CN110790375A - Drainage pipeline source pollution control multistage biochemical treatment system - Google Patents

Drainage pipeline source pollution control multistage biochemical treatment system Download PDF

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Publication number
CN110790375A
CN110790375A CN201910989491.XA CN201910989491A CN110790375A CN 110790375 A CN110790375 A CN 110790375A CN 201910989491 A CN201910989491 A CN 201910989491A CN 110790375 A CN110790375 A CN 110790375A
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Prior art keywords
chain
drainage pipeline
aeration
filler
driven pulley
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CN201910989491.XA
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CN110790375B (en
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董磊
张欣
崔贺
杨一烽
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention provides a drainage pipeline source pollution control multistage biochemical treatment system, which comprises: chain type guide rail, suspension type support, biomembrane filler and aeration subassembly. The chain type guide rail is arranged in the inspection well and the drainage pipeline, the suspension type support is suspended on the chain type guide rail, the biological membrane filler is nested on the suspension type support, and the aeration component performs aeration and oxygenation on sewage in the drainage pipeline. The invention fully utilizes the internal spaces of the inspection well and the drainage pipeline, realizes the transportation and arrangement of the biomembrane packing and the aeration component in the drainage pipeline through the exquisite design of the chain type guide rail and the suspension type bracket, and realizes the multi-stage AO biochemical treatment of the sewage through the coupling of the multi-stage blast intensity regulation and control of the aeration component and the characteristic of the tubular reactor of the drainage pipeline. Compared with the prior art, the invention has the outstanding characteristics of strong applicability, easy implementation, various functions, flexible operation, obvious effect and the like.

Description

Drainage pipeline source pollution control multistage biochemical treatment system
Technical Field
The invention belongs to the technical field of municipal drainage, and particularly relates to a drainage pipeline source sewage control multistage biochemical treatment system.
Background
The drainage pipeline is an engineering facility for collecting and conveying urban domestic sewage, industrial wastewater and rainwater. In recent years, with the acceleration of the urbanization process of China, the number and scale of the construction of drainage pipelines are increased year by year. Such as: in the thirteen-five period, the offshore city has the matched drainage pipeline of about 100 km in the central urban area and the newly-built drainage pipeline of about 310 km in the suburban area on the basis of the drainage pipeline with the total built length of about 9530 km. Increasingly perfect drainage pipeline systems provide convenience for conveying various sewage and rainwater in cities and towns, however, along with the gradual bulkiness of the drainage pipeline systems, the problems of water pollution, secondary disasters and the like of drainage pipelines are gradually obvious.
These problems are mainly manifested in: 1) anaerobic hydrolysis of organic polluted wastewater in drainage pipelines can generate a large amount of toxic, flammable and explosive gases (such as: carbon monoxide (CO), hydrogen sulfide (H)2S)), the accumulated materials can be toxic or exploded by naked fire to a certain extent; 2) the drainage pipeline is lack of oxygen-enriched environment and aerobic microorganisms, so that the sewage is black and smelly, a large amount of odor is dissipated from the inspection well, and the sense of citizens is stimulated; 3) the confluence system drainage pipe and the rainwater pipe with the rainwater and sewage mixed connection have slower water flow in dry weather, suspended particles in the sewage are easy to precipitate to form sludge, and the sludge in the pipe is flushed out due to the sharp increase of water amount in rainy weather, so that the problem of blackness and odor of rivers and lakes is frequently caused.
In order to solve the problems, the existing urban drainage pipeline system in China still only has conveying capacity, but does not have the functions of aeration, oxygenation, water purification and sedimentation prevention. Moreover, the delivery end point of the drainage pipeline is usually a town sewage treatment plant or a natural water body, so if the internal space of the drainage pipeline can be fully utilized to carry out in-situ purification, the sewage receiving load of the town sewage treatment plant or the natural water body can be greatly relieved, and the water pollution control capability and the water environment treatment level can be further improved. Therefore, a new technology for in-situ purification of drainage pipelines is urgently needed in the market.
The drainage pipeline is a sewage conveying facility and is also a long and narrow tubular reactor. The tubular reactor has the characteristics of no back mixing in the axial direction, gradual change of concentration, realization of sectional control and the like. Therefore, the characteristics of the drainage pipeline are combined with an aerobic/anoxic (A/O) biomembrane water purification process based on multi-stage aeration regulation, the aerobic and anoxic sectional treatment of sewage can be realized in the drainage pipeline, so that various water purification functions such as organic matter degradation, denitrification and the like are achieved, and simultaneously, the aeration also has a disturbance effect on sludge of the drainage pipeline, so that the accumulation of the sludge in the pipeline can be effectively prevented.
In conclusion, the application of the aerobic/anoxic/anaerobic biomembrane water purification process based on multi-stage aeration regulation to the in-situ purification of the drainage pipeline is an optional approach. However, there are few examples of such research and applications at home and abroad.
Disclosure of Invention
The invention aims to realize the in-situ water quality purification of the drainage pipeline by implementing proper engineering transformation on the drainage pipeline and an inspection well, fully utilizing the internal space of the drainage pipeline and conveying a biomembrane filler and an aeration component into the drainage pipeline through the design of a chain type guide rail and a suspension type bracket.
In order to achieve the purpose, the technical scheme of the invention is as follows: the drainage pipeline source pollution control multistage biochemical treatment system is characterized in that the guide rail type multistage biochemical water purification system comprises
The chain type guide rail is arranged in the inspection well and the drainage pipeline;
the suspension type bracket is suspended on the chain type guide rail and moves in the inspection well and the drainage pipeline along the chain type guide rail;
the biological membrane filler is nested in the suspension type bracket and purifies sewage through an enriched biological membrane;
the aeration component, the air pipe and the aeration head of the aeration component are also nested in the suspension type support and are used for carrying out multi-stage aeration oxygenation on the sewage.
Further, chain formula guide rail includes bearing frame, bearing frame installs drive sprocket, driven pulley and rather than the complex chain, drive sprocket and driven pulley's wheel face all is located the coplanar with drainage pipe's axis, the motor with drive sprocket links to each other for it is rotatory to drive sprocket, and the race is established to driven pulley, the race interlock of the sprocket of chain and drive sprocket, the outside of chain then with driven pulley's race block.
Furthermore, the bearing frame and the side wall of the inspection well are provided with fixing nodes, the fixing nodes are the connecting points of the bearing frame and the side wall of the inspection well, and the connecting mode is welding, bonding or expansion screw fixing; the bottom of the bearing frame is provided with a frame base, the frame base is arranged at the bottom of the inspection well, and the bottom surface of the frame base is matched with the bottom surface of the inspection well.
Further, the driving chain wheel is positioned at the top of the bearing frame, and the driven pulley is positioned at the bottom of the bearing frame; the pitch of the driving chain wheel is 5-8cm, and the tooth thickness is 3-5 cm; the width of a wheel groove of the driven pulley is 2-4 cm, and the depth of the wheel groove is 3-4 cm; the wheel surfaces of the driving chain wheel and the driven pulley and the axis of the drainage pipeline are located on the same plane.
Further, the suspension type support comprises a frame top and a hook connected with the frame top, and the hook penetrates through a pin shaft of the chain so as to connect the frame body with the chain; the bottom of the frame top is provided with a buckle, the filler net rack and the aeration head frame are connected with the frame top through the buckle, the biofilm filler is fixed on the filler net rack, and the aeration head of the aeration component is fixed at the bottom of the aeration head frame; the aeration head is connected with a multistage air pump outside the inspection well through an air pipe.
Furthermore, each suspension type support is provided with 2 or more hooks to limit the axial displacement of the suspension type support in the drainage pipeline; the upper part of the hook is a hook-shaped object, the lower part of the hook is a connecting rod connected with the frame body, and the connecting rod needs to have a certain length so that the suspension type support can smoothly pass through a right-angled bend when moving along with the chain; the biomembrane filler is braided, spherical, rectangular, cylindrical, disc-shaped, filiform, banded or melon-flake-shaped, and is made of PE, PP, RPP, PVC, CPVC, PVDF, terylene, sponge or agricultural and forestry waste; the biological membrane filler comprises 2 membrane hanging modes of membrane hanging in advance and natural membrane hanging, so that microorganisms with a water quality purification function are enriched on the surface of the biological membrane filler.
The multistage air pump is provided with a plurality of air outlets with different blowing strengths, and the air outlets are respectively connected with different aeration heads through air pipes, so that the multistage blowing strength regulation and control of the aeration component are realized.
The use method of the drainage pipeline source pollution control multistage biochemical treatment system is characterized by comprising the following steps
Stage of installation
The method comprises the following steps: emptying sewage in a drainage pipeline in advance so that an operator can conveniently enter an inspection well for operation;
step two: a chain type guide rail is arranged in the detection well, and comprises a driving chain wheel, a driven pulley and a chain matched with the driving chain wheel and the driven pulley;
step three: fixing a single or a plurality of suspension brackets on the chain;
step four: installing a plurality of aeration heads of the biological membrane filler and the aeration component on a suspension type bracket, and connecting the aeration heads with a multistage air pump on the outer surface of the inspection well through air pipes;
step five: the driving chain wheel is driven to rotate by the motor, and then the chain is driven, so that the suspension type bracket is conveyed into the drainage pipeline;
step six: water normally enters the drainage pipeline;
and (3) an operation stage:
the method comprises the following steps: starting a multi-stage air pump to aerate each aeration head according to a set strength;
step two: the biomembrane filler realizes the in-situ purification of the sewage in the drainage pipeline by the transformation effect of microorganisms on pollutants in the sewage and the cooperation with different aeration and oxygenation effects of the aeration heads;
and (3) maintenance stage:
the method comprises the following steps: the driving chain wheel is reversely rotated by the motor, so that the suspension type bracket to be overhauled is conveyed out to the top of the inspection well along with the chain;
step two: the biological membrane filler and the aeration head are detached from the suspension type bracket and cleaned, overhauled or replaced;
step three: and the normal biological film filler and the aeration head are fixed on the suspension type bracket again, and the driving chain wheel is rotated by the motor, so that the repaired biological film filler is conveyed into the drainage pipeline along with the chain.
Furthermore, the chain type guide rail comprises a bearing frame, the bearing frame is provided with a driving chain wheel, a driven pulley and a chain matched with the driving chain wheel, the wheel surfaces of the driving chain wheel and the driven pulley are positioned on the same plane with the axis of the drainage pipeline, a motor is connected with the driving chain wheel and is used for driving the driving chain wheel to rotate so as to drive the chain to move, the driven pulley is provided with a wheel groove, the chain groove of the chain is meshed with the gear teeth of the driving chain wheel, and the outer side of the chain is clamped with the wheel groove of the driven pulley; the chain type guide rail is mounted in one of the following two ways:
firstly, a bearing frame, a fixed node, a frame base, a driving chain wheel and a driven pulley are all arranged in a detection well, so that a chain is in a double-strand U-shaped structure;
and secondly, a part of the bearing frame and the driving chain wheel are arranged above the detection well, and the fixed node, the frame base and the driven pulley are arranged in the detection well, so that the chain is in a single-strand mouth-shaped structure.
The invention fully utilizes the internal spaces of the inspection well and the drainage pipeline, realizes the transportation and arrangement of the biomembrane packing and the aeration component in the drainage pipeline through the exquisite design of the chain type guide rail and the suspension type bracket, and realizes the multi-stage AO biochemical treatment of the sewage through the coupling of the multi-stage blast intensity regulation and control of the aeration component and the characteristic of the tubular reactor of the drainage pipeline. Compared with the prior art, the invention has the outstanding characteristics of strong applicability, easy implementation, various functions, flexible operation, obvious effect and the like.
Compared with the prior art in the same field, the invention has the remarkable characteristics that:
1. high applicability
The system aims at the problem of in-situ purification of drainage pipelines, and can adapt to in-situ purification of drainage pipelines in different forms through reasonable layout of the chain type guide rail, the suspension type support, the biological membrane filler and the aeration assembly.
2. Is easy to implement
The existing space of the inspection well and the drainage pipeline is fully utilized to carry out simple transformation, the engineering measures are less, the investment scale is small, and the implementation and the popularization are easy.
3. Multiple functions
Through the multi-stage blast intensity regulation and control of the aeration component, the multi-stage aerobic and anoxic treatment of sewage in a drainage pipe type can be realized, so that various water purification functions such as organic matter degradation, denitrification and the like are realized; meanwhile, the aeration also has a disturbance effect on the sediment of the drainage pipeline, so that the accumulation of sludge in the pipeline can be effectively prevented; in addition, the sludge suspended by aeration disturbance can be adhered to the biological membrane, so that the membrane hanging effect of the biological membrane filler can be enhanced, and the concentration of suspended particulate matters in the sewage can be effectively reduced; when the biofilm filler is rich in microorganisms and sludge, the biofilm filler can be cleaned through maintenance, so that a drainage pipeline is not blocked.
4. The operation is flexible:
through the design of chain formula guide rail and suspension type support, can conveniently realize when the system starts with the arrangement of biomembrane filler and aeration subassembly from the inspection shaft outside to in the drainage pipe to and transport it from the drainage pipe is inside to the inspection shaft outside when overhauing.
5. The effect is obvious
Through the coupling with the tubular reactor characteristic of drainage pipe, realize that guide tracked multistage biochemical water purification system is to multistage, high-efficient purification of sewage in drainage pipe, with strong points, the effect is obvious, easily promote.
Drawings
FIG. 1 is a front view of a multi-stage biochemical treatment system for source sewage control of a drainage pipeline according to the present invention (chain type guide rails are installed in a "U-shaped" structure).
FIG. 2 is a front view of a multi-stage biochemical treatment system for source sewage control of a drainage pipeline according to the present invention (chain type guide rails are installed according to a "mouth-shaped" structure).
Fig. 3 is a front view of the chain track of the system of the present invention (the chain track is mounted in a "U" configuration).
Fig. 4 is a front view of the chain track of the system of the present invention (the chain track is mounted in a "slotted" configuration).
Fig. 5 is a front view of a suspended support with biofilm filler and aeration assemblies nested in the system of the present invention.
Fig. 6 is a side view of fig. 5.
The numbering in the figures means:
1-chain type guide rail, 11-supporting frame, 12-fixed node, 13-frame base, 14-driving chain wheel, 15-driven pulley, 16-chain, 17-motor;
2-a suspension type support, 21-a hook, 22-a frame top, 23-a buckle, 24-a filler net frame and 25-an aeration head frame;
3-biofilm packing;
4-aeration component, 41-air pipe, 42-aeration head;
5-the ground;
6-detecting the well;
7-sewage;
8-drainage pipeline.
Detailed Description
The invention is further described in detail with reference to the following specific examples and the accompanying drawings. The procedures, conditions, experimental methods and the like for carrying out the present invention are general knowledge and common general knowledge in the art except for the contents specifically mentioned below, and the present invention is not particularly limited.
A drainage pipeline source pollution control multi-stage biochemical treatment system is characterized in that,
the chain type guide rail 1 is arranged in the inspection well 6 and the drainage pipeline 8;
the suspension type bracket 2 is suspended on the chain type guide rail 1, and moves in the inspection well 6 and the drainage pipeline 8 along the chain type guide rail 1;
the biological membrane filler 3 is nested in the suspension type support 2, and the sewage 7 is purified through the enriched biological membrane;
the aeration component 4, the air pipe 41 and the aeration head 42 of the aeration component 4 are also nested in the suspension type bracket 2 and are used for carrying out multi-stage aeration oxygenation on the sewage 7.
As shown in fig. 1 and 2, 3 suspension brackets 2 are arranged on the chain type guide rail 1, a biological membrane filler 3 and an aeration head 42 are arranged below each suspension bracket 2, and the aeration head 42 is connected with an air pump on the ground through an air pipe 41.
Chain formula guide rail includes bearing frame 11, bearing frame 11 installs drive sprocket 14, driven pulley 15 and rather than complex chain 16, drive sprocket 14 and driven pulley 15's wheel face all is located the coplanar with drainage pipe 8's axis, motor 17 with drive sprocket 14 links to each other for it is rotatory to drive sprocket, thereby drives chain 16 and removes, and the race is established to driven pulley 15, the race interlock of the sprocket of chain 16 and drive sprocket 15, the outside of chain 16 then with driven pulley 15's race block. The supporting frame 11 and the side wall of the inspection well 6 are provided with fixed nodes 12, the fixed nodes 12 are the connection points of the supporting frame 11 and the side wall of the inspection well 6, and the connection mode is welding, bonding or expansion screw fixation; the bottom of the bearing frame 11 is provided with a frame base 13, the frame base 13 is arranged at the bottom of the inspection well 6, and the bottom surface of the frame base 13 is inosculated with the bottom surface of the inspection well 6. The driving chain wheel 14 is positioned at the top of the supporting frame 11, and the driven pulley 15 is positioned at the bottom of the supporting frame 11; the pitch of the driving chain wheel 14 is 5-8cm, and the tooth thickness is 3-5 cm; the width of the wheel groove of the driven pulley 15 is 2-4 cm, and the depth of the wheel groove is 3-4 cm; the wheel surfaces of the driving chain wheel 14 and the driven pulley 15 are positioned on the same plane with the axis of the drainage pipeline 6.
The chain type guide rail has two mounting modes:
first, as shown in fig. 3, the supporting frame 11, the fixing node 12, the frame base 13, the driving sprocket 14, and the driven pulley 15 are all installed in the inspection shaft 6, so that the chain 16 has a double-strand U-shaped structure;
second, as shown in fig. 4, a part of the support frame 11 and the driving sprocket 14 are installed above the manhole 6, and the fixing node 12, the frame base 13, and the driven pulley 15 are installed in the manhole 6, so that the chain 16 has a single-strand mouth structure.
As shown in fig. 5 and 6, the suspension bracket includes a top 22 and a hook 21 connected to the top 22, and the hook 21 passes through the pin of the chain 16, so as to connect the body to the chain 16; the bottom of the frame top 22 is provided with a buckle 23, a filler net frame 24 and an aeration head frame 25 are connected with the frame top 22 through the buckle 23, the biofilm fillers 3 are fixed on the filler net frame 24, and an aeration head 42 of the aeration assembly 4 is fixed at the bottom of the aeration head frame 25; the aeration head is connected with a multi-stage air pump outside the inspection well through an air pipe 41. The biomembrane filler 3 is braided, spherical, rectangular, cylindrical, disc-shaped, filiform, banded or melon-flake-shaped, and is made of PE, PP, RPP, PVC, CPVC, PVDF, terylene, sponge or agricultural and forestry waste; the biological membrane filler 3 comprises 2 membrane hanging modes of membrane hanging in advance and natural membrane hanging, so that microorganisms with a water quality purification function are enriched on the surface of the biological membrane filler.
The multistage air pump is provided with a plurality of air outlets with different blast intensities, and the air outlets are respectively connected with different aeration heads through air pipes, so that the multistage blast intensity regulation and control of the aeration component 4 are realized.
Furthermore, each suspension support is provided with 2 or more hooks 21 to limit the axial displacement of the suspension support 2 in the drain pipe 8; the upper part of the hook 21 is a hook-shaped object, the lower part is a connecting rod connected with the frame body 22, and the connecting rod needs to have a certain length so that the suspension type support 2 can smoothly pass through a right-angle bend when moving along with the chain.
The using method of the invention comprises
Stage of installation
The method comprises the following steps: emptying the sewage 7 in the drainage pipeline 8 in advance so that an operator can conveniently enter the inspection well 7 for operation;
step two: a chain type guide rail 1 is arranged in the detection well 6, and the chain type guide rail 1 comprises a driving chain wheel 14, a driven pulley 15 and a chain 16 matched with the driving chain wheel and the driven pulley 15;
step three: fixing the suspension brackets 2 or brackets to the chain 16;
step four: installing the biofilm fillers 3 and a plurality of aeration heads 42 of the aeration component 4 on the suspension type bracket 2, and connecting the aeration heads 42 with a multi-stage air pump on the ground 5 outside the inspection well 6 through an air pipe 41;
step five: the motor 17 drives the driving chain wheel 14 to rotate, and then drives the chain 16, so that the suspension type bracket 2 is conveyed to the inside of the drainage pipeline 8;
step six: the drainage pipeline 8 normally enters water;
and (3) an operation stage:
the method comprises the following steps: starting a multi-stage air pump to aerate each aeration head 42 according to a set strength;
step two: the biomembrane filler 3 realizes the in-situ purification of the sewage 7 in the drainage pipeline 8 by the transformation effect of microorganisms on pollutants in the sewage 7 and the cooperation with different aeration and oxygenation effects of the aeration heads 42;
and (3) maintenance stage:
the method comprises the following steps: the driving chain wheel 14 is reversely rotated by the motor 17, so that the suspension bracket 2 to be repaired is conveyed out to the top of the inspection well 6 along with the chain 16;
step two: the biological membrane filler 3 and the aeration head 42 are detached from the suspension type bracket 2, and the biological membrane filler is cleaned, overhauled or replaced;
step three: the normal biofilm packings 3 and the aeration heads 42 are fixed on the suspension type bracket 2 again, and the driving chain wheel 14 is rotated by the motor 17, so that the repaired biofilm packings 3 are conveyed into the drainage pipeline 8 along with the chain 16.
The practical effect of the implementation according to this example shows that after 48 hours of continuous operation of the system, the COD of the sewage in the inspection well downstream of the systemCrCompared with an upstream inspection well, the concentration is reduced by 90.15%, the ammonia nitrogen concentration is reduced by 72.8%, the total nitrogen concentration is reduced by 67.21%, and the total phosphorus concentration is reduced by 73.52%.
The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the invention without departing from the spirit and scope of the inventive concept, and the scope of the appended claims is intended to be protected.

Claims (10)

1. A drainage pipeline source pollution control multi-stage biochemical treatment system is characterized in that,
the chain type guide rail is arranged in the inspection well and the drainage pipeline;
the suspension type bracket is suspended on the chain type guide rail and moves in the inspection well and the drainage pipeline along the chain type guide rail;
the biological membrane filler is nested in the suspension type bracket and purifies sewage through an enriched biological membrane;
the aeration component, the air pipe and the aeration head of the aeration component are also nested in the suspension type support and are used for carrying out multi-stage aeration oxygenation on the sewage.
2. The multi-stage biochemical treatment system with pollution control for drain pipe source as claimed in claim 1, wherein the chain type guide rail comprises a supporting frame, the supporting frame is installed with a driving sprocket, a driven pulley and a chain matched with the driving sprocket and the driven pulley, the wheel faces of the driving sprocket and the driven pulley are located on the same plane with the axis of the drain pipe, a motor is connected with the driving sprocket and used for driving the driving sprocket to rotate so as to drive the chain to move, the driven pulley is provided with a wheel groove, the wheel groove of the chain is engaged with the wheel tooth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley.
3. The drain pipe source controlled biochemical sewage treatment system of claim 2, wherein the drive sprocket is located at the top of the support frame and the driven pulley is located at the bottom of the support frame; the pitch of the driving chain wheel is 5-8cm, and the tooth thickness is 3-5 cm; the width of a wheel groove of the driven pulley is 2-4 cm, and the depth of the wheel groove is 3-4 cm; the wheel surfaces of the driving chain wheel and the driven pulley and the axis of the drainage pipeline are located on the same plane.
4. The drain pipe source pollution control multistage biochemical treatment system according to claim 1, wherein the hanging bracket comprises a bracket top and a hook connected with the bracket top, the hook penetrates through a pin shaft of the chain, so that the bracket body is connected with the chain; the bottom of the frame top is provided with a buckle, the filler net rack and the aeration head frame are connected with the frame top through the buckle, the biofilm filler is fixed on the filler net rack, and the aeration head of the aeration component is fixed at the bottom of the aeration head frame; the aeration head is connected with a multistage air pump outside the inspection well through an air pipe.
5. The drain pipe pipeline source pollution control multistage biochemical treatment system according to claim 4, wherein each suspension bracket is provided with 2 or more hooks to limit axial displacement of the suspension bracket in the drain pipe; the upper part of the hook is a hook-shaped object, the lower part of the hook is a connecting rod connected with the frame body, and the connecting rod needs to have a certain length so that the suspension type support can smoothly pass through a right-angled bend when moving along with the chain; the biomembrane filler is braided, spherical, rectangular, cylindrical, disc-shaped, filiform, banded or melon-flake-shaped, and is made of PE, PP, RPP, PVC, CPVC, PVDF, terylene, sponge or agricultural and forestry waste; the biological membrane filler comprises 2 membrane hanging modes of membrane hanging in advance and natural membrane hanging, so that microorganisms with a water quality purification function are enriched on the surface of the biological membrane filler.
6. The multi-stage biochemical sewage-control treatment system for a drainage pipeline source according to claim 4, wherein the multi-stage air pump has a plurality of air outlets with different blowing intensities, and the air outlets are respectively connected with different aeration heads through air pipes, so as to realize multi-stage blowing intensity control of the aeration component.
7. The use method of the drainage pipeline source pollution control multistage biochemical treatment system is characterized by comprising the following steps
Stage of installation
The method comprises the following steps: emptying sewage in a drainage pipeline in advance so that an operator can conveniently enter an inspection well for operation;
step two: a chain type guide rail is arranged in the detection well, and comprises a driving chain wheel, a driven pulley and a chain matched with the driving chain wheel and the driven pulley;
step three: fixing a single or a plurality of suspension brackets on the chain;
step four: installing a plurality of aeration heads of the biological membrane filler and the aeration component on a suspension type bracket, and connecting the aeration heads with a multistage air pump on the outer surface of the inspection well through air pipes;
step five: the driving chain wheel is driven to rotate by the motor, and then the chain is driven, so that the suspension type bracket is conveyed into the drainage pipeline;
step six: water normally enters the drainage pipeline;
and (3) an operation stage:
the method comprises the following steps: starting a multi-stage air pump to aerate each aeration head according to a set strength;
step two: the biomembrane filler realizes the in-situ purification of the sewage in the drainage pipeline by the transformation effect of microorganisms on pollutants in the sewage and the cooperation with different aeration and oxygenation effects of the aeration heads;
and (3) maintenance stage:
the method comprises the following steps: the driving chain wheel is reversely rotated by the motor, so that the suspension type bracket to be overhauled is conveyed out to the top of the inspection well along with the chain;
step two: the biological membrane filler and the aeration head are detached from the suspension type bracket and cleaned, overhauled or replaced;
step three: and the normal biological film filler and the aeration head are fixed on the suspension type bracket again, and the driving chain wheel is rotated by the motor, so that the repaired biological film filler is conveyed into the drainage pipeline along with the chain.
8. The method of claim 7, wherein the chain track comprises a support frame, the support frame is provided with a driving sprocket, a driven pulley and a chain engaged with the driving sprocket and the driven pulley, the faces of the driving sprocket and the driven pulley are located on the same plane with the axis of the drainage pipeline, a motor is connected with the driving sprocket for driving the driving sprocket to rotate so as to drive the chain to move, the driven pulley is provided with a wheel groove, the chain groove of the chain is engaged with the teeth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley.
9. The method of claim 7, wherein the hanging bracket includes a top and a hook coupled to the top, the hook passing through a pin of the chain to couple the body to the chain; the bottom of the frame top is provided with a buckle, the filler net rack and the aeration head frame are connected with the frame top through the buckle, the biofilm filler is fixed on the filler net rack, and the aeration head of the aeration component is fixed at the bottom of the aeration head frame; the aeration head is connected with a multistage air pump outside the inspection well through an air pipe.
10. The method of claim 7, wherein the biofilm carrier is in the shape of a braid, sphere, rectangle, cylinder, disk, filament, ribbon, or melon sheet, and is PE, PP, RPP, PVC, CPVC, PVDF, dacron, sponge, or agricultural or forestry waste.
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