CN106946354B - Septic tank sewage end treatment device - Google Patents
Septic tank sewage end treatment device Download PDFInfo
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- CN106946354B CN106946354B CN201710349401.1A CN201710349401A CN106946354B CN 106946354 B CN106946354 B CN 106946354B CN 201710349401 A CN201710349401 A CN 201710349401A CN 106946354 B CN106946354 B CN 106946354B
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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
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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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
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- 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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- 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
- Y02W10/20—Sludge processing
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- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The embodiment of the invention provides a septic tank sewage end treatment device, which comprises an outer frame body, a biochemical reaction mechanism, a multi-layer bioreactor and oxygen supply equipment, wherein a baffle plate is arranged in the middle of the outer frame body and divides the outer frame body into a first accommodating cavity and a second accommodating cavity, and the biochemical reaction mechanism comprises: the AO reaction tank is formed by a first accommodating cavity; the multi-layered bioreactor comprises: set up the inner frame body in the second holding cavity, first predetermined clearance has between its first lateral wall and the baffle, first predetermined clearance passes through the overflow mouth and the AO reaction tank intercommunication of second water separator, the second lateral wall of inner frame body and the laminating of the second lateral wall of outer frame body mutually, supreme aerobic reaction layer that is equipped with in proper order is down followed in the inner frame body, facultative reaction layer and vegetation layer, all be equipped with a plurality of aeration structures in the AO reaction tank with the second predetermined clearance, a plurality of aeration structures all communicate with the oxygen supply equipment, can be in the colourity of effectively removing the sewage, in the organic pollutant, strengthen nitrogen and phosphorus removal effect.
Description
Technical Field
The invention relates to the technical field of environmental protection equipment, in particular to a septic tank sewage tail end treatment device.
Background
With the development and popularization of the construction of new rural areas and beautiful villages, the comprehensive treatment of the rural environment in the whole county and whole district is very active. Wherein, the transformation of the rural septic tank is one of the key points. The process commonly adopted for reforming the rural septic tank at present is a scattered household four-grid septic tank, and the main principle of the four-grid septic tank is as follows: sewage is firstly discharged to a first grid from a water inlet, solids with larger specific gravity and parasitic ova and other matters are precipitated in the first grid, initial fermentation and decomposition are started, and the sewage treated by the first grid can be divided into three layers: the pasty dung skin, the relatively clear dung liquid and the solid dung residues flow into the second grid after the preliminary decomposition, and the dung skin floating on the dung skin and the dung residues deposited on the dung skin are left in the first grid for continuous fermentation; in the second grid, the liquid dung is continuously fermented and decomposed, worm eggs continuously sink, pathogens die gradually, the liquid dung is further harmless, the thickness of the generated excrement skin and the excrement slag is obviously reduced compared with that of the first grid, the liquid dung flowing into the third grid is generally decomposed, and germs and parasitic worm eggs are basically killed; the third function is mainly to temporarily store the basically harmless liquid dung; the fourth grid is generally an artificial wetland, the artificial wetland comprises a protective wall, a large rubble layer, a limestone layer, a small rubble layer, a planting soil layer and vegetation, and the vegetation is planted on the planting soil layer.
Compared with a three-grid septic tank, the four-grid septic tank has the advantages of more beautiful form and stronger ornamental function in actual operation, but the following problems still exist in actual use.
Firstly, the effluent of the third sewage of the septic tank is different from the conventional domestic sewage, and a plurality of rural septic tanks do not have daily domestic drainage, so that the effluent of the septic tank has higher pollutants, chemical oxygen demand (cod), biochemical oxygen demand (bod) and ammonia nitrogen average which can respectively reach 1000, 500 and 40; however, the conventional domestic sewage inlet standard is still adopted in many four-grid septic fourth-grid wetland treatments, and the actual treatment load of the wetland treatment is relatively low, so that the sense of the water body is relatively poor.
Secondly, because the concentration of the inlet water pollutants is high, and because no power is used for supplying oxygen, the fourth grid end wetland is basically in a facultative/anaerobic state, the sense of the water body is poor, the actual outlet water chromaticity is poor, the organic pollutants are high, the nitrogen and phosphorus removal effects are poor, and the comprehensive discharge secondary outlet water standard is difficult to achieve; therefore, the water body is easy to decay, and mosquitoes are easy to attract.
In conclusion, the sewage treated by the tail end of the sewage of the existing septic tank has poor chromaticity, high organic pollutants and poor denitrification and dephosphorization effects.
Disclosure of Invention
The invention aims to provide a septic tank sewage tail end treatment device which can effectively remove chromaticity and organic pollutants in sewage and simultaneously enhance the effects of nitrogen and phosphorus removal.
In order to achieve the above object, an embodiment of the present invention provides a septic tank sewage end treatment apparatus, including: outer frame body, biochemical reaction mechanism, multilayer bioreactor and oxygen supply equipment, wherein, the middle part of outer frame body is equipped with a baffle, and first holding cavity and second holding cavity are separated into with outer frame body to the baffle, and biochemical reaction mechanism includes: the AO reaction tank is composed of a first accommodating cavity; the central guide flow cylinder is arranged in the AO reaction tank and is connected with the bottom of the AO reaction tank; the first water outlet separator is arranged at the bottom of the central guide flow cylinder; the water inlet pipe penetrates through the first side wall of the outer frame body, one end of the water inlet pipe is exposed out of the first side wall of the outer frame body, and the other end of the water inlet pipe is communicated with the top of the central guide cylinder; the second effluent separator is arranged on the baffle plate, and the distance between the second effluent separator and the bottom of the AO reaction tank is greater than the distance between the first effluent separator and the bottom of the AO reaction tank; the multi-layered bioreactor comprises: the inner frame body is arranged in the second accommodating cavity, a first preset gap is formed between a first side wall of the inner frame body and the baffle, the first preset gap is communicated with the AO reaction tank through an overflow port of the second water outlet separator, the bottom of the inner frame body is detachably connected with an inner frame bottom, a second preset gap is formed between the bottom of the inner frame bottom and the bottom of the outer frame body, the second side wall of the inner frame body is attached to the second side wall of the outer frame body, an aerobic reaction layer, a facultative reaction layer and a plant growth layer are sequentially arranged in the inner frame body from bottom to top, the aerobic reaction layer is respectively communicated with the outer frame body and the facultative reaction layer, the plant growth layer is communicated with the facultative reaction layer, the first side wall of the outer frame body and the second side wall of the outer frame body are two opposite side walls of the outer frame body, the plane where the first side wall of the outer frame body and the plane where the second side wall of the outer frame body are both parallel to the plane where the baffle is located, and the first side wall of the inner frame body and the second side wall of the inner frame body are two opposite side walls of the inner frame body; a plurality of aeration structures are arranged in the AO reaction tank and the second preset gap and communicated with oxygen supply equipment; wherein, set up a plurality of aeration structures in AO reaction tank and all be located AO reaction tank bottom.
Optionally, the oxygen supply apparatus comprises: the device comprises a fixed support, a solar component, an oxygenation pump and an air pipe; wherein, the solar component is arranged on the fixed bracket, the oxygenation pump is electrically connected with the solar component, one end of the air pipe is communicated with the output end of the oxygenation pump, and the other end is communicated with the plurality of aeration structures in the AO reaction tank and the second preset gap.
Optionally, a plurality of first holes are formed in the inner frame bottom, and the aerobic reaction layer is communicated with the outer frame body through the plurality of first holes.
Optionally, an intermediate layer laminate, a first supporting leg and a second supporting leg are further arranged in the inner frame body, the intermediate layer laminate is located between the aerobic reaction layer and the facultative reaction layer, the first supporting leg and the second supporting leg are both located in the aerobic reaction layer, one end of the first supporting leg is connected with the intermediate layer laminate, the other end of the first supporting leg is connected with the first side wall of the inner frame body, one end of the second supporting leg is connected with the intermediate layer laminate, and the other end of the second supporting leg is connected with the second side wall of the inner frame body; wherein, the interlayer laminate is provided with a plurality of second holes, and the aerobic reaction layer is communicated with the facultative reaction layer through the second holes.
Optionally, a plant layer laminate, a third supporting leg and a fourth supporting leg are further arranged in the inner frame body, the plant layer laminate is located between the facultative reaction layer and the plant growth layer, the third supporting leg and the fourth supporting leg are located in the facultative reaction layer, one end of the third supporting leg is connected with the plant layer laminate, the other end of the third supporting leg is connected with the first side wall of the inner frame body, one end of the fourth supporting leg is connected with the plant layer laminate, and the other end of the fourth supporting leg is connected with the second side wall of the inner frame body; wherein, plant layer is equipped with a plurality of third holes on the board, and the facultative reaction layer is linked together through a plurality of third holes with the vegetation layer.
Optionally, a first middle bearing rod is further arranged in the inner frame, the top of the first middle bearing rod is abutted to the middle layer laminate, and the other end of the first middle bearing rod is abutted to the bottom of the inner frame.
Optionally, a second middle bearing rod is further arranged in the inner frame body, the top of the second middle bearing rod is abutted to the plant layer-by-layer plate, the other end of the second middle bearing rod is abutted to the middle layer-by-layer plate, and the axis of the second middle bearing rod is overlapped with the axis of the first middle bearing rod.
Optionally, a plurality of supporting bases are arranged in the second preset gap at intervals, one end of each supporting base is abutted to the bottom of the inner frame, and the other end of each supporting base is abutted to the bottom of the outer frame.
Optionally, spherical suspended fillers are arranged in the aerobic reaction layer and the facultative reaction layer, and the density of the spherical suspended fillers in the aerobic reaction layer is greater than that of the spherical suspended fillers in the facultative reaction layer.
Optionally, a pebble layer and a gravel layer are arranged in the plant growth layer, the pebble layer is located at the bottom of the plant growth layer, and the gravel layer covers the pebble layer.
The scheme of the invention has the following beneficial effects:
in the embodiment of the invention, the third grid sewage of the septic tank enters the central guide cylinder through the water inlet pipe, an anaerobic suspended sludge layer is formed in the central guide cylinder for anaerobic biological reaction, then the sewage sludge is subjected to anaerobic/aerobic separation through the first water outlet separator, the anaerobic sludge is left in the central guide cylinder, the sewage flows into an aerobic area on the outer ring of the AO reaction tank from a gap of the first water outlet separator, a mixed activated sludge tank is formed in the aerobic area through aeration stirring because a plurality of aeration structures are arranged in the aerobic area, aerobic microorganisms in the mixed activated sludge tank degrade, oxidize or adsorb organic pollutants in the sewage, after the aerobic reaction is carried out for a certain time, the sewage is subjected to gas-liquid separation through the second water outlet separator, so that oxygen in the sewage is left in the tank, meanwhile, the sludge in the sewage falls into the tank, supernatant enters the multilayer bioreactor through an overflow port of the second water outlet separator, the sewage sequentially flows through an aerobic reaction layer, an aerobic reaction layer and a plant growth layer of the multilayer bioreactor, dissolved oxygen content is controlled through the aeration structures, a biofilm type aerobic reaction reactor is formed, and the sewage is subjected to form a high-efficiency denitrification and denitrification effect in the multilayer bioreactor.
Drawings
FIG. 1 is a schematic structural diagram of an outer frame, a biochemical reaction mechanism and a multi-layer bioreactor according to an embodiment of the present invention;
FIG. 2 is a second schematic structural diagram of an outer frame, a biochemical reaction mechanism and a multi-layer bioreactor according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a fixing bracket and a solar module according to an embodiment of the invention;
FIG. 4 is a schematic structural view of an oxygenation pump and an air pipe in an embodiment of the invention;
FIG. 5 is a schematic structural diagram of an outer frame and a multi-layered bioreactor in an embodiment of the present invention.
Description of reference numerals:
1. an AO reaction cell; 2. a central draft tube; 3. a first effluent separator; 4. a water inlet pipe; 5. a second effluent separator; 6. an outer frame body; 7. a water inlet through hole; 8. an inner frame body; 9. an aerobic reaction layer; 10. a facultative reaction layer; 11. a plant growth layer; 12. fixing a bracket; 13. a solar module; 14. an oxygenation pump; 15. an air tube; 16. an aeration structure; 17. an intermediate layer laminate; 18. a plant layer laminate; 19. a first middle load bar; 20. a second middle load bar; 21. spherical suspension filler; 22. wetland plants; 23. a support base; 24. an inner frame bottom; 25. a first supporting leg; 26. a second support leg; 27. a third supporting leg; 28. a fourth supporting leg; 29. and a baffle plate.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1 to 5, an embodiment of the present invention provides a septic tank sewage end treatment apparatus, including: outer frame 6, biochemical reaction mechanism, multilayer bioreactor and oxygen supply equipment.
Wherein, the middle part of outer frame 6 is equipped with a baffle 29, and baffle 29 separates into first holding cavity and second holding cavity with outer frame 6, and biochemical reaction mechanism includes: an AO reaction tank 1 composed of a first accommodating cavity; the central guide cylinder 2 is arranged in the AO reaction tank 1 and is connected with the bottom of the AO reaction tank 1; the first water outlet separator 3 is arranged at the bottom of the central guide cylinder 2; the water inlet pipe 4 penetrates through the first side wall of the outer frame body 6, one end of the water inlet pipe 4 is exposed out of the first side wall of the outer frame body 6, and the other end of the water inlet pipe is communicated with the top of the central guide cylinder 2; and the second effluent separator 5 is arranged on the baffle plate 29, and the distance between the second effluent separator 5 and the bottom of the AO reaction tank 1 is larger than the distance between the first effluent separator 3 and the bottom of the AO reaction tank 1. As a preferred example, the first receiving cavity may be a closed cavity, and the second receiving cavity may be an open cavity.
Among others, in a specific embodiment of the present invention, a multi-layered bioreactor comprises: the inner frame body 8 is arranged in the second accommodating cavity, a first preset gap is formed between a first side wall of the inner frame body 8 and the baffle 29, the first preset gap is communicated with the AO reaction tank through an overflow port of the second water outlet separator 5, the bottom of the inner frame body 8 is detachably connected with an inner frame bottom 24, a second preset gap is formed between the bottom of the inner frame bottom 24 and the bottom of the outer frame body 6, a second side wall of the inner frame body 8 is attached to a second side wall of the outer frame body 6, an aerobic reaction layer 9, a facultative reaction layer 10 and a plant growth layer 11 are sequentially arranged in the inner frame body 8 from bottom to top, the aerobic reaction layer 9 is respectively communicated with the outer frame body 6 and the facultative reaction layer 10, the plant growth layer 11 is communicated with the facultative reaction layer 10, the first side wall of the outer frame body 6 and the second side wall of the outer frame body 6 are two opposite side walls of the outer frame body 6, the plane where the first side wall of the outer frame body 6 and the plane where the second side wall of the outer frame body 6 are both parallel to the plane where the baffle 29 is located, and the first side wall of the inner frame body 8 and the second side wall of the inner frame body 8 are parallel to the baffle. As a preferred example, the second effluent separator 5 may be an effluent three-phase separator, which facilitates gas-liquid-solid separation.
In the embodiment of the present invention, the first predetermined gap and the second predetermined gap are communicated with each other to form a water inlet gallery, so that the sewage entering the multi-layer bioreactor from the overflow port of the second effluent separator 5 can smoothly enter the aerobic reaction layer 9.
In the embodiment of the present invention, a plurality of aeration structures 16 are disposed in the AO reaction tank 1 and in the second predetermined gap, and the plurality of aeration structures 16 are communicated with the oxygen supply device; wherein, a plurality of aeration structures 16 arranged in the AO reaction tank 1 are all positioned at the bottom of the AO reaction tank 1. As a preferred example, the aeration structure 16 may be specifically a gas stone or a pipe, and it should be noted that if the aeration structure 16 is a pipe, it is required to provide a plurality of through holes on the pipe wall of the pipe to facilitate the output of oxygen into the AO reaction tank 1 or the multi-layer bioreactor.
In an embodiment of the present invention, one end of the water inlet pipe 4 is communicated with a water outlet of the third cell of the septic tank, and is configured to introduce the sewage in the third cell of the septic tank into the septic tank sewage end treatment device, so that the septic tank sewage end treatment device treats the end of the sewage in the septic tank, thereby removing chromaticity, organic pollutants and ammonia nitrogen in the sewage, and enhancing the effects of nitrogen and phosphorus removal. In the embodiment of the present invention, in order to facilitate the installation of the water inlet pipe 4, a water inlet through hole 7 may be formed on the first side wall of the outer frame 6, so that the water inlet pipe 4 is inserted into the water inlet through hole 7.
In an embodiment of the present invention, the oxygen supply apparatus is mainly used for supplying oxygen to the biochemical reaction mechanism and the multi-layer bioreactor. Specifically, in an embodiment of the present invention, the oxygen supply apparatus includes: a fixed bracket 12; a solar module 13; an oxygenation pump 14; and an air tube 15. Wherein, the solar component 13 is arranged on the fixed bracket 12, the oxygenation pump 14 is electrically connected with the solar component 13, one end of the air pipe 15 is communicated with the output end of the oxygenation pump 14, and the other end is communicated with a plurality of aeration structures 16 in the AO reaction tank 1 and the second preset gap. As an example, the solar module 13 may be a solar panel.
In an embodiment of the present invention, in order to intermittently supply oxygen to the plurality of aeration structures 16 in the AO reaction tank 1 and in the second predetermined gap, the aeration pump 14 may be an oil-free permanent magnetic direct current aeration pump, and the air pipe 15 may be a distributed air pipe. In the specific embodiment of the present invention, the solar module 13 is mainly used for providing direct current drive for the oxygenation pump 14, so that a power supply module is not required to be additionally provided for the oxygenation pump 14, post-maintenance is not required, and the operation cost is reduced. It should be noted that, in order to facilitate the normal operation of the solar module 13, the fixing bracket 12 should be fixed at a position of an unobstructed area, for example, a position of an unobstructed area of a farmer. It should be further noted that, in order to ensure that the multi-layer bioreactor can purify water well, the concentration of dissolved oxygen in the second predetermined gap is reduced to less than 0.5 mg/l after the small amount of dissolved oxygen supplied by the plurality of aeration structures 16 passes through the aerobic reaction layer 9.
Optionally, in an embodiment of the present invention, a plurality of first holes are formed on the inner frame bottom 24, the aerobic reaction layer 9 is communicated with the outer frame body 6 through the plurality of first holes, so that sewage entering the multi-layer bioreactor from the overflow port of the second water separator 5 can smoothly enter the aerobic reaction layer 9, and oxygen output from the aeration structure 16 in the second preset gap can enter the aerobic reaction layer 9, so that the aerobic reaction layer 9 can form an aerobic environment. And as an example, the diameter of the first hole may be 50 millimeters (mm), and the plurality of first holes may be uniformly arranged on the inner frame bottom 24, so as to uniformly distribute water.
Optionally, in an embodiment of the present invention, an intermediate layer plate 17, a first supporting leg 25 and a second supporting leg 26 are further disposed in the inner frame 8, the intermediate layer plate 17 is located between the aerobic reaction layer 9 and the facultative reaction layer 10, the first supporting leg 25 and the second supporting leg 26 are both located in the aerobic reaction layer 9, one end of the first supporting leg 25 is connected to the intermediate layer plate 17, the other end is connected to the first side wall of the inner frame 8, one end of the second supporting leg 26 is connected to the intermediate layer plate 17, and the other end is connected to the second side wall of the inner frame 8. Wherein, a plurality of second holes are arranged on the interlayer laminate 17, and the aerobic reaction layer 9 is communicated with the facultative reaction layer 10 through the second holes, thereby facilitating the water body of the aerobic reaction layer 9 to enter the facultative reaction layer 10. As a preferred example, the diameter of the second holes may be 50mm, and the second holes may be all arranged on the middle layer plate 17 to facilitate uniform water distribution. It should be noted that the first supporting leg 25 and the second supporting leg 26 are mainly used for supporting the interlayer plate 17, so as to facilitate the fixing of the interlayer plate 17.
Optionally, in a specific embodiment of the present invention, spherical suspended fillers 21 are disposed in both the aerobic reaction layer 9 and the facultative reaction layer 10, and the density of the spherical suspended fillers 21 in the aerobic reaction layer 9 is greater than the density of the spherical suspended fillers 21 in the facultative reaction layer 10. As a preferable example, the spherical suspended fillers 21 can be porous rotary spherical suspended fillers with a diameter of 80mm, the density of the spherical suspended fillers 21 in the aerobic reaction layer 9 is about 70 to 85 percent of the space of the layer, and the density of the spherical suspended fillers 21 in the facultative reaction layer 10 is about 40 to 60 percent of the space of the layer.
Specifically, in the embodiment of the present invention, the spherical suspension filler 21 can be formed by injection molding of polypropylene material, and is a double-layer sphere inside and outside, wherein the hollow fishnet-shaped sphere outside and the rotary sphere inside. The spherical suspended filler 21 mainly plays a role of a biomembrane carrier, has a function of carrying suspended matters, and has the characteristics of strong biological adhesive force, large surface area, high porosity, good chemical and biological qualitative performance, durability, no harmful substances dissolved out, no secondary pollution, ultraviolet resistance, ageing resistance, strong hydrophilic performance and the like, so that the aerobic reaction layer 9 can conveniently purify the sewage flowing through the aerobic reaction layer 9, and the facultative reaction layer 10 can conveniently purify the sewage flowing through the facultative reaction layer 10.
Optionally, in a specific embodiment of the present invention, a plant layer laminate 18, a third supporting leg 27 and a fourth supporting leg 28 are further disposed in the inner frame 8, the plant layer laminate 18 is located between the facultative reaction layer 10 and the plant growth layer 11, the third supporting leg 27 and the fourth supporting leg 28 are both located in the facultative reaction layer 10, one end of the third supporting leg 27 is connected to the plant layer laminate 18, the other end is connected to the first sidewall of the inner frame 8, one end of the fourth supporting leg 28 is connected to the plant layer laminate 18, and the other end is connected to the second sidewall of the inner frame 8; wherein, plant layer plywood 18 is equipped with a plurality of third holes, and facultative reaction layer 10 is linked together through a plurality of third holes with vegetation layer 11 to the water of facultative reaction layer 10 of being convenient for gets into vegetation layer 11, further purifies quality of water through vegetation layer 11. As a preferred example, the diameter of the third hole may be 20mm, and the third holes may be uniformly arranged on the plant layer plate 18 to facilitate uniform water distribution. It should be noted that the third supporting foot 27 and the fourth supporting foot 28 are mainly used for supporting the plant layer plate 18, so as to facilitate the fixation of the plant layer plate 18.
Optionally, in an embodiment of the present invention, a pebble layer and a crushed stone layer are disposed in the plant growth layer 11, the pebble layer is located at the bottom of the plant growth layer 11, and the crushed stone layer covers the pebble layer, so that the plant growth layer 11 performs a purification treatment on the sewage entering the plant growth layer 11. It should be noted that half of the height of the gravel layer is within the height of the liquid level of the water body (i.e., the treated sewage).
In addition, in the embodiment of the invention, in order to combine the underflow type wetland and purify water better, the wetland plants 22 can be planted in the plant growth layer 11, but the root systems of the planted wetland plants 22 are required to be within the liquid level height of the water body. It should be noted that, besides the pebble layer and the gravel layer, other wetland fillers may be provided in the plant growth layer 11.
As a preferable example, in the embodiment of the present invention, the thickness of the crushed stone layer may be 3 cm to 5 cm, and the thickness of the crushed stone layer may be 2 cm to 3 cm.
Optionally, in an embodiment of the present invention, when the water level in the plant growth layer 11 is too high, the water in the plant growth layer 11 needs to be discharged, so a water outlet may be provided on the second side wall of the inner frame 8 and the second side wall of the outer frame 6 corresponding to the plant growth layer 11, so as to discharge excess water.
Optionally, in an embodiment of the present invention, a first middle bearing bar 19 is further disposed in the inner frame 8, and a top of the first middle bearing bar 19 abuts against the middle layer plate 17, and the other end abuts against the inner frame bottom 24. In addition, a second middle bearing rod 20 is further disposed in the inner frame 8, the top of the second middle bearing rod 20 abuts against the plant layer laminate 18, the other end of the second middle bearing rod 20 abuts against the middle layer laminate 17, and the axis of the second middle bearing rod 20 coincides with the axis of the first middle bearing rod 19.
In the embodiment of the present invention, the first middle bearing bar 19 mainly serves to support the interlayer plate 17 and facilitate the fixing of the interlayer plate 17. Similarly, the second middle support bar 20 is mainly used to support the plant layer plate 18 and facilitate the fixation of the plant layer plate 18.
Optionally, in an embodiment of the present invention, a plurality of support bases 23 are arranged at intervals in the second preset gap, one end of each support base 23 abuts against the inner frame bottom 24, and the other end abuts against the bottom of the outer frame 6.
In the embodiment of the present invention, the supporting bases 23 are internal structural supporting members, and support all the structural weight of the internal structure (i.e. the inner frame 8). In the embodiment of the present invention, the inner frame 8 is an extractable multilayer structure, and is mainly made of a Polyvinyl chloride (PVC) welded structure or a glass fiber reinforced plastic anti-corrosion structure, and the whole inner frame 8 can be extracted from the outer frame 6, and the layered structure (i.e., the aerobic reaction layer 9, the facultative reaction layer 10, and the plant growth layer 11) can be processed step by step. As a preferable example, in order to facilitate the extraction of the inner frame body 8, a handle may be provided on the first side wall of the inner frame body 8.
It can be seen that, in the embodiment of the present invention, the sewage in the third grid of the septic tank enters the central draft tube 2 through the water inlet pipe 4, an anaerobic suspended sludge layer is formed in the central draft tube 2, anaerobic biological reaction is performed to degrade macromolecular substances and organic substances which are difficult to degrade in the sewage, then the sewage sludge is subjected to anaerobic/aerobic separation through the first effluent separator 3, the anaerobic sludge is retained in the central draft tube 2, the sewage flows into an aerobic zone on the outer ring of the AO reaction tank 1 from the gap of the first effluent separator 3 to form an anaerobic-Aerobic (AO) system, as the aeration structure 16 in the aerobic zone is aerated, a mixed activated sludge tank is formed in the aerobic zone through aeration stirring, and aerobic microorganisms in the mixed activated sludge tank degrade, oxidize or adsorb organic pollutants in the sewage, after the aerobic reaction is carried out for a certain time, the sewage is subjected to gas-liquid-solid separation through the second water outlet separator 5, so that oxygen in the sewage is left in the tank, meanwhile, sludge in the sewage is settled and falls into the tank, supernatant enters the multilayer bioreactor through an overflow port of the second water outlet separator 5, the sewage sequentially flows through an aerobic reaction layer 9, a facultative reaction layer 10 and a plant growth layer 11 of the multilayer bioreactor, and simultaneously, the dissolved oxygen content is controlled through an aeration structure 16 in a second preset gap, so that a Moving Bed Biofilm Reactor (MBBR) type aerobic-anaerobic (OA) bioreactor unit is formed, so that synchronous nitrification and denitrification are formed in the multilayer bioreactor, further, chromaticity, organic pollutants and ammonia nitrogen in the sewage are rapidly and efficiently removed, and the denitrification and dephosphorization effects are enhanced. Wherein the flow direction of the sewage is shown by the arrow in fig. 1.
It should be noted that, in order to ensure the normal operation of the septic tank sewage end treatment device, when the septic tank sewage end treatment device is used for treating sewage, the liquid level height in the central draft tube 2 is required to be about 10 cm to 15 cm higher than the liquid level height in the aerobic zone, and the liquid level height in the multi-layer bioreactor is required to be about 10 cm to 20 cm lower than the liquid level height in the aerobic zone.
In addition, it is worth mentioning that, after septic tank sewage end treatment device handled the sewage of a period, there will be certain silt to pile up in the multilayer bioreactor, and because interior framework 8 is extractable formula multilayer structure, like this, after mentioning interior framework 8, do not have other constitutional unit in the outer frame 6, silt can directly be clear away, and the interior framework 8 that proposes can the layering be dismantled to can wash, effectively avoid taking place to block up the inconvenient problem of clearance in the outer frame 6.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a septic tank sewage end treatment device which characterized in that includes: outer frame body, biochemical reaction mechanism, multilayer bioreactor and oxygen supply equipment, wherein, the middle part of outer frame body is equipped with a baffle, the baffle will first holding cavity and second holding cavity are separated into to the outer frame body, biochemical reaction mechanism includes: the AO reaction tank is composed of the first accommodating cavity; the central guide cylinder is arranged in the AO reaction tank and is connected with the bottom of the AO reaction tank; the first water outlet separator is arranged at the bottom of the central guide cylinder; the water inlet pipe penetrates through the first side wall of the outer frame body, one end of the water inlet pipe is exposed out of the first side wall of the outer frame body, and the other end of the water inlet pipe is communicated with the top of the central guide cylinder; a second effluent separator disposed on the baffle, a distance between the second effluent separator and the bottom of the AO reaction tank being greater than a distance between the first effluent separator and the bottom of the AO reaction tank,
the multi-layered bioreactor comprises: an inner frame body arranged in the second accommodating cavity, wherein a first preset gap is arranged between a first side wall of the inner frame body and the baffle, the first preset gap is communicated with the AO reaction tank through an overflow port of the second water outlet separator, the bottom of the inner frame body is detachably connected with an inner frame bottom, a second preset gap is arranged between the bottom of the inner frame bottom and the bottom of the outer frame body, a second side wall of the inner frame body is attached to a second side wall of the outer frame body, an aerobic reaction layer, a facultative reaction layer and a plant growth layer are sequentially arranged in the inner frame body from bottom to top, the aerobic reaction layer is respectively communicated with the outer frame body and the facultative reaction layer, the plant growth layer is communicated with the facultative reaction layer, the first side wall of the outer frame body and the second side wall of the outer frame body are two opposite side walls of the outer frame body, a plane where the first side wall of the outer frame body and a plane where the second side wall of the outer frame body are both parallel to a plane where the baffle is located, and the first side wall of the inner frame body and the second side wall of the inner frame body are parallel to a plane where the baffle is located,
a plurality of aeration structures are arranged in the AO reaction tank and the second preset gap, and are communicated with the oxygen supply equipment; wherein the plurality of aeration structures arranged in the AO reaction tank are all positioned at the bottom of the AO reaction tank,
the inner frame body is of an extractable multilayer structure.
2. The septic tank sewage termination apparatus of claim 1, wherein the oxygen supply device comprises: fixing a bracket; a solar module; an oxygenation pump; and a gas pipe, wherein the gas pipe is arranged in the gas pipe,
the solar assembly is arranged on the fixed support, the oxygenation pump is electrically connected with the solar assembly, one end of the air pipe is communicated with the output end of the oxygenation pump, and the other end of the air pipe is communicated with the multiple aeration structures in the AO reaction tank and the second preset gap.
3. The septic tank sewage end treatment device of claim 1, wherein the inner frame bottom is provided with a plurality of first holes, and the aerobic reaction layer is communicated with the outer frame body through the plurality of first holes.
4. The septic tank sewage end treatment device according to claim 1, wherein an intermediate layer plate, a first supporting leg and a second supporting leg are further provided in the inner frame body, the intermediate layer plate is located between the aerobic reaction layer and the facultative reaction layer, the first supporting leg and the second supporting leg are both located in the aerobic reaction layer, one end of the first supporting leg is connected with the intermediate layer plate, the other end of the first supporting leg is connected with the first side wall of the inner frame body, one end of the second supporting leg is connected with the intermediate layer plate, and the other end of the second supporting leg is connected with the second side wall of the inner frame body,
the interlayer laminate is provided with a plurality of second holes, and the aerobic reaction layer is communicated with the facultative reaction layer through the second holes.
5. The septic tank sewage end treatment device according to claim 4, wherein a plant layer laminate, a third supporting leg and a fourth supporting leg are further arranged in the inner frame body, the plant layer laminate is positioned between the facultative reaction layer and the plant growth layer, the third supporting leg and the fourth supporting leg are both positioned in the facultative reaction layer, one end of the third supporting leg is connected with the plant layer laminate, the other end of the third supporting leg is connected with the first side wall of the inner frame body, one end of the fourth supporting leg is connected with the plant layer laminate, and the other end of the fourth supporting leg is connected with the second side wall of the inner frame body,
wherein, be equipped with a plurality of third holes on the plant layer plywood, the facultative reaction layer with plant growth layer passes through a plurality of third holes are linked together.
6. The septic tank sewage end treatment device according to claim 5, wherein a first middle bearing bar is further arranged in the inner frame, the top of the first middle bearing bar abuts against the middle layer plate, and the other end of the first middle bearing bar abuts against the bottom of the inner frame.
7. The septic tank sewage end treatment device of claim 6, wherein a second middle bearing rod is further arranged in the inner frame, the top of the second middle bearing rod abuts against the plant layer laminated plate, the other end of the second middle bearing rod abuts against the middle layer laminated plate, and the axis of the second middle bearing rod coincides with the axis of the first middle bearing rod.
8. The septic tank sewage end treatment device of claim 1, wherein a plurality of support bases are arranged at intervals in the second predetermined gap, one end of each support base abuts against the bottom of the inner frame, and the other end of each support base abuts against the bottom of the outer frame.
9. The septic tank sewage end treatment device of claim 1, wherein spherical suspended fillers are arranged in both the aerobic reaction layer and the facultative reaction layer, and the density of the spherical suspended fillers in the aerobic reaction layer is greater than that of the spherical suspended fillers in the facultative reaction layer.
10. The septic tank sewage end treatment device of claim 1, wherein a pebble layer and a gravel layer are arranged in the plant growth layer, the pebble layer is positioned at the bottom of the plant growth layer, and the gravel layer covers the pebble layer.
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