CN209242874U - A kind of integral type synchronous denitrification dephosphorizing system - Google Patents
A kind of integral type synchronous denitrification dephosphorizing system Download PDFInfo
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a kind of integral type synchronous denitrification dephosphorizing system, which is concentrated on the whole in a container, and structure composition is close, and space hold is small.And using the mode of communicating of baffling, the process of sewage within the system is extended, the substrate in sewage is sufficiently mixed with microorganism and contacts.To guarantee effluent characteristics, the system is additionally provided with spare biomembrane reaction room, water quality monitor is provided in clean water chamber, for indexes such as metal ion, pH value and microelements in water quality after detection processing, once Testing index is unqualified not to be had controller that will control sewage and enter biomembrane reaction room by biological contact oxidation chamber to be handled, enter back into clear water reserviors storage.Since biomembrane reaction room is that selection uses, frequency of use is reduced, so longer before the week of maintenance, maintenance cost is lower.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a synchronous nitrogen and phosphorus removal system of integral type.
Background
Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is also increasingly carried into daily life of common people, and is classified according to sewage sources, and sewage treatment is generally divided into production sewage treatment and domestic sewage treatment.
Domestic sewage is one of important sources of water pollution in China, and the advanced treatment and recycling of the domestic sewage can reduce potential secondary pollution and relieve the current situation of water resource shortage in China, and is an effective way for realizing circular economy and developing ecological civilization, so that the process for treating the domestic sewage is continuously improved to meet the requirements of social development.
In Chinese utility model patent CN201510696581.1, A is disclosed2a/O-MBR-biological contact oxidation tank double-sludge efficient denitrification phosphorus removal device, A2the/O is connected with the biological contact oxidation tank through an MBR (membrane bioreactor), so that a good double-sludge system environment is ensured, and A is better ensured2The concentration of activated sludge in the/O prevents sludge loss. The membrane bioreactor has higher purchase and maintenance costs, greatly increases the sewage treatment cost, has no precipitation and filtration measures after the effluent is subjected to biological contact oxidation treatment, and has higher SS concentrationHigh, in addition, it is difficult to reach higher sludge concentration to lean on biological contact oxidation, and the efficiency of nitration is not high, and the first aeration zone of its equipment is unfavorable for the cultivation of denitrification phosphorus-accumulating fungus, when handling low carbon nitrogen ratio sewage, and the denitrogenation effect is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an integral synchronous nitrogen and phosphorus removal system which can meet the sewage treatment requirement and reduce the treatment cost is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
an integrated synchronous nitrogen and phosphorus removal system is characterized by comprising:
the reaction box body is enclosed by a wall plate to form a closed cavity, the cavity is internally divided into a plurality of treatment cavities which are sequentially communicated with each other by upper and lower broken lines by a baffle plate, each treatment cavity comprises an anaerobic chamber, an anoxic chamber, a biological selection chamber, a first settling chamber, a biological contact oxidation chamber, a second settling chamber and a clear water chamber which are sequentially arranged, and each of the first settling chamber, the biological contact oxidation chamber and the second settling chamber is formed by two treatment cavities, so that a water inlet and a water outlet of each of the first settling chamber and the second settling chamber are arranged at the upper parts;
wherein,
the bottom of the first settling chamber is externally connected with a sludge tank by a first sewage discharge pipe and is communicated with the anaerobic chamber by a sludge return pipe;
a biological filler is arranged in the biological contact oxidation chamber, a micro-nano bubble generator is arranged at the bottom of the biological contact oxidation chamber, and a water outlet on the biological contact oxidation chamber comprises a first water outlet and a second water outlet which are alternatively opened;
the bottom of the second settling chamber is connected with a sludge pool by a second sewage discharge pipe, the second settling chamber is communicated with a first water outlet of the biological contact oxidation chamber, a first sealing plate capable of covering and sealing the first water outlet is arranged on the first water outlet, and the first sealing plate is connected with a first driving part capable of driving the first sealing plate to open or close the first water outlet;
the clear water chamber is communicated with the anoxic chamber by a nitrifying liquid return pipe, and a water quality monitor is arranged in an inner cavity of the clear water chamber;
the treatment cavity further comprises a biomembrane reaction chamber, the biomembrane reaction chamber is communicated with a second water outlet of the biological contact oxidation chamber, a second sealing plate capable of covering and sealing the second water outlet is arranged on the second water outlet, the second sealing plate is connected with a second driving part capable of driving the second sealing plate to open or close the second water outlet, and the biomembrane reaction chamber is communicated with the clear water chamber by virtue of a water production pump;
the signal input end of the controller is connected with a water quality monitor, and the control output end of the controller is connected with a first driving part, a second driving part and a water producing pump.
In a further aspect, the anaerobic chamber and/or the anoxic chamber are formed by a plurality of treatment chambers.
The further technical scheme is that the bottom of the first settling chamber and/or the second settling chamber is provided with a mud guide plate which is obliquely arranged up and down, and the lower end of the mud guide plate is arranged towards the sewage discharge pipe connecting port.
The technical scheme is that the mud guide plate is movably arranged, a first supporting part and a second supporting part which are high, low and all telescopic are arranged at the bottom of the mud guide plate at intervals, and the first supporting part and the second supporting part are all connected with the control output end of the controller.
A further technical scheme lies in, micro-nano bubble generator is including communicating mixing chamber, broken chamber, cushion chamber and the atomizing chamber that sets up in proper order, be equipped with a plurality of orifices on the lateral wall between broken chamber and the cushion chamber, the mixing chamber external connection has the mixing tube body, the mixing tube body has inlet end and inlet end, be equipped with the bubble discharge port on the atomizing chamber.
A further technical scheme lies in, the upper portion and the broken chamber intercommunication of hybrid chamber are equipped with the polylith mixing plate that the level and upper and lower interval set up in the hybrid chamber, have water clearance between the lateral wall of the relative one end of two adjacent mixing plates and hybrid chamber for form the mixed runner of baffling in the hybrid chamber, have the cavity with mixing pipe body intercommunication in one or polylith mixing plate that the hybrid chamber bottom set up, form and spray the chamber board, spray the chamber board and enclose by the ripple board and constitute, and cloth has a plurality of jet orifice on spraying the chamber board.
A further technical scheme lies in, the vertical stirring axis body that is equipped with in middle part in broken intracavity, the one end of stirring axis body is connected with its rotatory driving motor of drive, be equipped with broken flabellum on the stirring axis body, equal altitude setting such as two broken flabellums that set up in stirring axis body both sides, and two broken flabellums upwards respectively with the downward sloping setting.
The technical scheme is that the crushing fan blades comprise crushing net sheets and dividing sheets, the crushing net sheets are located in a vertical plane, one ends of the crushing net sheets are fixed with the stirring shaft body, the mesh density of the crushing net sheets is less than 20 holes/square centimeter, and the dividing sheets are located in front of the rotation of the crushing net sheets and are vertically fixed with the crushing net sheets.
A further technical scheme lies in, vertically be equipped with the baffle between cushion chamber and the atomizing chamber, be equipped with the water clearance that makes between cushion chamber and the atomizing chamber intercommunication in the baffle bottom, be equipped with breach portion on baffle upper portion, the lower part of cushion chamber is equipped with the support orifice plate that a level set up, be equipped with an gasbag that is in the contraction state on the support orifice plate, the gasbag is external to have and is used for aerifing inside to make the gasbag inflation, get into the mechanism of aerifing of atomizing intracavity by breach portion with the inside bubble of extrusion cushion chamber, it connects in the control output of controller to aerify the mechanism.
The technical scheme is that an air blowing mechanism used for promoting bubbles to be discharged outwards is arranged below the notch portion in the atomizing cavity, the air blowing mechanism is provided with an air exhaust panel which is arranged in a downward inclined mode, an atomizer is arranged below the air exhaust mechanism, an outlet of the atomizer is communicated with the space above the air blowing mechanism, the top wall of the atomizing cavity is of a corrugated plate structure and is parallel to the air exhaust panel, and the bubble discharge port is distributed on the top wall of the atomizing cavity.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the system can process sewage in two sludge ages and convert the nitrification process from A2Separating out the water and the sewage in the biological contact oxidation tank to fully carry out nitration reaction. A. the2the/O is operated under the condition of short sludge age, does not require the nitrification function, and only carries out dephosphorization and denitrification treatment; the biological contact oxidation pond operates under the condition of long sludge age, which is more beneficial to the stability and high efficiency of the nitrification effect; a. the2The aerobic section (i.e. the biological selection chamber) of the/O is opened in the debugging stage to culture the phosphorus accumulating bacteria, and the section is in a closed state, i.e. an anoxic state, in the normal operation process to domesticate and culture the denitrifying phosphorus accumulating bacteria; the nitrate nitrogen returned from the biological contact oxidation pond is A2The anoxic zone of the/O provides sufficient electron acceptors, provides a good environment for denitrifying phosphorus removal, realizes 'one carbon dual-purpose' by the denitrifying phosphorus removal technology, has high sewage nitrogen and phosphorus removal efficiency, and is particularly suitable for sewage with low carbon-nitrogen ratio.
The system can reduce the treatment cost on the premise of meeting the sewage treatment effect, and the sewage is subjected to mud-water separation treatment before entering the biological contact oxidation tank through the arrangement of the first sediment in the system, and the backflow of the mud water is realized to ensure that the sewage A is treated2The concentration of the activated sludge in the/O can avoid the reduction of the biochemical reaction rate caused by the sludge loss.
And in order to ensure the effluent quality, the system is also provided with a standby biomembrane reaction chamber, a water quality monitor is arranged in the clean water chamber and is used for detecting indexes such as metal ions, pH values, trace elements and the like in the treated water, and once the detection indexes are unqualified, the controller can control the sewage to enter the biomembrane reaction chamber from the biological contact oxidation chamber for treatment and then enter the clean water tank for storage. Because the biomembrane reaction chamber is selected for use, the use frequency is reduced, the maintenance period is long before week, and the maintenance cost is low.
The biological contact oxidation chamber adopts a micro-nano bubble generator for aeration, and utilizes the synergistic effect of the super-dissolution air release technology and the nano dispersion technology to ensure that water and air are highly mixed mutually, thereby achieving the effect of rapid oxygenation and improving the oxygenation efficiency.
The system is integrally concentrated in integrated equipment, the structure is compact, and the occupied space is small. And the communication mode of baffling is adopted, the flow of the sewage in the system is prolonged, and the substrate in the sewage is fully mixed and contacted with the microorganism.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the reaction box of the present invention (the top plate and the front side plate of the reaction box are not shown);
fig. 3 is a schematic structural diagram of the micro-nano bubble generator of the present invention;
FIG. 4 is a schematic view of the working principle of the present invention;
fig. 5 is a schematic structural view of the mud guide plate of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 to 4, an integrated simultaneous phosphorus and nitrogen removal system includes a reaction chamber and a controller 10. The reaction box body is enclosed by the wallboard to form a closed cavity, a plurality of treatment chambers communicated with upper and lower broken lines in sequence are separated into in the cavity by a barrier plate, the treatment chambers comprise an anaerobic chamber 1, an anoxic chamber 2, a biological selection chamber 3, a first settling chamber 4, a biological contact oxidation chamber 5, a second settling chamber 6 and a clear water chamber 7 which are arranged in sequence, the system is integrated in a container on the whole, the structure is compact, and the space occupation is small. Wherein, first deposit room 4, biological contact oxidation room 5 and second deposit room 6 constitute by two processing chambers for the water inlet and the delivery port of first, second deposit room 4, 6 are all located upper portion, satisfy the requirement of intaking, going out the water of sedimentation tank, and can make anaerobic chamber 1, oxygen deficiency room 2, biological selection room 3, first deposit room 4, biological contact oxidation room 5, be upper and lower broken line intercommunication between second deposit room 6 and the clear water room 7, prolonged the flow of sewage in this system, make the substrate in the sewage and microorganism intensive mixing contact.
And the volume of a treatment cavity chamber that is equipped with water inlet port in the drip chamber is less, plays the cushioning effect, avoids the impact force disturbance sludge sedimentation of intaking, and another treatment cavity chamber's volume is great, plays the effect of main sediment, and sewage from bottom to top in the main drip chamber is reverse oozed, and the impact force is little, is favorable to deposiing.
The processing chambers are connected with each other by a pipe body. The bottom of the first settling chamber 4 is externally connected with a sludge tank 8 by a first sewage discharge pipe and is communicated with the anaerobic chamber 1 by a sludge return pipe. The bottom of the second settling chamber 6 is connected with a sludge tank 8 by a second sewage discharge pipe, and the clear water chamber 7 is communicated with the anoxic chamber 2 by a nitrifying liquid return pipe.
Biological filler is arranged in the biological contact oxidation chamber 5, and a micro-nano bubble generator 51 is arranged at the bottom of the biological contact oxidation chamber. The synergistic effect of the 'super-dissolving and air releasing technology' and the 'nano-dispersing technology' is utilized to ensure that water and air are highly dissolved and mixed to achieve the effect of rapid oxygenation.
In order to ensure the quality of the discharged water, the system is also provided with a water quality monitor 71 and a standby biomembrane reaction chamber 9.
The water quality monitor 71 is arranged in the clear water chamber 7, and comprises a metal ion concentration sensor, a pH tester and a trace non-metal element detector which are in signal connection with the controller 10 and are used for detecting indexes such as metal ions, pH values and trace elements in the treated water. The biofilm reaction chamber 9 or the second sedimentation tank is selected to be used according to the detection result of the water quality monitor 71.
The water outlet of the biological contact oxidation chamber 5 is located at the upper part and comprises a first water outlet 56 and a second water outlet 57 which are alternatively opened. The second settling chamber 6 is communicated with a first water outlet 56 of the biological contact oxidation chamber 5, a first sealing plate capable of covering and sealing the first water outlet 56 is arranged on the first water outlet 56, and the first sealing plate is connected with a first driving part 58 capable of driving the first water outlet 56 to be opened or closed. The biomembrane reaction chamber 9 is communicated with a second water outlet 57 of the biological contact oxidation chamber 5, a second sealing plate capable of covering and sealing the second water outlet 57 is arranged on the second water outlet 57, the second sealing plate is connected with a second driving part 59 capable of driving the second water outlet 57 to be opened or closed, and the biomembrane reaction chamber 9 is communicated with the clean water chamber 7 by a delivery water pump 91.
Wherein, first, second drive division 58, 59 all can adopt the cylinder, utilizes the cylinder to drive the shrouding up-and-down motion and realizes, and can adopt unsmooth complex slide structure between shrouding and the baffle that corresponds to guarantee the steady up-and-down motion of shrouding, and sealed with the laminating of delivery port, the preferred still can set up joint strip all around the inboard of shrouding and seal.
Based on the above structure, the signal input end of the controller 10 is connected with the water quality monitor 71, and the control output end thereof is connected with the first driving part 58, the second driving part 59 and the water producing pump 91. The controller 10 is a PLC-based programmable logic controller. The micro-nano bubble generator 51 can be started by the controller 10 or manually by a worker.
The system is characterized in that in the working process:
(1) domestic sewage enters the anaerobic chamber 1 from the regulating tank through the water inlet pump, and returned sludge pumped back from the bottom of the first settling chamber 4 through the sludge return pump synchronously enters the anaerobic chamber to control HRTAnaerobic reactionCarrying out anaerobic phosphorus release reaction on denitrifying phosphorus accumulating bacteria in an anaerobic chamber 1 for 2-3 h, and simultaneously absorbing soluble organic matters in the wastewater by using energy generated in the process to convert the soluble organic matters into poly β -hydroxybutyric acid and store the poly β -hydroxybutyric acid in cells;
(2) the mixed liquid enters the anoxic chamber 2 from the anaerobic chamber 1, and simultaneously enters the nitrification liquid from the biological contact oxidation chamber 5 to control HRTLack of oxygenThe denitrifying phosphorus accumulating bacteria oxidize poly β -hydroxybutyric acid stored in cells by using nitrate generated by nitrification in a contact oxidation chamber as an electron acceptor, complete self proliferation by using energy generated in the process, and simultaneously excessively absorb orthophosphate from sewage and store the orthophosphate in the cells in the form of phosphorus accumulation;
(3) the mixed liquid enters the aerobic zone from the anoxic zone to control HRTAerobicCarrying out aerobic phosphorus absorption reaction for 0.5-1.5 h;
(4) the mixed liquor enters a first settling chamber 4 from a biological selection chamber 3 to realize mud-water separation, supernatant containing ammonia nitrogen flows back to a biological contact oxidation chamber 5 through a water pump, a certain amount of phosphorus-containing sludge is discharged from the bottom of the first settling chamber 4 to achieve the purpose of phosphorus removal, the rest is pumped back to an anaerobic chamber 1, and the sludge reflux ratio is controlled to be 75-125%;
(5) the mixed liquor enters the biological contact oxidation chamber 5 from the first precipitation chamber 4, the aeration equipment in the biological contact oxidation chamber 5 adopts the micro-nano bubble generator 51, and the synergistic effect of the super-dissolution air release technology and the nano dispersion technology is utilized to highly dissolve and mix the water and the air, thereby achieving the effect of rapid oxygenation. Adding biological filler into the biological contact oxidation tank, wherein the specific surface area is 200m2/m 3-800 m2/m3, the filling ratio is 30-45%, the water retention time of a biological contact oxidation area is controlled to be 4-6 h, the dissolved oxygen concentration is 1.5-2.5 mg/L, nitrifying bacteria oxidize ammonia nitrogen into nitrate nitrogen, the effluent of the biological contact oxidation chamber 5 flows back to the anoxic chamber 2 through a nitrifying liquid reflux pump, and the nitrifying liquid reflux ratio is controlled to be 150-350%;
(6) the mixed liquor enters a second precipitation chamber 6 from the biological contact oxidation chamber 5 for precipitation again;
(7) the mixed liquor is precipitated in the second precipitation zone, enters the clean water tank for disinfection and is discharged from a water outlet of the clean water tank.
In the clear water tank, a water quality monitor 71 detects indexes such as metal ions, pH values, trace elements, and the like in the water quality.
Once the detection index is not qualified, the water quality monitor 71 transmits the signal to the controller 10, the controller 10 controls the first driving part 58 to operate, so that the first sealing plate closes the first water outlet 56, the communication between the biological contact oxidation chamber 5 and the second precipitation chamber 6 is blocked, and the second driving part 59 is controlled to operate at the same time, the second sealing plate opens the second water outlet 57, the biological contact oxidation chamber 5 and the biological membrane reaction chamber 9 are communicated, the sewage is treated by the biological contact oxidation chamber 5, then the sewage enters the biological membrane reaction chamber 9 for treatment by omitting the step (6), after a period of time, the controller 10 controls the water production pump 91 to operate, and the mixed liquid in the biological membrane reaction chamber 9 enters the clean water tank for disinfection and then is discharged from a water outlet of the clean water tank.
And (4) when the detection index is qualified, the biomembrane reaction chamber 9 is not used, and the steps (1) to (7) are repeated.
The anaerobic chamber 1 and/or the anoxic chamber 2 are/is composed of a plurality of treatment chambers, the anaerobic anoxic zone has the longest flow path under the same effective volume by adopting an up-down baffling mode, and substrates in the sewage are fully mixed and contacted with microorganisms under the action of water flow. And an oxidation-reduction potential (ORP, pH and dissolved oxygen DO) online monitoring instrument is arranged in the anaerobic zone and the anoxic zone to monitor the growth environment of the microorganisms.
As shown in fig. 5, the bottom of the first settling chamber 4 and/or the second settling chamber 6 is provided with a sludge guide plate 41 which is inclined up and down, and the lower end of the sludge guide plate 41 is arranged towards the sewage pipe connection port, so that the sludge can be discharged from the sewage outlet. And the mud guide plate 41 is movably arranged, a first supporting part 42 and a second supporting part 43 which are high, low and telescopic are arranged at the bottom of the mud guide plate 41 at intervals, the supporting parts can adopt oil cylinders, jacks and other equipment, and the first supporting part 42 and the second supporting part 43 are both connected with the control output end of the controller 10. Under normal conditions, two supporting portions incline to support mud guide plate 41 one high and one low, and when the mud needs to be discharged outwards, controller 10 controls the two supporting portions to extend in a staggered mode, and the two supporting portions are always kept in one low and one high setting, so that the two ends of mud guide plate 41 move up and down back and forth, and the mud on mud guide plate 41 is loosened and easy to discharge.
Micro-nano bubble generator 51 is including the hybrid chamber 52, broken chamber 53, cushion chamber 54 and the atomizing chamber 55 that communicate the setting in proper order, be equipped with a plurality of orifices 534 on the lateral wall between broken chamber 53 and the cushion chamber 54, orifice 534 can adopt the tip towards the bell mouth of cushion chamber 54, hybrid chamber 52 external connection has hybrid tube 523, hybrid tube 523 has inlet end and inlet end, be equipped with the bubble discharge port on the atomizing chamber 55. From the mixing tube 523, the water and the gas sequentially enter the mixing chamber 52, the crushing chamber 53, the buffer chamber 54 and the atomizing chamber 55 and then are discharged.
Solvent (usually, water) enters the mixing chamber 52 through the mixing tube 523, meanwhile, gas (usually, air) also enters the mixing chamber 52 through the mixing tube 523, the mixing chamber 52 can be mixed in a stirring manner, then the solvent enters the crushing chamber 53, bubbles in the solvent are further crushed rapidly, a certain pressure intensity is provided in the crushing chamber 53 at the moment, after the solvent enters the buffer chamber 54, the pressure is reduced, the bubbles are separated out, after the solvent enters the atomizing chamber 55, the residual solvent is atomized into micro-nano bubbles, and the micro-nano bubbles are discharged through the bubble discharge port together with the separated micro-nano bubbles.
The upper part of the mixing cavity 52 is communicated with the crushing cavity 53, and the mixing cavity 52 mainly adopts a baffling mode, so that the contact time and the flow path of water and gas are prolonged, and the water and the gas are uniformly mixed. Specifically, be equipped with the polylith mixing plate 521 that level and upper and lower interval set up in mixing chamber 52, have water clearance between the relative one end of two adjacent mixing plates 521 and the lateral wall of mixing chamber 52 for form the mixed runner of baffling in the mixing chamber 52, one or polylith mixing plate 521 that sets up in mixing chamber 52 bottom has the cavity that communicates with mixing pipe 523, forms and sprays chamber board 522, spray chamber board 522 and enclose by the corrugated plate and constitute, and cloth has a plurality of jet orifice on spraying chamber board 522, utilizes the shape characteristic of corrugated plate, makes the injection direction of jet orifice towards all directions, and has the condition that the injection direction intersects, has improved the homogeneity that water, gas mix.
A stirring shaft body 531 is vertically arranged in the middle of the crushing cavity 53, one end of the stirring shaft body 531 is connected with a driving motor 532 for driving the stirring shaft body 531 to rotate, crushing fan blades 533 are arranged on the stirring shaft body 531, the two crushing fan blades 533 arranged on two sides of the stirring shaft body 531 are arranged at the same height, namely the highest point and the lowest point of the two crushing fan blades 533 are the same, and the two crushing fan blades 533 are arranged upwards and downwards respectively. The resistance that the broken flabellum 533 that the slope set up received in rotatory process is less, and in this structure, two broken flabellums 533 of same height form a cone and an inverted cone respectively when rotatory, have guaranteed that the solution in broken chamber 53 is broken with the comprehensive contact of broken flabellum 533. When the high-pressure solvent-free high-speed stirring device is used, the driving motor 532 drives the stirring shaft body 531 to rotate at a high speed, the large bubbles are cut into small bubbles by the crushing fan blades 533, and the high-pressure solvent is rapidly released when the gas in the crushing cavity 53 enters the buffer cavity 54 through the throttling hole 534 during high-speed rotation, so that the air in the solvent is converted into the small bubbles to be released.
The crushing fan 533 comprises a crushing net 5331 and a dividing sheet 5332, the crushing net 5331 is located in a vertical plane, one end of the crushing net 5331 is fixed with the stirring shaft body 531, the mesh density of the crushing net 5331 is less than 20 holes/square centimeter, and meshes are distributed on the surface of the crushing net 5331 when the crushing net 5331 rotates at a high speed, so that air bubbles in the solvent can be further crushed rapidly, large air bubbles are cut into small air bubbles, and micro-nano air bubbles can be generated and formed conveniently. The dividing piece 5332 is positioned in front of the rotation of the crushing net 5331 and is vertically fixed with the crushing net 5331, the crushing fan 533 rotates to divide the solution in front of the crushing net 5331, so that the resistance of the rotation of the crushing net 5331 is reduced, and the effective contact surface of the crushing net 5331 and the solution can be ensured.
The baffle is vertically equipped with between cushion chamber 54 and the atomizing chamber 55, is equipped with the water clearance that makes intercommunication between cushion chamber 54 and the atomizing chamber 55 in the baffle bottom, is equipped with breach portion 541 in baffle upper portion, the lower part of cushion chamber 54 is equipped with the support orifice plate 542 of a level setting, be equipped with an gasbag 543 that is in the contraction state on the support orifice plate 542, gasbag 543 external is used for inflating to its inside and makes gasbag 543 inflation, gets into the air inflation mechanism 544 in the atomizing chamber 55 by breach portion 541 with the inside bubble of extrusion cushion chamber 54, air inflation mechanism 544 connects in the control output of controller 10. When the solvent that the rotation flows is at the time of through orifice 534, in being got rid of the buffer chamber 54 under the effect of centrifugal force, make high-speed rotatory solvent pressure in the twinkling of an eye released, thereby lead to the inside air of solvent to separate out rapidly and become micro-nano bubble, after a period of time, controller 10 control gasbag 543 inflation, make gasbag 543 extrusion buffer chamber 54 in the space, the micro-nano bubble that separates out this moment will follow breach portion 541 on the baffle and get into atomizing chamber 55, some liquid gets into atomizing chamber 55 from the water gap of bottom and is atomized, remaining solvent is atomized into micro-nano bubble, discharge through the bubble discharge port along with the micro-nano bubble that separates out together. In this configuration, the change of the state of expansion-contraction of the air bag 543 is performed by the controller 10 intermittently controlling the inflation mechanism 544, that is, the air bag 543 is expanded once from the cushion chamber 54 without a certain time interval.
In order to enhance the efficiency of discharging bubbles, a blower 551 is further disposed in the atomizing chamber 55, which is beneficial to accelerating the discharge of micro-nano bubbles. The air blowing mechanism 551 used for promoting bubbles to be discharged outwards is arranged below the notch portion 541 in the atomizing cavity 55, the air blowing mechanism 551 is provided with an exhaust panel which is arranged in a downward inclined mode, the atomizer 552 is arranged below the exhaust mechanism, an outlet of the atomizer 552 is communicated with a space above the air blowing mechanism 551, the exhaust panel can receive micro-nano bubbles entering from the notch portion 541 and guide the micro-nano bubbles into the atomizing cavity 55, the exhaust panel is arranged in an inclined mode compared with the horizontal mode, the exhaust direction of the exhaust panel is intersected with the ascending direction of the micro-nano bubbles discharged from the atomizer 552, and therefore the micro-nano bubbles discharged from the atomizer 552 can be blown out together. The top wall of the atomizing cavity 55 is of a corrugated plate structure and is arranged in parallel with the exhaust panel, and the bubble discharge port is distributed on the top wall of the atomizing cavity 55. Similarly, the discharge direction of the bubble discharge port is directed in various directions by utilizing the shape characteristics of the corrugated plate, and the bubble discharge port can be uniformly contacted and adsorbed with the mixed liquid in the biological contact oxidation chamber 5, and the diameter of the bubble discharge port is 1 cm.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (10)
1. An integrated synchronous nitrogen and phosphorus removal system is characterized by comprising:
the reaction box body is enclosed by a wall plate to form a closed cavity, the cavity is internally divided into a plurality of treatment cavities which are communicated with each other by an upper broken line and a lower broken line in sequence by a baffle plate, each treatment cavity comprises an anaerobic chamber (1), an anoxic chamber (2), a biological selection chamber (3), a first settling chamber (4), a biological contact oxidation chamber (5), a second settling chamber (6) and a clear water chamber (7) which are arranged in sequence, and the first settling chamber (4), the biological contact oxidation chamber (5) and the second settling chamber (6) are formed by two treatment cavities, so that water inlets and water outlets of the first settling chamber (4) and the second settling chamber (6) are arranged at the upper parts;
wherein,
the bottom of the first settling chamber (4) is externally connected with a sludge tank (8) by a first sewage discharge pipe and is communicated with the anaerobic chamber (1) by a sludge return pipe;
a biological filler is arranged in the biological contact oxidation chamber (5), a micro-nano bubble generator (51) is arranged at the bottom of the biological contact oxidation chamber, and a water outlet on the biological contact oxidation chamber (5) comprises a first water outlet (56) and a second water outlet (57) which are alternatively opened;
the bottom of the second settling chamber (6) is connected with a sludge tank (8) by a second sewage discharge pipe, the second settling chamber (6) is communicated with a first water outlet (56) of the biological contact oxidation chamber (5), a first sealing plate capable of covering and sealing the first water outlet (56) is arranged on the first water outlet (56), and the first sealing plate is connected with a first driving part (58) capable of driving the first water outlet (56) to be opened or closed;
the clear water chamber (7) is communicated with the anoxic chamber (2) by a nitrifying liquid return pipe, and a water quality monitor (71) is arranged in an inner cavity of the clear water chamber;
the treatment chamber further comprises a biomembrane reaction chamber (9), the biomembrane reaction chamber (9) is communicated with a second water outlet (57) of the biological contact oxidation chamber (5), a second sealing plate capable of covering and sealing the second water outlet (57) is arranged on the second water outlet (57), the second sealing plate is connected with a second driving part (59) capable of driving the second sealing plate to open or close the second water outlet (57), and the biomembrane reaction chamber (9) is communicated with the clean water chamber (7) by a production water pump (91);
the water quality monitoring device comprises a controller (10), wherein a signal input end of the controller (10) is connected with a water quality monitor (71), and a control output end of the controller is connected with a first driving part (58), a second driving part (59) and a water producing pump (91).
2. The system of claim 1, wherein the anaerobic chamber (1) and/or anoxic chamber (2) is formed by a plurality of treatment chambers.
3. The system of claim 1, wherein the bottom of the first settling chamber (4) and/or the second settling chamber (6) is provided with a sludge guide plate (41) which is inclined up and down, and the lower end of the sludge guide plate (41) faces the sewage pipe connection port.
4. The system of claim 3, wherein the sludge guide plate (41) is movably disposed, a first supporting portion (42) and a second supporting portion (43) are disposed at the bottom of the sludge guide plate (41) at an interval, and both of the first supporting portion (42) and the second supporting portion (43) are capable of extending and retracting, and both of the first supporting portion (42) and the second supporting portion (43) are connected to the control output end of the controller (10).
5. The integrated synchronous nitrogen and phosphorus removal system of claim 1, wherein the micro-nano bubble generator (51) comprises a mixing chamber (52), a crushing chamber (53), a buffer chamber (54) and an atomization chamber (55) which are sequentially communicated, a plurality of orifices (534) are arranged on the side wall between the crushing chamber (53) and the buffer chamber (54), the mixing chamber (52) is externally connected with a mixing pipe body (523), the mixing pipe body (523) is provided with a water inlet end and a gas inlet end, and a bubble outlet is arranged on the atomization chamber (55).
6. The system of claim 5, wherein the upper portion of the mixing chamber (52) is communicated with the crushing chamber (53), a plurality of mixing plates (521) are horizontally and vertically arranged in the mixing chamber (52) at intervals, a water gap is formed between one end of each of the two adjacent mixing plates (521) and the side wall of the mixing chamber (52), so that a baffled mixing flow channel is formed in the mixing chamber (52), one or more mixing plates (521) arranged at the bottom of the mixing chamber (52) are provided with a cavity communicated with the mixing pipe body (523) to form an injection chamber plate (522), the injection chamber plate (522) is surrounded by corrugated plates, and a plurality of injection holes are distributed on the injection chamber plate (522).
7. The system of claim 5, wherein a stirring shaft body (531) is vertically arranged in the middle of the crushing cavity (53), one end of the stirring shaft body (531) is connected with a driving motor (532) for driving the stirring shaft body (531) to rotate, the stirring shaft body (531) is provided with crushing blades (533), two crushing blades (533) arranged on two sides of the stirring shaft body (531) are arranged at equal height, and the two crushing blades (533) are respectively arranged in an upward and downward inclination manner.
8. The system of claim 7, wherein the fan blades (533) comprise a breaking mesh (5331) and a dividing plate (5332), the breaking mesh (5331) is located in a vertical plane, one end of the breaking mesh is fixed to the stirring shaft body (531), the mesh density of the breaking mesh (5331) is less than 20 holes/cm, and the dividing plate (5332) is located in front of the rotation of the breaking mesh (5331) and is fixed perpendicular to the breaking mesh.
9. The system of claim 5, wherein a partition is vertically disposed between the buffer chamber (54) and the atomization chamber (55), a water gap is disposed at the bottom of the partition to communicate the buffer chamber (54) and the atomization chamber (55), a notch (541) is disposed at the upper portion of the partition, a horizontally disposed support orifice plate (542) is disposed at the lower portion of the buffer chamber (54), an air bag (543) in a contracted state is disposed on the support orifice plate (542), the air bag (543) is externally connected with an inflation mechanism (544) for inflating the air bag (543) to expand the air bag to extrude the air bubbles inside the buffer chamber (54) to enter the atomization chamber (55) through the notch (541), and the inflation mechanism (544) is connected to the control output end of the controller (10).
10. The system of claim 9, wherein an air blowing mechanism (551) for promoting the outward discharge of the bubbles is disposed below the notch (541) in the atomizing chamber (55), the air blowing mechanism (551) has an air exhaust panel disposed at a lower inclination, an atomizer (552) is disposed below the air exhaust mechanism, an outlet of the atomizer (552) is communicated with a space above the air blowing mechanism (551), a top wall of the atomizing chamber (55) is corrugated and disposed parallel to the air exhaust panel, and the bubble discharge port is disposed on the top wall of the atomizing chamber (55).
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| CN201822067163.8U CN209242874U (en) | 2018-12-10 | 2018-12-10 | A kind of integral type synchronous denitrification dephosphorizing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109354330A (en) * | 2018-12-10 | 2019-02-19 | 河北先河正合环境科技有限公司 | A kind of integral type synchronous denitrification dephosphorizing system |
| CN112358039A (en) * | 2021-01-15 | 2021-02-12 | 华夏碧水环保科技有限公司北京分公司 | Moving bed biofilm reactor and sewage treatment system |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109354330A (en) * | 2018-12-10 | 2019-02-19 | 河北先河正合环境科技有限公司 | A kind of integral type synchronous denitrification dephosphorizing system |
| CN109354330B (en) * | 2018-12-10 | 2024-05-14 | 河北先河正合环境科技有限公司 | Synchronous denitrification dephosphorization system of integral type |
| CN112358039A (en) * | 2021-01-15 | 2021-02-12 | 华夏碧水环保科技有限公司北京分公司 | Moving bed biofilm reactor and sewage treatment system |
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