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Waste liquid collection and disposal apparatus
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New Patents
4947860 NON-INVASIVE METHOD AND APPARATUS FOR MEASURING MIXED VENOUS CARBON DIOXIDE PRESSURE (PVCO2) AND OTHER PHYSIOLOGICAL VARIABLES Josep Fisher, Thornhill, Ontario, Canada assigned to Fisher Josep A method of determining the mixed venous PCO2 (PvCO2) is disclosed, the method comprising the steps of: (a) measuring the PCO2 of the gases inhaled and exhaled by the patient under controlled conditions without rebreathing; (b) causing the patient to inhale a test gas containing at least a small concentration of CO2 and continuing to measure the PCO2 of the inspired and expired gases, the patient taking at least two breaths without rebreathing; (c) determining the PCO2 of the inspried gases (PICO2) and the end tidal PCO2 of expired gases (PECO2); (d) determing the differences between the end tidal PCO2 and inspired PCO2 under control and test conditions, and relating it to the inspired PCO2 used in the determination of the difference. This relationship can be used to calculate the mixed venous PCO2.
4947885 BRINE M O N I T O R
In a liquid waste collection and disposal apparatus, liquid waste gravity flows to a tank through a check valve equipped inlet line. A vertical guide float within the tank controls the liquid level therein. A two-way tank venting solenoid operated valve supplies gas, under pressure, to the tank for evacuating liquid therein. An electrical circuit connects a source of electrical energy with liquid upper and lower limit magnetic switches disposed in the path of travel of the float for energizing the actuator of the solenoid valve to evacuate the fluid therein through a check valve equipped discharge line in response to the float closing the upper limit switch. When the float reaches the limit of its downward movement, the normally closed lower magnetic switch is opened to interrupt gas pressure to the tank.
4948342 METHOD AND DEVICE FOR AUTOMATIC CIRCULATION IN A WASTE WATER PUMP STATION Folk Landquist, Balsta, Sweden assigned to Flygt AB The pressure side of the pump unit is provided with a valve (6) which during certain periods opens a connection between the pump and the pump station to obtain circulation in the station. The valve (6) is opened and closed by a valve ball (9) which is controlled by the pump pressure.
Paul Hart assigned to Betz Laboratories Inc In the desalter operation of a petroleum refinery, a method which measures and regulates the stability of the oil-in-water emulsion. A device located downstream of the desalter monitors the electrical charge of oil droplets in the effluent brine. This charge reflects emulsion stability. The amount of charge streaming past a point defines a current. When a predetermined streaming current threshold is crossed, the monitoring device electrically sends a signal proportional to the excess to a metering pump or valve which adds a predetermined proportional quantity of emulsion breaker to the petroleum/water mixture in the desalter.
4948010 WASTE LIQUID AND DISPOSAL E Todd Wiggins
COLLECTION APPARATUS
49~3~ LIME
KILNS
Jeffery L Thompson An annular, vertical shaft kiln comprising a cascading process path with varying cross sectional area, in which the coarse charge particulants tend to follow the longer path near the walls as does the gas being injected into the midregion of the kiln, while the fine particulants tend to take the straighter, shorter path near the middle, thus resulting in an even calcination of varying diameters of charge particulants. The briquetted fuel which may be made of hazardous waste, is heated slowly to safely destroy such wastes in the processing. Because of the limited range of the ratio of the smallest to the largest diameter of the charge particulants, the charge particulants are sorted through wire mesh screens into bins according to diameter. The
New Patents
4947860 NON-INVASIVE METHOD AND APPARATUS FOR MEASURING MIXED VENOUS CARBON DIOXIDE PRESSURE (PVCO2) AND OTHER PHYSIOLOGICAL VARIABLES Josep Fisher, Thornhill, Ontario, Canada assigned to Fisher Josep A method of determining the mixed venous PCO2 (PvCO2) is disclosed, the method comprising the steps of: (a) measuring the PCO2 of the gases inhaled and exhaled by the patient under controlled conditions without rebreathing; (b) causing the patient to inhale a test gas containing at least a small concentration of CO2 and continuing to measure the PCO2 of the inspired and expired gases, the patient taking at least two breaths without rebreathing; (c) determining the PCO2 of the inspried gases (PICO2) and the end tidal PCO2 of expired gases (PECO2); (d) determing the differences between the end tidal PCO2 and inspired PCO2 under control and test conditions, and relating it to the inspired PCO2 used in the determination of the difference. This relationship can be used to calculate the mixed venous PCO2.
4947885 BRINE M O N I T O R
In a liquid waste collection and disposal apparatus, liquid waste gravity flows to a tank through a check valve equipped inlet line. A vertical guide float within the tank controls the liquid level therein. A two-way tank venting solenoid operated valve supplies gas, under pressure, to the tank for evacuating liquid therein. An electrical circuit connects a source of electrical energy with liquid upper and lower limit magnetic switches disposed in the path of travel of the float for energizing the actuator of the solenoid valve to evacuate the fluid therein through a check valve equipped discharge line in response to the float closing the upper limit switch. When the float reaches the limit of its downward movement, the normally closed lower magnetic switch is opened to interrupt gas pressure to the tank.
4948342 METHOD AND DEVICE FOR AUTOMATIC CIRCULATION IN A WASTE WATER PUMP STATION Folk Landquist, Balsta, Sweden assigned to Flygt AB The pressure side of the pump unit is provided with a valve (6) which during certain periods opens a connection between the pump and the pump station to obtain circulation in the station. The valve (6) is opened and closed by a valve ball (9) which is controlled by the pump pressure.
Paul Hart assigned to Betz Laboratories Inc In the desalter operation of a petroleum refinery, a method which measures and regulates the stability of the oil-in-water emulsion. A device located downstream of the desalter monitors the electrical charge of oil droplets in the effluent brine. This charge reflects emulsion stability. The amount of charge streaming past a point defines a current. When a predetermined streaming current threshold is crossed, the monitoring device electrically sends a signal proportional to the excess to a metering pump or valve which adds a predetermined proportional quantity of emulsion breaker to the petroleum/water mixture in the desalter.
4948010 WASTE LIQUID AND DISPOSAL E Todd Wiggins
COLLECTION APPARATUS
49~3~ LIME
KILNS
Jeffery L Thompson An annular, vertical shaft kiln comprising a cascading process path with varying cross sectional area, in which the coarse charge particulants tend to follow the longer path near the walls as does the gas being injected into the midregion of the kiln, while the fine particulants tend to take the straighter, shorter path near the middle, thus resulting in an even calcination of varying diameters of charge particulants. The briquetted fuel which may be made of hazardous waste, is heated slowly to safely destroy such wastes in the processing. Because of the limited range of the ratio of the smallest to the largest diameter of the charge particulants, the charge particulants are sorted through wire mesh screens into bins according to diameter. The