5362182 WASTE DISPOSAL LANDFILL HAVING SUBSURFACE IMPERMEABLE SHEETS WHICH CAN BE MONITORED WITH RESPECT TO THEIR IMPERMEABILITY
5362401 METHOD AND APPARATUS FOR CLEANING A FILTER APPARATUS Whetsel Jackie G Aqua-Aerobic Systems Inc
A method and apparatus for cleaning a filter apparatus in which liquid influent is passed through web filter material on a rotatable filter frame into a filter effluent compartment and wherein the filter material is intermittently backwashed during a filter time by a suction device at an outer side of the falter material which draws filtered liquid from filtered effluent compartment in a backwash direction through the filter material, and wherein the filter material on the filter frame is subjected to a wash operation during a wash time by directing a high pressure liquid spray at one side of the filter material. The pressure in the suction device during backwashing is monitored, and the wash operati& is initiated-after the pressure in the suction device reaches a preselected subatmospheric pressure.
METHOD AND APPARATUS FOR CONVERSION OF WASTE OILS
Hergenrother Hans-Gunter GmbH
A waste disposal landfill has at least one subsurface impermeable sheet for containing and directing fluid runoff from the site. This impermeable sheet can be remotely monitored with respect to its impermeability to verify that there are no breaks in the sheet and that no waste is passing therethrough.
LASER CONTROLLED DECOMPOSITION OF CHLOROFLUOROCARBONS
Brown Stanton; Wentworth Michael M; Marstaller Ronald D; Bullin Jerry A Brown Stanton Waste lubricating oil is reprocessed into commercially usable diesel fuel and naphtha by thermocracking. A thermocracker unit is fired with sludge removed horn the principal pool of oil undergoing vaporization. The vapors are separated from liquids in a primary distillation tower with precisely controlled heating. Resultant vapors are partially condensed. Resultant liquids flow downward through a secondary distillation tower into a reboiler which is heated by a flue gas bypass with an auxiliary burner. Vapors leaving the secondary distillation tower are partially condensed and resultant fluids are passed to a light ends flash tank. Gases from the flash tank fuel the auxiliary burner. Liquids are collected and stored for selling as naphtha. Hot liquids are withdrawn from the reboiler and are immediately cooled to atmospheric conditions. Liquids within specification are stored in a diesel storage tank for further use and sale. Off-specification products are stored in a reflux storage tank and are pumped and heated and sprayed downward in the primary distillation tower for washing the tower and for reprocessing in the thermocracking unit. Some light ends are mixed with sludge in a storage tank. The mixture is pumped as sludge fuel to the burner in a fire tube in the thermocracking unit.
Russell Stephen D; Sexton Douglas A The United States of America as represented by the Secretary of the Navy A method to decompose chlorofluorocarbons gases (CFCs) enables the conventional disposal of their by-products. It employs photodecomposition of the CFC gas using UV light and a mediating species to allow chemical reactions to occur which form an effluent which is hydrolyzed by conventional methods.
5362577 DIFFUSION VENT FOR A RECHARGEABLE METAL-AIR CELL Pedicini Christopher S
AER Energy Resources
A vent system for exhausting gas generated within a battery case is provided. The vent system