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| Number | Title | Issue Date |
| 4623469 | Method for rendering hazardous wastes less permeable and more resistant to leaching A method for treating liquid and semi-liquid wastes to render them fit for ultimate disposal, by first determining the ionic charge of the waste counter ions. An appropriate suspension of emulsified asphalt particles is then selected having an opposite pa... | 11/18/1986 |
| 4614594 | BS and W measurement system The basic water and sediment (BS&W) system compares a wet stream to a dry stream of the same oil in two electrical capacitance cells. A numerical zero offset is employed in the comparison to compensate for voltage output differences between the cells. The... | 09/30/1986 |
| 4554077 | Method and apparatus for monitoring sewage treatment efficiency and determining sewage sources A method of tracing sewage effluent is described in which samples of fluid flows are subjected to high performance liquid chromatography with respective elution systems capable of eluting different selected compounds therefrom, and the concentration of ea... | 11/19/1985 |
| 4543191 | BS&W in crude oil streams Capacitance cells comprising concentric tubes are maintained clean of sediment in the space between the inner and outer tubes where capacitance is measured by (1) suspending fibrous strands in the fluid flow outside the inner tube and/or (2) partially plu... | 09/24/1985 |
| 4510060 | Measurement of bs&w in crude oil streams Temperature variations of fluid streams within a BS&W recorder system are controlled by heat exchange and recycling through the pump to reduce waxing and capacitance measurement errors.... | 04/09/1985 |
| 4492639 | Leak detection A process is provided for measuring the water and sediment content of a wet stream which is predominantly non-aqueous. The process requires removing a sample of the wet stream, extracting a dry stream sample from the wet stream sample, and comparing the d... | 01/08/1985 |
| 4488970 | Diesel fuel monitor system, negative pressure type An improved negative pressure type diesel fuel monitor system that determines a specified level of water trapped in a component of the system and disposed of said water, said water having been separated from the fuel being pumped in the engine fuel line h... | 12/18/1984 |
| 4468331 | Method and system for liquid choromatography separations A microprocessor-based analytical liquid chromatograph is programmed to run automatically a series of experiments on a sample mixture using four solvents to determine the solvent strengths and composition needed to optimize resolution.... | 08/28/1984 |
| 4439325 | Pressurized filtration system A method and apparatus for controlling the operation of a primary filter press to insure the attainment of a desired quality cake in the press including a conduit for feeding a slurry or composition to the filter press, transducers responsive to the volum... | 03/27/1984 |
| 4426293 | Method and apparatus for removing oil from water A method and apparatus for removing oil from water. The invention includes a separation vessel for separating the oil by gravity from the water. The generally oil-free water from the separation vessel is pumped under pressure through an ultrafine molecula... | 01/17/1984 |
| 4425231 | Waste water treating apparatus A waste water treating apparatus includes a circulation type aeration tank having a downward flow chamber and an upward flow chamber extending in the depth direction and communicating with each other at the upper and lower ends thereof. An oxygen containi... | 01/10/1984 |
| 4416786 | Process for the treatment of continuous waste water streams having changing contents of different oxidizable materials with hydrogen peroxide There is provided a continuous process for the lowering of the content of toxic materials in waste waters which also contain other oxidizable materials by quickly and continuously ascertaining the requirement of hydrogen peroxide, namely by potentiometric... | 11/22/1983 |
| 4405462 | Automatic revitalization of sulfide processing and treatment solutions A system and process has been devised for measuring and constantly maintaining a desired concentration of soluble sulfides in a processing solution for the purpose of fully maintaining its function. Sulfide regenerating solution is automatically introduce... | 09/20/1983 |
| 4402912 | Device to automatically add a controlled amount of corrosion inhibitor with a change in spring loading A system for the addition of a corrosion inhibitor to an engine cooling system wherein a container in the coolant system holds the corrosion inhibitor in a solid package which is withheld from contact with the coolant solution by a spring under load. The ... | 09/06/1983 |
| 4401575 | BS And W in crude oil streams An improvement is provided in a process for measuring BS&W in crude oil by centrifugal separation of dry oil from wet oil and comparison of the dielectric constants of the two, the improvement being the use of at least two seals separating a dry oil chamb... | 08/30/1983 |
| 4400270 | Ultraviolet apparatus for disinfection and sterilization of fluids An ultraviolet sterilization and disinfection system for fluids which includes apparatus for sensing selected operating characteristics such as physical characteristics of the fluid to be disinfected or sterilized and the operating conditions of the ultra... | 08/23/1983 |
| 4385973 | Process for disinfecting water In a process for disinfecting water by anodic oxidation in a reactor the volumetric flow rate, current density and contact time are selected so that there is an excess of reaction products having oxidizing power in the water at the exit from the reactor, ... | 05/31/1983 |
| 4383046 | Regeneration of ion exchange materials In mixed bed ion exchange resin regeneration processes, transfer of resin after classification is controlled by detecting a change in a parameter of transfer water dependent on ion concentration, e.g. conductivity. The process includes increasing the ion ... | 05/10/1983 |
| 4381240 | Swimming pool water conditioning system A swimming pool water conditioning system which incorporates a pump-fed, pool water filtration system; a hydrochloric acid-consuming electrolytic chlorine gas generator; and a manifold system to draw the chlorine gas into the flow through the filtration s... | 04/26/1983 |
| 4370233 | Chemical detoxification of sewage sludge A method is disclosed for the chemical detoxification of anaerobically digested organic sludge containing toxic heavy metals in insoluble form. A quantity of the sludge is transferred from a conventional anaerobic digester to an insulated reactor vessel w... | 01/25/1983 |
| 4366064 | Treatment of blast furnace wastewater Wastewater, particularly blowdown from a recycle gas-scrubbing and gas-cooling system of a blast furnace, is treated in a two-stage chlorination unit, the first stage including a chlorine addition at a pH of about 8.5 to about 10, preferably 9-9.5, and th... | 12/28/1982 |
| 4336223 | Ultraviolet method for disinfection and sterilization of fluids An ultraviolet sterilization and disinfection system for fluids which includes apparatus for sensing selected operating characteristics such as physical characteristics of the fluid to be disinfected or sterilized and the operating conditions of the ultra... | 06/22/1982 |
| 4268397 | Method of treating waste water A waste water-treating method, which comprises the steps of: adjusting the pH value of an aqueous solution containing a nitrous acid radical within a range of 2 to 5; treating said aqueous solution with hydrogen peroxide to oxidize the nitrous acid radica... | 05/19/1981 |
| 4229298 | Method and apparatus for determining the thickness of a charge wall formed in a centrifugal basket A method for determining the thickness of a charge wall being formed against the side wall of a rotating centrifugal basket by flow of charge material into the basket comprises the steps of establishing a capacitance across the charge space of the basket ... | 10/21/1980 |
| 4227173 | Diesel fuel monitor system An improved diesel fuel monitor system that determines a specified level of water trapped in a component of the system and disposes of said water, said water having been separated from the fuel being pumped in the engine fuel line hookup. The system consi... | 10/07/1980 |
| 4179347 | System for electrocatalytic treatment of waste water streams A continuous system for disinfecting waste water streams, such as sewage and streams containing organic matter and removing suspended solids therefrom is disclosed. A waste water stream is passed into an electrolytic cell open to the atmosphere and betwee... | 12/18/1979 |
| 4129501 | Method and apparatus for detecting water in oil A sheet of hydrophilic paper is laminated between two plate electrodes and immersed as a water sensor assembly in an electric power transformer oil charging flow stream. A low power and voltage d.c. potential is impressed across the plates as the oil flow... | 12/12/1978 |
| 4046621 | Process for treating a slurry of cellulosic material A slurry of cellulosic material is diluted to a flowable consistency and subjected to a pressure differential on a permeable surface to increase the slurry consistency to a value between the consistency of the diluted slurry and the consistency of the slu... | 09/06/1977 |
| 3966602 | Process and apparatus for reclaiming and regenerating spent solvent The invention is directed to process and apparatus for automatically restoring to usefulness spent cleaning and/or drying liquids comprising an aqueous phase and an oil phase, the latter comprising 1,1,2-trichloro-1,2,2-trifluoroethane, as the principal c... | 06/29/1976 |
