1. Sanitation chain

2. Ethiopia.
ADAMA: 250.000 inhabitants,
growth 4%/year;
no sewer system

3. ROSSA: Workshops and training on sanitation

4. Banks
Communities
Government
SME’s
Ownership gives responsibility in the diamond system!

5. Pit construction with the
“mold of Urk”.

6. Choose your cabin: simple or advanced

7. Market place Adama:
Renewed toilet with ROSSA (diamond system).
Ready, November 2015
Handover to Kebele: December 2015

8. Bus station Adama: 10.000 visitors / day
Expanded with ROSSA (diamond system), including ABR treatment system
Ready, februari 2016

9. Extra ROSSA project on school sanitation.

10. Commissioned by ROSSA:
Adama machine constructor works on small vacuum system for pit emptying.

11. Pilot with sludge drying bed at ADAMA University.
A successful start-up system for ADAMA

12. Dried sludge + kitchen waste gives
quality compost!

13. Dried sludge + charcoal powder:
A useful fuel!

14. Resource orientated from food to growth:
Possible reusable products.

15. ROSSA research on reuse of WTP products:
Gerlinde Buit e.a.: “Acceptance and demand of human
excreta-based fertilizers in and around Adama, Ethiopia”

16. 5. Future options
digester (option)
sludge charcoal
fuel (with coal
powder)
dried
septic
reuse
compost (option
with vegetable
waste)
septic sand drying bed
filtrate treatment
settling pond
Adama
septic
aerobic treatment
(trickling filter)
(settlet sludge back to thickener)
Heat from biogas for pasteurisation and
ammonium stripping
sludge thickener
overflow thickener pasteurisation and
ammonium stripper
(f.i. ammonium sulphate)
ammonia vertiliser
constructed
wetland
Anaerobic reactor (digester):
- Stabilising the sludge (better dewatering)
- Less pathogens
- Production of biogas
- Concentration of nitrogen
Ammonium stripper
- Needs 60 – 80 degrees oC
- Adding NaOH/H2SO4
- Product: ”ammonium sulphate”
- Resource for fertilizer
- Sequential batch reactor
- Nereda
- M-uct activated sludge
Irrigation water
Electricity!

17. Handover of the ROSSA project to the municipality of Adama
Adama municipality knows
now the sanitation chain.
We became Adama citizens.
A follow up is already asked by Adama:
- Accompany of the sanitation program
- Training and advice on the septic filter
- Advice for a WTP system for Adama
- Flooding problems

18. Please,
If you don’t do it for yourself
Do it for the children!