CN111635005B - Disinfection treatment method for deep denitrification and dephosphorization of municipal sewage - Google Patents

Disinfection treatment method for deep denitrification and dephosphorization of municipal sewage Download PDF

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CN111635005B
CN111635005B CN202010374853.7A CN202010374853A CN111635005B CN 111635005 B CN111635005 B CN 111635005B CN 202010374853 A CN202010374853 A CN 202010374853A CN 111635005 B CN111635005 B CN 111635005B
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tank
pipe
communicated
ammoniation
nitrification
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CN111635005A (en
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潘齐辉
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Inner Mongolia Silk Road Construction Engineering Co ltd
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Inner Mongolia Silk Road Construction Engineering Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a disinfection treatment method for deep nitrogen and phosphorus removal of municipal sewage, belonging to the field of sewage treatment, comprising a box body, wherein an ammoniation tank, a nitrification tank and a denitrification tank are respectively arranged in the box body, a liquid conveying pipe is communicated between the two adjacent tanks, the upper parts of the ammoniation tank are communicated with a liquid inlet pipe, the upper ends of the ammoniation tank, the nitrification tank and the denitrification tank are communicated with a feeding pipe, the invention can realize the retention time of oxygen bubbles in water, improve the dissolution rate of oxygen in water and increase the activity of biological bacteria, thereby improving the efficiency of biological reaction and the sewage treatment effect, an attachment rod imitating the shape of a cactus is utilized to provide an attachment point for the bubbles, thereby increasing the retention time of the bubbles in water, the attachment rod is arranged close to the position generated by the bubbles, preventing the bubbles from immediately floating up, and the opening and closing of a shaping cover are like the mouth of a fish to spit water, the volume of the bubbles can be increased, and the dissolved oxygen in the water can be further improved.

Description

Disinfection treatment method for deep denitrification and dephosphorization of municipal sewage
Technical Field
The invention relates to the field of sewage treatment, in particular to a disinfection treatment method for deep nitrogen and phosphorus removal of urban sewage.
Background
The research on the physical treatment method for nitrogen and phosphorus removal is systematically carried out from sixties abroad, and the results show that the physical method has the defects of large dosage, more sludge, high operation cost and the like. Thus, municipal sewage treatment plants are generally not recommended. Since the seventies, research is started abroad and biological nitrogen and phosphorus removal by an activated sludge process is gradually adopted. The biological nitrogen and phosphorus removal technology is researched from eighties in China, and the industrial process is gradually realized in the later period of the eighties.
The basic principle of biological nitrogen removal of wastewater is that on the basis of converting organic nitrogen into ammonia nitrogen, an aerobic section is firstly utilized to convert ammonia and nitrogen into nitrite nitrogen and nitrate nitrogen through nitrification under the synergistic action of nitrifying bacteria and nitrite bacteria, the nitrate nitrogen is converted into nitrogen through denitrification under the anoxic condition, an overflowing water surface is released to the atmosphere and participates in the circulation of natural nitrogen, biological phosphorus removal is to utilize phosphorus accumulating bacteria to release phosphorus in an anaerobic state, the phosphorus is taken from the outside in an aerobic state and is stored in a body in a polymerization state to form high-phosphorus sludge which is discharged out of the system, and the effect of removing phosphorus from wastewater is achieved.
However, in the existing biological nitrogen and phosphorus removal treatment, when aeration is performed in the aerobic tank, the retention time of bubbles formed by oxygen in water is short, the number of the formed bubbles is small, so that the oxygen dissolution rate in water is low, aerobic bacteria cannot play activity thoroughly, the biological reaction is influenced, and the sewage treatment effect is reduced.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a disinfection treatment method for deep nitrogen and phosphorus removal of municipal sewage, which can realize the retention time of oxygen bubbles in water, improve the dissolution rate of oxygen in water, increase the activity of biological bacteria, thereby improving the efficiency of biological reaction and the sewage treatment effect.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A disinfection treatment method for deep nitrogen and phosphorus removal of municipal sewage comprises a box body, wherein an ammoniation tank, a nitrification tank and a denitrification tank are respectively arranged in the box body, a liquid conveying pipe is communicated between two adjacent tanks, the upper part of the ammoniation tank is communicated with a liquid inlet pipe, the upper ends of the ammoniation tank, the nitrification tank and the denitrification tank are communicated with a feeding pipe, the feeding pipe positioned in the ammoniation tank is communicated with the liquid inlet pipe, the inner walls of the upper ends of the nitrification tank and the denitrification tank are fixedly connected with a flushing box, one end of the flushing box is provided with an opening, the feeding pipe and the liquid conveying pipe positioned in the nitrification tank and the denitrification tank are communicated with the flushing box together, an aeration fan is installed at the upper end of the nitrification tank, the nitrification tank is provided with an aeration pipe communicated with the aeration fan, the side wall of the aeration pipe is communicated with a plurality of diffusion covers, and the inner walls of the diffusion covers are fixedly connected with water baffle plates, and seted up a plurality of air vents on the breakwater, the inner wall of air vent is inlayed and is had the ventilated membrane, a plurality of moulding covers of lateral wall fixedly connected with of aeration pipe are kept away from to the breakwater, and every moulding cover all corresponds with an air vent, the inner wall fixedly connected with ring frame of breakwater is kept away from to the diffusion cover, and the montant of a plurality of vertical settings of fixedly connected with on the ring frame, a plurality of extension sticks of lateral wall fixedly connected with of montant, every extend a plurality of attachment rods of the equal fixedly connected with of lateral wall of stick, and a plurality of stick stings of equal fixedly connected with on every attachment rod, the bottom intercommunication in nitrification tank has the blowdown mud pipe, the lower extreme intercommunication in denitrification tank has the drain pipe, and the upper end intercommunication in denitrification tank has the outlet duct.
Furthermore, the inner wall of the upper end of the nitrification tank is provided with an oxygen aerator, the output end of the oxygen aerator penetrates into water, one part of oxygen is dissolved into the sewage, the other part of oxygen overflows, and the oxygen aerator injects the overflowed oxygen into the sewage again, so that the oxygen is fully utilized, the energy is saved, and the consumption is reduced.
Further, moulding cover includes two hemisphere shells, and two hemisphere shell dislocation set, moulding cover adopts rubber materials, and two hemisphere shells set up with embracing the mode, like the fish mouth, and two hemisphere shells adopt rubber materials to have elasticity moreover, can form a great bubble when oxygen extrudes from two hemisphere shells like this, imitates the phenomenon that the bubble was told to the fish mouth.
Furthermore, the outer surfaces of the extension rod, the attachment rod and the rod thorns are coated with inorganic salt, and the inorganic salt is a main nutrient for the growth of bacteria and aims to introduce the bacteria to a place with more oxygen, provide nutrient substances for the bacteria and increase the activity of the bacteria.
Furthermore, the diffusion cover is horn-shaped, the horn mouth of the diffusion cover is arranged outwards, the horn mouth of the diffusion cover is larger, and more oxygen bubbles can be generated conveniently.
Furthermore, the liquid inlet pipe is obliquely arranged so that the bacteria colony can be washed away by sewage.
Furthermore, the inner walls of the lower ends of the two scouring boxes are obliquely arranged, and the openings of the scouring boxes are downwards scoured in the oblique direction, so that bacteria groups can be scoured down by water.
Furthermore, the inner wall of the lower end of the nitrification tank is in a shape of a reversed hopper, so that sludge is conveniently discharged.
Furthermore, the opening part at the upper end of the air outlet pipe is rotatably connected with a cover plate, and the cover plate can be closed to prevent external oxygen from entering the denitrification tank under the condition of not exhausting air.
A disinfection treatment method for deep nitrogen and phosphorus removal of municipal sewage comprises the following steps:
s1, firstly, putting the pre-adjusted ammoniated bacteria group into an ammoniation tank through a feeding pipe, and enabling sewage to enter a tank body through a liquid inlet pipe to perform ammoniation in the ammoniation tank; putting the denitrifying bacteria into a denitrifying tank through a feeding pipe;
s2, putting the prepared nitrite flora and polyphosphate accumulating flora into a nitrification tank through a feeding pipe, pumping water in the ammoniation tank into the nitrification tank through a liquid conveying pipe, culturing the nitrate flora on an extension rod, an attachment rod and a rod thorn in advance, supplying oxygen to the nitrification tank through an aeration fan through an aeration pipe, generating nitrification in the process, and discharging sludge in time through a sludge discharge pipe;
and S3, putting the prepared denitrifying bacteria groups into a denitrifying tank through a feeding pipe, performing denitrification in an anaerobic environment, and discharging generated nitrogen through an air outlet pipe.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can realize the dwell time of oxygen bubble in aqueous, improve the dissolution rate of aquatic oxygen, increase the activity of biological bacterium, thereby improve biological reaction's efficiency and sewage treatment's effect, the stick that adheres to of utilizing the imitative cactus shape provides the attachment point for the bubble, increase the dwell time of bubble in aqueous with this, and the stick that adheres to is close to the position setting that the bubble produced, prevent that the bubble from floating up immediately, in addition the mouth of moulding cover opens and shuts like the fish and spits the bubble the same, can increase the volume of bubble, further improve the dissolved oxygen in aqueous.
(2) The oxygen machine is installed to the upper end inner wall of nitrifying the pond, and the output of oxygen machine runs through to the aquatic, and oxygen partly dissolves in the sewage, and partly overflows, and the oxygen machine pours into the sewage into again with the oxygen that overflows, make full use of oxygen, energy-conservation subtracts the consumption.
(3) Moulding cover includes two hemisphere shells, and two hemisphere shells dislocation set, and moulding cover adopts rubber materials, and two hemisphere shells set up with embracing the mode, like the fish mouth, and two hemisphere shells adopt rubber materials to have elasticity moreover, can form a great bubble like this when oxygen extrudes from two hemisphere shells, and the phenomenon of bubble is told to the emulation fish mouth.
(4) The outer surfaces of the extension rod, the attachment rod and the rod thorn are coated with inorganic salt which is a main nutrient for bacterial growth and aims to guide bacteria to a place with more oxygen, provide nutrient substances for the bacteria and increase the activity of the bacteria.
(5) The diffusion cover is horn-shaped, and the bell mouth of the diffusion cover is arranged outwards, so that the bell mouth of the diffusion cover is larger, and more oxygen bubbles can be generated conveniently.
(6) The liquid inlet pipe is obliquely arranged so that the bacteria colony is washed down by the sewage.
(7) The inner walls of the lower ends of the two scouring boxes are obliquely arranged, and the openings of the scouring boxes are scoured downwards in the oblique direction, so that the water scours the bacteria.
(8) The inner wall of the lower end of the nitrification tank is in a shape of a reversed hopper, so that the sludge is convenient to discharge.
(9) The opening at the upper end of the gas outlet pipe is rotatably connected with a cover plate, and the cover plate is closed to prevent external oxygen from entering the denitrification tank under the condition of not exhausting gas.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of the structure at B in FIG. 2;
FIG. 4 is a schematic front view of the diffusion cover of the present invention;
FIG. 5 is a schematic view of the structure at C in FIG. 4;
fig. 6 is a schematic front view of the present invention.
The reference numbers in the figures illustrate:
1 box body, 101 ammoniation tank, 102 nitrification tank, 103 denitrification tank, 2 infusion tubes, 3 liquid inlet tubes, 4 feeding tubes, 5 flushing box, 6 aeration blower, 7 aeration tube, 8 diffusion cover, 9 water baffle, 10 vent holes, 11 ventilated membrane, 12 shaping cover, 13 circular frame, 14 vertical rod, 15 extending rod, 16 attaching rod, 17 rod thorn, 18 sludge discharge tube, 19 liquid outlet tube, 20 air outlet tube and 21 oxygen inflator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-6, a disinfection method for deep nitrogen and phosphorus removal of municipal sewage comprises a box body 1, referring to fig. 1, an ammoniation tank 101, a nitrification tank 102 and a denitrification tank 103 are arranged in the box body 1, the inner wall of the lower end of the nitrification tank 102 is in a reversed bucket shape to facilitate the discharge of sludge, a liquid conveying pipe 2 is communicated between two adjacent tanks, a liquid inlet pipe 3 is communicated with the upper part of the ammoniation tank 101, the liquid inlet pipe 3 is obliquely arranged so that bacteria are washed away by sewage, feeding pipes 4 are communicated with the upper ends of the ammoniation tank 101, the nitrification tank 102 and the denitrification tank 103, the feeding pipes 4 in the ammoniation tank 101 are communicated with the liquid inlet pipe 3, washing tanks 5 are fixedly connected with the inner walls of the upper ends of the nitrification tank 102 and the denitrification tank 103, the inner walls of the lower ends of the two washing tanks 5 are obliquely arranged, and the openings of the washing tanks 5 are washed away downwards in an oblique direction so that bacteria are washed away by water, an opening is formed in one end of the flushing box 5, a feeding pipe 4 and a liquid conveying pipe 2 which are positioned in the nitrification tank 102 and the denitrification tank 103 are communicated with the flushing box 5 together, an aeration fan 6 is installed at the upper end of the nitrification tank 102, the nitrification tank 102 is provided with an aeration pipe 7 communicated with the aeration fan 6, the side wall of the aeration pipe 7 is communicated with a plurality of diffusion covers 8, the diffusion covers 8 are horn-shaped, the horn mouths of the diffusion covers 8 are arranged outwards, the horn mouths of the diffusion covers 8 are large, more oxygen bubbles can be conveniently generated, an aerator 21 is installed on the inner wall of the upper end of the nitrification tank 102, the output end of the aerator 21 penetrates into water, one part of oxygen is dissolved into the sewage, one part of oxygen overflows, the aerator 21 injects the overflowed oxygen into the sewage again, the oxygen is fully utilized, energy is saved, and consumption is reduced;
referring to fig. 2-3, the inner wall of the diffusion cover 8 is fixedly connected with a water baffle 9, the water baffle 9 is provided with a plurality of vent holes 10, the inner wall of the vent holes 10 is inlaid with a breathable film 11, the side wall of the water baffle 9 far away from the aeration pipe 7 is fixedly connected with a plurality of shaping covers 12, the shaping covers 12 comprise two hemispherical shells, the two hemispherical shells are arranged in a staggered manner, the shaping covers 12 are made of rubber materials, the two hemispherical shells are arranged in a manner of embracing like a fish mouth, and the two hemispherical shells are made of rubber materials and have elasticity, so that when oxygen is extruded from the two hemispherical shells, a large bubble can be formed to simulate the phenomenon that the fish mouth spits the bubble, and each shaping cover 12 corresponds to one vent hole 10;
referring to fig. 4-5, an inner wall of the diffusion cover 8, which is far away from the water baffle 9, is fixedly connected with a circular frame 13, the circular frame 13 is fixedly connected with a plurality of vertical rods 14 which are vertically arranged, side walls of the vertical rods 14 are fixedly connected with a plurality of extension rods 15, side walls of each extension rod 15 are fixedly connected with a plurality of attachment rods 16, each attachment rod 16 is fixedly connected with a plurality of rod spines 17, outer surfaces of the extension rods 15, the attachment rods 16 and the rod spines 17 are coated with inorganic salt which is a main nutrient for bacterial growth, and the purpose is to guide bacteria to places with more oxygen and provide nutrient substances for the bacteria and increase activity of the bacteria, the bottom of the nitrification tank 102 is communicated with a sludge discharge pipe 18, the lower end of the denitrification tank 103 is communicated with a liquid outlet pipe 19, the upper end of the denitrification tank 103 is communicated with an air outlet pipe 20, an upper end opening of the air outlet pipe 20 is rotatably connected with a cover plate, and under the condition that no gas is discharged, the cover plate can prevent external oxygen from entering the denitrification tank 103.
The method comprises the following steps:
s1, firstly, putting the preadjusted ammoniated bacteria group into an ammoniation tank 101 through a feeding pipe 4, and putting sewage into a tank body 1 through a liquid inlet pipe 3 to perform ammoniation in the ammoniation tank 101; putting denitrifying bacteria into a denitrifying tank 103 through a feeding pipe 4;
s2, putting the prepared nitrite flora and polyphosphate accumulating flora into a nitrification tank 102 through a feeding pipe 4, pumping water in the ammoniation tank 101 into the nitrification tank 102 through a liquid conveying pipe 2, culturing the nitrite flora on an extension rod 15, an attachment rod 16 and a rod thorn 17 in advance, supplying oxygen into the nitrification tank 102 through an aeration pipe 7 by an aeration fan 6, generating nitrification in the process, and discharging sludge in time through a sludge discharge pipe 18;
s3, the prepared denitrifying bacteria are put into the denitrifying tank 103 through the feeding pipe 4, the denitrifying action is generated in the anaerobic environment, and the generated nitrogen is discharged through the gas outlet pipe 20.
It can realize the dwell time of oxygen bubble in aqueous, improve the dissolution rate of aquatic oxygen, increase the activity of biological bacterium, thereby improve biological reaction's efficiency and sewage treatment's effect, the adhesion rod that utilizes the imitative cactus shape provides the attachment point for the bubble, increase the dwell time of bubble in aqueous with this, and the adhesion rod is close to the position setting that the bubble produced, prevent that the bubble from floating immediately, in addition the opening and shutting of moulding cover is like the mouth of fish spitting the bubble, can increase the volume of bubble, further improve the dissolved oxygen of aquatic.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims (9)

1. The utility model provides a degassing unit of municipal sewage degree of depth nitrogen and phosphorus removal, includes box (1), be equipped with ammoniation pond (101), nitrification tank (102) and denitrification pond (103) in box (1), and the intercommunication has transfer line (2) between two adjacent ponds, the upper portion intercommunication of ammoniation pond (101) has feed liquor pipe (3), its characterized in that: the upper ends of the ammoniation tank (101), the nitrification tank (102) and the denitrification tank (103) are communicated with a feeding pipe (4), the feeding pipe (4) in the ammoniation tank (101) is communicated with a liquid inlet pipe (3), the inner walls of the upper ends of the nitrification tank (102) and the denitrification tank (103) are fixedly connected with a flushing box (5), one end of the flushing box (5) is provided with an opening, the feeding pipe (4) and the liquid conveying pipe (2) in the nitrification tank (102) and the denitrification tank (103) are communicated with the flushing box (5) together, the upper end of the nitrification tank (102) is provided with an aeration fan (6), the nitrification tank (102) is provided with an aeration pipe (7) communicated with the aeration fan (6), the side wall of the aeration pipe (7) is communicated with a plurality of diffusion covers (8), the inner wall of each diffusion cover (8) is fixedly connected with a water baffle (9), and the water baffle (9) is provided with a plurality of vent holes (10), a breathable film (11) is embedded in the inner wall of the vent hole (10), a plurality of shaping covers (12) are fixedly connected to the side wall of the water baffle (9) far away from the aerator pipe (7), each shaping cover (12) corresponds to one vent hole (10), the inner wall of the diffusion cover (8) far away from the water baffle (9) is fixedly connected with a circular ring frame (13), and the circular ring frame (13) is fixedly connected with a plurality of vertical rods (14) which are vertically arranged, the side wall of the vertical rod (14) is fixedly connected with a plurality of extension rods (15), the side wall of each extension rod (15) is fixedly connected with a plurality of attachment rods (16), and each attachment rod (16) is fixedly connected with a plurality of rod thorns (17), the bottom of the nitrification tank (102) is communicated with a sludge discharge pipe (18), the lower end of the denitrification tank (103) is communicated with a liquid outlet pipe (19), and the upper end of the denitrification tank (103) is communicated with a gas outlet pipe (20);
moulding cover (12) include two hemisphere shells, and two hemisphere shell dislocation set, moulding cover (12) adopt rubber materials.
2. The device of claim 1, wherein the device comprises: an oxygen aerator (21) is arranged on the inner wall of the upper end of the nitrification tank (102), and the output end of the oxygen aerator (21) penetrates into the water.
3. The device of claim 1, wherein the device comprises: the outer surfaces of the extension rod (15), the attachment rod (16) and the rod thorn (17) are coated with inorganic salt.
4. The device of claim 1, wherein the device comprises: the diffusion cover (8) is horn-shaped, and the horn mouth of the diffusion cover (8) is arranged outwards.
5. The device of claim 1, wherein the device comprises: the liquid inlet pipe (3) is obliquely arranged.
6. The device of claim 1, wherein the device comprises: the inner walls of the lower ends of the two flushing boxes (5) are obliquely arranged, and the openings of the flushing boxes (5) are downwards flushed in the oblique direction.
7. The device of claim 1, wherein the device comprises: the inner wall of the lower end of the nitrification tank (102) is in a shape of a reversed hopper.
8. The device of claim 1, wherein the device comprises: the opening at the upper end of the air outlet pipe (20) is rotatably connected with a cover plate.
9. The disinfection treatment method of the disinfection device for advanced nitrogen and phosphorus removal of municipal sewage according to claim 1, which is characterized in that: the method comprises the following steps:
s1, firstly, putting the pre-adjusted ammoniated bacteria group into an ammoniation tank (101) through a feeding pipe (4), and sewage enters a tank body (1) through a liquid inlet pipe (3) to be ammoniated in the ammoniation tank (101); putting denitrifying bacteria into a denitrifying tank (103) through a feeding pipe (4);
s2, putting prepared nitrite flora and phosphorus-accumulating flora into a nitrification tank (102) through a feeding pipe (4), pumping water in an ammoniation tank (101) into the nitrification tank (102) through a liquid conveying pipe (2), culturing the nitrate flora on an extension rod (15), an attachment rod (16) and a rod thorn (17) in advance, supplying oxygen into the nitrification tank (102) through an aeration fan (6) through an aeration pipe (7), generating nitrification in the process, and discharging sludge through a sludge discharge pipe (18) in time;
s3, the prepared denitrifying bacteria are put into a denitrifying tank (103) through a feeding pipe (4) to generate denitrification in an anaerobic environment, and the generated nitrogen is discharged through an air outlet pipe (20).
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