28 results about "PH meter" patented technology

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 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.

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.

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.

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.

The invention belongs to the technical field of power plant indirect cooling circulating water treatment, and relates to an automatic control device and method for the quality of indirect cooling circulating water. Comprising an intelligent control cabinet, an alkali solution tank, an acid solution tank, a mixed ion exchanger, a condenser and an indirect cooling tower aluminum heat exchanger, a conductivity meter, a pH meter and a PLC (Programmable Logic Controller) are arranged in the intelligent control cabinet; the alkali solution tank is connected with a circulating water inlet pipeline; the acid solution tank is connected with a circulating water inlet pipeline; a pH electrode is arranged on the circulating water inlet pipeline; a conductivity electrode is arranged on the circulating water outlet pipeline; the condenser inlet is connected with the circulating water outlet pipeline; the condenser outlet is connected with the circulating water inlet pipeline; the circulating water outlet pipeline is connected with an inlet of the mixed ion exchanger; an outlet of the mixed ion exchanger is connected with an inlet of the condenser. According to the invention, accurate control of the water quality pH value and conductivity of the intercooling circulating water can be realized, so that system corrosion is effectively inhibited, the service life of equipment is prolonged, and safe and economical operation of a unit is guaranteed.

This utility model discloses a microwave-coupled Fenton catalytic oxidation system for treating recalcitrant organic wastewater, belonging to the field of wastewater treatment technology. It includes a reactor tank with an inlet pipe at the bottom and an outlet pipe at the top on one side. A circulation pipe is located on the other side, connected to a hydrogen peroxide storage tank via a hydrogen peroxide pipe. A ferrous pipe is installed above the inlet pipe, connected to a ferrous storage tank. A microwave generator is mounted on the top of the reactor tank, connected to a microwave transmitting antenna, which is protected by a PP sleeve. A pH meter and a temperature sensor are installed on both sides of the microwave generator and on the top of the reactor tank. The treated wastewater is mixed with hydrogen peroxide and introduced into the reactor tank through the circulation pipe, preventing the hydrogen peroxide from being prematurely consumed by mixing with highly concentrated wastewater. The temperature sensor reading is compared with a set temperature, and a PLC controller controls the microwave generator to reduce or stop irradiation, preventing excessively high temperatures from accelerating the Fenton side reaction.

The utility model relates to a guide rail type pH meter monitoring instrument, it includes the casing and sets up the main control board in the casing, the casing includes the bottom shell for fixing on the guide rail and the surface shell of cover buckle on the bottom shell through the card slot buckle mechanism, the main control board is fixedly installed with the control panel and the terminal module, be equipped with the guide rail card slot on the bottom shell, the main control board is fixedly installed on the bottom shell, the surface shell top has the central groove for exposing the control panel, and the wiring slot for exposing the terminal module is opened below the surface shell. This guide rail type pH meter monitoring instrument will indicate operation panel and wiring terminal with modularization form integrated fixed on the main control board, fix on the bottom shell together, and the surface shell is only used for covering the remaining position, not only convenient for maintenance and maintenance dismounting, and convenient for with external equipment wiring, and it has pH, temperature measurement, current, digital signal output etc. many items of expansion function and output form, can realize remote control and data monitoring through external connection equipment.

The utility model relates to an ammonium nitrate solution sampling equipment, it includes: density measurement unit, sampling unit, the sampling unit includes the sampling jar, the liquid inlet pipe that one end communicates with the lower part of sampling jar and another end communicates with the connecting pipe and the overflow pipe that one end communicates with the upper part of sampling jar and another end communicates with the connecting pipe, install first electric control ball valve on the liquid inlet pipe, the liquid preparation unit, the liquid preparation unit includes the high tank, the water inlet pipe that one end communicates with the lower part of high tank, the overflow pipe that one end communicates with the upper part of high tank and another end communicates with the water inlet pipe and install first liquid level meter in the high tank, install third electric control ball valve on the water inlet pipe, install fourth electric control ball valve on the overflow pipe, the proportioning unit is installed with second liquid level meter, second thermometer and pH meter, so can realize the continuous measurement to density, and can measure the pH value of the solution after proportioning.

This invention provides a VOCs-containing acid mist absorption system, comprising an absorption tower, an acid mist adsorption device connected to the absorption tower, a fan connected to the acid mist adsorption device, and an alkali tank connected to the absorption tower via an alkali replenishment pump. A circulation pump and a sewage pump are respectively connected to the side of the absorption tower. A level gauge, a second pressure monitoring gauge, and a pH meter are installed inside the absorption tower. The circulation pump is connected to a dynamic wave regulating valve and a spray regulating valve. A first pressure monitoring gauge is installed on the pipeline between the dynamic wave regulating valve and the absorption tower. An acid mist pipeline is provided at the inlet of the absorption tower. This invention absorbs and discharges VOCs-containing acid mist from the extraction system in a compliant manner through primary dynamic wave absorption, primary packing absorption, and primary activated carbon absorption, ensuring a clean working environment in the extraction production system.

This utility model discloses a liquid alkali addition control mechanism, relating to the field of glycerol distillation equipment technology. It includes: a distillation tank and a tank cover installed on top of the tank. A mixing mechanism for agitating glycerol is provided below the tank cover to neutralize acids in the glycerol with liquid alkali. A liquid alkali storage component, a liquid alkali addition mechanism, and a pH meter are installed on the upper surface of the tank cover. The liquid alkali addition mechanism and the liquid alkali storage component are connected. Through the cooperation between the liquid alkali addition mechanism, the liquid alkali storage component, the pH meter, and the controller, an electric push rod drives a piston upwards, allowing liquid alkali to enter the suction cylinder through the inlet pipe. Under the action of the piston pushed by the electric push rod, the liquid alkali is quantitatively added through the outlet pipe. Simultaneously, combined with real-time monitoring by the pH meter, automated and precise control of liquid alkali addition is achieved, effectively improving the neutralization efficiency and quality of acids in the glycerol.

This invention relates to a dynamic pH electrode measurement simulation experimental device, belonging to the category of water quality chemical analysis instruments for power plants. It includes a back pressure overflow cup, a pH meter, a pH electrode, a metal electrode cup for a standard pH electrode, a metal electrode cup for the pH electrode under test, a non-metallic electrode cup for the pH electrode under test, a needle valve, a three-way discharge valve, a device control unit, an ammonia-adding peristaltic pump, an electronic flow meter, a three-way valve, a variable-speed circulating pump, a cation exchange column, a diluted ammonia storage bottle, a test solution circulating water tank, a vacuum degassing module, a 5µm filter, a heat exchanger, a vacuum pump, a low-temperature water bath, and a level gauge. Its advantages include simulating the working conditions of pH measurement in power plants, rapidly detecting the performance of the pH electrode under test, providing a basis for judging the condition of power plant maintenance, reducing maintenance costs, and allowing the detected temperature compensation curve to be directly used to correct online meters. It is a fundamental guarantee for the safe and stable operation of power plant units and can bring direct economic benefits.

The utility model provides an oxygen conveying ultrasonic wave high -efficient leaching control system. Include: oxidation reaction groove, pump unit, valve group, including oxygen valve and steam valve, flowmeter group, pH meter, stirring motor, liquid level meter all are established on oxidation reaction groove, thermometer, be established on oxidation reaction groove, be used for monitoring the temperature of solution in oxidation reaction groove, pressure gauge, be established on high -efficient oxidation generator, be used for monitoring the pressure in high -efficient oxidation generator, central controller is connected with pump unit, valve group, flowmeter group, stirring motor, pH meter, liquid level meter, thermometer and pressure gauge electricity. Utilize above -mentioned system can realize the automatic regulation and control of oxidation reaction groove's feeding state and high -efficient oxidation generator oxygen intake's automatic regulation and control, convenient to the leaching process monitoring, debugging, alarm, stabilize simultaneously feeding, the accurate control of oxidation reaction groove's pH value and temperature value, high -efficient oxidation generator oxygen intake's accurate control and pressure monitoring.

The present disclosure provides a water quality pH detection method, water treatment equipment, and a storage medium. The method acquires a first dissolved substance content value upstream of an alkaline filter material and a second dissolved substance content value downstream of the alkaline filter material in the water treatment equipment, providing a direct basis for subsequent pH value calculations. Based on the first and the second dissolved substance content values, a target difference value in dissolved substance content is calculated. A pH value of water is calculated and obtained based on the calculated target difference value in dissolved substance content, improving an accuracy of water quality detection. The present disclosure avoids a use of expensive pH meters and reduces a cost of water quality detection.

The utility model discloses a cold plate system cooling medium purification device can carry out circulating purification to the cooling medium in cold plate system, and the problem of turbidity, PH value and conductivity parameter of cooling medium of faster improvement does not reach the standard, and good use flexibility can significantly reduce the overall cost. In the application, including water inlet main pipe, water inlet monitoring pipe, water inlet observation pipe, reagent pipe, dosing tank, mixing tank and water outlet main pipe, the turbidimeter, the pH meter and the conductivity meter are equipped on the water inlet monitoring pipe, the observation front valve, the observation branch pipe and the observation rear valve are equipped on the water inlet observation straight pipe section, one end of the observation branch pipe is communicated with the water inlet observation pipe, the other end of the observation branch pipe is equipped with the hanging piece screw cover, the observation hanging piece is equipped on the hanging piece screw cover, the drift pole is equipped in the water inlet observation straight pipe section, the upper end of the drift pole is hinged with the observation hanging piece, two limit vertical pieces are equipped in the water inlet observation straight pipe section, the mixing tank is communicated with the water outlet main pipe, the water outlet on-off valve is equipped on the water outlet main pipe, and the dosing pump is equipped on the reagent pipe.

The utility model relates to a glyphosate continuous crystallization device, wherein the primary static mixer and the secondary static mixer are same in structure, the upper end is all external with lye pipeline, and is equipped with glyphosate desolventizing solution feeding pipe and discharge pipe a respectively at both ends of the primary static mixer, is equipped with intermediate feeding pipe and discharge pipe b respectively at both ends of the secondary static mixer, the upper end of the primary crystallization kettle is communicated with the discharge pipe a through injection pipe a, the lower end is communicated with the intermediate feeding pipe through discharge pipe a, the outer wall of the primary crystallization kettle is equipped with interlayer, is installed with liquid level meter at side end, the both sides of upper surface are equipped with on -line thermometer, on -line ph meter and radar liquid level instrument in proper order, the intermediate position of upper surface is vertically rotatory and is equipped with stirring shaft, the upper end of stirring shaft is connected with stirring motor, and the lower end is connected with stirring paddle, the secondary crystallization kettle is same in structure with the primary crystallization kettle, the upper end is communicated with the discharge pipe b through injection pipe b, and the lower end is equipped with discharge pipe b, the utility model has the advantages of convenient operation and good production use effect.

The invention provides chemical plating equipment and a using method thereof. The chemical plating equipment comprises a solution tank and a device for detecting the PH value. The device for detecting the PH value comprises a container, a PH meter, a first liquid inlet pipe, a liquid outlet pipe, a first valve and a water pump. The container is provided with a cavity, a first liquid inlet and a first liquid outlet, wherein the first liquid inlet and the first liquid outlet are communicated with the cavity. The cavity is used for containing liquid to be detected and a PH meter, and at least part of the PH meter is located in the cavity. The first liquid inlet pipe comprises an inlet and an outlet, and the outlet of the first liquid inlet pipe is communicated with the first liquid inlet. The liquid outlet pipe comprises an inlet and an outlet, and the inlet of the liquid outlet pipe is communicated with the first liquid outlet. And the first valve is arranged on the first liquid inlet pipe. And the water pump is arranged on the first liquid inlet pipe. The solution tank is provided with a containing cavity and a second liquid outlet communicated with the containing cavity, and an inlet of the first liquid inlet pipe is communicated with the second liquid outlet.

This invention relates to a control system for neutralizing non-condensable gases from waste tire pyrolysis, comprising a neutralization reaction unit, a storage and execution unit, a detection unit, and a control unit. The neutralization reaction unit is a packed-bed scrubbing tower, with an inlet pipe and an outlet pipe at the bottom and a delivery pipe and an outlet pipe at the top. The storage and execution unit includes a neutralizing agent storage tank and a precision metering pump. The neutralizing agent storage tank stores neutralizing agent and is connected to the precision metering pump, which is connected to the delivery pipe. The outlet pipe is connected to the neutralizing agent storage tank. The detection unit includes an online pH meter installed on the delivery pipe between the outlet pipe and the neutralizing agent storage tank. The control unit is a PLC controller used to control and adjust the neutralizing agent dosage. This system can achieve efficient removal of acidic pollutants and ensure compliant emissions, avoiding waste and secondary pollution caused by excessive use of neutralizing agents.

This utility model discloses a treatment system for recovering industrial-grade sodium chromate from chromium-containing electroplating wastewater. The system is sequentially connected to a pretreatment system, an ion exchange system, an evaporation and concentration system, a purification system, and an evaporation and crystallization system. The pretreatment system removes suspended solids. The ion exchange system contains at least four ion exchange columns and an eluent tank; the coordinated operation of multiple columns ensures sufficient adsorption and elution of chromium, increasing the concentration of hexavalent chromium in the eluent, reducing the load on subsequent evaporation equipment, and shortening processing time. The evaporation and concentration system uses an MVR evaporator and integrates an online density meter. The purification system is equipped with a purification reaction vessel with a detachable pH meter probe, which can quantitatively remove sulfate, reducing the difficulty of salt separation and crystallization, increasing the number of mother liquor circulations, and thus improving the chromium recovery rate. The feed to the eluent tank allows for reasonable adjustment of the alkali dosage according to different concentrations of components, avoiding waste and reducing costs. The detachable pH meter probe facilitates maintenance, ensures accurate monitoring, and improves the stability of sulfate removal rate and the quality of sodium chromate products.

The utility model provides a laboratory can vacuum temperature control timing four -in -one feed fermentation tank relates to biological fermentation equipment technical field, include: four -in -one tank body unit, inside reaction observation, stirring device, temperature control module, pH meter, air filter, pressure gauge, automatic cleaning device, four -in -one tank body unit is by four independent fermentation tank transverse parallel composition, every tank body side wall is equipped with high temperature resistant toughened glass transparent observation window, can real -time observation fermentation state, tank body bottom configuration rotary stirrer, realizes sample even mixing through motor drive, the pH meter passes through precision electrode real -time monitoring acid -base degree change, air filter is connected with exhaust valve, harmful gas is doubly filtered, automatic cleaning device realizes residue separation and tank body cleaning through high pressure water flow and concave filter screen, the utility model discloses through modularization design, multi -parameter automation control and safety protection mechanism, especially applicable to laboratory multivariable control experiment and small -size enterprise accurate fermentation demand.

This utility model discloses a pH adjustment and treatment system for arsenic-containing wastewater, including an adjustment tank and a storage tank connected to the top of the adjustment tank by a drug inlet pipe. An inlet pipe and an outlet pipe are connected to the top of one side and the other side of the adjustment tank, respectively. A detection tube arranged in an inverted L-shape is installed inside the adjustment tank. The horizontal section of the detection tube, away from the vertical section, is connected to the inlet pipe. An outlet is located at the bottom of the vertical section. One side of the vertical section is fitted to the inner wall of the other side of the adjustment tank. A front pH meter with a probe inserted into the vertical section of the detection tube is detachably connected to the adjustment tank. A middle pH meter and a rear pH meter with probes located inside the adjustment tank and separated by a second filter screen are detachably connected sequentially at the top and rear of the adjustment tank. The middle pH meter is covered by a cleaning component and a bottom cover. A lifting mechanism for driving the cleaning component to rise and fall is installed on the top of the adjustment tank. An opening for the first filter screen is located at the top of the bottom cover. The system offers high overall adjustment accuracy, long probe lifespan, and easy probe disassembly, replacement, and cleaning.

This invention relates to the field of waste gas treatment technology. It discloses an ammonia post-treatment device based on multi-channel injection and pH feedback regulation, comprising a main water tank, multiple microporous slow-release tubes located at the bottom of the main water tank, a secondary water-sealed tank inverted above the liquid surface, an online pH meter, an acid storage tank, a micro-acid dosing pump, a temperature sensor, and an electronic control unit. Ammonia gas is dispersed into microbubbles through the microporous slow-release tubes for primary absorption. Unabsorbed vapors are intercepted and condensed by the secondary water seal. Based on feedback signals from the pH and temperature sensors, the electronic control unit automatically controls the micro-acid dosing pump to replenish dilute acid, stabilizing the pH of the absorbent liquid within the neutral to slightly acidic range, and enhancing evaporation suppression when the temperature is too high. This invention, through a combination of physical suppression and chemical regulation, achieves automated treatment of fluctuating ammonia emissions in the laboratory, completely solving the technical problems of efficiency decay and secondary emission in traditional water absorption methods, and significantly improving laboratory safety and environmental friendliness.

The utility model discloses an acid leaching impurity removal device for zirconium oxide processing, which belongs to the technical field of zirconium oxide production equipment and structurally comprises a reaction unit, a diluted hydrochloric acid feeding unit, a diluted ammonia water feeding unit and a control system. According to the utility model, the online thermometer and the online pH meter on the reaction kettle are used for monitoring in real time and feeding data back to the control system, so that the temperature and the pH value are accurately controlled, the reaction conditions are ensured to be stable, zirconium ions are prevented from being hydrolyzed in advance or ferric ions are prevented from being precipitated incompletely, and meanwhile, the reaction temperature is reduced. The diluted hydrochloric acid and diluted ammonia water feeding unit is electrically connected with the control system, the feeding amount can be accurately controlled, the stirring speed of the stirring assembly is controlled by the control system, so that solutions are fully mixed, and the device is simple and convenient to operate, high in automation degree, easy to maintain and capable of improving the production efficiency and ensuring the purity and the quality of final zirconium oxide products.

The utility model relates to pH meter technical field, and disclose an integrated electrode cleaning structure of pH meter. This integrated electrode cleaning structure, include: main part, be located the container of main part back, the water that container inside holds is used to carry out the cleaning to the electrode on probe, main part top fixed connection line one end, line other end fixed connection probe top, the main part back is connected through fastener position block, simultaneously elastic piece stretches, then rotates the container, and the container drives the rotation block to rotate on the position block, until new container moves to the position frame below, loosens the position frame, through the resilience of elastic piece, and the elastic piece is through telescopic column and is pulled position frame and is clamped in the container outer wall again, and the container is positioned, can clean the probe electrode after using again, need not to carry and use separate container and clear water, simple and quick.

The present invention relates to an apparatus and method for measuring the concentration of ammonia gas in boiler flue gas using a DTW algorithm and a pH meter capable of determining the presence or absence of ammonia leakage and the increase or decrease in concentration, comprising: an enclosure having an exhaust gas inlet formed on one side and an exhaust gas outlet formed on the other side; a water spray nozzle installed on one side of the upper portion of the enclosure to spray water onto the exhaust gas passing through the interior of the enclosure to generate an aqueous solution; and a measuring sensor installed on one side of the lower portion of the enclosure to measure the pH of the generated aqueous solution collected at the bottom of the enclosure, and further comprising the steps of: acquiring SOx time series data, NOx time series data, and pH time series data from the measuring sensor (130) that measures the pH of the aqueous solution generated by mixing exhaust gas and water; acquiring each time series data at 5-second intervals and calculating the average value of the time series data; and normalizing the minimum-maximum of the unit for each time series data. The method includes a step of calculating the DTW distance between SOx time series data and pH time series data, and between NOx time series data and pH time series data after the normalization process; and a step of determining the concentration by summing the distances calculated in the step of calculating the DTW distance and comparing the pH time series data value with the SOx time series data value and the NOx time series data value.

The application discloses a preparation process of an EGFET-based pH sensor and belongs to the fields of electrochemistry and semiconductor physics, and comprises the following steps: EGFET conductive substrate preparation, pH sensitive film preparation, pH sensitive particle preparation and EGFET device lead packaging. A high-cost-performance Ti nano layer is used as a lower electrode conductive layer of the EGFET, and a Ta target or a Ta2O5 target is used to prepare a Ta2O5 sensitive film material. The preparation process of the EGFET-based pH sensor overcomes the defects of a traditional pH meter, such as long response time, poor long-term stability, use of fragile glass products and dependence on liquid. Meanwhile, the technical problem that the product performance stability and the preparation cost are difficult to balance in the preparation process of a traditional sensor is solved.

This application relates to the field of groundwater monitoring, and in particular to a multi-parameter groundwater depth determination device. The device includes an integrated template on which a water level gauge, a thermometer, a conductivity meter, a pH meter, and a GPS positioning device are respectively installed. These components are modularly integrated into the template. A main control unit is mounted on the template, and the main control unit is connected to the water level gauge, thermometer, conductivity meter, pH meter, and GPS positioning device via a corresponding data transmission bus. A cable encoder and a depth-determining float are also installed on the template, and the float is lowered via a guide rod. The purpose of this application is to provide effective support for practical production work such as groundwater pollution prevention and control and ecological restoration.

The present application belongs to sewage treatment technical field, especially, relate to a kind of tunnel wall maintenance sewage treatment device, including treatment pond, still including: automatic dosing mechanism, sewage pH detection mechanism, synchronous quick mixing mechanism, correction mechanism, correction frequency control mechanism, follow-up detection feedback control mechanism.The present application is added by gradually changing neutralizing agent adding mode, fast in early stage and slow in later stage, can smoothly promote neutralization reaction, real-time monitoring and process control are convenient, ensure that pH value is accurately close to target value, avoid excessive or insufficient reagent;It can automatically control the initial addition speed of reagent according to the initial pH value of sewage, improve the reaction efficiency;Synchronous auxiliary stirring when adding reagent, and automatically adjust stirring power according to addition speed, ensure uniform and efficient reaction, prevent excessive stirring from affecting subsequent treatment;pH meter can also be automatically calibrated at intervals, and dynamically adjust the correction frequency according to the basicity of sewage, ensure that measurement result is accurate and reliable.