CN111924902A - System and method for continuously monitoring concentration of medicament in seawater water treatment system - Google Patents

System and method for continuously monitoring concentration of medicament in seawater water treatment system Download PDF

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Publication number
CN111924902A
CN111924902A CN202010664557.0A CN202010664557A CN111924902A CN 111924902 A CN111924902 A CN 111924902A CN 202010664557 A CN202010664557 A CN 202010664557A CN 111924902 A CN111924902 A CN 111924902A
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plc
probe
continuous sampling
sampling tank
medicament
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Inventor
沈忱
徐旭
侯相钰
胡明明
焦春联
尹建华
王维珍
胡楠
李雪
李治洁
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Tianjin Zhonghai Treatment Technology Co ltd
Tianjin Institute of Seawater Desalination and Multipurpose Utilization MNR
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Tianjin Zhonghai Treatment Technology Co ltd
Tianjin Institute of Seawater Desalination and Multipurpose Utilization MNR
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Priority to CN202010664557.0A priority Critical patent/CN111924902A/en
Publication of CN111924902A publication Critical patent/CN111924902A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • 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
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • 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
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/04—Oxidation reduction potential [ORP]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/05—Conductivity or salinity
    • 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
    • C02F2303/08—Corrosion inhibition
    • 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
    • C02F2303/14—Maintenance of water treatment installations
    • 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
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • G01N2021/6439—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" with indicators, stains, dyes, tags, labels, marks

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  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention discloses a system and a method for continuously monitoring the concentration of a medicament in a seawater water treatment system, wherein the system comprises a continuous sampling tank, a screw rod with a hairbrush arranged in the middle is arranged on the continuous sampling tank, the bottom of the continuous sampling tank is sequentially connected with a detection window and a fluorescence detector, a first probe and a second probe are respectively arranged in an analysis chamber, and the first probe is sequentially connected with a conductivity meter and a PLC (programmable logic controller); the second probe is sequentially connected with an oxidation-reduction potentiometer and a PLC (programmable logic controller), and the PLC is respectively connected with the fluorescence detector, the metering pump, the motor and the electromagnetic valve. The system has high automation degree, realizes long-time uninterrupted monitoring through the continuous sampling tank and the self-cleaning system, and saves the maintenance and material consumption cost of monitoring equipment. And various monitoring devices are comprehensively adopted, so that the accuracy of monitoring the seawater system is improved. The control is carried out by using a preset special program, the dosage is automatically adjusted according to the acquired data information, the error caused by manual operation is avoided, and the labor cost is saved.

Description

System and method for continuously monitoring concentration of medicament in seawater water treatment system
Technical Field
The invention relates to the technical field of seawater treatment, in particular to a system and a method for continuously monitoring the concentration of a medicament in a seawater treatment system.
Background
China is a country with serious water shortage, along with the economic development and the enlargement of industrial scale, the annual industrial water consumption is over billions, and the proportion of the industrial water to the total water consumption is over 20 percent. The seawater is used as industrial water instead of fresh water, so that a large amount of fresh water resources can be saved, and the economic benefit and the social benefit are remarkable. The intelligent addition of the water treatment agent is an optimal mode for saving the seawater treatment cost and ensuring the water use safety of equipment. The intelligent adding of the water treatment agent means that the water treatment agent such as the scale and corrosion inhibitor, the biocide and the like is automatically added through an automatic system and the concentration of the water treatment agent is ensured to be maintained in a proper range. Compared with the traditional manual dosing control mode, the intelligent dosing changes the adding amount of the medicament in time through the real concentration of the water treatment agent in the real-time monitoring system, the concentration fluctuation of the medicament is small, and meanwhile, the system operation risk caused by inaccurate manual dosing or wrong dosing is avoided. In order to realize intelligent dosing of water treatment agents, advanced agent concentration monitoring equipment and method are crucial. For example, patent CN105988378A describes a recirculating cooling water control system and a dosing control device and method, the dosing control device comprising: the monitoring unit, the control unit and the dosing unit; by monitoring the operating parameters of the circulating cooling water system, the dosing amount of the medicament is calculated when the effect generated by the medicament cannot meet the requirement, and the dosing unit is controlled to implement dosing according to the calculated dosing amount. The method has the advantages that the dosage of the medicament is calculated according to the effect actually generated by the medicament, so that the treatment effect is more optimized.
Patent CN109095526A describes an automatic monitoring and dosing sewage treatment system and a monitoring method of drug content, the system is provided with an automatic sampler, after sampling, the sampler is carried to a fluorescence monitoring device by a grabbing arm, fluorescence intensity analysis is carried out, drug concentration is judged by fluorescence intensity, and waste liquid in a sampling bottle is finally discharged to a waste liquid bottle. The method has the advantages that whether the medicament needs to be added or not is judged through double results of water quality analysis and fluorescence monitoring, and the accuracy of medicament addition is improved.
However, since the salt content of the seawater is high, and the water quality is complex and variable relative to the fresh water, if a single monitoring technology is adopted, the monitoring result is easily interfered; most of the existing medicament concentration monitoring devices judge whether water treatment medicaments need to be added or not by sampling and analyzing water quality information or fluorescence intensity at regular time. Particularly, the control precision of the medicament concentration and the data acquisition frequency are closely related, and if the sampling frequency is greatly increased, the cost of medicament consumables is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a system for continuously monitoring the concentration of a medicament in a seawater water treatment system.
The second purpose of the invention is to provide a method for continuously monitoring the concentration of the medicament in the seawater water treatment system.
The technical scheme of the invention is summarized as follows:
the system for continuously monitoring the concentration of the medicament in the seawater treatment system comprises a continuous sampling tank 3, wherein the upper part of the continuous sampling tank is connected with a circulating water pipeline 9 through a sampling bypass 15, the lower part of the continuous sampling tank is connected with an analysis chamber 14 and an electromagnetic valve 10 in sequence through a connecting pipe 21 and then connected with a waste water tank 11, a screw rod 19 is arranged on the continuous sampling tank, a brush 20 is arranged in the middle of the screw rod, one end of the screw rod 19 is connected with a motor 18, the bottom of the continuous sampling tank is connected with a detection window 2 and a fluorescence detector 1 in sequence, the outlet of a metering pump 7 is connected with the circulating water pipeline 9 through a medicament adding bypass 17, and the inlet of the metering pump 7 is connected with a medicament; a first probe 4 and a second probe 16 are respectively arranged in the analysis chamber 14, and the first probe 4 is sequentially connected with the conductivity meter 5 and the PLC 13 through leads; the second probe 16 is connected with the oxidation-reduction potentiometer 6 and the PLC 13 in sequence through leads, the PLC 13 is respectively connected with the fluorescence detector 1, the metering pump 7, the motor 18 and the electromagnetic valve 10 through leads, and the computer 12 is connected with the PLC 13 through leads.
The method for continuously monitoring the concentration of the medicament in the seawater water treatment system comprises the following steps:
(1) using the continuous monitoring system for the concentration of the medicament in the seawater treatment system;
(2) adding a reagent solution containing a fluorescent tracer into a dosing tank 8, starting a metering pump 7, inputting the reagent solution containing the fluorescent tracer into a circulating water pipeline 9 through a dosing bypass 17, enabling liquid in the circulating water pipeline 9 to enter a continuous sampling tank 3 through a sampling bypass 15, enabling the liquid to enter a waste liquid tank 11 through a connecting pipeline 21, an analysis chamber 14 and an electromagnetic valve 10, adjusting the wavelength of a fluorescent detector 1 according to the difference of the fluorescent tracer, enabling the fluorescent detector 1 to carry out fluorescent detection on the liquid in the continuous sampling tank 3 through a detection window 2, inputting a detection data signal into a PLC 13 through a lead, enabling a conductivity meter 5 to carry out conductivity detection on the liquid in the analysis chamber 14 through a first probe 4, inputting the data signal into the PLC 13 through the lead for storage, and enabling an oxidation-reduction potential meter 6 to carry out oxidation-reduction potential detection on the liquid in the analysis chamber 14 through a second probe 16, inputting the data signal into the PLC 13 through a lead for storage; the PLC controls the electromagnetic valve 10, the PLC controls the flow of the metering pump 7, the PLC 13 transmits a data signal to the computer 12 for storage, the computer 12 transmits a control signal to the PLC by setting a self-cleaning program, the PLC controls the rotating speed of the motor 18, and the motor 18 drives the brush 20 to rotate through the screw rod 19.
The medicament solution containing the fluorescent tracer is prepared from the following components in percentage by weight: 150-200: 800-850: 3000 proportion is composed of fluorescent tracer, scale and corrosion inhibitor, biocide and water.
The fluorescent tracer is at least one of tetraphenylethylene, pyrene tetrasulfonic acid sodium salt and naphthalene disulfonic acid.
The scale and corrosion inhibitor is at least one of hydroxyethylidene diphosphonic acid, aminotrimethylene phosphonic acid and 2-phosphate-1, 2, 4-tricarboxylic acid butane.
The biocide is dodecyl dimethyl benzyl ammonium chloride.
The invention has the advantages that:
the invention realizes the comprehensive monitoring of the seawater water treatment system by integrating the conductivity meter, the oxidation-reduction potentiometer and the fluorescence intensity detection equipment in the monitoring system; whether a medicament needs to be added into the system is judged by comprehensively analyzing the conductivity, the oxidation-reduction potential and the fluorescence intensity data, the defect that the existing single monitoring technology is easily interfered by the complex water quality of the seawater is overcome, and the monitoring accuracy is improved.
The invention forms continuous system operation data and predicts the system operation trend by continuously carrying out sample introduction, nondestructive detection and sample discharge of system water in a closed bypass, thereby judging whether to add a medicament into the system, overcoming the defects of sampling lag and small data quantity caused by judging whether to add the medicament by intermittently and frequently collecting the water quality or fluorescence intensity parameters of the discharged water in the prior art, and improving the control precision.
The system has high automation degree, can realize long-time uninterrupted monitoring through the continuous sampling tank and the self-cleaning system consisting of the motor, the screw and the brush, and saves the maintenance and material consumption cost of monitoring equipment. The control is carried out by using a preset special program, the dosage is automatically adjusted according to the acquired data information, the error caused by manual operation is avoided, and the labor cost is saved.
The method of the invention mixes the tracer and the water treatment agent for use, adds the mixture into the seawater water treatment system, and adjusts the adding dosage of the water treatment agent by monitoring the concentration change trend of the fluorescent tracer, the conductivity and the oxidation-reduction potential data, thereby ensuring that the concentration of the agent is within the effective action range. The monitoring method has the advantages of high speed and high sensitivity.
Drawings
FIG. 1 is a schematic structural diagram of a system for continuously monitoring the concentration of a pharmaceutical agent in a seawater treatment system according to the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
A continuous monitoring system for the concentration of a medicament in a seawater treatment system is shown in figure 1 and comprises a continuous sampling tank 3, wherein the upper part of the continuous sampling tank is connected with a circulating water pipeline 9 through a sampling bypass 15, the lower part of the continuous sampling tank is connected with an analysis chamber 14 and an electromagnetic valve 10 in sequence through a connecting pipe 21 and then connected with a waste water tank 11, a screw rod 19 is arranged on the continuous sampling tank, a brush 20 is arranged in the middle of the screw rod, one end of the screw rod 19 is connected with a motor 18, the bottom of the continuous sampling tank is connected with a detection window 2 and a fluorescent detector 1 in sequence, the outlet of a metering pump 7 is connected with the circulating water pipeline 9 through a medicament adding bypass 17, and the inlet of the metering pump 7 is connected; a first probe 4 and a second probe 16 are respectively arranged in the analysis chamber 14, and the first probe 4 is sequentially connected with the conductivity meter 5 and the PLC 13 through leads; the second probe 16 is connected with the oxidation-reduction potentiometer 6 and the PLC 13 in sequence through leads, the PLC 13 is respectively connected with the fluorescence detector 1, the metering pump 7, the motor 18 and the electromagnetic valve 10 through leads, and the computer 12 is connected with the PLC 13 through leads.
Example 1
The method for continuously monitoring the concentration of the medicament in the seawater water treatment system comprises the following steps:
(1) using the continuous monitoring system for the concentration of the medicament in the seawater treatment system;
(2) adding a reagent solution containing a fluorescent tracer into a reagent adding tank 8, starting a metering pump 7, inputting the reagent solution containing the fluorescent tracer into a circulating water pipeline 9 through a reagent adding bypass 17, enabling liquid in the circulating water pipeline 9 to enter a continuous sampling tank 3 through a sampling bypass 15, enabling the liquid to enter a waste liquid tank 11 through a connecting pipeline 21, an analysis chamber 14 and an electromagnetic valve 10, adjusting the wavelength of a fluorescent detector 1, enabling the fluorescent detector 1 to perform fluorescent detection on the liquid in the continuous sampling tank 3 through a detection window 2, and the detected data signal is input into the PLC 13 through a lead, the conductivity meter 5 detects the conductivity of the liquid in the analysis chamber 14 through the first probe 4, inputting the data signal into the PLC 13 through a lead for storage, carrying out oxidation-reduction potential detection on the liquid in the analysis chamber 14 by the oxidation-reduction potential meter 6 through the second probe 16, and inputting the data signal into the PLC 13 through the lead for storage; the PLC controls the electromagnetic valve 10, the PLC controls the flow of the metering pump 7, the PLC 13 transmits a data signal to the computer 12 for storage, the computer 12 transmits a control signal to the PLC by setting a self-cleaning program, the PLC controls the rotating speed of the motor 18, and the motor 18 drives the brush 20 to rotate through the screw rod 19.
The medicament solution containing the fluorescent tracer is prepared from the following components in percentage by weight: 180: 830: 3000 proportion is made up of tetraphenyl ethylene (fluorescent tracer, excitation wavelength 362nm, emission wavelength 458nm), hydroxy ethylidene diphosphonic acid (scale and corrosion inhibitor), dodecyl dimethyl benzyl ammonium chloride (biocide) and water.
The weight ratio of the raw materials is 1: 150: 850: 3000 pyrene tetrasulfonic acid sodium salt (fluorescent tracer, excitation wavelength 375nm, emission wavelength 404nm), aminotrimethylene phosphonic acid (scale and corrosion inhibitor), dodecyl dimethyl benzyl ammonium chloride (biocide) and water; or a reagent solution containing the fluorescent tracer, which is composed of naphthalene disulfonic acid (fluorescent tracer, excitation wavelength of 365nm and emission wavelength of 404nm), aminotrimethylene phosphonic acid (scale and corrosion inhibitor), 2-phosphate-1, 2, 4-butane tricarboxylate (scale and corrosion inhibitor), dodecyl dimethyl benzyl ammonium chloride (biocide) and water in a weight ratio of 1:100:100:800:3000, replaces the reagent solution containing the fluorescent tracer in the embodiment, and the concentration of the reagent in the seawater water treatment system is continuously monitored in the same way as in the embodiment.
The self-cleaning system composed of the motor, the screw and the brush can clean the inner wall of the continuous sampling tank 3 and the detection window in a timing and non-stop way.
The other end of the dosing bypass of the circulating water pipeline is sequentially connected with the metering pump and the dosing tank, and the dosing amount can be controlled by adjusting the flow of the metering pump.
The PLC is connected with the metering pump through a wire, and the dosing is controlled by controlling the flow of the metering pump.
The PLC is provided with a digital display screen, and the PLC can entrust related enterprises to customize according to system requirements.

Claims (6)

1. The system for continuously monitoring the concentration of the medicament in the seawater treatment system comprises a continuous sampling tank (3), wherein the upper part of the continuous sampling tank is connected with a circulating water pipeline (9) through a sampling bypass (15), and is characterized in that the lower part of the continuous sampling tank is sequentially connected with an analysis chamber (14) and an electromagnetic valve (10) through a connecting pipe (21) and then connected with a waste liquid tank (11), a screw rod (19) is arranged on the continuous sampling tank, a brush (20) is arranged in the middle of the screw rod, one end of the screw rod (19) is connected with a motor (18), the bottom of the continuous sampling tank is sequentially connected with a detection window (2) and a fluorescence detector (1), the outlet of a metering pump (7) is connected with the circulating water pipeline (9) through a medicament feeding bypass (17), and the inlet of the metering pump (7) is connected with a; a first probe (4) and a second probe (16) are respectively arranged in the analysis chamber (14), and the first probe (4) is sequentially connected with a conductivity meter (5) and a PLC (13) through a lead; the second probe (16) is sequentially connected with the oxidation-reduction potentiometer (6) and the PLC (13) through leads, the PLC (13) is respectively connected with the fluorescence detector (1), the metering pump (7), the motor (18) and the electromagnetic valve (10) through leads, and the computer (12) is connected with the PLC (13) through leads.
2. The method for continuously monitoring the concentration of the medicament in the seawater water treatment system is characterized by comprising the following steps of:
(1) using the continuous agent concentration monitoring system in the seawater water treatment system of claim 1;
(2) adding a reagent solution containing a fluorescent tracer into a reagent adding tank (8), starting a metering pump (7), inputting the reagent solution containing the fluorescent tracer into a circulating water pipeline (9) through a reagent adding bypass (17), enabling liquid in the circulating water pipeline (9) to enter a continuous sampling tank (3) through a sampling bypass (15), enabling the liquid to enter a waste liquid tank (11) through a connecting pipeline (21), an analysis chamber (14) and an electromagnetic valve (10), adjusting the wavelength of a fluorescent detector (1), enabling the fluorescent detector (1) to perform fluorescent detection on the liquid in the continuous sampling tank (3) through a detection window (2), inputting a detection data signal into a PLC (13) through a lead, enabling a conductivity meter (5) to perform conductivity detection on the liquid in the analysis chamber (14) through a first probe (4), and inputting the data signal into the PLC (13) through the lead for storage, the oxidation-reduction potentiometer (6) carries out oxidation-reduction potential detection on the liquid in the analysis chamber (14) through a second probe (16), and inputs a data signal into the PLC (13) through a lead for storage; PLC control solenoid valve (10), the flow of PLC control measuring pump (7), PLC (13) send data signal to computer (12) and store, through setting for the self-cleaning procedure, computer (12) send control signal to PLC, the rotational speed of PLC control motor (18), motor (18) pass through screw rod (19) and drive brush (20) and rotate.
3. The method according to claim 2, characterized in that the pharmacological solution containing a fluorescent tracer is a solution of the fluorescent tracer in a weight ratio of 1: 150-200: 800-850: 3000 proportion is composed of fluorescent tracer, scale and corrosion inhibitor, biocide and water.
4. The method as set forth in claim 3, wherein the fluorescent tracer is at least one of tetraphenylethylene, pyrenetetrasulfonic acid sodium salt and naphthalenedisulfonic acid.
5. The method as set forth in claim 3, wherein the scale and corrosion inhibitor is at least one of hydroxyethylidene diphosphonic acid, aminotrimethylene phosphonic acid and 2-phosphoric acid-1, 2, 4-tricarboxylic acid butane.
6. The method as set forth in claim 3, wherein said biocide is dodecyl dimethyl benzyl ammonium chloride.
CN202010664557.0A 2020-07-10 2020-07-10 System and method for continuously monitoring concentration of medicament in seawater water treatment system Pending CN111924902A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201156033Y (en) * 2007-12-25 2008-11-26 九江中科环保发展有限公司 Explosion-proof oil concentration in water on-line monitoring instrument
CN207485652U (en) * 2017-11-22 2018-06-12 扬州科力环保设备有限公司 Industrial circulating water drug concentration detector
CN109095526A (en) * 2018-09-30 2018-12-28 毅康科技有限公司 A kind of monitoring method of automatic monitoring dosing sewage disposal system and chemical content

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201156033Y (en) * 2007-12-25 2008-11-26 九江中科环保发展有限公司 Explosion-proof oil concentration in water on-line monitoring instrument
CN207485652U (en) * 2017-11-22 2018-06-12 扬州科力环保设备有限公司 Industrial circulating water drug concentration detector
CN109095526A (en) * 2018-09-30 2018-12-28 毅康科技有限公司 A kind of monitoring method of automatic monitoring dosing sewage disposal system and chemical content

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