CN116040839A - Sewage treatment tank capable of rapidly removing nitrogen and phosphorus - Google Patents
Sewage treatment tank capable of rapidly removing nitrogen and phosphorus Download PDFInfo
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- CN116040839A CN116040839A CN202211570022.2A CN202211570022A CN116040839A CN 116040839 A CN116040839 A CN 116040839A CN 202211570022 A CN202211570022 A CN 202211570022A CN 116040839 A CN116040839 A CN 116040839A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
- C02F2101/105—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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- 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
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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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- 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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Abstract
The utility model discloses a sewage treatment tank capable of rapidly removing nitrogen and phosphorus, which comprises a coupling tank, a chemical phosphorus removal tank, a biological treatment tank and a clean water tank. According to the utility model, the mesh isolation assembly for blocking sludge is arranged in the coupling tank, so that a device for settling sludge and sucking out the sludge in a backflow way is not required to be arranged, only the sludge in the coupling tank is required to be cleaned regularly, the process steps are reduced, and the sewage treatment efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment tank capable of rapidly removing nitrogen and phosphorus.
Background
The aeration biological filter is a novel biological membrane method sewage treatment process developed in recent years, and the current aeration biological filter has some common defects: in the traditional aeration biological filter process, the phosphorus removal effect is generally poor, a prepositive or postpositive chemical phosphorus removal measure is needed to be matched, in the prepositive biological phosphorus removal project, a large amount of phosphorus removal agents are consumed by orthophosphate, and meanwhile, a large amount of phosphorus removal agents are consumed by the existence of a large amount of fine particles, colloid or organic matters and the like, so that the operation cost is definitely increased, a large amount of organic matters (the general COD removal rate is 40% -70%) are removed in the pretreatment process, the phenomena of insufficient carbon sources and reduced denitrification capacity are caused in the aeration biological filter process, and the very adverse effect is caused for the aeration biological filter process for controlling the total nitrogen of effluent to reach the latest national emission standard.
In this regard, the chinese patent of the issued publication No. CN205710299U discloses a mobile membrane sludge coupling pool type denitrification and dephosphorization wastewater treatment device, which is composed of a mobile membrane sludge coupling pool, a sedimentation pool, an aerobic nitrifying biological filter and a chemical dephosphorization pool which are sequentially connected in series, wherein a sludge reflux device is arranged between the sedimentation pool and the mobile membrane sludge coupling pool, and a nitrifying liquid reflux device is arranged between the aerobic nitrifying biological filter and the mobile membrane sludge coupling pool.
The wastewater treatment device can effectively solve the problems of insufficient utilization of raw water carbon sources, complex pretreatment of a conventional biological aerated filter, frequent back flushing and the like, but suspended sludge in a flowing type membrane sludge coupling tank needs to be produced by back flowing in a sedimentation tank, so that the process is complicated, the sedimentation tank and a sludge pumping device are required to be arranged, the cost is increased, the efficiency is influenced, meanwhile, nitrifying liquid of sewage and back flowing directly enters the flowing type membrane sludge coupling tank, the nitrifying liquid and the sewage need to be mixed for a long time, and only better mixing effect can fully utilize organic matters in the sewage as carbon sources to denitrify the nitrifying liquid, so that the reaction time in the flowing type membrane sludge coupling tank is increased, and the efficiency is reduced.
Therefore, we propose a sewage treatment tank capable of rapidly removing nitrogen and phosphorus to solve the problems.
Disclosure of Invention
The utility model aims to provide a sewage treatment tank capable of rapidly removing nitrogen and phosphorus so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the sewage treatment tank comprises a coupling tank, a chemical dephosphorization tank, a biological treatment tank and a clean water tank, wherein a mixing pipe assembly is arranged below the coupling tank, the mixing pipe assembly is communicated with the clean water tank and the coupling tank, a water supply pipe assembly is arranged above the coupling tank, the water supply pipe assembly is communicated with one end of a first connecting pipe, the other end of the first connecting pipe is communicated with the chemical dephosphorization tank, a second connecting pipe is communicated between the chemical dephosphorization tank and the biological treatment tank, and a third connecting pipe is communicated between the biological treatment tank and the clean water tank;
the coupling tank is filled with a plurality of biomembrane carriers, a first stirring assembly and a mesh isolation assembly are arranged in the coupling tank, a second stirring assembly is arranged in the chemical dephosphorization tank, one side of the chemical dephosphorization tank is vertically fixedly connected with a side frame, the side wall of the top of the side frame is fixedly connected with a dephosphorization agent spraying machine, and a filler assembly and an aeration assembly are arranged in the biological treatment tank;
the mesh isolation assembly comprises an outer ring body and an inner ring body positioned in the center of the outer ring body, a mesh isolation annular plate is horizontally fixedly connected between the inner ring body and the outer ring body, and a plurality of biological film carriers are positioned below the mesh isolation assembly;
the mixing tube assembly comprises a spiral mixing tube positioned at the outer side of the coupling Chi Demian and a water inlet tank positioned at the outer side of the coupling pool, wherein the top surface of the spiral mixing tube is vertically communicated with a plurality of water inlet sub-tubes, the water inlet sub-tubes penetrate through the bottom surface of the coupling pool and are communicated with the inside of the coupling pool, the bottom surface of the spiral mixing tube is communicated with one end of a plurality of water inlet tubes, the other ends of the water inlet tubes are communicated with the water inlet tank, the water inlet tank is communicated with a sewage inlet, the bottom surface of the end part of the spiral mixing tube is communicated with one end of a return tube, the other end of the return tube is communicated with the chemical dephosphorization pool, and a fourth water suction pump is fixedly connected on the return tube.
Preferably, the packing assembly comprises a frame, the frame is inserted in the biological treatment tank, a plurality of L-shaped clamping plates are fixedly connected to the top surfaces of two sides of the frame respectively, the L-shaped clamping plates are in contact with the top surface of the biological treatment tank, lifting rings are fixedly connected to the top surfaces of the end parts of the L-shaped clamping plates, a plurality of cross bars are horizontally fixedly connected in the frame, a plurality of vertical rods are vertically fixedly connected to the bottom surfaces of the cross bars, and a plurality of packing parts are fixedly connected to two sides of the vertical rods respectively.
Preferably, the packing part comprises a net cover and a box body horizontally fixedly connected to the side wall of the vertical rod, biological packing is filled in the box body, two side plates are fixedly connected to the top surfaces of two sides of the box body respectively, two mounting grooves are respectively and horizontally formed in one side, close to each other, of the side plates, two sliding strips are respectively and fixedly connected to two sides of the bottom surface of the net cover, the sliding strips are slidably inserted in the mounting grooves, and a plurality of strip-shaped openings are respectively and horizontally formed in two sides of the box body.
Preferably, the water supply pipe assembly comprises two supports and a water absorption thin pipe, wherein the two supports are vertically and fixedly connected to the top surface of the coupling pool, the water absorption thin pipe is positioned between the two supports, the top end of the water absorption thin pipe is communicated with a first connecting pipe, the outer side of the lower part of the water absorption thin pipe is slidably sleeved with a water absorption thick pipe, two supports are respectively vertically provided with two main through grooves, two main through grooves are respectively vertically and slidably connected with two sliding blocks, and a connecting inclined rod is fixedly connected between each sliding block and the water absorption thick pipe.
Preferably, the side through groove is vertically formed in the outer side of the support, the side through groove is communicated with the main through groove, a threaded hole is horizontally formed in the position, close to the side through groove, of the sliding block, the threaded hole is in threaded connection with the screw rod, the end part of the screw rod penetrates through the side through groove and is fixedly connected with the locking pressing plate, the locking pressing plate is far away from the hand wheel which is fixedly connected with one side of the screw rod, the locking pressing plate is in contact with the side wall of the support, the outer side of the bottom end of the water absorption thin pipe is fixedly connected with the lower limiting ring, and the outer side of the lower limiting ring is fixedly connected with the lower sealing ring. The lower sealing ring is in interference fit with the inner side of the water absorption thick pipe, the inner side of the top surface of the water absorption thick pipe is fixedly connected with an upper limiting ring, the inner side of the upper limiting ring is fixedly connected with an upper sealing ring, and the upper sealing ring is in interference fit with the outer side of the water absorption thin pipe.
Preferably, the first stirring assembly comprises a horizontal frame fixedly connected to the top surface of the coupling tank, the free end of the horizontal frame is located at the center of the coupling tank and is fixedly connected with a sleeve on the bottom surface, the sleeve penetrates through the inner ring body, the stirring shaft is vertically and rotatably connected in the sleeve, the outer side of the lower part of the stirring shaft is located below the sleeve and is horizontally fixedly connected with a plurality of stirring rods, the top surface of the free end of the horizontal frame is fixedly connected with a first gear motor, and the rotating shaft end of the first gear motor is fixedly connected with the top end of the stirring shaft.
Preferably, the second stirring assembly comprises a plurality of stirring shaft rods horizontally and rotationally connected to the lower part of the chemical phosphorus removal tank and a transmission chamber fixedly connected to the side wall of the chemical phosphorus removal tank, a plurality of stirring blades are evenly and fixedly connected to the outer side of the stirring shaft rods, a second gear motor is fixedly connected to one end of the transmission chamber, a worm is fixedly connected to the rotating shaft end of the second gear motor, a plurality of rotating rods are fixedly connected to one end, close to the transmission chamber, of the stirring shaft rods respectively, the rotating rods penetrate through the side wall of the chemical phosphorus removal tank and are located in the transmission chamber and fixedly connected with a worm wheel, the worm is meshed with the worm wheel, and the rotating rods are rotationally connected with the side wall of the chemical phosphorus removal tank.
Preferably, the aeration assembly comprises an aeration fan and an aeration plate fixedly connected to the bottom surface of the biological treatment tank, the top surface of the aeration plate is provided with a plurality of plate-type aeration pipes, the top surface of the plate-type aeration pipes is communicated with a plurality of aeration ports, the aeration fan is communicated with one end of a plurality of air inlet pipes, and the other ends of the air inlet pipes penetrate through the side wall of the biological treatment tank and are communicated with the aeration plate.
Preferably, the first connecting pipe is fixedly connected with a first water suction pump, the second connecting pipe is fixedly connected with a second water suction pump, the third connecting pipe is fixedly connected with a third water suction pump, and the outer side of the clean water tank is communicated with a drain pipe.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the mesh isolation assembly for blocking sludge is arranged in the coupling tank, so that the sludge forms suspended sludge under the action of the first stirring assembly, bacterial species are convenient to cultivate and treat, thus a sedimentation tank is not required to be arranged for carrying out sludge sedimentation and a device for sucking out sludge backflow is not required, only the sludge in the coupling tank is required to be cleaned regularly, the process steps are reduced, and the sewage treatment efficiency is improved.
Drawings
FIG. 1 is a schematic view of the main structure of the first and third embodiments of the present utility model;
FIG. 2 is a schematic view showing a cross-sectional structure of a coupling tank according to a first embodiment of the present utility model;
FIG. 3 is a schematic view showing the structure of a packing assembly according to a second embodiment of the present utility model;
FIG. 4 is a schematic view showing a structure of a packing portion in a second embodiment of the present utility model;
FIG. 5 is a schematic view of a portion of a mixing tube assembly in a second embodiment of the utility model;
FIG. 6 is a schematic view showing the construction of an aeration assembly according to a third embodiment of the present utility model;
FIG. 7 is a schematic view showing the structure of a second stirring assembly according to a third embodiment of the present utility model;
fig. 8 is a schematic view showing a structure of a first stirring assembly according to a third embodiment of the present utility model.
In the figure: 1. a coupling pool; 2. a chemical dephosphorization pool; 3. a biological treatment tank; 4. a clean water tank; 5. a mixing tube assembly; 6. a water supply pipe assembly; 7. a mesh isolation assembly; 8. a first stirring assembly; 9. a filler assembly; 10. an aeration assembly; 11. a second stirring assembly; 101. a biofilm carrier; 21. a first connection pipe; 22. a first water pump; 23. a side frame; 24. a dephosphorization agent spraying machine; 31. a second connection pipe; 32. a second water pump; 41. a third connection pipe; 42. a third water pump; 43. a drain pipe; 51. a spiral mixing tube; 52. a water inlet sub-pipe; 53. a water inlet pipe; 54. a water inlet tank; 55. a sewage inlet; 56. a return pipe; 57. a fourth water pump; 61. a water absorption tubule; 62. a water absorption thick pipe; 63. a bracket; 64. a main through groove; 65. a slide block; 66. connecting the inclined rod; 67. a side through groove; 68. a threaded hole; 69. a screw; 610. locking the pressing plate; 611. a hand wheel; 612. a lower limit ring; 613. a lower seal ring; 614. an upper limit ring; 615. an upper seal ring; 71. an inner ring body; 72. an outer ring body; 73. a mesh isolation ring plate; 81. a cross frame; 82. a sleeve; 83. a first gear motor; 84. a stirring shaft; 85. a stirring rod; 91. a frame; 92. a cross bar; 93. an L-shaped clamping plate; 94. a hanging ring; 95. a vertical rod; 96. a filler part; 961. a case body; 962. a mesh cover; 963. a biological filler; 964. a side plate; 965. a mounting groove; 966. a slide bar; 967. a strip-shaped opening; 102. an aeration plate; 103. plate type aeration pipe; 104. an aeration port; 105. an air inlet pipe; 106. an aeration fan; 111. a transmission chamber; 112. a stirring shaft lever; 113. stirring the leaves; 114. a rotating rod; 115. a worm wheel; 116. a second gear motor; 117. a worm.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1-3, for a first embodiment of the present utility model, the present utility model provides a technical solution: the sewage treatment tank capable of rapidly removing nitrogen and phosphorus comprises a coupling tank 1, a chemical phosphorus removal tank 2, a biological treatment tank 3 and a clean water tank 4, wherein a mixing pipe assembly 5 is arranged below the coupling tank 1, the mixing pipe assembly 5 is communicated with the clean water tank 4 and the coupling tank 1, a water supply pipe assembly 6 is arranged above the coupling tank 1, the water supply pipe assembly 6 is communicated with one end of a first connecting pipe 21, the other end of the first connecting pipe 21 is communicated with the chemical phosphorus removal tank 2, a second connecting pipe 31 is communicated between the chemical phosphorus removal tank 2 and the biological treatment tank 3, and a third connecting pipe 41 is communicated between the biological treatment tank 3 and the clean water tank 4;
the coupling tank 1 is internally filled with a plurality of biological film carriers 101, a first stirring component 8 and a mesh isolation component 7 are arranged in the coupling tank 1, a second stirring component 11 is used for generating suspended sludge in the coupling tank 1 through stirring, the suspended sludge and the biological film carriers 101 are used for growing hydrolytic acidification microorganisms and special denitrification microorganisms, on the other hand, nitrifying liquid flowing back from the sewage and the clean water tank 4 uniformly contacts with the microorganisms, extracellular polymers of the hydrolytic acidification microorganisms can absorb organic matters and suspended particles carried by raw water and are used for removing the organic matters and the suspended particles, the special denitrification microorganisms convert nitrate nitrogen in the nitrifying liquid into nitrogen by taking the organic matters in the raw sewage as a carbon source, the purposes of denitrification and removal of the organic matters and the suspended particles are achieved, a second stirring component 11 is arranged in the chemical dephosphorization tank 2, one side of the chemical dephosphorization tank 2 is vertically fixedly connected with a side frame 23, the side wall of the top of the side frame 23 is fixedly connected with a dephosphorization agent spraying machine 24, and a filler component 9 and an aeration component 10 are arranged in the biological treatment tank 3;
the mesh isolation assembly 7 comprises an outer ring body 72 and an inner ring body 71 positioned at the center of the outer ring body 72, a mesh isolation ring plate 73 is horizontally fixedly connected between the inner ring body 71 and the outer ring body 72, a plurality of biological film carriers 101 are positioned below the mesh isolation assembly 7, the mesh isolation assembly 7 can isolate sludge and prevent the sludge from entering the chemical dephosphorization tank 2, so that a sedimentation tank and a sludge suction device are not required to be arranged, the process steps are reduced, the efficiency is improved, and only the sludge in the coupling tank 1 is required to be cleaned regularly;
the mixing tube assembly 5 comprises a spiral mixing tube 51 positioned at the bottom surface of the coupling tank 1 and a water inlet tank 54 positioned at the outer side of the coupling tank 1, the top surface of the spiral mixing tube 51 is vertically communicated with a plurality of water inlet sub-tubes 52, the water inlet sub-tubes 52 penetrate through the bottom surface of the coupling tank 1 and are communicated with the inside of the coupling tank 1, the bottom surface of the spiral mixing tube 51 is communicated with one end of a plurality of water inlet tubes 53, the other end of the water inlet tubes 53 is communicated with the water inlet tank 54, the water inlet tank 54 is communicated with a sewage inlet 55, the bottom surface of the end of the spiral mixing tube 51 is communicated with one end of a return tube 56, the other end of the return tube 56 is communicated with the chemical dephosphorization tank 2, a fourth water suction pump 57 is fixedly connected on the return tube 56, the mixing tube assembly 5 can mix sewage and returned nitrifying liquid in the spiral mixing tube 51, so that the sewage entering the coupling tank 1 is mixed with nitrifying liquid more completely, and thus the specific denitrifying microorganisms can better utilize organic matters in the sewage as carbon sources to denitrifying liquid, the reaction time in the coupling tank 1 is reduced, and the efficiency is improved.
Example 2:
referring to fig. 3-5, in a second embodiment of the present utility model, based on the previous embodiment, the packing assembly 9 includes a frame 91, the frame 91 is inserted into the biological treatment tank 3, two sides of the frame 91 are respectively and fixedly connected with a plurality of L-shaped clamping plates 93, the L-shaped clamping plates 93 contact the top surface of the biological treatment tank 3, the top surfaces of the ends of the L-shaped clamping plates 93 are fixedly connected with a hanging ring 94, a plurality of cross bars 92 are horizontally and fixedly connected in the frame 91, a plurality of vertical rods 95 are vertically and fixedly connected to the bottom surfaces of the cross bars 92, and two sides of the vertical rods 95 are respectively and fixedly connected with a plurality of packing parts 96.
The packing portion 96 comprises a net cover 962 and a box body 961 horizontally fixedly connected to the side wall of the vertical rod 95, biological packing 963 is filled in the box body 961, two side plates 964 are fixedly connected to the top surfaces of two sides of the box body 961 respectively, two mounting grooves 965 are respectively and horizontally formed in one side, close to each other, of the two side plates 964, two slide bars 966 are respectively and fixedly connected to the two sides of the bottom surface of the net cover 962, the slide bars 966 are slidably inserted into the mounting grooves 965, a plurality of strip-shaped openings 967 are respectively and horizontally formed in two sides of the box body 961, the biological packing 963 is used for growing special aerobic nitrifying bacteria and aerobic heterotrophic bacteria, the special aerobic nitrifying bacteria are used for oxidizing ammonia nitrogen into nitrate nitrogen, nitrifying liquid is convenient to flow back and denitrify, the aerobic heterotrophic bacteria are used for treating a small amount of residual organic matters, the packing component 9 can be directly taken out through the lifting rings 94, and the net cover 962 can conveniently add the biological packing 963 or replace the biological packing 963.
The water supply pipe assembly 6 comprises two brackets 63 and a water absorption thin pipe 61 which are vertically and fixedly connected to the top surface of the coupling pool 1, the water absorption thin pipe 61 is positioned between the two brackets 63, the top end of the water absorption thin pipe 61 is communicated with the first connecting pipe 21, the outer side of the lower part of the water absorption thin pipe 61 is in sliding sleeve joint with the water absorption thick pipe 62, two main through grooves 64 are respectively and vertically formed in the two brackets 63, two sliding blocks 65 are respectively and vertically and slidingly connected in the two main through grooves 64, and a connecting inclined rod 66 is fixedly connected between the sliding blocks 65 and the water absorption thick pipe 62.
The side through groove 67 is vertically formed in the outer side of the support 63, the side through groove 67 is communicated with the main through groove 64, a threaded hole 68 is horizontally formed in the position, close to the side through groove 67, of the sliding block 65, the threaded hole 68 is in threaded connection with the screw 69, the end portion of the screw 69 penetrates through the side through groove 67 and is fixedly connected with the locking pressing plate 610, one side, away from the screw 69, of the locking pressing plate 610 is fixedly connected with the hand wheel 611, the locking pressing plate 610 is in contact with the side wall of the support 63, the outer side of the bottom end of the water absorption tubule 61 is fixedly connected with the lower limiting ring 612, and the outer side of the lower limiting ring 612 is fixedly connected with the lower sealing ring 613. The lower sealing ring 613 is in interference fit with the inner side of the thick water absorption pipe 62, the inner side of the top surface of the thick water absorption pipe 62 is fixedly connected with the upper limiting ring 614, the inner side of the upper limiting ring 614 is fixedly connected with the upper sealing ring 615, the upper sealing ring 615 is in interference fit with the outer side of the thin water absorption pipe 61, the water supply pipe assembly 6 absorbs water through the thick water absorption pipe 62, the bottom end height of the thick water absorption pipe 62 is adjustable, the sewage treatment with different water amounts is suitable, and the situation that excessive silt is easily sucked out due to the fact that the thick water absorption pipe 62 is inserted too deeply is avoided.
Example 3:
referring to fig. 1 and fig. 6-8, in a third embodiment of the present utility model, the first stirring assembly 8 includes a horizontal frame 81 horizontally fixedly connected to the top surface of the coupling tank 1, the free end of the horizontal frame 81 is located at the center of the coupling tank 1 and the bottom surface of the horizontal frame is fixedly connected with a sleeve 82, the sleeve 82 passes through the inner ring 71, the sleeve 82 is vertically rotatably connected with a stirring shaft 84, the outer side of the lower portion of the stirring shaft 84 is located below the sleeve 82 and horizontally fixedly connected with a plurality of stirring rods 85, the top surface of the free end of the horizontal frame 81 is fixedly connected with a first gear motor 83, and the rotating shaft end of the first gear motor 83 is fixedly connected with the top end of the stirring shaft 84.
The second stirring assembly 11 comprises a plurality of stirring shaft rods 112 which are horizontally and rotatably connected to the lower part of the chemical phosphorus removal tank 2 and a transmission chamber 111 which is fixedly connected to the side wall of the chemical phosphorus removal tank 2, wherein a plurality of stirring blades 113 are uniformly and fixedly connected to the outer side of the stirring shaft rods 112, one end in the transmission chamber 111 is fixedly connected with a second gear motor 116, the rotating shaft ends of the second gear motor 116 are fixedly connected with a worm 117, one ends, close to the transmission chamber 111, of the stirring shaft rods 112 are respectively fixedly connected with a plurality of rotating rods 114, the rotating rods 114 penetrate through the side wall of the chemical phosphorus removal tank 2 and are positioned in the transmission chamber 111 and fixedly connected with a worm wheel 115, the worm 117 is meshed with the worm wheel 115, and the rotating rods 114 are rotatably connected with the side wall of the chemical phosphorus removal tank 2.
The aeration assembly 10 comprises an aeration fan 106 and an aeration plate 102 fixedly connected to the bottom surface of the biological treatment tank 3, a plurality of plate-type aeration pipes 103 are arranged on the top surface of the aeration plate 102, the top surfaces of the plate-type aeration pipes 103 are communicated with a plurality of aeration ports 104, the aeration fan 106 is communicated with one ends of a plurality of air inlet pipes 105, the other ends of the plurality of air inlet pipes 105 penetrate through the side wall of the biological treatment tank 3 and are communicated with the aeration plate 102, and dissolved oxygen in the biological treatment tank 3 is kept at 5.0-6.0 mg/L through the aeration assembly 10.
The first connecting pipe 21 is fixedly connected with a first water suction pump 22, the second connecting pipe 31 is fixedly connected with a second water suction pump 32, the third connecting pipe 41 is fixedly connected with a third water suction pump 42, and the outer side of the clean water tank 4 is communicated with a drain pipe 43.
Example 4:
referring to fig. 1 to 8, in a fourth embodiment of the present utility model, based on the above three embodiments, when the present utility model is used, sewage is introduced into the spiral mixing pipe 51 through the sewage inlet 55 in the mixing pipe assembly 5, and the nitrified liquid flowing back from the clean water tank 4 also flows into the spiral pipe 51 to be mixed and then is output into the coupling tank 1, and the suspended sludge in the coupling tank 1 and the hydrolytic acidification microorganisms and the special denitrification microorganisms growing on the biofilm carrier 101 are treated, the extracellular polymers of the hydrolytic acidification microorganisms can adsorb organic matters and suspended particles carried by the raw water, so as to remove the organic matters and the suspended particles, the special denitrification microorganisms convert nitrate nitrogen in the nitrified liquid into nitrogen by using the organic matters in the raw sewage as a carbon source, so as to achieve the purposes of denitrification and removal of the organic matters and the suspended particles, the sewage from which organic matters and suspended particles are removed enters a chemical treatment tank 2 through a water supply pipe assembly 6 and a first connecting pipe 21, is dephosphorized by a dephosphorizing agent and then enters a biological treatment tank 3 for treatment, the biological treatment tank 3 is internally treated by a biological filler 963 for growing special aerobic nitrifying bacteria and aerobic heterotrophic bacteria, the special aerobic nitrifying bacteria are used for oxidizing ammonia nitrogen into nitrate nitrogen, so that nitrifying liquid is convenient for reflux denitrification, the aerobic heterotrophic bacteria are used for treating a small amount of residual organic matters, then the treated water enters a clean water tank, part of water is discharged from a water discharge pipe 43, and part of water is used as nitrifying liquid to flow back into a coupling tank 1 for denitrification, a mesh isolation assembly 7 for blocking sludge is arranged in the coupling tank 1, so that the sludge forms suspended sludge under the action of a first stirring assembly 8, the treated bacterial is convenient for culturing, thus the sedimentation tank is not required to be arranged for sludge sedimentation, and the device for sucking out the sludge in the coupling tank 1 by refluxing only needs to remove the sludge in the coupling tank 1 regularly, so that the process steps are reduced, and the sewage treatment efficiency is improved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a sewage treatment pond that can denitrogenate dephosphorization fast, includes coupling pond (1), chemistry dephosphorization pond (2), biological treatment pond (3) and clean water basin (4), its characterized in that:
the device is characterized in that a mixing pipe assembly (5) is arranged below the coupling pool (1), the mixing pipe assembly (5) is communicated with the clean water pool (4) and the coupling pool (1), a water supply pipe assembly (6) is arranged above the coupling pool (1), the water supply pipe assembly (6) is communicated with one end of a first connecting pipe (21), the other end of the first connecting pipe (21) is communicated with a chemical dephosphorization pool (2), a second connecting pipe (31) is communicated between the chemical dephosphorization pool (2) and the biological treatment pool (3), and a third connecting pipe (41) is communicated between the biological treatment pool (3) and the clean water pool (4);
the biological membrane biological treatment device is characterized in that a plurality of biological membrane carriers (101) are filled in the coupling tank (1), a first stirring assembly (8) and a mesh isolation assembly (7) are arranged in the coupling tank (1), a second stirring assembly (11) is arranged in the chemical phosphorus removal tank (2), a side frame (23) is vertically fixedly connected to one side of the chemical phosphorus removal tank (2), a phosphorus removal agent spraying machine (24) is fixedly connected to the side wall of the top of the side frame (23), and a filler assembly (9) and an aeration assembly (10) are arranged in the biological treatment tank (3);
the mesh isolation assembly (7) comprises an outer ring body (72) and an inner ring body (71) positioned at the center of the outer ring body (72), a mesh isolation annular plate (73) is horizontally fixedly connected between the inner ring body (71) and the outer ring body (72), and a plurality of biological film carriers (101) are positioned below the mesh isolation assembly (7);
the mixing tube assembly (5) comprises a spiral mixing tube (51) positioned at the bottom surface of the coupling tank (1) and a water inlet tank (54) positioned at the outer side of the coupling tank (1), the top surface of the spiral mixing tube (51) is vertically communicated with a plurality of water inlet sub-tubes (52), the water inlet sub-tubes (52) penetrate through the bottom surface of the coupling tank (1) and are communicated with the inside of the coupling tank (1), the bottom surface of the spiral mixing tube (51) is communicated with one end of a plurality of water inlet tubes (53), the other ends of the water inlet tubes (53) are communicated with the water inlet tank (54), the water inlet tank (54) is communicated with a sewage inlet (55), the bottom surface of the end part of the spiral mixing tube (51) is communicated with one end of a return tube (56), the other end of the return tube (56) is communicated with the chemical dephosphorization tank (2), and a fourth water suction pump (57) is fixedly connected to the return tube (56).
2. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 1, wherein: the filler assembly (9) comprises a frame (91), the frame (91) is inserted in the biological treatment tank (3), a plurality of L-shaped clamping plates (93) are fixedly connected to the top surfaces of two sides of the frame (91) respectively, the L-shaped clamping plates (93) are in contact with the top surface of the biological treatment tank (3), lifting rings (94) are fixedly connected to the top surfaces of the end parts of the L-shaped clamping plates (93), a plurality of cross rods (92) are horizontally fixedly connected in the frame (91), a plurality of vertical rods (95) are vertically fixedly connected to the bottom surfaces of the cross rods (92), and a plurality of filler parts (96) are fixedly connected to two sides of the vertical rods (95) respectively.
3. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 2, wherein: the packing part (96) comprises a net cover (962) and a box body (961) horizontally fixedly connected to the side wall of the vertical rod (95), biological packing (963) is filled in the box body (961), two side plates (964) are fixedly connected to the top surfaces of two sides of the box body (961), two mounting grooves (965) are respectively and horizontally formed in one side, close to each other, of the side plates (964), two sliding strips (966) are respectively and fixedly connected to the two sides of the bottom surface of the net cover (962), the sliding strips (966) are slidably inserted into the mounting grooves (965), and a plurality of strip-shaped openings (967) are respectively and horizontally formed in the two sides of the box body (961).
4. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 1, wherein: the water supply pipe assembly (6) comprises two supports (63) and a water absorption thin pipe (61) which are vertically and fixedly connected to the top surface of the coupling pool (1), the water absorption thin pipe (61) is positioned between the two supports (63), the top end of the water absorption thin pipe (61) is communicated with the first connecting pipe (21), the outer side of the lower part of the water absorption thin pipe (61) is slidingly sleeved with the water absorption thick pipe (62), two main through grooves (64) are respectively and vertically formed in the supports (63), two sliding blocks (65) are respectively and vertically connected to the main through grooves (64) in a sliding mode, and a connecting inclined rod (66) is fixedly connected between the sliding blocks (65) and the water absorption thick pipe (62).
5. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 4, wherein: the side through groove (67) is vertically formed in the outer side of the support (63), the side through groove (67) is communicated with the main through groove (64), the sliding block (65) is horizontally formed in the position close to the side through groove (67) and is connected with the screw rod (69) in a threaded mode, the end portion of the screw rod (69) penetrates through the side through groove (67) and is fixedly connected with the locking pressing plate (610), the locking pressing plate (610) is far away from the hand wheel (611) of one side of the screw rod (69), the locking pressing plate (610) is in contact with the side wall of the support (63), the lower limiting ring (612) is fixedly connected to the outer side of the bottom end of the water absorption thin tube (61), and the lower sealing ring (613) is fixedly connected to the outer side of the lower limiting ring (612). The lower sealing ring (613) is in interference fit with the inner side of the water absorption rough pipe (62), an upper limiting ring (614) is fixedly connected with the inner side of the top surface of the water absorption rough pipe (62), an upper sealing ring (615) is fixedly connected with the inner side of the upper limiting ring (614), and the upper sealing ring (615) is in interference fit with the outer side of the water absorption fine pipe (61).
6. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 1, wherein: the stirring device is characterized in that the first stirring assembly (8) comprises a transverse frame (81) horizontally fixedly connected to the top surface of the coupling tank (1), the free end of the transverse frame (81) is located at the central position of the coupling tank (1) and is fixedly connected with a sleeve (82) on the bottom surface, the sleeve (82) penetrates through the inner ring body (71), the stirring shaft (84) is vertically rotated in the sleeve (82), the outer side of the lower portion of the stirring shaft (84) is located below the sleeve (82) and is horizontally fixedly connected with a plurality of stirring rods (85), the top surface of the free end of the transverse frame (81) is fixedly connected with a first gear motor (83), and the rotating shaft end of the first gear motor (83) is fixedly connected with the top end of the stirring shaft (84).
7. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 1, wherein: the second stirring assembly (11) comprises a plurality of stirring shafts (112) which are horizontally and rotatably connected to the lower part of the chemical phosphorus removal tank (2) and a transmission chamber (111) fixedly connected to the side wall of the chemical phosphorus removal tank (2), a plurality of stirring blades (113) are uniformly fixedly connected to the outer side of the stirring shafts (112), a second gear motor (116) is fixedly connected to one end in the transmission chamber (111), a worm (117) is fixedly connected to the rotating shaft end of the second gear motor (116), a plurality of rotating rods (114) are fixedly connected to one end, close to the transmission chamber (111), of the stirring shafts (112), the rotating rods (114) penetrate through the side wall of the chemical phosphorus removal tank (2) and are located in the transmission chamber (111) and fixedly connected with worm gears (115), the worm gears (117) are meshed and connected with the side wall of the chemical phosphorus removal tank (2).
8. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 1, wherein: the aeration assembly (10) comprises an aeration fan (106) and an aeration plate (102) fixedly connected to the bottom surface of the biological treatment tank (3), a plurality of plate-type aeration pipes (103) are arranged on the top surface of the aeration plate (102), the top surface of each plate-type aeration pipe (103) is communicated with a plurality of aeration ports (104), the aeration fan (106) is communicated with one end of a plurality of air inlet pipes (105), and the other ends of the air inlet pipes (105) penetrate through the side wall of the biological treatment tank (3) and are communicated with the aeration plate (102).
9. The sewage treatment tank capable of rapidly removing nitrogen and phosphorus according to claim 1, wherein: the first connecting pipe (21) is fixedly connected with a first water suction pump (22), the second connecting pipe (31) is fixedly connected with a second water suction pump (32), the third connecting pipe (41) is fixedly connected with a third water suction pump (42), and the outer side of the clean water tank (4) is communicated with a drain pipe (43).
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