31
John T Dibble, William R Deever, Lloyd J Parcell, Rudolph C White: High rate sludge reactor. Texaco, Jack H Park, Kenneth R Priem, Richard A Morgan, May 26, 1987: US04668388 (26 worldwide citation)

A high rate reactor for the treatment of biosludge has been designed which combines the processes of landfarming, sand bed dewatering, and forced aeration composting. The reactor is essentially a sand bed overlying a drainage system housed in an inflatable, pressurized building.


32
Stuart P Suskind: Degradable package for containment of liquids. Leonard Pearlstein, Finnegan Henderson Farabow Garrett & Dunner, July 30, 1996: US05540962 (25 worldwide citation)

A compostable paperboard container and package for liquids is coated with a polymeric material capable of degrading under composting conditions and subsequently in the presence of light to form carbon dioxide, water, and biomass.


33
Robert A Kruse: Waste materials recycling method and apparatus. Burd Bartz & Gutenkauf, October 24, 2000: US06136590 (25 worldwide citation)

A waste material separating method and apparatus a number of sequential processes the separate paper, plastic, glass, wood, and metals from waste materials. Bulk materials are manually removed from conveyors. Screening machines separate fine from course materials. Fine organic materials are transpor ...


34
Robert E Weber, William E Knaak: Agricultural mulch and row cover. Kimberly Clark Corporation, Patrick C Wilson, November 17, 1992: US05163247 (25 worldwide citation)

The present invention relates to an agricultural mulch made from a fibrous cellulosic web having a certain breaking length and which had been surface-coated with a latex coating to improve wet strength and handling properties. The material of the present invention, once formed, is particularly suita ...


35
David P Chynoweth, Robert LeGrand: Apparatus and method for sequential batch anaerobic composting of high-solids organic feedstocks. University of Florida, Kerkam Stowell Kondracki & Clarke, December 14, 1993: US05269634 (25 worldwide citation)

Apparatus and method for performing sequential batch anaerobic composting on high solids content wastes are provided, wherein a plurality of longitudinally extending trenches in the ground are employed as waste-holding receptacles, each of the trenches being provided with a cover having a peripheral ...


36
Richards Albert Z, Madsen Lynn S: Composter. Bojanowski Richard F, September 24, 1974: US3837810 (25 worldwide citation)

A rectangular or square container, made of a heat insulating material such as wood, for converting organic wastes into compost is mounted for rotation about a supported perforated pipe extending axially through the container. A water-holding manifold is connected via a conduit to the perforated pipe ...


37
Hermann Jung, Gunter Spennes: Apparatus for rapid machine composting of sewage sludge. Kutsch Consult, Finnegan Henderson Farabow Garrett & Dunner, March 10, 1981: US04255389 (24 worldwide citation)

A device for the rapid machine composting of sewage sludge including a rotary drum and having a feeding device extending longitudinally of the drum for feeding material to be composted into the drum. Air, heat and moisture are supplied to and discharged from the sludge compost and the composted mate ...


38
Agustin H Arrau: Co-composting process and apparatus for treating solid waste and sewage sludge. Bio Waste Technologies International, Wolf Greenfield & Sacks, July 9, 1996: US05534437 (23 worldwide citation)

A method for converting municipal solid waste and sewage sludge into an organic fertilizer has a Stage 1 and a Stage 2, and includes a vessel that has three climate zones. Stage 1 has three climate zones, wherein the first climate zone contains thermophilic microorganisms, the second climate zone co ...


39
Charles L Johnson Jr, Howard J Brown, William F Brinton Jr: High-strength septage biological treatment system. Charles L Johnson Jr, Bachman & LaPointe P C, October 3, 2000: US06126827 (23 worldwide citation)

A wastewater treatment system is disclosed which can be used to treat high-strength septage, sewage and industrial wastewater. The wastewater treatment system consists of three major components. In the first component, solids are separated from the liquid component of the wastewater being treated. T ...


40
Geoffrey F Shattock: Microbiological processes to produce fuel gas. Wellington M Manning Jr, Luke J Wilburn Jr, April 15, 1980: US04198211 (23 worldwide citation)

A process of treating an animal manure slurry susceptible to aerobic composting and anaerobic microbiological degradation with the production of a fuel gas, comprises: separating the slurry into a first, solids concentrated, fraction of relatively coarse particle size, and a second, solids dilute, f ...



Click the thumbnails below to visualize the patent trend.