Catalogue

18 factsheets

UASB

UASB maintains a high concentration of biomass through formation of highly settable microbial aggregates. Wastewater flows upwards through a blanket…
Last updated 16 April 2019

Understanding PAVITR technologies in a regional context – our experiences with the ALLOWS tool in India

In many developing and emerging countries, it can be difficult to access and collect on-site data due to many unavoidable reasons like cost, time,…
Last updated 31 July 2023

Unplanted Drying Beds

An unplanted drying bed is a simple, permeable bed that, when loaded with sludge, collects percolated leachate and allows the sludge to dry by…
Last updated 10 June 2019

Upflow Anaerobic Sludge Blanket Reactor (UASB)

The upflow anaerobic sludge blanket reactor (UASB) is a single tank process. Wastewater enters the reactor from the bottom, and flows upward. A…
Last updated 03 June 2019

Urban Settings

At the end of 2015, about six out of ten refugees lived in urban areas (UNHCR 2016). Refugees and Internally Displaced People (IDPs) move to cities…
Last updated 27 April 2018

Urban Sustainable Sanitation and Water Management

Integrated Urban Water Management (IUWM) aims at designing and managing the urban water system in a holistic manner. This section provides a basic…
Last updated 27 April 2018

Urinal

An urinal is used only for collecting urine. Urinals are generally for men, although models for women have also been developed. Most urinals use…
Last updated 13 May 2019

Urine Diversion Components

The separate collection of urine allows to reduce water used in toilets for flushing and to collect the nutrients contained in the urine in order to…
Last updated 31 May 2019

Urine Evaporation

Coming soon...
Last updated 07 February 2018

Urine Fertilisation (Large-scale)

Separately collected and hygienised urine is a concentrated source of nutrients which can be applied as a liquid fertilizer in agriculture to replace…
Last updated 27 May 2019

Urine Storage

Urine makes up less than 0.5 % of household wastewater but contains most of the essential plant nutrients N, P and K. Waterless urinals or urine…
Last updated 31 May 2019

Urine Storage Tank / Container

When urine cannot be used immediately or transported using a conveyance technology (i.e. [8287-jerrycans]) it can be stored onsite in containers or…
Last updated 31 May 2019

Urine-Diverting Dry Toilet (UDDT)

A urine-diverting dry toilet (UDDT) is a toilet that operates without water and has a divider so that the user, with little effort, can divert the…
Last updated 11 May 2019

Urine-Diverting Flush Toilet (UDFT)

The urine-diverting flush toilet (UDFT) is similar in appearance to a cistern flush toilet except for the diversion in the bowl. The toilet bowl has…
Last updated 12 May 2019

Using Indicators to Measure Progress and Performance

Progress and performance must be measured to attest a development in a (long term) project. With few, but carefully selected indicators, it is…
Last updated 19 June 2019