Abstract: A wave energy buoy includes a spar that may be anchored to the sea bed and a float fitted to the spar for movement axially of the spar. The spar includes a spar tube and the float includes a generally annular shell defining an opening through which the spar tube extends. The spar tube and the float shell are made of composite material.

Abstract: A wave energy buoy includes a spar that may be anchored to the sea bed and a float fitted to the spar for movement axially of the spar. The spar includes a spar tube and the float includes a generally annular shell defining an opening through which the spar tube extends. The spar tube and the float shell are made of composite material.

Abstract: A cartridge for holding compost in a biofilter is substantially uniform in cross section perpendicular to the axis of the cartridge and has a sidewall formed with openings that are small enough to substantially retain the compost in the cartridge yet large enough to allow filaments of bacteria present in the compost to project through the openings. The cartridge is of cross-sectional form such that multiple cartridges can be placed side-by-side in an array with passages between each cartridge and adjacent cartridges.

Abstract: Air laden with biodegradable volatile organic compounds is passed sequentially through a first filter bed containing a biologically inert filter media and a second filter bed containing a biologically active filter media. Water is present in the biologically active filter media and the biologically inert filter media. Water that drains from the second filter bed is collected and supplied to the first filter bed.

Abstract: A cartridge for holding compost in a biofilter is substantially uniform in cross section perpendicular to the axis of the cartridge and has a sidewall formed with openings that are small enough to substantially retain the compost in the cartridge yet large enough to allow filaments of bacteria present in the compost to project through the openings. The cartridge is of cross-sectional form such that multiple cartridges can be placed side-by-side in an array with passages between each cartridge and adjacent cartridges.

Abstract: Apparatus for treatment of material containing biodegradable volatile organic compounds in solid or liquid state, comprises a first chamber having a gas inlet and a gas outlet, the gas inlet being below the gas outlet. Material to be treated is supported in the first chamber between the gas inlet and the gas outlet. The material to be treated is warmed and an upward flow of air is established in the first chamber whereby biodegradable volatile organic compounds in the material are volatilized and become entrained in the upward flow of air. A second chamber has a gas inlet and a gas outlet, the gas inlet of the second chamber being below the gas outlet thereof. A duct delivers gas from the gas outlet of the first chamber to the gas inlet of the second chamber. A biologically active matrix including at least one organism that biologically converts the organic compounds to a non-toxic form is supported in the second chamber between the gas inlet and the gas outlet thereof.