CN113023999A - Near-zero emission treatment method for circulating water - Google Patents
Near-zero emission treatment method for circulating water Download PDFInfo
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- CN113023999A CN113023999A CN202110231993.3A CN202110231993A CN113023999A CN 113023999 A CN113023999 A CN 113023999A CN 202110231993 A CN202110231993 A CN 202110231993A CN 113023999 A CN113023999 A CN 113023999A
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/484—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C02F2303/04—Disinfection
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- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention relates to the field of energy-saving and environment-friendly water treatment, and discloses a near-zero emission treatment method for circulating water, which comprises the following steps: generating an alternating electromagnetic field in the cooling water pool by using a sub-audio frequency wave system, wherein the alternating electromagnetic field acts on circulating water in the cooling water pool, a sub-audio frequency generator controls the magnetic induction intensity of the alternating electromagnetic field to be 1-500Gs, a circulating pump is used for extracting the circulating water from the cooling water pool, and the circulating water sequentially flows through a circulating water outlet pipe, a heat exchanger and a circulating water return pipe; forming an alternating electromagnetic field on the circulating water return pipe by using a sub-audio frequency wave system, wherein the alternating electromagnetic field acts on circulating water in the circulating water return pipe; the circulating water is conveyed to the cooling tower through the circulating water return pipe to be cooled, and the cooled circulating water flows into the cooling water pool.
Description
Technical Field
The invention relates to the field of energy-saving and environment-friendly water treatment, in particular to a near zero emission treatment method for circulating water.
Background
In the process of recycling the cooling water, along with the evaporation and concentration of the water, the concentration of various ions is increased, and a series of problems of scaling, corrosion and the like are inevitably generated due to the increase of the water temperature caused by heat exchange.
The chemical method is adopted for treatment, the operation and maintenance cost is high, a lot of negative effects are brought, and the discharged water contains more chemical substances, so that the problem of secondary pollution is easily caused; and the concentration multiple of the circulating water is low, which is not beneficial to water saving. The existing physical treatment products have the problems of single performance effect, small unit treatment amount, easy damage of electrodes or energy attenuation and the like, and can not completely replace a chemical agent treatment mode.
Disclosure of Invention
Therefore, a near zero emission treatment method for circulating water is needed to be provided, and the problems that a large amount of sewage is easy to produce, the concentration multiple is low and water saving is not facilitated in the existing cooling water treatment method are solved.
In order to achieve the aim, the invention provides a near-zero emission treatment method of circulating water, which is applied to a near-zero emission treatment device of the circulating water, the near-zero emission treatment device comprises a cooling tower, a circulating pipeline and a subaudio frequency wave system, the circulating pipeline comprises a circulating water outlet pipe, a circulating water return pipe and a heat exchanger, the heat exchanger is provided with an exchanger inlet and an exchanger outlet, the cooling tower is provided with a circulating water return port, a cooling water pool is provided with a circulating water outlet, two ends of the circulating water outlet pipe are connected with the circulating water outlet and the exchanger inlet, two ends of the circulating water return pipe are connected with the exchanger outlet and,
the method comprises the following steps:
the method comprises the steps that an alternating electromagnetic field is generated in a cooling water pool by using a sub-audio frequency wave system, the alternating electromagnetic field acts on circulating water in the cooling water pool, the sub-audio frequency wave system comprises a sub-audio frequency generator and a plurality of energy boosters, the sub-audio frequency generator is electrically connected with the energy boosters, the energy boosters are divided into two parts which are respectively arranged in the cooling water pool and a circulating water return pipe, the sub-audio frequency generator controls the magnetic induction intensity of the alternating electromagnetic field to be 1-500Gs, and the frequency is 1Hz-100 kHz;
circulating water is pumped from the cooling water pool by using a circulating pump, the circulating water sequentially flows through a circulating water outlet pipe, a heat exchanger and a circulating water return pipe, and the circulating pump is arranged on the circulating water outlet pipe;
forming an alternating electromagnetic field on the circulating water return pipe by using a sub-audio frequency wave system, wherein the alternating electromagnetic field acts on circulating water in the circulating water return pipe;
and the circulating water is conveyed to the cooling tower through the circulating water return pipe to be cooled, and the cooled circulating water flows into the cooling water pool.
Further, sulfuric acid is added into the circulating water pool by using an acid adding device, so that the pH value of the circulating water is kept between 7.0 and 8.5, the acid adding device comprises an acid storage tank and an acid adding pipe, and the acid adding pipe is connected with the acid storage tank and the cooling water pool.
Further, an automatic cleaning device is used for cleaning the heat exchanger, and the cleaning device is a rubber ball cleaning device or a cleaning spiral band.
Further, the rubber ball belt cleaning device includes the ball collecting net and the rubber ball conveyer pipe, the rubber ball delivery pump, the dress ball room that connect gradually, interchanger entry and interchanger export are connected with entry connecting pipe and exit linkage respectively, circulation outlet pipe, circulation wet return communicate with heat exchanger through entry connecting pipe, exit linkage respectively, it installs in exit linkage to be the ball collecting net, rubber ball delivery pump intercommunication entry connecting pipe, dress ball room and entry connecting pipe intercommunication, the indoor rubber ball that is equipped with of dress ball.
Further, the cleaning device is a cleaning spiral band, the heat exchanger is a tube type heat exchanger, a plurality of cooling tubes are arranged in the tube type heat exchanger, the cleaning spiral band is arranged in the cooling tubes, and two ends of the cleaning spiral band are rotatably connected with the cooling tubes.
Further, controlling the relationship between the magnetic induction intensity of the alternating electromagnetic field and the total hardness in the circulating water by using a sub-audio generator as follows:
when the total hardness is less than 20mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 1-50 Gs;
when the total hardness is more than or equal to 20mmol/L and less than 25mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 50-100 Gs;
when the total hardness is more than or equal to 25mmol/L and less than 30mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 100-300 Gs;
when the total hardness is more than or equal to 30mmol/L and less than 40mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 300-400 Gs;
when the total hardness is more than or equal to 40mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 400-500 Gs;
the total hardness is as CaCO3And (6) counting.
Furthermore, the volume of the circulating water subjected to the action of the alternating electromagnetic field in the cooling pool is controlled by using a sub-audio generator to be 1/8-1/2 of the volume of the circulating water pumped by the circulating pump per hour.
Further, use other filter pipeline with from the circulating water part drainage of interchanger export to the cooling water pond in, other filter pipeline includes filter tube and filter, the both ends of filter tube are for filtering the water inlet respectively and filter the return water mouth, the filter is installed on the filter tube, filters return water mouth and cooling water pond intercommunication, filter the water inlet and export the intercommunication with the interchanger.
Furthermore, the flow of the circulating water in the filter pipe is controlled to be 3% -5% of the total flow of the circulating water through a bypass filter valve.
Further, the nano copper ions are released in the cooling water pool by using the sterilization and algae inhibition system to kill bacteria and algae in the cooling water pool.
The technical scheme has the following beneficial effects:
1. according to the invention, an alternating electromagnetic field with the magnetic induction intensity of 1-500Gs and the frequency of 1Hz-100kHz is formed on the cooling water pool and the circulating water return pipe, when the alternating electromagnetic field acts on circulating water, water molecular groups (chains) in the circulating water can be increased, and the dipole polarity of water molecules is enhanced, so that the solubility of water to salt is increased, the concentration multiple is increased, and the consumption of the circulating water is saved;in addition, the water molecules with enhanced dipole polarity can surround Ca2+、Mg2+And CO3 2-The probability of collision and combination is reduced, so as to effectively prevent scale formation, and the sub-audio frequency electromagnetic wave can change CaCO under higher energy state3The crystallization forming process of (1) makes it generate loose foamy aragonite, has inhibited the formation of fine and close calcite scale, and loose aragonite flows along with the circulating water easily, is difficult for adhering to on the inner wall of equipment, makes things convenient for the clearance of incrustation scale, and simultaneously, alternating electromagnetic field and electromagnetic wave make the oxygen ion in the circulating water can obtain certain energy, and the steel inside wall can form the iron oxide of a layer compactness (the copper product forms the cuprous oxide of oxidation compactness), can effectual prevention equipment corruption.
2. In the invention, as the solubility of the calcium carbonate is reduced along with the rise of the temperature, the temperature of the circulating water is higher after passing through the heat exchanger, the calcium carbonate is easy to accumulate and precipitate, and the by-pass filtration system can quickly filter out the precipitate in the circulating water and prevent the precipitate from adhering to the inner wall of the equipment to form scale.
3. In the invention, under the conditions of higher concentration multiple of circulating water operation and less discharged water amount, even if soft scale is separated out after the subaudio frequency wave treatment, the soft scale and sludge can be removed out of the heat exchanger tube by the cleaning device, thereby improving the heat exchange efficiency.
Drawings
Fig. 1 is a block diagram of a near-zero emission treatment apparatus according to an embodiment.
Fig. 2 is a structural view of the rubber ball cleaning device in a specific mode.
Fig. 3 is a structural view of a heat exchanger according to an embodiment.
FIG. 4 is a structural diagram of a cleaning spiral band in a specific manner.
Description of reference numerals:
1. a cooling tower; 11. a cooling water pool; 12. a circulating water outlet; 13. a circulating water return port;
2. a sub-audio wave system; 21. a sub-tone generator; 22. an energy booster;
3. a side filter pipeline; 31. a filter; 32. a filter tube; 33. a filter pump;
4. a rubber ball cleaning device; 41. collecting the ball net; 42. a rubber ball conveying pipe; 43. a rubber ball delivery pump; 44. a ball loading chamber; 45. rubber balls;
5. an acid adding device; 51. an acid storage tank; 52. adding an acid pipe;
6. a sterilization and algae inhibition system; 61. a sterilization and algae inhibition signal generator; 62. a sterilization and algae inhibition processor;
7. a circulation line; 71. circulating a water outlet pipe; 72. a circulation pump; 73. a heat exchanger; 731. an exchanger inlet; 732. an exchanger outlet; 733. an inlet connection pipe; 734. an outlet connection pipe; 735. a cooling tube; 74. a circulating water return pipe;
8. and cleaning the spiral ligament.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Example 1
Referring to fig. 1-4, the present embodiment provides a method for near-zero emission treatment of circulating water, which is applied to a near-zero emission treatment device for circulating water.
The near zero emission treatment device comprises a cooling tower 1, a circulating pipeline 7, a sub-audio frequency wave system 2, a side filtering pipeline 3, a cleaning device, an acid adding device 5 and a sterilization and algae inhibiting system 6, wherein a cooling water pool 11 is arranged at the bottom of the cooling tower 1, the circulating pipeline 7 comprises a circulating water outlet pipe 71, a circulating water return pipe 74 and a heat exchanger 73, the heat exchanger 73 is provided with an exchanger inlet 731 and an exchanger outlet 732, the cooling tower 1 is provided with a circulating water return port 13, the cooling water pool 11 is provided with a circulating water outlet 12, two ends of the circulating water outlet pipe 71 are connected with the circulating water outlet 12 and the exchanger inlet 731, two ends of the circulating water return pipe 74 are connected with the exchanger outlet 732 and the circulating water return port 13, the circulating water outlet pipe 71 is provided with a circulating pump 72, the sub-audio frequency wave system 2 comprises a sub-audio frequency generator 21 and two energy increasing devices 22, the sub-frequency generator 21 is electrically connected with, the number of the energy boosters 22 is two, and the two energy boosters 22 are installed on the cooling water bath 11 and the circulation water return pipe 74, respectively. The bypass filtering pipeline 3 comprises a filtering pipe 32 and a filter 31, wherein two ends of the filtering pipe 32 are respectively provided with a filtering water inlet and a filtering water return port, the filter 31 is arranged on the filtering pipe 32, the filtering water return port is communicated with the cooling water tank 11, the filtering water inlet is communicated with the exchanger outlet 732, and the filter 31 is a sand filtering filter 31, a laminated filter 31, a cyclone sand separating filter 31 or a net filter 31.
The cleaning device is rubber ball cleaning device 4 or cleaning spiral tie 8, rubber ball cleaning device 4 includes ball collecting net 41 and the rubber ball conveyer pipe 42 that connects gradually, rubber ball delivery pump 43, dress ball room 44, interchanger entry 731 and interchanger export 732 are connected with entry connecting pipe 733 and exit connecting pipe 734 respectively, circulation outlet pipe 71, circulation return water pipe 74 is respectively through entry connecting pipe 733, exit connecting pipe 734 and heat exchanger 73 intercommunication, it installs in exit connecting pipe 734 to receive ball collecting net 41, rubber ball delivery pump 43 intercommunication entry connecting pipe 733, dress ball room 44 and entry connecting pipe 733 intercommunication, be equipped with rubber ball 45 in the dress ball room 44. The rubber ball cleaning device 4 can clean the cooling tube 735 in the heat exchanger 73 without unloading the heat exchanger 73. The heat transfer effect of the heat exchanger 73 is improved, corrosion of the cooling pipe 735 due to scaling can be prevented, the service life of the cooling pipe 735 is prolonged, and the heat exchanger is ideal equipment for saving energy and improving labor conditions.
In another embodiment, the cleaning device is a cleaning spiral band 8, the heat exchanger is a tubular heat exchanger, a plurality of cooling tubes 735 are arranged in the tubular heat exchanger, the cleaning spiral band 8 is arranged in the cooling tubes 735, and two ends of the cleaning spiral band 8 are rotatably connected with the cooling tubes 735.
The acid adding device 5 comprises an acid storage tank 51 and an acid adding pipe 52, and the acid adding pipe 52 is connected with the acid storage tank 51 and the cooling water pool 11. The acid adding device 5 is used for controlling the alkalinity of the circulating water.
The sterilization and algae-inhibiting system 6 comprises a sterilization and algae-inhibiting signal generator 61 and a sterilization and algae-inhibiting processor 62, wherein the sterilization and algae-inhibiting signal generator 61 is electrically connected with the sterilization and algae-inhibiting processor 62, and the sterilization and algae-inhibiting processor 62 is arranged at the bottom of the cooling water tank 11 and is used for killing most of bacteria, so that the bacteria in the circulating water are not over-standard, and the purpose that the circulating water system cannot run due to microorganisms such as bacteria is achieved.
The method comprises the following steps:
the method comprises the steps that an alternating electromagnetic field is generated in a cooling water pool 11 by using a sub-audio frequency wave system 2, the alternating electromagnetic field acts on circulating water in the cooling water pool 11, the sub-audio frequency wave system 2 comprises a sub-audio frequency generator 21 and two energy boosters 22, the sub-audio frequency generator 21 is electrically connected with the energy boosters 22, the two energy boosters 22 are respectively installed in the cooling water pool 11 and on a circulating water return pipe 74, the sub-audio frequency generator 21 controls the magnetic induction intensity of the alternating electromagnetic field to be 1-500Gs, the frequency is 1Hz-100kHz, the circulating water volume under the action of the alternating electromagnetic field in the cooling water pool is 1/8-1/2 of the circulating water volume extracted by a circulating pump 72 per hour, and the control can be specifically realized by controlling the power of the circulating pump 72 or the.
In this embodiment, the relationship between the magnetic induction intensity of the alternating electromagnetic field and the total hardness in the circulating water is:
when the total hardness is less than 20mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 1-50 Gs;
when the total hardness is more than or equal to 20mmol/L and less than 25mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 50-100 Gs;
when the total hardness is more than or equal to 25mmol/L and less than 30mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 100-300 Gs;
when the total hardness is more than or equal to 30mmol/L and less than 40mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 300-400 Gs;
when the total hardness is more than or equal to 40mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 400-500 Gs;
total hardness as CaCO3Meter
Circulating water is pumped from the cooling water pool 11 by using a circulating pump 72, the circulating water flows through a circulating water outlet pipe 71, a heat exchanger 73 and a circulating water return pipe 74 in sequence, and the circulating pump 72 is arranged on the circulating water outlet pipe 71;
when circulating water flows through the heat exchanger 73, the heat exchanger 73 is cleaned by using an automatic cleaning device which is a rubber ball cleaning device 4 or a cleaning spiral band 8
When circulating water flows out of an exchanger outlet 732 of the heat exchanger 73, a bypass filtering pipeline 3 is used for guiding part of the circulating water flowing out of the exchanger outlet 732 into a cooling water pool 11, the bypass filtering pipeline 3 comprises a filtering pipe 32 and a filter 31, two ends of the filtering pipe 32 are respectively provided with a filtering water inlet and a filtering water return port, the filters 31 are both arranged on the filtering pipe 32, the filtering water return port is communicated with the cooling water pool 11, the filtering water inlet is communicated with the exchanger outlet 732, and the flow of the circulating water in the filtering pipe 32 is controlled to be 3-5% of the total flow of the circulating water through a bypass filtering valve
When circulating water flows through the circulating water return pipe 74, an alternating electromagnetic field is formed on the circulating water return pipe 74 by using the sub-audio frequency wave system 2, and the alternating electromagnetic field acts on the circulating water in the circulating water return pipe 74;
the circulating water is sent to the cooling tower 1 through the circulating water return pipe 74 to be cooled, and the cooled circulating water flows into the cooling water tank 11.
Sulfuric acid is added into the circulating water pool by using an acid adding device 5, so that the pH value of the circulating water is kept between 7.0 and 7.8, the acid adding device 5 comprises an acid storage tank 51 and an acid adding pipe 52, and the acid adding pipe 52 is connected with the acid storage tank 51 and the cooling water pool 11. The sterilization and algae inhibition system 6 is used for releasing nano copper ions in the cooling water pool 11 through an oxidation-reduction potential technology so as to kill bacteria and algae in the cooling water pool, specifically, a cathode material of the sterilization and algae inhibition processor is an electrolytic copper rod, and a cathode and an anode of the sterilization and algae inhibition processor are periodically changed, so that the cathode scaling can be prevented; on the other hand, nano-level copper ions can be electrolyzed when the copper bar is used as an anode, and after the nano-copper particles with positive charges contact bacterial cells with negative charges, the nano-copper particles can be mutually adsorbed, so that cell walls and cell membranes can be effectively punctured, and the microbial cell proteins are denatured, unable to breathe, metabolize and reproduce until death. When the device is used, the electrolytic current and the electrolytic time are controlled, and the concentration of the nano copper ions in the circulating water body is accurately controlled within 0.2-0.8 PPM.
In the invention:
the sub-audio frequency wave system 2 can generate alternating electromagnetic field and electromagnetism on the cooling water pool 11 and the circulating water return pipe 74Wave, alternating electromagnetic field capable of making Ca in circulating water2+、Mg2+And CO3 2-Be difficult to mutually collide and form the incrustation scale, in time formed the incrustation scale also be the aragonite of loose foamy, when the aragonite of loose foamy flowed into filter 31 along with filter tube 32, filter 31 can carry out effectual filtration to the precipitate in the circulating water, and handle alone, the algae system of inhibiting of disinfecting simultaneously can constantly take place to disinfect and press down algae information, release nanometer copper ion etc. prevent the growth of bacterium and alga, when the basicity in the circulating water was too high, can add sulphuric acid to cooling water pond 11 through acidification device 5, with the basicity of control circulating water. The invention adopts a physical treatment method, so that the sewage discharge of circulating water is greatly reduced, meanwhile, oxygen ions in the circulating water can obtain certain energy due to the alternating electromagnetic field and the electromagnetic waves, a layer of compact iron oxide (copper materials form compact cuprous oxide) can be formed on the inner side wall of steel, and the corrosion can be effectively prevented.
Example 2
A cooling circulating water system project of a certain company. The cooling circulating water system runs for 24 hours, and the circulating water quantity is 1000m3And h, applying the device to a circulating cooling water system, and performing the following field comparative test tests:
1. according to the method described in example 1, the intensity of the alternating magnetic field was adjusted according to the difference in the total hardness in the cold water circulating water, and the cooling time of the circulating water was measured after stable operation.
2. And (4) closing the sub-audio frequency wave system, only operating the cooling circulating water system, and testing and determining the cooling times of the circulating water when the system is stably operated.
The results of tests 1-2 are shown in the following table
It can be seen from the above table that, as can be seen from the comparison between test 1 and test 2, the use of the sub-audio frequency wave system can greatly improve the multiple of the cooling circulation water, and the water discharge is also reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.
Although the embodiments have been described, once the basic inventive concept is obtained, other variations and modifications of these embodiments can be made by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the contents of the present specification and drawings, or any other related technical fields, which are directly or indirectly applied thereto, are included in the scope of the present invention.
Claims (10)
1. A near-zero emission treatment method of circulating water is characterized by being applied to a near-zero emission treatment device of the circulating water, wherein the near-zero emission treatment device comprises a cooling tower, a circulating pipeline and a subaudio frequency wave system, the circulating pipeline comprises a circulating water outlet pipe, a circulating water return pipe and a heat exchanger, the heat exchanger is provided with an exchanger inlet and an exchanger outlet, the cooling tower is provided with a circulating water return port, a cooling water pool is provided with a circulating water outlet, two ends of the circulating water outlet pipe are connected with the circulating water outlet and the exchanger inlet, two ends of the circulating water return pipe are connected with the exchanger outlet and the circulating water,
the method comprises the following steps:
the method comprises the steps that an alternating electromagnetic field is generated in a cooling water pool by using a sub-audio frequency wave system, the alternating electromagnetic field acts on circulating water in the cooling water pool, the sub-audio frequency wave system comprises a sub-audio frequency generator and a plurality of energy boosters, the sub-audio frequency generator is electrically connected with the energy boosters, the energy boosters are divided into two parts which are respectively arranged in the cooling water pool and a circulating water return pipe, the sub-audio frequency generator controls the magnetic induction intensity of the alternating electromagnetic field to be 1-500Gs, and the frequency is 1Hz-100 kHz;
circulating water is pumped from the cooling water pool by using a circulating pump, the circulating water sequentially flows through a circulating water outlet pipe, a heat exchanger and a circulating water return pipe, and the circulating pump is arranged on the circulating water outlet pipe;
forming an alternating electromagnetic field on the circulating water return pipe by using a sub-audio frequency wave system, wherein the alternating electromagnetic field acts on circulating water in the circulating water return pipe;
and the circulating water is conveyed to the cooling tower through the circulating water return pipe to be cooled, and the cooled circulating water flows into the cooling water pool.
2. The near-zero emission treatment method of claim 1, wherein sulfuric acid is added to the circulating water tank using an acid adding device comprising an acid storage tank and an acid adding pipe connecting the acid storage tank and the cooling water tank so that the pH of the circulating water is maintained at 7.0 to 8.5.
3. The near zero emission treatment process of claim 1 wherein the heat exchanger is cleaned using an automatic cleaning device, the cleaning device being a glue ball cleaning device or a cleaning spiral tie.
4. The method of claim 3, wherein said glue ball cleaning device comprises a ball collecting net and a glue ball delivery pipe, a glue ball delivery pump, and a ball loading chamber connected in sequence, said exchanger inlet and outlet are connected with an inlet connection pipe and an outlet connection pipe, respectively, said circulation water outlet pipe and circulation water return pipe are connected with the heat exchanger through the inlet connection pipe and the outlet connection pipe, respectively, said ball collecting net is installed in the outlet connection pipe, said glue ball delivery pump is connected with the inlet connection pipe, said ball loading chamber is connected with the inlet connection pipe, and said ball loading chamber is provided with glue balls.
5. The near-zero emission treatment process of claim 4, wherein the cleaning device is a cleaning spiral band, the heat exchanger is a tube heat exchanger having a plurality of cooling tubes therein, the cleaning spiral band is disposed within the cooling tubes, and both ends of the cleaning spiral band are rotatably connected to the cooling tubes.
6. The near-zero emission treatment process of claim 1, wherein the relationship between the magnetic induction of the alternating electromagnetic field and the total hardness in the circulating water is controlled using a sub-tone generator:
when the total hardness is less than 20mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 1-50 Gs;
when the total hardness is more than or equal to 20mmol/L and less than 25mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 50-100 Gs;
when the total hardness is more than or equal to 25mmol/L and less than 30mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 100-300 Gs;
when the total hardness is more than or equal to 30mmol/L and less than 40mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 300-400 Gs;
when the total hardness is more than or equal to 40mmol/L, the magnetic induction intensity of the alternating electromagnetic field is set to be 400-500 Gs;
the total hardness is as CaCO3And (6) counting.
7. The near-zero emission treatment process of claim 1, wherein the volume of circulating water subjected to the alternating electromagnetic field in the cooling bath is controlled using a subaudio generator to draw from 1/8 to 1/2 of the circulating water volume per hour by the circulating pump.
8. The near-zero emission treatment method of claim 1, wherein the part of the circulating water flowing out of the outlet of the exchanger is introduced into the cooling water reservoir by using a bypass line, the bypass line includes a filter pipe and a filter, the filter pipe has a filter water inlet and a filter water return at both ends thereof, the filter is mounted on the filter pipe, the filter water return is communicated with the cooling water reservoir, and the filter water inlet is communicated with the outlet of the exchanger.
9. The near-zero emission treatment process of claim 8, wherein the flow rate of the circulating water in the filter pipe is controlled by a bypass valve to be 3-5% of the total flow rate of the circulating water.
10. The near-zero emission treatment process of claim 1 wherein a bactericidal algae-inhibiting system is used to release nano-copper ions in the cooling water bath to kill bacteria and algae in the cooling water bath.
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