An electrochemical treatment system and method for circulating water bypass of a box-type power plant

Abstract

The application discloses a kind of box-type power plant circulating water bypass electrochemical treatment system and method, one end of water taking pipe is connected with the water outlet main pipe of circulating pump, water taking electric valve is installed on water taking pipe, the other end of water taking pipe is connected with the water inlet of box-type electrochemical treatment device, the water outlet of box-type electrochemical treatment device is connected with the inlet of water outlet pipeline through water outlet electric valve, the outlet of water outlet pipeline is connected with circulating water pool, the water outlet of box-type electrochemical treatment device is connected with the inlet of water quality monitoring instrument box, the water outlet of water quality monitoring instrument box is connected with sewage pool through blowdown electric valve and blowdown pipeline, the system and method can realize the treatment of power plant open cooling circulating water, reduce the hardness, alkalinity and Cl ion concentration of high concentration ratio circulating water, reduce the scaling and corrosion risk of circulating water system condenser and pipeline, ensure the safe operation of circulating water system, and reduce reagent addition and blowdown, which is beneficial to environmental protection and improves economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of power plant circulating water treatment technology, and relates to a box-type power plant circulating water bypass electrochemical treatment system and method. Background Technology

[0002] With economic development and environmental protection requirements, the state has put forward stricter requirements to promote the conservation and rational development and utilization of water resources. Since thermal power plants are major water users, in accordance with relevant national policies, laws, and regulations, they are required to thoroughly implement the concepts of green and efficient water use and water conservation, and improve water use efficiency. In the construction of thermal power plants in central and southern China, open-type cooling tower circulating water systems are often used. To save water and reduce emissions, the concentration ratio of the circulating cooling water must be increased. However, with the increase in the concentration ratio, the hardness, alkalinity, ion concentration, and pH value of the circulating water also increase, which will increase scaling in the condensers and pipes of the thermal power unit's circulating water system. Corrosion risk: To ensure the safe operation of the circulating water system and prevent scaling and corrosion in the condenser and pipelines, strict requirements are placed on the water quality indicators of the circulating water. To solve this contradiction, scale inhibitors and slow-release agents are usually added to the circulating water system, and acid treatment is performed to increase the concentration ratio of the circulating water to achieve water-saving goals. However, due to the large volume of water in this circulating water system, the large amount of acid added, the high concentration of calcium and magnesium ions, and the high hardness of the circulating water, long-term operation using this method will result in a high risk of scaling and corrosion in the condenser and pipelines of the circulating water system. In addition, the system also requires irregular sewage discharge, resulting in limited water-saving effects. Long-term addition of chemicals to the circulating water system is not conducive to ecological and environmental protection and has a low cost-effectiveness ratio. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a box-type power plant circulating water bypass electrochemical treatment system and method. This system and method can treat open cooling circulating water in power plants, reduce the hardness, alkalinity and Cl ion concentration of high concentration ratio circulating water, reduce the risk of scaling and corrosion in the condenser and pipeline of the circulating water system, ensure the safe operation of the circulating water system, and reduce the addition of reagents and sewage discharge, which is beneficial to environmental protection and improves economic efficiency.

[0004] To achieve the above objectives, the present invention discloses a box-type power plant circulating water bypass electrochemical treatment system, including a water intake pipe, a circulating pump, a box-type electrochemical treatment device, an outlet pipe, a circulating water pool, a water quality monitoring instrument box, and a sewage pool. One end of the water intake pipe is connected to the outlet header of the circulating pump. An electric water intake valve is installed on the water intake pipe. The other end of the water intake pipe is connected to the inlet of the box-type electrochemical treatment device. The outlet of the box-type electrochemical treatment device is connected to the inlet of the outlet pipeline via an electric outlet valve. The outlet of the outlet pipeline is connected to the circulating water pool. The outlet of the box-type electrochemical treatment device is connected to the inlet of the water quality monitoring instrument box. The drain outlet of the water quality monitoring instrument box is connected to the sewage pool via a sewage discharge electric valve and a sewage discharge pipeline.

[0005] Furthermore, it also includes wind power, photovoltaic power, energy storage cabinet, grid power and power control system. The wind power, photovoltaic power, energy storage cabinet and grid power are respectively connected to the power control system, and the power control system is connected to the power terminal of the box-type electrochemical treatment device.

[0006] Furthermore, it also includes an overflow pipe, one end of which is connected to the overflow port of the box-type electrochemical treatment device, and the other end of which is connected to the inlet of the outlet pipe.

[0007] Furthermore, the box-type electrochemical treatment device includes a box body, inside which is a base, a drainage chamber on the base, and an inlet chamber, an electrochemical treatment chamber, and an outlet chamber located above the drainage chamber. The inlet chamber, the electrochemical treatment chamber, and the outlet chamber are connected in sequence. A flow stabilizing grid is installed in the inlet chamber. A cathode plate and an anode plate are installed in the electrochemical treatment chamber. An exhaust fan, an anode terminal, and a cathode terminal are installed on the top of the electrochemical treatment chamber. The anode terminal and the cathode terminal are connected to a power control system via a power terminal. An anode terminal is installed on the anode plate, and a cathode terminal is installed on the cathode plate. The anode terminal is connected to the anode terminal, and the cathode terminal is connected to the cathode terminal. A sloping bottom surface is provided in the drainage chamber. The inlet is located on the inlet chamber, the outlet is located on the outlet chamber, the overflow outlet is located on the outlet chamber, and the drain outlet is located at the bottom of the drain chamber.

[0008] Furthermore, a level gauge is installed in the water inlet chamber.

[0009] Furthermore, the base is equipped with forklift holes.

[0010] Furthermore, an ultrasonic generator is installed at the bottom of the water outlet chamber, and an ultrasonic vibrating rod is mounted on the ultrasonic generator through the drainage chamber.

[0011] This invention discloses an electrochemical treatment method for circulating water bypass in a box-type power plant, comprising the following steps: The circulating water is drawn from the outlet header of the circulating pump, then enters the inlet chamber through the inlet, and then passes through the flow stabilizer to ensure that the water flows evenly and smoothly into the electrochemical treatment chamber for electrochemical treatment. At the same time, wind power and photovoltaic power input green electricity into the power control system, grid power input peak and valley electricity into the power control system, and energy storage cabinets store green electricity and peak and valley energy. The circulating water, after being treated in the electrochemical treatment chamber, enters the outlet chamber, passes through the outlet, enters the outlet pipeline, and returns to the circulating water pool.

[0012] Furthermore, the water quality monitoring instrument box detects the phenolphthalein alkalinity of the water outlet. f With total alkalinity JD q When JD q >Set total alkalinity JD Q When the value is reached, the current I from the power control system to the cathode and anode plates increases to I0. q + i, until JD q <JD Q Then the current I according to I q Value runs, when JD f >Setting the phenolphthalein alkalinity JD F When the value is equal to the current I=I, the current is calculated according to the formula: D The value runs until JD. f <JD F Afterwards, the power control system restores the current I value to I. f During operation, the output current range I controlled by the power supply control system min <I q <I q + i < I f <I D <I max .

[0013] Furthermore, after the box-type electrochemical treatment device has been running for a certain period of time (H), Mg(OH)2 and Ca(OH)2 precipitates are deposited on the anode plate. At this time, the power control system stops supplying power, the water intake electric valve is closed, and the ultrasonic generator works to generate ultrasonic vibration waves. The ultrasonic vibration waves loosen and dislodge the Mg(OH)2 and Ca(OH)2 precipitates deposited on the cathode plate into the drainage chamber. The sewage discharge electric valve is opened periodically to discharge the deposited Mg(OH)2 and Ca(OH)2 precipitates into the sewage tank.

[0014] The present invention has the following beneficial effects: In practical operation, the prefabricated electrochemical treatment system and method for circulating water in a power plant, as described in this invention, introduces circulating water into a prefabricated electrochemical treatment device via a water intake pipe on the main circulating water pipe for electrochemical treatment. Power is supplied to the prefabricated electrochemical treatment device using wind power, photovoltaic power, grid peak-valley power, and energy storage cabinets, through intelligent dynamic allocation by a power control system. This achieves energy saving and efficient utilization of electrical energy. The effluent water quality is monitored by a water quality monitoring instrument box, allowing the power control system to dynamically control the electrochemical treatment current of the prefabricated electrochemical treatment device in real time. This electrochemical bypass treatment reduces alkalinity and hardness in the circulating water, improving its quality and reducing the risk of scaling and corrosion in the condenser of thermal power generating units under high concentration rates of circulating cooling water. It also reduces emissions and saves water. Furthermore, it lowers the COD and Cl ion concentrations in the circulating water and kills and inhibits microorganisms and algae, effectively improving the safe and economical operation of the circulating water system in thermal power plants. This system is characterized by its compact size, ease of modification, automatic control, and high cost-effectiveness. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the system of the present invention; Figure 2 This is a schematic diagram of the box-type electrochemical treatment device 5 in this invention.

[0017] Among them, 1 is the circulating pump, 2 is the outlet header, 3 is the intake pipe, 4 is the intake electric valve, 5 is the box-type electrochemical treatment device, 6 is the power terminal, 7 is the exhaust fan, 8 is the overflow pipe, 9 is the outlet electric valve, 10 is the outlet pipe, 11 is the water quality monitoring instrument box, 12 is the sewage pipe, 13 is the sewage electric valve, 14 is the sewage tank, 15 is the circulating water tank, 16 is the wind power supply, 17 is the photovoltaic power supply, 18 is the energy storage cabinet, 19 is the power control system, 20 is the grid power supply, and 21 is the inlet... 22 is the water inlet, 23 is the water inlet chamber, 24 is the flow stabilizer, 25 is the housing, 26 is the anode terminal, 27 is the anode terminal, 28 is the cathode plate, 29 is the anode plate, 30 is the cathode terminal, 31 is the cathode terminal, 32 is the water outlet chamber, 33 is the overflow port, 34 is the water outlet, 35 is the ultrasonic generator, 36 is the base, 37 is the ultrasonic vibrator, 38 is the drainage chamber, 39 is the drainage outlet, 40 is the forklift hole, 41 is the sloping bottom surface, and 42 is the electrochemical treatment chamber. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this invention generally indicates that the preceding and following objects have an "or" relationship.

[0022] It should be understood that although terms such as first, second, third, etc., may be used in the embodiments of the present invention to describe the preset range, these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from one another. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0023] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0026] refer to Figure 1 and Figure 2 The box-type power plant circulating water bypass electrochemical treatment system of the present invention includes a circulating pump 1, an outlet header 2, an intake pipe 3, an intake electric valve 4, a box-type electrochemical treatment device 5, a power terminal 6, an exhaust fan 7, an overflow pipe 8, an outlet electric valve 9, an outlet pipe 10, a water quality monitoring instrument box 11, a sewage pipe 12, a sewage electric valve 13, a sewage tank 14, a circulating water tank 15, a wind power supply 16, a photovoltaic power supply 17, an energy storage cabinet 18, a power control system 19, and a grid power supply 20. The box-type electrochemical treatment device 5 mainly includes an inlet 21, a level gauge 22, an inlet chamber 23, a box body 25, an anode terminal 27, an exhaust fan 7, a cathode plate 28, an anode plate 29, a cathode terminal 31, an outlet chamber 32, an overflow port 33, an outlet port 34, an ultrasonic generator 35, a base 36, an ultrasonic vibrating rod 37, a drainage chamber 38, a drainage port 39, and an electrochemical treatment chamber 42.

[0027] One end of the water intake pipe 3 is connected to the outlet header 2 of the circulating pump 1. A water intake electric valve 4 is installed on the water intake pipe 3. The other end of the water intake pipe 3 is connected to the inlet 21 of the box-type electrochemical treatment device 5. One end of the overflow pipe 8 is connected to the overflow port 33 of the box-type electrochemical treatment device 5, and the other end of the overflow pipe 8 is connected to the inlet of the outlet pipe 10. The outlet 34 of the box-type electrochemical treatment device 5 is connected to the inlet of the outlet pipe 10 via the outlet electric valve 9. The outlet of 10 is connected to the circulating water pool 15. The outlet 34 of the box-type electrochemical treatment device 5 is connected to the inlet of the water quality monitoring instrument box 11. The drain outlet 39 of the water quality monitoring instrument box 11 is connected to the sewage pool 14 via the sewage discharge electric valve 13 and the sewage discharge pipe 12. The wind power supply 16, photovoltaic power supply 17, energy storage cabinet 18 and grid power supply 20 are respectively connected to the power control system 19. The power control system 19 is connected to the power terminal 6 of the box-type electrochemical treatment device 5.

[0028] In this embodiment, the box-type electrochemical treatment device 5 includes a box body 25. Inside the box body 25 are a base 36, a drainage chamber 38 mounted on the base 36, and an inlet chamber 23, an electrochemical treatment chamber 42, and an outlet chamber 32 located above the drainage chamber 38. The inlet chamber 23, the electrochemical treatment chamber 42, and the outlet chamber 32 are sequentially connected. A flow stabilizing grid 24 is installed in the inlet chamber 23. A cathode plate 28 and an anode plate 29 are installed in the electrochemical treatment chamber 42. An exhaust fan 7 and an anode terminal 27 are installed on the top of the electrochemical treatment chamber 42. The cathode terminal 31, anode terminal 27, and cathode terminal 31 are connected to the power control system 19 via the power terminal 6. An anode terminal 26 is provided on the anode plate 29, and a cathode terminal 30 is provided on the cathode plate 28. The anode terminal 26 is connected to the anode terminal 27, and the cathode terminal 30 is connected to the cathode terminal 31. A sloping bottom surface 41 is provided in the drainage chamber 38. An ultrasonic generator 35 is provided at the lower part of the outlet chamber 32. An ultrasonic vibrating rod 37 is installed on the ultrasonic generator 35 through the drainage chamber 38.

[0029] The inlet 21 is located on the inlet chamber 23, and the level gauge 22 is installed inside the inlet chamber 23. The outlet 34 is located on the outlet chamber 32, and the overflow port 33 is located on the outlet chamber 32.

[0030] The bottom of the drainage chamber 38 is provided with a drainage outlet 39, and the base 36 is provided with a forklift hole 40.

[0031] The electrochemical treatment method for bypassing circulating water in the box-type power plant includes the following steps: The circulating water is drawn from the outlet header 2 of the circulating pump 1, through the water intake pipe 3, and enters the water inlet chamber 23 through the water inlet 21. Then, it passes through the flow stabilizer 24 to make the water flow evenly and steadily into the electrochemical treatment chamber 42 for electrochemical treatment. At the same time, wind power source 16 and photovoltaic power source 17 input green electricity to power control system 19, grid power source 20 inputs peak and valley electricity to power control system 19, energy storage cabinet 18 stores green electricity and peak and valley electricity, power control system 19 intelligently and dynamically adjusts the efficient use of electricity by box-type electrochemical treatment device 5, and manages the output and input of electricity by energy storage cabinet 18.

[0032] The flow rate Vr of the circulating water is controlled by the electric water intake valve 4, so that the liquid level Y measured by the level gauge 22 is lower than the preset liquid level Y. H The material flows into the electrochemical treatment chamber 42 at a certain flow rate and undergoes electrochemical treatment through the cathode plate 28 and anode plate 29 within the electrochemical treatment chamber 42.

[0033] The circulating water treated by the electrochemical treatment chamber 42 enters the outlet chamber 32, passes through the outlet 34, enters the outlet pipeline 10, and returns to the circulating water pool 15.

[0034] The electric valve 9 can control the flow rate Vc of the effluent and regulate the liquid level Y of the box-type electrochemical treatment device 5. When the liquid level Y > Y H When the overflow water overflows through overflow port 33 and overflow pipe 8 to outlet pipe 10, the opening degree of water intake electric valve 4 is reduced or the opening degree of outlet electric valve 9 is increased. When the liquid level Y < Y H When this is the case, the opening of the electric water intake valve 4 can be increased to increase the inlet water flow rate Vr.

[0035] Anions in the circulating water of electrochemical treatment chamber 42: Cl — OH — Under the influence of an electric field, the molecules accumulate on anode plate 29, lose electrons, and produce Cl2, O2, H2O2, O3, and hydroxyl radicals (·OH); cations in circulating water include: H+. + Mg 2+ Ca 2+ Under the influence of an electric field, H2O accumulates on cathode plate 28, gains electrons, and produces H2 and OH-. — Mg(OH)2, Ca(OH)2, and Ca(CO3)2 precipitate; gases such as Cl2, O2, and H2 generated during electrolysis are discharged through exhaust fan 7 to prevent accumulation.

[0036] After the box-type electrochemical treatment device 5 has been running for a certain period of time (H), a certain amount of Mg(OH)₂ and Ca(OH)₂ precipitates are deposited on the anode plate 29. At this time, the power control system 19 stops supplying power, the water intake electric valve 4 closes, and the ultrasonic generator 35 operates, generating ultrasonic vibration waves from the ultrasonic vibrator 37. The ultrasonic vibration waves loosen and dislodge the Mg(OH)₂ and Ca(OH)₂ precipitates deposited on the cathode plate 28 into the drainage chamber 38. The sewage discharge electric valve 13 is opened periodically to discharge the deposited Mg(OH)₂ and Ca(OH)₂ precipitates into the sewage tank 14. Through this electrochemical treatment process, Mg in the circulating water is removed. 2+ Ca 2+ Ions reduce the hardness of circulating water.

[0037] Water quality monitoring instrument box 11 detects the phenolphthalein alkalinity of the water effluent from outlet 34. f With total alkalinity JD q When JD q >Set total alkalinity JD Q When the value is reached, the current I from the power control system 19 to the cathode plate 28 and the anode plate 29 increases to I. q + i, until JD q <JD Q Then the current I according to I q Value runs, when JD f >Setting the phenolphthalein alkalinity JD F When the value is equal to the current I=I, the current is calculated according to the formula: D The value runs until JD. f <JD F Afterwards, the power control system 19 adjusts the current I value to restore it to I. f During operation, the power supply control system 19 controls the output current range I. min <I q <I q + i < I f <I D <I max .

[0038] The anode plate 29 of the box-type electrochemical treatment device 5 generates Cl2, O2, H2O2, O3 and hydroxyl radicals ·OH, which kill and inhibit microorganisms and algae in the circulating water, and can also reduce the COD and Cl ion concentration of the circulating water.

[0039] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and disclosure of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0040] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0041] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A box-type power plant circulating water bypass electrochemical treatment system, characterized in that, Includes water intake pipe (3), circulating pump (1), box-type electrochemical treatment device (5), water outlet pipe (10), circulating water tank (15), water quality monitoring instrument box (11), and sewage tank (14): One end of the water intake pipe (3) is connected to the outlet header (2) of the circulating pump (1). A water intake electric valve (4) is installed on the water intake pipe (3). The other end of the water intake pipe (3) is connected to the inlet (21) of the box-type electrochemical treatment device (5). The outlet (34) of the box-type electrochemical treatment device (5) is connected to the inlet of the outlet pipeline (10) via the outlet electric valve (9). The outlet of the outlet pipeline (10) is connected to the circulating water pool (15). The outlet (34) of the box-type electrochemical treatment device (5) is connected to the inlet of the water quality monitoring instrument box (11). The drain outlet (39) of the water quality monitoring instrument box (11) is connected to the sewage pool (14) via the sewage discharge electric valve (13) and the sewage discharge pipeline (12).

2. The box-type power plant circulating water bypass electrochemical treatment system according to claim 1, characterized in that, It also includes a wind power source (16), a photovoltaic power source (17), an energy storage cabinet (18), a grid power source (20), and a power control system (19). The wind power source (16), the photovoltaic power source (17), the energy storage cabinet (18), and the grid power source (20) are respectively connected to the power control system (19), and the power control system (19) is connected to the power terminal (6) of the box-type electrochemical treatment device (5).

3. The box-type power plant circulating water bypass electrochemical treatment system according to claim 2, characterized in that, It also includes an overflow pipe (8), one end of which is connected to the overflow port (33) of the box-type electrochemical treatment device (5), and the other end of which is connected to the inlet of the outlet pipe (10).

4. The box-type power plant circulating water bypass electrochemical treatment system according to claim 3, characterized in that, The box-type electrochemical treatment device (5) includes a box body (25), inside which is a base (36), a drainage chamber (38) on the base (36), and an inlet chamber (23), an electrochemical treatment chamber (42), and an outlet chamber (32) above the drainage chamber (38). The inlet chamber (23), the electrochemical treatment chamber (42), and the outlet chamber (32) are connected in sequence. A flow stabilizing grid (24) is provided in the inlet chamber (23). A cathode plate (28) and an anode plate (29) are provided in the electrochemical treatment chamber (42). The top of (42) is provided with an exhaust fan (7), an anode terminal (27) and a cathode terminal (31). The anode terminal (27) and the cathode terminal (31) are connected to the power control system (19) via the power terminal (6). An anode terminal (26) is provided on the anode plate (29), and a cathode terminal (30) is provided on the cathode plate (28). The anode terminal (26) is connected to the anode terminal (27), and the cathode terminal (30) is connected to the cathode terminal (31). A sloping bottom surface (41) is provided in the drainage chamber (38). The inlet (21) is located on the inlet chamber (23), the outlet (34) is located on the outlet chamber (32), the overflow (33) is located on the outlet chamber (32), and the drain (39) is located at the bottom of the drain chamber (38).

5. The box-type power plant circulating water bypass electrochemical treatment system according to claim 4, characterized in that, A level gauge (22) is installed in the water inlet chamber (23).

6. The box-type power plant circulating water bypass electrochemical treatment system according to claim 4, characterized in that, The base (36) is provided with a forklift hole (40).

7. The box-type power plant circulating water bypass electrochemical treatment system according to claim 4, characterized in that, An ultrasonic generator (35) is installed at the lower part of the water outlet chamber (32), and an ultrasonic vibrating rod (37) is installed on the ultrasonic generator (35) through the drainage chamber (38).

8. A method for electrochemical treatment of circulating water in a box-type power plant, characterized in that, The electrochemical treatment system for bypassing circulating water in a box-type power plant according to claim 7 includes the following steps: The circulating water is drawn from the outlet pipe (2) of the circulating pump (1), through the water intake pipe (3), and enters the water inlet chamber (23) through the inlet (21). Then, it passes through the flow stabilizer (24) to make the water flow evenly and smoothly into the electrochemical treatment chamber (42) for electrochemical treatment. At the same time, wind power (16) and photovoltaic power (17) input green electricity into the power control system (19), grid power (20) input peak and valley electricity into the power control system (19), and energy storage cabinet (18) stores green electricity and peak and valley energy. After being treated in the electrochemical treatment chamber (42), the circulating water enters the outlet chamber (32), passes through the outlet (34), enters the outlet pipeline (10), and returns to the circulating water pool (15).

9. The method for electrochemical treatment of circulating water in a box-type power plant according to claim 8, characterized in that, Water quality monitoring instrument box (11) detects the phenolphthalein alkalinity of the water outlet (34) JD f With total alkalinity JD q When JD q >Set total alkalinity JD Q When the value is reached, the current I from the power control system (19) to the cathode plate (28) and anode plate (29) increases to I. q + i, until JD q <JD Q Then the current I according to I q Value runs, when JD f >Setting the phenolphthalein alkalinity JD F When the value is equal to the current I=I, the current is calculated according to the formula: D The value runs until JD. f <JD F Afterwards, the power control system (19) adjusts the current I value to restore it to I. f The power supply control system (19) controls the output current range I. min <I q <I q + i < I f <I D <I max .

10. The method for electrochemical treatment of circulating water in a box-type power plant according to claim 8, characterized in that, After the box-type electrochemical treatment device (5) has been running for a certain period of time H, Mg(OH)2 and Ca(OH)2 precipitates are deposited on the anode plate (29). At this time, the power control system (19) stops supplying power, the water intake electric valve (4) is closed, and the ultrasonic generator (35) works to generate ultrasonic vibration waves from the ultrasonic vibration rod (37). The ultrasonic vibration waves cause the Mg(OH)2 and Ca(OH)2 precipitates deposited on the cathode plate (28) to loosen and fall into the drainage chamber (38). The sewage discharge electric valve (13) is opened at regular intervals to discharge the deposited Mg(OH)2 and Ca(OH)2 precipitates into the sewage tank (14).

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