CN113912188A - Low-energy-consumption sewage deep denitrification system - Google Patents
Low-energy-consumption sewage deep denitrification system Download PDFInfo
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- CN113912188A CN113912188A CN202111381399.9A CN202111381399A CN113912188A CN 113912188 A CN113912188 A CN 113912188A CN 202111381399 A CN202111381399 A CN 202111381399A CN 113912188 A CN113912188 A CN 113912188A
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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
- 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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Abstract
The invention belongs to the technical field of sewage treatment, in particular to a low-energy-consumption sewage deep denitrification system, which comprises a reaction device, a water inlet device, a water outlet device and an air pump, and also comprises a biomembrane module for inhabitation, growth and propagation of microorganisms, an aeration module consisting of an aeration head, an aeration pipe and a regulating unit, and a control module, wherein the angle of the aeration head is regulated in all directions by the regulating unit, so that the solubility in the reaction device is changed in a subarea manner, an obvious solubility gradient exists, an aerobic area appears in a certain area aerated by the aeration head, and an anoxic area appears in a certain area not aerated by the aeration head, so that the environment suitable for the action of nitrobacteria and denitrifying bacteria appears in the reaction device, namely, the dynamic stability of the dissolved oxygen content in synchronous nitrification and denitrification is achieved, and the deep denitrification treatment of sewage is realized, and reduces the cost investment and the secondary pollution.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a low-energy-consumption sewage deep denitrification system.
Background
Nitrogen is an important pollution factor causing water eutrophication and environmental pollution; for example, the water pollution of Yunnan, Jiangsu Taihu lake, Anhui nest lake and the like is caused by nitrogen compounds to cause eutrophication of water and is getting worse; more urgent is that the current urban sewage treatment rate of China is only about 5 percent, and most of the urban sewage treatment rate does not have the capability of nitrogen and phosphorus removal;
at present, the traditional biological denitrification technology is generally adopted in China, and the process comprises assimilation reaction, nitration reaction and denitrification reaction; in the assimilation stage, part of ammonia nitrogen in the wastewater is assimilated into new cell substances and removed in the form of waste sludge; in the nitrification stage, nitrifying bacteria convert ammonia nitrogen into nitrate nitrogen (nitrite nitrogen); in the denitrification phase, denitrifying bacteria convert nitrate nitrogen into nitric oxide, nitrous oxide and nitrogen (primarily nitrogen), and then release the nitrogen from the wastewater into the atmosphere; the nitrification and denitrification reactions are respectively completed by the action of nitrifying bacteria and denitrifying bacteria, and because of different requirements on environmental conditions, the two processes can not be simultaneously carried out but can be carried out in a sequential manner, namely, the nitrification reaction is carried out under the aerobic condition, and the denitrification reaction is carried out under the anoxic or anaerobic condition; therefore, most of the developed biological denitrification processes separate an anoxic zone from an aerobic zone to form a staged nitrification and denitrification process, so that nitrification and denitrification can be independently carried out; in 1932 Wuhrmann established postdenitrification (postdenitrification) by endogenous denitrification, and Ludzack and Ettingger proposed the postdenitrification (prereduction) in 1962, and in 1973 Barnard combined with the former two and subsequently with various improvements such as Bardenphos and Phoredox (A)2The process comprises the following steps of/O), UCT, JBH, AAA process and the like, which are typical traditional nitrification and denitrification processes;
the process plays a very important role in the aspect of wastewater denitrification; the preposed denitrification utilizes partial quick and easily degradable organic matters in the wastewater as a carbon source required by denitrification, so that the cost of an additional carbon source in the denitrification stage is saved; the post-denitrification fully ensures the nitrogen content in the effluent, so that the nitrification and denitrification can occur in one container, thereby greatly saving the capital investment;
however, these processes clearly suffer from their own drawbacks; the preposed denitrification can not completely remove nitrogen, the contents of nitrite nitrogen and nitrate nitrogen in effluent can not be ensured, if a higher nitrogen removal rate is to be obtained, the internal circulation ratio must be increased, and thus the energy consumption is correspondingly greatly improved; the post-denitrification depends on the addition of an externally added fast easily-degradable organic carbon source, so that the effluent is secondarily polluted by organic matters, the quality of the effluent organic matters cannot be ensured, the required treatment time is long, and the treatment capacity is low;
in addition, based on the fact that the nitrification process is finished by autotrophic bacteria, heterotrophic bacteria can participate in nitrification, and certain microorganisms can perform denitrification under aerobic conditions, a new theory of nitrogen treatment, namely Synchronous Nitrification and Denitrification (SND), is discovered, and is simple and simple, namely nitrification and denitrification can be performed simultaneously in the same reactor, and the cost is reduced for the biological denitrification technology by the Synchronous Nitrification and Denitrification (SND); however, in the denitrification by Simultaneous Nitrification and Denitrification (SND), the following disadvantages still exist:
because the aerobic and autotrophic properties of the nitrifying bacteria are obviously different from the anoxic and heterotrophic properties of the denitrifying bacteria, the nitrification and denitrification are difficult to unify in time and space, i.e., the increase of dissolved oxygen content (DO concentration) can improve the nitrification reaction rate but can reduce the denitrification rate, and conversely, the decrease of the DO concentration can not only reduce the nitrification reaction rate and the total denitrification rate, but also can cause the accumulation of nitrite; only by keeping a proper DO concentration level, the oxidation, nitrification and denitrification of the carbon-containing organic matters can be realized, and the denitrification effect is improved;
therefore, it is urgently needed to research a deep denitrification system which can maintain the nitrification and denitrification in a stable state and improve the denitrification effect.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problem of how to maintain the nitrification and the denitrification in a stable state, the invention provides a sewage deep denitrification system with low energy consumption.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a sewage degree of depth denitrogenation system of low energy consumption, includes reaction unit, water installations, play water installation and the air pump that is used for sewage denitrification reaction, still includes:
the biological membrane carrier is arranged in the reaction device and is used for inhabitation, growth and propagation of microorganisms;
the aeration module is communicated with the air pump and consists of an aeration head, an aeration pipe and an adjusting unit, the aeration head is connected to the end part of the aeration pipe in a ball joint mode through a ball joint, one group or a plurality of groups of air inlet channels are formed in the ball joint, the adjusting unit comprises one or more of an air cylinder or an electric push rod, one end of the adjusting unit is installed on the outer ring of the aeration pipe, the other end of the adjusting unit is installed at the bottom of the aeration head, and the adjustment of a plurality of angles of the aeration head is realized through the action of the adjusting unit, so that the adjustment of the dissolved oxygen content is realized;
and the control module is used for controlling the operation of the aeration module.
Specifically, the end connection of aeration pipe has the driving source, and the driving source is by one or more in motor or the revolving cylinder, and the driving source is used for driving the aeration pipe and rotates, and the outer cover of aeration pipe establishes the change, and opens between change and the aeration pipe and be equipped with the inlet port that link up, and the inlet port passes through hose and air pump intercommunication.
Specifically, arc-shaped blades are evenly arranged on the outer ring of the aeration head, the arc-shaped blades are bent towards one side close to the aeration head, and the thickness of the middle parts of the arc-shaped blades is gradually reduced towards two sides.
Specifically, the inside of arc blade is provided with air passage one, and the one end of air passage one communicates with the inside of aeration head, and the opening that sets up on the other end and the arc blade communicates, the opening is located the one end that the aeration head was kept away from to the arc blade.
Specifically, the outer wall of the arc-shaped blade positioned at the opening position is provided with a semicircular elastic sheet, one end of the elastic sheet is fixedly connected to the arc-shaped blade, and the other end of the elastic sheet is suspended and covers the opening.
Specifically, an inclined block is arranged on the arc-shaped blade located in the elastic piece, the inclined edge of the inclined block is parallel to the angle of the opening, and a group of grooves are uniformly formed in the inclined edge of the inclined block.
Specifically, be provided with the shutoff board in the inside cavity of aeration head, the shutoff board passes through spacing spring and installs on the inner wall of jet-propelled head, and lies in the downside of air passage one and the inside intercommunication department of jet-propelled head under the shutoff board initial condition, offers the air vent corresponding with the aeration hole on the jet-propelled head on the shutoff board, and installs the chock of evenly seting up a set of chute on the air vent.
Specifically, the end of the plugging plate is provided with a first magnetic block, the arc-shaped blade is sleeved on the outer ring of the air nozzle through a lantern ring in which the air storage cavity is arranged, a second magnetic block is arranged on the lantern ring, the first magnetic block and the second magnetic block are mutually attracted, and an air groove is formed in the air nozzle and is respectively communicated with the interior of the air nozzle and the lantern ring.
Specifically, the end face of the plug block is provided with plug rods, the outer ring of each plug rod is provided with a spiral groove, and each plug rod corresponds to the aeration hole one by one.
The invention has the following beneficial effects:
1. according to the low-energy-consumption sewage deep denitrification system, the aeration module consisting of the aeration head, the aeration pipe and the adjusting unit is arranged, the angle of the aeration head is adjusted in all directions by the adjusting unit, so that the solubility in the reaction device is changed in a partition mode, an obvious solubility gradient exists, an aerobic area appears in a certain area aerated by the aeration head, and an anoxic area appears in a certain area not aerated by the aeration head, so that the environment suitable for the action of nitrobacteria and denitrifying bacteria appears in the reaction device, namely, the dynamic stability of the dissolved oxygen content in synchronous nitrification and denitrification is achieved, the deep denitrification treatment of sewage is realized, and the cost investment and secondary pollution are reduced.
2. According to the low-energy-consumption sewage deep denitrification system, the driving source drives the aeration pipe to rotate, so that the aeration head rotates, when gas is exploded out through the aeration head, a vortex can be formed, large bubbles generated when the gas is exploded out are crushed, more small bubbles are formed, dissolved oxygen is provided for the reaction device more quickly, and therefore the sewage is subjected to denitrification treatment and the denitrification efficiency is improved; meanwhile, the aeration head can transfer horizontal velocity to the sewage in the reaction device in the rotation process, so that the sewage flows in the reaction device in an internal circulation manner, and the denitrification treatment efficiency of the sewage is further improved.
3. According to the low-energy-consumption sewage deep denitrification system, the semicircular elastic sheets and the inclined blocks are arranged, so that gas can act on the elastic sheets along the inclined blocks or directly when being sprayed out from the opening, large bubbles generated during spraying are blocked by the elastic sheets and are compressed, the large bubbles are changed into more small bubbles, meanwhile, the elastic sheets and the inclined blocks form convex parts under the action of sewage, the bubbles can be prevented from overflowing outwards along the arc-shaped blades, dissolved oxygen provided by the bubbles is maintained in the aeration module area, the area without the action of the aeration module is maintained in an anoxic environment, nitrification and denitrification reactions can be simultaneously carried out, and the denitrification treatment effect on the sewage is ensured.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of an aeration module of the present invention;
fig. 3 is a top view of the aeration module of fig. 2;
fig. 4 is a partial cross-sectional view of an aeration module of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 3 at A;
FIG. 6 is a partial enlarged view at B in FIG. 4;
in the figure: the device comprises a reaction device 1, an aeration module 2, an aeration head 21, an aeration pipe 22, an air inlet 221, an adjusting unit 23, an arc-shaped blade 24, a first air channel 241, an opening 242, an elastic sheet 25, an inclined block 26, a groove 261, a blocking plate 3, a limiting spring 31, an air vent 32, a plug block 33, a first magnetic block 34, a lantern ring 35, a second magnetic block 351, an air groove 352, a plug rod 36 and a spiral groove 361.
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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless explicitly defined otherwise as a specific embodiment of the present invention. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, 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.
The first embodiment is as follows:
a sewage deep denitrification system with low energy consumption is shown in the following figures 1-4, and comprises a reaction device 1 for sewage denitrification reaction, a water inlet device, a water outlet device and an air pump, and further comprises:
the biological membrane carrier is arranged in the reaction device and is used for inhabitation, growth and propagation of microorganisms;
the aeration module 2 is communicated with an air pump, the aeration module 2 consists of an aeration head 21, an aeration pipe 22 and an adjusting unit 23, the aeration head 21 is connected to the end part of the aeration pipe 22 in a ball joint mode, one group or a plurality of groups of air inlet channels are formed in the ball joint mode, the adjusting unit 23 comprises one or more of an air cylinder or an electric push rod, one end of the adjusting unit 23 is installed on the outer ring of the aeration pipe 22, the other end of the adjusting unit is installed at the bottom of the aeration head 21, and the adjustment of multiple angles of the aeration head 21 is achieved through the effect of the adjusting unit 23, so that the adjustment of the dissolved oxygen content is achieved;
and the control module is used for controlling the work of the aeration module 2.
In the prior art, a synchronous nitrification and denitrification device is adopted based on the fact that microorganisms can perform denitrification under aerobic conditions, but in the actual denitrification treatment of sewage, the control of the dissolved oxygen content in the synchronous nitrification and denitrification device is not accurate, once the dissolved oxygen content is increased, although the nitrification reaction rate can be improved, the denitrification rate can be reduced, on the contrary, the dissolved oxygen content is reduced, the nitrification reaction rate and the total denitrification rate can be reduced, and nitrite accumulation can occur; therefore, the dissolved oxygen content needs to be kept at a stable level, and the oxidation, nitrification and denitrification of the carbon-containing organic matters are promoted together, so that the denitrification effect on the sewage is improved; according to the invention, by arranging the aeration module 2 consisting of the aeration head 21, the aeration pipe 22 and the adjusting unit 23, the angle of the aeration head 21 is adjusted in all directions by using the adjusting unit 23, so that the solubility in the reaction device 1 is changed in a subarea manner, an obvious solubility gradient exists, an aerobic zone appears in a certain area aerated by the aeration head 21, and an anoxic zone appears in a certain area not aerated by the aeration head 21, and thus the environment adapted to the action of nitrobacteria and denitrifying bacteria appears in the reaction device 1, namely the dynamic stability of the dissolved oxygen content in the synchronous nitrification and denitrification is achieved, the deep denitrification treatment of sewage is realized, and the cost input and the secondary pollution are reduced;
the specific working process is as follows:
firstly, sewage is led into the reaction device 1 through a water inlet device, meanwhile, a position for microorganisms to inhabit and grow is provided by utilizing a biomembrane module, at the moment, the work of the aeration module 2 is controlled by a control module, air pump action is carried out, air is continuously injected into the aeration pipe 22, because the aeration pipe 22 is connected with the aeration head 21 through a ball joint ball, and one or more groups of air inlet channels are arranged on the ball joint, the air in the aeration pipe 22 enters the aeration head 21 through one or more groups of air inlet channels, the reaction device 1 is aerated through the aeration head 21, meanwhile, the aeration head 21 is regulated in all-dimensional angles through a regulating unit 23, the solubility in the reaction device 1 is changed in a subarea mode, obvious solubility gradient exists, an aerobic area appears in a certain area with aeration of the aeration head 21, and an anoxic area without the aeration head 21 appears, thereby leading the reaction device 1 to have an environment suitable for the action of nitrobacteria and denitrifying bacteria, namely achieving the dynamic stability of the content of dissolved oxygen in the synchronous nitrification and denitrification, and further realizing the deep denitrification treatment of the sewage; and after the denitrification treatment of the sewage is finished, the sewage is output out of the reaction device 1 through the water outlet device.
Example two:
the difference from the first embodiment is that as shown in fig. 1-4 below, a driving source is connected to an end of the aeration tube 22, the driving source is one or more of a motor and a rotary cylinder, the driving source is used for driving the aeration tube 22 to rotate, a swivel is sleeved on an outer ring of the aeration tube 22, a through air inlet 221 is formed between the swivel and the aeration tube 22, and the air inlet 221 is communicated with an air pump through a hose;
the outer ring of the aeration head 21 is uniformly provided with arc-shaped blades 24, the arc-shaped blades 24 are bent towards one side close to the aeration head 21, and the thickness of the middle parts of the arc-shaped blades 24 is gradually reduced towards two sides.
The driving source drives the aerator pipe 22 to rotate, so that the aerator head 21 rotates, and when the gas is exploded through the aerator head 21, vortex can be formed, large bubbles generated when the gas is exploded are crushed, more small bubbles are formed, dissolved oxygen can be provided in the reaction device 1 more quickly, and therefore, the denitrification treatment of the sewage is performed, and the denitrification efficiency is improved; meanwhile, the aeration head 21 can transfer horizontal velocity to the sewage in the reaction device 1 during rotation, so that the sewage flows in the reaction device 1 in an internal circulation manner, and the denitrification treatment efficiency of the sewage is further improved;
in addition, the arc-shaped blades 24 are uniformly arranged on the outer ring of the aeration head 21, so that the resistance of sewage to the aeration head 21 can be reduced, the operation energy consumption is reduced, and the stable rotation of the aeration head 21 is ensured; meanwhile, one end of the arc-shaped blade 24 is bent towards one side close to the aeration head 21, so that a part of sewage can be wrapped and rotate along with the aeration head 21 during rotation of the aeration head 21, the contact frequency of the sewage and an aerated area is increased, and the denitrification treatment efficiency of the sewage is improved; the thickness of the middle part of the arc-shaped blade 24 is gradually reduced towards the two sides, so that no matter the sewage acts on one of the two ends of the arc-shaped blade 24 in the rotation process, when the deformation coefficient of the arc-shaped blade 24 is reached, part of the sewage in the rotation process can be stirred towards the opposite direction, and gas bubbles sprayed by the aeration head 21 are impacted, so that more small bubbles are generated, dissolved oxygen is provided more quickly, and the efficiency and the effect of sewage denitrification treatment are improved;
the specific working process is as follows:
the difference from the specific working process of the first embodiment is that, firstly, the gas enters the aeration pipe 22 through the hose, when the driving source drives the aeration head 21 to rotate, on one hand, the existence of the swivel enables the hose not to rotate along with the aeration pipe 22, on the other hand, the rotating aeration head 21 can enable the reaction device 1 to form a vortex, the large bubble formed by the gas burst of the aeration head 21 is broken by being matched with the pressure, more small bubbles are formed, dissolved oxygen can be provided more quickly, the arrangement of the arc-shaped blades 24 can slow down the resistance suffered by the aeration head 21 when the aeration head 21 rotates in the reaction device 1, so that the aeration head 21 rotates stably, meanwhile, when the acting force of the sewage on the arc-shaped blades 24 is greater than the deformation coefficients at the two ends of the arc-shaped blades 24, the rotating sewage can be provided with opposite acting force, and even if the arc-shaped blades 24 are subjected to the sewage acting force, the end of the arc-shaped blade 24 is still kept bent to the side close to the aeration head 21, thereby ensuring the effect of denitrification treatment of the sewage.
Example three:
the difference from the second embodiment is that, as shown in fig. 4 and fig. 6, a first air channel 241 is provided inside the arc-shaped blade 24, one end of the first air channel 241 is communicated with the inside of the aeration head 21, and the other end is communicated with an opening 242 provided on the arc-shaped blade 24, and the opening 242 is located at one end of the arc-shaped blade 24 away from the aeration head 21.
The first air channel 241 is arranged on the arc-shaped blade 24, so that air is sprayed out of the first air channel 241, meanwhile, the arc-shaped blade 24 rotates along with the first air channel, the acting area of the air is larger, the time wasted by the action of the air sprayed by the aeration head 21 from top to bottom is reduced, and the efficiency of denitrification treatment on sewage is improved;
the specific working process is as follows:
the difference from the second embodiment of the specific working process lies in that when the gas in the aeration pipe 22 enters the inner cavity of the aeration head 21 through one or more groups of gas inlet channels on the ball joint, a part of the gas is sprayed out through the aeration head 21, and the other part of the gas enters the first gas channel 241 and enters the reaction device 1 through the opening 242, so that the gas explosion speed can be increased, large bubbles generated during spraying can be changed into more small bubbles, dissolved oxygen can be provided more quickly, and the sewage denitrification treatment efficiency and effect can be improved.
Example four:
the third difference is that, as shown in fig. 3 and fig. 5, a semicircular elastic sheet 25 is arranged on the outer wall of the arc-shaped blade 24 located at the position of the opening 242, one end of the elastic sheet 25 is fixedly connected to the arc-shaped blade 24, and the other end is suspended and covers the opening 242;
the arc-shaped blade 24 positioned in the inner position of the elastic sheet 25 is provided with an inclined block 26, the inclined edge of the inclined block 26 is parallel to the angle of the opening 242, and the inclined edge of the inclined block 26 is uniformly provided with a group of grooves 261.
Through the arrangement of the semicircular elastic sheet 25 and the inclined block 26, when gas is sprayed out from the opening 242, the gas can act on the elastic sheet 25 along the inclined block 26 or directly, large bubbles generated during spraying are blocked by the elastic sheet 25 and are compressed, so that the large bubbles are changed into more small bubbles, meanwhile, a group of grooves 261 are uniformly arranged on the inclined block 26, when the large bubbles act on the elastic sheet 25 along the inclined block 26, the large bubbles move up and down on the grooves 261, and the large bubbles are more convenient to break and change into small bubbles; meanwhile, the elastic pieces 25 and the inclined blocks 26 form convex parts under the action of sewage, so that bubbles can be prevented from overflowing outwards along the arc-shaped blades 24, dissolved oxygen provided by the bubbles is maintained in the area of the aeration module 2, the area without the action of the aeration module 2 is maintained in an anoxic environment, nitrification and denitrification reactions can be carried out simultaneously, and the denitrification treatment effect on the sewage is ensured;
the specific working process is as follows:
the difference from the specific working flow of the third embodiment is that when the gas enters the first gas channel 241 and is sprayed out through the opening 242, the angle of the opening 242 is parallel to the inclined block 26 on the inclined block 26, so that the gas acts on the elastic sheet 25 along the inclined block 26, and the large bubbles formed when the gas is sprayed into the reaction device 1 are changed into more small bubbles; simultaneously, arc blade 24 rotates along with aeration head 21, because the effect of sewage, can produce the extrusion to shell fragment 25, make the unsettled one end of shell fragment 25 surpass the one side motion that is close to arc blade 24, and contact with arc blade 24's outer wall, and because the existence of sloping 26, make shell fragment 25 can not cave in, shell fragment 25 forms the convex part with the cooperation of sloping 26, can prevent the bubble from outwards spilling over along arc blade 24, dissolved oxygen that can avoid the bubble to provide enters into the region that does not have aeration module 2 effect, and influence the formation of this regional oxygen deficiency state, thereby realized that reaction unit 1 can carry out nitrification and denitrification simultaneously, realize the denitrogenation treatment to sewage, and reduced cost input and secondary pollution.
Example five:
the difference from the fourth embodiment is that, as shown in fig. 4 and fig. 6, a plugging plate 3 is arranged in a cavity inside the aeration head 21, the plugging plate 3 is installed on the inner wall of the jet head through a limiting spring 31, and the plugging plate 3 is located at the lower side of a communication part between the first air channel 241 and the inside of the jet head in the initial state, an air vent 32 corresponding to an aeration hole on the jet head is formed in the plugging plate 3, and a plug 33 with a group of inclined grooves is uniformly installed on the air vent 32.
By arranging the plugging plate 3, gas can be blocked to enter and accumulate pressure, so that the range of gas action is wider during subsequent spraying, the range of providing an aerobic environment for the action of the aeration module 2 is facilitated, more sewage can act simultaneously, and the sewage denitrification treatment efficiency is improved;
the specific working process is as follows:
the difference from the specific working flow of the fourth embodiment is that when gas enters the cavity inside the aeration head 21 from one or more groups of gas inlet channels on the ball joint, due to the arrangement of the blocking plate 3, the gas cannot immediately enter the first gas channel 241 and the aeration holes to be sprayed out, but pressure accumulation is performed under the action of the blocking plate 3, as the gas continuously enters the cavity inside the aeration head 21, the gas pushes the blocking plate 3 to move to one side close to the aeration holes, and as the blocking plate 3 continuously moves to one side close to the aeration holes, at this time, the communication part between the first gas channel 241 and the inside of the gas spraying head is separated from the blocking of the blocking plate 3, the gas enters the first gas channel 241 and is sprayed out along the opening 242, meanwhile, as the air vent 32 on the blocking plate 3 is provided with the plug 33 provided with one group of chutes, the gas can enter the area formed by the blocking plate 3 and the aeration head 21 along the chutes while ensuring the gas pressure accumulation, and through aeration hole blowout, in addition, set up spacing spring 31, in order to avoid the contact of the inner wall of shutoff board 3 upper surface and aeration head 21 inside cavity for it is more to enter into the gas in this region, more is favorable to the later stage from aeration hole blowout, thereby has improved the denitrogenation treatment effeciency to sewage.
Example six:
the difference from the fifth embodiment is that, as shown in fig. 4 and 6, a first magnetic block 34 is arranged at the end of the blocking plate 3, the arc-shaped blade 24 is sleeved on the outer ring of the air nozzle through a lantern ring 35 in which an air storage cavity is arranged, a second magnetic block 351 is arranged on the lantern ring 35, the first magnetic block 34 and the second magnetic block 351 are mutually attracted, an air groove 352 is arranged in the air nozzle, and the air groove 352 is respectively communicated with the inside of the air nozzle and the lantern ring 35.
By arranging the first magnetic block 34 and the second magnetic block 351 and under the interaction between the first magnetic block 34 and the second magnetic block 351, the lantern ring 35 drives the arc-shaped blade 24 to move up and down along the aeration head 21, the action range of dissolved oxygen is further improved, and the denitrification treatment efficiency of sewage is improved;
the specific working process is as follows:
different from the concrete work flow of the fifth embodiment, when the plugging plate 3 moves to one side close to the aeration hole under the action of gas, the end part of the plugging plate 3 is provided with the first magnetic block 34, and the first magnetic block 34 and the second magnetic block 351 arranged on the lantern ring 35 attract each other, so that the lantern ring 35 drives the arc-shaped blade 24 to move to one side close to the aeration hole, the aeration range is enlarged, and the denitrification treatment effect on sewage is improved.
Example seven:
the sixth difference from the sixth embodiment is that, as shown in fig. 4 and 6, the end surface of the plug 33 is provided with a plug rod 36, the outer ring of the plug rod 36 is provided with a spiral groove 361, and each plug rod 36 corresponds to an aeration hole one by one.
The plug rod 36 provided with the spiral groove 361 can reduce the size of the aeration hole, so that large bubbles generated by gas blown out from the aeration hole are changed into faster small bubbles due to the existence of the spiral groove 361, thereby faster providing dissolved oxygen and further improving the denitrification treatment effect on sewage;
the specific working process is as follows:
the difference from the sixth specific working flow of the embodiment lies in that, when the plugging plate 3 moves to a side close to the aeration hole under the action of the gas, and because the aeration hole corresponds to the plug rod 36 one to one, the plug rod 36 is inserted into the aeration hole when the plugging plate 3 moves to a side close to the aeration hole, and along with the continuous movement of the plugging plate 3, one end of the plug rod 36 extends out of the aeration hole and is located in the inner cavity of the aeration head 21, and the gas explodes along the spiral groove 361 on the plug rod 36 and is limited by the spiral groove 361, so that small bubbles generated after the gas explodes provide dissolved oxygen for the small bubbles, and the denitrification treatment work of the sewage is realized.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a sewage degree of depth denitrogenation system of low energy consumption, includes reaction unit (1), water installations, play water installation and the air pump that is used for sewage denitrification reaction, its characterized in that: further comprising:
the biological membrane carrier is arranged in the reaction device and is used for inhabitation, growth and propagation of microorganisms;
the aeration module (2) is communicated with an air pump, the aeration module (2) consists of an aeration head (21), an aeration pipe (22) and an adjusting unit (23), the aeration head (21) is connected to the end part of the aeration pipe (22) in a ball joint mode through a ball joint, one or more groups of air inlet channels are formed in the ball joint, the adjusting unit (23) comprises one or more of an air cylinder or an electric push rod, one end of the adjusting unit (23) is installed on the outer ring of the aeration pipe (22), the other end of the adjusting unit is installed at the bottom of the aeration head (21), and the adjustment of multiple angles of the aeration head (21) is achieved through the effect of the adjusting unit (23), so that the adjustment of the dissolved oxygen content is achieved;
and the control module is used for controlling the operation of the aeration module (2).
2. The low-energy-consumption sewage deep denitrification system according to claim 1, wherein: the end connection of aeration pipe (22) has the driving source, and the driving source is by one or more in motor or the revolving cylinder, and the driving source is used for driving aeration pipe (22) to rotate, and the cover is established the change on aeration pipe (22) outer lane, and opens between change and aeration pipe (22) and be equipped with inlet port (221) that link up, and inlet port (221) pass through hose and air pump intercommunication.
3. The low-energy-consumption sewage deep denitrification system according to claim 1, wherein: arc-shaped blades (24) are uniformly arranged on the outer ring of the aeration head (21), the arc-shaped blades (24) are bent towards one side close to the aeration head (21), and the thickness of the middle parts of the arc-shaped blades (24) is gradually reduced towards two sides.
4. The low-energy-consumption sewage deep denitrification system according to claim 3, wherein: an air channel I (241) is arranged inside the arc-shaped blade (24), one end of the air channel I (241) is communicated with the inside of the aeration head (21), the other end of the air channel I is communicated with an opening (242) formed in the arc-shaped blade (24), and the opening (242) is located at one end, far away from the aeration head (21), of the arc-shaped blade (24).
5. The low-energy-consumption sewage deep denitrification system according to claim 4, wherein: the outer wall of the arc-shaped blade (24) positioned at the opening (242) is provided with a semicircular elastic sheet (25), one end of the elastic sheet (25) is fixedly connected to the arc-shaped blade (24), and the other end of the elastic sheet is suspended and covers the opening (242).
6. The low-energy-consumption sewage deep denitrification system according to claim 5, wherein: the arc-shaped blade (24) positioned in the inner position of the elastic sheet (25) is provided with an inclined block (26), the inclined edge of the inclined block (26) is parallel to the angle of the opening (242), and the inclined edge of the inclined block (26) is uniformly provided with a group of grooves (261).
7. The low-energy-consumption sewage deep denitrification system according to claim 1, wherein: be provided with shutoff board (3) in aeration head (21) inside cavity, shutoff board (3) are installed on the inner wall of jet head through spacing spring (31), and shutoff board (3) initial condition is located the downside of an air channel (241) and the inside intercommunication department of jet head down, offer on shutoff board (3) with the jet head on aeration hole corresponding air vent (32), and install chock (33) of evenly seting up a set of chute on air vent (32).
8. The low-energy-consumption sewage deep denitrification system according to claim 7, wherein: the end part of the blocking plate (3) is provided with a first magnetic block (34), the arc-shaped blade (24) is sleeved on the outer ring of the air nozzle through a lantern ring (35) with an air storage cavity arranged inside, a second magnetic block (351) is arranged on the lantern ring (35), the first magnetic block (34) and the second magnetic block (351) are mutually attracted, an air groove (352) is formed in the air nozzle, and the air groove (352) is respectively communicated with the inside of the air nozzle and the lantern ring (35).
9. The low-energy-consumption sewage deep denitrification system according to claim 7, wherein: the end face of the plug block (33) is provided with plug rods (36), the outer ring of each plug rod (36) is provided with a spiral groove (361), and each plug rod (36) corresponds to the aeration hole one by one.
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Cited By (1)
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