”Nature based Nitrogen and Phosphorus removal from 'Waste Water Treatment Plants effluent in developing countries Acacia hotel, Kisumu, Kenya 18th December 2017 convener: Ruud Kampf |
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Kisumu Water and |
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The program was as follows: 1. Reception of the workshop workers, including word of welcome by Joseph Obunde 2. Short introductions of the participants (name, plus organisation) 3. Introduction to waste water treatment, separation of wastes, no-mix, Biosanitation, Waterharmonica, A water life story of Ruud, with examples from around the world 4. Introduction to the three cases by Ruud Kampf 5. Three groups for the three cases 6. Presentations of the results of today 7. Planning of the future, evaluation |
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Invited were (link)
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The programme of the workshop: |
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All files can be downloaded at once as a zip-file: download pdf (ca. 500 Mb)
Part 7: Appendix, how to design a Waterharmonica, a selection of
backgrounds all kind of backgrounds, (download
pdf), more info on
www.waterharmonica.nl
.
During the workshop the attendants were caught up in the “Creative
Kisumu Waterharmonica Group” , spontaneously formed during the day. I
sincerely hope we can pick the issues, the reasons the workshop was hold
further in a “living active” atmosphere, with contributions of all
dealing with the issue in the whole city of Kisumu, and its
surroundings. |
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A personal overview of the workshop |
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The introduction started with describing an integrated approach of all
water issues applicable in the city of Kisumu. It is indeed very
important to provide good drinking water, but drinking water will end as
sewage, more drinking water gives more sewage. The reason I did dare to
come forward to this was the following observation:
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drinking water produced 35,000 m3/day:
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sewage treated in the Kisat WWTP and the Nyalende pond only 12,000 m3
per day
Thus sewage treatment is still behind at least 23,000 m3 per
day. Plus borehole water….
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Only, is the solution more sewer and more waste water treatment plants?:
yes or no, or yes
and no?
One of the main sources of nutrients and life are “human wastes”, for
everybody is that about the same, relative small amounts of faeces and
urine:
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roughly 2-5 l per person per day;
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contains nutrients (60 - 80 % of nitrogen, half of phosphorus plus
nearly all pathogens).
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around 400,000 people not connected to the Kisumu sewer systems ;
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between 720 and 2100 m3 per day black wastes.; - 10 – 40 truck could be enough to transport 120 – 350 truckloads per day
When this system is picked up cleverly then it is even possible to
tackle a big part of the medicine pollution, by separate collection of
wastes from hospitals (an adapted form of the Pharmafilter(
www.pharmafilter.nl).
When these loads would be transported to new digesters and “fertilizer
production by drying, composting, etc.”
it would not only produce fertilizer but also a considerable
amount of “green gas”.
Crucial aspects: be careful in bringing piped water into houses without
a good sewer connection ánd treatment the wastewater treatment plant. Of
course, also treatment of so
called gray wastes will be needed, that will be much easier and
will be enhanced by the need of recycled water.
Is this all a step back in time? It could be a direct leap of - Kisumu
towards a modern circular economy, like Amsterdam See for a new Amsterdam example of Reclaiming raw materials and energy from the waste water: link
The participants of the workshop became the ”Kisumu Creative Water Team
in the afternoon, when they discussed about the cases of the Workshop,
Case 1: WWTP Kisat – “realistic”, Case 2: WWTP Kisat – “dreams” and Case
3: Nyalenda ponds – “nature”.
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Case 1: WWTP Kisat – “realistic dreams”
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Case 2: Nyalenda ponds – “nature”
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Improve the WWTP Kisat with simple means
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The idea of the Waterharmonica seems to feasible for Kisat
During the workshop the
question was raised: why did we not invite the Nyanza Golf Club, the
main stake holder? During a meeting by Ruud Kampf with Samuel Okelo
Deya, just re-elected captain of the Nyanza Golf Club the conclusions
were:
The Team concluded about the Nyalende ponds:
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to see the Nyalende ponds as a part of the surroundings:
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optimize the ponds, to be done by the Kisat team
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prevent people from entering the ponds, make a good fence:
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safety for people
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health aspects, people are taking untreated waste water for farming on,
even, grabbed land
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prevent disturbance of birds on the ponds
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need for good quality water for irrigation farming and fishponds
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saving wetlands for eco-tourism
The wetland area south of Nyalende is really a green long for the city
of Kisumu, separated from the city with slums as “city fringes”.
A Waterharmonica in connection with the Nyalende ponds could be a good
safeguard and also be a good source of water for the wetland area.
Because of private ownership the plans only can be realised when for and
with local people. With Improvement of the effluents of both Kisat WWTP
and the Nyalenda ponds as a source of water. This fits very well in the
objectives of tyhe Lake Victoria Environmental Management Project, LVEMP
KENYA
For me as a convener it was a great workshop, we created a good
“Creative Water Team”. I sincerely hope we can make things rolling with
Kisumu as an example of water creativity.
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It is not about applying new technologies, it is about ideas,, proven
knowledge and combination of proven technologies, , adopted to Kisumu;
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Cooperation needed!
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“Listen to your grandparents”
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Trucked black wastes can be up-valued in both Kisat and Nyalende.
The conclusion of the workshop can be found at one of the last sheets if
Part 6: |
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And it is advisable to bring all parties together in a (Waterharmonica)
group: the Kisumu Creative Water Team |
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I really enjoyed the stay in Kisumu, not the least because of the input
of especially Joseph and the great support of Bryan Otiende of Nema,
Nairobi.
All invited persons appeared on the workshop, gave a great and positive
input, and stayed until the end, it really has been a productive day.
Or as Marthe de Graaff of VEI described it
”at
last I found time to take a look at Ruud’s slides. I think it is a nice
overview and I think it is a very nice overview and I am very curious
how they take this further. Nice to see that my search for the details
of the sewage treatment comes back (e.g. the
flow diagrams of the STP’s purges) in an overview of how whole Kisumu
and around it sanitation, nature, urban planning, etc. should pick up”. |
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Ruud Kampf |
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Ruud Kampf
Consultant nature based methods for water resue
Phone: +31 72 502 2998, mobile:+31 649 45 0214
Email:
r@rekel.nl, Skype: rekel.nl
Waterharmonica:
www.waterharmonica.nl
Stowa 2013_08:
Waterharmonicas in the Netherlands (1996-2012). Natural constructed
wetlands between well-treated waste water and usable surface water
Partner of NJUcoRICH in Eastern Africa
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