Abstract: The invention discloses systems and methods for producing a gas stream containing ozone and a “carrier” or sweep gas that has an oxygen concentration that is below a predetermined percentage for treatment of organic waste feed stocks in an anaerobic digester. In one embodiment, ozone and unreacted oxygen from an ozone generator are delivered to a pressure swing adsorption cycle, wherein the ozone is adsorbed onto a sieve and the excess oxygen is removed from the cycle. The sweep gas, which has a limited oxygen concentration, is then used to desorb the ozone from the pressure swing adsorption cycle and deliver the ozone to an anaerobic digester, where the ozone is used to treat the feed stock.

Abstract: Methods for treating animal waste, particularly liquid fractions separated from manure, with high purity oxygen are provided to increase the dissolved oxygen content of the wastewater and minimize stripping of volatile gases. In particular, methods of the invention for treating animal waste comprise separating animal waste into a liquid fraction and a solid fraction, and aerating at least a portion of the liquid fraction with oxygen having a purity greater than 90% until the dissolved oxygen (DO) level of the liquid fraction is between about 2.0 mg/L and about 9.0 mg/L.

Abstract: The invention discloses systems and methods for producing a gas stream containing ozone and a “carrier” or sweep gas that has an oxygen concentration that is below a predetermined percentage for treatment of organic waste feed stocks in an anaerobic digester. In one embodiment, ozone and unreacted oxygen from an ozone generator are delivered to a pressure swing adsorption cycle, wherein the ozone is adsorbed onto a sieve and the excess oxygen is removed from the cycle. The sweep gas, which has a limited oxygen concentration, is then used to desorb the ozone from the pressure swing adsorption cycle and deliver the ozone to an anaerobic digester, where the ozone is used to treat the feed stock.

Abstract: System for cooling a pumpable material comprising an inline continuous mechanical mixer having a feed inlet, a liquid cryogen inlet, and a cooled product outlet; a cryogenic liquid delivery and injection system adapted to introduce a liquid cryogen into the liquid cryogen inlet; and a feed pump adapted to introduce the pumpable material into the feed inlet.

Abstract: System for cooling a pumpable material comprising an inline continuous mechanical mixer having a feed inlet, a liquid cryogen inlet, and a cooled product outlet; a cryogenic liquid delivery and injection system adapted to introduce a liquid cryogen into the liquid cryogen inlet; and a feed system adapted to introduce the pumpable material into the feed inlet.

Abstract: A method rapidly cools meat by exposure to a rapid cooling temperature of no more than about ?10° C. for sufficient time to provide a frozen crust on the meat and chills the resultant crust-frozen meat by exposure of said crust-frozen meat to a chilling temperature greater than the rapid cooling temperature but no more than about +10° C. to raise the temperature of the surface of the meat and to maintain said surface at a temperature no higher than the freezing temperature of the meat for at least sufficient time to injure lethally and/or kill bacteria, thereby reducing the viability of bacteria on meat. The method has particular application in the processing of poultry meat to kill bacteria comprising the Campylobacter and/or Salmonella species. The meat is disinfected in a non-intrusive manner, leaving the meat in as natural a state as possible.