Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
Almost 200 pages on the treatment process and design parameters of waste stabilisation ponds. Very exhaustive.
SPERLING, M. von (2005): Part Three: Stabilization Ponds. In: SPERLING, M. von ; LEMOS CHERNICHARO, C.A. de ; (2005): Biological Wastewater Treatment in Warm Climate Regions Volume 1. London: 495-646. URL [Accessed: 16.02.2011]