CN116099810A - Cleaning system and cleaning method for efficiently cleaning aerator - Google Patents
Cleaning system and cleaning method for efficiently cleaning aerator Download PDFInfo
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- CN116099810A CN116099810A CN202210938784.7A CN202210938784A CN116099810A CN 116099810 A CN116099810 A CN 116099810A CN 202210938784 A CN202210938784 A CN 202210938784A CN 116099810 A CN116099810 A CN 116099810A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/003—Cleaning involving contact with foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
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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
- C02F7/00—Aeration of stretches of water
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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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- Cleaning Or Drying Semiconductors (AREA)
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Abstract
The invention discloses a cleaning system and a cleaning method for efficiently cleaning an aerator, wherein the cleaning system comprises an aeration tank and the aerator, the aerator is arranged in the aeration tank, the cleaning system also comprises a micro-nano bubble generating device arranged in the aeration tank, the micro-nano bubble generating device comprises a filter box, a water pump, a micro-nano bubble generator and an air inlet component, a containing cavity is arranged in the filter box and communicated with the interior of the aeration tank, the water pump and the micro-nano bubble generator are arranged in the containing cavity, the water pump and the air inlet component are respectively connected with the micro-nano bubble generator, and an outlet of the micro-nano bubble generator is communicated with the interior of the aeration tank. The invention can efficiently clean the aerator through micro-nano bubbles, does not need to stop production and empty the aeration tank in the cleaning process, does not need to use chemical agents, greatly reduces the cleaning difficulty and the operation cost, and is a green cleaning technology. The micro-nano bubbles can not damage the aerator in the cleaning process, and the service life of the aerator is prolonged.
Description
Technical Field
The invention relates to a micro-nano bubble generating device, in particular to a cleaning system and a cleaning method for efficiently cleaning an aerator.
Background
Aeration is a means of promoting the exchange of substances between gas and liquid by artificially introducing air into a biochemical aeration tank by appropriate equipment to achieve the intended purpose. The aeration not only can make the liquid in the pool contact with the air for oxygenation, but also can accelerate the transfer of oxygen in the air to the liquid for oxygenation due to stirring; in addition, aeration can also prevent the suspension in the pond from sinking, strengthen the contact of organic matters in the pond and microorganisms with dissolved oxygen, thereby guaranteeing that the microorganisms in the pond carry out oxidative decomposition on the organic matters in the sewage under the condition of sufficient dissolved oxygen. The quality of the aeration device not only affects the biochemical treatment effect of sewage, but also directly affects the occupation area, investment, running cost and the like of a treatment plant. Aeration is widely applied to biological treatment processes, such as a common activated sludge method and a biological contact oxidation method, and has become an important sewage treatment link.
The aerator is one of common aeration devices, and generally consists of an aeration disc (aeration pipe), a main pipe at the bottom of the tank, a branch pipe, a pipeline support, an expansion joint, a dewatering system and the like, and meanwhile, a blower and a corresponding pipeline system are matched. After the aerator runs for a long time, calcium and iron scale in water is easy to deposit on the aeration membrane, and the following effects are caused after the holes of the aerator are blocked by the scale:
(1) After the aerator is blocked, the oxygen transfer efficiency is greatly reduced, and the sewage treatment effect is seriously affected;
(2) After the aerator is blocked, the air demand is greatly increased, and the running power of the fan is increased, so that the sewage treatment cost is increased;
(3) The aerator is not easy to replace after being blocked, and the cleaning and maintenance are difficult.
In order to solve the problem of blockage of the aerator, the following method is often adopted for cleaning at present:
(1) Stopping production and draining the aeration tank, and cleaning with water and a brush or by using a high-pressure water gun;
(2) Stopping production, draining the aeration tank, removing the aerators, and cleaning one by one;
(3) Stopping production and drying the aeration tank, and removing the aeration group from the aeration tank to clean or replace the aerator with serious blockage.
The method is characterized in that the production stopping and the emptying of the aeration tank are needed, the blocked aerator cannot fully recover ventilation after cleaning, a certain damage is caused to the aerator in the cleaning process, the normal service life of the aerator is shortened, meanwhile, the condition that the production stopping and the emptying of the aeration tank are difficult to realize in practice in a sewage plant is achieved, and a new aerator can be arranged only when the aerator is blocked to seriously influence the normal production.
Disclosure of Invention
The invention aims to provide a cleaning system and a method for efficiently cleaning an aerator, which can efficiently clean the blocked aerator without stopping production and emptying an aeration tank, and can not damage the aerator in the cleaning process.
The technical scheme is as follows:
the invention discloses a cleaning system for efficiently cleaning an aerator in an embodiment.
The utility model provides a cleaning system of high-efficient washing aerator, includes aeration tank and aerator, and the aerator is arranged in the aeration tank, still includes the micro-nano bubble generating device who arranges in the aeration tank, and micro-nano bubble generating device includes rose box, water pump, micro-nano bubble generator and subassembly that admits air, is equipped with the holding cavity in the rose box, and the holding cavity communicates with each other with the aeration tank inside, and in water pump and the micro-nano bubble generator arranged in the holding cavity, water pump and the subassembly that admits air link to each other with micro-nano bubble generator respectively, and micro-nano bubble generator's export communicates with each other with the aeration tank inside.
Further, the micro-nano bubble generating device further comprises a bubble water releaser, an inlet of the bubble water releaser is connected with an outlet of the micro-nano bubble generator, an outlet of the bubble water releaser is arranged outside the filter tank, and an outlet of the bubble water releaser is arranged in the aeration tank.
Further, the air inlet assembly comprises an air inlet pipeline, the air inlet pipeline is connected with the micro-nano bubble generator, and an air inlet valve and a negative pressure meter are arranged on the air inlet pipe.
Further, a plurality of filtering holes are formed in the filtering box, and the accommodating cavity in the filtering box is communicated with the interior of the aeration tank through the filtering holes.
Further, the aerator is arranged at the bottom of the aeration tank and is connected with the air blower through a ventilating pipeline.
In another embodiment, the invention discloses a cleaning method for efficiently cleaning an aerator.
A cleaning method for efficiently cleaning an aerator comprises the following steps:
s1, acquiring sewage in an aeration tank by a micro-nano bubble generation device;
s2, the micro-nano bubble generating device acquires gas, the gas and the sewage are fully mixed, and a high-speed vortex is formed in a high vacuum state to obtain micro-nano bubbles;
s3, releasing the micro-nano bubbles into an aeration tank loaded with the aerator.
Further, in step S3, specifically, the method includes:
the micro-nano bubble generator of the micro-nano bubble generating device conveys the gas-liquid mixed water containing micro-nano bubbles to the bubble water releaser;
the bubble water releaser releases the gas-liquid mixed water into an aeration tank provided with an aerator.
Further, the aeration tank is filled with the gas-liquid mixed water containing micro-nano bubbles, and after the micro-nano bubbles enter the aerator, the binding force between the sediment on the aerator and the surface of the substrate can be weakened through permeation relaxation and air floatation.
Further, an air inlet valve and a negative pressure meter are arranged on the air inlet assembly, the air inlet valve is used for controlling the air inflow entering the micro-nano bubble generator, and the negative pressure meter is used for measuring the pressure value of the sucked air.
Further, the high vacuum state in the micro-nano bubble generating device is more than-0.09 MPa.
The advantages and principles of the invention are described below:
1. the cleaning system for the high-efficiency cleaning aerator comprises a micro-nano bubble generating device, and sewage pumped by a water pump after filtration and gas conveyed by an air inlet component are mixed in the micro-nano bubble generator to form gas-liquid mixed water containing micro-nano bubbles. The gas-liquid mixed water is released to the aeration tank and enters the aerator, and as the micro-nano bubbles have high-efficiency interfacial activity, super-strong permeation effect and micro-blasting force, the binding force between sediment on the aerator at the bottom of the tank and the surface of a substrate is weakened through permeation relaxation and air floatation effect, dirt is adsorbed, residues are taken away, and therefore the effect of cleaning the aerator is achieved. The invention can efficiently clean the aerator through micro-nano bubbles, does not need to stop production and empty the aeration tank in the cleaning process, does not need to use chemical agents, greatly reduces the cleaning difficulty and the operation cost, and is a green cleaning technology. The micro-nano bubbles can not damage the aerator in the cleaning process, and the service life of the aerator is prolonged.
2. The micro-nano bubbles can remove scale, recover the ventilation of the aerator, reduce the aeration air quantity, control the running power consumption of the blower, reduce the running cost, save the cleaning procedure and the cleaning time of the aeration disc, effectively digest excess sludge and reduce the sludge dewatering pressure.
Drawings
FIG. 1 is a schematic diagram of a cleaning system;
FIG. 2 is a flow chart of a cleaning method of the cleaning system;
FIG. 3 is a graph showing the comparison of the first experiment with the experiment after the aeration panel test of the No. 3 tank;
FIG. 4 is a graph showing the comparison of the first experiment with the experiment after the aeration panel test of the No. 4 tank;
FIG. 5 is a graph showing the comparison of wind pressure gauges before and after the test in the first test;
FIG. 6 is a graph showing the variation of wind pressure before and after the test in the first test;
FIG. 7 is a graph showing the variation of water amount and energy consumption before and after the test in the first test;
FIG. 8 is a graph showing the variation of wind pressure on line 5 in the second test;
FIG. 9 is another graph showing the variation of wind pressure on line 5 in the second test;
FIG. 10 is a graph showing the variation of wind pressure on the 5# line in the second test;
FIG. 11 is a chart comparing wind pressure gauges before and after the test in the second test;
FIG. 12 is a schematic view of an aeration disc prior to testing in a second test;
FIG. 13 is a representation of the pressure prior to testing in the second example test;
FIG. 14 is a schematic view of a pool 5 pressure gauge and aeration disc after testing in a second test;
FIG. 15 is a schematic view of a cell number 6 pressure gauge and aeration disc after testing in a second test;
FIG. 16 is a graph of ammonia nitrogen contrast of effluent from line 5, line 6 in a second test;
FIG. 17 is a graph of total nitrogen output versus line 5, line 6 in a second test;
FIG. 18 is a graph of total phosphorus output versus line 5, line 6 in a second test;
reference numerals illustrate:
1. a filter box; 2. a filter hole; 3. a water pump; 4. an intake valve; 5. a negative pressure meter; 6. an air intake duct; 7. a micro-nano bubble generator; 8. a bubble water releaser; 9. an aeration tank; 10. a blower; 11. a ventilation duct; 12. an aerator.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
First embodiment:
as shown in fig. 1, the present invention discloses a cleaning system for efficiently cleaning an aerator, which is capable of efficiently cleaning an aerator 12 in an aeration tank 9, in one embodiment.
The cleaning system for efficiently cleaning the aerator comprises an aeration tank 9 and an aerator 12, wherein the aerator 12 is arranged in the aeration tank 9. Preferably, a plurality of aerators 12 are provided, and the plurality of aerators 12 are uniformly distributed at the bottom of the aeration tank 9. The aerator 12 is connected to the blower 10 through a ventilation pipe 11. The blower 10 is disposed outside the aeration tank 9, and air is supplied into the aerator 12 by the blower 10. The aerator 12 includes an aeration disc (aeration pipe) and an air pipe, and the structure and the working principle of the aerator 12 are all the prior art and are not described herein.
In order to realize the cleaning of the aerator 12, the cleaning system also comprises a micro-nano bubble generating device which is fixed inside the aeration tank 9. The micro-nano bubble generating device comprises a filter box 1, a water pump 3, a micro-nano bubble generator 7 and an air inlet component, wherein a containing cavity is arranged in the filter box 1 and is communicated with the interior of an aeration tank 9. In order to enable sewage in the aeration tank 9 to enter the accommodating cavity, a plurality of filter holes 2 are arranged on the filter box 1, and the accommodating cavity in the filter box 1 is communicated with the interior of the aeration tank 9 through the filter holes 2. Due to the fact that the filter holes 2 are formed in the filter box 1, sewage in the aeration tank 9 can enter the filter box 1 through the filter holes 2, meanwhile, floating (suspended matters) in the sewage can be intercepted through the filter holes 2, and the floating matters in the sewage are prevented from entering the filter box 1.
The water pump 3 and the micro-nano bubble generator 7 are arranged in the accommodating cavity, the water pump 3 and the air inlet component are respectively connected with the micro-nano bubble generator 7, and the outlet of the micro-nano bubble generator 7 is communicated with the interior of the aeration tank 9. The air inlet assembly comprises an air inlet pipeline 6, the air inlet pipeline 6 is connected with a micro-nano bubble generator 7, and the air inlet pipeline 6 is provided with an air inlet valve 4 and a negative pressure meter 5. The air inlet pipe 6 is self-sucking to suck in air due to the internal high vacuum state of the micro-nano bubble generator 7. The intake valve 4 provided on the intake pipe 6 is mainly used for controlling the intake air amount of the gas, and the negative pressure gauge 5 is mainly used for measuring the pressure value of the sucked gas, thereby determining whether the pressure value of the gas reaches the design negative pressure value.
Further, the micro-nano bubble generating device further comprises a bubble water releaser 8, and the bubble water releaser 8 is also arranged in the accommodating cavity in the filter box 1. The inlet of the bubble water releaser 8 is connected with the outlet of the micro-nano bubble generator 7, the outlet of the bubble water releaser 8 is arranged outside the filter box 1, and the outlet of the bubble water releaser 8 is arranged in the aeration tank 9.
When the cleaning system of the embodiment is used, sewage in the aeration tank 9 enters the interior of the tank body through the filtering holes 2 on the filtering tank 1, and then is conveyed into the micro-nano bubble generator 7 through the water pump 3. The gas enters the micro-nano bubble generator 7 through the gas inlet pipe 6. Sewage and gas are fully mixed in the micro-nano bubble generator 8, the gas is rotated and reflowed in a high vacuum state of the micro-nano bubble generator 7 to form a high-speed vortex, and the high-speed rotation and reflow are sprayed in the pressurized water to form micro-nano bubbles.
The gas-liquid mixed water generated by the micro-nano bubble generator 7 is released by the bubble water releaser 8 and then evenly mixed into the sewage of the aeration tank 9. The micro-nano bubble generator 7 has low aeration energy consumption and high oxygen transfer efficiency, and can generate a large number of micro-nano bubbles, so that the micro-nano bubbles can fill the whole aeration reaction tank. The micro-nano bubbles in the sewage have high-efficiency interfacial activity, super-strong permeation effect and micro-blasting force, and the bonding force between the sediment on the aerator 12 and the surface of the matrix is weakened through permeation relaxation and air floatation effect, so that dirt is adsorbed, residues are taken away, and the effect of cleaning the aerator 12 is achieved.
The aerator 12 can be efficiently cleaned through micro-nano bubbles, the aeration tank 9 does not need to be stopped in the cleaning process, the chemical agent does not need to be used, the cleaning difficulty and the running cost are greatly reduced, and the method is a green cleaning technology. The micro-nano bubbles can not damage the aerator 12 in the cleaning process, and the service life of the aerator 12 is prolonged.
The micro-nano bubbles can remove scale, recover the ventilation of the aerator, reduce the aeration air quantity, control the running power consumption of the blower 10, reduce the running cost, save the cleaning procedure and the cleaning time of the aeration disc, effectively digest excess sludge and reduce the sludge dewatering pressure.
The micro-nano bubble generator 7 of the present embodiment has a certain space inside, and can generate a high vacuum state (-0.09 MPa or more), and by self-sucking air, decompression or acceleration occurs, and a high-speed flow is formed by spin reflow. The high-speed air is sprayed in the pressurized water flow, and the gas-liquid layers are cut off and mixed at high speed due to the gas-liquid collision energy generated by the high-speed air, so that micro-nano bubbles are generated. The structures of the micro-nano bubble generator 7 and the bubble water releaser 8 in this embodiment may be the same as the structures and principles of the micro-nano aeration device in patent number 201921421646.1 applied by the applicant, and will not be described here again.
In another embodiment, the invention discloses a cleaning method for efficiently cleaning an aerator, which comprises the following steps:
s1: the micro-nano bubble generating device obtains sewage in the aeration tank.
The filter tank 1 is arranged in the aeration tank 9, a plurality of filter holes 2 are formed in the filter tank 1 for filtering sewage, the sewage in the aeration tank 9 enters the filter tank 1 through the plurality of filter holes 2, large-particle floating matters in the aeration tank 9 can be effectively prevented from entering the filter tank 1 through the arrangement of the filter holes 2, and the micro-nano bubble generating device is arranged in the filter tank 1.
S2: the micro-nano bubble generating device acquires gas, fully mixes the gas with the sewage, and forms high-speed vortex under a high vacuum state to obtain micro-nano bubbles.
The filter box 1 is internally provided with a water pump 3, the water pump 3 and the micro-nano bubble generator 7 of the micro-nano bubble generating device are arranged in the filter box 1, and sewage in the filter box 1 is conveyed into the micro-nano bubble generator 7 through the water pump 3. The air inlet assembly comprises an air inlet pipeline 6, an air inlet valve 4 and a negative pressure meter 5 are arranged on the air inlet pipeline 6, the air inlet valve 4 is used for controlling the air inflow of air entering the micro-nano bubble generator 7, and the negative pressure meter 5 is used for measuring the pressure value of inhaled air. The gas enters the micro-nano bubble generator 7 through the air inlet pipeline 6, and the gas can be air, ozone or the like.
S3: and releasing the micro-nano bubbles into an aeration tank loaded with the aerator.
Further, the step S3 specifically includes:
the micro-nano bubble generator 7 conveys gas-liquid mixed water containing micro-nano bubbles to the bubble water releaser 8;
the bubble water releaser 8 releases the gas-liquid mixed water into an aeration tank 9 provided with an aerator 12.
The aeration tank 9 is filled with the gas-liquid mixed water containing micro-nano bubbles, and after the micro-nano bubbles enter the aerator 12, the binding force between the sediment on the micro-nano bubbles and the surface of the matrix can be weakened through permeation relaxation and air floatation, dirt is adsorbed, residues are taken away, and the purpose of cleaning the aerator 12 in the aeration tank 9 is achieved. The high vacuum state in the micro-nano bubble generator 7 is more than-0.09 MPa.
The micro-nano bubble generator 7 of the embodiment can realize on-line efficient cleaning of the aerator on the premise of stable operation of the original aeration system in the aeration tank 9, can avoid shutdown in the cleaning process, and solves the dilemma of shutdown, water shutdown and cleaning.
The micro-nano bubbles can remove scale, restore the ventilation of the aerator 12, reduce aeration air quantity, reduce air pressure and air-water ratio, reduce the running power consumption of the blower 10, reduce running cost, reduce cleaning difficulty, save the aerator disassembly cleaning time, manual cleaning cost, cleaning agent cost and the like.
The micro-nano bubbles can not damage the aerator 12 in the cleaning process, so that the aeration quantity of the aerator 12 can be recovered, the blockage of the aerator 12 can be prevented, the service life is prolonged, and the sewage treatment effect and the production benefit of a sewage treatment plant are improved. The micro-nano bubble generating device has no noise in operation, and has good promotion effects on improving the post operation environment and improving the enterprise image.
The cleaning system and the cleaning method of the present embodiment are described below with reference to specific examples.
First test:
1. after the cleaning system is applied to a circulating activated sludge process (CASS process), the change before and after the micro-nano bubbles are applied to cleaning is observed:
(1) Comparison of the surface cleaning effect of aeration discs
As shown in fig. 3 and 4, the left side of fig. 3 is a 3# aeration disc diagram before test, the right side is a 3# aeration disc diagram after one month of test, the left side of fig. 4 is a 4# aeration disc diagram before test, and the right side is a 4# aeration disc diagram after one month of test. As can be seen from fig. 3 and 4, after the micro-nano bubbles are used for cleaning, the scale deposition on the surface and the bottom of the aeration disc is obviously reduced, the surface of the aeration disc is smoother, the aeration disc is obviously dredged, and most scale substances are removed.
(2) Wind pressure variation
As shown in fig. 5 and 6, the left side of fig. 5 is a wind pressure gauge before the micro-nano bubble generating device is installed, and the right side is a wind pressure gauge after the micro-nano bubble generating device is installed. Fig. 6 is a graph showing a wind pressure change after the micro-nano bubble generating apparatus is installed. The blockage of the aeration disc can cause the air pressure of the air pipe to rise under the same air quantity and sewage liquid level, and the air pressure change is compared before and after cleaning, so that the cleaning effect of the aeration disc can be indicated. After the micro-nano aeration micro-nano bubble generating device is used for cleaning, the air outlet of the fan has a descending trend under the condition of basically the same air quantity, and a local aeration area is formed in the original non-aeration area and gradually expands.
(2) Treatment water quantity and energy consumption change
As shown in fig. 7, fig. 7 is a graph showing the change of water volume and energy consumption before and after the micro-nano bubble generating device is applied. It can be seen from the figure that after the micro-nano bubbles are applied to cleaning, the micro-nano bubbles have high microbial activity and high oxygen transfer efficiency, the aeration energy consumption is obviously reduced, the water consumption per ton is reduced by about 10%, the water treatment quantity is also improved by about 10%, and the micro-nano bubbles cleaning technology can be proved to effectively improve the treatment capacity of the aeration tank 9 and save the energy consumption through the figure 7.
Second test:
2. after the cleaning system is applied to an alternating biological treatment tank process (UNITANK process), the front-back change after application is observed.
(1) Wind pressure variation
As shown in fig. 8 to 11, fig. 8 is a graph of variation of wind pressure on line 5 (B-tank micro-nano aeration); FIG. 9 is a graph of the variation of wind pressure on line 5 (micro-nano aeration in both pool A and pool B); FIG. 10 is a graph of the variation of wind pressure on line 5 (micro-nano aeration for both cell B and cell C); the left side of FIG. 11 shows the 5# line pre-test wind pressure gauge, and the right side shows the 3 months post-test wind pressure gauge. The test takes the recorded data of the pressure gauge during the cleaning period as a judgment basis, and achieves the wind pressure drop amplitude of the No. 5 line within the appointed time (90 days) of more than or equal to 3 percent, so that the cleaning achieves the expected effect. The trend in the wind pressure change curve graph can show that the wind pressure is in a downward trend as a whole.
(2) Comparison of aeration disc cleaning effect
As shown in fig. 12 to 15, the left side of fig. 12 is a 5#B pool aeration disc (micro-nano pool) before test, and the right side is a 6#B pool aeration disc before test; the left side of the figure 13 is a pressure gauge before cleaning the 5#B aeration disc before test, and the right side is a pressure gauge before cleaning the 6# aeration disc; FIG. 14 is a schematic illustration of a post-test 5# aeration disc pressure gauge and a post-cleaning aeration disc; FIG. 15 shows a 6# manometer and aeration disc after the test.
In the test, two aeration discs with serious blockage are selected, a small air pump is used for controlling the outlet pressure of the air pump to be 10KPa, after the two selected aeration discs are connected with the air pump, the initial pressures of the two aeration discs are respectively measured, the two aeration discs are respectively placed in a 5# pool and a 6# pool, the 6# pool is a comparison pool, and the predicted cleaning time is 20 days.
After 20 days of cleaning, the pressure of the 5# aeration disc is 3.2KPa, the pressure drops by about 0.8KPa, the scale on the surface and the bottom of the 5# aeration disc is obviously reduced, the surface of the aeration disc is smoother, the aeration disc is obviously dredged, and most scale substances are removed. The pressure of the 6# aeration disc is 4.0KPa, and the front and the back have no obvious change.
(3) Comparison of effluent quality index
As shown in fig. 16 to 18, after the micro-nano bubbles are applied to cleaning, the index of the effluent quality is obviously reduced, and the effluent quality is obviously improved. From the comparison of the data in the figure, the total ammonia nitrogen in the effluent of the No. 5 pool is about 8.49% lower than that in the No. 6 comparison pool, the total nitrogen in the No. 5 pool is about 10.85% lower than that in the No. 6 comparison pool, and the total phosphorus in the No. 5 pool is about 3.71% lower than that in the comparison pool.
The embodiments of the present invention are not limited thereto, and the present invention may be modified, substituted or combined in various other forms without departing from the basic technical spirit of the present invention, which falls within the scope of the claims, according to the above-described aspects of the present invention, using the general knowledge and conventional means of the art.
Claims (10)
1. The utility model provides a cleaning system of high-efficient washing aerator, includes aeration tank and aerator, and the aerator is arranged in the aeration tank, its characterized in that still includes the micro-nano bubble generating device who arranges in the aeration tank, and micro-nano bubble generating device includes rose box, water pump, micro-nano bubble generator and air inlet subassembly, is equipped with the holding cavity in the rose box, and the holding cavity communicates with each other with the aeration tank inside, and water pump and micro-nano bubble generator are arranged in the holding cavity, and water pump and air inlet subassembly link to each other with micro-nano bubble generator respectively, and micro-nano bubble generator's export communicates with each other with the aeration tank inside.
2. The cleaning system for efficiently cleaning an aerator of claim 1, wherein the micro-nano bubble generating device further comprises a bubble water releaser, an inlet of the bubble water releaser is connected with an outlet of the micro-nano bubble generator, an outlet of the bubble water releaser is arranged outside the filter box, and an outlet of the bubble water releaser is arranged in the aeration tank.
3. The cleaning system for efficiently cleaning an aerator according to claim 1 or 2, wherein the air inlet assembly comprises an air inlet pipeline, the air inlet pipeline is connected with the micro-nano bubble generator, and an air inlet valve and a negative pressure meter are arranged on the air inlet pipeline.
4. The cleaning system for efficiently cleaning an aerator according to claim 1 or 2, wherein the filter box is provided with a plurality of filter holes, and the accommodating cavity inside the filter box is communicated with the inside of the aeration tank through the filter holes.
5. The cleaning system for efficiently cleaning an aerator according to claim 1, wherein the aerator is disposed at the bottom of the aeration tank, and the aerator is connected to the blower via a ventilation pipe.
6. The cleaning method for efficiently cleaning the aerator is characterized by comprising the following steps of:
s1, acquiring sewage in an aeration tank by a micro-nano bubble generation device;
s2, the micro-nano bubble generating device acquires gas, the gas and the sewage are fully mixed, and a high-speed vortex is formed in a high vacuum state to obtain micro-nano bubbles;
s3, releasing the micro-nano bubbles into an aeration tank loaded with the aerator.
7. The method for cleaning an aerator with high efficiency according to claim 6, wherein the step S3 specifically includes:
the micro-nano bubble generator of the micro-nano bubble generating device conveys the gas-liquid mixed water containing micro-nano bubbles to the bubble water releaser;
the bubble water releaser releases the gas-liquid mixed water into an aeration tank provided with an aerator.
8. The method for cleaning an aerator with high efficiency according to claim 6, wherein the aeration tank is filled with the gas-liquid mixture water containing micro-nano bubbles, and the micro-nano bubbles can weaken the binding force of the sediment on the aerator and the substrate surface through permeation relaxation and air floatation after entering the aerator.
9. The method for cleaning an aerator with high efficiency according to claim 6, wherein the air inlet assembly is provided with an air inlet valve for controlling the amount of air entering the micro-nano bubble generator and a negative pressure meter for measuring the pressure value of the inhaled air.
10. The method for cleaning an aerator with high efficiency according to claim 6, wherein the micro-nano bubble generator has a high vacuum condition of-0.09 MPa or more.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898839.1A CN113578845A (en) | 2021-08-06 | 2021-08-06 | Cleaning method for micro-nano bubble cleaning aerator |
| CN2021108988391 | 2021-08-06 |
Publications (1)
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