CN120328784A

CN120328784A - A modular assembled rural sewage treatment device

Info

Publication number: CN120328784A
Application number: CN202510554440.XA
Authority: CN
Inventors: 纪子军; 李安妮; 梁佳莉; 周茜; 黄泾岚
Original assignee: Guangxi Lantian Technology Co ltd
Current assignee: Guangxi Lantian Technology Co ltd
Priority date: 2025-04-29
Filing date: 2025-04-29
Publication date: 2025-07-18

Abstract

The invention is suitable for the technical field of sewage treatment, and provides a module assembled rural sewage treatment device which comprises a pretreatment unit, a stirring unit, a biological treatment unit, a deep treatment unit and a disinfection unit which are sequentially connected through a water conveying pipeline, and is provided with a water inlet pipe and a water outlet pipe. The pretreatment unit adopts a grid component to intercept floating matters in the sewage, and the stirring unit prevents the floating matters from precipitating. The biological treatment unit consists of anaerobic, anoxic and aerobic components, and respectively realizes macromolecular organic matter decomposition, denitrification and further organic matter degradation and nitrification. The advanced treatment unit removes suspended matters, colloid and organic impurities by using a multistage filtration technology. The disinfection unit combines chlorine dioxide and ultraviolet disinfection method to kill pathogenic microorganism in sewage, and ensure that the quality of the effluent meets the emission standard. The invention realizes high-efficiency sewage treatment effect and flexible environmental adaptability through the modularized design, and meets the sewage treatment requirement of rural areas.

Description

Module assembly type rural sewage treatment device

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a module-assembled rural sewage treatment device.

Background

With the development of rural economy and the improvement of resident living standard, the sewage discharge amount in rural areas is increased increasingly, and serious threat is caused to the environment.

Traditional sewage treatment facilities are difficult to adapt to the characteristics of decentralized rural areas, complex terrains and limited economic conditions.

These conventional systems typically require a large floor space, are expensive to construct, and are complex to operate and maintain, which presents significant challenges for implementation and maintenance in rural areas where skilled technicians are lacking.

In addition, traditional sewage treatment facilities still have the processing structure to arrange singlely, can't be efficient maintain the regulation, have the pollutant to get rid of inefficiency, adaptability poor limitation.

Therefore, in view of the above situation, there is an urgent need to develop a module-assembled rural sewage treatment apparatus to overcome the shortcomings in the current practical applications.

Disclosure of Invention

The invention aims to provide a module assembled rural sewage treatment device, which aims to solve the problems in the background technology.

The invention discloses a module assembled rural sewage treatment device which comprises a pretreatment unit, a stirring unit, a biological treatment unit, a deep treatment unit and a disinfection unit which are detachably connected in sequence through a water conveying pipeline, wherein the pretreatment unit and the disinfection unit are also respectively connected with a water inlet pipe and a water outlet pipe;

The pretreatment unit comprises a grid assembly for intercepting floats in sewage;

The stirring unit is used for preventing suspended matters in the sewage from precipitating, so that the sewage entering the biological treatment unit is kept in a relatively stable state;

The biological treatment unit comprises an anaerobic component, an anoxic component and an aerobic component which are sequentially connected, wherein the anaerobic component is used for decomposing macromolecular organic matters in sewage into micromolecular organic matters under the action of anaerobic microorganisms, the anoxic component is used for denitrifying the sewage, and the aerobic component is used for further decomposing the organic matters in the sewage into carbon dioxide and water and simultaneously realizing nitrification;

the advanced treatment unit is used for further removing suspended matters, colloid and organic impurities in the sewage in a multistage filtration mode;

the disinfection unit adopts a combination mode of chlorine dioxide disinfection and ultraviolet disinfection to disinfect the sewage treated by the advanced treatment unit and kill pathogenic microorganisms in the sewage.

Further technical scheme, pretreatment unit still includes the pretreatment case, the bottom of pretreatment case is fixed with the landing leg, and the grid subassembly is equipped with thickness two sets of in the inboard of pretreatment case, and the grid subassembly includes the frame of the inboard frame of being fixed in with pretreatment case and cooperation installation, the top of pretreatment case still is equipped with the lifter plate, and the both ends of lifter plate are fixed with the clearance push-and-pull jar, and the cylinder body of clearance push-and-pull jar and pretreatment case lateral wall fixed connection, the scraper blade of hollow structure is still slided to the both sides of grid, and the hole for water spraying has been seted up to one side of scraper blade, and the upside intercommunication of scraper blade is fixed with the lifter tube, and the lifter tube stretches out and its upper end and lifter plate fixed connection from the top of pretreatment case, the lifter tube still communicates with the cavity that the lifter plate inboard was seted up, be fixed with the water purification tank on the lateral wall of pretreatment case, water pump four is installed to the bottom in the water purification tank, and the export of water pump four is through delivery pipe and lifter plate's cavity intercommunication.

Further technical scheme, the stirring unit includes cylindrical barrel structure's agitator tank, and the inboard middle part rotation of agitator tank is installed (mixing) shaft first, and the top of agitator tank is fixed with the first motor of being connected with (mixing) shaft transmission, be fixed with multilayer puddler first on the (mixing) shaft first, the puddler circumference evenly distributed of each layer sets up a plurality ofly, and the even crisscross setting of puddler first of adjacent two-layer.

Further technical scheme, biological treatment unit still includes biological treatment case, and anaerobic subassembly, anoxic subassembly and good oxygen subassembly set gradually from the top down in biological treatment case's inboard.

Further technical scheme, anaerobic component is including locating the anaerobic chamber on the inboard upper portion of biological treatment case, and anaerobic biological filler has been filled to the inboard of anaerobic chamber, is connected with the aqueduct in the middle of the top of anaerobic chamber, and the bottom intermediate junction of anaerobic chamber has the outlet pipe, installs the solenoid valve on the outlet pipe, still be equipped with the side branch arris that is used for carrying out the support to the anaerobic chamber on the both sides inner wall of biological treatment case.

Further technical scheme, the oxygen deficiency subassembly includes the oxygen deficiency room that is fixed in biological treatment case inboard middle part through a piece support, and the bottom of oxygen deficiency room is the network structure, and the inboard of oxygen deficiency room is filled with suspension filler, and the inside middle part of oxygen deficiency room rotates installs (mixing) shaft two, and the bottom of oxygen deficiency room is fixed with motor two of being connected with (mixing) shaft two transmission, the upper end and the outlet pipe lower extreme rotation of (mixing) shaft two are connected, still install two-layer puddler two on the (mixing) shaft, and two circumference evenly distributed of puddler two on each layer sets up a plurality ofly, two-layer between the puddler two circumference on the (mixing) shaft two is distributed and is fixed with many sewage distribution pipes, and sewage distribution pipe still communicates with the outlet pipe through (mixing) shaft two inner chamber, many sewage distribution pipe and the puddler two on upper and lower both sides are evenly crisscross setting.

Further technical scheme, good oxygen subassembly is including being fixed in the net layer board one of the inboard lower part of biological treatment case, and net layer board one's upside is equipped with the biomembrane and packs, still is fixed with the otter board that flow equalizes between biomembrane packing and the motor two, net layer board one's bottom is fixed with many aeration pipes that take the hole, and the one end of aeration pipe is connected with the gas distribution board of fixing on the biological treatment case outer wall, still is fixed with the aeration equipment who is connected with the gas distribution board on the biological treatment case outer wall, still install the circulating pipe on the biological treatment case outer wall, install the circulating pump on the circulating pipe, the one end and the upside space bottom intercommunication of net layer board one of circulating pipe, the other end and the upside space intercommunication of the otter board that flow equalizes of circulating pipe.

According to a further technical scheme, the deep processing unit comprises a top plate, a bottom plate and a plurality of upright posts which are circumferentially distributed and fixed on the outer side between the top plate and the bottom plate, a plurality of deep processing boxes are longitudinally distributed and arranged between the top plate and the bottom plate, a net support plate II is fixed at the bottom of each deep processing box, lantern rings are fixed on the outer sides of the deep processing boxes, lantern rings fixed on the outer sides of the bottommost deep processing boxes are fixedly connected with the upright posts, lantern rings fixed on the outer sides of the rest deep processing boxes are slidably connected with the upright posts, springs are sleeved on the upright posts between two adjacent lantern rings, a bottom sealing cover is fixed at the bottom of each bottommost deep processing box, a top sealing cover is arranged on the upper side of each uppermost deep processing box, a plurality of pressing push-pull cylinders are circumferentially distributed and fixed on the top of each top sealing cover, the upper ends of the pressing push-pull cylinders are fixedly connected with the top plate, and materials filled in each deep processing box from top to bottom are large-grain quartz sand, fine sand, anthracite and activated carbon in sequence.

Further technical scheme, disinfection unit includes the disinfection case, the inboard longitudinal direction evenly distributed of disinfection case is fixed with a plurality of interior baffles, and the water hole has been seted up to the one end of interior baffle, and adjacent two cross water hole staggered distribution who sets up on the interior baffle, the ultraviolet ray disinfection lamp is all installed to the downside of interior top and interior baffle of disinfection case, still be fixed with the disinfectant branch pipe of the shape of falling U on the disinfection case, the both sides branch and the water hole coaxial setting of disinfectant branch pipe, the both sides branch of disinfectant branch pipe still with interior baffle fixed connection and correspond to extend to the water hole downside of bottommost, the disinfectant discharge hole has been seted up to corresponding water hole on the disinfectant branch pipe, the outside of disinfection case is fixed with the disinfectant jar, and the disinfectant jar is through disinfectant house steward and disinfectant leg joint.

According to a further technical scheme, the water conveying pipeline comprises a water conveying pipe five, a water conveying pipe one, a water conveying pipe two, a flexible pipe, a water conveying pipe three and a water conveying pipe four, one end of the water conveying pipe five is detachably connected with the pretreatment box, the water conveying pipe five corresponds to the lower part of the grid, and the other end of the water conveying pipe five is detachably connected with the upper part of the stirring box; the water pump I is arranged on the water pipe I, one end of the water pipe I is detachably connected with the lower part of the stirring box, the other end of the water pipe I extends into the biological treatment box and is detachably connected with the water guide pipe, the water pipe II is arranged on the water pipe II, one end of the water pipe II is detachably connected with the biological treatment box, the water pipe II is communicated with the bottom of the lower side space of the net supporting plate I, the other end of the water pipe II is connected with the water pipe III through a flexible pipe, one end of the water pipe III, far away from the flexible pipe, is detachably arranged in the middle of the top sealing cover, the water pump I is arranged on the water pipe IV, one end of the water pipe IV is detachably connected with the middle of the bottom sealing cover, the other end of the water pipe IV is detachably connected with the disinfection box, the water pipe IV is communicated with the upper side space of the uppermost inner partition plate, the water inlet pipe is connected with the inner side upper part of the pretreatment box, the water inlet pipe and the water pipe V are respectively located at two ends of the pretreatment box, the water pipe is communicated with the bottom of the lower side space of the lowermost inner partition plate, and the water pipe V and the water pipe IV is respectively located at two sides of the disinfection box.

The module assembly type rural sewage treatment device provided by the invention has the following beneficial effects:

The sewage is input through a water inlet pipe, is discharged through a water outlet pipe after being treated, and sequentially passes through a pretreatment unit, a stirring unit, a biological treatment unit, a deep treatment unit and a disinfection unit for sewage treatment, wherein the pretreatment unit can intercept a grid component of floating matters in the sewage, the stirring unit can prevent the floating matters in the sewage from precipitating, so that the sewage entering the biological treatment unit is kept in a relatively stable state, the anaerobic component of the biological treatment unit can decompose macromolecular organic matters in the sewage into micromolecular organic matters under the action of anaerobic microorganisms, the anoxic component can denitrify and denitrify the sewage, the aerobic component can further decompose the organic matters in the sewage into carbon dioxide and water, and simultaneously realize nitrification, the deep treatment unit can further remove the suspended matters, colloid and organic matter impurities in the sewage in a multistage filtration mode, and finally the disinfection unit adopts a combined mode of chlorine dioxide disinfection and ultraviolet disinfection to disinfect the sewage treated by the deep treatment unit, and kill pathogenic microorganisms in the sewage.

In conclusion, the module assembled rural sewage treatment device realizes efficient sewage treatment effect and flexible environmental adaptability through the modular design, reduces cost and simplifies maintenance work, and meets the requirements of rural area sewage treatment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a module-assembled rural sewage treatment device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the rear view angle structure of FIG. 1;

FIG. 3 is an isometric view of a pretreatment unit in a modular rural sewage treatment unit according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

fig. 5 is an isometric view of a stirring unit in a module-assembled rural sewage treatment device according to an embodiment of the present invention;

FIG. 6 is an isometric view of a biological treatment unit in a modular rural sewage treatment apparatus according to an embodiment of the present invention;

FIG. 7 is an isometric view of a depth treatment unit in a modular rural sewage treatment apparatus according to an embodiment of the present invention;

fig. 8 is an isometric view of a disinfection unit in a module-assembled rural sewage treatment apparatus according to an embodiment of the present invention;

fig. 9 is an enlarged schematic view of the portion B in fig. 8.

In the figure: 1-cleaning push-pull cylinder, 2-pretreatment box, 3-lifting pipe, 4-lifting plate, 5-water supply pipe, 6-motor I, 7-water pipe I, 8-biological treatment box, 9-water pipe II, 10-flexible pipe, 11-top plate, 12-water pipe III, 13-compacting push-pull cylinder, 14-water pipe IV, 15-disinfectant branch pipe, 16-disinfectant main pipe, 17-disinfection box, 18-disinfectant tank, 19-water drain pipe, 20-water pump I, 21-bottom plate, 22-upright post, 23-bottom sealing cover, 24-water pump II, 25-air distribution plate, 26-aeration device, 27-water pump III, 28-stirring box, 29-water pipe V, 30-supporting leg, 31-maintenance port I, 32-a water purifying tank, 33-a lantern ring, 34-a deep processing box, 35-a top sealing cover, 36-a second maintenance port, 37-a circulating pipe, 38-a circulating pump, 39-a water inlet pipe, 40-a cavity, 41-a grid, 42-an outer frame, 43-a scraper, 44-a water spraying hole, 45-a first stirring shaft, 46-a first stirring rod, 47-a water guide pipe, 48-an anaerobic chamber, 49-an anaerobic biological filler, 50-a side branch edge, 51-a branch block, 52-a solenoid valve, 53-an anoxic chamber, 54-a second stirring rod, 55-a second stirring shaft, 56-a sewage distribution pipe, 57-a second motor, 58-a flow equalizing screen, 59-a first net supporting plate, 60-an aeration pipe and 61-a biological film filler, 62-a third maintenance port, 63-a second net supporting plate, 64-an inner partition plate, 65-an ultraviolet disinfection lamp, 66-a water passing hole and 67-a disinfectant discharging hole.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Specific implementations of the invention are described in detail below in connection with specific embodiments.

As shown in fig. 1-2, the module-assembled rural sewage treatment device provided by an embodiment of the invention comprises a pretreatment unit, a stirring unit, a biological treatment unit, a deep treatment unit and a disinfection unit which are detachably connected in sequence through a water conveying pipeline, wherein the pretreatment unit and the disinfection unit are also respectively connected with a water inlet pipe 39 and a water outlet pipe 19.

The pretreatment unit includes a grating assembly for intercepting floats in the wastewater.

The stirring unit is used for preventing suspended matters in the sewage from precipitating, so that the sewage entering the biological treatment unit is kept in a relatively stable state.

The biological treatment unit comprises an anaerobic component, an anoxic component and an aerobic component which are sequentially connected, wherein the anaerobic component is used for decomposing macromolecular organic matters in sewage into micromolecular organic matters under the action of anaerobic microorganisms, the anoxic component is used for denitrifying the sewage, and the aerobic component is used for further decomposing the organic matters in the sewage into carbon dioxide and water and simultaneously realizing nitrification.

The advanced treatment unit is used for further removing suspended matters, colloid and organic impurities in the sewage in a multistage filtration mode.

In the embodiment of the invention, sewage is input through the water inlet pipe 39 and is discharged through the water outlet pipe 19 after being treated, and the sewage is treated through the pretreatment unit, the stirring unit, the biological treatment unit, the advanced treatment unit and the disinfection unit in sequence, wherein the pretreatment unit can intercept a grid component of floating matters in the sewage, the stirring unit can prevent the floating matters in the sewage from precipitating, so that the sewage entering the biological treatment unit is kept in a relatively stable state, the anaerobic component of the biological treatment unit can decompose macromolecular organic matters in the sewage into micromolecular organic matters under the action of anaerobic microorganisms, the anoxic component can denitrify the sewage, the aerobic component can further decompose the organic matters in the sewage into carbon dioxide and water, simultaneously realize nitrification, the advanced treatment unit can further remove the suspended matters, colloid and organic matters impurities in the sewage through a multistage filtration mode, and finally the disinfection unit adopts a combined mode of chlorine dioxide disinfection and ultraviolet disinfection to disinfect the sewage treated by the advanced treatment unit, thereby killing pathogenic microorganisms in the sewage.

As shown in fig. 1-4, as a preferred embodiment of the present invention, the pretreatment unit further includes a pretreatment tank 2, the bottom of the pretreatment tank 2 is fixed with a supporting leg 30, the inner side of the pretreatment tank 2 is provided with two groups of thick and thin grille components, the grille components include an outer frame 42 fixedly connected with the inner wall of the pretreatment tank 2 and a grille 41 cooperatively installed and fixed on the inner side of the outer frame 42, a lifting plate 4 is further provided above the pretreatment tank 2, two ends of the lifting plate 4 are fixed with cleaning push-pull cylinders 1, a cylinder body of the cleaning push-pull cylinders 1 is fixedly connected with the side wall of the pretreatment tank 2, two sides of the grille 41 are also slidingly provided with hollow structure scrapers 43, water spraying holes 44 are provided on one side of the scrapers 43 facing the grille 41, the upper sides of the scrapers 43 are fixedly connected with lifting pipes 3, the lifting pipes 3 are slidingly extended from the top of the pretreatment tank 2 and are fixedly connected with the lifting plate 4, the lifting pipes 3 are also communicated with cavities 40 provided on the inner side of the lifting plate 4, water purifying tanks 32 are fixed on the side walls of the pretreatment tank 2, and the four water purifying tanks 32 are not shown in communication with the cavities 40 through water pump outlets 5.

Wherein, the side bottom of pretreatment case 2 still is equipped with a plurality of maintenance mouths one 31, conveniently clears up the discharge to the filth of pretreatment case 2 inboard bottom deposit.

For the pretreatment unit, the coarse and fine gratings 41 are used for intercepting large-sized floats and small-sized floats in sewage, so that the large-sized floats and the small-sized floats are prevented from blocking and damaging subsequent treatment equipment. The arrangement of the outer frame 42 facilitates the deposition and storage of the contaminants. When the grille 41 needs to be cleaned, the cleaning push-pull cylinder 1 can be started to stretch and retract and the water pump is used for four water delivery, so that the scraper 43 can be used for scraping the adhesion on the surface of the grille 41, and meanwhile, the grille 41 can be cleaned through the water sprayed out of the water spraying holes 44, and long-term and efficient application of the grille 41 is facilitated.

As shown in fig. 1 and 5, as a preferred embodiment of the present invention, the stirring unit includes a stirring tank 28 with a cylindrical barrel structure, a stirring shaft one 45 is rotatably installed in the middle of the inner side of the stirring tank 28, a motor one 6 in driving connection with the stirring shaft one 45 is fixed on the top of the stirring tank 28, a plurality of stirring rods one 46 are fixed on the stirring shaft one 45, a plurality of stirring rods one 46 of each layer are uniformly distributed in the circumferential direction, and stirring rods one 46 of two adjacent layers are uniformly staggered.

For the stirring unit, a medicine addition port (not shown) may be provided at the top of the stirring tank 28, auxiliary treatment medicines and the like may be added as needed. The first stirring rod 46 is driven to rotate by the first motor 6, so that the water quality and the water quantity of the sewage can be regulated, and the sewage entering the biological treatment unit can be kept in a relatively stable state, such as preventing suspended matters in the sewage from precipitating.

As shown in fig. 1,2 and 6, as a preferred embodiment of the present invention, the biological treatment unit further comprises a biological treatment tank 8, an anaerobic component, an anoxic component and an aerobic component are sequentially disposed inside the biological treatment tank 8 from top to bottom, the anaerobic component comprises an anaerobic chamber 48 disposed at the upper part of the inside of the biological treatment tank 8, anaerobic biological filler 49 is filled inside the anaerobic chamber 48, a water guide pipe 47 is connected to the middle of the top of the anaerobic chamber 48, a water outlet pipe is connected to the middle of the bottom of the anaerobic chamber 48, an electromagnetic valve 52 is mounted on the water outlet pipe, and side branch ribs 50 for supporting the anaerobic chamber 48 are further disposed on the inner walls of both sides of the biological treatment tank 8. Wherein, the upper part of the side wall of the biological treatment box 8 is provided with a second maintenance port 36 corresponding to the anaerobic chamber 48, thereby facilitating maintenance of the anaerobic chamber 48. Through the arrangement of the anaerobic component, macromolecular organic matters in the sewage are decomposed into micromolecular organic matters under the action of anaerobic microorganisms.

The anaerobic component comprises an anaerobic chamber 53 which is supported and fixed on the middle part of the inner side of the biological treatment tank 8 through a supporting block 51, the bottom of the anaerobic chamber 53 is of a net structure, suspended filler (not shown) is filled in the inner side of the anaerobic chamber 53, a stirring shaft II 55 is rotatably installed in the middle part of the inner side of the anaerobic chamber 53, a motor II 57 which is in transmission connection with the stirring shaft II 55 is fixed at the bottom of the anaerobic chamber 53, two layers of stirring rods II 54 are rotatably connected with the lower end of a water outlet pipe at the upper end of the stirring shaft II 55, a plurality of stirring rods II 54 of each layer are uniformly distributed in the circumferential direction, a plurality of sewage distribution pipes 56 are fixedly distributed in the circumferential direction of the stirring shaft II 55 between the stirring rods II 54, the sewage distribution pipes 56 are also communicated with the water outlet pipe through the inner cavity of the stirring shaft II 55, and the plurality of sewage distribution pipes 56 are uniformly and the stirring rods II 54 at the upper side and lower side of the stirring shaft II 54 are uniformly staggered, so that the stirring and uniformly mixing effect is improved. Wherein access ports (not shown) for replacement of suspended fillers may be provided on the side walls of the biological treatment tank 8 as desired. Through the setting of anoxic assembly, solenoid valve 52 opens and can carry sewage to (mixing) shaft two 55, then discharges into the inner chamber of anoxic chamber 53 through pivoted sewage distribution pipe 56, and sewage fully contacts with the suspension filler, accomplishes denitrification process.

The aerobic component comprises a first net supporting plate 59 fixed on the lower portion of the inner side of the biological treatment box 8, a biological film filling material 61 is arranged on the upper side of the first net supporting plate 59, a flow equalizing screen 58 is further fixed between the biological film filling material 61 and a second motor 57, a plurality of aeration pipes 60 with holes are fixed on the bottom of the first net supporting plate 59, one ends of the aeration pipes 60 are connected with an air distribution plate 25 fixed on the outer wall of the biological treatment box 8, an aeration device 26 connected with the air distribution plate 25 is further fixed on the outer wall of the biological treatment box 8, a circulating pipe 37 is further installed on the outer wall of the biological treatment box 8, a circulating pump 38 is installed on the circulating pipe 37, one end of the circulating pipe 37 is communicated with the bottom of the upper space of the first net supporting plate 59, and the other end of the circulating pipe 37 is communicated with the upper space of the flow equalizing screen 58. The side wall of the biological treatment box 8 is also provided with a third maintenance port 62 corresponding to the upper side space of the first net supporting plate 59, so that the biological film filler 61 is convenient to maintain and replace, and the holes of the flow equalizing net plate 58 are arranged to ensure that the biological film filler 61 passes through, so that a certain uniform distribution effect is achieved. Through the arrangement of the aerobic component, the aeration pipe 60 is used for providing sufficient oxygen for aerobic microorganisms, and the aerobic microorganisms further decompose organic matters in the sewage into carbon dioxide and water, and simultaneously realize nitrification. In addition, by arranging the circulation pipe 37 and the circulation pump 38, the mixed liquid can be pumped from the bottom, and then sprayed from the upper part and forms high-speed circulation to realize filler fluidization and full mixing of the mixed liquid at the upper part and the lower part, thereby improving mass transfer efficiency.

Preferably, the biomembrane filler 61 is made of polyurethane or polyethylene, the specific surface area is more than or equal to 800m < 2 >/m < 3 >, the porosity is 90% -95%, so as to enhance the microorganism adhesion capability, the suspended filler is porous spherical filler, the diameter is 10-15mm, the density is slightly less than that of water, and the sufficient contact of sewage in a fluidization state is ensured.

As shown in fig. 1, 2 and 7, as a preferred embodiment of the present invention, the deep processing unit includes a top plate 11, a bottom plate 21, and a plurality of columns 22 circumferentially distributed and fixed on the outer side between the top plate 11 and the bottom plate 21, a plurality of deep processing boxes 34 are longitudinally distributed and arranged between the top plate 11 and the bottom plate 21, a mesh pallet 63 is fixed at the bottom of the deep processing box 34, a collar 33 is fixed on the outer side of the deep processing box 34, the collar 33 fixed on the outer side of the lowest deep processing box 34 is fixedly connected with the columns 22, the collars 33 fixed on the outer side of the rest of the deep processing box 34 are slidably connected with the columns 22, springs (not shown) are sleeved on the columns 22 between two adjacent collars 33, a bottom sealing cover 23 is fixed at the bottom of the lowest deep processing box 34, a top sealing cover 35 is circumferentially distributed and fixed on the top of the top sealing cover 35, a plurality of pressing push-pull cylinders 13 are fixedly connected with the top plate 11, the material filled in the deep processing box 34 from below is sequentially in large size, the large size and soft coal, the soft coal and the fine suspended substances have high-suspended substances have high water particle diameters, and high-quality suspended substances have high water particle diameters, and high water particle diameters can be removed, and high-quality suspended substances have high water particle diameters, and high water particle diameters can be absorbed, and suspended substances have high water particle diameters can be removed, and suspended substances have high particle diameters and water quality substances. Wherein, a sealing ring (not shown) is further arranged at the top of the deep processing box 34, which ensures the tightness of the abutting joint and avoids water leakage.

For the advanced treatment unit, the tight abutting and separation after release of the advanced treatment box 34 can be realized through the arrangement of the telescopic collocation springs of the compression push-pull cylinder 13, so that the advanced treatment box 34 is cleaned and maintained, namely, the filter medium is convenient to replace and maintain regularly. And the multi-layer filtering technology is adopted to further remove suspended matters, colloid, organic matters and other impurities in the sewage, so that the quality of the effluent is improved.

As shown in fig. 1-2 and 8-9, as a preferred embodiment of the present invention, the disinfection unit includes a disinfection tank 17, a plurality of inner partition boards 64 are uniformly distributed and fixed on the inner side of the disinfection tank 17, water holes 66 are formed at one end of each inner partition board 64, water holes 66 formed on two adjacent inner partition boards 64 are distributed in a staggered manner, ultraviolet disinfection lamps 65 are respectively mounted on the inner top of the disinfection tank 17 and the lower side of each inner partition board 64, disinfection branch pipes 15 with inverted U shape are also fixed on the disinfection tank 17, two side branches of the disinfection branch pipes 15 are coaxially arranged with the water holes 66, two side branches of the disinfection branch pipes 15 are fixedly connected with the inner partition boards 64 and extend to the lower side of the lowest water hole 66 correspondingly, disinfection discharge holes 67 are formed on the disinfection branch pipes 15 corresponding to the water holes 66, disinfection tanks 18 are fixed on the outer side of the disinfection tank 17, and the disinfection tanks 18 are connected with the branch pipes 15 through a disinfection main pipe 16.

Through the arrangement of the disinfection unit, the sewage after advanced treatment is disinfected by adopting a chlorine dioxide disinfection and ultraviolet disinfection mode, and pathogenic microorganisms in the sewage are killed, so that the effluent is ensured to reach the specified emission standard. The collocation setting of interior baffle 64 and ultraviolet disinfection lamp 65 for sewage fully stops, promotes disinfection quality, and disinfectant discharge hole 67 corresponds water hole 66 setting, can reliably and abundant carry out chlorine dioxide disinfection.

As shown in fig. 1to 9, as a preferred embodiment of the present invention, the water pipe includes a water pipe five 29, a water pipe one 7, a water pipe two 9, a flexible pipe 10, a water pipe three 12 and a water pipe four 14, one end of the water pipe five 29 is detachably connected with the pretreatment tank 2, the water pipe five 29 corresponds to the lower part of the grid 41, and the other end of the water pipe five 29 is detachably connected with the upper part of the stirring tank 28; the water pump III 27 is arranged on the water pipe I7, one end of the water pipe I7 is detachably connected with the lower part of the stirring box 28, the other end of the water pipe I7 extends into the biological treatment box 8 and is detachably connected with the water guide pipe 47, the water pump II 24 is arranged on the water pipe II 9, one end of the water pipe II 9 is detachably connected with the biological treatment box 8, the water pipe II 9 is communicated with the bottom of the lower side space of the net supporting plate I59, the other end of the water pipe II 9 is connected with the water pipe III 12 through the flexible pipe 10, one end of the water pipe III 12 far away from the flexible pipe 10 is detachably arranged in the middle of the top sealing cover 35, the water pump I20 is arranged on the water pipe IV 14, one end of the water pipe IV 14 is detachably connected with the middle of the bottom sealing cover 23, the other end of the water pipe IV 14 is detachably connected with the disinfection box 17, and the water pipe IV 14 is communicated with the upper side space of the uppermost inner partition plate 64. In addition, the water inlet pipe 39 is connected with the upper part of the inner side of the pretreatment tank 2, the water inlet pipe 39 and the water delivery pipe five 29 are respectively positioned at two ends of the pretreatment tank 2, the thick and thin grids 41 are correspondingly arranged, and the details are omitted, the water outlet pipe 19 is communicated with the bottom of the space at the lower side of the lowest inner partition plate 64, the water outlet pipe 19 and the water delivery pipe four 14 are respectively positioned at two sides of the disinfection tank 17, the water delivery holes 66 are correspondingly formed, and the water body residence time is prolonged to the greatest extent.

Each processing unit adopts a prefabricated assembly structure, completes the manufacture and assembly of the module in a factory, and then is transported to a construction site for quick installation. The connection between the units can adopt standardized connection modes, such as bolt connection, clamp connection and the like, so that firm connection and reliable sealing are ensured. Meanwhile, components and the like inside each unit are also in modularized design, so that the maintenance and the replacement are convenient. For example, each processing unit adopts a standardized flange interface to allow quick disassembly and recombination, and a buffer space is reserved between the preprocessing unit and the stirring unit to adapt to the height difference changes of different terrains.

Through tests, the combination of the thick and thin grids 41 can intercept floaters with the diameter more than or equal to 2mm, the interception efficiency reaches 95%, and after the scraper 43 is cleaned by spraying water, the blocking rate of the grids 41 is reduced by 80%.

Under the condition that the total nitrogen concentration of the inlet water is 50mg/L, the denitrification efficiency of the anoxic assembly is 85 percent, the nitrification efficiency of the aerobic assembly is 90 percent, and the total nitrogen concentration of the outlet water after combined treatment is less than or equal to 8mg/L, thereby conforming to the water pollutant discharge standard of rural domestic sewage treatment facilities.

The dosage of chlorine dioxide in the disinfection unit is 2mg/L, and when the ultraviolet dose is 40mJ/cm < 2 >, the inactivation rate of the escherichia coli is more than or equal to 99.99 percent, and the coliform count of the effluent manure is less than or equal to 100CFU/L.

The embodiment of the invention provides a module assembled rural sewage treatment device, which has the following working principle:

The sewage first enters the pretreatment tank 2 through the water inlet pipe 39, wherein the coarse and fine grids 41 intercept large and small suspended matters in the sewage to prevent subsequent equipment from being blocked. The scraper 43 and the cleaning push-pull cylinder 1 are arranged in the pretreatment box, so that the grille can be cleaned and maintained.

The preliminarily filtered sewage flows into the stirring tank 28 through the water pipe five 29. In the stirring unit, the first motor 6 drives the first stirring shaft 45 and the first stirring rod 46 on the first stirring shaft to rotate so as to keep the sewage uniform, prevent suspended matters from precipitating and ensure that the water quality is relatively stable and then enters the biological treatment unit.

The sewage flows through the anaerobic chamber 48, the anoxic chamber 53 and the aerobic assembly in this order. In the anaerobic chamber 48, the anaerobic microorganisms decompose macromolecular organic substances in the sewage into small molecular organic substances. In the anoxic chamber 53, the sewage fully contacts with the suspended filler under the action of the stirring shaft II 55 and the stirring rod II 54 to complete the denitrification process. In the aerobic module, the aeration pipe 60 supplies oxygen to the aerobic microorganisms to further decompose organic matters and realize nitrification.

The water flowing out of the biological treatment unit enters the advanced treatment unit, wherein the multistage filtration technology comprises large-particle quartz sand, fine sand, anthracite and activated carbon to remove finer suspended matters, colloid and organic matters, so that the water outlet quality is improved.

Finally, the treated sewage enters a sterilizing box 17, and is sterilized by chlorine dioxide and ultraviolet sterilizing lamps 65 to kill pathogenic microorganisms. The treated water is discharged through a drain pipe 19.

In conclusion, the invention realizes efficient sewage treatment effect and flexible environmental adaptability through the modularized design, reduces the cost, simplifies the maintenance work and meets the sewage treatment requirement in rural areas.

The control of each component is realized by adopting a controller disclosed in the prior art, the model and circuit connection of each component are not particularly limited, and the components can be flexibly arranged in practical application. The intelligent control system can be provided as required, so that the water quality and the water quantity of the sewage and various parameters (such as dissolved oxygen, pH value, oxidation-reduction potential and the like) in the treatment process can be monitored in real time, the running state of the equipment can be automatically regulated according to the monitored data, and the automatic control of the sewage treatment process can be realized, and the method is not limited and repeated. For example, the electromagnetic valve 52 is linked with the circulating pump 38 through a controller, when the concentration of the dissolved oxygen in the anoxic chamber 53 is lower than 0.5mg/L, the electromagnetic valve 52 is opened, the circulating pump 38 is started at the same time, so that the denitrification reaction is ensured to be carried out efficiently, and the aeration device 26 dynamically adjusts the aeration amount according to the feedback of a dissolved oxygen sensor (not shown) in the aerobic component, so as to maintain the concentration of the dissolved oxygen at 2-4mg/L.

The related circuits, electronic components and modules are all in the prior art, and can be completely implemented by those skilled in the art, and needless to say, the protection of the present invention does not relate to improvements of software and methods.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The module assembled rural sewage treatment device is characterized by comprising a pretreatment unit, a stirring unit, a biological treatment unit, a deep treatment unit and a disinfection unit which are detachably connected in sequence through a water conveying pipeline, wherein the pretreatment unit and the disinfection unit are also respectively connected with a water inlet pipe (39) and a water outlet pipe (19);

2. The module-assembled rural sewage treatment device according to claim 1, wherein the pretreatment unit further comprises a pretreatment tank (2), the bottom of the pretreatment tank (2) is fixedly provided with a supporting leg (30), the inner side of the pretreatment tank (2) is provided with two groups of thick and thin grating components, and the grating components comprise an outer frame (42) fixedly connected with the inner wall of the pretreatment tank (2) and a grating (41) which is matched and installed and fixed on the inner side of the outer frame (42);

A lifting plate (4) is further arranged above the pretreatment box (2), two ends of the lifting plate (4) are fixedly provided with cleaning push-pull cylinders (1), and a cylinder body of each cleaning push-pull cylinder (1) is fixedly connected with the side wall of the pretreatment box (2);

the two sides of the grid (41) are also provided with scrapers (43) with hollow structures in a sliding way, water spraying holes (44) are formed in one side, facing the grid (41), of each scraper (43), the upper side of each scraper (43) is fixedly communicated with a lifting pipe (3), each lifting pipe (3) extends out of the top of the pretreatment box (2) in a sliding way, the upper ends of the lifting pipes are fixedly connected with the lifting plates (4), and each lifting pipe (3) is also communicated with a cavity (40) formed in the inner side of each lifting plate (4);

A water purifying tank (32) is fixed on the side wall of the pretreatment tank (2), a water pump IV is arranged at the inner bottom of the water purifying tank (32), and an outlet of the water pump IV is communicated with a cavity (40) of the lifting plate (4) through a water supply pipe (5).

3. The module-assembled rural sewage treatment device according to claim 2, wherein the stirring unit comprises a stirring box (28) with a cylindrical barrel structure, a stirring shaft I (45) is rotatably arranged in the middle of the inner side of the stirring box (28), and a motor I (6) in transmission connection with the stirring shaft I (45) is fixed at the top of the stirring box (28);

A plurality of stirring rods (46) are fixed on the stirring shaft (45), the stirring rods (46) of each layer are uniformly distributed in the circumferential direction, and the stirring rods (46) of two adjacent layers are uniformly staggered.

4. A module-assembled rural sewage treatment unit according to claim 3, wherein the biological treatment unit further comprises a biological treatment tank (8), and the anaerobic assembly, the anoxic assembly and the aerobic assembly are sequentially arranged inside the biological treatment tank (8) from top to bottom.

5. The module-assembled rural sewage treatment device according to claim 4, wherein the anaerobic assembly comprises an anaerobic chamber (48) arranged at the upper part of the inner side of the biological treatment tank (8), anaerobic biological filler (49) is filled in the inner side of the anaerobic chamber (48), a water guide pipe (47) is connected in the middle of the top of the anaerobic chamber (48), a water outlet pipe is connected in the middle of the bottom of the anaerobic chamber (48), and an electromagnetic valve (52) is arranged on the water outlet pipe;

side branch edges (50) for supporting the anaerobic chamber (48) are also arranged on the inner walls of the two sides of the biological treatment box (8).

6. The module-assembled rural sewage treatment device according to claim 5, wherein the anoxic assembly comprises an anoxic chamber (53) supported and fixed at the middle part of the inner side of the biological treatment tank (8) through a supporting block (51), the bottom of the anoxic chamber (53) is of a net structure, and the inner side of the anoxic chamber (53) is filled with suspended filler;

A stirring shaft II (55) is rotatably arranged in the middle of the inner side of the anoxic chamber (53), and a motor II (57) in transmission connection with the stirring shaft II (55) is fixed at the bottom of the anoxic chamber (53);

the upper end of the stirring shaft II (55) is rotationally connected with the lower end of the water outlet pipe, two layers of stirring rods II (54) are also fixedly arranged on the stirring shaft II (55), and a plurality of stirring rods II (54) of each layer are uniformly distributed in the circumferential direction;

A plurality of sewage distribution pipes (56) are circumferentially distributed and fixed on the stirring shaft II (55) between the two layers of stirring rods II (54), and the sewage distribution pipes (56) are also communicated with a water outlet pipe through the inner cavity of the stirring shaft II (55);

The sewage distribution pipes (56) and stirring rods (54) on the upper side and the lower side are uniformly staggered.

7. The module-assembled rural sewage treatment device according to claim 6, wherein the aerobic component comprises a first net support plate (59) fixed at the lower part of the inner side of the biological treatment tank (8), a biological film filler (61) is arranged at the upper side of the first net support plate (59), and a flow equalizing screen plate (58) is also fixed between the biological film filler (61) and a second motor (57);

A plurality of aeration pipes (60) with holes are fixed at the bottom of the first net supporting plate (59), one end of each aeration pipe (60) is connected with a gas distribution plate (25) fixed on the outer wall of the biological treatment box (8), and an aeration device (26) connected with the gas distribution plate (25) is also fixed on the outer wall of the biological treatment box (8);

the biological treatment tank (8) is characterized in that a circulating pipe (37) is further arranged on the outer wall of the biological treatment tank (8), a circulating pump (38) is arranged on the circulating pipe (37), one end of the circulating pipe (37) is communicated with the bottom of the upper side space of the first net supporting plate (59), and the other end of the circulating pipe (37) is communicated with the upper side space of the flow equalizing net plate (58).

8. The module-assembled rural sewage treatment unit according to claim 7, wherein the advanced treatment unit comprises a top plate (11) and a bottom plate (21) and a plurality of upright posts (22) circumferentially distributed and fixed on the outer side between the top plate (11) and the bottom plate (21);

a plurality of deep processing boxes (34) are longitudinally distributed between the top plate (11) and the bottom plate (21), a second net supporting plate (63) is fixed at the bottom of the deep processing boxes (34), and a lantern ring (33) is fixed at the outer side of the deep processing boxes (34);

The lantern ring (33) fixed at the outer side of the lowest deep processing box (34) is fixedly connected with the upright post (22), and the lantern rings (33) fixed at the outer sides of the rest deep processing boxes (34) are in sliding connection with the upright post (22);

Springs are sleeved on the upright posts (22) between two adjacent lantern rings (33);

A bottom sealing cover (23) is fixed at the bottom of the bottommost deep processing box (34), a top sealing cover (35) is arranged on the upper side of the topmost deep processing box (34), a plurality of compression push-pull cylinders (13) are circumferentially distributed and fixed at the top of the top sealing cover (35), and the upper ends of the compression push-pull cylinders (13) are fixedly connected with the top plate (11);

The materials filled in the deep processing box (34) from top to bottom are large-particle quartz sand, fine sand, anthracite and active carbon in sequence.

9. The module-assembled rural sewage treatment device according to claim 8, wherein the disinfection unit comprises a disinfection box (17), a plurality of inner partition plates (64) are longitudinally and uniformly distributed and fixed on the inner side of the disinfection box (17), water passing holes (66) are formed in one end of each inner partition plate (64), and water passing holes (66) formed in two adjacent inner partition plates (64) are distributed in a staggered mode;

An ultraviolet disinfection lamp (65) is arranged at the inner top of the disinfection box (17) and at the lower side of the inner partition plate (64);

The disinfection box (17) is also fixedly provided with a disinfectant branch pipe (15) with an inverted U shape, two side branches of the disinfectant branch pipe (15) are coaxially arranged with the water passing holes (66), and two side branches of the disinfectant branch pipe (15) are fixedly connected with the inner partition plate (64) and correspondingly extend to the lower side of the water passing hole (66) at the lowest position;

a disinfectant discharge hole (67) is formed in the disinfectant branch pipe (15) corresponding to the water hole (66);

a disinfectant tank (18) is fixed on the outer side of the disinfectant tank (17), and the disinfectant tank (18) is connected with the disinfectant branch pipe (15) through a disinfectant main pipe (16).

10. The module-assembled rural sewage treatment apparatus according to claim 9, wherein the water pipe comprises a water pipe five (29), a water pipe one (7), a water pipe two (9), a flexible pipe (10), a water pipe three (12) and a water pipe four (14);

One end of the water pipe five (29) is detachably connected with the pretreatment box (2), the water pipe five (29) corresponds to the lower part of the grid (41), and the other end of the water pipe five (29) is detachably connected with the upper part of the stirring box (28);

a water pump III (27) is arranged on the first water delivery pipe (7), one end of the first water delivery pipe (7) is detachably connected with the lower part of the stirring box (28), and the other end of the first water delivery pipe (7) extends into the biological treatment box (8) and is detachably connected with the water guide pipe (47);

a water pump II (24) is arranged on the water delivery pipe II (9), one end of the water delivery pipe II (9) is detachably connected with the biological treatment box (8), the water delivery pipe II (9) is communicated with the bottom of the space at the lower side of the net support plate I (59), the other end of the water delivery pipe II (9) is connected with a water delivery pipe III (12) through a flexible pipe (10), and one end of the water delivery pipe III (12) far away from the flexible pipe (10) is detachably arranged in the middle of the top sealing cover (35);

A water pump I (20) is arranged on the water delivery pipe IV (14), one end of the water delivery pipe IV (14) is detachably connected with the middle of the bottom sealing cover (23), the other end of the water delivery pipe IV (14) is detachably connected with the sterilizing box (17), and the water delivery pipe IV (14) is communicated with the upper side space of the uppermost inner partition plate (64);

the water inlet pipe (39) is connected with the upper part of the inner side of the pretreatment box (2), and the water inlet pipe (39) and the water delivery pipe (29) are respectively positioned at two ends of the pretreatment box (2);

the drain pipe (19) is communicated with the bottom of the lower space of the lowest inner partition plate (64), and the drain pipe (19) and the water delivery pipe (14) are respectively positioned at two sides of the sterilizing box (17).