81 results about "Ph monitoring" patented technology

A method and system that provides for minute-to-minute EBC pH monitoring (or for other EBC characteristic monitoring) of a subject that greatly assists in determining the time-course of airway pH changes (or other characteristic changes) in evolving disease processes, and may assist in determining the predictive ability of these tests, as well as determining response to therapy.

A capsule containing sensors for impedance and pH monitoring with wireless communication capabilities is presented. A low cost miniature microcontroller interfaces between the sensors and a wireless transmitter. Magnetic holding is proposed as an alternative to surgical affixation of the monitoring capsule. Pins provide additional support for the capsule. The capsule may be used to detect acid and non-acid reflux.

The invention discloses a microwave electric soil in-situ restoration device and a restoration method, and belongs to the technical field of in-situ restoration for soil pollutions. The device consists of an electrode system, a microwave heating system and an underground water circulation system and comprises a negative electrode well (1) and the like, wherein a negative electrode (3) is arranged in the negative electrode well (1). A microwave absorption material is buried into the soil; a closed gas collection shed is constructed; a pH monitoring device and a temperature sensor are arranged in the closed gas collection shed; part of organic pollutants and heavy metals in the soil are treated; underground water is pumped out and then injected into the soil to increase the migration speed of live particles and accelerate the soil heating process; volatile organic compounds are recycled; distilled water is injected into the underground water; non-volatile and non-degradable organic pollutants and residual heavy metals are treated by a high-temperature microwave soil thermal restoration technology. The technical equipment is compact in structure, easy to operate and high in reliability and has high popularization potential home and abroad and in particular has a wide application prospect to composite soil pollutions with the heavy metals and the organic compounds.

System and method for detecting and measuring chemical perturbations in a sample. The system and method are useful for non-invasive pH monitoring of blood or blood products sealed in storage bags.

In general, the invention is directed to systems and methods for monitoring the gastrointestinal system of a patient. In one embodiment, the invention includes techniques for monitoring the emptying of the patient's stomach. The techniques may employ glucose monitoring, pH monitoring with a consumable sensor, of monitoring the position of a consumable sensor as it exits the stomach. Consumable sensors may be employed to sense conditions, such as temperature or bile concentration, in other segments of the gastrointestinal system. The invention also includes systems for tracking the position of one or more consumable sensors as the sensors transit the gastrointestinal system, and monitoring the conditions sensed by the sensors.

The invention discloses a control method and device for deep denitrification treatment of garbage leachate by combination of short-range nitrification and anaerobic ammoxidation, relating to the field of biological sewage treatment. The invention can solve the problem of difficulty in deep denitrification of garbage leachate. Denitrification reaction and organic substance removal are carried out in a first SBR (sequencing batch reactor), and the process is controlled by real-time ORP and pH monitoring. 60% of effluent water of the first SBR directly enters a second SBR to be subjected to short-range nitrification which is controlled by real-time DO and pH monitoring. 40% of effluent water of the first SBR and effluent water of the second SBR are mixed and enter an ASBR (anaerobic sequencing batch reactor) in a continuous water inlet mode to be subjected to anaerobic ammoxidation, and the process is controlled by real-time pH monitoring. After draining, 70% of effluent water flows back to an influent water tank, and the rest of effluent water is discharged for the next cycle. The invention can accurately control the denitrification mixing time as well as organic substance removal and short-range nitrification aeration time, and has the advantages of energy consumption saving, shorter reaction time, no need of external carbon source, high TN removal rate and the like.

The invention belongs to the technical field of separation of domestic sewage sources and relates to a chemical method for urine treatment and recovery of nutrient elements, in particular to a method for recovering nitrogen and phosphorous from urine. The method comprises the following steps of: collecting fresh urine and then naturally covering and storing, and recovering nitrogen and phosphorus after the pH reaches above 9, wherein the pH can raise to 9 after the urine is stored for about 10 days according to the difference of seasons and environment temperatures, and the pH monitoring is subjected to the storage process; sampling and detecting the NH4+-N concentration and the PO43--P concentration, feeding Na2HPO4 and MgCl2 according to mol ratio of n(Mg): n(P): n(N) of 1.3: 1: 1, controlling the stirring speed of 100r / min and the reaction time of 10min, precipitating for 1h and then separating supernate to obtain the MAP (Magnesium Ammonium Phosphate) precipitate. In the invention, the phosphate and magnesium salts are fed according to certain mol ratio in accordance with the NH4<+>-N concentration and the PO4<3->-P concentration after the urine is hydrolyzed, the nitrogen and the phosphorus are furthest recovered in an MAP precipitate way by reasonably controlling reaction conditions so that the nitrogen and phosphorus contents are greatly reduced, and the recovery rate of the nitrogen and the phosphorus can reach up to about 95 percent.

An integrated bioreactor and its applications as well as a method for treatment of highly-concentrated organic wastewater using the same. The integrated bioreactor with a concentric columnar structure includes an inner layer and an outer layer, in which the inner layer is an upflow anaerobic sludge blanket (UASB) and the outer layer is a moving bed biofilm reactor (MBBR). The effluent of the MBBR is recycled into UASB via a reflux pump mounted between a water tank and the integrated bioreactor. A water outlet of the UASB is arranged with an on-line pH monitor and a mechanical agitation device is arranged on the top of a bottom water distributor. The bioreactor is low in cost, features friendly maintenance, stable operation, and high degree of automation, and can be applied under low temperature.

The invention provides a method and a device for controlling a biological treatment process of early landfill leachate, belonging to the technical field of biochemical-process sewage treatment. An ASBR (Anaerobic Sequencing Batch Reactor) is used for accurately judging an anaerobic digestion end point through real-time pH monitoring; original leachate for adjusting COD (Chemical Oxygen Demand) / NH4<+>-N to be 3-4 as inflow water of pulse SBR (Sequencing Batch Reactor) is added in an intermediate water tank; according to the pulse SBR, due to the operation mode of combining three-time equivalent water-feeding with intermittent stirring and aeration, a carbon source in raw water and a carbon source in sludge are fully utilized; during aerobic denitrification, the aeration time is controlled through real-time monitoring of DO (Dissolved Oxygen), pH and ORP (Oxidation Reduction Potential); and during denitrification, the stirring time is controlled through real-time monitoring of pH and ORP. According to the method and the device for controlling the biological treatment process of the early landfill leachate, provided by the invention, the time of aerobic digestion, the stirring time of anoxic denitrification and the aeration time of aerobic denitrification can be accurately controlled; and the method and device have the advantages of reduced energy consumption, shortened reaction time, no addition of external carbon source, high TN (Total Nitrogen) removal rate, reduced sludge and the like.

The invention provides a method for predicating pH change on the basis of a neural network model to realize SBR short-cut nitrification and belongs to the field of waste water treatment methods. In an SBR system, the aeration time is controlled by using a real-time control strategy; with long-time stably operating SBR data as basic data, a three-layer BP neural network prediction model is established to predicate a pH change curve in advance; according to a predicated pH change point, an aeration stopping time is set in advance to prevent further oxidation of NO2-N. The method for predicating pH change on the basis of the neural network model to realize SBR short-cut nitrification comprises the specific steps: data collection: collecting data through an online instrument; data selection processing: carrying out selection preprocessing on the data collected in the first step, selecting enough continuously stable samples from the data and using pH as a variable parameter; model establishment: modeling the selected data, selecting the BP neural network prediction model for training, correction and testing, and carrying out process sensor pH monitoring and online pH predication on the BP neural network prediction model after the BP neural network prediction model satisfies accuracy requirements.

A variable-diameter biological drip-filter device for gas processing belongs to the technical field of gas processing devices. A gas inlet pipe, a draught fan inlet air valve, an induced draught fan, a draught fan outlet air valve and a biological filter tower gas inlet are connected successively, the biological filter tower gas inlet is located at one side of a bottom gas inlet chamber of a reactor body biological filtration tower, a water replenishing pipe matches a water replenishing electromagnetic valve, a water drain pipe matches a water drain electromagnetic valve, the water replenishing electromagnetic valve and the water drain electromagnetic valve are respectively connected with a liquid storage tank, the liquid storage tank is located below the gas inlet chamber, a filling area and a gas outlet chamber are successively arranged above the gas inlet chamber, a spray water pipe is arranged in the gas outlet chamber, the upper end of the gas outlet chamber is also connected with a gas outlet pipe; a temperature sensor, a liquid level meter and a pH monitor are arranged in the liquid storage tank, the liquid storage tank is connected with the spray water pipe successively by a butterfly valve, a circulating water pump, a pipe filter, a stop valve and a water pressure gauge through a circulating water pipe; the circulating water pump is controlled by a spray water electromagnetic valve. The variable-diameter biological drip-filter device can save a filler, and make full use of the filler.

The invention discloses an antibiotic wastewater deep treatment device which comprises a coagulation and precipitation device, a regulating pool, a Fenton reaction device, a resin reaction pool and a resin precipitation and separation pool, wherein a flocculating agent and coagulant aid storage and feeding device is attached to the coagulation and precipitation device; and a pH regulating device and a pH monitoring device are attached to the regulating pool. The invention also discloses an antibiotic wastewater treatment method which comprises the following steps of: leading antibiotic wastewater to be treated into the coagulation and precipitation pool, and throwing a flocculating agent and a coagulating agent into the coagulation and precipitation pool; performing static precipitation, yielding water after water quality is stabilized, and leading the water into the regulating pool; regulating the pH value of the antibiotic wastewater to 2.5-3.5; leading the water out of the regulating pool into the resin reaction pool through the Fenton reaction device, and adopting 100-150 times of resin treatment amount in the resin reaction pool, wherein the hydraulic retention time is 15-20 min; and entering the resin precipitation and separation pool, and draining water. Each part of the device operates independently, and the device is simple and convenient to operate and easy to control and regulate.

The invention provides a pH monitoring flat panel optrode fluorescence sensing film, as well as a preparation method and application thereof, and belongs to the field of monitoring of pH value two-dimensional distribution. The fluorescence sensing film is prepared from a fluorescent dye HPTS-lipo. In the preparation process, HPTS-lipo is embedded in a hydrogel D4. The fluorescent dye HPTS-lipo isprepared in such a way that a sulfonic acid group of the fluorescent dye HPTS-lipo is introduced in alkylamine. Based on modified fluorescent dye HPTS-lipo, and compared with a fluorescent dye HPTS, the pKA value is obviously increased, the fluorescence sensing film is suitable for monitoring different pH values, different experimental requirements are met, the fluorescent dye HPTS-lipo has higherhydrophobicity, and is kept for a longer time in an environment, and after embedding by the hydrogel D4, the problem of dye leakage is further solved.

The invention relates to a desulfurization waste water softening treatment device and method and belongs to the field of environmental water treatment in flue gas desulphurization systems. The desulfurization waste water softening treatment device comprises a waste water primary softening pond, a settling pond A, a waste water aeration softening pond, a settling pond B, a closed type flue gas aeration cooling pond and a cooling flue gas gas-water separator. A stirring device and an online pH monitoring instrument A are arranged inside the waste water primary softening pond. An aeration device B is arranged at the bottom inside the closed type flue gas aeration cooling pond. The invention further relates to a desulfurization waste water softening treatment method. By means of the device and method, the method of adjusting the desulfurization waste water pH value through hydrochloric acid in the traditional desulfurization waste water treatment technology is replaced with the method of achieving neutralization through CO2 in flue gas, the equipment cost of the system is reduced, and system safety is improved.

The invention relates to the technical field of cyanide-containing wastewater treatment, in particular to a cyanide-containing wastewater treatment control system and control method.The system comprises a cyanide-containing wastewater feeding device, a sodium hydroxide dosing device, a sodium hypochlorite dosing device and three cyanide breaking reaction pools, and the cyanide-containing wastewater feeding device, the sodium hydroxide dosing device and the sodium hypochlorite dosing device are connected with the cyanide breaking reaction pools respectively.The treatment stages of the cyanide breaking reaction pools are sequentially staggered for wastewater treatment in turns to enable wastewater treatment to form a continuous cycle, therefore, wastewater treatment of each cyanide breaking reaction pool is performed intermittently in turns, the whole wastewater treatment process is continuously cycled, and the wastewater treatment efficiency is greatly improved; in addition, the agentia is dosed in a rough adjusting mode and then automatically dosed in a fine adjusting mode in the dosing process, and therefore the problem that the dosing quantity is inaccurate due to the fact that the agentia is dissolved in a lagging mode is solved; in the whole wastewater treatment process, a PLC control system performs whole-process pH monitoring and interlocking according to detection signals of a pH probe, and cyanide is effectively prevented from overflowing.

The invention discloses a method and device for deep denitrification and dephosphorization of mixed wastewater of landfill leachate and sanitary sewage, and relates to the field of sewage biological treatment.Denitrification and dephosphorization reaction and organic matter removal are conducted in a sequencing batch reactor (SBR), during which ORP and pH are monitored and controlled in real time and phosphorus is removed through mud discharge, wherein 55-60% of output water of the SBR directly enters a BAF reactor to be subjected to short-cut nitrification, 40-45% of output water of the SBR and output water of the BAF reactor are mixed and then enter a UASB reactor to be subjected to anaerobic ammonia oxidation reaction, 50-55% of output water flows back into a third middle water tank after water discharge, and the rest of output water is discharged.By mixing landfill leachate and urban sanitary sewage, the problem that urban sanitary sewage cannot be stably subjected to short-cut nitrification due to low ammonia nitrogen concentration can be solved.Meanwhile, the carbon source in sanitary sewage is used for dual purposes in the SBR, phosphorus in sewage and nitrate nitrogen in backflow output water of the UASB reactor are both removed through the effect of denitrifying phosphorus removal, and the organic matter degradation aim is achieved.

Examples of techniques for monitoring and controlling the pH of a drilling fluid are disclosed. In one example implementation, a system may include a first sensor to sense a first pH-value and an associated first temperature of the drilling fluid prior to being heated by a drilling fluid heater and a second sensor to sense a second pH-value and an associated second temperature of the drilling fluid subsequent to being heated by the drilling fluid heater. The system may also include a controller comprising a memory having computer readable instructions and a processing device for executing the computer readable instructions. The computer readable instructions include receiving the first pH-value and first temperature from the first sensor, receiving the second pH-value and second temperature from the second sensor, and determining an amount of additive to add to the drilling fluid to maintain a desired pH-value at the second temperature.

A remote monitoring system for pH value of remote industrial wastewater on the basis of LoRa technology. The system includes a pH monitoring terminal, of which an output end is connected to the input end of a LoRa base station through a LoRa wireless network; the output end of the LoRa base station is bidirectionally connected to the input end of a gateway; the output end of the gateway is bidirectionally connected to the input end of a network transmission module; the output end of the network transmission module is bidirectionally connected to the input end to a cloud server through the Internet; the output end of the cloud server is bidirectionally connected to the input end of an application terminal through the Internet. During use, the pH monitoring terminal is located at a monitoring point to monitor the pH value of industrial wastewater in real time and sends the pH value to the LoRa base station; the LoRa base station sends the pH value to the cloud server through the gateway; a user accesses the cloud server through the user application terminal. The remote monitoring system reduces work load of maintenance workers, is intelligent and is networked.

The invention relates to a combined tubular high-pressure seepage leaching test device. The device comprises a high-pressure storage tank, one or more combined tubular reactors are arranged in the high-pressure storage tank, every combined tubular reactor is filled with leaching ores, every combined tubular reactor is formed by splicing and assembling a plurality of tubular body units, a monitoring section is formed at every joint of the tubular body units, pH sensors are arranged in the tube body of a short filter unit on the pH monitoring section, OPR sensors are arranged in the tube body ofa short filter unit on the OPR monitoring section, pressure sensors are arranged in the tube body of a short filter unit on the pressure monitoring section, dissolved oxygen sensors are arranged in the tube body of a short filter unit on the dissolved oxygen monitoring section, and temperature sensors are arranged in the tube body of a short filter unit on the temperature monitoring section. Thedevice can be used to carry out the uranium ore leaching process test of a liquid-solid two-phase reaction under a one-dimensional flow seepage condition and the uranium ore leaching process test of ahigh-pressure (CO2 + O2)-liquid-solid three-phase reaction under a one-dimensional flow seepage condition.

The invention discloses a fuel coal desulfurization slurry pH detection device which comprises a branch pipe, a three-way valve, a liquid-collecting bag, a circulating tank, a pH monitoring system and a backflow pipe. The inlet end of the branch pipe is connected with desulfurization slurry, the outlet end of the branch pipe is connected with a first inlet of the three-way valve through a control valve, a second inlet of the three-way valve is connected with a cleaning pipe with a valve, and an outlet of the three-way valve is connected with the lower end of the liquid-collecting bag through a pressure reducing valve. The upper portion of the liquid-collecting bag is provided with a slurry outlet and connected with an inlet of the circulating tank, the lower portion of the liquid-collecting bag is provided with a sewage discharging port and connected with the backflow pipe, and an outlet of the circulating tank is connected with the inlet end of the backflow pipe. The pH monitoring system comprises a pH electrode which is arranged in the circulating tank. The fuel coal desulfurization slurry pH detection device can detect the pH of desulfurization slurry and can also perform automatic cleaning work on the pH electrode. The fuel coal desulfurization slurry pH detection device has the advantages of accuracy in pH detection, high sensitivity, convenience in cleaning and simple structure and is stable and long in service life.

Respiratory diseases related to gastroesophageal reflux disease in a patient are diagnosed by detecting esophageal or pharyngeal impedance and pH in the patient, detecting oxygen saturation in the patient, and diagnosing the respiratory diseases from the esophageal or pharyngeal impedance, the pH, and the oxygen saturation.

An intelligent slurry pipe abrasion monitoring system for a slurry balance shield can monitor the state of a slurry pipe in a shield construction process, and therefore abrasion of a pipe wall can bereduced. A pH monitoring device, a pH value blending device, a flow velocity control device, a flow monitoring device and a wall thickness monitoring device are all in signal connection with a data acquisition and processing system; the following actions are executed: when slurry enters the slurry pipe, the pH value of the slurry is measured by the pH monitoring device; if the data acquisition andprocessing system judges that the pH value is not in a reasonable range, the pH neutralizing device is instructed to perform blending; the flow monitoring device is arranged on the downstream side ofthe flow velocity control device and monitors the flow of the slurry pipe and reversely deduces the flow velocity of slurry in the slurry pipe; the data acquisition and processing system judges the change of the flow velocity and instructs the flow velocity control device to adjust the flow velocity of the slurry. The wall thickness monitoring device is used for monitoring the wall thickness of the slurry pipe at a measuring point in real time, and monitored data is transmitted to the data acquisition and processing system, so that risk assessment can be conducted.

System and method for detecting and measuring chemical perturbations in a sample. The system and method are useful for non-invasive pH monitoring of blood or blood products sealed in storage bags.

A wireless electronic monitor for a container such as an aquarium is described. The apparatus comprises a sense and transmit assembly (STA) 15 configured with a pH sensor 6 submerged in the water inside the aquarium, and a receive and display assembly (RDA) 33 that displays the output of the sensor 6. A line-of-sight orientation is maintained between openings in each assembly using magnets to generate a clamping force on a transparent tank wall 16. A water test button 22 is pressed, and a single pulse of light travels from the RDA 33 to the STA 15. The single pulse of light turns the STA 15 on by closing a timed switch to the battery power. The pH sensor 6 output is converted to a train of frequency-modulated pulses of light that are transmitted back to the RDA 33. The frequency of the train of light pulses is determined by a CPU in the RDA 33, and assigned a pH value from calibration tables stored in electronic memory. The pH value is shown on a pH sensor output display 20 which can be manually placed anywhere on the tank wall by grasping the RDA 33 from the outside of the aquarium, and sliding the entire monitor to its desired location without getting wet hands. To fully realize a true monitor of the pH, the CPU in the RDA 33 is programmed to make periodic measurements of the pH by periodically emitting the single pulse of light to the STA 15. The results of each measurement are compared with upper and lower pH boundaries stored in an electronic memory. If a measurement is outside of a pre-determined range, the CPU activates an alarm speaker 28 and an alarm light 30.

The invention discloses a system and method for cultivating nutrient soil through a domestic sludge anaerobic reaction, and belongs to the technical field of environmental disposal. The system is composed of a sludge anaerobic digestion device, a temperature monitoring and adjusting device, a PH monitoring and adjusting device and a finished product crushing and mixing device, and comprises a transversely arranged fermentation tank, a first stirring paddle arranged in the fermentation tank, a second stirring paddle arranged in the fermentation tank, a controller, a heat-conducting boiler, a first water tank, a second water tank, a first temperature sensor arranged on the first stirring paddle, multiple second temperature sensors arranged on the inner wall of the fermentation tank, a PH monitoring sensor, a PH adjusting tank containing an alkaline regulator, a pulverizer and a mixing chamber arranged on a truck scale. The effects of automatically adding fungicide and calcium oxide, conducting heating, fermenting and crushing and preparing organic nutrient soil can be achieved.

The invention belongs to the technical field of sewage treatment, and particularly relates to a denitrification collaborative bio-doubling process. The bio-doubling process comprises a main system and an auxiliary system and is characterized in that the main system comprises an inflow water distribution system, a liquid level changing water outlet system, a variable frequency air blowing accurate aerating system, an independent stirring system, a pre-arranged denitrification selection tank, a main biochemical reaction pond, a reflux pump and a sludge discharging pump; the auxiliary system comprises an accurate aerating electric control system, an independent stirring system, a special-type agent feeding system, a temperature monitoring system, a PH monitoring system and a dissolved oxygen monitoring system. According to the denitrification collaborative bio-doubling process, chemical waste water can be effectively purified, an excellent water outflow effect can be achieved, hazard-free treatment is carried out on the sewage, environment benefits are created, reclaimed water is reused and certain economic efficiency is created.

The invention discloses an efficient organic recovered solvent purification device and process.A feed pump and a feed liquid flow meter are arranged at a feed port of a mixing reactor, a liquid outlet of the mixing reactor is communicated with a pipeline and a reaction mixture circulating pump, the other end of the pipeline is communicated with a feed port of a rotary liquid separator, a reaction opening is formed in the top of the mixing reactor, a three-way valve is arranged at the reaction opening, one channel is an empty channel, and another channel is communicated with a heavy phase circulating liquid outlet of the rotary liquid separator.A pH monitoring instrument is arranged at the heavy phase circulating liquid outlet, a rotary liquid separator light phase outlet is formed in the top of the rotary liquid separator and communicated with an online drying agent replacing device, a liquid removal three-way valve is arranged on the liquid removal pipeline, one channel is a liquid outlet of a de-rectification pipeline, and another channel is communicated with the feed port of the mixing reactor through a pipeline.The device and process are compact in structure, small in size, reasonable in layout, convenient to maintain, efficient and safe.

The invention discloses mozzarella cheese and a preparation technology thereof. According to the preparation technology, purple cabbage pigment powder is initiatively added to pre-acidified raw milk,besides, according to product characteristics, in the subsequent technology, blanched clots are impregnated in a purple cabbage pigment aqueous solution, anthocyanin in the purple cabbage pigment powder is used for monitoring changes of pH value of whey and the clots, and when the pH value changes, the structure of the anthocyanin changes, so that products generate remarkable color changes, guiding and prompting effects are achieved for producing and processing, and the problem that pH monitoring is time-consuming and labor-consuming in the preparation process of the mozzarella cheese is solved. Besides, in the subsequent technology, the blanched clots are impregnated into the purple cabbage pigment aqueous solution, and a storage technique is combined, so that pink effects of mozzarella cheese finished products can be better maintained, and the problem that the mozzarella cheese appearing in the market at present is single in color (yellowish or milky white) is solved.

The invention relates to the technical field of nitrogen-containing wastewater treatment, and specifically discloses a sulfur filler-based composite denitrification reactor. The sulfur filler-based composite denitrification reactor comprises at least one reactor main body, wherein the reactor main body is internally filled with biofilm filler and sulfur solid filler; the reactor main body is connected with a pH (Potential of Hydrogen) regulating system; the pH regulating system is used for injecting a pH regulating agent in the reactor main body according to a pH monitoring result in the reactor main body; a water inlet and a water outlet are also formed in the reactor main body. The invention also relates to a denitrification treatment technology of high-ammonia nitrogen wastewater by applying the sulfur filler-based composite denitrification reactor. According to the sulfur filler-based composite denitrification reactor and the denitrification treatment technology, disclosed by the invention, the removal rate of total nitrogen such as ammonia nitrogen and nitrate nitrogen in sewage can be increased, the amount of sulfate radicals in the reactor can be controlled, an anaerobic ammonia oxidation process and a denitrification process can be integrated in the same reactor, and the purpose of efficient denitrification can be achieved through cooperative operation of two or three denitrification modes.