200508 IHE Poster_final

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Claudia Wendland

Dr.-Ing., claudia.wendland@hamburgwasser.de

As a civil and environmental engineer, Claudia Wendland has been active in the water and wastewater sector in Germany and abroad for over 20 years. She is working with the German water and sanitation utility HAMBURG WASSER where her focus is on water operators` partnership projects. Before, she worked with the NGO network WECF, implemented water and sanitation projects in rural areas of 20 countries in the last years and brought the experiences on EU, UNECE and international policy. She finalised her doctoral thesis at Hamburg University of Technology about “Anaerobic digestion of blackwater and kitchen refuse” as part of new sustainable sanitation concepts in 2008. As project manager in the EU project on water re-use in Mediterranean Countries (EMWater), Claudia Wendland was involved in all project activities such as the on-line trainings, the regional training and planning of the pilot plants from 2003-2007.
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Go to the profile of Anne Mojen
11 months ago

If you like to watch a 7min-video about the project "Optimization of Water Supply Using Performance Indicators" (Rwanda/Germany, 2013-2016), feel free to follow this link: https://www.facebook.com/EUDelegationRWA/videos/1106111639431394/

Go to the profile of Muhammad Tukur Bayero
11 months ago

Dear Contributors,

Thank you for sharing SUP approach and Video by Anne.

I was wondering if you could elaborate more on how you were able to achieve reduction in cost of treatment with a better water quality and improved efficiencies in say, Rwanda. What did you do differently? are you using biological treatment and using local materials that are readily available to reduce the amount of chemicals used?. For example, Moringa Oleifera has been found to be a good coagulant which may replace alum in future.

Go to the profile of Anne Mojen
11 months ago

Dear Muhammad,

Thank you for your interest in our project!

It was actually the result of good teamwork. The project approach followed two parallel lines: Optimization measures were executed in close cooperation with managerial and operational levels. In parallel the sharing of know how on water supply and efficiency strategies was supported by extensive staff trainings in Rwanda, and Germany.

In practice, we first started with a baseline assessment of pre-selected water treatment plants (WTPs), suggested by WASAC, checking the treatment process and construction (e.g. filters, piping). Then, several WTPs were selected according to relevance and optimization potentials (technical and personnel). During site visits, we discussed optimization potentials together and agreed the steps, which would be taken.

At one plant, the process itself was changed to coagulation filtration (biofiltration was in use at one plant, but the plant was not part of the optimization programme). Other measures related to structural maintenance (e.g. filter bottom, filter bed), changes in backwashing, shifting of dosing points or changes in dosing itself. I would have loved to test Moringa Oleifera, but it was not in focus. We worked with the material available, meaning, with the chemicals, which were in use already. In combination, all these measures resulted in reduction of chemical use, better water quality, and better efficiency.

And, that’s why I wrote it at the beginning – it worked out well because of good teamwork. Not only between WASAC & HAMBURG WASSER (HW) but, more important, within the teams of WASAC. The best results were achieved in the plants were the teams were working well together, were the plant managers were in good contact with their employees, and everyone was engaged. I was impressed by their discussion culture in meetings. They noticed the changes in the production – and they spoke about it together. I believe that the staff can  develop best ideas what could be done differently because, or when, they know their plant, they know the system they are working in. One of the best outcomes at one plant (the plant manager is speaking in the video) was the result of the final optimization steps taken by the plant team in the 3rd year of the project – staff from HAMBURG WASSER was not around when the plant staff developed and did the testing.

Another main part of the projects were trainings. Regarding process optimization, locations for basic theoretical trainings (as shown in the video: presentation & discussion) were chosen together. They took place at different WTPs, and some contained as well a practical part in the laboratory (reviewing practices of defining the dosing, discussing monitoring). All trainings included a plant visit, walking “through the process”, giving the opportunities to discuss different steps or presenting changes, which had been implemented or were under testing/implementation. It was on behalf of WASAC to decide who would come to which trainings, and people from different WTPs joined, not only the staff of the plant were the training was taking place. The groups were mixed: the participants had different operational responsibilities.

If I remember correctly, most of the trainings on process optimization took place in the first year of the project. The time spent together shifted more and more to discussing the optimization process. All agreed steps were documented and  implemented optimization measures were followed-up. Members of the process optimization team from HAMBURG WASSER were visiting in Rwanda about 3-4 times per year, and the visited plants were chosen according to demand – e.g. depending on the optimization steps taken, or on the results obtained.

I hope this answers your questions. I just saw that one article is still available online, it contains a short description of the WTP were the filtration was changed to coagulation filtration, which you may find interesting: http://www.eeas.europa.eu/archives/delegations/rwanda/documents/press_corner/news/20140520_1_owasupi-co-bluefacts_2014_en.pdf

If you have further questions, or would like to know more, please write again.

Kind regards

Anne