Abstract: An electronic monitoring system to accurately measure a vacuum in an interstice between inner and outer walls of a dual-wall container or pipe which allows highly accurate analysis of vacuum differential to discover and confirm a leak in either the inner or outer walls of the container or pipe within minutes.

Abstract: A storage tank system for storing fluids in an environmentally safe container which includes a rigid external primary tank having a flexible protective secondary inner tank positioned within the tank and drawn, by negative pressure, into contact with the internal walls of the rigid external tank. A continuous monitoring system is connected into, and made a part of, the portion of the system used to evacuate the space between the inner and outer tanks, so that any leakage or loss of integrity which is developed in the liner can be immediately detected at any time.

Abstract: A method and apparatus for disposing of aqueous organic wastes by filtration and microwave irradiation. The aqueous organic waste is placed on a moving activated carbon filter bed, and during the bed movement, the liquid in the waste is substantially separated from the solid organic matter. In the course of separation, and during movement of bed, both the liquid and the organic solid matter are irradiated with microwaves and are thereby stabilized and sterilized. A portion of the sterilized organic solid residue is stored, and is subsequently converted to activated carbon to be used in the filter bed.The apparatus of the invention includes a rotary porous disc supported over a bed of activated carbon which is rotatable with the disc. A source of microwaves is positioned over one side of the disc for irradiating material on the disc and the activated carbon in the bed.

Abstract: An apparatus for efficiently disposing of combustible organic waste materials, such as organic industrial and household wastes, comprising a macerator and an evaporation unit where liquids are removed from the waste to leave a concentrated organic residue. Evaporation of liquids from the waste is accomplished by heat exchange with a medium heated, in part, by exhaust gases from an internal combustion engine, and in part by incineration of the solid, relatively dry organic residue. The liquids from the evaporation unit are preferably condensed to a suitable liquid form for subsequent use, and the concentrate remaining after liquid evaporation is introduced to a high temperature zone developed in the course of the operation of an internal combustion engine, so that the solid organic residue is incinerated to a relatively small quantity of ash and innocuous gases. Heat for the purpose of partially heating the heat exchange medium used in the evaporation unit is developed in the course of such incineration.