Cardiff Laboratories for Energy & Resources Limited

Other

Dynatech Corporation

Hamworthy Engineering Limited

Enviro Control Limited

David A Stafford

Ian R Johnson

Clive Goodfield

Ian Robert Johnson

Stephen P Etheridge

Colin Genner

Stuart Wilson

Dennis L Hawkes

Rex Horton

Robert A Hall

The apparatus comprises an anaerobic digester for receiving organic waste, an aerobic digester, and a feed pump for pumping effluent from the anaerobic digester to the aerobic digester. The digesters each comprise a reaction vessel and each reaction vessel has a spray nozzle at or adjacent to its apex for spraying an anti-foam liquid at the contents of the vessel. A method of treating organic waste is also disclosed.

Apparatus for and a method of treating organic waste

A luminometer comprises a body which is formed with a bore for receiving a sample container and a cavity communicating with the lower end of the bore. A control device having a part-circumferential ramp is rotatable within the cavity for displacing the sample container along the bore to and from a test position in which the sample container is exposed to a photo-multiplier device. The control device is rotated by a cap which is coupled to the control device and which covers the upper end of the bore in light-tight manner as the control device lowers the sample container to the test position.

Luminometers with sample container displacement controlled by ramped

An injection system for use with a luminometer, which includes a carrier movable between a liquid loading station and a liquid dispensing station and a dispenser assembly mounted on the carrier and including an injector needle arranged, when at the liquid loading station, to pass through an aperture in a part of the luminometer aligned with a test sample container therein, the container being in a test chamber with which a photomultiplier device communicates. The system also includes a sealing arrangement which prevents light from passing through the aperture in the luminometer, both when the needle extends through the aperture and when the needle has been withdrawn from the aperture.

Injection systems for sample testing for luminometers

A luminometer construction including means for supplying samples contained in respective cuvettes 20, in succession to be examined, the cuvettes being introduced into a carrier 10 having a cuvette gripper 19, the carrier 10 defining an examination chamber 21 into which the cuvettes are inserted, the carrier 10 being rotatable between a loading and a test position in which the examination chamber 21 is adjacent to a photo-multiplier device 25, whereby testing of a sample in a curvette 20 can be carried out, the examination chamber 21 having an edge in a plane inclined to the axis 11 of rotation of the carrier 10, and the photo-multiplier device 25 being arranged with its optical axis 26 perpendicular to such plane.

Luminometer construction

Apparatus for anaerobic digestion of organic waste material comprises a container divided into three interconnected chambers situated one below the other, the upper chamber being an inlet chamber, the lower chamber being a mixing chamber and the intermediate chamber being a settlement chamber, the inlet chamber having an inlet for material to be treated, a duct from the inlet chamber down into the mixing chamber, at least one transfer duct from the mixing chamber up into the settlement chamber, the duct or ducts extending below the upper extent of that mixing chamber, a gas collection zone at the upper extent of the mixing chamber, at least one recirculation duct from the base of the settlement chamber down into the mixing chamber, a further gas collection zone in the upper extent of the settlement chamber and an outlet from the settlement chamber situated below the further gas collection zone.

Apparatus for anaerobic digestion of organic waste

An apparatus for the anaerobic digestion of natural organic waste comprises a feed tank, a digester and an outlet tank. There is further provided feed means which feeds waste to be digested from the feed tank to the digester at an adjustable continuous rate. A gas pump may be used to recirculate from the top of the digester through a diffuser to the bottom of the digester. A suitable gas pump comprises a container partially filled with liquid so as to provide a space above the liquid surface and within the container sealed by the liquid from the exterior of the container, pumping means being provided in the said space.

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Cardiff, United Kingdom

David A Stafford