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Vacuum sewerage systems consist of a vacuum station, where the vacuum is generated, the vacuum pipeline system, collection chambers with collection…
Last updated 21 February 2018
Vacuum toilets are flush toilets that use suction for the removal of faeces and urine resulting in a minimal requirement of water (0.5 to 1.5 litres…
Last updated 07 February 2018
Venn diagrams were developed by the logician John Venn. They represent an easy way to identify structures or relationships among organisations and…
Last updated 07 February 2018
A vertical flow constructed wetland is a planted filter bed that is drained at the bottom. Wastewater is poured or dosed onto the surface from above…
Last updated 24 February 2018
VF CWs are secondary and/or tertiary treatment facilities for household, municipal and industrial wastewater. Pre-treated wastewater is…
Last updated 22 February 2018
The term vertical garden refers to any kind of construction and support structure for growing plants in an upwards-directed, vertical way and thereby…
Last updated 07 February 2018
The Vertical Garden is a stackable planter made for indoor and outdoor use. Also called plant wall, green wall and bio wall, this is a light framed,…
Last updated 22 February 2018
Visioning is a technique that is used to support a group of stakeholders in developing a shared vision of the future. It involves asking the group of…
Last updated 07 February 2018