DE212014000250U1 - Microelectrolysis device and integrated water treatment device - Google Patents

Abstract

A microelectrolysis apparatus, characterized by comprising an anode assembly, a cathode assembly, an attachment chamber and a decalcification assembly, wherein anodes of the anode assembly and cathodes of the cathode assembly are staggered on the attachment chamber; wherein the descaling assembly is disposed on the anode assembly, on the cathode assembly or on the attachment chamber.

Description

TECHNICAL AREA

The invention relates to the field of water treatment, in particular a microelectrolysis device for treating circulating cooling water and an integrated water treatment device for treating circulating cooling water without adding chemical substances.

BACKGROUND

In the existing industrial treatment of circulating water, chemicals (such as a scale inhibitor, a corrosion inhibitor, and the like) are added to the circulating water to prevent calcium ions from being deposited in piping, thereby causing problems such as limescale and corrosion to dissolve circulating water in pipelines. This method requires a large amount of chemicals to be used, resulting in pollution of the environment, especially water reutilization.

Therefore, a problem to be solved by those skilled in the art is to provide a novel microelectrolysis apparatus and method for treating circulating cooling water without the addition of chemicals.

SHORT VERSION

To overcome the above drawbacks, an object of the invention is to provide a novel microelectrolysis apparatus and method for conditioning circulating cooling water.

The technical measures of the invention are as follows:
A microelectrolysis apparatus includes an anode assembly, a cathode assembly, an attachment chamber, and a decalcification assembly, wherein anodes of the anode assembly and cathodes of the cathode assembly are staggered on the attachment chamber;
wherein the descaling assembly is disposed on the anode assembly, on the cathode assembly or on the attachment chamber.

Preferably, the cultivation chamber has a first rectangular flange, a second rectangular flange, a first chamber component, a second chamber component, an inlet tube and an outlet tube; the first rectangular flange, the second rectangular flange, the first chamber component and the second chamber component form a frame of the mounting chamber; two ends of the first chamber member are fixed to the first rectangular flange and to the second rectangular flange and two ends of the second chamber member are fixed to the first rectangular flange and to the second rectangular flange, respectively; and the inlet tube and the outlet tube are arranged symmetrically, one attached to the first chamber member and the other secured to the second chamber member.

Preferably, the anode assembly comprises an anode steel plate, a titanium plate, a plurality of anode plates, an anode junction wall, and guide rails; the anode steel plate is arranged parallel to the titanium plate and firmly connected thereto; the plurality of anode plates are attached to the titanium plate; the guide rails are arranged on upper surfaces and on lower surfaces of the anode plates; the plurality of anode plates are parallel to each other; the anode connection wall is attached to the anode steel plate; and the anode plate is perpendicular to the titanium plate.

Preferably, the cathode assembly comprises a cathode steel plate, a plurality of cathode plates, and a cathode connection wall; the cathode plates are fixed vertically to the cathode steel plate; the cathode connection wall is attached to the cathode steel plate; the plurality of cathode plates are parallel to each other; and the cathode plates are perpendicular to the cathode steel plate.

Preferably, an inter-electrode gap between adjacent anode plate and cathode plate is less than 50 mm.

Preferably, the decalcifier assembly is a scraper configured to process limescale deposits on the anode assembly.

Preferably, the microelectrolysis device further comprises a cylinder; the cylinder is firmly connected to the cathode assembly; the cylinder presses and fixes the cathode assembly to a frame of the attachment chamber; and the cylinder is configured to drive the cathode assembly to move.

Preferably, the cathode assembly and the anode assembly are each isolated from and sealed to the frame of the mounting chamber.

Preferably, the decalcifying assembly comprises ultrasonic vibrators;
the ultrasonic vibrators are disposed on the anode assembly and / or on the cathode assembly; and are directions of ultrasonic waves generated during operation of the ultrasonic vibrator, parallel to surfaces of electrodes.

Preferably, the cathode steel plate is grooved in the cathode assembly; the ultrasonic vibrators are arranged in the grooves; and a thickness of bottoms of the grooves is in a range of 2 mm to 3.5 mm.

In this connection, a control method for the above microelectrolysis apparatus, which as such is not claimed, may be performed; the method comprising the steps of: when a descaling condition is met, stopping an operation of the microelectrolyzer; Descaling in the off state and then restarting the microelectrolysis device.

Here, the descaling condition may be that a thickness of limescale on cathode plates of the cathode assembly is greater than 60% of an inter-electrode gap between the adjacent anode plate and the cathode plate.

Here, the descaling condition may be that a concentration multiple factor K of circulating water deviates from a range of 8 ± 4.

Here, the descaling condition may be that the pipe pressure drop ΔP of the microelectrolyzer is larger than 10 kPa.

Here, the descaling condition may be that the cell voltage V of the microelectrolyzer increases by more than 500 mV.

Accordingly, the present invention further provides an integrated water treatment apparatus comprising the above microelectrolysis apparatus;
which further comprises a power supply, a control system, valves and a detector;
wherein the power supply is configured to supply power to the microelectrolysis apparatus;
the control system is electrically connected to the valves and the detector, respectively, to control a program so that it runs on the basis of signals and data information received from the detector;
an inlet pipe of the microelectrolysis apparatus is connected to a circulation water inlet pipe; and an outlet pipe of the microelectrolysis apparatus is connected to a fresh water outlet pipe.

Preferably, the detector comprises a calcification amount detecting unit; and the limescale amount detecting unit is configured to detect an amount of limescale on cathode plates of the microelectrolyzer.

Preferably, the detector comprises a concentration multiple factor detection unit configured to detect a concentration multiplier of circulating water.

Preferably, the detector comprises a tubing pressure sensing unit configured to sense the tubing pressure of the integrated water treatment device.

Preferably, the detector comprises a cell voltage detection unit configured to detect the cell voltage of the microelectrolysis device.

Preferably, the valves include a circulation water inlet valve, a fresh water outlet valve, and a waste water drain valve;
wherein the circulation water inlet valve is installed in the circulation water inlet piping; the fresh water outlet valve is installed on the fresh water outlet pipe; and the waste water drain valve is installed on the waste water discharge pipe.

Preferably, the detector further comprises a liquid level detection unit configured to detect a liquid level of the microelectrolysis device.

Preferably, the circulation water inlet piping is equipped with a flow meter.

Preferably, the integrated water treatment device further comprises an electrolyte inlet filter; and the circulation water enters the microelectrolysis device after being treated by the electrolyte inlet filter.

Preferably, the integrated water treatment device is integrally movable and further comprises a base; wherein the power supply, the control system, the valves and the detector of the microelectrolysis device are all arranged on the base.

In this connection, a circulating cooling water treatment method, which as such is not claimed, may be carried out using the above microelectrolysis apparatus, and the method further comprises the steps of:
Connecting the anode terminal wall and the cathode terminal wall to a positive electrode of the power supply when the microelectrolysis apparatus is in use, at which moment the circulating cooling water enters the microelectrolysis apparatus and the circulating cooling water flows out of the microelectrolysis apparatus after being stored in the microelectrolysis apparatus was electrolyzed; after limescale deposits of a certain thickness have accumulated on surfaces of the cathode plates of the cathode assembly after a period of use, performing a descaling procedure for the microelectrolysis device; and restarting the microelectrolysis device after the microelectrolysis device has been decalcified.

• (1) Gemäß der Mikroelektrolysevorrichtung, der integrierten Wasseraufbereitungsvorrichtung und dem Zirkulationskühlwasseraufbereitungsverfahren der vorliegenden Erfindung wird in dem Zirkulationskühlwasseraufbereitungssystem eine Elektrolysetechnologie angewendet, müssen während der Aufbereitung keine chemischen Stoffe hinzugefügt werden; ist die Investition gering, sind Betriebsabläufe einfach und werden Umweltprobleme, die durch Verwendung chemischer Stoffe hervorgerufen werden, vermieden.
• (2) Die Elektrolysezelle in der vorliegenden Erfindung weist eine rechteckige Struktur auf, welche, im Vergleich mit einer runden Zelle, die Kathodenfläche je Volumeneinheit erhöht und unter der Bedingung der gleichen Menge von Ablagerungen eine geringere Standfläche belegt.
• (3) Bei der vorliegenden Erfindung ist die Kathodenbaugruppe, welche die Kathodenplatten und die Kathodenstahlplatte aufweist, aus rostfreiem Stahl oder Karbonstahl hergestellt. Die Seitenplatte der Anodenbaugruppe ist eine Karbonstahlplatte oder eine Edelstahlplatte, wobei eine Titanplatte an der Innenwand der Seitenplatte befestigt ist. Die Anodenplatten sind korrosionsbeständige Titanplatten. Da es schwierig ist, eine Titanplatte an eine Edelstahlplatte oder an eine Karbonstahlplatte zu schweißen, ist die Innenwand der Seitenplatte mit einer Titanplatte versehen, so dass die Anodenplatten, die aus Titan hergestellt sind, leicht an der mit der Seitenplatte befestigten Titanplatte verschweißt und befestigt werden können. Alternativ ist die Anodenplatte ein Anodentitangitter mit vielen Löchern hierin, oder, um eine bessere Korrosionsbeständigkeit aufzuweisen, ist die Anodenplatte eine Titanplatte oder ein Titangitter, welches mit Oxiden, wie etwa Rutheniumoxid und dergleichen oxidiert ist. Die Führungsleisten sind jeweils an oberen Oberflächen und unteren Oberflächen der Anodenplatten angeordnet, wodurch sichergestellt ist, dass der Abstand zwischen der Kathodenplatte und der Anodenplatte festgelegt ist, was sicherstellt, dass die Kathodenplatten und die Anodenplatten parallel zueinander sind, und was sicherstellt, dass der Elektrodenzwischenabstand durch die langfristigen Einflüsse von Wasserströmung und Elektrolyse nicht verändert werden wird.
• (4) Die Mikroelektrolysevorrichtung der vorliegenden Erfindung weist einen einfachen Aufbau auf, und der Schaber der Entkalkungsbaugruppe und die durch die Entkalkungsbaugruppe erzeugten Ultraschallwellen weisen signifikante Entkalkungswirkungen auf. Beim Entkalken mit dem Schaber reicht die Entkalkungswirkung bis auf mehr als 80%; bei Entkalkung durch die Ultraschallwellen ist die Dicke der Kalkablagerungen geringer als 30 mm und erreicht die Entkalkungswirkung bis zu mehr als 80% nach 30 Minuten der Entkalkung.

The advantageous effects of the present invention include:

• (1) According to the microelectrolysis apparatus, the integrated water treatment apparatus and the circulation cooling water treatment method of the present invention, in the circulation cooling water treatment system, electrolysis technology is used, no chemicals need to be added during the treatment; if investment is low, operations are easy and environmental problems caused by the use of chemicals are avoided.
• (2) The electrolytic cell in the present invention has a rectangular structure which, as compared with a round cell, increases the cathode area per unit volume and occupies a smaller footprint under the condition of the same amount of deposits.
• (3) In the present invention, the cathode assembly comprising the cathode plates and the cathode steel plate is made of stainless steel or carbon steel. The side plate of the anode assembly is a carbon steel plate or a stainless steel plate, with a titanium plate attached to the inner wall of the side plate. The anode plates are corrosion resistant titanium plates. Since it is difficult to weld a titanium plate to a stainless steel plate or a carbon steel plate, the inner wall of the side plate is provided with a titanium plate, so that the anode plates made of titanium are easily welded and fixed to the titanium plate attached to the side plate can. Alternatively, the anode plate is an anode thinner with many holes therein, or, for better corrosion resistance, the anode plate is a titanium plate or a titanium grid which is oxidized with oxides such as ruthenium oxide and the like. The guide rails are respectively disposed on upper surfaces and lower surfaces of the anode plates, thereby ensuring that the distance between the cathode plate and the anode plate is fixed, which ensures that the cathode plates and the anode plates are parallel to each other, and ensures that the inter-electrode gap will not be changed by the long-term effects of water flow and electrolysis.
• (4) The microelectrolysis apparatus of the present invention has a simple structure, and the scraper of the descaling assembly and the ultrasonic waves generated by the descaling assembly have significant descaling effects. When descaling with the scraper, the descaling effect reaches more than 80%; when decalcified by the ultrasonic waves, the thickness of the limescale deposits is less than 30 mm and reaches the descaling effect up to more than 80% after 30 minutes of decalcification.

BRIEF DESCRIPTION OF THE DRAWINGS

1 Fig. 10 is an overall schematic view of the microelectrolysis apparatus of the present invention;

2 is a schematic front view showing the cultivation chamber of the microelectrolysis apparatus of 1 illustrated;

3 is a schematic side view of the cultivation chamber of 2 ;

4 FIG. 12 is a schematic front view of the anode assembly of the microelectrolysis apparatus of FIG 1 .

5 is a schematic side view of the anode assembly of 4 ;

6 FIG. 12 is a schematic front view showing the cathode assembly of the microelectrolysis apparatus of FIG 1 illustrated;

7 is a schematic side view of the cathode assembly of 6 ;

8th Fig. 10 is an overall schematic view of an example of the scraper of the present invention;

9 Fig. 10 is an overall schematic view of the integrated water treatment apparatus according to an embodiment of the present invention;

10 and 11 are graphs for embodiment 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In order to clarify the objects, technical measures and advantages of the microelectrolysis apparatus and control method thereof, the integrated water treatment apparatus and the circulation cooling water treatment method, the present invention will be further described with the accompanying drawings and embodiments in detail.

It should be noted that various embodiments and the features therein can be combined under the condition of consistency.

With reference to 1 to 7 the present invention provides a microelectrolysis apparatus 1 , which is mainly used for the treatment of circulating cooling water, with an anode assembly 100 , a cathode assembly 200 , a cultivation chamber 300 and a descaling assembly, wherein anodes of the anode assembly 100 and cathodes of the cathode assembly 200 in a staggered manner at the cultivation chamber 300 are arranged and the decalcifying assembly is disposed on the cathode assembly, on the anode assembly or on the mounting chamber.

In this embodiment, the microelectrolysis apparatus mainly employs an electrolysis technology for circulating cooling water in which an electric field is formed between the anode assembly and the cathode assembly so that the calcification-forming ions in the circulating cooling water deposit on the cathode assembly by electrolysis. If calcareous deposits have accumulated to a certain thickness, the limescale deposits are removed by the descaling assembly, and the microelectrolysis apparatus can be reused. According to the present invention, the microelectrolysis apparatus for treating circulating cooling water works simply by being energized without having to add any chemicals during processing. The microelectrolysis device is suitable for water with a variety of hardnesses, it is convenient to operate, has low costs and does not pollute the environment with it. The microelectrolysis apparatus of the present invention can be used in a variety of applications in which ions (which can be deposited by electrolysis, such as calcium, magnesium, etc.) must be removed from water.

With reference to 2 and 3 has as one of embodiments, the cultivation chamber 300 preferably a first rectangular flange 301 , a second rectangular flange 302 , a first chamber member 303 , a second chamber component 304 , an inlet pipe 305 and an outlet pipe 306 in this embodiment. The first rectangular flange 301 , the second rectangular flange 302 , the first chamber component 303 and the second chamber component 304 form the framework of the cultivation chamber 300 out. Two ends of the first chamber component 303 are on the first rectangular flange 301 or on the second rectangular flange 302 attached, and two ends of the second chamber member 304 are on the first rectangular flange 301 or on the second rectangular flange 302 attached. The inlet pipe 305 and the outlet pipe 306 are arranged symmetrically, one is on the first chamber member 303 attached and the other is on the second chamber component 304 attached. A wastewater outlet 307 is also provided on the underside of the cultivation chamber in this embodiment. The waste water outlet is closed when the microelectrolysis device is in operation. In this embodiment, the frame of the mounting chamber is rectangular for ease of manufacture, however, the frame may be configured to have a variety of shapes according to actual requirements as long as the frame can mate with the cathode assembly and the anode assembly. In this embodiment, the first chamber member and the second chamber member may be fixed to the first flange or to the second flange by welding or bolting, preferably by welding. The inlet tube and the outlet tube are preferably funnel-shaped in this embodiment.

With reference to 4 and 5 As one of embodiments, the anode assembly is shown 100 preferably an anode steel plate 101 , a titanium plate 102 , a variety of anode plates 103 , an anode connection wall 104 and guide rails 105 on. The anode steel plate 101 is parallel to the titanium plate 102 arranged and firmly connected by bolts, the plurality of anode plates 103 are by welding to the titanium plate 102 attached, the guide rails 105 are on upper surfaces and on lower surfaces of the anode plates 103 arranged, the plurality of anode plates 103 are arranged parallel to each other, and the anode connection wall 104 is on one of the titanium plate 102 opposite side to the anode steel plate 101 attached. The guide rails 105 In this embodiment, they can be fastened to the anode plates by bolted bolts.

The vertical distance between two adjacent anode plates 103 is preferably between 10 mm and 80 mm, preferably 23 mm.

The anode plates 103 are preferably perpendicular or oblique with respect to the titanium plate 102 , Preferably, the anode plates are perpendicular to the titanium plate for ease of manufacture and good attachment.

With reference to 6 and 7 As one of the embodiments, the cathode assembly is shown 200 preferably a cathode steel plate 201 , a variety of cathode plates 202 and a cathode connection wall 203 on. The cathode plates 202 are by welding perpendicular to the cathode steel plate 201 attached, the cathode connection wall 203 is at the cathode steel plate 201 attached, and the variety of cathode plates 202 are parallel to each other. The cathode steel plate and the cathode plates are fixed together by welding, and the cathode terminal wall is welded on the cathode steel plate in this embodiment.

The vertical distance between two adjacent cathode plates 202 is preferably between 10 mm and 28 mm, preferably 21 mm.

The cathode plates 202 are preferably perpendicular or oblique with respect to the cathode steel plate 201 , Preferably, the cathode plates are perpendicular to the cathode steel plate.

When the anode assembly and the cathode assembly are assembled in the mounting chamber, a hollow, sealed container is formed. In this embodiment, the container is of cubic shape. After assembly, the anode plates can 103 and the cathode plates 102 be arranged in parallel. There are two implementations: In one implementation, the anode plates are disposed perpendicular to the titanium plate and the cathode plates are disposed perpendicular to the cathode steel plate; in the other implementation, the tilt directions of the anode plates and cathode plates are identical.

The anode plates 103 and the cathode plates 202 may be arranged in a staggered manner, but in this case they can not come into contact with each other. There are three implementations: In a first implementation, the anode plates are oblique to the titanium plate and the cathode plates are perpendicular to the cathode steel plate; in a second implementation, the anode plates are perpendicular to the titanium plate and the cathode plates are oblique to the cathode steel plate; In a third implementation, the anode plates are oblique to the titanium plate and the cathode plates are oblique to the Cathode steel plate. And in the third implementation, the anode plates and cathode plates can not come into contact with each other.

Preferably, in the microelectrolysis apparatus of this embodiment, the distance between the ends of the anode plates 103 and the cathode steel plate 201 between 5 mm and 20 mm or is the distance between the ends of the cathode plates 202 and the titanium plate between 5 mm and 20 mm, preferably 10 mm.

The inter-electrode distance between the adjacent anode plate and cathode plate is less than 50 mm, preferably 10 mm. In this embodiment, when the inter-electrode spacing, i. h., the distance between the adjacent anode plate and cathode plate is greater than 50 mm, more electrical energy will be consumed to meet the same descaling requirements; while, if the distance between the adjacent anode plate and cathode plate is too small, frequent descaling operations will be required; therefore, the vertical distance between the adjacent anode plate and cathode plate is preferably between 10 mm and 50 mm.

Also preferably provided on the underside of the microelectrolysis apparatus is a waste water outlet, preferably a waste water discharge pipe, for discharging the waste water produced when the lime deposits removed by the descaling unit are flushed. The waste water discharge pipe may be disposed on the cultivation chamber, on the cathode assembly, or on the anode assembly as long as the waste discharge pipe is located at the bottom of the microelectrolysis apparatus, so that the waste water generated when the limescale is washed can be discharged by gravity.

As a preferred implementation in this embodiment, the descaling assembly is preferably a scraper 400 , In this embodiment, the scraper may be attached to the build chamber or to the cathode assembly as long as it can remove the lime deposits on the cathode assembly. With reference to 8th For example, in this embodiment, the scraper is rod-shaped, with the general shape of the scraper corresponding to the shape of the cathode steel plate. The scraper is with through holes 410 provided, and the positions, the number and the shapes of the through holes 410 correspond to those of the cathode plates. While installing is the scraper 400 attached to the cathode side of the microelectrolysis device, which is the cathode plates 202 allows through the through holes 410 in the scraper 400 pass through, so if the cathode plates 202 be pulled out, the limescale layer on the cathode plates with the scraper 400 which remains immobile, can be scraped off. Alternatively, the scraper is strip-shaped so that the strip-shaped scraper can be controlled to move along the cathode plates.

It should be noted that in this embodiment, the cathode assembly may be fixed to the mounting chamber, the scraper may be disposed within the hollow vessel formed by the anode assembly, the cathode assembly, and the mounting chamber with the scraper and the cathode plate in contact. A control system may be configured to control the operation of the scraper; When the control system judges that the descaling condition is met, it controls the scraper to start and scrape the scale deposit layer on the cathode plates. In this case, it is necessary that a waste water outlet be located at the bottom of the microelectrolysis apparatus, and the descaling can be implemented without having to pull out the cathode assembly.

With reference to 1 As a preferred embodiment, the microelectrolysis device preferably further comprises a cylinder 700 on, with the cylinder 700 firmly with the cathode steel plate 201 the cathode assembly 200 connected, the cylinder 700 the cathode assembly 200 on the frame of the cultivation chamber 300 presses and fixes, and the cylinder 700 the cathode assembly 200 can drive to move. In this embodiment, the cathode assembly is removably connected to the mounting chamber, wherein the cathode assembly can be pressed and fixed by means of the cylinder to the mounting chamber or pulled out for descaling. The cylinder is primarily intended for decalcification, and as the cylinder drives the cathode assembly to move, the scraper comes into contact with the cathode plates and scrapes the limescale from surfaces of the cathode plates.

In order to avoid water leakage and to ensure good sealing properties, in this embodiment preferably a first seal 500 disposed between the anode assembly and the frame of the attachment chamber and is a second seal 600 disposed between the cathode assembly and the frame of the cultivation chamber.

As a preferred embodiment, the descaling assembly preferably includes ultrasonic vibrators; wherein the ultrasonic vibrators are preferably disposed on the anode assembly and / or on the cathode assembly. The ultrasonic vibrators may be disposed on either the anode assembly or on the cathode assembly as long as the directions of generated ultrasonic waves are parallel to the cathode plates.

In this embodiment, the cathode steel plate of the cathode assembly is preferably grooved, and the ultrasonic vibrators are disposed in the grooves. In this embodiment, the ultrasonic vibrators are arranged on the cathode steel plate, which is selected according to actual conditions of the micro-electrolysis cell, since typically the anode steel plate is provided with stud bolts, which may affect the ultrasonic vibrator and may cause difficulties in installation. Therefore, in this embodiment, the ultrasonic vibrators are preferably arranged on the cathode steel plate. The specific implementation is as follows: making grooves in the cathode steel plate, welding the ultrasonic vibrators in the grooves, and sealing the grooves with caps, thereby avoiding corrosion and extending the life of the ultrasonic vibrators.

In order to reduce the penetration depth of the ultrasonic waves, when the vibrators are mounted in the grooves, the distance between the front ends of the vibrators and the bottom of the grooves, i. h., The vertical distance between the ultrasonic vibrators and the cathode plates, preferably between 2 mm and 3.5 mm, preferably not more than 3 mm. When the ultrasonic vibrators generate ultrasonic waves, the ultrasonic waves pass through the bottom of the grooves, and therefore, the calcification layer on the cathode plates falls in the circulation water due to the specific action of the ultrasonic waves, thereby achieving the descaling effect.

The frequency of the ultrasonic vibrator is preferably between 20 kHz and 60 kHz.

The number of ultrasonic vibrators is decided in view of the number of cathode plates, and the ultrasonic vibrators may be uniformly arranged on the cathode steel plate. Preferably, the ultrasonic vibrators are arranged parallel to the cathode plates, d. That is, a plurality of ultrasonic vibrators are arranged in a column, the number of columns of the ultrasonic vibrators is the same as the number of columns of the cathode plates, and the ultrasonic vibrating columns are aligned with the cathode plates. In addition, an ultrasonic power supply and other facilities should be provided. When decalcification is required, the ultrasonic power supply is turned on and the ultrasonic waves are generated between the ultrasonic vibrators. Since the oscillation frequency of the cathode plate is different from the oscillation frequency of the calcification layer, the calcification layer on the cathode plate drops. When the descaling is completed, the sewage discharge valve is opened, then the precipitated lime deposit layer, together with the circulating water left in the microelectrolyzer, is discharged through the sewage outlet at the bottom of the micro-electrolyzer.

It should be noted that the decalcifier assembly may be any physical or biological decalcifier, as long as it can be used in combination with the microelectrolysis apparatus of the present invention.

The present invention also provides a control method for the microelectrolysis apparatus according to any one of the above embodiments, i. that is, when the descaling condition is satisfied, the operation of the microelectrolyzer is stopped, and the microelectrolyzer is descaled when turned off.

The descaling condition is that the thickness of lime deposits on the cathode plates of the cathode assembly is greater than 60% of the electrode gap between adjacent anode plate and cathode plate, or that the concentration multiple factor K of circulation water deviates from the range of 8 ± 4, or the pipe pressure drop ΔP of the microelectrolysis device is greater than 10 kPa or that the cell voltage V of the microelectrolysis device increases by more than 500 mV. If any one of the above four conditions is satisfied, the microelectrolysis apparatus proceeds to the decalcifying step in the off state. When the calcification thickness is used as a parameter, the calcification thickness should not be greater than 0.6 times the distance between the adjacent anode plate and the cathode plate, therefore, the device proceeds to the descaling step in the off state whenever the calcification thickness exceeds 0.6 times the distance between adjacent anode plate and cathode plate. Typically, the apparatus proceeds to the decalcification step in FIG off state when the thickness of limescale on the cathode plates of the cathode assembly is greater than 30 mm.

In this case, the decalcifying step in the switched-off state comprises in particular: first, switching off the power supply of the micro-electrolysis cell; then manual, semi-automatic or automatic closing of the circulation water inlet valve and the fresh water outlet valve; Switching on and starting up the decalcifier assembly of the microelectrolysis device for (T2) minutes; Opening the sewage drain valve when the decalcification assembly stops operating; Draining liquid for (T4) seconds; Opening the rinse water inlet valve (especially the fresh water outlet valve in this embodiment) and rinsing for (T5) seconds; Closing the wastewater drain valve. Until then, the descaling of the microelectrolysis apparatus is completed and the apparatus enters a waiting state.

Accordingly, the present invention is made with reference to 9 also an integrated water treatment device, which the electrolyzer 1 according to any one of the embodiments; wherein the integrated water treatment device further comprises a power supply 2 , a control system, valves and a detector. The energy supply 2 is configured to supply energy to the microelectrolysis apparatus; the control system is each electrically connected to the valves and the detector to control opening and closing of the valves based on the signals received from the detector; the inlet pipe of the microelectrolysis device 1 is with the circulation water inlet piping 3 connected; and the outlet pipe of the microelectrolysis apparatus 1 is with the fresh water outlet piping 4 connected.

Preferably, the detector has a calcification amount detecting unit 5 which is configured to detect the amount of lime deposits on the cathode plates of the microelectrolysis apparatus. Here, the Kalkablagerungsmengenerfassungseinheit is electrically connected to the cathode plates.

Preferably, the detector has a concentration multiple factor detection unit 6 which is configured to detect the concentration multiple factor of the circulating water.

Preferably, the detector has a pipeline pressure detection unit 7 which is configured to detect the piping pressure of the integrated water treatment device.

The detector preferably has a cell voltage detection unit 8th which is configured to detect the cell voltage of the microelectrolysis device.

It should be noted that the detector may include any one or more of the calcification amount detecting unit, the concentration multiple factor detecting unit, the piping pressure detecting unit, and the cell voltage detecting unit. The microelectrolysis apparatus proceeds to the decalcifying step in the off state as soon as the parameters detected by the detector satisfy the descaling condition.

The control system may control the microelectrolysis apparatus in accordance with the detection results of the detector to operate normally or proceed to the descaling step when turned off, and control opening and closing of the respective valves when the microelectrolysis apparatus is operating or proceeding to the descaling step when turned off.

Preferably, the valves have a circulation water inlet valve 9 , a fresh water outlet valve 10 and a waste water drain valve 11 on;
wherein the circulation water inlet valve 9 in the circulation water inlet piping 3 is installed, the fresh water outlet valve 10 in the fresh water outlet piping 4 is installed, the flushing water inlet valve is installed in the Spülwassereinlassrohrleitung and the waste water drain valve 11 in the waste water drainage pipe 12 is installed. The fresh water outlet is used as the rinse water inlet in this embodiment to simplify the design of the process piping.

Preferably, the control system further comprises a liquid level detection unit configured to detect the liquid level of the microelectrolysis device.

Preferably, the circulation water inlet piping is provided with a water meter for detecting an amount of water and a flow meter for detecting the current flow rate.

Preferably, the integrated water treatment device further comprises an electrolyte inlet filter and enters the circulation water into the microelectrolysis device after being treated by the electrolyte inlet filter. The electrolyte inlet filter provided in this embodiment is configured to remove larger impurities and flocculations in the circulating water by filtration, thereby lengthening the rinsing time for the microelectrolysis apparatus, thus prolonging the life of the apparatus. Alternatively, the circulation water pump and the water storage tank are also in a bypass connection, based mainly on the consideration that, when the microelectrolysis apparatus must stop operating and descaling, circulation water can return directly to the water storage tank without having to pass through the microelectrolysis apparatus ,

Preferably, the integrated water treatment device is integrally movable and further includes a base, wherein the power supply, the control system, the valves and the detector are all mounted on the base. In this embodiment, the base is made of section steel and steel plates, and the base can not only support the related devices, but is also suitable for transportation.

Preferably, the integrated water treatment device is further provided with a sample testing table. Preferably, in the integrated water treatment apparatus of this embodiment, when the respective units have been properly arranged and assembled, only the circulation water inlet, the circulation water outlet, and the circulation water pump return port are connected to the externally circulating cooling water. The integrated water treatment device can be put into operation simply by completing the connection of cooperating piping and the connection to the external power source. The device occupies a small footprint and is convenient to use.

The present invention also provides a method of conditioning circulating cooling water using the microelectrolysis apparatus according to any of the embodiments;
wherein, when the microelectrolysis device is in use, the anode connection wall 104 and the cathode connection wall 203 are connected to a positive electrode or a negative electrode of the power supply; at this time, the circulating cooling water enters the microelectrolysis apparatus and the circulating cooling water flows out of the microelectrolyzer after being electrolyzed in the microelectrolysis apparatus; after a period of use, limescale deposits of a certain thickness have accumulated on surfaces of the cathode plate of the cathode assembly; then stopping the operation of the microelectrolysis apparatus and advancing the microelectrolysis apparatus to the descaling step; and the microelectrolysis device is restarted after the microelectrolysis device has been descaled.

In operation is an inlet assembly 800 the circulation cooling water device with an inlet pipe 305 the cultivation chamber connected; the circulating cooling water enters the microelectrolysis apparatus through the inlet pipe; and the circulating cooling water, after being electrolyzed, flows out of the outlet pipe of the cultivation chamber. When the microelectrolysis apparatus has to be descaled, the operation of the microelectrolysis apparatus is stopped, the waste water outlet becomes 307 opened, and the cathode assembly is pulled out by means of the cylinder; the scale deposits on surfaces of the cathode plates are scraped off by the scraper as the cathode assembly is withdrawn and the scale deposits are discharged from the waste water outlet; and the cylinder returns to the pressed position thereafter. After the microelectrolysis device has been purged with circulating water, it can be restarted. Alternatively, the operation of the microelectrolysis apparatus will be stopped, the circulation cooling water inlet valve and the fresh water outlet valve will be opened; then the electrolysis cell is filled with circulation water and the ultrasonic vibrator for ultrasonic descaling are turned on; becomes the wastewater outlet 307 after completion of the descaling opened and the lime deposits are discharged together with the circulation water in the electrolysis cell.

Preferably, the microelectrolysis device is powered by a constant current power source, i. that is, the flow of the microelectrolyzer remains unchanged during the process.

Preferably, an electric current density of the microelectrolysis device is between 10 A / m ² and 50 A / m ² ; For example, the flow rate of the circulating cooling water through the microelectrolyzer is from 0.02 m / s to 0.2 m / s, and the water flow direction is perpendicular to the direction of the electric field formed by the microelectrolyte.

Embodiment 1

A miniaturized microelectronics testing apparatus is manufactured with an anode size of 50 mm × 100 mm and a cathode size of 50 mm × 100 mm; the electrodes are in parallel connection; and the distance between the cathode and the anode is 10 mm. Electrolyte is taken from tap water and the water quality is shown in Table 1. The flow rate is controlled to 2.5 l / min, and the test is conducted at room temperature to study the relationship between lime deposition reaction time and lime deposition amount under the same flow density. Table 1:

Under the current density of 10 A / m ² , limescale deposition tests are carried out on two cathodes in the same group for 24 h, 48 h, 72 h, 96 h and 120 h, respectively. In each test, the amount of lime deposit is weighed and each corresponding voltage value recorded. As in 10 and 11 a) the scale of limescale increases with time, but there is no linear relationship between them; the longer the time, the slower the rate of calcification; b) the voltage value increases continuously faster and faster with increasing calcification time.

From the above tests, it can be seen that an increase in the cell voltage amplitude of the microelectrolysis apparatus can be selected as a descaling condition, in particular, the descaling condition is that the cell voltage V of the microelectrolyzer increases by more than 500 mV. This method is applicable to actual applications.

Embodiment 2

A miniaturized ultrasonic irrigation apparatus for an electrode workshop is used wherein the ultrasonic irrigation apparatus has an ultrasonic transmission power of 600 W, a liquid heating power of 500 W and an ultrasonic frequency of 40 kHz. The water is heated to 50 ° C, the calcified cathodes are placed in the water for 72 h, as was done in the embodiment 1; an ultrasonic transfer switch is turned on, the limescale layer on the cathode plates drops, and the time is recorded. The descaling amount after completion of the descaling is weighed. Table 2: A comparison chart illustrating the relationship between the ultrasonic descaling effect and the descaling time Cathode no. Ultrasonic decalcification time (min) Initial scale of limescale (g) Decalcification amount (g) Descaling effect (%) 3 15 2.1063 1.6749 79.52 4 30 2.0067 1.7703 88.22 5 45 1.8835 1.8083 96.01 6 60 2.0290 1.9939 98.27

It can be seen from Table 2 that the descaling effect is excellent when the water temperature is 50 ° C and the ultrasonic transmission power is 600W.

Embodiment 3

A microelectrolysis apparatus is manufactured. The microelectrolysis apparatus includes an anode assembly, an attachment chamber, a cathode assembly, a liquid inlet tube and a liquid outlet tube, wherein the cathode surface is 0.0704 m ² and the cathode assembly and the anode assembly are mounted to the first flange and the second flange, respectively. The liquid inlet pipe is disposed at the lower part of the electrolysis chamber formed by the first flange, the second flange, the first chamber member, and the second chamber member; the liquid outlet pipe is placed at the upper part of the electrolysis chamber; and ultrasonic vibrators are installed in the grooves in the cathode steel plate. The bottom thicknesses of the grooves, in particular the distance between the bottom of the grooves and the connections of the cathode plates and the cathode steel plate, is 3 mm. When the microelectrolysis device is operating for a period of time, the cathode surface is covered with a layer of limescale deposits of 1 mm thickness, then the decalcification assembly is turned on for ultrasonic descaling. Specifically, the above process comprises steps of: first, turning off the power of the micro-electrolysis cell, closing the water inlet valve and the fresh water outlet valve in a fully automatic manner, energizing the ultrasonic generator, and beginning the transmission of ultrasonic waves. The ultrasonic waves are transmitted with a power of 100 W, and the frequency of the ultrasonic waves is 28 kHz. The lime deposits are continuously vibrated and rinsed and gradually dissolve and fall off the cathode surface. It can be observed that limescale accumulates on the cell bottom in flaky shapes and the water is milky white due to calcification microparticles. 30 minutes later, the decalcifying assembly is stopped, that is, the power supply of the ultrasonic generator is turned off; the drain valve is opened and the liquid drained for 10 seconds; the flush water inlet valve, ie, the fresh water outlet valve, is opened; the liquid is rinsed for 30 seconds; and the drainage valve is closed. At this time, the decalcification of the microelectrolysis apparatus is completed, and the microelectrolyzer enters a standby state. Metal surfaces of the cathode plates are substantially exposed after being decalcified by ultrasound, and the descaling effect is about 88%.

Embodiment 4

A small industrial water system in a pesticide plant originally used chemical agents to treat limescale, but lime scale was severe and interfered with normal operations. As part of an agreement with the company, a prototype scale test was conducted for the microelectrolysis apparatus. Test results are shown as follows: Table 3: Quality of aggregate water criteria pH Temperature (° C) Calcium hardness (mg / l) Total alkalinity (mg / l) Conductivity (μS / cm) Total hardness (mg / l) Chloride ions (mg / l) value 7.23 20 121 113 372 154 22

Here, the calcium hardness, the total alkalinity and the total hardness based on CaCO3 are counted.

After treating the circulating cooling water by the microelectrolysis apparatus, the quality of the circulating cooling water is as shown in Table 4. The water quality meets the standards for circulating cooling water, and the device works stably. Table 4: Quality of circulating water criteria pH Temperature (° C) Calcium hardness (mg / l) Total alkalinity (mg / l) Conductivity (μS / cm) Total hardness (mg / l) Chloride ions (mg / l) Value 7.23 20 121 113 372 154 22

The above process of the microelectrolysis apparatus is divided into two steps as follows: turning on and putting into operation of the microelectrolysis apparatus; Descaling and restarting the microelectrolysis device. The step of switching on and putting into operation serves to supply a certain electric current to the microelectrolysis device; and under the combined effect of the electric field force and the chemical reaction, lime deposits accumulate on the surfaces of the cathode plates of the microelectrolysis apparatus. A small proportion of calcium ions in water can be removed, while most calcium ions continue to participate in the circulation of cooling water, and a proportion of calcium ions bind with chloride ions, thereby realizing the effect of corrosion inhibition. At the anode, chloride gas is generated and the chloride gas dissolves in water and forms hypochlorous acid, which has an antimicrobial effect. In addition, strongly acidic environments are created at the cathode and anode, which has an additional antimicrobial effect on the water flowing through the microelectrolysis apparatus. The descaling and restarting step is performed as the calcification deposits on the cathode surface become thicker and the voltage increases after the microelectrolysis device is operated for a period of time.

The descaling assembly is a rod-shaped scraper attached to the cultivation chamber, and the length of the scraper corresponds to the width of the cathode plates. During decalcification, the scraper moves along the cathode plates. When the control system detects that the thickness of the limescale deposits on the cathode assembly reaches the predetermined value, it controls the scraper to turn on to remove the limescale layer from the cathode plates, and the limescale-containing liquid is drained from the waste water outlet at the bottom of the micro-electrolysis cell ,

The microelectrolysis apparatus of the present invention is used in the treatment of circulating cooling water. The device itself does not add or produce any harmful components, which may bring about improvements in wastewater pollution problems caused by chemicals that would be introduced into circulation water according to the existing conventional method, without increasing the burden of the plants on wastewater treatment. The requirements for the quality of fresh aggregate water decrease significantly, and economic and social benefits are significant.

What has been described above are some embodiments of the present invention, and they are specific and detailed, but are not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various modifications and improvements can be made without departing from the concept of the present invention, and all such modifications and improvements are within the scope of the present invention. The scope of the present invention should be covered by the appended claims.

Claims (20)

A micro-electrolysis device, characterized in that an anode assembly, a cathode assembly, an attachment chamber and a Entkalkungsbaugruppe, wherein anodes of the anode assembly and cathode assembly of the cathode are arranged in a staggered manner on the mounting chamber; wherein the descaling assembly is disposed on the anode assembly, on the cathode assembly or on the attachment chamber. The microelectrolysis apparatus according to claim 1, characterized in that the cultivation chamber has a first rectangular flange, a second rectangular flange, a first chamber member, a second chamber member, an inlet pipe, and an outlet pipe; the first rectangular flange, the second rectangular flange, the first chamber component and the second chamber component form a frame of the growing chamber; two Ends of the first chamber member are attached to the first rectangular flange or to the second rectangular flange and two ends of the second chamber member are attached to the first rectangular flange and to the second rectangular flange; and the inlet tube and the outlet tube are arranged symmetrically, one attached to the first chamber member and the other secured to the second chamber member. The microelectrolysis apparatus according to claim 2, characterized in that the anode assembly comprises an anode steel plate, a titanium plate, a plurality of anode plates, an anode terminal wall and guide rails; the anode steel plate is arranged parallel to the titanium plate and fixedly connected thereto; the plurality of anode plates are attached to the titanium plate; the guide rails are disposed on upper surfaces and lower surfaces of the anode plates; the plurality of anode plates are parallel to each other; the anode terminal wall is attached to the anode steel plate; and the anode plate is perpendicular to the titanium plate. The micro-electrolysis apparatus according to claim 3, characterized in that the cathode assembly comprises a cathode steel plate, a plurality of cathode plates, and a cathode terminal wall; the cathode plates are fixed vertically to the cathode steel plate; the cathode connection wall is fixed to the cathode steel plate; the plurality of cathode plates are parallel to each other; and the cathode plates are perpendicular to the cathode steel plate. The microelectrolysis apparatus according to claim 4, characterized in that an inter-electrode gap between the adjacent anode plate and the cathode plate is less than 50 mm. The microelectrolysis apparatus of any one of claims 1 to 5, characterized in that the decalcification assembly is a scraper configured to machine calcifications on the anode assembly. The microelectrolysis apparatus according to claim 6, characterized in that the microelectrolyzer further comprises a cylinder; the cylinder is fixedly connected to the cathode assembly; the cylinder presses and fixes the cathode assembly to a frame of the attachment chamber; and the cylinder is configured to drive the cathode assembly for movement. The microelectrolysis apparatus according to claim 7, characterized in that the cathode assembly and the anode assembly are each isolated from and sealed to the frame of the mounting chamber. The microelectrolysis apparatus according to any one of claims 1 to 5, characterized in that the decalcifying assembly comprises ultrasonic vibrators; the ultrasonic vibrators are disposed on the anode assembly and / or on the cathode assembly; and directions of ultrasonic waves generated during operation of the ultrasonic vibrator are parallel to surfaces of electrodes. The microelectrolysis apparatus according to claim 9, characterized in that the cathode steel plate is grooved in the cathode assembly; the ultrasonic vibrators are disposed in the grooves; and a thickness of bottoms of the grooves is in a range of 2 mm to 3.5 mm. An integrated water treatment device, characterized in that the integrated water treatment device comprises the above microelectrolysis device according to one of claims 1 to 10; further comprising a power supply, a control system, valves and a detector; wherein the power supply is configured to supply power to the microelectrolysis apparatus; the control system is electrically connected to the valves and the detector, respectively, for controlling a program to run on the basis of signals and data information received from the detector; an inlet pipe of the microelectrolysis apparatus is connected to a circulation water inlet pipe; and an outlet pipe of the microelectrolysis apparatus is connected to a fresh water outlet pipe. The integrated water treatment device according to claim 11, characterized in that the detector comprises a calcification amount detecting unit; and the calcification amount detecting unit is configured to detect an amount of limescale on cathode plates of the microelectrolysis apparatus. The integrated water treatment device according to claim 11, characterized in that the detector comprises a concentration multiple factor detection unit configured to detect a concentration multiple factor of circulating water. The integrated water treatment device according to claim 11, characterized in that the detector comprises a pipe pressure detection unit configured to detect the pipe pressure of the integrated water treatment device. The integrated water treatment device according to claim 11, characterized in that the detector comprises a cell voltage detection unit configured to detect the cell voltage of the microelectrolysis device. The integrated water treatment apparatus according to any one of claims 11 to 15, characterized in that the valves include a circulation water inlet valve, a fresh water outlet valve and a waste water drain valve; wherein the circulation water inlet valve is installed on the circulation water inlet pipe; the fresh water outlet valve is installed on the fresh water outlet pipe; and the waste water drain valve is installed on the waste water discharge piping. The integrated water treatment device according to claim 16, characterized in that the detector further comprises a liquid level detection unit configured to detect a liquid level of the microelectrolysis device. The integrated water treatment device according to claim 16, characterized in that the circulation water inlet pipe is equipped with a flow meter. The integrated water treatment device according to claim 16, characterized in that the integrated water treatment device further comprises an electrolyte inlet filter; and the circulation water enters the microelectrolysis apparatus after being treated by the electrolyte inlet filter. The integrated water treatment device according to claim 11, characterized in that the integrated water treatment device is integrally movable and further comprises a base; wherein the power supply, the control system, the valves and the detector of the microelectrolysis device are all arranged on the base.

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