uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Small-scale Systems for GreywaterReuse and Disposal
2010 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Greywater, e.g. wastewater from kitchen, bathroom and shower sources, discarded untreated

on the street is a common problem in urban and peri-urban environments in low-income

countries; it damages infrastructure and becomes a health risk due to mosquito breeding and

pathogen growth. In water scarce areas, ecological sanitation greywater disposal systems that

reuse the greywater to grow plants have been popular as they offer safer disposal methods and

can lead to reduced water stress and increased food security.

This work aimed at evaluating two such systems

– vertical gardens and mulch beds – that

were implemented as an alternative to current greywater disposal practices in low-income

households in Ouagadougou, Burkina Faso. Literature on greywater reuse and disposal

systems and risks connected with greywater irrigation were studied as well as relevant sitespecific

parameters. Experiments were carried out on two new vertical gardens in addition to

soil analyses, interviews and observations in households where vertical gardens and mulch

beds had been in use for several months

The major problem with the tested systems was the buildup of a water column in the vertical

garden and of standing water in the mulch bed due to overloading and poor dimensioning,

which results in anaerobic conditions, a large sludge production and clogging of systems.

Other problems in the vertical gardens included direct contact between potentially

contaminated greywater and plants and poor water reuse potential. In both cases, it was not

advised that the implemented systems continue to be recommended. Suggested improvements

for a vertical garden included separated application inlet for greywater and a different design

to reduce clogging and increase the water reuse. An improved, larger mulch bed was also

suggested.

An alternate system, combining primary filtration and horizontal gardening was suggested,

but needs further evaluation. Considering the conditions in Ouagadougou and the experienced

problems with the implemented systems, it was recommended that leach pits might be the

most viable option for greywater disposal until a better functioning and properly dimensioned

greywater reuse and disposal system can be found.

Place, publisher, year, edition, pages
2010.
Series
UPTEC W, ISSN 1401-5765 ; 10 020
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-350595OAI: oai:DiVA.org:uu-350595DiVA, id: diva2:1205490
Educational program
Master Programme in Environmental and Water Engineering
Supervisors
Examiners
Available from: 2018-05-14 Created: 2018-05-14 Last updated: 2018-05-14Bibliographically approved

Open Access in DiVA

No full text in DiVA

Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 5 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf