Track-based in-situ purification method for sewer pipes

Abstract

The present invention proposes a track-type in-situ purification method for drainage pipes, wherein a chain-type track is installed in an inspection well and a drainage pipe, a suspension bracket is suspended on the chain-type track, a processing unit is nested in the suspension bracket, an active sprocket is driven by an electric motor to rotate, and then a transmission chain is transmitted, so that the suspension bracket is transported to the inside of the drainage pipe, and an auxiliary unit is arranged on the ground outside the inspection well to assist the processing unit in in-situ purification of the drainage pipe. The present invention makes full use of the internal space of the inspection well and the drainage pipe, realizes the transportation and placement of the processing unit in the drainage pipe through the ingenious design of the chain-type track and the suspension bracket, and realizes the in-situ water purification, disinfection and sterilization, and dredging of the drainage pipe through the flexible combination of the processing unit and the auxiliary unit. Compared with the prior art, the present invention has the outstanding features of strong applicability, easy implementation, diverse functions, flexible operation, and significant effect.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal drainage, and in particular relates to a track-type in-situ purification method for a drainage pipe. Background Art

[0002] Drainage pipes are engineering facilities that collect and transport urban domestic sewage, industrial wastewater and rainwater. In recent years, with the acceleration of my country's urbanization process, the number and scale of drainage pipe construction have also increased year by year. The increasingly improved drainage pipe system has provided convenience for the transportation of various types of sewage and rainwater in cities and towns. However, as the drainage pipe system becomes increasingly large, problems such as water pollution and secondary disasters in drainage pipes have gradually become prominent.

[0003] These problems mainly manifest in the following aspects: 1) Harmful microorganisms (such as iron bacteria and sulfur bacteria) that breed in drainage pipes can easily cause corrosion and blockage of pipes and related equipment; 2) Anaerobic hydrolysis of organic polluted wastewater in drainage pipes can produce a large amount of toxic, flammable and explosive gases (such as carbon monoxide (CO) and hydrogen sulfide (H2S)), which can cause poisoning or explode when exposed to open flames when accumulated to a certain extent; 3) Drainage pipes or inspection wells are prone to breeding mosquitoes, flies, cockroaches and other vectors, which are harmful to human health; 4) If the drainage pipes are not cleared for a long time, the scum or sediment in the pipes will easily block the pipes and affect normal drainage; 5) The drainage pipes lack an oxygen-rich environment and aerobic microorganisms, causing the sewage to become black and smelly and a large amount of odor to escape from the inspection wells, irritating the senses of citizens.

[0004] Faced with the above problems, the existing urban drainage pipe system in my country still only has the ability to transport water but does not have the function of water purification. Moreover, since the transportation end point of the drainage pipe is often the urban sewage treatment plant or natural water body, if the internal space of the drainage pipe can be fully utilized to carry out in-situ water purification, disinfection and sterilization or dredging and desilting, it will greatly alleviate the pollution load of the urban sewage treatment plant or natural water body, thereby improving the water pollution control capacity and water environment management level. Therefore, the market urgently needs a new technology that can purify the drainage pipe in situ. Summary of the invention

[0005] The purpose of the present invention is to provide a track-type in-situ purification system for drainage pipes. By implementing appropriate engineering modifications to the drainage pipes and inspection wells, the internal space of the drainage pipes is fully utilized, and various treatment units are transported to the interior of the drainage pipes through the design of chain-type tracks and hanging brackets, thereby achieving in-situ water purification, disinfection and sterilization or dredging and desilting of the drainage pipes.

[0006] To achieve the above object, the present invention proposes a track-type in-situ purification method for drainage pipes, characterized in that the method comprises:

[0007] Installation Phase

[0008] Step 1: Drain the sewage in the drainage pipe in advance so that operators can enter the inspection well for operation;

[0009] Step 2: Install a chain track in the inspection well, the chain track includes a driving sprocket, a driven pulley and a chain matched therewith;

[0010] Step 3: Fix the hanging bracket on the chain;

[0011] Step 4: Install the processing unit on the hanging bracket, and install the corresponding auxiliary unit, which is used to power the processing unit and monitor its operation in real time;

[0012] Step 5: The motor drives the active sprocket to rotate, and then drives the chain, so as to transport the hanging bracket to the inside of the drainage pipe;

[0013] Step 6: The drainage pipe is flowing with water normally;

[0014] Operation phase:

[0015] Step 1: Turn on the processing unit and its auxiliary units;

[0016] Step 2: The treatment unit achieves in-situ purification of the drainage pipe through its mechanism of action.

[0017] Furthermore, the method also includes an overhaul phase, which specifically includes the following steps:

[0018] Step 1: The driving sprocket is rotated in the reverse direction by the motor, so that the processing unit to be repaired is transported to the top of the inspection well along with the chain;

[0019] Step 2: Remove the processing unit from the hanging bracket, and inspect and clean the processing unit;

[0020] Step 3: Re-fix the processing unit on the hanging bracket, and use the motor to rotate the driving sprocket, so that the repaired processing unit is transported to the drainage pipe along the chain, and finally start the processing unit and its auxiliary units.

[0021] Furthermore, the chain track includes a supporting frame, the supporting frame and the side wall of the inspection well are provided with fixed nodes, the supporting frame is equipped with a driving sprocket, a driven pulley and a chain matched therewith, the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe, the motor is connected to the driving sprocket to drive the driving sprocket to rotate, thereby driving the chain to move, the driven pulley is provided with a wheel groove, the chain groove of the chain is engaged with the wheel teeth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley; the installation method of the chain track is one of the following two methods:

[0022] First, the supporting frame, fixed nodes, frame base, driving sprocket and driven pulley are all installed in the inspection well, so that the chain has a double-strand U-shaped structure;

[0023] Secondly, a part of the supporting frame and the driving sprocket are installed above the detection well, and the fixed node, the frame base and the driven pulley are installed in the detection well, so that the roller chain has a single-strand mouth structure.

[0024] Preferably, the driving sprocket is located at the top of the supporting frame, and the driven pulley is located at the bottom of the supporting frame; the tooth pitch of the driving sprocket is 1-15 cm, and the tooth thickness is 0.5-10 cm; the wheel groove width of the driven pulley is 2-8 cm, and the wheel groove depth is 4-12 cm; the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe.

[0025] Preferably, the suspended bracket includes a frame body and a hook connected to the frame body, the hook passes through the pin of the chain, thereby connecting the frame body to the chain, and the cross-sectional diameter of the hook is smaller than the depth of the wheel groove of the driven pulley, thereby ensuring that when the pin of the roller chain connected to the hook passes through the wheel groove of the driven pulley, the hook will contact the wheel groove of the driven pulley, but will not cause the roller chain to collide with the wheel groove of the driven pulley, thereby enabling the suspended bracket to pass smoothly at the driven pulley.

[0026] Preferably, the number of hooks on the frame body is 1 or 2. When two hooks are provided on the frame body, the axial displacement of the hanging bracket in the drainage pipe can be limited.

[0027] Preferably, the upper portion of the hook is a hook-shaped object, and the lower portion is a connecting rod connected to the frame body. The connecting rod needs to have a certain length so that the hanging bracket can smoothly pass through the right-angle bend when moving with the chain.

[0028] Preferably, the hanging bracket includes a counterweight; the counterweight is located at the bottom of the bracket body and is used to increase the weight of the bracket body so that the hanging bracket does not shake violently in the drainage pipe.

[0029] Preferably, double-sided telescopic rods are provided on both sides of the frame body, and the ends of the double-sided telescopic rods have universal wheels. The telescopic direction of the double-sided telescopic rods is perpendicular to the axis of the drainage pipe, which is used to limit the lateral displacement of the hanging bracket in the drainage pipe.

[0030] Preferably, the frame body is in the shape of a star fork, rectangle, disc, column frame, stacked frame, cylinder, I-beam, straight rod and round arch, and is made of SS316L, SS304, UPVC, PVC and ceramic.

[0031] Preferably, a reserved part is provided on the surface of the frame body for connecting the processing unit to the frame body; the reserved part is in the form of a slot, a slot, a strap, a buckle or a barb, and is made of SS316L, SS304, UPVC, PVC, ceramic, nylon or polyester.

[0032] Preferably, a counterweight is provided at the bottom of the frame body to increase the weight of the frame body so that the hanging bracket does not shake violently in the drainage pipe.

[0033] Preferably, the hanging bracket includes a double-sided telescopic rod, and the ends of the double-sided telescopic rods have elastic telescopic rods with universal wheels, which are located on both sides of the frame body. The telescopic direction is perpendicular to the axis of the drainage pipe, and is used to limit the lateral displacement of the hanging bracket in the drainage pipe.

[0034] Furthermore, the processing unit includes one or more of an ultraviolet photolyzer, a photocatalytic reactor, an ultrasonic generator, an electrolysis device, a low-temperature plasma generator, a high-pressure water gun, a scraper, a sustained-release preparation delivery component and a biofilm component; corresponding to the processing unit, the auxiliary units are one or more of an ultraviolet sensing probe, a light sensing probe, a high-frequency AC power supply, a DC regulated power supply, a high-voltage pulse power supply, a high-voltage plunger pump, a mud collection truck, a sustained-release preparation processing room, and an aeration head.

[0035] The present invention makes full use of the internal space of the drainage pipe, and realizes the placement and maintenance of the treatment unit in the drainage pipe through the ingenious design of the chain track and the hanging bracket, and realizes the in-situ purification, disinfection, sterilization and dredging of sewage of different properties in the drainage pipe through the flexible combination of the treatment unit and the auxiliary units.

[0036] Compared with the prior art in the same field, the present invention has the following notable features:

[0037] 1. Strong applicability

[0038] Aiming at the problem of in-situ purification of drainage pipes, the system can adapt to the in-situ purification of different forms of drainage pipes through the reasonable layout of chain tracks, hanging brackets, processing units and auxiliary units.

[0039] 2. Easy to implement

[0040] Make full use of the existing space of inspection wells and drainage pipes for simple renovation, with fewer engineering measures, small investment scale, and easy implementation and promotion.

[0041] 3. Diverse functions:

[0042] Treatment units and their auxiliary units with different structures and functions can be selected individually according to the specific conditions of the drainage pipe and the treatment requirements, or they can be selected in combination. The method has a wide range of applications.

[0043] 4. Flexible operation:

[0044] Through the design of chain track and hanging bracket, the processing unit can be easily transported from the top of the inspection well to the inside of the drainage pipe when the system is started, and the processing unit can be easily transported from the inside of the drainage pipe to the outside of the inspection well during maintenance.

[0045] 5. Significant results

[0046] The system uses a variety of purification mechanisms in the processing units to purify water, disinfect, sterilize, and dredge the drainage pipes. It is highly targeted, effective, and highly profitable. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a front view of the track-type in-situ purification system for drainage pipes of the present invention (the chain-type track is installed in a "U-shaped" structure).

[0048] Figure 2 This is a front view of the track-type in-situ purification system for drainage pipes of the present invention (the chain-type track is installed in a "mouth-shaped" structure).

[0049] Figure 3 This is the front view of the chain track in the system of the present invention (the chain track is installed in a "U-shaped" structure).

[0050] Figure 4 This is the front view of the chain track in the system of the present invention (the chain track is installed in a "mouth-shaped" structure).

[0051] Figure 5 It is a front view of a hanging bracket in which an ultraviolet photolyzer is embedded in the system of the present invention.

[0052] Figure 6 for Figure 5 Side view of.

[0053] Figure 7 It is a front view of a hanging bracket in which a photocatalytic reactor is nested in the system of the present invention.

[0054] Figure 8 for Figure 7 Side view of.

[0055] Fig. 9 It is a front view of a hanging bracket in which an ultrasonic generator is embedded in the system of the present invention.

[0056] Fig.10 for Fig. 9 Side view of.

[0057] Fig.11 It is a front view of a hanging bracket in which an electrolysis device is embedded in the system of the present invention.

[0058] Fig.12 for Fig.11 Side view of.

[0059] Fig.13 The front view of the suspended bracket in which the low-temperature plasma generator is embedded in the system of the present invention.

[0060] Fig.14 for Fig.13 Side view of.

[0061] Fig.15 It is a front view of a hanging bracket in which a high-pressure water gun is embedded in the system of the present invention.

[0062] Fig.16 for Fig.15 Side view of.

[0063] Fig.17 It is a front view of a hanging bracket in which a scraper and mud scraper are embedded in the system of the present invention.

[0064] Fig.18 for Fig.17 Side view of.

[0065] Fig.19 It is a front view of the hanging bracket in which the sustained-release preparation delivery component is nested in the system of the present invention.

[0066] Fig. 20 for Fig.19 Side view of.

[0067] Fig.21 It is a front view of the hanging bracket in which the biofilm assembly is nested in the system of the present invention.

[0068] Fig. 22 for Fig.21 Side view of.

[0069] Figures 1 to 13 The numbers in mean:

[0070] 1 - chain track, 11 - supporting frame, 12 - fixed node, 13 - frame base, 14 - driving sprocket, 15 - driven pulley, 16 - roller chain, 17 - motor;

[0071] 2 - hanging bracket, 21 - hook, 22 - frame, 23 - reserved part, 24 - counterweight, 25 - lateral telescopic wheel;

[0072] 3 - treatment unit, 31 - ultraviolet photolyzer, 32 - photocatalytic reactor, 33 - ultrasonic generator, 34 - electrolysis device, 35 - low-temperature plasma generator, 36 - high-pressure water gun, 37 - scraper, 38 - sustained-release preparation delivery component, 39 - biofilm component;

[0073] 4 - accessory unit, 41 - UV sensor probe, 42 - light sensor probe, 49 - aeration head;

[0074] 5 - Ground;

[0075] 6 - detection well;

[0076] 7 - Sewage;

[0077] 8 - Drainage pipes. DETAILED DESCRIPTION

[0078] The invention is further described in detail with reference to the following specific embodiments and drawings. The process, conditions, experimental methods, etc. for implementing the present invention, except for the contents specifically mentioned below, are all common knowledge and common common sense in the art and are not particularly limited by the present invention.

[0079] A track-type in-situ purification system for drainage pipes is composed of a chain track 1, a hanging bracket 2, a processing unit 3 and an auxiliary unit 4; the chain track 1 is installed in an inspection well 6 and a drainage pipe 8, the hanging bracket 2 is hung on the chain track 1, the processing unit 3 is nested in the hanging bracket 2, and the auxiliary unit 4 is used to provide supporting services for the processing unit 3.

[0080] The chain track 1 is composed of a supporting frame 11, a fixed node 12, a frame base 13, a driving sprocket 14, a driven pulley 15, a roller chain 16 and a motor 17; wherein the supporting frame 11 is a modular frame prefabricated according to the size of the inspection well, the fixed node 12 is the connection point between the supporting frame 11 and the side wall of the inspection well 6, the frame base 13 is placed at the bottom of the inspection well 6, the wheel surfaces of the driving sprocket 14 and the driven pulley 15 are both located in the same plane as the axis of the drainage pipe 8, the chain groove of the roller chain 16 is engaged with the gear teeth of the driving sprocket 14, and the chain of the roller chain 16 is engaged with the wheel groove of the driven pulley 15, and the motor 17 is connected to the bearing of the driving sprocket 14.

[0081] The suspended bracket 2 is composed of a hook 21, a frame body 22, a reserved part 23, a counterweight 24 and a lateral telescopic wheel 25; wherein the hook 21 passes through the pin of the roller chain 16, the frame body 22 is connected to the hook 21, the reserved part 23 is located on the surface of the frame body 22, the counterweight 24 is located at the bottom of the frame body 22, and the double-sided telescopic rod 25 is an elastic telescopic rod with a universal wheel at the end, which is located on both sides of the frame body 22.

[0082] The processing unit 3 includes the following equipment: an ultraviolet photolyzer 31, a photocatalytic reactor 32, an ultrasonic generator 33, an electrolysis device 34, a low-temperature plasma generator 35, a high-pressure water gun 36, a scraper 37, a sustained-release preparation delivery component 38 and a biofilm component 39; corresponding to the 9 processing units, the auxiliary unit 4 includes: an ultraviolet sensing probe 41, a light sensing probe 42, a high-frequency AC power supply, a DC regulated power supply, a high-voltage pulse power supply, a high-pressure plunger pump, a mud collection truck, a sustained-release preparation processing room, and an aeration head 49; the equipment of the processing unit and its corresponding auxiliary units can be selected separately according to the specific conditions of the drainage pipe and the processing requirements, or they can be selected in combination.

[0083] Furthermore, the specific structure and application scope of the processing unit are as follows: ① The ultraviolet photolyzer 31 is composed of an ultraviolet lamp and a waterproof cable, and is suitable for purifying drainage pipes with good water transparency and requiring disinfection and sterilization. The ultraviolet lamp is a mercury ultraviolet lamp, a fluorescent ultraviolet lamp, a spark ultraviolet lamp, a Lyman flash ultraviolet lamp, a Shulai ultraviolet lamp, an electrodeless ultraviolet lamp, a microwave ultraviolet lamp or a laser ultraviolet lamp; the model of the waterproof cable is FS-YJY, and the specifications are single-core, three-core or four-core; ② The photocatalytic reactor 32 is composed of a mesh photocatalytic material, a lamp and a waterproof cable, and is suitable for purifying drainage pipes with a low concentration of suspended solid particles in water and serious soluble organic pollution. The mesh photocatalytic material is a mesh cylinder with a hollow surface, which is embedded in the outside of the ultraviolet lamp and is used to produce hydroxyl radicals in coordination with ultraviolet or visible light; the material of the mesh photocatalytic material is black titanium, titanium dioxide, zinc oxide, tin oxide, and zirconium dioxide; the lamp includes a xenon lamp, an LED lamp and an ultraviolet lamp, wherein the specifications of the ultraviolet lamp are consistent with those of the ultraviolet lamp of the ultraviolet photolyzer; the specifications of the waterproof cable are consistent with those of the waterproof cable of the ultraviolet photolyzer; ③ The ultrasonic generator 33 is composed of a high-frequency vibration head, a vibration membrane and a waterproof cable, and is suitable for purifying drainage pipes with serious organic pollution in water bodies. The high-frequency vibration head can perform high-frequency vibration under the action of high-frequency alternating current; the vibration membrane is located on the outside of the high-frequency vibration head, and is used to transmit and diffuse vibration to the water body; the specifications of the waterproof cable are consistent with those of the waterproof cable of the ultraviolet photolyzer; ④ The electrolysis device 34 is composed of a plurality of anodes, a plurality of cathodes and waterproof cables, and is suitable for purifying full-pipe drainage pipes with serious organic pollution in water bodies. The anode is made of graphite, and the cathode is made of iron, copper, aluminum, silver or platinum. The anode and cathode are in the shape of rectangle, rod or circle. The anodes and cathodes are arranged in parallel and crosswise manner, and the distance between adjacent anodes and cathodes is 2-20 cm. The specification of the waterproof cable is consistent with the waterproof cable of the ultraviolet photolyzer. ⑤ The low-temperature plasma generator 35 is composed of discharge wires, plate electrodes and waterproof cables, and is suitable for purifying non-full-pipe drainage pipes with serious organic pollution in water bodies. The discharge wires are a plurality of stainless steel wires fixed in parallel to each other on an insulating frame below the water surface, and the distance between adjacent stainless steel wires is 0.2-2 cm, connected to pulse high voltage; the plate electrode is a stainless steel plate, fixed on an insulating frame below the water surface and grounded; the distance between the plate electrode and the discharge line is 3-30 cm; the specifications of the waterproof cable are consistent with the waterproof cable of the ultraviolet photolyzer; ⑥ The high-pressure water gun 36 consists of a high-pressure gun head and a high-pressure water pipe, which is suitable for dredging drainage pipes with serious siltation or sedimentation. The high-pressure gun head is a component with one or more nozzles built in, which accelerates the water flow rate by limiting the flow area of ​​water; the high-pressure water pipe is a soft rubber hose wrapped with wear-resistant steel wire cloth, which can withstand a large water pressure; ⑦ The scraper 37 consists of a slag bucket and a mud bucket, which is suitable for dredging drainage pipes with more scum and sediment, wherein the slag bucket is in the shape of a winnowing, bag or spoon, and is used to scrape off the upper scum of sewage; the mud bucket is in the shape of a winnowing, shovel or bucket, and is used to scrape off the lower mud of sewage;⑧ The slow-release preparation delivery component 38 is composed of a mesh container and a slow-release biochemical preparation, and is suitable for purifying drainage pipes with a relatively slow flow rate. The mesh container has a hollow sphere, cylinder or cuboid shape, and is made of SS316L, SS304, UPVC or PE; the types of slow-release biochemical preparations include: slow-release pH regulators, slow-release pH buffers, slow-release demulsifiers, slow-release bacteria and slow-release microbial nutrients; ⑨ The biofilm component 39 is composed of biofilm fillers and biofilms, and is suitable for purifying drainage pipes where pollutants are easily biodegradable. The biofilm fillers have a braided, spherical, rectangular, cylindrical, disc-shaped, filamentous, ribbon-shaped, melon-shaped shape, and are made of PE, PP, RPP, PVC, CPVC, PVDF, polyester, sponge, and agricultural and forestry waste; the biofilm fillers include two types of biofilming methods: pre-biofilming and natural biofilming, so that the biofilm is attached to its surface. .

[0084] The positioning and functions of the 9 auxiliary units are as follows:

[0085] First, the ultraviolet sensor probe 41 is placed near the ultraviolet lamp of the ultraviolet photolyzer 31 at a distance of 10-50 cm, and is used to monitor the working condition of the ultraviolet photolyzer 31; the ultraviolet sensor probe 41 is connected to the feedback alarm through a signal line, and the feedback alarm is located on the ground 5 outside the inspection well 6;

[0086] Secondly, the light sensing probe 42 is placed near the lamp of the photocatalytic reactor 32 at a distance of 10-50 cm, and is used to monitor the working condition of the photocatalytic reactor 32; the light sensing probe 42 is connected to a feedback alarm through a signal line, and the feedback alarm is located on the ground 5 outside the inspection well 6;

[0087] Thirdly, the high-frequency AC power supply is placed on the ground 5 outside the inspection well 6, and is used to provide a high-frequency oscillating current for the high-frequency vibration head of the ultrasonic generator 33; the frequency of the high-frequency oscillating current is 20-100 kHz;

[0088] Fourthly, the DC regulated power supply is placed on the ground 5 outside the inspection well 6, and is used to provide DC power to the electrolysis device 34; the voltage of the DC power is 6-36 V;

[0089] Fifth, the high-voltage pulse power supply is placed on the ground 5 outside the inspection well 6, and is used to provide high-voltage pulse current to the low-temperature plasma generator 35; the voltage of the high-voltage pulse current is 20-200 kV, and the pulse frequency is 20-200 Hz;

[0090] Sixth, the high-pressure plunger pump is placed on the ground 5 outside the inspection well 6, and is used to provide high-pressure water flow for the high-pressure water gun 36; the outlet pressure head of the high-pressure water flow is 5-30 MPa;

[0091] Seventh, the mud collecting vehicle is parked on the ground 5 outside the inspection well 6 to collect the mud scraped by the scraper 37; the storage and transportation volume of the mud collecting vehicle is 5-50 m 3 ;

[0092] Eighth, the location of the sustained-release preparation processing room is not limited, and it is used to match the biochemical sustained-release preparation for the sustained-release preparation delivery component 38; the biochemical sustained-release preparation is made by embedding the biochemical preparation (such as acid, alkali, salt, bacterial agent) into the sustained-release material (such as agar, sodium alginate, high molecular polymer);

[0093] Ninth, the aeration head 49 is placed below the biofilm assembly 39 to promote the growth and metabolism of aerobic microorganisms in the biofilm assembly 39; the aeration head 49 is connected to an air pump through a hose, and the air pump is located on the ground 5 outside the inspection well 6.

[0094] Furthermore, the present invention also proposes a purification method for a track-type in-situ purification system for a drainage pipe.

[0095] The purification method described divides the entire process into three stages: "installation, operation and maintenance".

[0096] The installation phase specifically includes the following steps:

[0097] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 7 for operation;

[0098] Step 2: Install the chain track 1, which specifically includes 2 installation methods:

[0099] First, the supporting frame 11, the fixed node 12, the frame base 13, the driving sprocket 14 and the driven pulley 15 are all installed in the detection well 6, so that the roller chain 16 has a double-strand "U-shaped" structure;

[0100] Secondly, a part of the supporting frame 11 and the driving sprocket 14 are installed above the detection well 6, and the fixed node 12, the frame base 13 and the driven pulley 15 are installed in the detection well 6, so that the roller chain 16 has a single-strand "mouth-shaped" structure;

[0101] Step 3: Fix the hanging bracket 2 on the roller chain 16 in the inspection well 6. To prevent the treatment units 3 from colliding with each other after being impacted by the sewage 7 in the drainage pipe 8, the hanging bracket 6 should usually maintain a certain distance when hanging, and the distance should be greater than the overall height of the treatment unit 3; for the case where the treatment units need to be arranged closely, a counterweight 24 should be provided at the bottom of the frame 22 of the hanging bracket 2; for the case where the hanging bracket 6 needs to be prevented from lateral swinging, lateral telescopic wheels 25 should be provided on both sides of the frame 22 of the hanging bracket 2;

[0102] Step 4: According to the water quality and purification requirements of the sewage 7 in the drainage pipe 8, select a suitable treatment unit 3 to be installed on the hanging bracket 2, and install the corresponding auxiliary unit 4;

[0103] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the roller chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0104] Step 7: The drainage pipe 8 is filled with water normally.

[0105] The operation phase specifically includes the following steps:

[0106] Step 1: Turn on the processing unit 3 and its auxiliary unit 4;

[0107] Step 2: Various treatment units 3 achieve in-situ purification of the drainage pipe 8 through their respective action mechanisms;

[0108] When the treatment unit is an ultraviolet photolyzer 31 and the auxiliary unit is an ultraviolet sensing probe 41, the ultraviolet sensing probe 41 is placed near the ultraviolet lamp of the ultraviolet photolyzer 31. The ultraviolet light emitted by the ultraviolet lamp of the ultraviolet photolyzer destroys the DNA or RNA molecular structure in the cells of the microorganisms, causing cell death, thereby directly killing various bacteria, viruses, parasites, algae and other pathogens in the sewage; in addition, in sewage with a high concentration of organic pollution, the ultraviolet lamp can achieve the degradation of large molecular organic matter or even complete mineralization through direct photolysis, thereby reducing the concentration of organic pollutants in the sewage; when the ultraviolet sensing probe 41 detects that the intensity of ultraviolet light emitted by the ultraviolet photolyzer is insufficient, the operation of the ultraviolet photolyzer 31 is stopped and repaired.

[0109] When the treatment unit is a photocatalytic reactor 32 and the auxiliary unit is a light sensing probe 42, the light sensing probe 42 is placed near the ultraviolet lamp of the photocatalytic reactor 32. The photocatalytic reactor destroys the DNA or RNA molecular structure in the cells of the microorganism through the ultraviolet rays emitted by the ultraviolet lamp, causing cell death, thereby directly killing various bacteria, viruses, parasites, algae and other pathogens in the sewage; and through the synergistic effect of the mesh photocatalytic material and the light, effectively stimulates the generation of hydroxyl radicals (·OH) in the sewage, and then through the addition, substitution, electron transfer, bond breaking and other effects of free radicals and organic compounds, large molecular organic matter is degraded into small molecular substances, and even directly degraded into carbon dioxide and water, thereby effectively reducing the organic pollution of the sewage; when the light sensing probe 42 detects that the ultraviolet intensity emitted by the ultraviolet lamp is insufficient, the operation of the ultraviolet photolyzer is stopped and repaired.

[0110] When the processing unit is an ultrasonic generator 33 and the auxiliary unit is a high-frequency AC power supply, the high-frequency AC power supply is placed on the ground outside the inspection well to provide high-frequency oscillating current for the high-frequency vibration head of the ultrasonic generator 33. The ultrasonic generator 33 generates ultrasonic waves through the high-frequency vibration head to cause cavitation inside the sewage. The high temperature, high pressure and shock waves generated by the cavitation phenomenon in an instant (between hundreds of nanoseconds and several microseconds) cause water molecules to break down into free radicals such as ·H and ·OH. The free radicals react with organic matter to produce an oxidation reaction, thereby effectively reducing the organic matter in the sewage. After the ultrasonic generator 33 has been running for a period of time (5-30 days), it is inspected and cleaned.

[0111] Furthermore, when the processing unit is an electrolysis device 34 and the auxiliary unit is a DC regulated power supply, the DC regulated power supply is placed on the ground outside the inspection well to provide DC power to the electrolysis device 34. The electrolysis device 34 generates a large amount of ·OH and H by electrolyzing water at the anode. + , the cathode produces a large amount of OH - , and the H generated at the anode + Acid-base neutralization is performed; OH has strong oxidizing properties and can completely mineralize organic matter in sewage into carbon dioxide and water without causing secondary pollution; after the electrolysis device 34 has been running for a period of time (5-30 days), it should be inspected and cleaned.

[0112] Furthermore, when the processing unit is a low-temperature plasma generator 35 and the auxiliary unit is a high-voltage pulse power supply, the high-voltage pulse power supply is placed on the ground outside the inspection well to provide high-voltage pulse current for the low-temperature plasma generator 35. The low-temperature plasma generator 35 accelerates electrons through a pulsed electric field, so that the electrons have higher energy (5-20 eV). The high-energy electrons collide with water molecules and oxygen molecules, and are cracked, excited or ionized to generate active free radicals such as ·OH and ·O and strong oxidizing substances such as O3 and H2O2, thereby effectively degrading organic components in sewage. After the low-temperature plasma generator 35 has been running for a period of time (5-30 days), it should be inspected and cleaned.

[0113] Furthermore, when the processing unit is a high-pressure water gun 36 and the auxiliary unit is a high-pressure plunger pump, the high-pressure plunger pump is placed on the ground outside the inspection well 6 to provide high-pressure water flow for the high-pressure water gun 36. The high-pressure water gun 36 flushes away the silt at the bottom of the inspection well 6 through the jet of high-speed water flow, and peels off the dirt adhering to the pipe wall, thereby achieving the purpose of unblocking the pipeline; after the high-pressure water gun 36 has been running for a period of time (5-30 days), it should be inspected and cleaned.

[0114] Furthermore, when the processing unit is a scraper 37 and the auxiliary unit is a mud collecting truck, the mud collecting truck is parked on the ground 5 outside the inspection well 6 to collect the mud scraped off by the scraper. The scraper 37 collects and removes the floating slag and sludge in the drainage pipe through the slag bucket and the mud bucket to achieve the purpose of cleaning the pipe. After the scraper has been running for a period of time (5-30 days), it should be inspected and cleaned.

[0115] Furthermore, when the processing unit is a sustained-release preparation delivery component 38 and the auxiliary unit is a sustained-release preparation processing room, it is used to match the sustained-release preparation delivery component with biochemical sustained-release preparations. The sustained-release preparation delivery component 38 slowly and persistently releases various biochemical preparations into the sewage through the sustained-release effect of the sustained-release biochemical preparations, thereby achieving the purpose of regulating water quality and enhancing water purification. After the sustained-release preparation delivery component 38 has been running for a period of time (5-30 days), it should be inspected and repaired, and the sustained-release biochemical preparations should be replaced.

[0116] Furthermore, when the treatment unit is a biofilm component 39 and the auxiliary unit is an aeration head 49, the aeration head 49 is placed below the biofilm component to promote the growth and metabolism of aerobic microorganisms in the biofilm component; the aeration head 49 is connected to an air pump via a hose, and the air pump is located on the ground 5 outside the inspection well 6; the biofilm component achieves the purpose of purifying sewage through the transformation of pollutants by the microorganisms on the biofilm; after the biofilm component 39 has been running for a period of time (5-30 days), it should be inspected and the biofilm should be renewed.

[0117] The maintenance phase specifically includes the following steps:

[0118] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the processing unit 3 that needs to be repaired is transported to the top of the inspection well 7 along with the roller chain 16;

[0119] Step 2: Remove the processing unit 3 from the hanging bracket 2, and inspect and clean the processing unit 3;

[0120] Step 3: Re-fix the processing unit 3 on the hanging bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired processing unit 3 is transported to the drainage pipe 8 along the roller chain 16, and finally start the processing unit 3 and its auxiliary unit 4.

[0121] A track-type in-situ purification system for drainage pipes, the system specifically includes: a chain track 1, a hanging bracket 2, a processing unit 3 and an auxiliary unit 4; the chain track 1 is installed in an inspection well 6 and a drainage pipe 8, the hanging bracket 2 is hung on the chain track 1, and the processing unit 3 is nested in the hanging bracket 2.

[0122] The hanging bracket 2 is composed of a hook 21, a frame body 22, a slot 23 and a counterweight 24; wherein the hook 21 is engaged with the pin of the chain 16, thereby limiting the relative position of the frame body 22 and the chain 16; the hook 21 is arranged on the frame body 22, and the slot 23 is arranged on the frame body 22.

[0123] The processing unit 3 of the system uses an ultraviolet photolyzer 31 , and correspondingly, the auxiliary unit 4 uses an ultraviolet sensing probe 41 .

[0124] The main body of the ultraviolet photolyzer 31 is an ultraviolet lamp tube, the end of the ultraviolet lamp tube is waterproofed by waterproof coating, and the two ends of the ultraviolet lamp tube are embedded in the frame body 22 through the slots 23; the ultraviolet wavelength range irradiated by the ultraviolet lamp tube 23 is 100~300nm, and each ultraviolet lamp tube corresponds to a specific specification within the ultraviolet wavelength range; the irradiation intensity range of the ultraviolet lamp tube is 50~5000μW / cm 2 , and the irradiation intensity is regulated by the power supply monitoring unit 4; the counterweight 24 is located at the bottom of the frame 22, and is used to increase the weight of the frame 22 so that the hanging bracket 2 does not shake violently in the drainage pipe 8.

[0125] The hook 21 is in the shape of a ring and is made of SS316L. The frame body 22 is connected to the hook 21 and is in the shape of a three-pointed star and is made of SS316L. The card slot 23 is located on the surface of the frame body 22 and can engage with both ends of the ultraviolet lamp and is made of SS316L.

[0126] The power supply monitoring unit 4 is composed of a waterproof cable, an ultraviolet sensor probe 41, a signal line and a feedback alarm; wherein, the waterproof cable connects the ultraviolet photolyzer 31 to the mains, and the ultraviolet sensor probe 41 is placed below the hanging bracket 2, at a distance of 10-50 cm from the ultraviolet photolyzer 31, for monitoring the working condition of the ultraviolet photolyzer 31; the ultraviolet sensor probe 41 is connected to the feedback alarm via a signal line, and the feedback alarm is located on the ground 5 outside the inspection well 6, and when it is detected that the irradiation intensity of the ultraviolet photolyzer 31 is insufficient, the feedback alarm alarms.

[0127] The purification methods of this system include

[0128] Installation Phase

[0129] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 6 for operation;

[0130] Step 2: Install a chain track 1 in the inspection well, the chain track 1 comprising a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0131] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0132] Step 4: Install the ultraviolet photolyzer 31 of a specific ultraviolet wavelength on the hanging bracket 2, and place the ultraviolet sensing probe 41 below the hanging bracket 2, and connect the ultraviolet sensing probe 41 to the feedback alarm located on the ground 5 outside the inspection well 6 through a signal line;

[0133] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0134] Step 6: The drainage pipe 8 is flowing with water normally;

[0135] Operation phase:

[0136] Step 1: According to the water quality characteristics and purification requirements of the drainage pipe 8, the power supply monitoring unit 41 is turned on to supply power to the ultraviolet photolyzer 31 and adjust its ultraviolet radiation dose;

[0137] Step 2: The UV photodecomposer 31 achieves in-situ purification of the drainage pipe 8 through the purification effect produced by the specific UV wavelength and irradiation dose;

[0138] Step 3: When the ultraviolet sensor probe 41 detects that the intensity of the ultraviolet light emitted by the ultraviolet photolyzer 31 is significantly weakened, the operation of the ultraviolet irradiation unit 3 is stopped and the feedback alarm is sounded;

[0139] Maintenance phase:

[0140] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the ultraviolet photolyzer 31 that needs to be repaired is transported to the top of the inspection well 6 along with the chain 16;

[0141] Step 2: Remove the ultraviolet photolyzer 31 from the hanging bracket 2, and inspect and clean the ultraviolet photolyzer 31;

[0142] Step 3: Re-fix the UV photolyzer 31 on the hanging bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired UV photolyzer 31 is transported to the drainage pipe 8 along the chain 16, and finally turn on the UV photolyzer 31 and the UV sensing probe 41.

[0143] Furthermore, in step 2 of the operation phase, when the ultraviolet photolyzer 31 is in operation, the free combination or combined effect of disinfection and sterilization of the sewage 7 by ultraviolet irradiation of different ultraviolet wavelengths and irradiation intensities, direct photolysis of organic matter and oxidation of hydroxyl radicals is achieved to realize the multifunctional in-situ purification of the drainage pipe 8; specifically, to realize the disinfection and sterilization function of the sewage 7, the ultraviolet wavelength range is 185 ~ 300 nm, and the irradiation intensity range is 50 ~ 1000 μW / cm 2 ; To achieve direct photolysis of organic matter in sewage 7, the ultraviolet wavelength range is 150 ~ 200 nm, and the irradiation intensity range is 1000 ~ 3000 μW / cm 2 To achieve the hydroxyl radical oxidation function of sewage 7, the ultraviolet wavelength range is 100 ~ 185 nm, and the irradiation intensity range is 3000 ~ 5000 μW / cm 2 .

[0144] The actual effect of this example shows that after the drainage pipe of the system has been continuously operated by the ultraviolet irradiation unit for 24 hours, the COD of the sewage in the downstream inspection well is Cr The concentration was reduced by 65.3% compared with the upstream inspection well, and the microbial inactivation rate reached 90.1%.

[0145] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit 3 is a photocatalytic unit 32, and the auxiliary unit 4 supplies power to the photocatalytic unit and monitors its operation in real time. The specific implementation method is as follows:

[0146] The hanging bracket 2 is composed of a hook 21, a frame 22, a slot 23, a snap-on grid and a counterweight 24; wherein the hook 21 is engaged with the pin of the chain 16, thereby limiting the relative position of the frame 22 and the chain; the hook 21 is arranged on the frame 22, and the slot 23 is arranged on the frame 22; the slot 23 is located on the surface of the frame 22, and is used to embed the photocatalytic unit 32; the main body of the photocatalytic unit 32 is an ultraviolet lamp, and the end of the ultraviolet lamp is waterproofed by a waterproof coating; the slot 23 can engage with the two ends of the ultraviolet lamp, and the snap-on grid is externally mounted on the frame and wraps the photocatalytic module embedded in the frame 22; the counterweight 24 is located at the bottom of the frame 22, and is used to increase the weight of the frame 22 so that the hanging bracket 2 does not shake violently in the drainage pipe 8.

[0147] Furthermore, the ultraviolet wavelength range irradiated by the ultraviolet lamp is 100 ~ 500 nm, and each ultraviolet lamp corresponds to a specification within the ultraviolet wavelength range; the irradiation intensity range of the ultraviolet lamp is 50 ~ 5000μW / cm 2 , and the irradiation intensity is regulated by the power supply monitoring unit; the snap-on grid is in the shape of a cylinder, a sphere or a cuboid, and has a hollow grid on its surface, and a snap is provided on the inner edge of the grid, in which the photocatalytic module can be fixed; the material of the photocatalytic module is black titanium, titanium dioxide, zinc oxide, tin oxide or zirconium dioxide.

[0148] Furthermore, the power supply monitoring unit 4 is composed of a waterproof cable, a photosensitive probe 42, a signal line and a feedback alarm; wherein, the waterproof cable connects the ultraviolet irradiation unit 32 to the mains, and the photosensitive probe 42 is suspended under the suspension bracket 2 to monitor the working condition of the ultraviolet irradiation unit 32; the photosensitive probe 42 is connected to the feedback alarm through a signal line, and the feedback alarm is located on the ground outside the inspection well 6.

[0149] The system's water purification methods include

[0150] Installation Phase

[0151] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 6 for operation;

[0152] Step 2: Install the chain track 1 in the detection well 6, the chain track 1 includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0153] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0154] Step 4: Install the photocatalytic unit 32 and the light sensing probe 42 on the hanging bracket 2, and install an appropriate amount of photocatalytic modules in the snap-on grid according to the water purification needs of the drainage pipe, and connect the light sensing probe 42 to the feedback alarm located on the ground 5 outside the inspection well 6 through a signal line;

[0155] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0156] Step 6: The drainage pipe 8 is flowing with water normally;

[0157] Operation phase:

[0158] Step 1: Turn on the power supply monitoring unit 4, so that the photocatalytic unit 32 can realize photocatalytic oxidation, ultraviolet disinfection and sterilization or ultraviolet direct photolysis function under the action of a specific irradiation dose and the spatial layout of the photocatalytic module in the snap-on grid; specifically, when the coverage area of ​​the photocatalytic module on the snap-on grid is greater than 80%, the photocatalytic unit 32 mainly plays a photocatalytic oxidation function; when the coverage area of ​​the photocatalytic module on the snap-on grid is 20-80%, the photocatalytic unit 32 mainly plays a disinfection and sterilization function; when the coverage area of ​​the photocatalytic module on the snap-on grid 32 is less than 20%, the photocatalytic unit 32 mainly plays a direct photolysis function;

[0159] Step 2: According to the processing function of the photocatalytic unit 32, the power supply monitoring unit 4 is adjusted to adjust the ultraviolet wavelength and irradiation dose of the photocatalytic unit 32; specifically, in the photocatalytic oxidation function, the ultraviolet wavelength range is 250 ~ 500 nm, and the irradiation intensity range is 1000 ~ 3000 μW / cm 2 ; In the disinfection and sterilization function, the ultraviolet wavelength range is 185~250 nm, and the irradiation intensity range is 50~1000 μW / cm 2 ; In direct photolysis function, the UV wavelength range is 100~185 nm, and the irradiation intensity range is 3000~5000 μW / cm 2 ;

[0160] Step 3: When the light sensing probe 42 detects that the intensity of the ultraviolet light emitted by the photocatalytic unit 32 is significantly reduced, the operation of the photocatalytic unit 32 is stopped and the feedback alarm is sounded;

[0161] Maintenance phase:

[0162] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the photocatalytic unit 3 that needs to be repaired is transported to the top of the inspection well 6 along with the chain 16;

[0163] Step 2: Remove the photocatalytic unit 32 from the suspension bracket 2, and inspect and clean it;

[0164] Step three: re-fix the photocatalytic unit 32 on the suspension bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired photocatalytic unit 32 is transported to the drainage pipe 8 along the chain 16, and finally turn on the power supply monitoring unit 4.

[0165] In step 2 of the operation phase, the photocatalytic unit 32 achieves purification functions such as material oxidation, organic matter degradation, and disinfection and sterilization of the sewage 7 in the drainage pipe 8 through the catalytic action of the photocatalytic module, the direct ultraviolet photolysis action through the snap-on grid spaces, and the ultraviolet sterilization action.

[0166] The actual effect of this example shows that after the photocatalytic unit of the drainage pipe operated continuously for 24 hours, the COD of the sewage in the downstream inspection well Cr The concentration was reduced by 83.2% compared with the upstream inspection well, and the microbial inactivation rate reached 93.6%.

[0167] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit is an ultrasonic unit, and the auxiliary unit 4 is used to power the ultrasonic unit 33 and regulate its vibration frequency and amplitude. The specific implementation method is as follows:

[0168] The hanging bracket is composed of a hook 21, a frame body 22, a slot 23 and a counterweight 24; wherein the hook 21 passes through the pin of the chain 16, thereby connecting the frame body 22 to the chain 16; the hook 21 is ring-shaped; the frame body 22 is connected to the hook 21, the slot 23 is located on the surface of the frame body 22, and the ultrasonic unit 3 is embedded in the slot 23; the counterweight 24 is located at the bottom of the frame body 22, and is used to increase the weight of the frame body 22 so that the hanging bracket 2 will not shake violently in the drainage pipe 8.

[0169] Furthermore, the ultrasonic unit 33 is composed of a high-frequency vibrator, a diaphragm and a waterproof cable, and is suitable for purifying drainage pipes with serious organic pollution in the water body; the high-frequency vibrator can perform high-frequency vibration under the action of high-frequency alternating current; the diaphragm is located on the outside of the high-frequency vibrator, and is used to transmit and diffuse vibration to the water body; the multi-stage electronic control unit 4 is placed on the ground outside the inspection well, and is used to provide high-frequency oscillation current for the high-frequency vibrator of the ultrasonic unit; the waterproof cable is used to power the ultrasonic unit and transmit multi-stage control signals.

[0170] The purification methods of this system include

[0171] Installation Phase

[0172] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 6 for operation;

[0173] Step 2: Install a chain track 1 in the inspection well, the chain track comprising a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0174] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0175] Step 4: Install an ultrasonic unit 33 on each suspension bracket 2, and install a corresponding multi-stage electric control unit 4;

[0176] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0177] Step 6: The drainage pipe 8 is flowing with water normally;

[0178] Operation phase:

[0179] Step 1: According to the water quality characteristics and purification requirements of the drainage pipe 8, the multi-stage electric control unit 4 is turned on to supply power to each ultrasonic power source 33 and adjust its amplitude and frequency;

[0180] Step 2: The ultrasonic unit 33 achieves in-situ purification of the drainage pipe 8 through the ultrasonic effect generated at a specific amplitude and frequency;

[0181] Maintenance phase:

[0182] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the ultrasonic unit 33 that needs to be repaired is transported to the top of the inspection well along with the chain;

[0183] Step 2: Remove the ultrasonic unit 33 from the suspension bracket 2, and inspect and clean the ultrasonic unit 33;

[0184] Step 3: Re-fix the ultrasonic unit 33 on the hanging bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired ultrasonic unit 33 is transported to the drainage pipe 8 along the chain 16, and finally turn on the ultrasonic unit 33 and the multi-stage electronic control unit 4.

[0185] Furthermore, in step 2 of the operation phase, when the ultrasonic unit 33 is in operation, the ultrasonic wave with a specific frequency and amplitude generated by the high-frequency vibration head can produce a variety of effects in the sewage 7; when the ultrasonic wave frequency exceeds 30,000 Hz and the intensity exceeds 20 W / m 2When the ultrasonic wave is at a frequency of 20,000-30,000 Hz and the intensity exceeds 10 W / m 2 When the ultrasonic wave frequency exceeds 30000 Hz and the intensity is 1-10 W / m 2 When the flow is continuous, mechanical shearing effect and flocculation effect mainly occur, which are used to kill the bacteria in the drainage pipe 8 and promote the precipitation of tiny particles in the sewage, thereby eliminating the adverse effects of bacteria on the pipe and avoiding the long-distance transportation of tiny particles.

[0186] Therefore, during the implementation, the vibration frequency and intensity of the ultrasonic wave can be adjusted so that the ultrasonic unit 33 rotates in the above three working states in turn, thereby achieving multifunctional water purification. Or, according to the situation of pollutants, one working state is selected for water purification.

[0187] The actual effect of this example shows that after the drainage pipe operated by the system has been operated continuously for 24 hours by the ultrasonic unit, the COD of the sewage in the downstream inspection well is Cr The concentration was reduced by 83.2% compared with the upstream inspection well, and the microbial inactivation rate reached 93.6%.

[0188] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit 34 is an electrolysis device, and the auxiliary unit 4 is used as a multi-stage power supply. The specific implementation method is as follows:

[0189] The chain track 1 is composed of a supporting frame 11, a fixed node 12, a frame base 13, a driving sprocket 14, a driven pulley 15, a roller chain 16 and a motor 17; wherein the supporting frame 11 is a modular frame prefabricated according to the size of the inspection well, and is used to support the various components of the chain track 1; the material of the supporting frame 11 is SS316L; the fixed node 12 is the connection point between the supporting frame 11 and the side wall of the inspection well 6, and the connection method is expansion screw fixing; the frame base 13 is placed at the bottom of the inspection well 6, and its bottom surface must coincide with the bottom surface of the inspection well 6; the driving sprocket 14 is located at the top of the supporting frame 11, and the driven pulley 15 is located at the bottom of the supporting frame 11; the tooth pitch of the driving sprocket 14 is 8 cm, and the tooth thickness is 5 cm; the wheel groove width of the driven pulley 15 is 4 cm, and the wheel groove depth is 8 cm; the wheel surfaces of the driving sprocket 14 and the driven pulley 15 are both located in the same plane as the axis of the drainage pipe 8; the chain groove of the roller chain 16 meshes with the wheel teeth of the driving sprocket 14, and the chain of the roller chain 16 engages with the wheel groove of the driven pulley 15; the material of the driving sprocket (14), the driven pulley 15 and the roller chain 16 are all SS316L; the motor 17 is connected to the bearing of the driving sprocket 14, and is used to drive the driving sprocket 14 to rotate; the motor 17 is powered by a 220 V mains voltage, and the number is 2, one for use and one for backup.

[0190] The hanging bracket 2 is composed of a hook 21, a frame body 22, a slot 23 and a counterweight 24; wherein the hook 21 is engaged with the pin shaft of the chain 16, thereby limiting the relative position of the frame body 22 and the chain 16; the hook 21 is arranged on the frame body 22, and a slot 23 is arranged in the frame body 22; the slot 23 is used to embed the electrode plate 3; the frame body 22 is made of insulating material to prevent the system from short circuiting; the counterweight 24 is located at the bottom of the frame body 22, and is used to increase the weight of the frame body 22 so that the hanging bracket 2 does not shake violently in the drainage pipe 8.

[0191] The spacing of the hanging bracket 2 with the embedded electrode plate 34 in the chain track 1 is determined according to its position in the drainage pipe 8. The spacing between two adjacent electrode plates 34 located upstream of the drainage pipe is 0.5-2 cm, the spacing between two adjacent electrode plates 34 in the midstream is 1.5-3 cm, and the spacing between two adjacent electrode plates 34 downstream is 2.5-4 cm.

[0192] The multi-stage power supply 4 supplies direct current to the electrode plates 34, and the supply voltage range is 1-220 V, and the two adjacent electrode plates 34 are respectively positively charged and negatively charged; the multi-stage power supply 4 can adjust the voltage between any two adjacent electrode plates 34 according to the purification requirements of the drainage pipe 8, so as to achieve the degradation of macromolecular organic matter, the mineralization of small molecular organic matter or the oxidation of reduced inorganic matter in the sewage 7 of the drainage pipe 8 in sections. When achieving the degradation of macromolecular organic matter, the voltage between two adjacent electrode plates 34 is 50-220V; when achieving the mineralization of small molecular organic matter, the voltage between two adjacent electrode plates 3 is 20-110V; when achieving the oxidation of reduced inorganic matter, the voltage between two adjacent electrode plates 34 is 1-50V.

[0193] The system's water purification methods include

[0194] Equipment installation stage

[0195] Step 1: empty the sewage 7 in the drainage pipe 8 in advance, and ensure that the concentration of flammable and harmful gases in the inspection well 6 and the drainage pipe 8 is within a safe range, so that operators can enter the inspection well 6 for operation;

[0196] Step 2: Install the chain track 1 in the inspection well 6, and embed the electrode plate 3 in the hanging bracket 2 through the slot 23;

[0197] Step 3: Install two or more suspension brackets 2 on the chain track 1, and each suspension bracket 2 is embedded with an electrode plate 3 through a slot 23, and the electrode plates 34 are connected to the multi-stage power supply 4 through a waterproof cable;

[0198] Step 4: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0199] Step 5: The drainage pipe 8 is flowing with water normally;

[0200] Operation phase:

[0201] Step 1: Turn on the multi-stage power supply 4 to supply direct current to the electrode plates 34, and make the two adjacent electrode plates 34 respectively positively charged and negatively charged;

[0202] Step 2: According to the purification demand of the drainage pipe 8, the multi-stage power supply is adjusted to the power supply voltage between the electrode plates 34, so as to realize the degradation of macromolecular organic matter, the mineralization of small molecular organic matter or the oxidation effect of reduced inorganic matter in the sewage of the drainage pipe 8 in sections. Specifically, when realizing the degradation of macromolecular organic matter, the voltage between two adjacent electrode plates 34 is 50~220V, when realizing the mineralization of small molecular organic matter, the voltage between two adjacent electrode plates 34 is 20~110V, and when realizing the oxidation of reduced inorganic matter, the voltage between two adjacent electrode plates 34 is 1~50V;

[0203] Maintenance phase:

[0204] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the electrode plate 34 to be repaired is transported to the top of the inspection well 6 along with the chain 17;

[0205] Step 2: Remove the electrode plate 34 from the suspension bracket 2, and inspect and clean the electrode plate 34;

[0206] Step 3: Re-fix the electrode plate 34 on the suspension bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired electrode plate 34 is transported to the drainage pipe along the chain 17, and finally open the electrode plate 34.

[0207] The actual effect of the track-type in-situ purification system and purification method for drainage pipes implemented in this example shows that after the drainage pipes acted on by the system have been continuously operated for 24 hours by the electrode plates, the COD of the sewage in the downstream inspection well is Cr The concentration was reduced by 85.7% compared to the upstream inspection well, and the biodegradability of the sewage (B / C ratio) was increased by 63.2%.

[0208] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit 35 is a low-temperature plasma generator, and the auxiliary unit 4 is a multi-stage high-voltage pulse power supply, which provides high-voltage pulse current for the low-temperature plasma generator. The specific implementation method is as follows:

[0209] The hanging bracket 2 includes a frame body and a hook 21 connected to the frame body 22, the hook 22 passes through the pin of the chain 16, thereby connecting the frame body to the chain 16, the frame body 22 is in the shape of a stacked frame, including an upper frame plate, a lower frame plate and a vertical rod connecting the upper frame plate and the lower frame plate, and the frame body 22 is made of insulating material; a slot 23 is provided in the upper frame plate and the lower frame plate, and the slot 23 is made of insulating material for inserting the ground electrode and the high-voltage pulse electrode of the low-temperature plasma generator 35.

[0210] The electrode plates of the grounding electrode and the high-voltage pulse electrode are of multi-needle-plate type; the electrode plate spacing between the grounding electrode and the high-voltage pulse electrode is 10 cm; the multi-stage high-voltage pulse power supply is placed on the ground outside the inspection well, and the pulse voltage range that can be supplied is 100 kV, and the pulse current frequency range is 100 Hz.

[0211] The number of the hooks 21 is 2 or more to limit the axial displacement of the hanging bracket 2 in the drainage pipe 8; the upper part of the hook 21 is a hook-shaped object, and the lower part is a connecting rod connected to the frame body 22. The connecting rod needs to have a certain length so that the hanging bracket can smoothly pass through the right-angle bend when moving with the chain.

[0212] The purification methods of this system include

[0213] Step 1: empty the sewage 7 in the drainage pipe 8 in advance, and ensure that the concentration of flammable and harmful gases in the inspection well 6 and the drainage pipe 8 is within a safe range, so that operators can enter the inspection well 6 for operation;

[0214] Step 2: Install the chain track 1 in the inspection well 6, the chain track 1 includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0215] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0216] Step 4: Install the low-temperature plasma generator 35 on the suspension bracket 2, and install a multi-stage high-voltage pulse power supply on the ground 5 outside the inspection well to provide the low-temperature plasma generator 35 with high-voltage pulse currents with different pulse voltages and pulse frequencies;

[0217] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0218] Step 6: The drainage pipe 8 is flowing with water normally;

[0219] Operation phase:

[0220] Step 1: According to the water quality characteristics and purification requirements of the drainage pipe 8, the multi-stage high-voltage pulse power supply is turned on to supply power to the low-temperature plasma generator 3 and adjust the pulse voltage and pulse frequency;

[0221] Step 2: The low-temperature plasma generator 35 performs in-situ purification on the drainage pipe 8 by adjusting the plate spacing, pulse voltage and pulse frequency to achieve a corresponding purification effect;

[0222] Maintenance phase:

[0223] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the low-temperature plasma generator 3 that needs to be repaired is transported to the top of the inspection well along with the chain;

[0224] Step 2: Remove the low-temperature plasma generator 35 from the suspension bracket 2, and inspect and clean the low-temperature plasma generator 3;

[0225] Step 3: Re-fix the low-temperature plasma generator 35 on the suspension bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired low-temperature plasma generator 35 is transported to the drainage pipe 8 along the chain, and finally turn on the low-temperature plasma generator 35.

[0226] In step 2 of the operation phase, when the plate spacing is 0.5-2 cm, the pulse voltage is 60-100 kV, and the pulse frequency is 60-100 Hz, the low-temperature plasma generator 35 mainly achieves the degradation of organic matter in the sewage by generating hydroxyl radicals; when the plate spacing is 2-5 cm, the pulse voltage is 30-60 kV, and the pulse frequency is 30-60 Hz, the low-temperature plasma generator 35 mainly promotes the dissolution of oil and fat substances in the sewage through the ultrasonic effect; when the plate spacing is 5-10 cm, the pulse voltage is 10-30 kV, and the pulse frequency is 10-30 Hz, the low-temperature plasma generator 35 mainly achieves the disinfection and sterilization of sewage through the ultraviolet effect. Therefore, the plate spacing, pulse voltage and pulse frequency can be adjusted according to the type of pollutants detected in the drainage pipe 8 to achieve multifunctional in-situ purification of the drainage pipe 8. Alternatively, multiple suspension brackets 2 are arranged with different plate spacings, and different pulse voltages and pulse frequencies are provided, so that the plasma generators 35 in the multiple suspension brackets 2 can achieve multiple functions of water purification.

[0227] The actual effect of the implementation of this example shows that after the low-temperature plasma generator 35 continuously operates the drainage pipe 8 of the system for 12 hours, the COD of the sewage in the downstream inspection well is Cr The concentration was reduced by 91.3% compared with the upstream inspection well, and the microbial inactivation rate reached 86.2%.

[0228] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit 3 is a high-pressure flushing unit 36, and the auxiliary unit 4 is a sludge pumping and mud collecting vehicle and a water supply and power supply unit. The specific implementation method is as follows:

[0229] A suspension bracket is provided on the chain track 1, and a high-pressure flushing gun 36 is installed on the suspension bracket. The spray direction of the high-pressure flushing gun 36 is the same as the flow direction of sewage in the drainage pipe. The sludge pumping and mud collecting vehicle 5 includes a mud storage tank, a suction pump and a mud pumping pipe. The mud pumping pipe is placed at the bottom of the inspection well downstream of the high-pressure flushing gun 36.

[0230] The hanging bracket 2 includes a mesh cover 23, a telescopic rod 22 connected to the mesh cover 23, and a hook 21 connected to the telescopic rod 22. The hook 21 passes through the pin of the chain in the chain track, thereby connecting the hanging bracket to the chain. A high-pressure flushing gun 36 is installed in the mesh cover. Double-sided telescopic rods are arranged on both sides of the mesh cover. The double-sided telescopic rods 22 are elastic telescopic rods with universal wheels at the ends. The telescopic direction is perpendicular to the axis of the drainage pipe 8, which is used to limit the lateral displacement of the hanging bracket 2 in the drainage pipe 8. The number of the hooks is 2 or more to limit the axial displacement of the hanging bracket 2 in the drainage pipe 8; the telescopic rod 22 needs to have a certain length so that the hanging bracket 2 can smoothly pass through the right-angle bend when moving with the chain.

[0231] The method for using the system is characterized in that the method comprises

[0232] Installation Phase

[0233] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well for operation;

[0234] Step 2: Install a chain track 1 in the inspection well, the chain track 1 comprising a driving sprocket, a driven pulley and a chain matched therewith;

[0235] Step 3: Fix two hanging brackets on the chain, wherein the hanging brackets include a mesh cover 23, a telescopic rod 22 and a hook 21 connected to the telescopic rod;

[0236] Step 4: Adjust the length of the telescopic rod 22 of the hanging bracket according to the diameter and water level of the drainage pipe, and fix the hanging bracket 2 on the chain of the chain track 1, and install the high-pressure flushing gun 36 in the mesh cover 23 of the hanging bracket 2, so that the spraying direction of the high-pressure flushing gun 36 is the same as the flow direction of the sewage 7 in the drainage pipe 8;

[0237] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 15, so as to transport the hanging bracket 2 with the high-pressure flushing gun 36 installed to the inside of the drainage pipe 8;

[0238] Step 6: The sludge pumping and collecting vehicle 5 is located on the ground outside the inspection well 6;

[0239] Step 7: The drainage pipe 8 is inflowing water normally;

[0240] Operation phase:

[0241] Step 1: Turn on the water supply and power supply unit 4 to start the high-pressure flushing gun 36;

[0242] Step 2: The high-pressure flushing gun 36 located upstream of the drainage pipe 8 flushes the sludge into the downstream inspection well 6. At the same time, the sludge collection truck uses the sludge extraction pipe and suction pump set at the bottom of the downstream inspection well 6 to promptly pump the flushed sludge into the sludge collection tank.

[0243] Maintenance phase:

[0244] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the high-pressure flushing gun 36 that needs to be repaired is transported to the top of the inspection well 6 along with the chain;

[0245] Step 2: Remove the high-pressure washing gun 36 from the hanging bracket 2, and inspect and clean it;

[0246] Step 3: Re-fix the high-pressure flushing gun 36 on the hanging bracket, and rotate the driving sprocket 14 through the motor 17, so that the repaired high-pressure flushing gun 32 is transported to the drainage pipe 6 along the chain, and the water supply and power supply unit 4 is reopened.

[0247] During the operation phase, the chain 16 can also be driven by the motor 17 so that the high-pressure flushing gun 36 can crush and flush the sludge while moving in the mobile inspection well 6.

[0248] The actual results of this example show that after the system has been running continuously for 4 hours, the deposited sludge in the pipe section has been effectively removed, and the sludge removal rate has reached 83.6%.

[0249] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit 37 is a silt remover and the auxiliary unit is a silt pumping and mud collecting vehicle. The specific implementation method is as follows:

[0250] The suspended bracket 2 includes a frame body 22 and a hook 21 connected to the frame body, the hook 21 passes through the pin of the chain 16, thereby connecting the frame body 22 to the roller chain 16 of the chain track; the frame body 22 includes an upper frame, a lifting frame 23 arranged at the lower part of the upper frame, and a lower frame that can move up and down along the lifting frame 23, the upper frame is equipped with a slag bucket, and the lower frame is equipped with a mud bucket, and the height of the slag bucket and the mud bucket in the drainage pipe 8 can be adjusted by the lifting frame, so that it is convenient to skim off floating slag and shovel silt; a filter screen is installed above the mud bucket of the dredging and slag remover 37, and the plane where the filter screen is located is perpendicular to the axis of the drainage pipe; the sludge extraction and mud collection vehicle 4 includes a mud storage tank, a suction pump and a mud extraction pipe, and the mud collection pipe is placed at the bottom of the downstream inspection well 6 of the high-pressure flushing gun 37.

[0251] Furthermore, the number of hooks is 2 or more to limit the axial displacement of the hanging bracket 2 in the drainage pipe 8; the upper part of the hook is a hook-shaped object 21, and the lower part is a connecting rod 22 connected to the frame body, and the connecting rod 22 needs to have a certain length so that the hanging bracket 2 can smoothly pass through the right-angle bend when moving with the chain; the hanging bracket 2 includes a double-sided telescopic rod 24 located on both sides of the frame body, and the double-sided telescopic rod 24 is an elastic telescopic rod with a universal wheel at the end, and the telescopic direction is perpendicular to the axis of the drainage pipe 8, which is used to limit the lateral displacement of the hanging bracket in the drainage pipe 8.

[0252] Ways to use the system include:

[0253] Installation Phase

[0254] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 6 for operation;

[0255] Step 2: Install the chain track 1 in the detection well 6, the chain track 1 includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0256] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0257] Step 4: Install the dredging and slag remover 37 on the suspension bracket 2, and adjust the lifting frame 23 on the suspension bracket 2 according to the pipe diameter and water level of the drainage pipe 8, so that the slag bucket and mud bucket of the dredging and slag remover 3 are convenient for removing the floating slag and sludge in the drainage pipe 8;

[0258] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 with the silt remover 3 installed to the inside of the drainage pipe 8;

[0259] Step 6: The sludge collecting truck 4 is located on the ground 5 outside the inspection well 6;

[0260] Step 7: The drainage pipe 8 is inflowing water normally;

[0261] Operation phase:

[0262] Step 1: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the suspension bracket 2 to the inside of the drainage pipe 8, and make the moving direction of the suspension bracket 2 in the drainage pipe 8 and the opening direction of the slag bucket and mud bucket of the silt remover 37 opposite to the flow direction of the sewage in the drainage pipe;

[0263] Step 2: When the silt remover 37 moves relative to the sewage 7, the slag bucket can remove the floating scum on the upper layer of the sewage 7, the filter screen can filter out the suspended particles in the middle layer of the sewage 7, and the mud bucket can remove the sludge in the lower layer of the sewage 7;

[0264] Step 3: The suspension bracket 2 is transported from the drainage pipe 8 to the outside of the inspection well 6 by the continuous rotation of the motor 17. At this time, the scum, suspended particles and sludge collected by the silt remover 37 are transferred to the vehicle sludge storage tank by the sludge suction and sludge collection vehicle 4;

[0265] Step 4: Keep the motor 17 rotating continuously, so as to transport the cleaned silt remover 37 back into the drainage pipe 8, and then repeat steps 2 and 3;

[0266] Maintenance phase:

[0267] Step 1: When the desilting and slag remover 37 is blocked or damaged, the driving sprocket 14 is rotated in the opposite direction by the motor 17, so that the desilting and slag remover 37 that needs to be repaired is transported to the top of the inspection well 6 along with the chain;

[0268] Step 2: Remove the silt remover 37 from the suspension bracket 2, and inspect and clean the silt remover 37;

[0269] Step three: re-fix the silt remover 37 on the hanging bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired silt remover 37 is transported to the drainage pipe 8 along the chain, and then carry out steps one to four of the operation stage.

[0270] The actual results of this example show that after the drainage pipe has been continuously operated by the silt remover for 12 hours, the floating scum, suspended particles and silt in the downstream inspection well are effectively cleaned, and the SS concentration of the sewage is reduced by 73.0% compared with the upstream inspection well.

[0271] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1. The processing unit 38 is a sustained-release preparation dispenser, and the auxiliary unit 4 is a sustained-release preparation dispenser preparation workshop. The specific implementation method is as follows:

[0272] The hanging bracket 2 includes a frame body 22 and a hook 21 connected to the frame body, and the hook 21 passes through the pin of the chain 16 to connect the frame body 22 to the chain 16; a lifting frame 23 is provided on the frame body for installing the dispenser 3, and the installation height of the dispenser on the frame body can be adjusted, thereby adjusting its height in the drainage pipe so that it can be immersed in sewage.

[0273] The dispenser 38 includes a mesh container and a counterweight 24. The mesh container is in the shape of a hollow mesh sphere, cylinder or cuboid. A hinged door is provided on the mesh container, and the hinged door is hinged with the mesh container for easy opening and closing. The sustained-release preparation is loaded into the mesh container through the hinged door. The counterweight 24 is located at the bottom of the mesh container and is used to increase the weight of the frame 22 so that the dispenser 38 does not shake violently in the drainage pipe 8.

[0274] The types of the sustained-release preparations include sustained-release pH regulators, sustained-release pH buffers, sustained-release demulsifiers and sustained-release antibacterial agents, wherein the sustained-release pH regulators can adjust the pH value of sewage, the sustained-release pH buffers can buffer the impact of upstream water on the pH value of the pipe section, the sustained-release demulsifiers can promote the dissolution of insoluble oils and fats in water, and the sustained-release antibacterial agents can play a role in sterilization and disinfection.

[0275] How to use the system include

[0276] Installation Phase

[0277] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 6 for operation;

[0278] Step 2: Install the chain track 1 in the detection well 6, the chain track includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0279] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0280] Step 4: Install the dispenser 38 on each hanging bracket 2, and fill one or more types of sustained-release preparations in each dispenser according to the water quality and purification requirements of the sewage 7 in the drainage pipe 8;

[0281] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 with the dispenser 3 installed to the inside of the drainage pipe 8;

[0282] Step 6: The drainage pipe 8 is flowing with water normally;

[0283] Operation phase:

[0284] The dispenser 38 slowly and persistently releases various biochemical agents into the sewage through the slow-release agents loaded therein, so as to achieve the purpose of regulating water quality and in-situ water purification; among them, the slow-release pH regulator can adjust the pH value of the sewage, the slow-release pH buffer can buffer the impact of the upstream water on the pH value of the pipe section, the slow-release demulsifier can promote the dissolution of insoluble oils and fats in water, and the slow-release antibacterial agent can play a role in sterilization and disinfection.

[0285] Maintenance phase:

[0286] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the dispenser 3 that needs to be repaired is transported to the top of the inspection well 6 along with the chain 16;

[0287] Step 2: Remove the dispenser 38 from the hanging bracket 2, inspect and repair the dispenser 38, and replace the sustained-release preparation 4 loaded therein;

[0288] Step 3: re-fix the dispenser 38 filled with fresh sustained-release preparation on the hanging bracket 2 , and rotate the driving sprocket 14 through the motor 17 , so that it is transported into the drainage pipe 8 along with the chain 16 .

[0289] The actual results of this example show that after the system has been running continuously for 12 hours, the pH value of the sewage in the downstream inspection well has stabilized in the range of 6 to 9, the oil adhesion to the wall has been significantly improved, the average particle size of the oil has decreased by 68.5%, and the sterilization rate has reached 78.1%.

[0290] The track-type in-situ purification system for drainage pipes has the same basic structure and water purification method as in Example 1, the treatment unit 39 is a biofilm filler, and the auxiliary unit 4 is an aeration component; the specific implementation method is as follows:

[0291] Each hanging bracket is provided with two or more hooks 21 to limit the axial displacement of the hanging bracket 2 in the drainage pipe 8; the upper part of the hook 21 is a hook-shaped object, and the lower part is a connecting rod connected to the frame body 22, and the connecting rod needs to have a certain length so that the hanging bracket 2 can smoothly pass through the right-angle bend when moving with the chain.

[0292] How to use the system include

[0293] Installation Phase

[0294] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 7 for operation;

[0295] Step 2: Install the chain track 1 in the detection well 6, the chain track 1 includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0296] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0297] Step 4: Install the biofilm filler 39 and the multiple aeration heads 49 of the aeration assembly 4 on the hanging bracket 2, and connect the aeration heads 49 to the multi-stage air pump on the ground 5 outside the inspection well 6 through an air pipe;

[0298] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 to the inside of the drainage pipe 8;

[0299] Step 6: The drainage pipe 8 is flowing with water normally;

[0300] Operation phase:

[0301] Step 1: Turn on the multi-stage air pump to make each aeration head 49 aerate at a set intensity;

[0302] Step 2: The biofilm filler 39 transforms pollutants in the sewage 7 through microorganisms, and cooperates with the different aeration and oxygenation effects of the aeration heads 49 to achieve in-situ purification of the sewage 7 in the drainage pipe 8;

[0303] Maintenance phase:

[0304] Step 1: The driving sprocket 14 is rotated in the reverse direction by the motor 17, so that the hanging bracket 2 to be repaired is transported to the top of the inspection well 6 along with the chain 16;

[0305] Step 2: Remove the biofilm filler 39 and the aeration head 49 from the suspension bracket 2, and clean, repair or replace them;

[0306] Step 3: re-fix the normal biofilm filler 39 and the aeration head 49 to the suspension bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired biofilm filler 39 is transported to the drainage pipe 8 along the chain 16.

[0307] The actual effect of this example shows that after the system has been running continuously for 48 hours, the COD of the sewage in the downstream inspection well is Cr Compared with the upstream inspection well, the concentration was reduced by 90.15%, the ammonia nitrogen concentration was reduced by 72.8%, the total nitrogen concentration was reduced by 67.21%, and the total phosphorus concentration was reduced by 73.52%.

[0308] UV lamp UV lamp UV lamp UV lamp UV lamp UV lamp UV lamp UV lamp UV lamp UV lamp UV lamp

[0309] The protection content of the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be thought of by those skilled in the art are included in the present invention and are protected by the attached claims.

Claims

1. A track-type in-situ purification method for drainage pipes, characterized in that: The method comprises an installation phase Step 1: Drain the sewage in the drainage pipe in advance so that operators can enter the inspection well for operation; Step 2: Install a chain track in the inspection well, wherein the chain track includes a supporting frame, the supporting frame is equipped with a driving sprocket, a driven pulley and a chain matched therewith, the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe, the motor is connected to the driving sprocket to drive the driving sprocket to rotate, thereby driving the chain to move, the driven pulley is provided with a wheel groove, the chain groove of the chain is engaged with the wheel teeth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley; the supporting frame, the fixed node, the frame base, the driving sprocket and the driven pulley are all installed in the inspection well, so that the chain has a double-strand U-shaped structure; Step 3: Fix the hanging bracket on the chain; Step 4: Install the processing unit on the hanging bracket, and install the corresponding auxiliary unit, the auxiliary unit is used to power the processing unit and monitor its operation in real time; the processing unit includes one or more of an ultraviolet photolyzer, a photocatalytic reactor, an ultrasonic generator, an electrolysis device, a low-temperature plasma generator, a high-pressure water gun, a scraper, a slow-release preparation delivery component and a biofilm component; corresponding to the processing unit, the auxiliary units are one or more of an ultraviolet sensor probe, a light sensor probe, a high-frequency AC power supply, a DC regulated power supply, a high-voltage pulse power supply, a high-voltage plunger pump, a mud collection vehicle, a slow-release preparation processing room, and an aeration head; Step 5: The motor drives the active sprocket to rotate, and then drives the chain, so as to transport the hanging bracket to the inside of the drainage pipe; Step 6: The drainage pipe is flowing with water normally; Operation phase: Step 1: Turn on the processing unit and its auxiliary units; Step 2: The treatment unit achieves in-situ purification of the drainage pipe through its mechanism of action; Furthermore, the method also includes an overhaul phase, which specifically includes the following steps: Step 1: The driving sprocket is rotated in the reverse direction by the motor, so that the processing unit to be repaired is transported to the top of the inspection well along with the chain; Step 2: Remove the processing unit from the hanging bracket, and inspect and clean the processing unit; Step 3: Re-fix the processing unit on the hanging bracket, and use the motor to rotate the driving sprocket, so that the repaired processing unit is transported to the drainage pipe along the chain, and finally start the processing unit and its auxiliary units.

2. The method according to claim 1, characterized in that The driving sprocket is located at the top of the supporting frame, and the driven pulley is located at the bottom of the supporting frame; the tooth pitch of the driving sprocket is 1-15 cm, and the tooth thickness is 0.5-10 cm; the wheel groove width of the driven pulley is 2-8 cm, and the wheel groove depth is 4-12 cm; the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe.

3. The method according to claim 1, characterized in that The hanging bracket includes a frame body and a hook connected to the frame body, the hook passes through the pin of the chain to connect the frame body with the chain, the cross-sectional diameter of the hook is smaller than the depth of the wheel groove of the driven pulley, thereby ensuring that when the pin of the chain connected to the hook passes through the wheel groove of the driven pulley, the hook will contact the wheel groove of the driven pulley, but the chain will not collide with the wheel groove of the driven pulley, thereby achieving smooth passage of the hanging bracket at the driven pulley.

4. The method according to claim 3, characterized in that The number of hooks on each hanging bracket is 1 or 2; When the number of the hooks is 2, the axial displacement of the hanging bracket in the drainage pipe can be limited.

5. The method according to claim 3, characterized in that The upper part of the hook is a hook-shaped object, and the lower part is a connecting rod connected to the frame body. The connecting rod needs to have a certain length so that the hanging bracket can smoothly pass through the right-angle bend when moving with the chain.

6. The method according to claim 3, characterized in that The hanging bracket includes a counterweight; the counterweight is located at the bottom of the bracket body and is used to increase the weight of the bracket body so that the hanging bracket does not shake violently in the drainage pipe.

7. The method according to claim 3, characterized in that Double-sided telescopic rods are arranged on both sides of the frame body, and the ends of the double-sided telescopic rods are provided with universal wheels. The telescopic directions of the double-sided telescopic rods are perpendicular to the axis of the drainage pipe, which are used to limit the lateral displacement of the hanging bracket in the drainage pipe.

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