CN113003860A

CN113003860A - Urban sewage treatment equipment

Info

Publication number: CN113003860A
Application number: CN202110200149.4A
Authority: CN
Inventors: 刘苗
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2021-06-22

Abstract

The invention discloses urban sewage treatment equipment which comprises a denitrification tank, a dephosphorization tank and a dosing tank, wherein a first motor is fixedly installed at the center of the top surface of the denitrification tank, and the output end of the first motor penetrates through the denitrification tank and is rotatably connected with a first stirring paddle. Has the advantages that: the sewage is sequentially introduced into the denitrification tank, the dephosphorization tank and the dosing tank, then the first motor and the second motor are respectively started to enable the first stirring paddle and the second stirring paddle to respectively disturb the sewage in the denitrification tank and the dephosphorization tank, so that strains in the denitrification carrier disc and the dephosphorization carrier disc (a biological filter material carrying anaerobic denitrification strains is arranged in the denitrification carrier disc, and an aerobic strain biological filter material is arranged in the dephosphorization carrier disc) are fully contacted with the sewage, and the secondary treatment in a medicament form is carried out on the sewage after the biological treatment by gradually adding the denitrification and dephosphorization medicaments into the dosing tank, so that the synchronous proceeding of the biological treatment and the medicament treatment of the sewage is realized.

Description

Urban sewage treatment equipment

Technical Field

The invention relates to the technical field of sewage treatment, in particular to urban sewage treatment equipment.

Background

Along with the development of cities, the population is increasing, more and more industrial sewage and domestic sewage are generated, the sewage treatment becomes a major problem which needs to be solved immediately, the sewage treatment refers to the process of purifying the sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage, the sewage treatment is widely applied to various fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, the sewage treatment also increasingly enters the daily life of common people, the modes of the sewage treatment are various, wherein the mode of removing nitrogen and phosphorus in the sewage by using microorganisms is an environment-friendly mode, the process of converting various nitrogen-containing compounds in the sewage into molecular nitrogen by nitrification and denitrification is a principle of discharging phosphorus under an anaerobic condition and excessively absorbing phosphorus under an aerobic condition by using microorganisms, thereby removing the phosphorus in the wastewater.

At present, in the process of carrying out microbial treatment on urban sewage treatment equipment, the sewage treatment time is long, and the problem that a small amount of nitrogen and phosphorus are remained in the treated sewage still exists, so that the efficiency and the quality of sewage treatment are influenced.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides urban sewage treatment equipment which has the advantages of high-efficiency nitrogen and phosphorus removal of sewage, and further solves the problems in the background art.

(II) technical scheme

In order to realize the advantages of high-efficiency nitrogen and phosphorus removal of the sewage, the invention adopts the following specific technical scheme:

municipal sewage treatment equipment comprises a denitrification tank, a dephosphorization tank and a dosing tank, wherein a first motor is fixedly installed at the center of the top surface of the denitrification tank, the output end of the first motor penetrates through the denitrification tank and is rotatably connected with a first stirring paddle, a denitrification carrier disc is welded at the lower part of the inner side of the denitrification tank, a first water outlet is formed in the surface of the lower part of the denitrification tank, a first communication pipe is connected to one end of the first water outlet through a flange, a first water pump is installed on the surface of the first communication pipe, a dephosphorization tank is arranged at one side of the denitrification tank, the surface of the upper part of the dephosphorization tank is communicated with the first communication pipe through a second water inlet, a second motor is fixedly installed at the center of the top surface of the dephosphorization tank, the output end of the second motor penetrates through the dephosphorization tank and is rotatably connected with a second stirring paddle, a dephosphorization carrier disc is welded at the lower part of the inner side, dephosphorization jar lower part surface intercommunication has second communicating pipe, dephosphorization jar one side is provided with the pond of adding medicine, and adds the interior wall bolt fixed mounting of medicine pond and have a medicine fill, the surface mounting of second communicating pipe has the second water pump, and the one end of second communicating pipe extends to the pond of adding medicine inboard.

Further, the dephosphorization tank surface has the aeration pump through backup pad fastening installation, and the aeration pump has the U type pipe through the pipeline intercommunication, dephosphorization tank and even gas tray intercommunication are all run through at the both ends of U type pipe, even gas tray one side surface intercommunication has a plurality of outlet ducts, and the surperficial equidistance of a plurality of outlet ducts has seted up a plurality of ventholes, the second gas vent has been seted up to the top surface of dephosphorization tank, and the one end flange joint of second gas vent has the bleed pipe, the inboard underrun U type clamp fixed mounting of dosing tank has the air duct, and the side intercommunication of air duct has the side pipe, a plurality of exhaust holes have been seted up to the surface equidistance of side pipe, the one end of bleed pipe and the intermediate position intercommunication of air duct.

Further, a plurality of horn mouths have been seted up to the bottom surface equidistance of medicine feeding fill, the side welding of medicine feeding fill has the curb plate, and the surface of curb plate has seted up two mounting holes, two all alternate in the mounting hole and be connected with the bolt, and the one end of bolt and the top surface fixed connection who adds the medicine pond.

Furthermore, the outer surface of the denitrification tank is provided with a control panel, and the output end of the control panel is respectively and electrically connected with the first motor, the first water pump, the second motor, the second water pump and the aeration pump.

Furthermore, a water level gauge is fixedly installed on the inner side of the dosing tank.

Further, denitrogenation carrier dish is the same with dephosphorization carrier dish structure, and denitrogenation carrier dish and dephosphorization carrier dish's both sides all are provided with leading-out end pipe and leading-in end pipe, the equal threaded connection in port department of leading-out end pipe and leading-in end pipe has the thread cover.

Furthermore, the surface of the air duct is communicated with a plurality of side pipes, and the side pipes are arranged on the surface of the air duct in a group of two side pipes at equal intervals.

Further, first water inlet has been seted up on the upper portion surface of denitrogenation jar, and first row of cinder notch has been seted up to the below of first water inlet, first gas vent has been seted up to denitrogenation jar top surface edge, manual valve is all installed on first water inlet, first gas vent, first row of cinder notch and first delivery port surface.

Furthermore, a second slag discharge port is formed in the surface of the lower portion of the phosphorus removal tank, manual valves are mounted on the surfaces of the second slag discharge port and the second communicating pipe, and a check valve is mounted on the surface of the gas guide pipe.

(III) advantageous effects

Compared with the prior art, the invention provides urban sewage treatment equipment, which has the following beneficial effects:

(1) the sewage is sequentially introduced into the denitrification tank, the dephosphorization tank and the dosing tank, then the first motor and the second motor are respectively started to enable the first stirring paddle and the second stirring paddle to respectively disturb the sewage in the denitrification tank and the dephosphorization tank, so that strains in the denitrification carrier disc and the dephosphorization carrier disc (a biological filter material carrying anaerobic denitrification strains is arranged in the denitrification carrier disc, and an aerobic strain biological filter material is arranged in the dephosphorization carrier disc) are fully contacted with the sewage, and the denitrification and dephosphorization agents are gradually added into the dosing tank, so that the sewage is subjected to secondary treatment in an agent form after biological treatment, the synchronous treatment of the biological treatment and the agent treatment of the sewage is realized, the time for treating the biological sewage can be shortened, and the efficiency and the quality for denitrifying and dephosphorizing the sewage are effectively increased.

(2) According to the invention, the aeration pump fixedly mounted on the outer surface of the phosphorus removal tank is opened, so that the aeration pump can inject air into the U-shaped pipe under the action of a pipeline, and then the air is synchronously guided into the air homogenizing disc in the phosphorus removal tank from two ends of the U-shaped pipe, so that the air is uniformly injected into the phosphorus removal tank from the air outlet holes on the surfaces of the air outlet pipes, uniform oxygen supply of sewage in the phosphorus removal tank is realized, efficient phosphorus removal of the sewage is facilitated, meanwhile, the air guide pipe connected with the flange of the second air outlet on the top surface of the phosphorus removal tank can guide the air injected into the phosphorus removal tank into the air guide pipe in the medicine adding tank, so that the air enters the medicine adding tank from the air outlet holes on the surfaces of a plurality of groups of side pipes, and disturbance of the sewage in.

(3) According to the invention, the bolt penetrates through the mounting hole of the side plate and is fixedly connected with the top surface of the dosing tank, so that the dosing hopper is mounted, and when a denitrification and dephosphorization agent is added, the denitrification and dephosphorization agent can enter the dosing tank through the plurality of horn mouths on the bottom surface of the dosing hopper, so that the uniformity of adding the agent can be increased, and the condition that the agent is lost due to the influence of wind direction can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view showing the internal structure of a municipal sewage treatment apparatus according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a dephosphorization tank of the municipal sewage treatment equipment according to the embodiment of the invention;

FIG. 3 is a schematic structural view of a chemical adding tank of the municipal sewage treatment equipment according to the embodiment of the invention;

FIG. 4 is a schematic structural view of an air homogenizing disc of a municipal sewage treatment plant according to an embodiment of the invention;

FIG. 5 is a schematic view showing the structure of a denitrification carrier tray of a municipal sewage treatment apparatus according to an embodiment of the invention;

FIG. 6 is a schematic structural view of a chemical feeding hopper of the municipal sewage treatment equipment according to the embodiment of the invention.

In the figure:

1. a denitrification tank; 2. a first water inlet; 3. a first motor; 4. a first exhaust port; 5. a control panel; 6. a first slag discharge port; 7. a first stirring paddle; 8. a denitrification carrier disc; 9. a first water outlet; 10. a first communication pipe; 11. a first water pump; 12. a U-shaped pipe; 13. a second water inlet; 14. a phosphorus removal tank; 15. a second motor; 16. a second exhaust port; 17. a bleed pipe; 18. a second slag discharge port; 19. a phosphorus removal carrier tray; 20. a second stirring paddle; 21. an air homogenizing disc; 22. a second communicating pipe; 23. a second water pump; 24. a water level gauge; 25. a medicine adding pool; 26. an air duct; 27. a side tube; 28. a medicine feeding hopper; 29. an aeration pump; 30. a bell mouth; 31. a U-shaped clamp; 32. an exhaust hole; 33. an air outlet pipe; 34. an air outlet; 35. a leading-out end pipe; 36. a threaded cap; 37. a leading-in end pipe; 38. a side plate; 39. and (7) installing holes.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, there is provided a municipal sewage treatment apparatus.

Referring to the drawings and the detailed description, the present invention is further described, as shown in fig. 1-6, an apparatus for treating municipal sewage according to an embodiment of the present invention includes a denitrification tank 1, a dephosphorization tank 14 and a dosing tank 25, wherein a first motor 3 is tightly mounted at the center of the top surface of the denitrification tank 1, an output end of the first motor 3 penetrates through the denitrification tank 1 and is rotatably connected with a first stirring paddle 7, a denitrification carrier plate 8 is welded at the lower part of the inner side of the denitrification tank 1, a first water outlet 9 is formed on the surface of the lower part of the denitrification tank 1, a first connecting pipe 10 is flanged to one end of the first water outlet 9, a first water pump 11 is mounted on the surface of the first connecting pipe 10, the dephosphorization tank 14 is disposed at one side of the denitrification tank 1, the upper surface of the dephosphorization tank 14 is communicated with the first connecting pipe 10 through a second water inlet 13, a second motor 15 is tightly mounted at the center of the top surface of the dephosphorization tank 14, and an output end of the, a dephosphorization carrier disc 19 is welded at the lower part of the inner side of the dephosphorization tank 14, a gas homogenizing disc 21 is welded on the inner wall surface of the dephosphorization tank 14 above the dephosphorization carrier disc 19, a second communicating pipe 22 is communicated with the surface of the lower part of the dephosphorization tank 14, a dosing tank 25 is arranged at one side of the dephosphorization tank 14, a dosing hopper 28 is fixedly installed on the inner wall surface of the dosing tank 25 through bolts, a second water pump 23 is installed on the surface of the second communicating pipe 22, one end of the second communicating pipe 22 extends to the inner side of the dosing tank 25, the dosing hopper 28 is fixedly installed at the edge of the inner side of the dosing tank 25 through bolts, sewage is sequentially introduced into the denitrification tank 1 and the dephosphorization tank 14 for a period of time (2-3h), then the first motor 3 and the second motor 15 are respectively started, the first stirring paddle 7 and the second stirring paddle 20 are respectively made to disturb the sewage in the denitrification tank 1 and the dephosphorization tank 14, so that the strains in the denitrification carrier disc 8 and the dephosphorization carrier disc 19 (the biological filter material carrying anaerobic denitrification strains, set up in dephosphorization carrier dish 19 and carry aerobic type bacterial biological filter material) and sewage and fully contact, realize the biological treatment of sewage, then let sewage in dosing tank 25 through second water pump 23, through adding the medicament of denitrogenation and dephosphorization to dosing tank 25 one by one, the medicament that impels denitrogenation and dephosphorization can pass through a plurality of horn mouths 30 of dosing fill 28 bottom surface and get into dosing tank 25 in, make sewage carry out the secondary treatment of medicament form after biological treatment, realize going on in step of biological and medicament treatment of sewage, can both shorten biological sewage treatment's time, also effectively increase the efficiency and the quality of sewage denitrogenation and dephosphorization.

In one embodiment, an aeration pump 29 is fixedly mounted on the outer surface of the phosphorus removal tank 14 through a support plate, the aeration pump 29 is communicated with a U-shaped pipe 12 through a pipeline, two ends of the U-shaped pipe 12 both penetrate through the phosphorus removal tank 14 and are communicated with an air distribution disc 21, a plurality of air outlet pipes 33 are communicated with one side surface of the air distribution disc 21, a plurality of air outlet holes 34 are equidistantly formed in the surfaces of the air outlet pipes 33, a second air outlet 16 is formed in the top surface of the phosphorus removal tank 14, an air guide pipe 17 is connected to one end of the second air outlet 16 in a flange manner, an air guide pipe 26 is fixedly mounted on the bottom surface of the inner side of the dosing tank 25 through a U-shaped clamp 31, a side pipe 27 is communicated with the side surface of the air guide pipe 26, a plurality of air outlet holes 32 are equidistantly formed in the surface of the side pipe 27, one end of the air guide pipe 17 is communicated with the middle position of the air, and then lead into the even air pan 21 of the inside of dephosphorization tank 14 by the both ends of U-shaped pipe 12 in step, make the air evenly penetrate the dephosphorization tank 14 by the venthole 34 on a plurality of outlet ducts 33 surface, realize the even oxygen suppliment of the interior sewage of dephosphorization tank 14, be favorable to the high-efficient of sewage dephosphorization to go on, simultaneously, through the bleed pipe 17 with the second gas vent 16 flange joint of dephosphorization tank 14 top surface, can lead into the air duct 26 in the dosing tank 25 with the air that penetrates the inside of dephosphorization tank 14, make the air get into the dosing tank 25 by the exhaust hole 32 on the surface of multiunit side pipe 27, realize the disturbance of the interior sewage of dosing tank 25, thereby guarantee the mixed effect of medicament and sewage of denitrogenation and dephosphorization.

In an embodiment, a plurality of horn mouths 30 have been seted up to the bottom surface equidistance of medicine fill 28, the side welding of medicine fill 28 has curb plate 38, and two mounting holes 39 have been seted up on the surface of curb plate 38, all the interlude is connected with the bolt in two mounting holes 39, and the one end of bolt and the top surface fixed connection who adds medicine pond 25, the top surface fixed connection of mounting hole 39 and the medicine pond 25 that runs through curb plate 38 through the bolt, realize the installation of medicine fill 28, when adding the medicament of denitrogenation and dephosphorization, the medicament of denitrogenation and dephosphorization can see through in a plurality of horn mouths 30 entering medicine pond 25 that add medicine fill 28 bottom surface, can enough increase the homogeneity that the medicament added, and can avoid the medicament to produce the condition of loss because of the wind direction influence.

In one embodiment, the control panel 5 is disposed on the outer surface of the denitrification tank 1, the output end of the control panel 5 is electrically connected with the first motor 3, the first water pump 11, the second motor 15, the second water pump 23 and the aeration pump 29 respectively, the control panel 5 is convenient for the switching of the first motor 3, the first water pump 11, the second motor 15, the second water pump 23 and the aeration pump 29, and the control circuit of the control panel 5 can be realized through simple programming by a person skilled in the art, which belongs to common knowledge in the art, and is only used without modification, so the detailed description of the control mode and circuit connection is omitted.

In one embodiment, a water level gauge 24 is fixedly installed on the inner side of the dosing tank 25, the water level in the dosing tank 25 is conveniently observed through the water level gauge 24, and the accommodating space in the dosing tank 25 is fixed, so that the water quantity in the dosing tank 25 can be roughly calculated, and proper addition of nitrogen and phosphorus removal agents is facilitated.

In one embodiment, the denitrification carrier disc 8 and the dephosphorization carrier disc 19 have the same structure, and the two sides of the denitrification carrier disc 8 and the dephosphorization carrier disc 19 are respectively provided with an outlet end pipe 35 and an inlet end pipe 37, the port openings of the outlet end pipe 35 and the inlet end pipe 37 are respectively in threaded connection with a threaded cover 36, the biological filler is convenient to discharge and replace through the outlet end pipe 35 and the inlet end pipe 37, and the threaded cover 36 can increase the sealing performance of the denitrification carrier disc 8 and the dephosphorization carrier disc 19, wherein the denitrification carrier disc 8 is internally provided with a biological filter material carrying anaerobic denitrification bacteria, and the dephosphorization carrier disc 19 is internally provided with a biological filter material carrying aerobic bacteria, which is beneficial for denitrification and dephosphorization of sewage.

In one embodiment, the surface of the air duct 26 is communicated with a plurality of side pipes 27, and the plurality of side pipes 27 are arranged on the surface of the air duct 26 in a group of two by two at equal intervals, so that the uniformity of air penetration into the dosing tank 25 is increased through the plurality of side pipes 27 and the air exhaust holes 32 on the surface of the side pipes 27.

In one embodiment, first water inlet 2 has been seted up on the upper portion surface of denitrogenation jar 1, and first deslagging mouth 6 has been seted up to the below of first water inlet 2, first gas vent 4 has been seted up to denitrogenation jar 1 top surface edge, first water inlet 2, first deslagging mouth 4, manual valve is all installed on first deslagging mouth 6 and first delivery port 9 surface, through closing first water inlet 2, first gas vent 4, first deslagging mouth 6 and first delivery port 9 surface mounting have manual valve, make denitrogenation jar 1 can form confined space, be favorable to the formation of the environment of anaerobism or oxygen deficiency, make things convenient for the derivation of sewage precipitate through first deslagging mouth 6.

In one embodiment, the second slag discharge port 18 is opened on the lower surface of the phosphorus removal tank 14, manual valves are installed on the surfaces of the second slag discharge port 18 and the second communicating pipe 22, a check valve is installed on the surface of the air guide pipe 17, the phosphorus removal tank 14 is conveniently closed through the second slag discharge port 18 and the manual valves of the second communicating pipe 22, sewage treatment of the phosphorus removal tank 14 and air outlet of the second air outlet 16 are facilitated, sewage backflow is avoided through the check valve on the surface of the air guide pipe 17, and sewage precipitates are conveniently led out through the second slag discharge port 18.

The working principle is as follows:

when in use, the device is moved to a proper position, the power supply is switched on, then the dosing hopper 28 is fixedly arranged at the edge of the inner side of the dosing tank 25 through bolts, sewage is sequentially led into the denitrification tank 1 and the dephosphorization tank 14 for a period of time (2-3h), then the first motor 3 and the second motor 15 are respectively started to cause the first stirring paddle 7 and the second stirring paddle 20 to respectively disturb the sewage in the denitrification tank 1 and the dephosphorization tank 14, so that strains in the denitrification carrier disc 8 and the dephosphorization carrier disc 19 (a biological filter material carrying anaerobic denitrification strains is arranged in the denitrification carrier disc 8, an aerobic strain biological filter material is arranged in the dephosphorization carrier disc 19) are fully contacted with the sewage to realize the biological treatment of the sewage, then the sewage is led into the dosing tank 25 through the second water pump 23, and medicaments for denitrification and dephosphorization are gradually added into the dosing tank 25, the reagent for promoting nitrogen and phosphorus removal can enter the dosing tank 25 through the plurality of bell mouths 30 on the bottom surface of the dosing hopper 28, so that the sewage is subjected to secondary treatment in a reagent form after biological treatment, the synchronous operation of the biological treatment and the reagent treatment of the sewage is realized, the time for biological sewage treatment can be shortened, and the nitrogen and phosphorus removal efficiency and quality of the sewage can be effectively increased, meanwhile, the aeration pump 29 fixedly arranged on the outer surface of the phosphorus removal tank 14 is started, the aeration pump 29 is promoted to inject air into the U-shaped pipe 12 under the action of a pipeline, then the air is synchronously guided into the air distribution disc 21 in the phosphorus removal tank 14 from the two ends of the U-shaped pipe 12, so that the air is uniformly injected into the phosphorus removal tank 14 through the air outlet holes 34 on the surface of the plurality of air outlet pipes 33, the uniform oxygen supply of the sewage in the phosphorus removal tank 14 is realized, the efficient operation of the phosphorus removal of the sewage is facilitated, and meanwhile, can be with the leading-in air duct 26 that adds in the pond 25 of dosing of the inside air that penetrates dephosphorization tank 14 for the air gets into the pond 25 of dosing by the exhaust hole 32 on multiunit side pipe 27 surface, realizes the disturbance of the interior sewage of pond 25 of dosing, thereby the mixed effect of medicament and the sewage of guarantee denitrogenation and dephosphorization.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. Municipal sewage treatment equipment, which is characterized by comprising a denitrification tank (1), a dephosphorization tank (14) and a dosing tank (25), wherein the center of the top surface of the denitrification tank (1) is provided with a first motor (3), the output end of the first motor (3) penetrates through the denitrification tank (1) and is rotatably connected with a first stirring paddle (7), the inner lower part of the denitrification tank (1) is welded with a denitrification carrier disc (8), the surface of the lower part of the denitrification tank (1) is provided with a first water outlet (9), one end of the first water outlet (9) is connected with a first communicating pipe (10) by a flange, the surface of the first communicating pipe (10) is provided with a first water pump (11), one side of the denitrification tank (1) is provided with the dephosphorization tank (14), the upper surface of the dephosphorization tank (14) is communicated with the first communicating pipe (10) by a second water inlet (13), the center of the top surface of the dephosphorization tank (14) is provided with a second motor (15), and the output of second motor (15) runs through dephosphorization tank (14) and rotates and be connected with second stirring rake (20), dephosphorization carrier dish (19) have been welded to dephosphorization tank (14) inboard lower part, and dephosphorization carrier dish (19) top is located dephosphorization tank (14) internal face and has been welded even gas dish (21), dephosphorization tank (14) lower part surface intercommunication has second communicating pipe (22), dephosphorization tank (14) one side is provided with medicine pond (25), and adds medicine pond (25) internal face bolt fixed mounting and have medicine fill (28), the surface mounting of second communicating pipe (22) has second water pump (23), and the one end of second communicating pipe (22) extends to medicine pond (25) inboard.

2. The municipal sewage treatment equipment according to claim 1, wherein the outer surface of the dephosphorization tank (14) is fixedly provided with an aeration pump (29) through a support plate, the aeration pump (29) is communicated with a U-shaped pipe (12) through a pipeline, both ends of the U-shaped pipe (12) penetrate through the dephosphorization tank (14) and are communicated with an air distribution disc (21), the surface of one side of the air distribution disc (21) is communicated with a plurality of air outlet pipes (33), the surface of the plurality of air outlet pipes (33) is equidistantly provided with a plurality of air outlet holes (34), the top surface of the dephosphorization tank (14) is provided with a second air outlet (16), one end of the second air outlet (16) is connected with an air guide pipe (17) through a flange, the bottom surface of the inner side of the dosing tank (25) is fixedly provided with an air guide pipe (26) through a U-shaped clamp (31), the side surface of the air guide pipe (26) is communicated with a side pipe (27), the surface of the side, one end of the air guide pipe (17) is communicated with the middle position of the air guide pipe (26).

3. The municipal sewage treatment equipment according to claim 1, wherein the bottom surface of the dosing hopper (28) is provided with a plurality of bell mouths (30) at equal intervals, the side surface of the dosing hopper (28) is welded with a side plate (38), the surface of the side plate (38) is provided with two mounting holes (39), the two mounting holes (39) are internally provided with bolts in a penetrating manner, and one ends of the bolts are fixedly connected with the top surface of the dosing tank (25).

4. The municipal sewage treatment apparatus according to claim 1, wherein a control panel (5) is provided on the outer surface of the denitrification tank (1), and the output end of the control panel (5) is electrically connected to the first motor (3), the first water pump (11), the second motor (15), the second water pump (23) and the aeration pump (29), respectively.

5. The municipal sewage treatment apparatus according to claim 1, wherein a water gauge (24) is fixedly mounted inside the dosing tank (25).

6. The municipal sewage treatment apparatus according to claim 1, wherein the denitrification carrier disc (8) and the dephosphorization carrier disc (19) have the same structure, and both sides of the denitrification carrier disc (8) and the dephosphorization carrier disc (19) are provided with an outlet end pipe (35) and an inlet end pipe (37), and the port openings of the outlet end pipe (35) and the inlet end pipe (37) are both connected with a screw cap (36) by screw threads.

7. The municipal sewage treatment apparatus according to claim 2, wherein the surface of the gas-guide pipe (26) is connected to a plurality of side pipes (27), and the plurality of side pipes (27) are arranged on the surface of the gas-guide pipe (26) in groups of two by two at equal distances.

8. The municipal sewage treatment equipment according to claim 1, wherein the first water inlet (2) is opened on the upper surface of the denitrification tank (1), the first slag discharge port (6) is opened below the first water inlet (2), the first exhaust port (4) is opened on the edge of the top surface of the denitrification tank (1), and the manual valves are installed on the surfaces of the first water inlet (2), the first exhaust port (4), the first slag discharge port (6) and the first water outlet (9).

9. The municipal sewage treatment equipment according to claim 2, wherein a second slag discharge port (18) is opened on the lower surface of the phosphorus removal tank (14), manual valves are installed on the surfaces of the second slag discharge port (18) and the second communicating pipe (22), and a check valve is installed on the surface of the air-entraining pipe (17).