CN110818155B - Ultrasonic composite water treatment equipment - Google Patents

Ultrasonic composite water treatment equipment Download PDF

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Publication number
CN110818155B
CN110818155B CN201911238608.7A CN201911238608A CN110818155B CN 110818155 B CN110818155 B CN 110818155B CN 201911238608 A CN201911238608 A CN 201911238608A CN 110818155 B CN110818155 B CN 110818155B
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ultrasonic
section
water
wall
ultrasonic treatment
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CN110818155A (en
Inventor
陈永昌
熊成雷
马重芳
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Beijing University of Technology
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Beijing University of Technology
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02Softening water by precipitation of the hardness
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention provides ultrasonic composite water treatment equipment, which achieves the aim of reducing the hardness of water by combining the ultrasonic treatment technology with centrifugal separation action, precipitation action and filtration action. The invention consists of an ultrasonic treatment section, a sedimentation section, a purification section and a set of ultrasonic generating devices. The ultrasonic generating device is arranged at the top of the ultrasonic treatment section cylinder; the inner wall of the ultrasonic treatment section is provided with double-line coarse threads, the upper part of the cylindrical wall of the ultrasonic treatment section is provided with a water inlet, the bottom of the sedimentation section is provided with a sewage outlet, the purification section is internally provided with a spoiler and a filter cavity, and the top end of the purification section is provided with a water outlet. The invention utilizes ultrasonic treatment technology to promote precipitation of scale-causing components in hard water, and utilizes centrifugal action, precipitation action and filtration action to separate scale, thereby effectively reducing the hardness of water. The invention has no rotating parts, simple operation and obvious effect, and can be widely applied to the fields of metallurgy, power generation, chemical industry, environmental protection and the like.

Description

Ultrasonic composite water treatment equipment
Technical Field
The invention relates to water treatment equipment, in particular to water treatment equipment for reducing water hardness by utilizing an ultrasonic treatment technology.
Background
In the industrial production process, the heat transfer efficiency is seriously affected by the internal scaling problems of various water-using equipment such as heat exchangers, boilers and the like, and serious energy waste and economic loss are caused. These scales are mainly crystalline scales, i.e., inorganic scales generated by chemical reactions of scale-causing components such as calcium ions and magnesium ions in water. If water with certain hardness is subjected to technical pretreatment, easily-scaling components are removed, the hardness of the water is effectively reduced, and adverse effects caused by equipment scaling are avoided. The existing scale inhibition water treatment technology mainly comprises chemical and physical methods. The chemical scale inhibition method mainly comprises a softening method, an acid treatment method, a carbonization stabilization method, an addition of a scale inhibitor and the like, but the chemical method has the defects of high cost, single scale inhibition effect, short time, serious equipment corrosion, easy environmental pollution and the like. The physical scale inhibition method mainly comprises electric, magnetic and ultrasonic treatment technologies and the like, and has the characteristics of remarkable effect, simplicity in use, low cost and the like. The equipment realizes the scale inhibition effect by utilizing the ultrasonic treatment technology.
During the liquid propagation process, ultrasonic waves can generate various effects including cavitation effect, mechanical effect, thermal effect, activation effect and the like, and influence the microscopic properties of various molecules and ions of hard water, thereby influencing the crystallization process of scale-causing components. By ultrasonic cavitation effect is meant a series of dynamic processes of cavitation bubbles. The ultrasonic wave with higher intensity passes through the liquid, when the waveform of the ultrasonic wave is in a negative pressure period and the negative pressure value is higher than the internal static pressure of the liquid, cavitation bubbles in the liquid grow rapidly, and when the ultrasonic wave enters the next positive pressure period, the grown cavitation bubbles collapse in a very short time due to pressure change. The process of collapse of cavitation bubbles is accompanied by high temperature and pressure, and since collapse occurs in a very short time and in a very small space, the rate of temperature change in the process is very high, and is accompanied by the generation of intense shock waves and powerful microjets. The mechanical effect is a phenomenon that a shearing force is generated between the container wall and the dirt adhering to the container wall due to the difference in propagation speed of the ultrasonic wave between the two, and the shearing force is favorable for peeling the dirt adhering to the container wall. The thermal effect is macroscopically manifested as an increase in the temperature of the liquid, since vibrations caused by ultrasound can increase the kinetic and potential energy of the molecules in the liquid. The activation effect is generated along with the cavitation effect, and the high-temperature and high-pressure environment generated when the cavitation bubbles collapse can enable water molecules to be cracked to generate hydroxyl free radicals, and the hydroxyl free radicals can generate hydrogen peroxide in the solution, so that the activation capability of the solution is improved.
Under the combined influence of the above effects, the nucleation induction period of the scale-causing component is shortened, the generation of tiny crystal nuclei is promoted, the nucleation and growth at the wall surface are inhibited, and the precipitation and suspension of the scale-causing component in the hard water in the water are promoted. The precipitated crystals are further separated from the water, so that the aim of reducing the water hardness can be fulfilled.
Disclosure of Invention
The invention aims to reduce the hardness of industrial water by utilizing an ultrasonic water treatment technology, eliminate the adverse effect caused by scaling phenomenon in water equipment and keep the stable operation of the industrial equipment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an ultrasonic composite water treatment device comprises an ultrasonic generating device, an ultrasonic treatment section, a sedimentation section and a purification section. The ultrasonic generating device consists of an ultrasonic generator, an ultrasonic transducer, an amplitude transformer and a tool head; the ultrasonic treatment section is formed by splicing a cylindrical barrel and a round platform barrel, the cylindrical barrel is arranged on the upper side, the round platform barrel is arranged on the lower side, the small bottom surface of the round platform barrel faces upwards, a water inlet pipeline is introduced into the top position of the cylindrical barrel wall, and a water outlet is formed in the cylindrical barrel wall; the sedimentation section is formed by splicing a cylindrical barrel and a conical barrel, the cylindrical barrel is arranged on the upper side, the conical barrel is arranged on the lower side, a sewage outlet is arranged at the central position of the bottom of the conical barrel, and a valve is arranged on a sewage pipeline connected with the sewage outlet; the purifying section is a vertical pipeline, the bottom of the pipeline is a cone, the upper part of the pipeline is a cylinder, the central position of the bottom end is provided with a water inlet, the central position of the top end is provided with a water outlet, and a valve is arranged on a water outlet pipeline connected from the water outlet. And a inclined pipe is used for connecting the water outlet of the ultrasonic treatment section and the water inlet of the purification section.
In the ultrasonic composite water treatment equipment, the water inlet pipeline of the ultrasonic treatment section is led into the cylinder body along the tangential direction of the wall of the cylinder, so that water flows spirally under the centrifugal action after entering the cylinder.
In the ultrasonic composite water treatment equipment, the inner wall of the cylindrical barrel of the ultrasonic treatment section is provided with double-line coarse threads, the pitch of the threads is equal to the inner diameter of the water inlet pipe, and the lead is 2 times of the inner diameter of the water inlet pipe. Two thread lines and the cylinder wall enclose a thread groove, the thread groove is positioned at the water inlet position at the beginning, the water inlet is guided, and the rotational flow is strengthened.
In the above ultrasonic wave generating device, the ultrasonic wave generator is placed in a frame welded on the top of the cylinder; the ultrasonic transducer, the amplitude transformer and the tool head are sequentially connected into an ultrasonic rod through fastening bolts, the ultrasonic rod is connected with the ultrasonic treatment section through a flange plate and is arranged at the central position of the top of the cylinder, the ultrasonic transducer is arranged outside the cylinder, the amplitude transformer penetrates through the top of the cylinder, and the tool head is arranged in the cylinder.
In the ultrasonic wave generating device, vibration damping rubber is filled between the amplitude transformer and the cylinder top of the ultrasonic wave treatment section.
In the ultrasonic wave generating device, the tool head is in a stepped shape and can be formed by splicing a round table and a cylinder, the splicing sequence is that the cylinder is connected with the small bottom surface of the round table, and the large bottom surface of the round table is connected with the next cylinder, so that the tool head is spliced in sequence. The conical surface angle of the round table is 45 degrees, the diameter of the large bottom surface of the round table is 2 times that of the small bottom surface, the height of the round table is equal to that of the cylinder, and the area of the cylinder bottom is equal to that of the small bottom surface of the round table. Preferably, the tool head is made of titanium alloy. The stepped tool head can strengthen the radial propagation ultrasonic sound intensity by utilizing the refraction effect of the inclined surface of the round table on the ultrasonic wave, so that the ultrasonic field distribution in the cylinder is more uniform.
In the ultrasonic composite water treatment equipment, a window is further formed in the wall surface of the circular truncated cone of the ultrasonic treatment section.
In the ultrasonic composite water treatment equipment, the ultrasonic treatment section and the sedimentation section are connected up and down through a set of flange plates. The cone part of the ultrasonic treatment section has the capacity-increasing and speed-reducing functions on water flow due to the increase of the inner diameter, and the low-speed water flow is favorable for the precipitation of dirt particles in the precipitation section.
In the ultrasonic composite water treatment equipment, two lantern rings with protruding spokes are welded on the outer wall of the purification section, and the spokes are welded with the outer wall of the ultrasonic treatment section.
In the ultrasonic composite water treatment equipment, the lower half part in the cylindrical barrel of the purifying section is provided with two groups of spoilers which are symmetrically and alternately arranged, the distance between the spoilers on the same side is 100 mm, the spoilers incline downwards and form an included angle of 70 degrees with the barrel wall, and the outer edge of each spoiler extends to the axis of the purifying section. The inclined flow blocking plates can further reduce the flow velocity of water, and dirt particles can fall back to the sedimentation section along the inclined tube.
In the ultrasonic composite water treatment equipment, the upper half part in the cylindrical barrel of the purifying section is provided with a filter cavity, the filter cavity is composed of a barrel wall and two porous partition plates in the barrel, and the cavity is filled with fiber bundle filter materials. The wall of the filter cavity is provided with a cavity door with a handle, the inner side of the cavity door is provided with a sealing ring, the cavity door is connected with the wall of the filter cavity through a group of buckles, and filter materials can be replaced by taking down the cavity door through opening the buckles.
In the ultrasonic composite water treatment equipment, the water outlet pipeline at the top of the purification section is connected through a set of flange.
Under the combined action of the water inlet pipe connected in the tangential direction and the threads on the inner wall of the cylinder, the inflow water forms a rotational flow in the ultrasonic treatment section; the ultrasonic generator outputs an electric signal, the electric energy is converted into mechanical energy through the ultrasonic transducer, the amplitude is regulated through the amplitude transformer, and the mechanical wave is transmitted to the water through the tool head; under the action of ultrasound, hard water separates out scale, and under the centrifugal action of rotational flow, the scale gathers towards the wall surface and moves downwards at the same time; due to the capacity-increasing and speed-reducing effects, the water flow speed is gradually reduced, and finally scale particles are accumulated and deposited in the precipitation section; and part of the treated water overflows to the purifying section along the inclined tube, the flow speed of the water is further lower due to the flow blocking effect of the flow blocking plate, secondary sedimentation is carried out, scale is precipitated to the sedimentation section along the inclined tube, the scale which cannot be precipitated is intercepted by the filter cavity positioned at the upper part of the purifying section, and finally cleaner water flows out from the water outlet pipe.
The invention has the beneficial effects that the ultrasonic wave action promotes the precipitation of scale-causing ions in hard water to form a large number of scale particles, and the water hardness can be effectively reduced. The cyclone water inlet is realized under the condition of no rotating part, so that the deposition of scale on the wall surface is avoided, and the separation effect of scale particles is enhanced. The flow rate of water is reduced by the capacity-increasing and speed-reducing functions, which is favorable for the precipitation of scale particles in water. The inclined flow blocking plate and the filter cavity in the purifying section can further purify water quality, and ensure relatively clean water outflow. Under the given control parameters, the equipment is stable in operation, remarkable in water treatment effect, safe in use, simple in operation and free from adverse effects of corrosion to equipment, environmental pollution and the like, and the functions of crystallization, descaling, separation, purification and the like are integrated.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic diagram of a tool head;
In FIG. 1, the tool head, 2, horn, 3, ultrasonic transducer, 4, first flange, 5, ultrasonic generator, 6, frame, 7, first valve, 8, inlet tube, 9, internal wall threads, 10, ultrasonic treatment section, 11, window, 12, second flange, 13, precipitation section, 14, blow down pipe, 15, second valve, 16, angled pipe, 17, flow blocking plate, 18, first collar, 19, purge section, 20, first baffle, 21, chamber door, 22, handle, 23, snap, 24, filter chamber, 25, second baffle, 26, second collar, 27, third flange, 28, third valve, 29, outlet pipe.
Detailed Description
The invention will be described in detail below with reference to the attached drawings:
As shown in fig. 1, the invention consists of an ultrasonic treatment section 10, a sedimentation section 13, a purification section 19 and a set of ultrasonic generating devices, wherein the ultrasonic generating devices comprise an ultrasonic generator 5, an ultrasonic transducer 3, a luffing rod 2 and a tool head 1. The top of the ultrasonic treatment section 10 is welded with a frame 6 in which the ultrasonic generator 5 is placed. The ultrasonic transducer 3, the amplitude transformer 2 and the tool head 1 form an ultrasonic rod, the ultrasonic rod is connected with the ultrasonic treatment section 10 through the first flange 4, wherein the ultrasonic transducer is arranged outside the cylinder body of the ultrasonic treatment section 10, the amplitude transformer 2 penetrates through the cylinder top, and the tool head 1 is arranged in the cylinder. The ultrasonic treatment section 10 and the sedimentation section 13 are connected by a second flange 12. The ultrasonic treatment section 10 and the cleaning section 19 are connected by a diagonal pipe 16. Two groups of inclined spoilers 17 are symmetrically and alternately arranged at the lower half part in the cylindrical barrel of the purifying section 19, a filter cavity 24 is formed by a first partition board 20, a second partition board 25 and the barrel wall at the upper half part, a cavity door 21 with a handle 22 is arranged on the cavity wall, the cavity door 21 is connected with the barrel wall through a group of buckles 23, and the cavity door 21 can be taken down to replace filter materials by opening the buckles 23.
Under the combined action of the water inlet pipe 8 connected in the tangential direction and the threads 9 on the inner wall of the cylinder, the inflow water forms a right-handed rotational flow in the ultrasonic treatment section 10. The ultrasonic generator 5 outputs an electrical signal having a certain frequency, converts the electrical energy into mechanical energy via the ultrasonic transducer 3, adjusts the amplitude by the horn 2, and transmits mechanical waves mainly from the tool head 1 to the water. Under the action of ultrasonic waves, the hard water is separated out of the scale, and the scale gathers towards the wall surface and moves downwards under the centrifugal action of rotational flow. During the process, the water flow speed gradually decreases due to the capacity increasing and speed decreasing effects, and finally, scale particles are accumulated and deposited in the precipitation section 13. Part of the treated water overflows to the purifying section 19 along the inclined tube 16, the flow velocity of the water is further lower due to the choked flow effect of the choked flow plate 17, secondary sedimentation can be performed, scale is precipitated back to the sedimentation section 13 along the inclined tube 16, the filter cavity positioned at the upper part of the purifying section 19 intercepts the scale which cannot be precipitated, and finally cleaner water flows out from the water outlet pipe 29. The sedimentation condition in the sedimentation section 13 is observed through the window 11, and the second valve 15 can be opened when needed, so that the scale is discharged from the sewage discharge pipe 14. In particular, if the present apparatus is enlarged to accommodate a larger amount of treated water, the number of tool heads 1 should be increased, and when the number of tool heads 1 is greater than 1, they should be arranged symmetrically about the ultrasonic treatment section axis as a center.

Claims (7)

1. The utility model provides an ultrasonic wave compound water treatment facilities, including ultrasonic treatment section (10), deposit section (13), purifying section (19) and a set of ultrasonic generating device, wherein, ultrasonic generating device includes ultrasonic generator (5), ultrasonic transducer (3), become width of cloth pole (2) and instrument head (1), ultrasonic transducer (3), become the ultrasonic rod through connecting of width of cloth pole (2) and instrument head (1), the ultrasonic rod passes through first flange (4) to be connected at ultrasonic treatment section (10) top central authorities, and instrument head (1) stretches into inside ultrasonic treatment section (10), top position at ultrasonic treatment section (10) wall is followed tangential direction and is gone into inlet tube (8), bottom central point in depositing section (13) is put and is equipped with blow off pipe (14), be equipped with second valve (15) on the blow off pipe, ultrasonic treatment section (10) are connected by second flange (12) with precipitating section (13), ultrasonic treatment section (10) and purifying section (19) are connected through inclined tube (16), be provided with two sets of choked flow boards (17) and a filter chamber (24) in purifying section (19), central point is equipped with outlet pipe (29) top position on the third water outlet pipe (29);
The inner wall of the cylindrical barrel of the ultrasonic treatment section (10) is provided with double-line coarse threads (9), the pitch is equal to the inner diameter of the water inlet pipe (8), the lead is 2 times of the inner diameter of the water inlet pipe (8), two thread lines and the barrel wall enclose a thread groove, and the thread groove is positioned at the water inlet position at the beginning;
The lower half part in the cylindrical barrel of the purifying section (19) is provided with two groups of spoilers (17), the spoilers (17) are symmetrically and alternately arranged, the spoilers (17) form an included angle of 70 degrees with the barrel wall in a downward inclined mode, and the outer edges of the spoilers (17) extend to the axis of the purifying section (19).
2. The ultrasonic composite water treatment equipment according to claim 1, characterized in that the ultrasonic treatment section (10) is formed by splicing a cylindrical barrel and a round platform barrel, the cylindrical barrel is arranged at the upper part, the round platform barrel is arranged at the lower part, and the small bottom surface of the round platform barrel is arranged at the upper part.
3. The ultrasonic composite water treatment equipment according to claim 1, characterized in that the upper part in the cylindrical barrel of the purifying section (19) is provided with a filter cavity (24), the filter cavity (24) is formed by a barrel wall and two porous partition boards in the barrel, the cavity is filled with fiber bundle filter materials, the barrel wall of the filter cavity (24) is provided with a cavity door (21) with a handle (22), the inner side of the cavity door (21) is provided with a sealing ring, and the cavity door (21) is connected with the barrel wall through a group of buckles (23).
4. The ultrasonic composite water treatment equipment according to claim 1, characterized in that the tool head (1) is in a stepped shape and is formed by splicing a round table and a cylinder, the splicing sequence is that the cylinder is connected with a small bottom surface of the round table, the large bottom surface of the round table is connected with the next cylinder, the conical surface angle of the round table is 45 degrees, the diameter of the large bottom surface of the round table is 2 times that of the small bottom surface, the height of the round table is equal to that of the cylinder, and the bottom area of the cylinder is equal to that of the small bottom surface of the round table.
5. An ultrasonic composite water treatment device according to claim 1, characterized in that the bottom of the sedimentation section (13) is of inverted conical shape.
6. Ultrasonic composite water treatment equipment according to claim 1, characterized in that a window (11) is provided on the wall of the circular truncated cone wall of the ultrasonic treatment section (10).
7. A method of using the ultrasonic composite water treatment apparatus of claim 1, wherein: under the combined action of the water inlet pipe connected in the tangential direction and the threads on the inner wall of the cylinder, the inflow water forms a rotational flow in the ultrasonic treatment section; the ultrasonic generator outputs an electric signal, the electric energy is converted into mechanical energy through the ultrasonic transducer, the amplitude is regulated through the amplitude transformer, and the mechanical wave is transmitted to the water through the tool head; under the action of ultrasound, hard water separates out scale, and under the centrifugal action of rotational flow, the scale gathers towards the wall surface and moves downwards at the same time; due to the capacity-increasing and speed-reducing effects, the water flow speed is gradually reduced, and finally scale particles are accumulated and deposited in the precipitation section; and part of the treated water overflows to the purifying section along the inclined tube, the flow speed of the water is further reduced due to the flow blocking effect of the flow blocking plate, secondary sedimentation is carried out, the scale is precipitated to the sedimentation section along the inclined tube, the scale which cannot be precipitated is intercepted by the filter cavity positioned at the upper part of the purifying section, and finally cleaner water flows out from the water outlet pipe.
CN201911238608.7A 2019-12-06 2019-12-06 Ultrasonic composite water treatment equipment Active CN110818155B (en)

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Application Number Priority Date Filing Date Title
CN201911238608.7A CN110818155B (en) 2019-12-06 2019-12-06 Ultrasonic composite water treatment equipment

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Application Number Priority Date Filing Date Title
CN201911238608.7A CN110818155B (en) 2019-12-06 2019-12-06 Ultrasonic composite water treatment equipment

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CN110818155B true CN110818155B (en) 2024-06-04

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200212298Y1 (en) * 2000-09-01 2001-02-15 아진기공주식회사 Electron field water treatment device with a ultrasonic generator
KR200398453Y1 (en) * 2005-07-18 2005-10-13 이동거 The activation device of waters
CN101108384A (en) * 2007-08-16 2008-01-23 刘利华 Digital type ultrasound wave descaling equipment
CN106336051A (en) * 2016-04-08 2017-01-18 宁波工程学院 Recirculated cooling water strengthening treatment apparatus and method
CN107522296A (en) * 2017-10-18 2017-12-29 上海辨洁环保科技有限公司 Full-automatic circulation water dirt purifier
CN108339789A (en) * 2018-03-01 2018-07-31 上海毓风机电设备有限公司 A kind of cooling tower water-collecting tray automatic cleaning system and its cleaning method
CN211311186U (en) * 2019-12-06 2020-08-21 北京工业大学 Ultrasonic composite water treatment equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200212298Y1 (en) * 2000-09-01 2001-02-15 아진기공주식회사 Electron field water treatment device with a ultrasonic generator
KR200398453Y1 (en) * 2005-07-18 2005-10-13 이동거 The activation device of waters
CN101108384A (en) * 2007-08-16 2008-01-23 刘利华 Digital type ultrasound wave descaling equipment
CN106336051A (en) * 2016-04-08 2017-01-18 宁波工程学院 Recirculated cooling water strengthening treatment apparatus and method
CN107522296A (en) * 2017-10-18 2017-12-29 上海辨洁环保科技有限公司 Full-automatic circulation water dirt purifier
CN108339789A (en) * 2018-03-01 2018-07-31 上海毓风机电设备有限公司 A kind of cooling tower water-collecting tray automatic cleaning system and its cleaning method
CN211311186U (en) * 2019-12-06 2020-08-21 北京工业大学 Ultrasonic composite water treatment equipment

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