MASTER'S THESIS - SuSanA
MASTER'S THESIS - SuSanA
MASTER'S THESIS - SuSanA
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4 Presentation of technologies for rural areas<br />
Ponds /lagoons<br />
X<br />
X<br />
– settlement<br />
ponds<br />
– WSP<br />
– aerated<br />
ponds<br />
X<br />
X<br />
X<br />
X<br />
(X)<br />
Oxidation dich<br />
X<br />
Anaerobic filter X (X) X<br />
UASB X (x)<br />
Activated sludge<br />
X<br />
Sedimentation/<br />
Thickening pond<br />
Unplanted drying<br />
bed<br />
X<br />
X<br />
Planted drying bed X X<br />
(Co-)Composting X X<br />
Irrigation system,<br />
drainage, leach<br />
fields<br />
X<br />
X<br />
Soak pit X X<br />
As presented technologies serve different purposes like collection, transport or treatment, an useful and<br />
appropriate combination has to be found for each site. Transport of wastewater and sludge is not necessary<br />
if treatment takes place on site. Some common combinations of the presented technologies or wastewater<br />
treatment components are the following:<br />
On-site: • Septic tank + soak pit/ leach field<br />
• Imhoff tank + constructed wetlands + sludge drying beds<br />
Centralised: • Septic tank + small bore sewer + centralised treatment plant<br />
• Conventional sewer system + centralised treatment plant<br />
44