CN114590937A - Treatment method of industrial circulating water - Google Patents

Treatment method of industrial circulating water Download PDF

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Publication number
CN114590937A
CN114590937A CN202210351690.XA CN202210351690A CN114590937A CN 114590937 A CN114590937 A CN 114590937A CN 202210351690 A CN202210351690 A CN 202210351690A CN 114590937 A CN114590937 A CN 114590937A
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China
Prior art keywords
water
circulating water
cooling
industrial circulating
detection module
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Pending
Application number
CN202210351690.XA
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Chinese (zh)
Inventor
张晓阳
荣健
张孝悦
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Qingdao Emote Environmental Protection Technology Co ltd
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Qingdao Emote Environmental Protection Technology Co ltd
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Priority to CN202210351690.XA priority Critical patent/CN114590937A/en
Publication of CN114590937A publication Critical patent/CN114590937A/en
Pending legal-status Critical Current

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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023—Water in cooling circuits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/20—Prevention of biofouling
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention relates to a method for treating industrial circulating water, which comprises the following steps: the method comprises the following steps: filtering solid impurities and suspended matters in the industrial circulating water by a filtering device; step two: adsorbing the filtered industrial circulating water by an adsorption device to remove organic matters; step three: industrial circulating water enters a cooling device for cooling, and water is supplemented in the cooling device; step four: the water enters a crystallization desalting device, and anions and cations in the water are separated out in a crystallized salt form; step five: and (5) entering a sterilizing device, sterilizing and removing algae to obtain purified water. The invention solves the problems that in the prior art, chemical agents are required to be added to achieve the effects of scale prevention, corrosion prevention, sterilization and algae removal, realizes the cyclic utilization of industrial circulating water, realizes zero pollution discharge, does not need manual management, and automatically controls the operation of equipment through a control module.

Description

Treatment method of industrial circulating water
The application is a divisional application of a patent application named 'a treatment method of industrial circulating water', the application date of the original application is 10, 14 and 2020, and the application number is 202011098034.0.
Technical Field
The invention relates to the field of water treatment equipment, in particular to a method for treating industrial circulating water.
Background
The increasing shortage and pollution of fresh water resources have affected social development and normal human life, and along with the increase of environmental protection, the control of water resources is more and more strict, and water conservation and environmental protection discharge are more and more urgent. The circulating cooling water medicament generally adopts a phosphorus formula, so that water resources are rich in phosphorus and eutrophication after long-term use, the concentration of various harmful ions is increased, and although the content of discharged pollutants generally meets the discharge standard, the total pollutant discharge amount is huge, so that the water resources and the environment are polluted.
At present, the traditional treatment mode of adding chemical agents is generally adopted for scale prevention, corrosion prevention, sterilization and algae removal of circulating water, and a large amount of pollution discharge is needed for cooling the circulating water to maintain the balance of the total salt amount in the circulating water and meet the requirements of scale prevention and corrosion prevention; the added medicaments are all macromolecular organic medicaments containing phosphorus, are discharged along with sewage discharge, pollute water resources and easily cause eutrophication of the water resources.
The research and development of a high-tech circulating water treatment technology and method with reliable performance, economic operation, environment-friendly and energy-saving technology around three subjects of performance, economy and environment protection are inevitable trends and development directions.
Disclosure of Invention
The invention mainly provides a method for treating industrial circulating water, which aims to solve the technical problems and comprises the following steps:
the method comprises the following steps: filtering solid impurities and suspended matters in the industrial circulating water by a filtering device; the filtering device for filtering solid impurities and suspended matters is a coarse filtering filter; the rough filtering filter consists of a filter frame and a stainless steel wire mesh;
step two: adsorbing the filtered industrial circulating water by an adsorption device to remove organic matters; the adsorption device for removing the organic matters is a packed tower or a filter bed containing activated carbon; the active carbon can remove substances and organic matters which generate odor in water, such as phenol, benzene, chlorine, pesticides, detergents, trihalomethane and the like, has adsorption capacity on ions such as silver, cadmium, chromate, cyanogen, antimony, arsenic, bismuth, tin, mercury, lead, nickel and the like, and granular active carbon is filled into a packed tower or a filter bed, so that industrial circulating water is treated by the packed tower or the filter bed;
step three: industry circulating water gets into cooling device cooling, carries out the moisturizing in cooling device simultaneously, specifically includes:
the cooling device is a cooling tower, the cooling tower is connected with a water replenishing pipeline to replenish consumed and evaporated water, the cooling tower is provided with a first detection module, and the first detection module is electrically connected with a control module to realize automatic detection, control and automatic water replenishing of cooling temperature;
when the first detection module detects that the temperature of water in the cooling tower is reduced to a preset maximum temperature, the control module controls the water to continuously flow, and when the first detection module detects that the water quantity in the circulating pipeline and the cooling tower is reduced to a preset minimum water quantity due to consumption and evaporation, the control module controls automatic water supplement;
step four: the water enters a crystallization desalting device, and anions and cations in the water are separated out in a crystallized salt form;
step five: entering a sterilizing device for sterilizing and algae removal to obtain purified water, and specifically comprising the following steps: the sterilizing device adopts a polarized water treatment device, a second detection module is arranged in the polarized water treatment device, and the second detection module is electrically connected with the control module, so that the sterilization and algae removal automatic detection and control of the sterilizing device are realized;
the water generated by the polarized water treatment device can be directly used for supplementing circulating water, when the second detection module detects that the water quality of the water after polarized water treatment meets the requirement, purified water is obtained, and the control module controls the purified water to flow into the circulating water channel; the structure of the water molecule is changed when passing through the polarization field, the polarity is strengthened, and the affinity of the negative and positive ions in the circulating water and the positive and negative terminals of the polar water molecule is strengthened. When the affinity exceeds the ionic thermal movement force, the anions and the cations are firmly surroundedThe water molecules can not move freely at the positive and negative ends of the polar water molecules, so that the combination of anions and cations in water into scale can be prevented; while producing a large number of "free" electrons which are dissolved by the O dissolved in the circulating water2Absorption to form OH-O2-、H2O2And the like. The bacteria and algae have no growth environment, and the anions are surrounded by water molecules, so that the corrosion of the anions is eliminated, the bacteria and algae can not grow, biological slime is not generated, and the corrosion of microorganisms is avoided. The polarized water treatment technology does not need to add any chemical agent, realizes zero discharge of circulating water, protects the ecological environment and saves the water resource consumption. The polarized water treatment technology can make the circulating water run at a high concentration multiple rate, and the scale prevention rate, the sterilization and algae removal rate and the corrosion inhibition rate of the water after polarized water treatment all meet the requirements of the new national standard GB50050-2007 standard.
Optionally, in the fourth step, the crystallization desalting device adopts a continuous electric desalting device, a third detection module is arranged in the continuous electric desalting device, and the third detection module is electrically connected with the control module, so that automatic water quality detection and control of the crystallization desalting device are realized. In the cooling process of the cooling circulating water, water is continuously evaporated in a cooling tower, anions and cations in the circulating water are continuously increased, the scaling and corrosion tendency is increased, in the prior art, the circulating water needs to continuously discharge water with higher anion and cation concentrations through pollution discharge, fresh water is supplemented for dilution, the balance of the anions and the cations of the circulating water is maintained in a certain range, and a certain amount of chemical agents are added to prevent the scaling and corrosion of a system. The continuous electric demineralizing device realizes the directional migration of ions in water under the action of an electric field through the selective permeation action and the ion exchange action of anions and cations, so that the anions and the cations in the strong brine are separated out in a crystallized salt form, the deep purification and demineralizing of the water are realized, and when the detection system detects that the water quality of the water after being treated by the continuous electric demineralizing device meets the requirements, the control system controls the continuous circulation of the water.
In conclusion, the beneficial effects of the invention are as follows: the invention solves the problems that in the prior art, chemical agents are required to be added to achieve the effects of scale prevention, corrosion prevention, sterilization and algae removal, realizes the cyclic utilization of industrial circulating water, realizes zero pollution discharge, does not need manual management, and automatically controls the operation of equipment through a control module.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic diagram of a method for treating industrial circulating water according to the present invention.
Detailed Description
Referring to the attached drawings, the invention provides a method for treating industrial circulating water, which is used for solving the technical problem and is characterized by comprising the following steps: the method comprises the following steps: filtering solid impurities and suspended matters in the industrial circulating water by a filtering device;
step two: adsorbing the filtered industrial circulating water by an adsorption device to remove organic matters; step three: industrial circulating water enters a cooling device for cooling, and water is supplemented in the cooling device; step four: the water enters a crystallization desalting device, and anions and cations in the water are separated out in a crystal salt form; step five: and (5) entering a sterilizing device, sterilizing and removing algae to obtain purified water.
In a preferred embodiment of the method for treating industrial circulating water according to the present invention, the filtering device for filtering solid impurities and suspended substances is a coarse filter, and the coarse filter is composed of a filter frame and a stainless steel wire mesh.
In a preferred embodiment of the method for treating industrial circulating water according to the present invention, the adsorption device for removing organic substances is an adsorption device containing activated carbon, the activated carbon can remove substances and organic substances which generate odor in water, such as phenol, benzene, chlorine, pesticides, detergents, trihalomethanes, etc., and has adsorption capacity for ions such as silver, cadmium, chromate, cyanogen, antimony, arsenic, bismuth, tin, mercury, lead, nickel, etc., and the granular activated carbon is loaded into a packed tower or a filter bed, and the industrial circulating water is treated by passing through the packed tower or the filter bed.
In a preferred embodiment of the method for treating industrial circulating water provided by the invention, the cooling device is a cooling tower, the cooling tower is connected with a water replenishing pipeline to replenish consumed and evaporated water, the cooling tower is provided with a detection module, and the detection module is electrically connected with the control module to realize automatic detection, control and automatic water replenishment of the cooling temperature. When the detection system detects that the water temperature in the cooling tower is reduced to a preset maximum temperature, the control system controls the water to continuously flow, and when the detection system detects that the water quantity in the circulating pipeline and the cooling tower is reduced to a preset minimum water quantity due to consumption and evaporation, the control system controls automatic water replenishing.
In a preferred embodiment of the method for treating industrial circulating water provided by the invention, the continuous electric desalting device is adopted as the crystallization desalting device, a detection module is arranged in the continuous electric desalting device, and the detection module is electrically connected with the control module, so that automatic water quality detection and control of the crystallization desalting device are realized. In the cooling process of the cooling circulating water, water is continuously evaporated in a cooling tower, anions and cations in the circulating water are continuously increased, the scaling and corrosion tendency is increased, in the prior art, the circulating water needs to continuously discharge water with higher anion and cation concentrations through pollution discharge, fresh water is supplemented for dilution, the balance of the anions and the cations of the circulating water is maintained in a certain range, and a certain amount of chemical agents are added to prevent the scaling and corrosion of a system. The continuous electric desalting device realizes the directional migration of ions in water under the action of an electric field through the selective permeation action and the ion exchange action of anions and cations, so that the anions and the cations in the strong brine are separated out in a crystallized salt form, the deep purification and desalting of the water are realized, and when the detection system detects that the water quality of the water treated by the continuous electric desalting device meets the requirement, the control system controls the continuous circulation of the water.
In a preferred embodiment of the method for treating industrial circulating water provided by the invention, the sterilizing device adopts a polarized water treatment device, a detection module is arranged in the polarized water treatment device, and the detection module is electrically connected with the control module, so that the sterilization and algae removal automatic detection and control of the sterilizing device are realized. The structure of the water molecule is changed when passing through the polarization field, the polarity is strengthened, and the affinity of the negative and positive ions in the circulating water and the positive and negative terminals of the polar water molecule is strengthened. When the affinity exceeds the ionic thermal movement force, the negative ions and the positive ions are firmly enclosed at the positive and negative ends of the polar water molecules,can not move freely, and prevent the anions and cations in the water from combining into scale; while producing a large number of "free" electrons which are dissolved by the O dissolved in the circulating water2Absorption to form OH-O2-、H2O2And the like. The bacteria and algae have no growth environment, and the anions are surrounded by water molecules, so that the corrosion of the anions is eliminated, the bacteria and algae can not grow, biological slime is not generated, and the corrosion of microorganisms is avoided. The polarized water treatment technology does not need to add any chemical agent, realizes zero discharge of circulating water, protects the ecological environment and saves the water resource consumption. The polarized water treatment technology can enable circulating water to run at a high concentration multiple, the scale prevention rate, the sterilization and algae removal rate and the corrosion inhibition rate of the water after polarized water treatment all meet the requirements of a new national standard GB50050-2007 standard, water generated by polarized water treatment can be directly used for supplementing the circulating water, when the detection system detects that the water quality of the water after polarized water treatment meets the requirements, purified water is obtained, and the control system controls the purified water to flow into a circulating water channel.
In summary, the present invention is not limited to the above-described embodiments. Numerous changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The protection scope of the present invention shall be subject to the claims of the present invention.

Claims (2)

1. A method for treating industrial circulating water is characterized by comprising the following steps:
the method comprises the following steps: filtering solid impurities and suspended matters in the industrial circulating water by a filtering device; the filtering device for filtering solid impurities and suspended matters is a coarse filtering filter; the rough filtering filter consists of a filter frame and a stainless steel wire mesh;
step two: adsorbing the filtered industrial circulating water by an adsorption device to remove organic matters; the adsorption device for removing the organic matters is a packed tower or a filter bed containing activated carbon;
step three: industry circulating water gets into cooling device cooling, carries out the moisturizing in cooling device simultaneously, specifically includes:
the cooling device is a cooling tower, the cooling tower is connected with a water replenishing pipeline to replenish consumed and evaporated water, the cooling tower is provided with a first detection module, and the first detection module is electrically connected with a control module to realize automatic detection, control and automatic water replenishing of cooling temperature;
when the first detection module detects that the temperature of water in the cooling tower is reduced to a preset maximum temperature, the control module controls the water to continuously circulate, and when the first detection module detects that the water in the circulating pipeline and the cooling tower is reduced to a preset minimum water amount due to consumption and evaporation, the control module controls automatic water replenishing;
step four: the water enters a crystallization desalting device, and anions and cations in the water are separated out in a crystallized salt form;
step five: entering a sterilizing device for sterilizing and algae removal to obtain purified water, which specifically comprises the following steps: the sterilizing device adopts a polarized water treatment device, a second detection module is arranged in the polarized water treatment device, and the second detection module is electrically connected with the control module, so that the sterilization and algae removal automatic detection and control of the sterilizing device are realized;
the water produced by the polarized water treatment device can be directly used for supplementing water to the circulating water, when the second detection module detects that the water quality of the water after polarized water treatment meets the requirement, purified water is obtained, and the control module controls the purified water to flow into the circulating water channel.
2. The method for treating industrial circulating water according to claim 1, wherein in the fourth step, the continuous electric desalting device is adopted as the crystallization desalting device, a third detection module is arranged in the continuous electric desalting device, and the third detection module is electrically connected with the control module, so that automatic water quality detection and control of the crystallization desalting device are realized.
CN202210351690.XA 2020-10-14 2020-10-14 Treatment method of industrial circulating water Pending CN114590937A (en)

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CN113003630B (en) * 2021-03-30 2023-05-12 嘉兴诚毅环保科技有限责任公司 Quick sedimentation device of industrial circulating water

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