Industrial circulating water treatment system

Abstract

The invention discloses an industrial circulating water treatment system which comprises combined electrochemical treatment equipment, a heat exchanger, a filtering unit and a vector cooling tower, the combined electrochemical treatment equipment comprises a primary treatment unit and a secondary treatment unit; the primary treatment unit comprises low-voltage electrochemical equipment and a circulating water pump arranged on an outlet pipeline of the low-voltage electrochemical equipment; the secondary treatment unit comprises an electrochemical treatment module and a magnetization treatment module which are arranged in parallel; inlets of the electrochemical treatment module and the magnetization treatment module are respectively connected with an outlet pipeline of the low-voltage electrochemical equipment; an inlet of the heat exchanger is connected with the secondary treatment unit, and an outlet is connected with the filtering unit and the vector cooling tower; an outlet of the filtering unit is connected with the vector cooling tower; the vector cooling tower is arranged above the circulating water pool, and a condensate water ceiling is arranged at the top of the vector cooling tower. Discharge and splashing of circulating water are greatly reduced, the sewage discharge amount is reduced, and the purpose of saving water resources is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment and relates to an industrial circulating water treatment system. Background Art

[0002] With the development of industry, the consumption of water has increased dramatically. Coupled with the scarcity of water resources, saving water resources has become a top priority for the development of chemical companies. At present, chemical companies use various industrial circulating water methods to save water resources in the production process. In actual production, mechanical cooling fans and closed cooling towers are usually used to cool and treat circulating water. Mechanical cooling fans will inevitably lose a lot of water resources during operation. Closed cooling towers have problems such as convection of soft water systems and scaling. Circulating water mainly involves three parts of water resource losses: one is the formation of water vapor entering the atmosphere; the second is sewage discharge, and the third is splashing; among them, industrial circulating water needs to evaporate water to take away heat in order to achieve the purpose of cooling, which inevitably causes waste of water resources; in addition, since industrial circulating water needs to be treated with chemicals after use, the concentration multiple of chemical treatment is controlled at 3 to 5, and a certain amount of sewage discharge is required to maintain the stable operation of the circulating water system. At the same time, chemicals also have problems such as environmental pollution.

[0003] In view of the above situation, it is urgent to develop a new device for treating industrial circulating water, which can overcome the shortcomings of the above-mentioned industrial circulating water treatment system in the process of treating circulating water, reduce the discharge of circulating water, reduce the amount of sewage discharged, and achieve the purpose of saving water resources. Summary of the invention

[0004] In view of the waste of water resources such as water vapor emission, splashing, and sewage discharge in the industrial circulating water treatment process in the prior art, the purpose of the present invention is to provide an industrial circulating water treatment system, which uses a combined electrochemical treatment equipment, AFM filter and vector cooling tower to treat circulating water, thereby realizing the energy-saving and water-saving functions of the industrial circulating water system, greatly reducing the emission and splashing of circulating water, while reducing the amount of sewage discharge, thereby achieving the purpose of saving water resources.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] The present invention provides an industrial circulating water treatment system, comprising a combined electrochemical treatment device, a heat exchanger, a filter unit and a vector cooling tower;

[0007] The combined electrochemical treatment device comprises a primary treatment unit and a secondary treatment unit connected to the primary treatment unit; the primary treatment unit comprises a low-voltage electrochemical device arranged in the circulating water pool and a circulating water pump arranged on the outlet pipeline of the low-voltage electrochemical device; the secondary treatment unit comprises an electrochemical treatment module and a magnetization treatment module arranged in parallel, and the inlets of the electrochemical treatment module and the magnetization treatment module are respectively connected to the outlet pipeline of the low-voltage electrochemical device;

[0008] The inlet of the heat exchanger is connected to the secondary treatment unit of the combined electrochemical treatment, and the outlet of the heat exchanger is connected to the filtering unit and the vector cooling tower respectively;

[0009] The filter unit is used to filter the water after being treated by the heat exchanger; the outlet of the filter unit is connected to the vector cooling tower;

[0010] The vector cooling tower is arranged above the circulating water pool, and a condensing water ceiling is arranged on the top of the vector cooling tower.

[0011] Preferably, the low-voltage electrochemical device is provided with a cathode plate and an anode plate for electrochemically treating the circulating water.

[0012] Preferably, the outlet pipeline of the low-voltage electrochemical device includes multiple outlet branches connected to the outlet of the low-voltage electrochemical device and a first pipeline connected to the multiple outlet branches; each outlet branch is provided with a circulating water pump, and valves are provided on the pipelines on both sides of the circulating water pump.

[0013] Preferably, the electrochemical treatment module comprises a high voltage electrochemical device and a first bypass pipe;

[0014] The high-voltage electrochemical device is arranged in parallel with the first bypass pipe through a first branch pipe arranged at its inlet and outlet, wherein the parallel inlet is connected to the outlet pipeline of the low-voltage electrochemical device, and the parallel outlet is connected to the inlet of the heat exchanger;

[0015] Valves are provided on the first branch and the first bypass pipe arranged at the inlet and the outlet of the high-voltage electrochemical device.

[0016] Preferably, the magnetization treatment module includes a magnetic water treatment device and a second bypass pipe;

[0017] The magnetic water treatment device is arranged in parallel with the second bypass pipe through a second branch pipe arranged at its inlet and outlet, wherein the parallel inlet is connected to the outlet pipeline, and the parallel outlet is connected to the inlet of the heat exchanger;

[0018] The second branch pipe and the second side pipe arranged at the inlet and outlet of the magnetic water treatment device are both provided with valves.

[0019] Preferably, the filtering unit comprises an inlet pipe connected to the outlet of the heat exchanger, a plurality of AFM filters connected to the inlet pipe and arranged in parallel, and a return pipe connected to the vector cooling tower;

[0020] The AFM filter uses glass sand as filter material. The particle size of the glass sand is 0.25-1 mm, and its surface area is more than 300 times that of sand particles.

[0021] Preferably, the AFM filter is connected to the inlet pipe through an inlet branch pipe, and a valve is provided on the inlet branch pipe; the top of the AFM filter is connected to the return pipe through a first return water branch pipe, and the upper part of the AFM filter is connected to the return water pipe through a second return water branch pipe, and valves are provided on the first return water branch pipe and the second return water branch pipe.

[0022] Preferably, the vector cooling tower is designed with a packing system around it for secondary cooling of circulating water; the packing in the packing system is made of one of stainless steel, magnesium alloy, PVC, PP, wood, and ceramics.

[0023] The industrial circulating water treatment system provided by the present invention has the following beneficial effects:

[0024] 1. The industrial circulating water treatment system of the present invention treats the water quality of circulating water through a combined electrochemical treatment device consisting of a low-voltage electrochemical treatment device, a high-voltage electrochemical device and a high-strength magnetic water treatment device. After heat exchange in a heat exchanger, the return water is filtered through an AFM filter and finally returned to the circulating water pool through an appropriate cooling tower, thereby realizing the energy-saving and water-saving functions of industrial circulating water. At the same time, different industrial circulating waters can be treated through different combinations to achieve closed-loop treatment of the entire industrial circulating water.

[0025] 2. The present invention adopts a vector cooling tower, which can greatly reduce the emission and splashing of circulating water vapor, and achieve energy and water saving of industrial circulating water;

[0026] 3. The present invention uses a combined electrochemical treatment device consisting of a low-voltage electrochemical treatment device, a high-voltage electrochemical device and a high-strength magnetic water treatment device to treat circulating water, which can not only achieve the descaling function, but also achieve the sterilization and algae removal function, completely replacing the traditional chemical treatment system, thereby greatly reducing the amount of sewage discharge and avoiding environmental pollution caused by chemicals in the sewage;

[0027] 4. The industrial circulating water treatment system of the present invention has a wide treatment range and wide adaptability, and can adapt to different water qualities, different temperatures, high turbidity, and medium and high hardness water, etc.;

[0028] 5. The industrial circulating water treatment system of the present invention can adopt different combination modes according to the characteristics of industrial circulating water, and can achieve different water quality treatment effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 It is a structural schematic diagram of the industrial circulating water treatment system of the present invention;

[0031] In the figure, 1. vector cooling tower, 2. low-voltage electrochemical equipment, 3. circulating water pump, 4. high-voltage electrochemical equipment, 5. valve, 6. magnetic water treatment device, 7. heat exchanger, 8. high-efficiency filter, 9. first pipeline, 10. outlet branch, 11. first bypass, 12. first branch, 13. second bypass, 14. second branch, 15. inlet pipeline, 16. inlet branch, 17. first return branch, 18. second return branch, 19. return pipeline, 20. circulating water pool. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with embodiments.

[0033] Combination Figure 1 As shown, an industrial circulating water treatment system of the present invention comprises a combined electrochemical treatment device, a heat exchanger 7, a filter unit and a vector cooling tower 1. The combined electrochemical treatment device comprises a primary treatment unit and a secondary treatment unit connected to the primary treatment unit; the primary treatment unit comprises a low-voltage electrochemical device 2 arranged in a circulating water pool 20 and a circulating water pump 3 arranged on the outlet pipeline of the low-voltage electrochemical device 2; the secondary treatment unit comprises an electrochemical treatment module and a magnetization treatment module arranged in parallel, and the inlets of the electrochemical treatment module and the magnetization treatment module are respectively connected to the outlet pipeline of the low-voltage electrochemical device 2. The inlet of the heat exchanger 7 is connected to the secondary treatment unit of the combined electrochemical treatment, and the outlet of the heat exchanger 7 is respectively connected to the filter unit and the vector cooling tower 1. The filter unit is used to filter the water treated by the heat exchanger 7; the outlet of the filter unit is connected to the vector cooling tower 1. The vector cooling tower 1 is arranged above the circulating water pool 20, and a condensing water ceiling is provided on the top of the vector cooling tower 1. The present invention treats circulating water by combining a low-voltage electrochemical device 2, an electrochemical treatment module, and a magnetization treatment module in a combined electrochemical treatment device. After heat exchange through a heat exchanger 7, the return water is filtered and treated by a filter unit to achieve energy-saving and water-saving functions of the industrial circulating water system, and the treatment of different industrial circulating water systems can be achieved through different combinations.

[0034] Combination Figure 1 As shown, in the combined electrochemical treatment equipment of the present invention, the low-voltage electrochemical device 2 is installed in a pool type, and is provided with a cathode plate and an anode plate for electrochemically treating the circulating water; the low-voltage electrochemical device 2 utilizes Faraday's law of electrolysis and is installed in a pool type to achieve full treatment of the circulating water, with many treatment times and long time, which meets the requirements of full water area treatment, high adsorption, high anti-scaling rate, and strong sterilization and algae removal. By cleaning the low-voltage electrochemical device 2, the scaling ions in the circulating water can be extracted from the pool, providing a concentration multiple to achieve a water-saving effect. The outlet pipeline of the low-voltage electrochemical device 2 includes a plurality of outlet branches 10 connected to the outlet of the low-voltage electrochemical device 2 and a first pipeline 9 connected to the plurality of outlet branches 10; each outlet branch 10 is provided with a circulating water pump 3, and valves 5 are provided on the pipelines on both sides of the circulating water pump 3; the valve 5 on the outlet branch 10 is different from the optional treatment method, so as to achieve the effect of the water treatment system.

[0035] Combination Figure 1 As shown, the electrochemical treatment module includes a high-voltage electrochemical device 4 and a first bypass pipe 11; the high-voltage electrochemical device 4 can cut water molecules into single polar water molecules, and the polar water molecules surround the positive and negative ions and flow in the water in an orderly and directional manner with an effective distance of 2000 meters, which can effectively supplement the attenuation of the long-distance treatment effect of the low-voltage electrochemical treatment and the deficiency of the low-voltage electrochemical treatment. The single polar water molecule can penetrate the old scale of the original industrial circulating water system to achieve the function of removing the old scale, while changing the living environment of bacteria and algae, and strengthening the sterilization and algae removal function of the low-voltage electrochemical treatment. The high-voltage electrochemical device 4 is arranged in parallel with the first bypass pipe 11 through the first branch pipe 12 set at its inlet and outlet, and its parallel inlet is connected to the outlet pipeline of the low-voltage electrochemical device 2, and the parallel outlet is connected to the inlet of the heat exchanger 7; the first branch and the first bypass pipe 11 set at the inlet and outlet of the high-voltage electrochemical device 4 are both provided with valves 5. The electrochemical treatment module can effectively control whether the high-voltage electrochemical device 4 participates in the treatment of the circulating water by opening and closing the valve 5 on the first branch and the first bypass pipe 11.

[0036] Combination Figure 1 As shown, the magnetization treatment module includes a high-strength magnetic water treatment device 6 and a second bypass pipe 13; the magnetic water treatment device 6 can magnetize the circulating water to form magnetic polar water molecules, and the enhanced penetration of the magnetic polar water molecules can achieve the function of removing old scale, and at the same time generate microcurrent to change the living environment of bacteria and algae, and achieve the function of sterilization and algae removal. The magnetic water treatment device 6 is arranged in parallel with the second bypass pipe 13 through the second branch pipe 14 set at its inlet and outlet, and its parallel inlet is connected to the outlet pipeline, and the parallel outlet is connected to the inlet of the heat exchanger 7; the second branch pipe 14 and the second bypass pipe 13 set at the inlet and outlet of the magnetic water treatment device 6 are both provided with valves 5. The magnetization treatment module can effectively control whether the magnetic water treatment device 6 participates in the treatment of the circulating water by opening and closing the valves 5 on the second branch pipe 14 and the second bypass pipe 13.

[0037] Combination Figure 1 As shown, the industrial circulating water treatment system of the present invention can adopt different combination modes according to the characteristics of different industrial circulating waters, specifically by opening or closing the valve 5 on the electrochemical treatment module and the magnetic treatment module pipeline; for example, the high-pressure electrochemical equipment 4 cannot treat high-temperature and high-turbidity industrial circulating water, so the high-temperature and high-turbidity industrial circulating water can be treated with low-pressure electrochemical treatment equipment and magnetic water treatment device 6. Through the combined use mode, the traditional chemical treatment system is completely replaced, thereby reducing the discharge volume and solving the problem of chemical pollution of the environment.

[0038] Combination Figure 1 As shown, the filtration unit includes an inlet pipe 15 connected to the outlet of the heat exchanger 7, a plurality of AFM filters 8 connected to the inlet pipe 15 and arranged in parallel, and a return pipe 19 connected to the vector cooling tower 1. The AFM filter 8 mainly removes turbidity, particulate matter and other impurities in the industrial circulating water system, effectively protecting the efficient vector cooling tower 1 and the combined water treatment equipment, wherein the efficient AFM filter 8 uses glass sand as filter material; the glass sand is processed to achieve the best particle size and shape, the particle size of the glass sand is 0.25-1mm, and the surface area is more than 300 times that of the sand. The large surface area of ​​the glass sand is endowed with a permanent charge (zeta potential), and can electrostatically attract organic matter and small particles, solving the problems of low filtration accuracy, small flow rate, easy clogging of filter material, short working cycle, and the need for shutdown for cleaning existing in the traditional filter 8. Combined with Figure 1 As shown, the AFM filter 8 is connected to the inlet pipe 15 through the inlet branch pipe 16, and the inlet branch pipe 16 is provided with a valve 5; the top of the AFM filter 8 is connected to the return pipe 19 through the first return branch pipe 17, and the upper part of the AFM filter 8 is connected to the return pipe 19 through the second return branch pipe 18, and the first return branch pipe 17 and the second return branch pipe 18 are both provided with a valve 5; the number of AFM filters 8 in the filter unit can be adjusted according to actual conditions, such as setting 2 or 3, etc., and can also be adjusted through the valve 5 on the pipe when in use.

[0039] Combination Figure 1As shown, the vector cooling tower 1 is directly connected to the return water pipe 19, and the residual pressure of the circulating water pump 3 is used to drive the efficient vector cooling tower 1 to rotate at high speed. There is no mechanical structure connection. The vector cooling tower 1 is driven by the residual pressure of the return water to circulate and rotate at high speed, and the circulating water is atomized to increase the specific surface area of ​​the circulating water to achieve 360-degree all-round heat exchange, and the temperature difference between the inlet and return water can be greater than 36°C, which is suitable for high-temperature industrial circulating water systems; the vector cooling tower 1 is designed with an efficient packing system around it to perform secondary heat exchange cooling on the circulating water. The packing in the packing system can be selected from stainless steel, magnesium alloy materials, PVC, PP, wood, ceramics and other new materials according to different temperature differences; the top of the vector cooling tower 1 is designed with an efficient condensation water ceiling, which can reduce evaporation by 40-60%, reduce floating water by >90%, greatly reduce circulating water vapor emission and splashing, and achieve energy and water saving of industrial circulating water.

[0040] In summary, the industrial circulating water treatment system of the present invention realizes the closed-loop treatment of the entire industrial circulating water through the mode of vector cooling tower, low-voltage electrochemical equipment, high-voltage electrochemical equipment, and AFM filter combination. By adopting different combination modes, the water quality treatment of different water qualities and different temperature difference requirements can achieve the expected effect. The present invention integrates multiple groups of water treatment systems in an orderly manner and compares the separate use modes of multiple systems. It realizes the goals of energy-saving, water-saving, environmentally friendly, and economical water treatment systems, which complies with the relevant national policies on water resource protection and utilization.

[0041] It should be noted that those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. An industrial circulating water treatment system, characterized in that: It includes a combined electrochemical treatment device, a heat exchanger, a filtration unit and a vector cooling tower; The combined electrochemical treatment device comprises a primary treatment unit and a secondary treatment unit connected to the primary treatment unit; the primary treatment unit comprises a low-voltage electrochemical device arranged in the circulating water pool and a circulating water pump arranged on the outlet pipeline of the low-voltage electrochemical device; the secondary treatment unit comprises an electrochemical treatment module and a magnetization treatment module arranged in parallel, and the inlets of the electrochemical treatment module and the magnetization treatment module are respectively connected to the outlet pipeline of the low-voltage electrochemical device; The inlet of the heat exchanger is connected to the secondary treatment unit of the combined electrochemical treatment, and the outlet of the heat exchanger is connected to the filtering unit and the vector cooling tower respectively; The filter unit is used to filter the water after being treated by the heat exchanger; the outlet of the filter unit is connected to the vector cooling tower; The vector cooling tower is arranged above the circulating water pool, and a condensing water ceiling is arranged on the top of the vector cooling tower.

2. The industrial circulating water treatment system according to claim 1, characterized in that: The low-voltage electrochemical device is provided with a cathode plate and an anode plate for electrochemically treating circulating water.

3. The industrial circulating water treatment system according to claim 1, characterized in that: The outlet pipeline of the low-voltage electrochemical device includes multiple outlet branches connected to the outlet of the low-voltage electrochemical device and a first pipeline connected to the multiple outlet branches; each outlet branch is provided with a circulating water pump, and valves are provided on the pipelines on both sides of the circulating water pump.

4. The industrial circulating water treatment system according to claim 1, characterized in that: The electrochemical treatment module includes a high-voltage electrochemical device and a first bypass pipe; The high-voltage electrochemical device is arranged in parallel with the first bypass pipe through a first branch pipe arranged at its inlet and outlet, wherein the parallel inlet is connected to the outlet pipeline of the low-voltage electrochemical device, and the parallel outlet is connected to the inlet of the heat exchanger; Valves are provided on the first branch and the first bypass pipe arranged at the inlet and the outlet of the high-voltage electrochemical device.

5. The industrial circulating water treatment system according to claim 1, characterized in that: The magnetization treatment module includes a magnetic water treatment device and a second side pipe; The magnetic water treatment device is arranged in parallel with the second bypass pipe through a second branch pipe arranged at its inlet and outlet, wherein the parallel inlet is connected to the outlet pipeline, and the parallel outlet is connected to the inlet of the heat exchanger; The second branch pipe and the second side pipe arranged at the inlet and outlet of the magnetic water treatment device are both provided with valves.

6. The industrial circulating water treatment system according to claim 1, characterized in that: The filtration unit comprises an inlet pipe connected to the outlet of the heat exchanger, a plurality of AFM filters connected to the inlet pipe and arranged in parallel, and a return pipe connected to the vector cooling tower; The AFM filter uses glass sand as filter material. The particle size of the glass sand is 0.25-1 mm, and the surface area is more than 300 times that of sand particles.

7. The industrial circulating water treatment system according to claim 6, characterized in that: The AFM filter is connected to the inlet pipe through an inlet branch pipe, and a valve is provided on the inlet branch pipe; the top of the AFM filter is connected to the return pipe through a first return branch pipe, and the upper part of the AFM filter is connected to the return pipe through a second return branch pipe, and valves are provided on the first return branch pipe and the second return branch pipe.

8. The industrial circulating water treatment system according to any one of claims 1 to 7, characterized in that: The vector cooling tower is designed with a packing system for secondary cooling of circulating water around it; the packing in the packing system is made of one of stainless steel, magnesium alloy material, PVC, PP, wood and ceramics.

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