CN115043492A - Sewage denitrification device and method thereof - Google Patents
Sewage denitrification device and method thereof Download PDFInfo
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- CN115043492A CN115043492A CN202210729645.3A CN202210729645A CN115043492A CN 115043492 A CN115043492 A CN 115043492A CN 202210729645 A CN202210729645 A CN 202210729645A CN 115043492 A CN115043492 A CN 115043492A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to the technical field of sewage control, in particular to a sewage denitrification device and a method thereof, wherein the sewage denitrification device comprises the following steps: the biological rotating disc area, the nitrification reaction area, the first flow pipeline, the second flow pipeline and the denitrification reaction tank; the invention can carry out two times of organic matter degradation, nitration reaction and denitrification on the sewage, thereby improving the denitrification effect of the sewage, wherein the initial flow velocity of the sewage when the sewage is downward provides kinetic energy for the waterwheel I and the waterwheel II, the two sewage streams (heavy sewage and light sewage) simultaneously act on the waterwheel I and the waterwheel II in the biological rotating disc area and the nitration reaction area, thereby further improving the rotating speed of the biological rotating disc and the nitration rotating disc, the potential energy of the three sewage streams and the two sewage streams is partially converted into the kinetic energy of the waterwheel I and the waterwheel II, thereby the flow velocity of the two sewage streams is slowed down when the organic matter degradation and nitration are carried out on the sewage, and the organic matter degradation and nitration effects of the sewage are improved.
Description
Technical Field
The invention relates to the technical field of sewage control, in particular to a sewage denitrification device and a method thereof.
Background
The biological rotating disk is a biological sewage treatment technology by a biological membrane method, the biological membrane can periodically alternate between air and sewage without aeration, and the biological rotating disk has the characteristics of high microbial concentration, strong impact load resistance, good nitrification function, small sludge production amount and the like.
In the prior art, the driving waterwheel and the turntable are adopted for function division, but the problems that the waterwheel and the turntable are connected due to uneven transmission of a rotating shaft, the sewage treatment effect of the waterwheel and the turntable is poor due to uneven sewage flow and the like exist, and the sewage treatment efficiency is influenced.
In the prior art, the driving waterwheel and the rotating disc are functionally partitioned, and the waterwheel is driven by adopting a sewage diversion mode, so that the contradiction between the rotating performance of the waterwheel and the treatment efficiency of the biological rotating disc exists, namely the ideal state is that the rotating speed of the biological rotating disc needs to be high (under the rotating speed that the biological rotating disc cannot be decomposed), and the flow rate of sewage needs to be low, so that the biodegradation effect of sewage can be improved.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a sewage denitrification apparatus and method for increasing the rotational speeds of a waterwheel-driving bio-disc and a nitrification drum by dividing the functions of sewage, wherein the above object is achieved by the following means:
a sewage denitrification apparatus comprising: the biological rotating disc area, the nitrification reaction area, the first flow pipeline, the second flow pipeline and the denitrification reaction tank;
the biological carousel district quantity is two, two relative setting from top to bottom in the biological carousel district, the biological carousel district includes: the biological rotating disc comprises a first shell, a first rotating shaft, a first partition plate, a second partition plate, a biological rotating disc and a first waterwheel, wherein the first shell divides the biological rotating disc into a first space, a second space and a third space through the first partition plate and the second partition plate, a water inlet is formed in the first space, the first rotating shaft is arranged in the first shell, and the first biological rotating disc and the two first waterwheels are arranged on the first rotating shaft;
the nitration reaction zone, two the nitration reaction zone sets up relatively from top to bottom, the nitration reaction zone includes: the inner part of the shell II is divided into a fourth space, a fifth space and a sixth space by the partition plate III and the partition plate IV, wherein the fourth space is communicated with the sixth space by a communication pipeline, the rotating shaft II is arranged in the shell II, the wall surface of the nitrification rotating cylinder is made of grids, light organic matters are placed in the nitrification rotating cylinder, the nitrification rotating cylinder and the two waterwheel II are arranged on the rotating shaft II, and the two nitrification reaction areas are positioned on one side of the biological rotating disc area and are staggered up and down;
the denitrification reactor is characterized in that denitrification fillers are arranged in the denitrification reactor, a drainage pipeline is arranged on one side of the denitrification reactor, a partition plate is arranged in the denitrification reactor, and the denitrification reactor is divided into a denitrification area I and a denitrification area II through the partition plate;
the first flow pipeline comprises: the first flow pipeline is used for connecting the two biological rotating disc areas, the two nitrification reaction areas and the second space, the first space, the sixth space, the fourth space, the third space, the fifth space and the first denitrification area of the denitrification reaction tank;
the second flow line includes: the device comprises a first pipe, a second pipe, a third pipe, a fourth pipe and a fifth pipe, wherein the flow pipeline is used for connecting the two biological rotating disc areas, the two nitrification reaction areas, the denitrification area of the denitrification reaction tank, the first space, the third space, the fifth space, the second space, the first space, the sixth space, the fourth space and the denitrification area of the denitrification reaction tank, and the first pipe is provided with a water pump.
Preferably, the bottom surface of the denitrification reaction tank is provided with two sewage pipes, and the two sewage pipes respectively correspond to the denitrification region I1 and the denitrification region II.
Preferably, the first pipeline is positioned above the first biological rotating disk area, one end of the first pipeline is communicated with a sewage tank, the other end of the first pipeline is naturally and transitionally connected with the top surface of the second space of the first biological rotating disk area, a three-way valve is arranged on the first pipeline, the three-way valve is also connected with a connecting pipeline, one end of the second pipeline is connected with the bottom surface of the first biological rotating disk area, the other end of the second pipeline is naturally and transitionally connected with the top surface of the sixth space of the first nitrification reaction area, one end of the third pipeline is connected with the bottom surface of the fourth space of the first nitrification reaction area, the other end of the third pipeline is naturally and transitionally connected with the top surface of the third space of the second biological loading disk area, one end of the fourth pipeline is connected with the bottom surface of the third space of the second biological loading disk area, the other end of the fifth pipeline is connected with the bottom surface of the fifth space of the second nitrification reaction area, and the other end of the first denitrification area of the denitrification reaction tank is connected with the lower end of the denitrification area, namely, the communication position of the other end of the five pipeline and the denitrification reaction tank is positioned below the denitrification filler. Preferably, one end of the pipe is connected with the upper end of the first denitrification area, namely, the communication part of one end of the pipe and the denitrification reaction tank is positioned above the denitrification filler, the pipe is used for conveying sewage subjected to primary denitrification, a water pump is arranged on the pipe, the other end of the pipe extends upwards and then is connected with the top surface of the third space of the first biological rotating disc area in a natural transition and downward manner, the connecting pipeline is connected with the pipe I, one end of the pipe II is connected with the bottom surface of the third space of the first biological rotating disc area, the other end of the pipe II is connected with the top surface of the fifth space of the first nitrification reaction area in a natural transition and downward manner, one end of the pipe III is connected with the bottom surface of the fifth space of the first biological rotating disc area, the other end of the pipe IV is connected with the top surface of the second space of the biological installing disc area in a natural transition and downward manner, and the other end of the pipe IV is connected with the top surface of the sixth space of the nitrification reaction area, one end of the fifth pipe is connected with the bottom surface of the fourth space of the second nitrification reaction zone, and the other end of the fifth pipe is downwards connected with the lower end of the second denitrification zone of the denitrification reaction tank.
Preferably, a three-way valve is arranged on the first pipeline, a connecting pipeline is further arranged on the three-way valve, and the first connecting pipeline is connected with the first pipe.
Preferably, the downward natural transition positions of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline and the first pipe, the second pipe, the third pipe and the fourth pipe are provided with vertically downward air inlet pipes.
The invention has the beneficial effects that:
the invention can carry out two times of organic matter degradation, nitration reaction and denitrification denitrogenation on the sewage, thereby improving the denitrogenation effect of the sewage, wherein, the initial flow velocity of the downward sewage provides kinetic energy for the waterwheel I and the waterwheel II, the two sewage streams (heavy sewage and light sewage) simultaneously act on the waterwheel I and the waterwheel II in the biological rotating disk area and the nitration reaction area, thereby further improving the rotating speed of the biological rotating disk and the nitration rotating disk, the potential energy of the three sewage streams and the two sewage streams is partially converted into the kinetic energy of the waterwheel I and the waterwheel II, thereby the flow velocity of the two sewage streams is reduced when the organic matter degradation and nitration are carried out, so as to improve the organic matter degradation and nitration effects of the sewage, and the mode is an ideal state, namely, the rotating speed of the biological rotating disk and the nitration rotating disk is high, and the flow velocity of the sewage is low.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the structure of the bio-disc region according to the present invention.
FIG. 3 is a schematic diagram of the structure of the nitration reaction zone of the present invention.
FIG. 4 is a schematic side view of the present invention.
Fig. 5 is a front view of the present invention.
FIG. 6 is a schematic view of the connection between the first flow line and the second flow line according to the present invention.
FIG. 7 is a schematic view of a first flow line and a second flow line partially connected according to the present invention.
FIG. 8 is a schematic view of a second partial connection between a first flow line and a second flow line according to the present invention.
FIG. 9 is a third schematic view of a partial connection between a first flow line and a second flow line according to the present invention.
FIG. 10 is a schematic view showing the flow of a first flow channel in the biological transfer plate region and the nitrification reaction region according to the present invention.
FIG. 11 is a schematic view showing the flow of the second flow channel of the present invention between the biological rotating disk region and the nitrification reaction region.
FIG. 12 is a schematic diagram of the flow of the primary sewage and the secondary sewage in the biological rotating disk area and the nitrification reaction area.
FIG. 13 is a schematic view of the oxygenation of wastewater according to the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are easily implemented by those having ordinary skill in the art to which the present invention pertains, however, the present invention may be implemented in various forms, and thus, the present invention is not limited to the embodiments described below, and in addition, components not connected to the present invention will be omitted from the drawings for more clear description of the present invention.
As shown in fig. 1, a sewage denitrification apparatus includes: the biological rotating disc comprises a biological rotating disc area 1, a nitration reaction area 2, a first flow pipeline 3, a second flow pipeline 4 and a denitrification reaction tank 5;
the biological rotating disk area 1 and the nitrification reaction area 2 are respectively positioned above the denitrification reaction tank 5, the biological rotating disk area 11 is used for degrading organic matters in the sewage, the nitrification reaction area 2 is used for nitrifying the sewage in an aerobic environment, and the denitrification reaction tank 5 is used for denitrifying the sewage in an anaerobic environment;
the number of the biological transfer plate areas 1 is two, the two biological transfer plate areas 1 are arranged up and down oppositely, as shown in fig. 2, the biological transfer plate areas 1 comprise: the biological rotating disc comprises a first shell 11, a first rotating shaft 12, a first partition plate 13, a second partition plate 14, biological rotating discs 15 and a first waterwheel 16, wherein the first shell 11 is rectangular, the first shell 11 divides a biological rotating disc area 1 into a first space 111, a second space 112 and a third space 113 through the first partition plate 13 and the second partition plate 14, the first space 111 is communicated with the second space 112 through a water inlet 131 formed in the first partition plate 13, the second space 112 and the third space 113 are the same in volume, the first shell 11 is provided with an air inlet on the top surface of the first space 111, the first rotating shaft 12 is arranged in the first shell 11 and penetrates through the first partition plate 13 and the second partition plate 14, the biological rotating discs 15 are arranged in the first space 111, namely, a plurality of single-axis biological rotating discs are adopted, the number of the first waterwheel 16 is two, the two first waterwheels 16 are arranged on the first rotating shaft 12 and are arranged in the second space 112 and the third space 113, namely, the two waterwheel I16 are coaxial with the biological rotating disk 15, and the two waterwheel I16 are driven by sewage to drive the biological rotating disk 15 to rotate;
the two nitrification reaction zones 2 are arranged opposite to each other up and down, as shown in fig. 3, the nitrification reaction zone 2 includes: a second shell 21, a second rotating shaft 22, a third partition 23, a fourth partition 24, a nitrification rotating cylinder 25 and a second waterwheel 26, wherein the second shell 21 and the first shell 11 have the same structure, the second shell 21 is internally divided into a fourth space 211, a fifth space 212 and a sixth space 213 by the third partition 23 and the fourth partition 24, the fourth space 211 is communicated with the sixth space 213 through a communication pipeline 214, the second rotating shaft 22 is arranged in the second shell 21 and penetrates through the third partition 23 and the fourth partition 24, the nitrification rotating cylinder 25 is positioned in the fourth space 211 and is connected with the second rotating shaft 22, the wall surface of the nitrification rotating cylinder 25 is made of grids, light organic matters are placed in the nitrification rotating cylinder 25 and carry out nitrification reaction on sewage through the light organic matters, the number of the second waterwheels 16 is two, the two first waterwheels 16 are arranged on the second rotating shaft 22 and are positioned in the second object space 212, In the sixth space 213;
as shown in fig. 4-5, the two biological rotating disk regions 1 are a biological rotating disk region one 1-1 and a biological loading disk region two 1-2, the two nitrification reaction regions 2 are a nitrification reaction region one 2-1 and a nitrification reaction region two 2-2, and the two biological rotating disk regions 1 and the two nitrification reaction regions 2 are specifically arranged in such a manner that the biological rotating disk region one 1-1 is located above one side of the nitrification reaction region one 2-1, and the biological loading disk region two 1-2 is located above one side of the nitrification reaction region two 2-2 and below one side of the nitrification reaction region one 2-1;
the denitrification reactor 5 is provided with denitrification fillers 51 in the denitrification reactor 5, a drainage pipeline 52 is arranged on one side of the denitrification reactor 5, two drainage pipelines 53 are arranged on the bottom surface of the denitrification reactor 5, a partition plate 54 is arranged in the denitrification reactor 5, the denitrification reactor 5 is divided into a denitrification area I5-1 and a denitrification area II 5-2 through the partition plate 54, the two drainage pipelines 53 respectively correspond to the denitrification area I5-1 and the denitrification area II 5-2, and drainage is performed through the two drainage pipelines 53 respectively corresponding to the denitrification area I5-1 and the denitrification area II 5-2;
as shown in fig. 5 to 9, the first flow line 3 performs a first degradation of organic substances, a nitrification reaction, and a denitrification for sewage, and the first flow line 3 includes: a first pipeline 31, a second pipeline 32, a third pipeline 33, a fourth pipeline 34 and a fifth pipeline 35, wherein the first pipeline 31 is positioned above the first biological rotating disk area 1-1, one end of the first pipeline 31 is communicated with the sewage tank, the other end of the first pipeline 31 is naturally and transitionally connected with the top surface of the second space 112 of the first biological rotating disk area 1-1 downwards, a three-way valve 311 is arranged on the first pipeline 31, the three-way valve 311 is also connected with a connecting pipeline 312, one end of the second pipeline 32 is connected with the bottom surface of the first space 111 of the first biological rotating disk area 1-1, the other end of the second pipeline is naturally and transitionally connected with the top surface of the sixth space 213 of the first nitrification reaction area 2-1 downwards, one end of the third pipeline 33 is connected with the bottom surface of the fourth space 211 of the first nitrification reaction area 2-1, the other end of the second pipeline is naturally and transitionally connected with the top surface of the third space 113 of the second biological loading disk area 1-2 downwards, the other end of the pipeline five 35 is naturally and transitionally connected with the top surface of the fifth space 212 of the nitration reaction zone two 2-2 downwards, one end of the pipeline five 35 is connected with the bottom surface of the fifth space 212 of the nitration reaction zone two 2-2, the other end of the pipeline five is connected with the lower end of the denitrification zone one 5-1 of the denitrification reaction tank 5, namely, the communication position of the other end of the pipeline five 35 and the denitrification reaction tank 5 is positioned below the denitrification filler 51;
the second flow pipeline 4 carries out organic matter degradation, nitration reaction, denitrification nitrogen removal of sewage for the second time, the second flow pipeline 4 includes: one end of the first pipe 41 is connected with the upper end of the denitrification area I5-1, namely, the communication part of one end of the first pipe 41 and the denitrification reaction tank 5 is positioned above the denitrification filler 51, the first pipe 41 is used for conveying sewage subjected to primary denitrification, a water pump 411 is arranged on the first pipe 41, the other end of the first pipe 41 extends upwards and then is naturally transited downwards to be connected with the top surface of the third space 113 of the biological rotating disc area I1-1, the connecting pipeline 312 is connected with the first pipe 41, one end of the second pipe 42 is connected with the bottom surface of the third space 113 of the biological rotating disc area I1-1, the other end of the second pipe is naturally transited downwards to be connected with the top surface of the fifth space 212 of the nitrification reaction area I2-1, one end of the third pipe 43 is connected with the bottom surface of the fifth space 212 of the nitrification reaction area I2-1, and the other end of the third pipe is naturally transited downwards to be connected with the top surface of the second space 112 of the biological rotating disc area II 1-2, one end of the fourth pipe 44 is connected with the bottom surface of the first space 111 of the biological containing disc area II 1-2, the other end of the fourth pipe is naturally transited and downwards connected with the top surface of the sixth space 213 of the nitrification reaction area II 2-2, one end of the fifth pipe 45 is connected with the bottom surface of the fourth space 211 of the nitrification reaction area II 2-2, and the other end of the fifth pipe is downwards connected with the lower end of the denitrification area II 5-2 of the denitrification reaction tank 5;
the water outlet ends of the first pipeline 31, the second pipeline 32, the third pipeline 33, the fourth pipeline 34, the first pipe 41, the second pipe 42, the third pipe 43 and the fourth pipe 44 respectively correspond to a first biological rotating disc area 1-1, a second space 112 of a second biological containing disc area 1-2, a third space 113, a first nitrification reaction area 2-1, a fifth nitrification reaction area 212 and a sixth space 213, and the purpose is that two water flows can simultaneously drive a first waterwheel 16 and a second waterwheel 26 in the biological rotating disc area 1, the nitrification reaction area 2 to rotate, so that the biological rotating disc 15 and the nitrification rotating disc 25 in the biological rotating disc area 1 and the nitrification reaction area 2 are driven to stably rotate;
and air inlet pipelines are respectively arranged at the natural transition downward bending positions of the first pipeline 31, the second pipeline 32, the third pipeline 33, the fourth pipeline 34, the first pipe 41, the second pipe 42, the third pipe 43 and the fourth pipe 44 and are vertically arranged, the air inlet pipelines are used for pressurizing the first flow pipeline 3 and the second flow pipeline 4 on one hand to improve the flow speed of the sewage so as to further improve the rotating speed of the first waterwheel 16 and the second waterwheel 26 on the other hand to oxygenate the nitrification reaction zone I2-1 and the nitrification reaction zone II 2-2 so that the nitrification rotary drum 25 can carry out nitrification reaction on the sewage in an aerobic environment.
Preferably, as an implementation mode, as shown in fig. 13, a vertical downward air inlet pipe is arranged at a downward natural transition of the first pipe 31, the second pipe 32, the third pipe 33, the fourth pipe 34 and the first pipe 41, the second pipe 42, the third pipe 43, and the fourth pipe 44, when the sewage is downward, the air inlet pipe sucks in external air through negative pressure, on one hand, the flow rate of the sewage in the first flow pipeline 3 and the second flow pipeline 4 is increased through air pressurization, on the other hand, the sewage is oxygenated, and the nitrification of the sewage is facilitated.
The invention also provides a method of the sewage denitrification device, which comprises the following steps:
s1: as shown in fig. 10-12, heavy sewage flows along the first flow pipe 3, the heavy sewage firstly enters the second space 112 of the first biological rotating disc region 1-1 through the first pipe 31, the heavy sewage drives the first waterwheel 16 to rotate, the biological rotating disc 15 is indirectly driven to rotate, the heavy sewage enters the first space 111 along the water inlet 131, the biological rotating disc 15 carries out organic matter degradation on the heavy sewage in the first space 111, when the heavy sewage enters the first space 111 from the second space 112, the potential energy of the heavy sewage is partially converted into the kinetic energy of the first waterwheel 16, the flow rate of the heavy sewage is reduced, the heavy sewage enters the sixth space 213 in the first nitrification reaction region 2-1 along the second pipe 32, the heavy sewage drives the second waterwheel 26 in the sixth space 213, the nitrification rotating drum 25 is indirectly driven to rotate, the heavy sewage enters the fourth space 211 along the communication pipe 241, the nitrification rotary drum 25 performs nitrification reaction on the heavy sewage,
s2: the heavy sewage sequentially enters a third space 113 of a biological loading panel II 1-2 and a fifth space 212 of a nitrification reaction zone II 2-2 through a pipeline III 33 and a pipeline IV 34, finally the heavy sewage enters a denitrification zone I5-1 along a pipeline V35, methanol is added to provide carbon and oxygen substances, the heavy sewage is subjected to denitrification through a denitrification filler 51 to complete primary denitrification, namely the heavy sewage provides power for the heavy sewage when passing through a biological rotating panel I1-1 and a nitrification reaction zone I2-1, meanwhile, the biological rotating disc 15 and the nitrification rotating disc 25 perform organic matter degradation and nitrification reaction on the heavy sewage, and the heavy sewage provides power for the heavy sewage when passing through the biological loading panel II 1-2 and the nitrification reaction zone II 2-2;
s3: as shown in fig. 11-12, the light wastewater flows along the second flow pipeline 4, the first pipe 41 pumps the light wastewater in the first nitrification area 5-1 through the water pump 411, and the light wastewater enters the second space 112 of the first biological rotating disk area 1-1 and the fifth space 212 of the first nitrification reaction area 2-1 along the first pipe 41 and the second pipe 42 to power the biological rotating disk 15 and the nitrification rotating disk 25 therein;
s4: the mild sewage enters the second space 112 of the first biological rotating disc area 1-2 along the third pipe 43, the mild sewage drives the first waterwheel 16 to rotate, the biological rotating disc 15 is indirectly driven to rotate, the mild sewage enters the first space 111 along the water inlet 131, the biological rotating disc 15 carries out organic matter degradation on the mild sewage in the first space 111, the mild sewage enters the sixth space 213 in the second nitrification reaction area 2-2 along the fourth pipe 44, the mild sewage drives the second waterwheel 26 in the sixth space 213, the nitrification rotating drum 25 is indirectly driven to rotate, the mild sewage enters the fourth space 211 along the communicating pipeline 241, the nitrification rotating drum 25 carries out nitrification reaction on the sewage, namely the mild sewage provides power for the mild sewage when passing through the first biological rotating disc area 1-1 and the first nitrification reaction area 2-1, and the mild sewage provides power for the mild sewage when passing through the second biological loading disc area 1-2 and the second nitrification reaction area 2-2, meanwhile, the biological rotating disc 15 and the nitrification revolving drum 25 carry out organic matter degradation and nitrification reaction on the mild sewage, so that the two water flows (the severe sewage and the mild sewage) simultaneously drive the two waterwheel one 16 and the two waterwheel two 26 of the second space 112, the third space 113, the fifth space 212 and the sixth space 213 to rotate, the rotating speed of the biological rotating disc 15 and the nitrification revolving drum 25 is increased, namely the rotating speed of the biological rotating disc 15 and the nitrification revolving drum 25 is high, and the flow speed of the two water flows is low (part of potential energy is converted into kinetic energy), in such a way, the biological rotating disc 15 and the nitrification revolving drum 25 carry out ideal states of organic matter degradation and nitrification on the two water flows, the mild sewage flows into the denitrification area two 5-2 along the pipe five 45, methanol is added to provide carbon and oxygen substances, the denitrification reaction is carried out on the sewage, the denitrification filler 51 carries out secondary denitrification on the mild sewage, and finally the clean water is discharged into the aeration tank along the drainage pipe 52, removing redundant nitrogen source to realize standard discharge of water;
s5: when needs are to two biological commentaries on classics board district 1 and two when nitration area 2 washs, the conversion water route, through three-way valve 311 promptly, let pipe 41 be linked together with pipeline 31, water pump 411 starts, in corresponding denitrification area 5-1, slight sewage of denitrification filler 51 top extraction, because slight sewage upwards passes through denitrification filler 51, and silt density is greater than water, thereby silt can deposit in denitrification area 5-1's below, slight sewage is two along flow pipeline one 3, flow pipeline two 4 biological commentaries on classics board district 1 and two nitration area 2 flows, in order to two biological commentaries on classics board district 1 and two silt in nitration area 2 washes, and slight sewage after the washing refluences and flows into denitrification tank 5.
Claims (8)
1. A sewage denitrification apparatus comprising: the biological reaction system comprises a biological rotating disc area (1), a nitrification reaction area (2), a first flow pipeline (3), a second flow pipeline (4) and a denitrification reaction tank (5); the method is characterized in that: the biological carousel district (1) quantity is two, two relative setting about biological carousel district (1), biological carousel district (1) includes: the biological rotating disc comprises a first shell (11), a first rotating shaft (12), a first partition plate (13), a second partition plate (14), a biological rotating disc (15) and a first waterwheel (16), wherein the first shell (11) divides a biological rotating disc area (1) into a first space (111), a second space (112) and a third space (113) through the first partition plate (13) and the second partition plate (14), a water inlet (131) is formed in the first space (111), the first rotating shaft (12) is arranged in the first shell (11), and the two first waterwheels (16) are arranged on the first rotating shaft (12) of the biological rotating disc (15);
the nitration reaction zone (2) comprises: the biological water-saving device comprises a second shell (21), a second rotating shaft (22), a third partition plate (23), a fourth partition plate (24), a nitrification rotating cylinder (25) and a second waterwheel (26), wherein the inside of the second shell (21) is divided into a fourth space (211), a fifth space (212) and a sixth space (213) through the third partition plate (23) and the fourth partition plate (24) in the second shell (21), the fourth space (211) is communicated with the sixth space (213) through a communication pipeline (214), the second rotating shaft (22) is arranged in the second shell (21), the nitrification rotating cylinder (25) and the two second waterwheels (26) are arranged on the second rotating shaft (22), and the two nitrification reaction areas (2) are positioned on one side of the biological water-saving disc area (1) and are staggered up and down;
a partition plate (54) is arranged in the denitrification reaction tank (5), and the denitrification reaction tank (5) is divided into a denitrification area I (5-1) and a denitrification area II (5-2) through the partition plate (54);
the first flow line (3) comprises: the first flow pipeline (3) is used for connecting the two biological rotating disc regions (1), the two nitrification reaction regions (2), a second space (112) of a denitrification reaction tank (5), a first space (111), a sixth space (213), a fourth space (211), a third space (113), a fifth space (212) and a denitrification region I (5-1);
the second flow line (4) comprises: pipe one (41), pipe two (42), pipe three (43), pipe four (44), pipe five (45), flow line two (4) are used for connecting two biological carousel district (1), two the denitrification district one (5-1), third space (113), fifth space (212), second space (112), first space (111), sixth space (213), fourth space (211), denitrification district two (5-2) of nitration reaction district (2), denitrification district (5), pipe one (41) are provided with water pump (411).
2. The denitrification facility for wastewater according to claim 1, wherein: the bottom surface of denitrification retort (5) is provided with two sewage pipes (53), two sewage pipes (53) correspond denitrification region one (5-1) and denitrification region two (5-2) respectively, denitrification retort (5) one side sets up drainage pipe (52), denitrification retort (5), be provided with denitrification filler (51) in denitrification retort (5).
3. The denitrification facility for wastewater according to claim 1, wherein: the first pipeline (31) is positioned above the first biological rotating disc area (1-1), one end of the first pipeline (31) is communicated with a sewage tank, the other end of the first pipeline is naturally and transitionally connected with the top surface of the second space (112) of the first biological rotating disc area (1-1) downwards, a three-way valve (311) is arranged on the first pipeline (31), a connecting pipeline (312) is further connected onto the three-way valve (311), one end of the second pipeline (32) is connected with the bottom surface of the first space (111) of the first biological rotating disc area (1-1), the other end of the second pipeline is naturally and transitionally connected with the top surface of the sixth space (213) of the first nitrification reaction area (2-1) downwards, one end of the third pipeline (33) is connected with the bottom surface of the fourth space (211) of the first nitrification reaction area (2-1), and the other end of the third pipeline is naturally and transitionally connected with the top surface of the third space (113) of the second biological loading disc area (1-2) downwards, one end of the fourth pipeline (34) is connected with the bottom surface of the third space (113) of the biological containing plate area II (1-2), the other end of the fourth pipeline is naturally transited and downwards connected with the top surface of the fifth space (212) of the nitrification reaction area II (2-2), one end of the fifth pipeline (35) is connected with the bottom surface of the fifth space (212) of the nitrification reaction area II (2-2), the other end of the fifth pipeline is connected with the lower end of the denitrification area I (5-1) of the denitrification reaction tank (5), namely, the communication position of the other end of the fifth pipeline (35) and the denitrification reaction tank (5) is positioned below the denitrification filler (51).
4. The denitrification facility for wastewater according to claim 1, wherein: one end of the first pipe (41) is connected with the upper end of the first denitrification area (5-1), namely, the communication part of one end of the first pipe (41) and the denitrification reaction tank (5) is positioned above the denitrification filler (51), the first pipe (41) is used for conveying sewage subjected to primary denitrification, a water pump (411) is arranged on the first pipe (41), the other end of the first pipe (41) extends upwards and then naturally transits downwards to be connected with the top surface of the third space (113) of the first biological rotating disc area (1-1), the connecting pipeline (312) is connected with the first pipe (41), one end of the second pipe (42) is connected with the bottom surface of the third space (113) of the first biological rotating disc area (1-1), the other end naturally transits downwards to be connected with the top surface of the fifth space (212) of the first nitrification reaction area (2-1), one end of the third pipe (43) is connected with the bottom surface of the fifth space (212) of the first nitrification reaction area (2-1), the other end of the pipe is naturally and transitionally connected with the top surface of a second space (112) of the biological loading plate area II (1-2) downwards, one end of a pipe IV (44) is connected with the bottom surface of a first space (111) of the biological loading plate area II (1-2), the other end of the pipe IV is naturally and transitionally connected with the top surface of a sixth space (213) of the nitrification reaction area II (2-2) downwards, one end of a pipe V (45) is connected with the bottom surface of a fourth space (211) of the nitrification reaction area II (2-2), and the other end of the pipe V is downwards connected with the lower end of a denitrification area II (5-2) of the denitrification reaction tank (5).
5. The denitrification facility for wastewater according to claim 1, wherein: the pipeline I (31) is provided with a three-way valve (311), the three-way valve (311) is further provided with a connecting pipeline (312), and the connecting pipeline (312) is connected with the pipeline I (41).
6. The denitrification facility for wastewater according to claim 1, wherein: and vertical downward air inlet pipes are arranged at downward natural transition positions of the first pipeline (31), the second pipeline (32), the third pipeline (33), the fourth pipeline (34), the first pipe (41), the second pipe (42), the third pipe (43) and the fourth pipe (44).
7. The denitrification facility for wastewater according to claim 1, wherein: the wall surface of the nitrification rotating cylinder (25) is made of meshes, and light organic matters are placed in the nitrification rotating cylinder (25).
8. The denitrification facility for wastewater according to claim 1, wherein: a method of a sewage denitrification device comprises the following specific steps:
s1: the method comprises the following steps that heavy sewage firstly enters a second space (112) of a biological rotating disc area I (1-1) through a pipeline I (31), the heavy sewage drives a waterwheel I (16) to rotate, a biological rotating disc (15) is indirectly driven to rotate, the heavy sewage enters a first space (111) along a water inlet (131), the biological rotating disc (15) carries out organic matter degradation on the heavy sewage in the first space (111), the heavy sewage enters a sixth space (213) in a nitrification reaction area I (2-1) along a pipeline II (32), the heavy sewage drives a waterwheel II (26) in the sixth space (213), a nitrification rotating drum (25) is indirectly driven to rotate, the heavy sewage enters a fourth space (211) along a communicating pipeline (241), and the nitrification reaction is carried out on the heavy sewage by the nitrification rotating drum (25);
s2: the heavy sewage sequentially enters a third space (113) of the biological containing area II (1-2) and a fifth space (212) of the nitrification reaction area II (2-2) through a pipeline III (33) and a pipeline IV (34), finally the heavy sewage enters a denitrification area I (5-1) along a pipeline V (35), methanol is added to provide carbon-oxygen substances, and the sewage is subjected to primary denitrification reaction;
s3: the mild sewage flows along the flow pipeline II (4), the pipe I (41) pumps the mild sewage in the nitrification area I (5-1) through a water pump (411), and the mild sewage enters the second space (112) of the biological rotating disc area I (1-1) and the fifth space (212) of the nitrification reaction area I (2-1) along the pipe I (41) and the pipe II (42) to provide power for the biological rotating disc (15) and the nitrification rotating disc (25) in the biological rotating disc area I;
s4: the mild sewage enters a second space (112) of the biological rotating disc area I (1-2) along a pipe III (43), the mild sewage drives a waterwheel I (16) to rotate, the biological rotating disc (15) is indirectly driven to rotate, the mild sewage enters a first space (111) along a water inlet (131), the biological rotating disc (15) carries out organic matter degradation on the mild sewage in the first space (111), the mild sewage enters a sixth space (213) in a nitration reaction area II (2-2) along a pipe IV (44), the mild sewage drives the waterwheel II (26) in the sixth space (213), the nitration rotating drum (25) is indirectly driven to rotate, the mild sewage enters the fourth space (211) along a communicating pipe (241), the nitration rotating drum (25) carries out nitration reaction on the sewage, the mild sewage flows into the nitration reaction area II (2-2) along a pipe V (45), and methanol is added to provide carbon-oxygen substances, carrying out secondary denitrification reaction on the sewage;
s5: when needs are to two biological commentaries on classics board district (1) and two when nitration district (2) wash, the conversion water route, through three-way valve (311) promptly, let pipe one (41) be linked together with pipeline one (31), water pump (411) start, in responding denitrification district one (5-1), light sewage of denitrification filler (51) top extraction, light sewage is two along flow line one (3), flow line two (4) biological commentaries on classics board district (1) and two nitration district (2) flow, in order to two biological commentaries on classics board district (1) and two silt in nitration district (2) is washed, and light sewage after the washing refluences and flows into denitrification tank (5).
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