SuSanA - Forum Kunena Site Syndication Mon, 22 Dec 2014 12:02:30 +0000 Kunena 1.6 SuSanA - Forum en-gb Re: Data acquisition and field support for sanitation projects (UKZN, South Africa) - Web page development - by: ChrisBuckley The PRG web page is now available at

Over the next month additional data and videos will be added.

Enabling environment Sun, 13 Jul 2014 10:58:56 +0000
Modelling the next generation of sanitation systems - NewSan Simulator (University College London, UK) - by: luizacampos
Very interesting work done by Sharma and colleagues. It seems to contains information we have been looking for.

So yes, we can build in NewSan (Prototype) the technologies Mr Sharma's group has analysed. I will get in touch with him.

Thanks a lot.

Enabling environment Tue, 18 Feb 2014 21:01:11 +0000
Modelling the next generation of sanitation systems - NewSan Simulator (University College London, UK) - by: AquaVerde May you answer my question?

Additional is your upcoming system flexible enough, to incorporate future "new" developments like this: “Carbon is Money” From Wastewater to Energy – Exploration of Concepts ?

Detlef SCHWAGER]]>
Enabling environment Tue, 18 Feb 2014 15:52:37 +0000
Re: Modelling the next generation of sanitation systems - NewSan Simulator (University College London, UK) - by: dorothee.spuhler
Nelson from SEI asked some questions at the end of the re-recording of Luiza's presentation. As volume is quite low, we thought it would be worth to complete the write-up also with a summary of this discussion.
So, here you go…

How do you acquire the input values in order to run your simulations?

The model is based on a simple Material Flow Analysis which needs for the simulation input data and process in order to calculate output flows
Currently all the data used was collected from the literature: input concentrations as well as what happens in the process: e.g. energy consumption or production, decay of nitrogen etc.
Currently only examples were simulated based on the data from literature (e.g. the one's you have see on the diagrams in the presentations).
In the future, the model needs to be validated and calibrated. For this, case studies are needed from places were systems with similar outputs as NewSan produced are implemented. The problem is that most of the technologies, NewSan is looking at only exist at pilot scale and even data from pilot scale does vary if you scale up.

What are the Phosphorus and Nitrogen flows through the system on the slide with the UDDT?

The slide is only showing CAPEX and OPEX. But the simulator can also calculate phosphorus and nitrogen flow or any other of the currently available options (e.g. coliforms, carbon, BOD). They are calculated based on the settlement data which determines the inflows and the transformation and transportations they undergo through the systems.

Are you aware of the washcost project IRC has in the Netherlands has been carrying out?

Yes, and washcosts data was used in the in the work so far. A future collaboration would be welcome but currently, the NewSan Prototyp needs funds.
To have financial resources would help the team to keep the development going more and to validated and calibrate it.
See e.g. here for more info on washcost:


So if you have are working on the implementation of the “new generation of sanitation systems” and have a case study or data to offer to the team, especially on anaerobic digestion or biochar production, let them know...

Cheers, Dorothee]]>
Enabling environment Wed, 05 Feb 2014 15:09:16 +0000
Re: Modelling the next generation of sanitation systems - NewSan Simulator - Sankey diagrams - by: AquaVerde
If possible may you in-cooperate results and calculations by Mr. Sharma and colleagues in your project “NewSan” simulation tool? Is your coming system flexible enough to do so?

Waste to Energy, Technical and Financial Analysis, India
Technical and financial analysis for opportunities and obstacles associated with various FS to energy processing options

Although it is stated, all is based on typical Indian condition, in my educated guessing this conditions are very representative to too many places on earth.

Detlef SCHWAGER]]>
Enabling environment Wed, 05 Feb 2014 11:59:32 +0000
Re: Modelling the next generation of sanitation systems - NewSan Simulator - Sankey diagrams - by: masch What sort of experience do others have with the use of Sankey diagrams?

Many regards


Dr. Manfred Schütze
ifak - Institut fuer Automation und Kommunikation e.V. Magdeburg
Wasser und Energie / Water and Energy / Agua y Energía
Werner-Heisenberg-Str. 1
39106 Magdeburg
Tel.: +49-391-9901470, -9901481
Fax: +49-391-9901590
E-Mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Enabling environment Wed, 05 Feb 2014 11:17:37 +0000
Re: Modelling the next generation of sanitation systems - NewSan Simulator (University College London, UK) - by: dorothee.spuhler
„Does the thickness of the arrows have any significance?“
Manfred explained that the results are displayed in “Sankey” diagrams. This means that the width of the arrows is shown proportionally to the flow quantity (nutrients, energy, etc.)]]>
Enabling environment Wed, 05 Feb 2014 11:12:34 +0000
Re: Modelling the next generation of sanitation systems - NewSan Simulator (University College London, UK) - by: dorothee.spuhler
The recording of the presentation of Luiza from our webinar number 5 on "Resource recovery and reuse", with the highest number of participants so far, is now available.

Due to the technical problems because of a new subscription and server with Adobe Connect, the recording of the entire webinar is not available. But Luiza was so kind to re-record the presentation and this is the one you can watch under the link below.
Additionally to that, we also did a short write up of the the main issues discussed during the webinar based on the questions of the audience.
Feel free to ask them any other questions here on the forum!


Modeling the next generation of sanitation systems

University College London, UCL, Luiza Campos

Watch the video

Or here:

Powerpoint slides from her presentation are available in the attached file below.

Short description of the project
This project developed a draft version of a simulation tool to enable local decision makers to assess the implications of adopting alternative sanitation strategies at scale. It is based on the simulation of material and resource fluxes through different sanitation systems along the entire sanitation chain, which are built by the user based on processes for the user interface, conveyance/collection, storage and treatment and reuse or recharge. The simulation methodology has been already applied successfully by ifak in several networked sanitation contexts in developing countries. The NewSan Prototype simulator has extended the concept for non-networked systems. The model outputs are, at present, the main energy and nutrients balances. However, other criteria can be added easily. This should help to demonstrate systems which have increased commercial viability due to waste reuse/nutrients recovery. The flexibility of the simulator allows also to include additional modules for sanitation technologies developed in the future.

Issues and questions raised during the webinar discussion with participants:

1) Processes/technologies that could be included in the simulations:
Several people asked if additional or new processes could be included in the overall system modeling tool (e.g. the ones from the Gates projects). Manfred from ifak said yes and he has already made available a questionnaire for this (now posted on the forum here:
Steve Mecca asked precisely how to do to simulate a sanitation system based on his micro-flush toilet with NewSan:
Luiza said that she could offer a project for UCL students to develop the building box of Steve’s system in order to model/simulate with Steve’s system.

2) Software requirements:
NewSan Prototype Simulator is a prototype version and download/use is not available yet to the general public (current version is called "NewSan Prototype Simulator"). However, anyone interested in its later application is invited to contact the developers.
The “NewSan Prototype Simulator” does not need any commercial third-party software. It uses only Microsoft .NET Framework 4 (which is preinstalled on most newer Windows computers; otherwise it can be downloaded free of charge from Microsoft's webpage).
The aim of the Gates founded project was the development of a draft - and that has been achieved. Obviously, it would be nice to further develop it and to improve and to extend its facilities. This, however, would require additional funding (as ifak's funds within this Gates project have long run out).
Suggestions for extending/improving the simulator are most welcome. Those suggestions directed at the simulator program itself (which was developed by ifak) could also be sent directly to ifak ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it ) or write them here on the forum

3) Validation of the model/tool:
Proper validation hasn’t been done yet but some (crude) plausibility check has been done for the model in the Durban case.
NewSan’s team is hoping to get additional funding to support the proper calibration and validation of the tool: the validation would require large sets of appropriate data.

4) A question was raised if Kai Udert from the Vuna project could use this tool:
He said at the moment no plans, also he would need a dynamic model (and NewSan Prototype Simulator is a steady-state model). Manfred from ifak commented to Kai that extensions of the simulator to allow also fully dynamic simulation could indeed be thought of. These are, however, beyond the present scope of NewSan Prototype simulator. If Kai or somebody else should be interested in including fully dynamic simulation, contact ifak ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it ) or write about it here on the forum.]]>
Enabling environment Mon, 03 Feb 2014 11:38:24 +0000
Photos about research facilities at PRG group (University KwaZulu-Natal, Durban) - by: SusanMercer
I would like to provide some further information on the services and activities offered by the University of the KwaZulu-Natal (UKZN) through the Pollution Research Group (PRG) together with eThekwini Water and Sanitation (EWS) under our BMGF grant.

The eThekwini Municipality in Durban, South Africa is home to a wide variety of sanitation technologies and is therefore an ideal environment in which to conduct research into the optimization of sanitation services. EWS is responsible for the provision of water and sanitation services to more than 3.7 million people within the eThekwini municipal boundaries, which includes both urban and rural areas.

As of November 2013, there are in the region of 35 000 ventilated improved pit latrines (VIPs), 85 000 urine diversion dehydration toilets (UDDTs) and 520 community ablution blocks (CABs). A research facility has recently been established at Newlands Mashu (north of Durban) in order to investigate the use of a decentralized wastewater treatment system and the reuse of treated effluent for agricultural purposes; the processing of urine to produce struvite; and the optimization of UDDT design. EWS undertakes to empty the VIP latrines on a 5-year cycle and has developed a pelletizing machine (LaDePa) to process this waste.

As outlined in my previous post, we are able to undertake various laboratory analyses and provide access to the above on-site sanitation systems for sampling, analysis and field testing of prototypes. Other Grantees are welcome to take advantage of the data results that we have collated to date, as well as to request further data sets, or visit Durban to experience the “Sanitation Tour” and spend some time in our laboratories and in the field.

To date, we have provided assistance to the following Grantees, either through provision of data, collaboration on research projects, field testing or hosting representatives in our laboratories:
• Beaumont Design
• University of Toronto
• Delft University of Technology
• Research Triangle Institute
• Oklahoma State University
• Plymouth Marine Laboratory
• Santec
• North Carolina State University
• University of the West of England, Bristol
• Duke University
• Swedish University of Agricultural Sciences
• Asian Institute of Technology
• Cranfield University
• University of Colorado
• Janicki Industries
• Climate Foundation
• Cranfield University
• Swiss Federal Institute of Aquatic Science and Technology (EAWAG)
• University of Toronto
• Sanergy (Nairobi)
• University College London

Below are some pictures providing an indication of the various types of sanitation systems in eThekwini, as well as some photographs of our laboratory facilities. Further information is provided in the two attached documents: Sanitation Tour (which provides an overview of the types of sites that can be visited) and Equipment Portfolio (providing a more detailed description of the laboratory equipment).

Figure 1: Sanitation systems in eThekwini (clockwise from top left): LaDePa pelletizer; VIP emptying; water reuse for agriculture; UDDT and old pit latrine; community ablution blocks; emptying of UDDT vault

Figure 2: View of the Newlands Mashu Research facility

Figure 3: Inside the basement laboratory at the Pollution Research Group

Figure 4: Laboratory-scale pelletiser machine in the PRG laboratories

Figure 5: Staff and students in the PRG

We are also in the process of launching a web site for the PRG, but in the meantime you can access our University page through the following link:

Chris Buckley (UKZN-PRG), Tina Velkushanova (UKZN-PRG), Teddy Gounden (EWS) and myself (UKZN-PRG) will be attending the BMGF Toilet Fair in Delhi (India) in March (20-22 March), so please come and visit our stand to learn more about what we can offer if you are also at that fair.

Kind regards
Enabling environment Sat, 25 Jan 2014 08:18:44 +0000
Re: Questionnaire for modelling of new sanitation systems - by: luizacampos
Most of the cost (capex and opex) equations for technologies used in NewSan Prototype was taken from SANEX. For others the cost have been approximately estimated from existing case studies or sanitation projects (from literature). For energy it was the same, values and equations from literature. However, these information are not always available.

For example we need at the moment information on CAPEX and OPEX for both anaerobic digestion (one and 2-phase CSTR) and pyrolysis and hydrothermal carbonization. If you guys have any data on these please contact me ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it ).

The simulator is based on MMFA but with further development (in future work), process dynamic can be included.

Best wishes,

Enabling environment Wed, 22 Jan 2014 23:30:57 +0000
Re: Questionnaire for modelling of new sanitation systems - by: dorothee.spuhler
Thank you for your interesting presentation yesterday and the questionnaire.

Having a look at it, I was surprised by the little information you require!

You mentioned yesterday that you can model not only material fluxes (ie. nutrients, water) but also energy and capex/opex. With what data are you simulating those flows along the sanitation chain when not from the functional units? What models do you use to determine the capex/opex and energy flows? What data would you require for this (you mention that you have a “ Lack of costs and energy data”)
How much data do you actually need to validate the simulator? Does NewSan allow for Monte Carlo simulation for uncertainty analysis?
You also mentioned dynamic modeling but could not find any information about it in the PPT: can you give as some more information to what extend this is possible?

For those who were not online with us yesterday: find the presentation from yesterday below (longer version).
Enabling environment Wed, 22 Jan 2014 10:04:40 +0000
Questionnaire for modelling of new sanitation systems - by: masch
please find attached below the questionnaire for sanitation systems suggested for inclusion in new sanitation systems modelling. Let me know if you have any questions or suggestions. (I mentioned it today in the webinar 5, the recording will be available in the next few days, please see here:

Within this project, outlined in this thread above we are developing the “NewSan” simulation tool to model resource fluxes of next generation sanitation systems. This will assist city planners in their decisions about implementations of sanitation strategies.
We need your help! If you are developing new, promising sanitation concepts, we would like to include your technology/approach as a module in the “NewSan” simulator. In order to do this, we  require the information shown in the attached questionnaire.

Many regards


Dr. Manfred Schütze
ifak - Institut fuer Automation und Kommunikation e.V. Magdeburg
Wasser und Energie / Water and Energy / Agua y Energía
Werner-Heisenberg-Str. 1
39106 Magdeburg

Enabling environment Tue, 21 Jan 2014 20:11:13 +0000
Webinar: Innovation in resource recovery and reuse - by: luizacampos
If you are interested in resource recovery/reuse and want to know how NewSan can help you with this, don't miss the next Webinar!!

Looking forward to seeing you there.


Tuesday 21 January 2014, 16:30 - 17:15
(CET - Central European Time; use this time converter if you are unsure of the time difference to your location:

Topic: "Innovation in resource recovery and reuse"


16:30 Recording starts

VUNA - Valorisation of Urine Nutrients in Africa
By Kai Udert, EAWAG, Switzerland - the project is taking place mainly in South Africa
Previous discussion about it on the forum:

Structuring of the fecal sludge market for the benefit of poor households in Dakar, Senegal
By Mbaye Mbeguere, Senegal National Sanitation Utility, ONAS, Senegal
Previous discussion about it on the forum: please scrol up

Modeling the next generation of sanitation systems
By Luiza Campos, University College London, UK
Previous discussion about it on the forum: College London-uk

17:15 End of webinar

For more information on how to participate, see in this posting here on the forum:]]>
Enabling environment Thu, 02 Jan 2014 15:56:59 +0000