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.
The following document is Wastewater Technology Fact Sheet describing the pre-treatment processes of screening and grit removal using different technologies.
U.S. EPA (2003): Wastewater Technology Fact Sheet: Screening and Grit Removal. Washington: Environmental Protection Agency (EPA) URL [Accessed: 20.03.2014]