Abstract: This invention is directed to a novel automatic process for effectively, reliably and economically reconditioning for direct reuse various waste waters and particularly those in the nature of poultry and food processing such as the overflow waste water from poultry carcass chill tanks without the use of added chemicals and filter-aid compounds. The invention specifically refers to the removal of gross entrained materials, by screening, floatable solids by static flotation, and, emulsified and haze producing particulates which consist primarily of the proteins, lipids and the bulk of the micro-organisms by a continuous self-cleaning microfilter capable of operationg in a tangential and filter mode with cyclic gaseous liquid backwashing for release and removal of the collected and deleterious contaminants.

Abstract: This invention is directed to a novel semi-rigid enhanced area filter element that can be installed and used with new or existing bag-type filter housings. The invention specifically refers to the pleated and padded element (5) fitted closely within a retaining basket (4) inside of a bag-type pressure filter housing (1) to provide preferred inside-out flow passage from inlet (2) to outlet (3) but with greatly enhanced surface area, padded serialized inner filtration, extended filter life and increased particulate removal efficiencies. The element (5) is composed of a pleated and padded stack (18) bonded to a resilient flanged upper open end cap (8) and a solid bottom end cap (9). The element is economical to manufacture, can utilize many of the single and multi-layer filter membranes and impregnated membranes presently on the market, and is free of complicated parts and mechanisms.

Abstract: A method and apparatus are provided for adsorbing one or more first gases from a mixture thereof with a second gas to reduce the concentration of first gas in the mixture to below a permissible maximum concentration. The flow rate, inlet and outlet temperatures, inlet and outlet pressures and regenerating pressures are sensed, and the sensed information fed to a microprocessor programmed to calculate the quantity of purge required to regenerate the adsorbent bed off-stream for regeneration, calculate the purge flow rate, and, based on these calculations, control the regeneration time so that purge flow ceases when the adsorbent bed has been regenerated, control the cycling time, and switch the adsorbent beds at the end of each cycle period. The system is particularly applicable to the drying of gases.