Catalogue

174 factsheets

Sedimentation/ Thickening Ponds

Sedimentation or thickening ponds are settling ponds that allow sludge to thicken and dewater. The effluent is removed and treated, while the…
Last updated 10 June 2019

Selecting and Distributing Hygiene Items

Selecting and distributing hygiene items in an appropriate and effective manner is key to successfully implementing a hygiene promotion campaign. The…
Last updated 15 April 2019

Selecting Sustainable Sanitation Systems

A sustainable sanitation system has to manage all waste products and by-products generated. It consists of a suitable combination of appropriate…
Last updated 16 June 2020

Selection of Participants

The returns from investing in training depend crucially on the quality, motivation and appropriateness of the participants. Hence, it is very useful…
Last updated 30 June 2019

Selection of Resource Persons

When developing the course curriculum, aims, and objectives, also training resource persons should be identified. Every training manager should try…
Last updated 16 April 2019

Sell Convenience

Last updated 29 July 2021

Semi-Structured Interviews

Semi-structured interviews are conducted with a fairly open framework which allows focused, conversational, two-way communication. The interviewer…
Last updated 30 June 2019

Separate Sewers

Separate sewerage consists in the separate collection of municipal wastewaters (blackwater from toilets, greywater and industrial wastewater) and…
Last updated 28 May 2019

Septic Tank

A septic tank is a watertight chamber made of concrete, fibreglass, PVC or plastic, through which blackwater and greywater flows for primary…
Last updated 31 May 2019

Sequence Batch Reactor (SBR)

Activated sludge reactors are aerobic suspended-growth type processes. Large amounts of injected oxygen allow maintaining aerobic conditions and…
Last updated 03 August 2023

Sequencing Batch Reactor (SBR) Upgrading for domestic wastewater treatment

Activated sludge reactors are aerobic suspended-growth type processes. Large amounts of injected oxygen allow maintaining aerobic conditions and…
Last updated 04 August 2023

Setting Ground Rules

Whenever individuals meet, it is helpful to develop guidelines for positive interaction. Meaningful guidelines, often called "ground rules", provide…
Last updated 07 July 2019

Setting up an Operator Model

Understanding institutional roles and responsibilities is critical to ensure reliable, cost-effective services. An operator model defines and…
Last updated 18 June 2020

Settler

A settler is a primary treatment technology for wastewater; it is designed to remove suspended solids by sedimentation. It may also be referred to as…
Last updated 20 June 2023

Sewer Pumping Stations

Sewer pumping stations (also called lift stations) are used to move wastewater to higher elevations in order to allow transport by gravity flow.…
Last updated 30 May 2019