0032] S7. When the ammonia nitrogen data meets expectations, the culture carrier specific surface area, filling rate and aeration volume parameters used in different areas of the pool are recorded. When the ammonia nitrogen data requirements are adjusted, the above parameters are also adjusted immediately.

[0033] Beneficial effects:

[0034] 1. A new biological pool structure is provided, which changes the method of directly placing the carrier of cultured microorganisms into the pool, intercepts the culture carrier in a certain space, restricts its flow in the pool, and avoids the problem of culture carriers accumulating at the outlet in traditional pools;

[0035] 2. Through the cooperation of fixed crane and conveying device, the whole treatment pool is fully covered, which can adapt to treatment pools of different sizes, large, medium and small, and also can adapt to treatment pools of unconventional shapes;

[0036] 3. The chain-type conveyor can reduce water flow resistance by utilizing its larger structural gap. At the same time, its simple structure and low cost can bring convenient maintenance and provide sustainable development;

[0037] 4. The incubator moves on the conveyor using a shuttle assembly, and the main and auxiliary slides and locking mechanisms ensure both stability during movement and reliability of long-term fixation on the bottom of the pool.

[0038] 5. The positioning unit solves the problem of inaccurate positioning when the incubator is deployed and recovered. When it is deployed, it can ensure that the incubator is connected to the drive mechanism as expected, and when it is recovered, it can lift the incubator out of the water, which greatly improves the deployment efficiency and reduces the downtime caused by maintenance issues.

[0039] 6. A guide device is specially added to the delivery unit to cooperate with the crane to recover the culture box, which solves the problem that traditional rigging is difficult to accurately hook the culture box in the air. The guide device can quickly achieve hooking, and even in the face of a large number of culture boxes, the recovery operation can be carried out efficiently;

[0040] 7. Based on the product structure and combined with its own practice, a set of practical solutions has been obtained. By adding culture carriers with different specific surface areas into the culture box body of each area divided in advance, the filling ratio of the culture carriers in different areas is controlled to ensure that the culture carriers are fully fluidized in the water and maintain good mass transfer and mixing effects; by controlling the aeration volume and dissolved oxygen concentration in sections, the dissolved oxygen gradient in the water and the biofilm on the culture carrier can be synergistically optimized to ensure the normal growth and activity of nitrifying bacteria and denitrifying bacteria. Nitrification and denitrification can be carried out simultaneously in the same reactor, nitrification is carried out in the aerobic zone to convert ammonia nitrogen into nitrate, and denitrification is carried out in the anoxic zone to convert nitrate into nitrogen gas, thereby achieving efficient removal of ammonia nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a top view schematic diagram of the basic structure of the culture box body of the present invention.

[0042] Figure 2 It is a front view schematic diagram of the basic structure of the culture box body of the present invention.

[0043] Figure 3 FIG. 1 is a schematic top view of a first embodiment of the present invention.

[0044] Figure 4 For the present invention Figure 3 A three-dimensional schematic diagram of .

[0045] Figure 5 FIG. 1 is a schematic top view of a second embodiment of the present invention.

[0046] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of .

[0047] Figure 7 It is a schematic top view of a culture box body with a shuttle assembly installed according to the second embodiment of the present invention.

[0048] Figure 8 For the present invention Figure 5 Schematic diagram of the main view.

[0049] Fig. 9 For the present invention Figure 8 A partial enlarged schematic diagram of .

[0050] Fig.10 FIG. 4 is a schematic side view of a locking mechanism according to a second embodiment of the present invention.

[0051] Fig.11 For the present invention Fig.10 AA cross-section diagram of .

[0052] Fig.12It is a perspective view of the exploded state of the incubator body with the shuttle assembly installed according to the second embodiment of the present invention.

[0053] Fig.13 It is a three-dimensional schematic diagram of a culture box body equipped with a shuttle assembly according to the second embodiment of the present invention.

[0054] Fig.14 It is a three-dimensional schematic diagram of the shuttle assembly and the conveying device in the second embodiment of the present invention in the state of use.

[0055] Fig.15 It is a partially enlarged schematic top view of a positioning unit according to a third embodiment of the present invention.

[0056] Fig.16 It is a three-dimensional schematic diagram of the positioning unit in use according to the third embodiment of the present invention.

[0057] Fig.17 It is a three-dimensional schematic diagram of an idle state of a positioning unit according to a third embodiment of the present invention.

[0058] Fig.18 It is a three-dimensional schematic diagram of the installation position of the guiding device according to the fourth embodiment of the present invention.

[0059] Fig.19 It is a three-dimensional schematic diagram of a guiding device according to a fourth embodiment of the present invention from a rear perspective.

[0060] Fig. 20 It is a three-dimensional schematic diagram of the use state of the guiding device of the fourth embodiment of the present invention.

[0061] Fig.21 FIG. 4 is a schematic top view of a rigging guide mechanism in use according to a fourth embodiment of the present invention.

[0062] Fig. 22 FIG. 4 is a schematic top view of the rigging guide mechanism of the fourth embodiment of the present invention in a turned-over state.

[0063] Fig.23 This is a diagram showing a regional decomposition example of the fifth embodiment of the present invention.

[0064] Fig.24 This is a diagram showing a regional decomposition example of the fifth embodiment of the present invention.

[0065] Fig.25 The bearing portion of the third embodiment of the present invention DETAILED DESCRIPTION

[0066] Embodiment 1.

[0067] This embodiment is designed to meet the increasingly stringent environmental protection requirements, reduce nitrogen and phosphorus, and improve water quality, which is an urgent problem that water conservancy personnel need to solve. This embodiment attempts to provide an optimized biological pool solution, which is a package solution to various problems existing in existing biological pools, and is also an exploration that combines practical problems with treatment experience. Figures 1 to 4 As shown, in this embodiment, the culture carrier carrying the microorganisms is no longer directly put into the pool, but loaded into the culture box 1. The main structures of the culture box 1 are a frame and an enclosure net 2. The frame is built as a foundation. The enclosure net 2 is enclosed on the basis of the frame to form a shape of a space for loading the culture carrier. The shape can be a geometric body or an irregular body similar to a bundle. If the enclosure net 2 does not have an opening for facilitating the replacement of the culture carrier, such as an elastic opening, it can be detachable from the frame; if the enclosure net 2 has an opening for replacing the culture carrier, it can be directly fixed on the frame without disassembly, and can be directly destroyed when replacing. Of course, a detachable design can still be adopted.

[0068] like Figure 2 As shown, the aeration pipeline originally arranged at the bottom of the pool needs to be modified in advance, and the aeration pipeline no longer needs to cover the entire bottom of the pool, nor does it need to be arranged at the original high density. In this embodiment, the aeration pipeline can be arranged in a focused manner according to the location of the culture unit to be placed, that is, it is focused on the bottom of the culture unit, which can save pipeline materials and maintenance costs.

[0069] like Figure 3 and Figure 4 As shown, multiple culture units are deployed in the pool and arranged in an array. Compared with the original free-floating culture carriers, the solution of this embodiment reduces a certain number of culture carriers. Due to the use of a multi-point centralized arrangement, the theoretical ammonia nitrogen removal effect is greatly improved. Figure 3 and Figure 4 , divide the culture units, further reduce the number of culture carriers, and improve the efficiency and effect of the culture carriers; for example, for a part of the culture units close to the water inlet, reduce the number of culture carriers loaded therein, as the part with less loading; for a part of the culture units close to the water outlet, increase the number of culture carriers on the basis of the part with less loading, as the part with more loading; the culture carriers between the two parts can be loaded with a normal number of culture carriers. Even in a small-sized pool, a culture unit with a hierarchical distribution can be formed. Accordingly, according to the division of different culture units in the pool, the aeration amount and dissolved oxygen concentration are adjusted. For example, in the part of the culture units with less loading near the water inlet, the aeration amount and dissolved oxygen concentration are increased, and gradually decrease from the water inlet to the water outlet.

[0070] Embodiment 2.

[0071] As described in the first embodiment, the culture unit can be lifted and placed at a designated location by a crane installed at the edge of the pool, but it is only applicable to small treatment pools and not suitable for large and medium-sized pools. The reason is that in large and medium-sized pools, whether it is an above-ground pool or an underground pool, it is impossible for the crane to completely cover the entire pool. Although the Track 4 carriage can be built along the edge of the pool and can also cross the pool, the construction cost and maintenance cost of the carriage are too high, and the most important thing is that it is inconvenient to maintain. In addition, depending on factors such as the terrain, the treatment pool is not always square in shape. If it is an above-ground pool, a curve carriage can be used, but an underground pool cannot be used due to limited space. The subordinate water conservancy units have complex situations and there are many pools with large sizes and different shapes. It is necessary to use a universal solution to solve the problem, so this embodiment was born.

[0072] In this embodiment, the conveying device is arranged at the bottom of the pool, the track 4 is used to constrain and guide the sliding direction of the culture box 1, and the driving mechanism 5 provides power for the sliding of the culture box 1. The track 4 and the culture box 1 can be connected in any feasible way, for example, the culture box 1 can be connected to the track 4 in an unfixed manner, in which case the track 4 only restricts and guides the movement trajectory of the culture box 1, and the culture box 1 can be separated from the track 4 by simply lifting it; the track 4 can also be connected in a fixed manner so that the track 4 and the culture box 1 can be separated under controlled conditions.

[0073] The driving mechanism 5 can adopt any feasible scheme, such as belt transmission, electric slide rail, etc. This embodiment and other embodiments adhere to the principle of minimizing underwater electronic equipment and adopt a chain transmission mechanism as the driving form, specifically, a chain rod conveyor is used to drive the culture box 1 to move underwater. Figures 5 to 8 As shown, Figure 5 The figure shows the common structure and size of the water supply ground treatment pool constructed in the early stage. There are still a certain number of ground treatment pools. The positions of the track 4 and the driving mechanism 5 of this embodiment are unchanged, and the conveying device needs to convey the culture box body 1 to the specified position and arrange the culture box body 1 in an array at the bottom of the pool. The conveying device needs to extend as much as possible and cover the bottom of the pool. Therefore, when the track 4 is on the outside, the bending radius of the chain conveyor is small; when the track 4 is on the inside, the bending radius of the chain conveyor is large, and the figure does not show the parts that the chain conveyor should have when bending, such as the tensioning bearing seat, the conveyor load-bearing frame, etc., which are deemed to exist in this embodiment and other embodiments to support the operation of the driving mechanism 5.

[0074] Figure 5The conveying mechanism shown in the figure, when the track 4 is on the inside and outside, will inevitably lead to the culture boxes 1 being grouped into two rows, with a certain interval between each group, and the interval distance being at least the bending diameter of the chain conveyor, so that it is easier to implement the scheme of dividing the culture units in the first embodiment. There are two reasons for choosing a chain conveyor. One is that it is a purely mechanical mechanism, which can arrange the power outside the pool away from the water surface, thereby reducing the number of underwater electronic components and increasing reliability and durability; the other is to reduce the obstruction of the chain 39 to the water flow. Since the chain distance of the chain conveyor is relatively large, it is easier for water to pass through, which can reduce the interference and obstruction to the fluidization state of the culture carrier in the pool. As shown in FIG. Figure 5 , Figure 6 and Figure 8 As shown, the aeration pipe and the microporous aerator of the aeration device 3 are arranged between the track 4 and the driving mechanism 5, and are arranged along the path of the conveying device. Compared with the traditional treatment tank, the material and scale of the aeration device 3 are greatly reduced. At the same time, the aeration device 3 aerates from the bottom of the culture box 1, and the aeration effect is not reduced.

[0075] In this embodiment, there is also a first preferred example, such as Figures 6 to 8 , Figure 12 to Figure 14 As shown, this embodiment provides a shuttle assembly to improve the culture unit. The support seat 6 is installed at the bottom of the frame of the culture box 1, and the support seat 6 does not contact the enclosure net 2. The main slide 7 is arranged on the side of the support seat 6 close to the track 4, as shown in FIG. Figure 8 As shown, it can be semi-enclosed on the track 4, or a roller 35 can be arranged under the main slide 7, and a slide groove 36 for the roller 35 to roll can be opened on the track 4. The auxiliary slide 8 is arranged on the side of the support seat 6 close to the driving mechanism 5, and the auxiliary slide 8 is mainly used to connect the driving mechanism 5, that is, the chain conveyor. Figure 8 As shown, when the electromagnetic suction cup 9 is energized, the magnetically attracted plate 10 of the locking mechanism approaches and absorbs the electromagnetic suction cup 9. When the driving mechanism 5 is working, the incubator 1 is transported to the designated location along the preset path of the conveying mechanism with the support of the shuttle assembly. In this preferred example, since the driving mechanism 5 bears load for a long time and is located underwater and is susceptible to erosion, a load-bearing platform 34 with a pulley is provided. The pulley can be directly welded with a strip of I-beam to replace the chain conveyor to bear the weight of the incubator 1. The load-bearing platform 34 can be arranged in an array near the chain conveyor. If a plurality of load-bearing platforms 34 are arranged in an array, the spacing between adjacent load-bearing platforms 34 is less than half the width of the support seat 6. In order to keep the drawings neat and concise, only the attached drawings are shown. Figure 8The load-bearing platform 34 is shown in the figure, and the other figures are omitted. On the basis of this preferred example, in order to enable the magnetically attracted plate 10 to be disengaged and reset more quickly from the electromagnetic suction cup 9 after power failure, a reset component is added on the basis of the shuttle component, which is mainly composed of a telescopic sleeve 11 and a reset spring. After power failure, the electromagnetic suction cup 9 loses its magnetic attraction, and the tension of the reset spring causes the telescopic sleeve 11 to contract, driving the magnetically attracted plate 10 to swing and keep a distance from the electromagnetic suction cup 9. When the electromagnetic suction cup 9 restores its magnetic attraction, it can still adsorb the magnetically attracted plate 10. When the two are magnetically connected, the reset spring is pulled to stretch the telescopic sleeve 11.

[0076] There is also a second preferred example in this embodiment. This preferred example improves the electromagnetic sucker 9 of the locking mechanism. Since the driving mechanism 5 needs to make a 180-degree turn, and the connecting piece between the electromagnetic sucker 9 and the driving mechanism 5 may be subjected to bending, extrusion force, etc. during the turn, the improvement of the electromagnetic sucker 9 in this preferred example is to add a mounting seat 21 made of non-metallic non-magnetic material. The electromagnetic sucker 9 is tightly fixed on one side of the mounting seat 21, and a clamp 20 is hinged on the other side. The clamp 20 can also be made of non-metallic non-magnetic material, but as long as it keeps a sufficient distance from the chain rod 39, it can still be made of metal. The clamp 20 is clamped on the chain rod 39 of the chain conveyor. A drawstring 22 is clamped between the mounting seat 21 and the electromagnetic sucker 9, and the two electromagnetic suckers 9 in the same group clamp the two ends of the same drawstring 22 respectively. The function of the drawstring 22 is to prevent the uncontrolled shaking of the two electromagnetic suckers 9 from hitting the driving mechanism 5. The purpose of forming a group of two electromagnetic suction cups 9 is to increase the range of magnetism underwater, increase the adsorption tolerance of the magnetic suction plate 10, and improve the success rate of locking. In this preferred example, there is also the problem of how to judge the position of the electromagnetic suction cup 9. According to the existing technical solution, it can be divided into two ways. One is to judge based on the experience of workers. The judgment is based on the chain conveyor that the power source can be arranged above the water surface or on the pool platform, and connected to the underwater chain conveyor through the transmission shaft. A mark can be made on the driving wheel of the power source and a reset direction can be determined. When the mark is aligned with the reset direction, it can be determined that a group of electromagnetic suction cups 9 are in place underwater and their position can be known; the second is to install a position sensor with waterproof and anti-corrosion properties at a specified position where the culture box body 1 is put into the water. When the electromagnetic suction cup 9 passes by the position sensor, a position signal is sent, thereby determining the position of the electromagnetic suction cup 9. After determining the position of the electromagnetic suction cup 9, the culture box 1 is dropped vertically from the water surface to the bottom of the pool. The magnetically attracted plate 10 of the locking mechanism is always in a position where it can magnetically connect to the electromagnetic suction cup 9 at any time. However, for the sake of safety, an underwater sensor is set at a certain position on the bottom of the pool, such as a position close to the middle or front part of the stroke of the driving mechanism 5, to detect whether the culture box 1 passes by, such as a laser sensor or other electronic products with good waterproof performance.

[0077] Each electromagnetic suction cup 9 is connected to only one chain rod 39 through a clamp 20, and the pull belt 22 is also made of soft material, which can ensure that the chain rod conveyor will not pull and damage any locking mechanism when bending downward or upward at a corner.

[0078] Embodiment three.

[0079] This embodiment is made on the basis of the second embodiment, and provides a solution for placing and recovering the culture box 1 without draining the pool water.

[0080] The specific usage principle of this embodiment is as follows:

[0081] 1. When it is necessary to put incubator 1

[0082] 1. Use the crane of the delivery unit to lift the culture box 1 to the top of the door bridge frame 13 of the positioning unit 12;

[0083] 2. Start the lifting part to drive the bearing frame 14 of the bearing part 38 to rise along the gate bridge frame 13, and stop when the bearing frame 14 rises to the top of the stroke;

[0084] 3. Operate the crane to align the culture box 1 with the load-bearing frame 14 and lift it in;

[0085] 4. When the culture box 1 passes through the carrying frame 14 from top to bottom, the culture box 1 continues to descend;

[0086] 5. When the support base 6 of the culture box 1 falls on the gripper 16, the crane stops and controls the rigging to separate from the culture box 1;

[0087] 6. Start the lifting part again to drive the carrying frame 14 down, and the gripper 16 of the gripper plate 15 under the carrying frame 14 holds the culture box 1 and immerses it in water;

[0088] 7. When the shuttle assembly of the culture box 1 contacts the conveying device, the electromagnetic suction cup 9 is activated and is attracted by the magnetic suction plate 10;

[0089] 8. Start the lifting unit again, driving the carrying frame 14 to descend slightly, so that the gripper 16 is out of contact with the support seat 6;

[0090] 9. Start the power mechanism I17 to drive the rotating shaft I18 to rotate, so that the gripping plate 15 and the gripping hand 16 swing to be parallel to the bottom of the pool;

[0091] 10. Finally, the lifting part is started to drive the supporting frame 14 to rise, and at the same time, the driving mechanism 5 is started to drive the culture box body 1 to slide along the track 4 and slide out from between the door bridge frames 13.

[0092] 2. When the incubator 1 needs to be recovered, the above steps of dispensing can be performed in reverse.

[0093] In this embodiment, the positioning unit 12 is designed to facilitate the use of a lifting crane to relatively accurately place the culture box 1 on the track 4, thereby achieving the placement of the culture box 1 without emptying the pool water. When not in use, the lifting part drives the supporting frame 14 to rise above the water surface, and can also start the power mechanism I17 to drive the rotation shaft I18 on the slider A19 to rotate, so that the grab plate 15 swings to be parallel to the water surface to avoid being soaked in water.

[0094] like Figures 15 to 17 As shown, the gate bridge frame 13 is fixed on the bottom of the pool near the starting point of the track 4. There are two gate bridge frames 13, which are respectively and relatively located on the outside of the track 4 and the chain-rod conveyor. The two gate bridge frames 13 are connected by a rack. The gate bridge frame 13 is in the shape of a door and is a frame structure. A plurality of beams are arranged in the middle of each gate bridge frame 13 to strengthen the structure. The two gate bridge frames 13 and the connected racks form a channel 37 with an opening at the top for the incubator 1 to be lifted and lowered. The lifting part is located at the top of the inner side of the gate bridge frame 13. It can adopt any scheme, such as heavy-duty electric slide rails, hydraulic lifting and other schemes. In this embodiment, an electric hoist can be used as a lifting part solution. Each gate bridge frame 13 is provided with an electric hoist (not shown), and the two electric hoists synchronously control the lifting of the load-bearing frame 14. In order to enable the load-bearing frame 14 to be lifted and lowered stably, a groove is provided on the gate bridge frame 13, and the slider A19 fixed to the load-bearing frame 14 can slide up and down in the groove to prevent the load-bearing frame 14 from swinging laterally when lifting and lowering.

[0095] In this embodiment, whether the incubator 1 is put in or recovered, the gripping plate 15 and the gripping hand 16 will be reset under the drive of the power mechanism Ⅰ17 after the operation is completed, that is, they will swing to an angle parallel to the water surface along with the self-rotating shaft Ⅰ18, and rise out of the water surface. There are two gripping plates 15 and two gripping hands 16, which are respectively located between the gate bridge frames 13. The shape and structure of the gripping hand 16 are similar to the fork of a forklift, and the structure of the gripping plate 15 is similar to the steel frame of a forklift. The gripping plate 15 can be regarded as a lifting mechanism or a lifting mechanism. In order to reduce the risk of the incubator 1 slipping off the gripping hand 16, an electromagnet can also be set on the gripping hand 16. When the gripping hand 16 contacts the support seat 6 of the incubator 1, the electromagnet is activated to adsorb the steel support seat 6.

[0096] Embodiment 4.

[0097] Based on the third embodiment, this embodiment provides a solution that enables the rigging of the lifting crane to quickly align with the lifting lug 40 of the culture box 1 and lift and recover it.

[0098] This embodiment cooperates closely with the lifting crane as a part of the delivery unit, and can recover the culture boxes 1 at the fastest speed when facing a large number of culture boxes 1.

[0099] like Figures 18 to 22 As shown, the specific method of use is as follows: ① When the gripper 16 of the positioning unit 12 lifts the culture box body 1 from the water and rises to the highest point of the stroke, start the lifting crane to lift the lifting rigging to the top of the culture box body 1; ② Start the electric slide mechanism 25, and the slider B27 drives the upper frame 24 to slide toward the opening channel 37 at the top of the gate bridge frame 13; ③ When the guide head 31 of the upper frame 24 is located just above the opening channel 37, the slider B27 stops moving; ④ Start the lifting crane again, and slowly lower the cable hook of the rigging. When the hook is about to contact the guide head 31, the hook's descending speed is further slowed down; ⑤ The hook and the cable are moved from the guide The side wall of the head 31 slowly slides into the guide groove 32. If part of the cable rigging still deviates from the guide groove 32, it can be manually corrected and manually guided to the guide groove 32; ⑥ When the cable is in the guide groove 32, the rigging can be lowered faster; ⑦ Under the guidance of the guide groove 32, the rigging can be connected to the incubator 1 relatively accurately; ⑧ After connecting the incubator 1, the gripper 16 still grasps the incubator 1, and the lifting crane is started to continue to release the cable, so that the cable is in a loose and relaxed state; ⑨ Start the power mechanism II 28 to drive the rotation shaft II 29 to rotate, and at the same time drive the revolution support plate 30 to rotate with the rotation shaft II 29 as the center, and rotate the guide head 31 to the position as shown in the figure. Fig. 20 90 degrees; ⑩ Since the cable is in a relaxed state at this time, there is no restraint on the guide head 31, and then the electric slide mechanism 25 is started, driving the upper frame 24 to reset, so that the guide head 31 returns to the initial position; The power mechanism II 28 is started again to drive the guide head 31 to rotate to a horizontal position and reset; Finally, the lifting crane is started to lift the culture box 1 out of the positioning unit 12 .

[0100] In this embodiment, the lower frame 23 can be arranged on any side of the front, back, left, or right of the portal bridge frame 13. Fig.18 As shown, in order to reduce the pressure on the portal bridge frame 13 and increase the maintenance convenience of the guiding device, the lower frame 23 of the guiding device is arranged on a side close to the pool platform, so that the slide rail 26 of the electric slide rail mechanism 25 can be directly set on the solid ground, and the workers can operate and maintain by standing on the pool platform without going down to the bottom or wall of the pool.

[0101] In this embodiment, the guide head 31 is in the shape of a truncated cone. It can also be in other similar shapes, such as a cone, a water drop shape, or other similar shapes with sharp ends. The purpose is to dredge and guide the rigging, avoid entanglement and swinging, etc., and speed up the recovery speed. The purpose of using the truncated cone shape is that the height of the truncated cone structure is relatively short. When it rotates under the drive of the power mechanism II 28, it can better avoid being bound by the cable and reset more conveniently. If a truncated cone shape is adopted, a dome-shaped cover 33 can also be set above the truncated cone. The cover 33 and the truncated cone can be connected in a detachable manner. The purpose is to reduce the direct impact of the rigging on the truncated cone and facilitate replacement when damaged. At the same time, the cover 33 structure is not a solid structure, which can reduce weight.

[0102] Embodiment five.

[0103] This embodiment provides a method for using the purification system, which can enable the culture carrier to form an effective oxygen gradient and microbial environment difference, achieve simultaneous nitrification and denitrification, and ensure the long-term stable operation of the MBBR system and the high efficiency of sewage treatment.

[0104] like Fig.23 As shown in the figure, a medium-sized treatment pool is shown, and the treatment pool is divided into regions. The dotted line is divided into L zone (the region with a low culture carrier filling rate) due to its proximity to the water inlet. The higher culture carrier filling rate in M ​​zone is described relative to L zone. H zone is close to the water outlet, and the culture carrier filling rate in this region is the highest. After the regions are divided, the number of culture boxes 1 to be deployed in different regions is determined based on the space in the region, the condition of the drive mechanism 5, and whether there is interference from other facilities at the bottom of the pool. For example, when the drive mechanism 5 turns, does it bend downward or upward? Fig.23 As shown, due to the need to lay out an aeration pipe between the track 4 and the chain conveyor, the spacing between the track 4 and the chain conveyor must be kept consistent. When the chain conveyor bends downward, due to the advantages of the belt conveyor structure, its turning radius is small when it bends itself, and the number of culture boxes 1 that can be accommodated at the bend is small; and when the chain conveyor bends upward, even if the turning radius of the track 4 remains unchanged, the turning radius of the chain conveyor at the same center of the track 4 will inevitably increase, and the number of culture boxes 1 that can be arranged on the bend will be greater. Therefore, it is necessary to calculate the number of culture boxes 1 required for different areas, and then make regional marks on the culture boxes 1, for example, the culture boxes 1 that need to be placed in the L area are marked with "L".

[0105] The culture boxes 1 to be deployed in different areas have different culture carriers. For example, to meet the environmental protection index X, the specific surface area of ​​the culture box 1 in area L needs to be less than 100㎡-500㎡ / m 3The culture carrier has a filling rate of 5%-15%; the specific surface area of ​​the culture box 1 in the M area is 500㎡-800㎡ / m 3 The culture carrier has a filling rate of 15%-25%; the specific surface area of ​​the culture box 1 in the H area is 800㎡-1000㎡ / m 3 The culture carrier has a filling rate of 25%-35%. Accordingly, the aeration volume of the aeration device 3 is adjusted from the L area to the H area as a whole. For example, when it is still to meet the environmental protection index X, the aeration volume is adjusted from the L area to a theoretical dissolved oxygen of about 2.0-2.5 mg / L, and the aeration volume of the H area is adjusted to a theoretical dissolved oxygen of about 1.0-2.0 mg / L, and the dissolved oxygen between the L area and the H area is ensured to be smoothly transitioned. In extreme cases, the M area can directly adopt the intermediate value of 2.0 mg / L. By controlling the aeration volume, the specific surface area and the filling rate of the culture carrier in stages, the dissolved oxygen gradient in the water and the culture carrier biofilm is synergistically optimized, nitrification is carried out in the aerobic zone to convert ammonia nitrogen into nitrate, and denitrification is carried out in the anoxic zone to convert nitrate into nitrogen gas, so as to achieve efficient removal of ammonia nitrogen, enable normal growth of different microorganisms, maintain good mass transfer and mixing effects, and solve the problems of local accumulation of fillers at the outlet end leading to system blockage, excessive growth of biofilm, insufficient dissolved oxygen, and unstable ammonia nitrogen removal effect.

[0106] After the incubator 1 is placed, it is necessary to continue the detection for a certain period of time to obtain the ammonia nitrogen data. If the data does not meet the standard, it can be readjusted. The recovery operation is performed through the first to fourth embodiments, making the whole set of equipment highly operable. If the current measures meet the environmental protection indicators, the adjusted aeration volume, specific surface area, filling rate and other parameters are recorded and entered into the database. When the indicators are adjusted, only the parameters need to be fine-tuned to meet the requirements, reducing the burden on workers and providing a basis for realizing intelligent production in the future.

Claims

1. A purification system, characterized in that: It includes a cultivation unit and a delivery unit; The culture unit includes a culture box and a culture carrier. The culture box includes an enclosure net and a frame connected horizontally and vertically. The enclosure net is fixed in the frame, and a culture space is enclosed in the frame for only water and air circulation. The culture carrier is installed in the culture space. The culture unit also includes an aeration device, which is arranged at the bottom of the culture unit and aerates the culture space. The delivery unit at least includes a lifting crane, which is used to deliver the culture unit to a designated position in the pool; From the water inlet to the water outlet, the number of culture carriers loaded in the culture box gradually increases, while the aeration volume of the aeration device gradually decreases.

2. The purification system according to claim 1, characterized in that: The delivery unit also includes a conveying device, which is arranged at the bottom of the pool. The conveying device includes a track and a driving mechanism. The culture box body is driven by the driving mechanism to slide on the track.

3. The purification system according to claim 1, characterized in that: The driving mechanism is a chain transmission mechanism.

4. The purification system according to claim 1, characterized in that: The driving mechanism is a chain conveyor.

5. The purification system according to claim 1, characterized in that: The culture unit also includes a shuttle assembly, which includes a support seat, a main slide seat, an auxiliary slide seat, and a locking mechanism. The support seat is hollow in the middle, and the culture box body is detachably mounted on the edge of the support seat. The main and auxiliary slide seats are respectively arranged on the left and right sides of the support seat, and the locking mechanism is arranged on the auxiliary slide seat. There are multiple locking mechanisms, which are installed in an array on the chain rod of the chain conveyor. The locking mechanism at least includes an electromagnetic suction cup and a magnetic attraction plate, and the magnetic attraction plate is arranged at the bottom of the auxiliary slide. There are multiple electromagnetic suction cups, which are arranged in an array on the chain rod of the chain conveyor. When the electromagnetic suction cup is working, the magnetic attraction plate is attracted by the magnetic attraction force and approaches the electromagnetic suction cup. When the magnetic attraction plate is adsorbed on the electromagnetic suction cup, the shuttle assembly is locked with the driving mechanism.

6. The purification system according to claim 1, characterized in that: One end of the magnetically attracted plate is hinged to the auxiliary slide, and the other end is a free end; The locking mechanism also includes a reset component, which includes a telescopic sleeve with a reset spring inside. One end of the telescopic sleeve is hinged on the auxiliary slide seat, and the other end is hinged to a position near the middle of the magnetically attracted plate.

7. The purification system according to claim 1, characterized in that: It also includes a positioning unit, which includes a gate bridge frame, a lifting part, and a bearing part. The gate bridge frames are multiple and are arranged on the left and right sides of the moving direction of the conveying device. The bottom of the gate bridge frame is fixed to the bottom of the pool, and the top extends out of the pool. The bearing part includes a grab plate, a gripper, a power mechanism I, and a bearing frame. A slider A is provided on the edge of the bearing frame, and slides up and down in the gate bridge frame through the slider A; the lifting part is provided on the top of the gate bridge frame to drive the bearing frame to lift and lower; a rotation shaft I is provided between the sliders A on the left and right sides, the grab plate is fixed under the rotation shaft I, and the gripper is fixed on the grab plate; the power mechanism I is used to drive the rotation shaft I to rotate, drive the gripper to swing, and take and place the incubator through the gripper.

8. The purification system according to claim 1, characterized in that: The locking mechanism also includes a clamp, a mounting seat, and a drawstring. The clamp is sleeved on the chain rod of the chain rod conveyor, the mounting seat is arranged on the clamp, the mounting seat is threadedly connected to the electromagnetic suction cup, and a drawstring is clamped between the two. The two electromagnetic suction cups form a group, and the two ends of the drawstring are respectively connected to the two electromagnetic suction cups and the mounting seat of the same group. The mounting seat and / or the clamping member are made of non-metallic non-magnetic material, and the drawstring is made of flexible material.

9. The purification system according to claim 1, characterized in that: The delivery unit also includes a guiding device, which includes a lower frame, an upper frame, an electric slide mechanism, a rotating mechanism, and a rigging guiding mechanism; One end of the lower frame is connected to the top of the gate bridge frame, and the other end is fixed to the pool wall near the top of the pool; the slide rail of the electric slide rail mechanism is arranged at the top of the lower frame, and the upper frame is arranged on the slider B of the electric slide rail mechanism; the upper frame is provided with a rotating mechanism, and the rotating mechanism at least includes a power mechanism II, a self-rotating shaft II, and a revolution support plate; The revolution support plate is in the shape of the letter L, one end of which is fixedly mounted on the rotation shaft II, and the other end is connected to the rigging guide mechanism; The rigging guide mechanism at least comprises a guide head, which is in a truncated cone shape and has a plurality of inwardly recessed guide grooves on its side wall, wherein the minimum width of the guide grooves is greater than the maximum width of the rigging.

10. The purification system according to claim 1, characterized in that: The rigging guide mechanism also includes a dome-shaped cover body, which is made of soft material and is arranged on the top of the guide head and covers the guide head, but keeps the guide groove unobstructed up and down.

11. Purification methods using purification systems, including: S1. According to the shape and size parameters of the water pool, the water pool is divided into L zone (area with a lower culture carrier filling rate), M zone (area with a higher culture carrier filling rate), and H zone (area with the highest culture carrier filling rate); S2. Plan the number of incubators required in different areas, mark the areas on the incubator, and fill the culture space with an appropriate number of culture carriers according to the area markings; S3. Use the delivery unit to deliver the incubator to the designated area; S4. According to the different areas divided in step 1, the aeration device is controlled to provide different aeration amounts; S5. Obtain ammonia nitrogen data in water. If the data does not meet expectations, execute step 6. If it meets expectations, the operation ends; S6. According to the recycling of the culture box that does not meet the requirements, the specific surface area of ​​the culture carrier in the recycled culture box is adjusted, and the filling rate of the culture carrier in the culture box is changed, the aeration volume in the area where the culture box is located is increased, and the dissolved oxygen parameters are changed; S7. When the ammonia nitrogen data meets expectations, the culture carrier specific surface area, filling rate and aeration volume parameters used in different areas of the pool are recorded. When the ammonia nitrogen data requirements are adjusted, the above parameters are also adjusted immediately.

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