CN113406284A - Online testing device and method for biological biocide - Google Patents

Online testing device and method for biological biocide Download PDF

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Publication number
CN113406284A
CN113406284A CN202110706595.2A CN202110706595A CN113406284A CN 113406284 A CN113406284 A CN 113406284A CN 202110706595 A CN202110706595 A CN 202110706595A CN 113406284 A CN113406284 A CN 113406284A
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test
water
unit
pump
storage tank
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CN202110706595.2A
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Inventor
孙云
颜丹辉
俞海兵
鲁俊东
方军
李新民
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China General Nuclear Power Corp
CGN Power Co Ltd
Guangdong Nuclear Power Joint Venture Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
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China General Nuclear Power Corp
CGN Power Co Ltd
Guangdong Nuclear Power Joint Venture Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
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Application filed by China General Nuclear Power Corp, CGN Power Co Ltd, Guangdong Nuclear Power Joint Venture Co Ltd, Suzhou Nuclear Power Research Institute Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN202110706595.2A priority Critical patent/CN113406284A/en
Publication of CN113406284A publication Critical patent/CN113406284A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • 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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    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/04—Filters; Permeable or porous membranes or plates, e.g. dialysis
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/44—Means for regulation, monitoring, measurement or control, e.g. flow regulation of volume or liquid level
    • C—CHEMISTRY; METALLURGY
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    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/48—Automatic or computerized control
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    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • 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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
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Abstract

The invention discloses an online testing device for biological biocides, which comprises a water taking unit, a water inlet distribution unit, one or more testing units, dosing units, pipelines connected among the units and a control module used for controlling the units, wherein each testing unit is correspondingly provided with at least one dosing unit, the water taking unit is used for drawing seawater and storing the seawater, the water inlet distribution unit is used for conveying the seawater in the water taking unit to the testing units, and the dosing units are used for adding medicaments into the testing units. The biological biocide test device can realize dynamic evaluation of biological biocides, and organisms directly enter the test unit along with water, so that the biological biocides are more representative; and the pipeline mixer is arranged, so that the test medicament and the water can be mixed in advance and then added into the test unit, and the test device has better accuracy of the test result.

Description

Online testing device and method for biological biocide
Technical Field
The invention particularly relates to an on-site testing device for a biological antifouling (biocidal) agent and a testing method for evaluating the biological biocidal agent by using the device.
Background
Coastal power plants (including nuclear power plants and thermal power plants) and other plants that use seawater as cooling water require physicochemical treatment of the cooling seawater to prevent the attachment of marine organisms to the area through which the cooling seawater flows, thereby reducing fluid flow, reducing heat transfer efficiency, and even damaging industrial equipment or pipelines. Many techniques have therefore been developed to prevent the attachment and growth of marine organisms. In the course of this technology development, chemical treatment is the most common technology, but is often faced with the need to add or replace new chemicals (anti-fouling or biocidal) to the circuit, so before replacing the chemicals, it is necessary to assess whether the new chemicals are effective in preventing the attachment and growth of marine organisms.
In the prior art, the name is as follows, if the application number is 201420642614.5: a Chinese utility model patent of a marine organism biocide performance evaluation device discloses a performance evaluation device which comprises a titanium heat exchanger, a pipeline, a pump, a dosing tank, a marine organism observation pool, a liquid flowmeter and a valve, but the device is still used for laboratory evaluation, is essentially still static test evaluation, and only increases the flow of seawater; marine organisms are placed artificially and cannot completely represent actual conditions on site; the chemicals were added directly to the observation box without prior thorough mixing. The above defects make the test result of the performance evaluation device in the patent have certain limitations.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the present invention aims to provide an on-site test device for marine organism biocide (antifouling) agents, which is used for evaluating the effect of new chemical test agents on marine organism attachment and growth.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a marine organism biocide test device, includes water intaking unit, the distribution unit of intaking, one or more test unit, adds the medicine unit, connects the pipeline between each unit and is used for carrying out the control module controlled to each unit, every the test unit correspondence is provided with at least one add the medicine unit, the water intaking unit is used for drawing the sea water and stores, the distribution unit of intaking be used for with sea water in the water intaking unit is carried extremely the test unit, add the medicine unit be used for to add the medicament in the test unit.
According to some preferred embodiment aspects of the present invention, the device comprises a plurality of test units arranged in parallel, and at least two dosing units are correspondingly arranged on at least one test unit. The number of the test chambers can be specifically configured according to the types and the dosage of specific test medicaments.
According to some preferred embodiment aspects of the present invention, the dosing unit comprises a dissolution tank for storing the test agent that has been prepared and a dosing metering pump for controlling the amount of test agent added to the test unit. In some embodiments, the metering pump is of an electromagnetic diaphragm type, the pump head is made of PVC material, and a multifunctional back pressure valve is arranged at the outlet and has a stroke adjusting function.
According to some preferred aspects of the invention, the test unit comprises a test chamber and a sample holder disposed within the test chamber for holding a test strip. The proof box is used for experimental development, and the front side and the top cap of proof box are equipped with transparent observation window, and the structure can be opened to the proof box upper cover, sets up sealing mechanism such as sealing washer, guarantees the seal of proof box during the operation. And a sample fixer is arranged in each test box and used for installing a test piece in the test box. The sample holder may take the form of a hook or the like.
According to some preferred implementation aspects of the invention, baffles are arranged in the test chamber at positions corresponding to the water inlets, and the baffles are used for uniformly distributing the inlet water so as to reduce impact and influence of the water flow on original liquid in the test chamber.
According to some preferred implementation aspects of the invention, the baffle comprises a connecting part and a blocking part, the connecting part is used for fixing the blocking part in the test box, the connecting part is positioned above the water inlet, and the plane of the blocking part is perpendicular to the inflow direction of the liquid in the water inlet.
According to some preferred implementation aspects of the invention, each test chamber is provided with an overflow pipeline, the bottom of each test chamber is provided with a drainage pipeline, and the overflow pipeline is communicated with the drainage pipeline.
According to some preferred embodiment aspects of the present invention, the intake water distribution unit is disposed between the intake unit and the dosing unit; the distribution unit of intaking is including the intake pump, governing valve, check valve and manometer and the flow sensor that set gradually, the point of adding medicine of adding the medicine unit is located the check valve with between the test unit. The water inlet pump provides water for each corresponding test box, and in order to prevent seawater corrosion, the cavity of the water pump and the hydraulic component need to be made of anti-corrosion materials. The flow sensor is used for feeding back the seawater flow of each test box, and the PLC is used for adjusting the frequency converter of the water inlet pump to ensure that the flow runs under a set value. The flow sensor can be selected from a non-contact type or an electromagnetic type. Each test chamber was equipped with a transparent plastic rotameter for calibration and replenishment of the flow sensor.
According to some preferred implementation aspects of the invention, a pipeline mixer is further arranged on the pipeline between the dosing unit and the test unit, and the pipeline mixer is used for mixing seawater in the pipeline with the added test agent. Namely, the pipeline mixer is arranged behind the dosing point and is used for quickly and uniformly mixing the liquid medicine and the seawater.
According to some preferred aspects of the invention, the water intake unit comprises a suction pump placed in the sea water and used for conveying the sea water into a storage tank. The seawater suction pump is a submersible pump and is arranged at a seawater intake point, the submersible pump is arranged at a certain distance from the seabed, and a sand prevention grid is arranged at a water suction port. And in order to inhibit the growth of marine organisms on the pump body and ensure the normal operation of the submersible pump, an ultrasonic anti-fouling device is also arranged near the submersible pump. In some embodiments, the water intake unit further comprises a desander installed at the top of the water storage tank, and the seawater filtered by the desander automatically flows into the water storage tank. The desander is a rotary drum filter and is used for desanding the seawater pumped by the submersible pump, and the desander can continuously and automatically discharge seaweed, impurity particles, fine sand and the like in the seawater. The water storage tank is used for storing fresh seawater, and an ultrasonic liquid level sensor is mounted at the top of the tank to feed back liquid level information in real time. When the liquid level in the water storage tank is lower than the preset value, the submersible pump is automatically started to pump water until the liquid level in the water storage tank rises to the preset height again. And when the liquid level in the water tank is higher than a preset value, redundant seawater is discharged from the overflow port, so that the water level is ensured to be stable. A temperature sensor and a conductivity sensor are arranged in the water storage tank and used for monitoring the temperature and the salt content of the seawater.
The testing device is provided with a main drainage pipe, and an overflow pipeline of an overflow outlet of each test box is connected with the main drainage pipe through a branch pipe; the overflow port of the water storage tank is also connected to the main drainage pipe; meanwhile, the bottom of each test box is provided with a water outlet and a water drainage pipeline which are communicated with a water drainage main pipe through a ball valve so as to empty seawater when necessary.
According to some preferred embodiments of the present invention, a blank sample holder is installed in the water storage tank, and the blank sample holder is used for holding the same test piece as that in the test chamber as a test blank sample.
According to some preferred aspects of the invention, the control module comprises an electrical control box and a control panel. The electric control box is used for supplying power to instruments and rotating equipment such as a pump body and a valve and is independently arranged outside the equipment; in order to prevent seawater corrosion, the box body is formed by machining a 316L sheet metal, and is of a waterproof design and sealed waterproof grade IP 66. The operation panel is arranged on the upper part of the panel of the electric cabinet, is of a touch screen type, is used for displaying data such as flow, liquid level, temperature, conductivity and the like in real time, and can be used for setting system parameters and recording running states; the collected data are uniformly stored in a memory of the control panel, and a data output interface is supported, so that the data are conveniently exported; in order to prevent seawater corrosion, all cable connections adopt industrial heavy-load waterproof joints.
According to some preferred embodiments of the invention, the test unit comprises a container for mobile transport and fixation of the whole test unit, the container being of 20GP standard size. The outer surface of the container is packaged by an aluminum-plastic thin plate, and heat insulation cotton is filled in a gap between the outer surface of the container and the aluminum-plastic thin plate, so that heat exchange between the inside and the outside of the container is prevented, and energy consumption is reduced. The container is internally provided with a water inlet distribution unit, a dosing unit, a test unit and an electrical control unit, and the container is internally provided with an air conditioner to ensure that the internal temperature is relatively constant.
Furthermore, the container is designed with a typhoon prevention measure, the four corners of the container are reinforced by adopting ground anchors to be tied with the ground, and the steel wire pull ropes are adjusted and tightened by adopting turn-buckle bolts. The top of the container is provided with lightning protection conductive galvanized round steel along the periphery and reliable grounding is arranged. The grounding device is buried 2m underground, 4 multiplied by 40mm galvanized angle steel or galvanized steel pipe with diameter of 40mm is used, and the grounding resistance is not more than 4 ohm.
Furthermore, a video monitoring ball machine is installed in the center of the top in the container to monitor the test equipment in the container, and real-time video transmission can be realized through a 4G network, so that testers can know the test progress and emergency at any time.
The invention also provides a test method for biocide evaluation according to the online biological biocide test device, which comprises the following steps:
1) filling water: firstly, starting a suction pump in a water taking unit, and conveying water in a water source to a water storage tank; when the liquid level in the water storage tank reaches 40% of the highest limit of the water storage tank, starting a water inlet pump in a water inlet distribution unit to fill the test chamber with water;
2) adding medicine: when the water level of the test box is stable, the water inlet of the water inlet pump of the test box is stable, and the flow reaches a preset value, a dosing metering pump in the dosing unit is opened to dose medicine into the test box;
3) and (3) testing:
and (4) immersing test pieces on the sample holders in the water storage tank and the test box into seawater, starting timing and starting the test. The number of test pieces of each material is at least two.
The test tests show the adhesion of marine organisms on the surface of the test piece in various marine organism antifouling (biocidal) agent environments, or the corrosion of the marine organism antifouling (biocidal) agent on various materials (test pieces).
And when the period required by the test is reached, the dosing pump, the water inlet pump and the seawater suction pump are closed, and the water storage tank and the seawater in the test chamber are emptied. And taking down the test piece for relevant test and analysis.
Due to the adoption of the technical scheme, compared with the prior art, the biological biocide test device can realize dynamic evaluation of the biological biocide, and organisms directly enter the test unit along with water and are more representative; and the pipeline mixer is arranged, so that the test medicament and the water can be mixed in advance and then added into the test unit, and the test device has better accuracy of the test result.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a biological biocidal test device in a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a method of testing using a biological biocide testing device in a preferred embodiment of the present invention;
in the drawings: 1. a seawater suction pump; 2. a water storage tank; 3. a desander; 4. a feed water distribution unit; 41. a water inlet pump; 42. adjusting a valve; 43. a check valve; 5. a pipeline mixer; 6. a test unit; 61. a test chamber; 62. a baffle plate; 63. an overflow conduit; 64. a water discharge pipeline; 65. a ball valve; 7. a dosing unit; 71. dissolving a medicine box; 72. dosing a metering pump; 8. a pressure gauge; 9. a liquid level meter; 10. a temperature display meter; 11. an electromagnetic flow meter.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
EXAMPLE 1 Marine Biocide field test apparatus
Referring to fig. 1, the on-site testing device for marine organism antifouling (biocidal) agent in the embodiment comprises a water intake unit, a water intake distribution unit 4, a dosing unit 7, a testing unit 6, a control module and a container. Each unit and the relationship between the units are described in detail below:
the water taking unit comprises a drawing pump 1, a water storage tank 2 and a desander 3 arranged at the top of the water storage tank 2, wherein the drawing pump 1 is directly placed in seawater and used for conveying the seawater into the water storage tank 2. The seawater suction pump 1 is a submersible pump, is arranged at a seawater intake point, is arranged at a certain distance from the seabed, and is provided with a sand prevention grid at a water suction port. And in order to inhibit the growth of marine organisms on the pump body and ensure the normal operation of the submersible pump, an ultrasonic anti-fouling device is also arranged near the submersible pump. The desander 3 is a rotary drum filter and is used for desanding the seawater pumped by the submersible pump, the desander 3 can continuously and automatically discharge seaweed, impurity particles, fine sand and the like in the seawater, and the seawater filtered by the desander 3 automatically flows into the water storage tank 2. The water storage tank 2 is used for storing fresh seawater, and an ultrasonic liquid level sensor, namely a liquid level meter 9 is arranged at the top of the tank to feed back liquid level information in real time. When the liquid level in the water storage tank 2 is lower than the preset value, the submersible pump is automatically started to pump water until the liquid level in the water storage tank rises to the preset height again. An overflow opening is arranged on one side of the water storage tank 2 and is communicated with the main pipe drainage main pipe, when the liquid level in the water tank is higher than a preset value, redundant seawater is discharged from the overflow opening, and therefore the water level stability is ensured. A temperature sensor and a conductivity sensor are arranged in the water storage tank 2 and used for monitoring the temperature and the salt content of the seawater, and a temperature display meter 10 and a valve are arranged on a main water outlet pipe of the water storage tank 2.
Specifically, in this embodiment, the maximum flow rate of the seawater suction pump 1 is 8m3H, the pore space of the sand-proof grid filter screen is 5mm, the volume of the water storage tank 2 is 2m3The liquid level meter 9 in the water storage tank 2 is an ultrasonic liquid level sensor.
The water inlet distribution units 4 are arranged between the water outlet main pipe of the water storage tank 2 and the test units 6, and the number of the water inlet distribution units is set corresponding to the number of the test units 6. Each set of water inlet distribution unit 4 includes a water inlet pump 41, a regulating valve 42, a check valve 43, a pressure gauge 8 and a flow sensor, i.e., an electromagnetic flow meter 11, which are sequentially arranged. The water inlet pump 41 provides water inlet for each corresponding test chamber 61 and prevents seawater corrosionAnd corrosion-resistant materials are needed for the water pump cavity and the hydraulic component. The flow sensor (electromagnetic flowmeter 11) is used for feeding back the seawater flow of each test box 61, and the PLC is used for adjusting the frequency converter of the water inlet pump 41 to ensure that the flow runs under a set value. Each test chamber 61 is provided with a transparent plastic rotameter (specification 0-3 m)3H) for correction and supplementation of the flow sensor. The maximum flow rate of the water inlet pump 41 in this embodiment is 1.5m3And h, the flow sensor is in a non-contact type.
The medicine adding unit 7 comprises a medicine dissolving box 71 and a medicine adding metering pump 72, the medicine dissolving box 71 is used for storing prepared test medicines, and the medicine adding metering pump 72 is used for controlling the amount of the test medicines added to the test unit 6. In this example, the test agent is an oxidizing or non-oxidizing marine antifouling (biocidal) agent, such as sodium hypochlorite, quaternary ammonium salts, and the like. The metering pump 72 is of an electromagnetic diaphragm type, the pump head is made of PVC materials, and a multifunctional back pressure valve is arranged at the outlet and has a stroke adjusting function.
The test unit 6 includes a test chamber 61 and a sample holder provided in the test chamber 61 for holding a test piece. In this embodiment, a blank sample holder is installed in the water storage tank 2 for installing a test piece identical to that in the test chamber 61 as a test blank sample. The sample holder and the blank holder are of the same construction, e.g. both are hooks. Test box 61 is used for experimental the developing, and test box 61's front side and top cap are equipped with transparent observation window, and test box 61 upper cover sets up sealing mechanism such as sealing washer for can opening the structure, guarantees test box 61's leakproofness during the operation. One or more sample holders are mounted in each test chamber 61 for mounting test strips in the test chamber 61. The sample holder may take the form of a hook or the like. In this embodiment, four sets of test units 6 are arranged in parallel (in parallel), wherein the three sets of test units 6 are respectively and correspondingly provided with a set of dosing unit 7, and the remaining set of test units 6 are correspondingly provided with two sets of dosing units 7, so as to increase the application range of the test device in this embodiment.
Specifically, in this example, 4 sets of test chamber 61 were provided, and the volume of test chamber 61 was 150L. Correspondingly, 4 sets of water inlet pumps 41, flow sensors, plastic rotameters and dosing devices (one dissolving medicine tank 71, one dosing pump and a pipeline mixer 5 after a dosing point) are arranged, as shown in fig. 1.
The position that corresponds the water inlet in the test box 61 in this embodiment is provided with baffle 62, and baffle 62 is used for evenly distributed to intake to slow down the impact and the influence of the rivers that get into original liquid in to test box 61. An overflow pipeline 63 is arranged on each test box 61, a drainage pipeline 64 is arranged at the bottom of each test box 61, and the overflow pipeline 63 is communicated with the drainage pipeline 64. The test device of the embodiment is provided with a main drain pipe, and the overflow pipeline 63 of the overflow outlet of each test box 61 is connected with the main drain pipe through a branch pipe; the overflow port of the water storage tank 2 is also connected with a main drainage pipe; meanwhile, the bottom of each test box 61 is provided with a water outlet which is communicated with a water drainage main pipe through a ball valve 65 so as to empty seawater when necessary.
Baffle 62 includes connecting portion and stop block, and connecting portion are used for fixing stop block in test box 61, and connecting portion are located the top of water inlet, and stop block is close to test box 61's water inlet, and the plane at stop block place is perpendicular with the inflow direction of liquid in the water inlet.
A pipeline mixer 5 is further arranged on the pipeline between the dosing unit 7 and the test unit 6, and the pipeline mixer 5 is used for mixing the seawater in the pipeline with the added test medicament. Namely, the pipeline mixer 5 is arranged behind the dosing point and used for quickly and uniformly mixing the liquid medicine and the seawater. The specification of the line mixer 5 in this embodiment is DN 25.
The control module comprises an electric control box and a control panel. The electric control box is used for supplying power to instruments such as a pressure gauge, a liquid level meter and the like and rotating equipment such as a pump body and a valve, and is independently arranged outside the equipment; in order to prevent seawater corrosion, the box body is formed by machining a 316L sheet metal, and is of a waterproof design and sealed waterproof grade IP 66. The operation panel is arranged on the upper part of the panel of the electric cabinet, is of a touch screen type, is used for displaying data such as flow, liquid level, temperature, conductivity and the like in real time, and can be used for setting system parameters and recording running states; the collected data are uniformly stored in a memory of the control panel, and a data output interface is supported, so that the data are conveniently exported; in order to prevent seawater corrosion, all cable connections adopt industrial heavy-load waterproof joints.
The test device in the embodiment further comprises a container for movable transportation and fixation of the whole test device, and the container is in a 20GP standard specification. The outer surface of the container is packaged by an aluminum-plastic thin plate, and heat insulation cotton is filled in a gap between the outer surface of the container and the aluminum-plastic thin plate, so that heat exchange between the inside and the outside of the container is prevented, and energy consumption is reduced. The container is internally provided with a water inlet distribution unit 4, a dosing unit 7, a test unit 6 and a control module, and the container is internally provided with an air conditioner to ensure that the internal temperature is relatively constant.
The container is designed with a typhoon-preventing measure, the four corners of the container are reinforced by adopting ground anchors and ground, and the steel wire pull ropes are adjusted and tensioned by adopting turn-buckle bolts. The top of the container is provided with lightning protection conductive galvanized round steel along the periphery and reliable grounding is arranged. The grounding device is buried 2m underground, 4 multiplied by 40mm galvanized angle steel or galvanized steel pipe with diameter of 40mm is used, and the grounding resistance is not more than 4 ohm.
A video monitoring ball machine is installed in the center of the top in the container to monitor the test equipment in the container, and real-time video transmission can be realized through a 4G network, so that testers can know the test progress and the emergency situation at any time.
Example 2 test method for marine antifouling (biocidal) agent evaluation
As shown in fig. 1 and 2, the test method for evaluating the marine antifouling (biocidal) agent by using the marine antifouling (biocidal) agent field test device in example 1 specifically comprises the following steps:
1) system setup
The method comprises the setting of the flow of the seawater drawing pump 1, the flow of the water inlet pump 41 of the test box 61 and the flow of the dosing metering pump 72.
Specifically, the flow of the seawater suction pump 1 and the flow of the test box 61 water inlet pump 41 are set according to the test flow requirement; the amount of the chemical to be added is calculated according to the type of the chemical to be tested, the requirement of the use concentration and the fluid flow of the test chamber 61, and the flow of the dosing metering pump 72 is set according to the amount of the chemical to be added.
2) Flow regulation
The seawater suction pump 1 is started to fill the water storage tank 2. When the 50% liquid level is reached, the test chamber 61 is filled with water by opening the water inlet pump 41 of the test chamber 61. And after the water level of the test box 61 reaches the requirement, observing whether the flow rates of the seawater suction pump 1 and the water inlet pump 41 of the test box 61 are stable or not, and whether the flow rates are consistent with the preset flow rate or not. If not, adjusting until consistent.
3) Dosing
When the test box 61 water level is stable, the test box 61 water inlet pump 41 water inlet is stable and the flow reaches the preset back, the dosing pump is opened to dose.
4) Test of
The test piece on the sample holder in the water tank 2 and the test chamber 61 is immersed in seawater to start timing, and the test is started. The material of the test piece is determined according to the test requirements, and the number of the test pieces of various materials is at least two. The test can test the adhesion condition of marine organisms on the surface of the test piece under various marine organism antifouling (biocidal) agent environments, and can also test the corrosion condition of the marine organism antifouling (biocidal) agent on various materials (test pieces). And when the period required by the test is reached, closing the metering pump 72, the water inlet pump 41 and the seawater suction pump 1, and emptying the water storage tank 2 and the seawater in the test box 61. And taking down the test piece for relevant test and analysis.
The test device can also be used for the field test of the antifouling or biocidal algicide of the fresh water direct current or circulating cooling water, and in this case, the special environmental requirement of seawater corrosivity can not be considered. If a factory building is in the field, the design of the container can be omitted. If there is no typhoon environment, the fixed design is not considered.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The online testing device for the biological biocides is characterized by comprising a water taking unit, a water inlet distribution unit, one or more testing units, dosing units, pipelines connected among the units and a control module used for controlling the units, wherein each testing unit is correspondingly provided with at least one dosing unit; a pipeline mixer is further arranged on the pipeline between the dosing unit and the test unit and used for mixing water in the pipeline with the added test medicament; the water intake unit comprises a suction pump and a water storage tank, wherein the suction pump is placed in a water source and used for conveying water into the water storage tank.
2. The on-line testing device of biological biocides as claimed in claim 1, characterized in that: the device comprises a plurality of test units arranged in parallel, wherein at least one test unit is correspondingly provided with at least two dosing units.
3. The on-line testing device of biological biocides as claimed in claim 2, characterized in that: the medicine adding unit comprises a medicine dissolving box and a medicine adding metering pump, the medicine dissolving box is used for storing prepared test medicines, and the medicine adding metering pump is used for controlling the amount of the test medicines added into the test unit.
4. The on-line testing device of biological biocides as claimed in claim 1, characterized in that: the test unit comprises a test box and a sample fixer arranged in the test box, wherein the sample fixer is used for fixing a test piece.
5. The on-line testing device of biological biocides as claimed in claim 1, characterized in that: and a baffle is arranged in the test box corresponding to the water inlet and used for slowing down the impact of water flow on the original liquid in the test box.
6. The on-line testing device of biological biocides of claim 5, characterized in that: the baffle comprises a connecting part and a blocking part, the connecting part is used for fixing the blocking part in the test box, the connecting part is positioned above the water inlet, and the plane where the blocking part is positioned is perpendicular to the inflow direction of liquid in the water inlet.
7. The on-line testing device of biological biocides of claim 5, characterized in that: each test box is provided with an overflow pipeline, the bottom of each test box is provided with a drainage pipeline, and the overflow pipeline is communicated with the drainage pipeline.
8. The on-line testing device of biological biocides as claimed in claim 1, characterized in that: the water intake distribution unit is arranged between the water intake unit and the test unit; the distribution unit of intaking is including the intake pump, governing valve and the check valve that set gradually, add the medicine point that adds the medicine unit and be located the check valve with between the test unit.
9. The on-line testing device of biological biocides as claimed in claim 1, characterized in that: and a blank sample fixer is arranged in the water storage tank and used for fixing a blank sample.
10. A test method for biocide evaluation in the on-line test set of biological biocides according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
1) filling water: firstly, starting a suction pump in a water taking unit, and conveying water in a water source to a water storage tank; when the liquid level in the water storage tank reaches at least 40% of the highest limit of the water storage tank, starting a water inlet pump in the water inlet distribution unit to fill the test chamber with water;
2) adding medicine: when the water level of the test box is stable, the water inlet of the water inlet pump of the test box is stable, and the flow reaches a preset value, a dosing metering pump in the dosing unit is opened to dose medicine into the test box;
3) and (3) testing:
immersing test pieces on a sample fixer in a water storage tank and a test box into seawater, starting timing and starting a test; when the period required by the test is reached, the dosing pump, the water inlet pump and the seawater suction pump are closed, and the water storage tank and the seawater in the test chamber are emptied; taking down the test piece for relevant test and analysis.
CN202110706595.2A 2021-06-24 2021-06-24 Online testing device and method for biological biocide Pending CN113406284A (en)

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