The continuous activated sludge process has been successfully employed in public health engineering installations for nearly a century. The W11 is designed as a comprehensive study facility of this process.
The Armfield Anaerobic Digester is designed as a benchtop training facility and as a means of providing operational process data for plant design purposes.
The equipment allows for the well-known 'jar tests' to be conducted on water samples requiring treatment to determine the correct coagulant dosage on a laboratory scale as a prelude to full-scale plant operation.
The Armfield Sedimentation Studies Apparatus provides a facility for studying the basic physical processes involved in sedimentation.
The Armfield Permeability/Fluidisation Studies Apparatus is designed for students to measure and understand the characteristics of flow through a bed of particles. Such flows occur both naturally (in certain groundwater situations) and in process plant designs.The apparatus can also be used as part of the testing of media for water and waste water filtration.
The Armfield Filterability Apparatus enables a water quality test to be made on a suspension to be filtered through sand or similar granular media. As well as for student teaching, it can be used in routine control at waterworks, or at a sewage treatment works that employs teriary filtration.
The W7MkII has been designed to demonstrate the hydraulic characteristics and settling efficiencies of a model settling basin. Although scale-up to industrial size sedimentation tanks is difficult, relevant deductions can be made as to how nonuniform flows occur and how these interact with the settling characteristics of particular suspensions.
Bench mounted unit designed to demonstrate the use of ion-exchange resins for either continuous water softening or demineralisation.
The purpose of the Armfield Aeration Unit is to permit study of the oxygen transfer characteristics of diffused air systems and the physical and chemical parameters that influence their oxygenation capacity.