139 results about "PH meter" patented technology

The invention discloses a regulation and control system and method of a pH meter in a waste lithium battery recovery process, and relates to the technical field of waste battery recovery treatment. The system comprises a central control module, a liquid caustic soda adjusting device and a liquid acid adjusting device, wherein a pH meter measures the pH value of a leaching solution of a leaching-stage reaction kettle in a waste lithium battery recycling process in real time; the central control module compares the pH value, measured in real time, of the leaching liquid in the leaching-stage reaction kettle with the pH value preset range of the leaching stage, acid liquid or alkali liquid is added into the leaching-stage reaction kettle according to the comparison result, and the pH value of the leaching liquid is adjusted to be within the pH value preset range of the leaching stage; the central control module can also identify interference factors measured by the pH meter and compensate the slope according to the current temperature so as to compensate the pH value, measured by the pH meter, of the leachate. According to the method, accurate control over the pH value in the leaching process can be effectively achieved, the recovery efficiency and quality of the waste lithium batteries are improved, and the production cost is reduced.

The utility model belongs to the technical field of heat exchanger cleaning, and discloses a heat exchanger cleaning device which comprises a box body, a circulating system and an acidity meter, acid liquid is contained in the box body, the circulating system is connected with the box body and a heat exchanger and can enable the acid liquid in the box body to enter the heat exchanger in a circulating mode, and the acidity meter comprises a probe and a display screen. The probe is arranged in the box body and used for detecting the concentration of the acid liquid in the box body, and the display screen is used for displaying the real-time acid concentration of the acid liquid. According to the heat exchanger cleaning device provided by the utility model, the acid liquid is used for circularly cleaning the heat exchanger, so that the heat exchanger is prevented from being disassembled and assembled, and the working difficulty of workers is reduced; it is ensured that the acid liquid can chemically react with scale every time the acid liquid enters and exits the heat exchanger, effective cleaning is achieved every time the acid liquid enters and exits the heat exchanger, and the cleaning efficiency of the heat exchanger is effectively improved.

The invention provides an analysis method for measuring the pH value of an aqueous solution by using methyl red, and belongs to the technical field of pH value measurement. The analysis method comprises the following steps: mixing a standard solution and a methyl red solution with different pH values to obtain a color developing solution, then detecting an absorbance curve of the color developing solution by utilizing a detection device, reading absorbance, and drawing a working curve by taking the pH value of the color developing solution as a horizontal coordinate x and the absorbance as a vertical coordinate y; mixing a to-be-detected water sample and the methyl red solution, detecting to obtain an absorbance value, substituting the absorbance value into the working curve, calculating the pH value of the to-be-detected water sample, and displaying the pH value of the to-be-detected water sample. According to the analysis method, the acid-base indicator is used as an accurate pH meter, and the pH value of the solution can be measured on line, so that the application range of the acid-base indicator is widened.

The utility model relates to a jacket type reaction kettle. Comprising a kettle body and a jacket sleeved on the peripheral side of the kettle body, the kettle body is vertically arranged, a liquid outlet is formed in the bottom of the kettle body, and a cleaning opening, a feeding opening, a thermometer opening, a standby opening, a chlorine opening, a nitrogen opening, a DI inlet, a pH meter opening, a liquid level meter opening and an exhaust opening are further formed in the kettle body; a jacket inlet is formed in the upper part of the jacket; one part of DI water in the DI water tank enters the kettle body, the other part of DI water is connected with the cleaning port, the rest part of DI water enters the jacket, and the jacket outlet is connected with the DI water tank; the chlorine water tank is connected with the chlorine opening; the nitrogen tank is connected with the nitrogen port; a spin dryer is connected with the liquid outlet; and an exhaust pipeline is mounted on the exhaust port. The reaction kettle is suitable for various chemical reaction processes, and can meet the complex process requirements of heating, heat preservation, cooling and the like in the reaction process.

The invention provides a method and a system for accurately controlling the pH value of single-tank outlet light salt brine in multiple groups of electrolytic tanks, comprising multiple groups of electrolytic tanks, a tank inlet brine branch pipe is connected with a diluted hydrochloric acid branch pipe, the diluted hydrochloric acid branch pipe is provided with a diluted hydrochloric acid flowmeter and a diluted hydrochloric acid regulating valve, and the tank outlet light salt brine branch pipe is connected with a light salt brine sampling branch pipe. Each light salt brine sampling branch pipe is provided with a light salt brine sampling program control valve and a simulation assignment module, the light salt brine sampling branch pipes are connected with a light salt brine sampling header pipe, and the light salt brine sampling header pipe is provided with a sampling adjusting valve, a sampling flow meter and a pH meter; the diluted hydrochloric acid flow meter, the diluted hydrochloric acid adjusting valve, the light salt brine sampling program control valve, the sampling adjusting valve, the sampling flow meter and the pH meter are all connected into a DCS system, and the diluted hydrochloric acid adjusting valve adjusts the opening degree according to the detection value of the pH meter. Precise adjustment and control of pH of light salt brine discharged from each single cell in multiple groups of electrolytic cells are realized through a pH meter and a control loop thereof, the anode efficiency and the quality of a liquid caustic soda product are improved, and the production stability is improved.

To provide a hypochlorous acid water generator capable of stabilizing the pH value of generated hypochlorous acid water.SOLUTION: The control unit 81 calculates a deviation between the pH value of the aqueous solution in the water storage tank 6 detected by the pH meter 7 and the target pH value, determines the amounts of the sodium hypochlorite aqueous solution to be supplied to the raw water flowing through the first conduit 12 and chlorine to be supplied to the raw water flowing through the second conduit 13 so as to bring the calculated deviation close to 0, and supplies the sodium hypochlorite aqueous solution and chlorine.SELECTED DRAWING: Figure 1

The simple device for testing the pH value of the rural well water comprises a transparent bottle body used for containing the well water, an opening is formed in the top of the bottle body, a bottle cap is detachably connected to the opening in a sealed mode, and a pH value testing liquid releasing mechanism is arranged at the top in the bottle cap; the pH value test liquid release mechanism comprises a clamping assembly and an elastic stabbing rod assembly, a test liquid containing block is detachably clamped in the clamping assembly, the elastic stabbing rod assembly comprises a stabbing rod, in an initial state, the test liquid containing block is located below the stabbing rod, and the test liquid containing block is provided with a stabbing structure on a movable path at the tail end of the stabbing rod. The pH value testing liquid is released into well water by puncturing the testing liquid accommodating block, the pH value of the well water can be preliminarily judged through the colorimetric card after the pH value testing liquid is uniformly mixed, the color development result is simple, visual and easy to understand, the operation steps are simple and rapid, a high-quality electronic pH meter is not needed, and the cost is low. And the detection requirements of people dispersion, low frequency and low precision in vast rural areas are met.

The invention provides a full-automatic liquid preparation device, a liquid preparation method and a computer readable storage medium, and belongs to the technical field of chemical liquid preparation. The device comprises a main rack and an operation surface system integrated on the main rack, wherein a solution storage unit, a solution mixing unit, a conveying unit, a detection unit, a valve unit, a control unit and a pipeline system are integrated on the operation surface system; the solution storage unit comprises a standard barrel for storing a solution; the liquid mixing unit comprises a liquid mixing box, and a magnetic pump for stirring mixed liquid is arranged in the liquid mixing box; the conveying unit comprises a diaphragm pump for extracting the high-concentration stock solution, and the diaphragm pump is connected with the standard barrel and the liquid mixing box through a pipeline system; the detection unit comprises a pulse type liquid level sensor and a PH meter; the valve unit comprises a water inlet valve and a drain valve; the control unit is used for inputting liquid preparation parameters and controlling all the components to work cooperatively. The full-process liquid preparation is automatic, manual intervention is not needed, the safety risk of manual liquid preparation is avoided, and meanwhile the liquid preparation efficiency is improved.

The utility model provides an all-dimensional cleaning device for a PH meter. The all-dimensional cleaning device for the PH meter solves the problems that existing cleaning equipment is not comprehensive and thorough in PH meter cleaning, low in efficiency and the like. The device comprises a driving mechanism located on the upper portion and a cleaning mechanism located on the lower portion, the driving mechanism comprises a translation assembly, a lifting assembly is driven on the translation assembly, a rotating assembly is driven on the lifting assembly, and a PH meter is arranged on the rotating assembly; the cleaning mechanism comprises a cleaning tank, a spiral spray pipe is arranged in the cleaning tank, a spray-washing space is formed in the inner circumference of the spiral spray pipe, the spiral spray pipe is provided with a plurality of nozzles facing the spray-washing space, and the PH lowering meter extends into the spray-washing space. The all-dimensional cleaning device for the PH meter has the advantages of being efficient, comprehensive, accurate and automatic, the cleaning quality of the PH meter can be effectively improved, the manual operation cost is reduced, the overall efficiency of a production line is improved, and good adaptability and reliability are achieved.

The utility model discloses a button formula pH meter, including work table, be provided with track on work table, the track is slidably installed with support frame, and the support frame end clamping has test pen, and the work table surface is opened in the symmetry and is placed with the slot, and the buffer solution bottle is placed in the slot, and the buffer solution bottle top is slidably installed with the lifting seat through the stand, and the lifting seat both sides are symmetrically provided with the sealing plate, and the sealing plate middle part is opened with the through -hole, and the through -hole position is equipped with the movable plate and movable cylinder, and the movable cylinder is installed with the sealing plug with the through -hole cooperation, and the spring is equipped outside the stand and is cooperated with the limiting nut and the limiting plate, and the lifting seat is provided with the pressure of pressing down, makes the sealing plate tightly cover in the buffer solution bottle top, guarantees the buffer solution seal, and when the test pen is contacted with the buffer solution and is contacted with the buffer solution bottle inside when calibrating and enters the movable plate and movable cylinder, realizes dynamic sealing, guarantees the stable of testing process.

The application discloses a kind of desulfurization slurry density, PH value multifunctional measuring device, including tank, the upper end of tank is provided with cover plate, the lower end of tank is provided with and its inside is communicated with feed nozzle, feed nozzle is located the one end in the outside of tank and is communicated with the bottom of absorption tower by first liquid inlet pipe, the one end of feed nozzle is located in the inside of tank and is communicated with the lower end of cloth distribution pipeline, the upper end of cloth distribution pipeline extends to the below of cover plate;The part of the side of tank is close to upper end is provided with overflow, the part of the side of tank is close to lower end is provided with sand outlet, the one side of middle part of tank is provided with PH meter interface, the other side of middle part of tank is provided with two differential pressure transmitter interfaces at intervals.The application is integrated with slurry PH value measurement, slurry density measurement, slurry sampling function, relative single-function unit type measuring device effectively saves equipment cost, and reduces operation and maintenance cost.

The utility model relates to an electrodialysis device for concentrating and recycling nitric acid waste liquid in an aluminum material surface treatment process. The electrodialysis device comprises an electrodialysis membrane stack, a control system, a conductivity / pH meter, an electrode liquid tank, a nitric acid waste liquid tank, a dilute nitric acid tank and a direct-current power supply. The device provided by the utility model overcomes the defects in the traditional method by improving the problem of uniform dispersion of liquid in the net-shaped body part of the chamber frame in the electrodialysis device, can effectively reduce the membrane resistance, prolong the service life of the membrane, improve the equipment efficiency, reduce the production cost and reasonably utilize resources, and is simple to operate and low in cost. The method can better solve the problem of treatment of nitric acid wastewater, and has good environmental benefits and economic benefits.

The application relates to the technical field of wastewater treatment, in particular to an automatic dosing control device for industrial wastewater treatment, which comprises a tank body, a tank cover, a motor, a dosing pipe, a pH meter, a filter plate, an agitation assembly and an adjusting assembly; the motor and the dosing pipe are arranged on the tank cover; the pH meter is arranged in the tank body; when the pH meter detects the pH value change of wastewater, the dosing pipe is controlled to add reagents; the filter plate is arranged in the tank body; the agitation assembly penetrates through the filter plate and is connected with the dosing pipe. The agitation assembly and the adjusting assembly can filter the precipitates formed in the wastewater softening process in a pressure filtration mode, and the filter plate is reset after the filtration is completed; air is used to extrude from the top of the filter plate during the resetting process, so that part of the precipitates adhered to the bottom of the filter plate are removed, and the continuous and stable operation of the desulfurization wastewater zero discharge process is ensured.

The utility model discloses a PH and density detection system for a wet desulphurization process. The PH and density detection system comprises a plurality of sampling branch pipes, a sampling header pipe and a detection tank, the number of the sampling branch pipes corresponds to the number of circulating pumps on the desulfurizing tower, one end of each sampling branch pipe is connected with an outlet of the circulating pump, the other end of each sampling branch pipe is connected with a sampling header pipe, the sampling header pipe is connected with a slurry inlet in the bottom of a detection tank, and the detection tank is provided with a PH meter interface, a differential pressure densimeter interface and an overflow port. The overflow port is connected with the desulfurization tower through a pipeline; according to the utility model, slurry in all directions in the tower can be comprehensively collected in real time in a manner of sampling at the outlet of the circulating pump, so that the accuracy of PH and density detection data is improved; through a positive pressure sampling mode, pipeline blockage caused by a static pressure self-flowing mode can be avoided; through the electric regulating valves at the head ends of the branch pipes, the flow of each branch sampling pipeline can be balanced, the flow speed of sampling slurry is controlled, the flow stability is ensured, and the abrasion of an instrument probe is reduced.

This invention relates to the field of soil testing technology, and more specifically, to a portable pH meter with distillation function. The meter includes a main body, a power module, a water storage module, a distillation module, and a controller for controlling the distillation module. Both the water storage module and the distillation module are fixedly connected to the main body, and the distillation module is electrically connected to the controller. Both the distillation module and the main body are electrically connected to the power module. The water storage module has a first inlet for water injection and a first outlet for water delivery to the distillation module. The distillation module has a second inlet and a second outlet for water intake. The first outlet and the second inlet are connected, and a first valve is provided between them. Distilled water can be prepared on-site using the distillation module, eliminating the need for an external pure water source. This effectively solves the problem of pure water shortage in field operations, standardizes water quality sources, reduces measurement errors, and improves data consistency and experimental repeatability.

The invention provides a near-oil-based drilling fluid base fluid content detection method, which comprises: S1, preparing standard solutions with different near-oil-based base fluid contents, respectively diluting, titrating with a standard hydrochloric acid solution until the pH value tested by a pH meter is 2.95-3.05, recording the consumption volume, calculating the amine value according to a first formula, and forming a standard curve chart of different base fluid contents; s2, testing the initial pH value of the near-oil-based drilling fluid sample by using a pH meter, titrating to the pH value of 3.00-3.20 by using a standard hydrochloric acid solution, and titrating to the initial pH value by using a standard sodium hydroxide solution to obtain a first solution; and S3, titrating the first solution with a standard hydrochloric acid solution until the pH value is 2.95-3.05, recording the consumption volume, calculating the amine value according to a second formula, and comparing the standard curve chart to obtain the base fluid content of the near-oil-based drilling fluid. The method is convenient for field application, and can quantitatively and accurately analyze the content of the base fluid in the field near-oil-based drilling fluid.

The invention particularly relates to an online pH meter stability testing device and method, and belongs to the field of pH meter stability testing. The testing device comprises an instrument detection device which forms a testing loop and is used for testing the stability of the pH meter; the dosing device is used for injecting a reagent into the sample water in the test loop and adjusting the pH value of the sample water; the constant temperature device is used for controlling the sample water in the test loop to be at a set temperature; the data acquisition system is used for acquiring output signals of the instrument detection device, the dosing device and the constant temperature device; and controlling the instrument detection device, the dosing device and the constant temperature device to operate. The testing method is carried out by using the testing device. According to the invention, the long-term stability test of the on-line pH meter under different temperature and solution environments is realized.

This utility model discloses a pH control mechanism for a vanadium precipitation stirring tank, relating to the field of vanadium precipitation technology. It includes: a stirring container with an alkali storage tank and an acid storage tank fixedly installed on its two outer walls; the alkali storage tank includes a mounting platform fixed to the side wall of the stirring container, with connectors on both outer walls of the mounting platform; a housing is installed on one side of the mounting platform via the connectors; a level gauge is installed on one side of the housing; a top cover is installed on the top of the housing; a liquid inlet pipe is inserted into the top cover, with its tip inserted into the interior of the stirring container; an electrically controlled pump is installed inside the housing; and a liquid injection nozzle is installed on one side of the top cover. By using the alkali and acid storage tanks on both sides of the stirring container, alkali or acid can be pumped into the interior of the stirring container, achieving pH adjustment of the solution. Simultaneously, using a controller and pH meter, automatic adjustment of the solution's pH value can be achieved, further facilitating the precipitation of vanadium solution.

The utility model provides a pH meter flow cell capable of being automatically cleaned, which comprises an inlet stop valve (2) which is in fluid connection with an outlet of a to-be-measured medium storage device (14) through a first flow pipeline (1), the other end of the inlet stop valve (2) is in fluid connection with one side of the bottom of a measuring chamber (4) through a second flow pipeline (3), a pH meter probe (11) is inserted in the measuring chamber (4), and the pH meter probe (11) is connected with the inlet stop valve (2). The pH meter flow cell comprises a cleaning device, one end of the cleaning device is in fluid connection with the first flow pipeline (1), the other end of the cleaning device is arranged in the measuring cavity (4), and the cleaning device is used for spraying a medium to be measured to clean the pH meter probe (11).

The utility model relates to an automatic cleaning device for a PH meter probe. The automatic cleaning device comprises an adjustable bracket, an expansion piece, a locker, an electrode probe and a water spraying pipe, the telescopic device is connected to the adjustable support, the locking device is connected to the telescopic end of the telescopic device, the electrode probe is embedded in the locking device, one end of the electrode probe extends out of the locking device, at least two water spraying pipes are arranged on the outer side of the locking device and connected to the water pump, and the water spraying ends of the water spraying pipes directly face the electrode probe. The PH meter probe can be automatically cleaned, so that the problems of large measurement error and short service life of the PH meter probe are avoided.

The invention provides a composite solidified soil anti-permeability performance enhancing method, and belongs to the technical field of soil solidification. Through particle screening or mixing treatment, a nano silicon dioxide modified curing agent solution is prepared, and the ion concentration and the pH value are controlled through a conductivity meter and a pH meter; ultrasonic oscillation equipment is adopted to assist mixing, a moisture content-compactness response matrix is established to dynamically adjust power density, molecular dynamics simulation software is utilized to construct a soil pore structure model, an evolution process is simulated through a Monte Carlo method, and a pore connectivity index is calculated to guide compaction treatment intensity adjustment. A multi-factor accelerated aging test system is established to regularly measure the change of the permeability coefficient and construct an attenuation matrix, and when the attenuation rate exceeds a threshold value, an early warning mechanism and a reinforcing treatment program are started, so that the technical problem that a systematic process parameter regulation and control method is lacked in the solidified soil preparation process is solved.

The invention provides a secondary reverse osmosis concentrated water recovery automation device, and relates to the field of industrial water treatment concentrated water recovery and utilization. The secondary reverse osmosis concentrated water recovery automation device comprises a tank body used for collecting concentrated water, an online conductivity meter and an online pH meter, the online conductivity meter and the online pH meter are installed on the tank body, and sensor probe parts of the online conductivity meter and the online pH meter are located in the concentrated water at one end of the tank body. The drainage end of the tank body sequentially communicates with a water pipe A, a water pump, a water pipe B and a pneumatic three-way valve; according to the two-stage reverse osmosis concentrated water recovery automation device, the water collecting cylinder is temporarily stored in different cavities to avoid mixing of concentrated water with different water qualities, the PLC linkage detection instrument is used for precisely grading and dividing, high-quality concentrated water flows back to the first-stage reverse osmosis, and suboptimal concentrated water is recycled to a two-stage reverse osmosis process end, so that water resource waste caused by unified deep treatment or direct discharge of the concentrated water is greatly reduced; the overall concentrated water recovery rate is improved.

1. The name of the design product: laboratory instrument controller. 2. The use of the design product: for experimental control and operation monitoring of photometer, ph meter, multi-parameter water quality analyzer, titrator, distillation instrument, nitrogen determination instrument and other experimental instruments in the laboratory. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention belongs to the technical field of oil and gas field development, and particularly relates to a formate completion fluid decomposition speed measuring device and method. The device comprises a high-temperature and high-pressure kettle, wherein the high-temperature and high-pressure kettle is respectively provided with a pressure-resistant pH meter, a pressure sensor, a liquid inlet pipeline with a valve and a liquid discharge pipeline with a valve. The method comprises the following steps: 1) correcting; obtaining a data relationship between the temperature and the pressure P blank; (2) formate completion fluid is prepared and injected into the high-temperature and high-pressure kettle; 3) heating the high-temperature high-pressure kettle, and regularly recording the internal pressure of the high-temperature high-pressure kettle to obtain a P record; and 4) calculating the decomposition speed of the formate completion fluid based on the obtained internal pressure of the high-temperature and high-pressure kettle. According to the technical scheme, the decomposition speed of the formate completion fluid can be measured, and information is provided for performance optimization and evaluation of the formate completion fluid.

The invention discloses a lime softening treatment test system and method based on pH intelligent control. The lime softening treatment test system comprises a lime milk storage box, a test container and a waste liquid box, a first stirrer is arranged in the lime milk storage box, an outlet of the lime milk storage box is communicated with an inlet of the test container through a first metering pump, a perforated partition plate, a second stirrer and a pH meter probe are arranged in the test container, the perforated partition plate is located between the second stirrer and the pH meter probe, a discharge port of the test container is divided into three paths, and the first metering pump is connected with the first stirrer. The first path is communicated with the inlet of the waste liquid box through an alkalinity meter, the second path is communicated with the inlet of the waste liquid box through a calcium hardness monitoring meter, and the third path is communicated with the inlet of the waste liquid box through a total hardness monitoring meter.

The utility model relates to the technical field of flue gas desulfurization measuring equipment, in particular to a wet desulfurization tower external pH measuring device which comprises a detection tank, the detection tank is connected with the lower portion of a desulfurization tower through a liquid inlet pipe, a first valve is arranged on the liquid inlet pipe, a pH meter is arranged in the detection tank, a slag discharge pipe is arranged at the bottom of the detection tank, and a second valve is arranged on the slag discharge pipe. A cleaning mechanism is arranged in the detection tank and is connected with a water inlet pipe. According to the utility model, the detection tank is arranged outside the desulfurizing tower, and the pH meter probe is arranged in the tank body, so that the probe is prevented from being directly contacted with slurry with high flow velocity and high solid content in the desulfurizing tower, the erosive wear is effectively reduced, and the service life of the pH meter probe is prolonged. The cleaning mechanism is also arranged in the tank, so that the probe of the pH meter and the inner wall of the detection tank can be cleaned, surface scaling is prevented, the measurement precision is ensured, and the service life of the equipment is prolonged.

Systems and methods include scale control in oilfield produced waters. Thermodynamic data indicative of surface conditions and subterranean conditions of a subterranean region including a well is received, from probes. An acidity of a produced water stream to be disposed in the well is received from a pH meter. A supersaturation degree of the produced water stream to be disposed in the well is determined, by using the thermodynamic data. An amount of carbon dioxide to be injected in the produced water stream to neutralize a scaling risk is determined, by the one or more processors, by using the supersaturation degree and the acidity. An injection of the amount of the carbon dioxide in the produced water stream is triggered to neutralize the scaling risk.

The application discloses a rapid detection method of neutral defatting agent, acid solution is quantitatively added in a certain volume of defatting liquid, the higher the defatting agent concentration is, the more acid is consumed, that is, the higher the pH value is, and vice versa, then the measured pH value is nonlinearly polynomially fitted with the defatting agent concentration to obtain a relationship function of both, and then the defatting agent concentration in the defatting liquid on site is calculated by using the relationship function; the application adopts common laboratory equipment and vessels such as a pH meter, an adjustable pipette and a volumetric flask, does not need to use special equipment and devices, is low in cost and simple in operation; the operation process of the application is short, the requirement for the operation experience of personnel is not high, the application is easy to master, the defatting liquid concentration adjustment time is effectively shortened, the work efficiency is improved, and the problem of low accuracy of the neutral defatting agent concentration determined by the weight method and the titration method is solved.

The utility model discloses a PH meter measuring device for tail gas emission control, which comprises a detection branch pipe, one end of the detection branch pipe is communicated and connected with a circulating pipe, the other end of the detection branch pipe is communicated and connected with a tail gas absorption tower, and the heights of the two ends of the detection branch pipe are different; the device further comprises a solution bin, the solution bin comprises a detection bin and a cleaning bin, the detection bin is arranged on the detection branch pipe in a communicated mode, and the cleaning bin is fixedly arranged on the side edge of the detection bin. A PH meter probe is arranged at the position of the solution bin, the PH meter probe is installed on a support, and the support is connected with the solution bin and controls the PH meter probe to move; according to the utility model, the detection branch pipe is arranged, the higher end of the detection branch pipe is communicated and connected with the circulating pipe, and the lower end of the detection branch pipe is communicated and connected with the tail gas absorption tower, so that the detection branch pipe can be communicated and connected with the circulating pipe, liquid can conveniently flow back to the tail gas absorption tower, and waste of the liquid is avoided.

This utility model relates to the field of wastewater treatment, and more particularly to an aerobic biological calcium removal co-treatment system for papermaking wastewater, comprising: a zoned aerobic tank, a monitoring module, a PLC controller, and actuator components; the zoned aerobic tank is divided into a front-end main degradation zone and a rear-end crystal nucleus growth zone by a retaining wall; the front-end main degradation zone is equipped with several first aeration devices, and the rear-end crystal nucleus growth zone is equipped with several second aeration devices; the monitoring module includes an online calcium ion monitor and a DO sensor located in the front-end main degradation zone, and an online pH meter, a DO sensor, and an alkalinity analyzer located in the rear-end crystal nucleus growth zone; the actuator components include a NaOH dosing pump, a Na2CO3 dosing pump, and a variable frequency aeration fan; the PLC controller is connected to the monitoring module and the actuator components via signal transmission lines. The overall system solves the problem of low sedimentation efficiency caused by homogeneous aeration through a physical zoning structure, and simultaneously addresses the problem of the lack of a dedicated calcium ion monitoring structure by introducing an embedded layout of the monitoring module.