Solar Sanitation for Fecal Sludge Management (Sanivation - upcoming pilot in Kakuma refugee camp, Kenya)

  • AFoote
  • AFoote's Avatar Topic Author
  • Regular forum user
  • Innovating sanitation solutions to meet demand from BOP
  • Posts: 16
  • Karma: 3
  • Likes received: 8

Solar Sanitation for Fecal Sludge Management (Sanivation - upcoming pilot in Kakuma refugee camp, Kenya)

Hi SUSANA Community. I am looking to write a paper on the feasibility of using solar energy to treat fecal sludge. Could you share your experience and/or knowledge of projects in this area?

Here are the resources I was able to dig up. Please add an opinions and other solutions you have seen.


Active Solar Drying of Waste Water Sludge

Fate of Pathogens in Sludge Sand Drying Beds at Qateef, Khobar and Dammam: A Case Study

Solar Biosolids Drying:  Harnessing the Power of the Sun to Produce Dry and Safe Biosolids

APPLICATION OF FLAT PLATE SOLAR COLLECTOR FOR THERMAL DISINFECTION OF WASTEWATER EFFLUENTS

[url=Increase%20the%20Efficiency%20of%20Conventional%20Sand%20Drying%20Beds%20by%20using%20Intensive%20Solar%20%0D%0AEnergy:%20A%20case%20study%20from%20Jordan]Increase the Efficiency of Conventional Sand Drying Beds by using Intensive Solar Energy: A case study from Jordan[/url]

OPERACIONALIZAÇÃO DAS ALTERNATIVAS DE DESINFECÇÃO E SECAGEM DE LODO DIGERIDO ANAERÓBICAMENTE

SUSANA member Daneric is working on hot water from solar panels heat the slurry to 70C for about an hour to remove pathogens for a high school in Kenya. Design attached.

I am also currently working on designing solar concentrators to treat fecal sludge.

Cheers,
Andrew

Andrew Foote
Co-founder
www.sanivation.com

This message has an attachment file.
Please log in or register to see it.

You need to login to reply
  • christian.rieck
  • christian.rieck's Avatar
  • Moderator
  • Posts: 119
  • Karma: 7
  • Likes received: 42

Re: Solar Sanitation for Fecal Sludge Management

Dear Andrew,

Apart from simple sludge drying beds I have not seen anything else working. Though it seems like a promising way to treat the sludge, it requires a good operation and maintenance system. What kind of incentives do you plan for o&m. What do you want to do with the treated sludge?

Cheers
Christian

GIZ Uganda
Reform of the Urban Water and Sanitation Sector (RUWASS)
This email address is being protected from spambots. You need JavaScript enabled to view it.
You need to login to reply
  • mwink
  • mwink's Avatar
  • Long-term forum user
  • Posts: 42
  • Karma: 3
  • Likes received: 14

Re: Solar Sanitation for Fecal Sludge Management

Dear Andrew,

the colleagues at the University of Bonn did some stuff on solar drying in their Vietnamese project. But I am not sure if just for urine or also for feacal sludge.

But check it out yourself. Here the link to their final report:
www.susana.org/lang-en/library?view=ccbktypeitem&type=2&id=1154

Yours, Martina.

Research unit Water infrastructure and risk analyses
Institute for Social-Ecological Research (ISOE)
Frankfurt, Germany

winker[AT]isoe.de
www.isoe.de
www.saniresch.de
You need to login to reply
  • susu
  • susu's Avatar
  • Regular forum user
  • Posts: 6
  • Likes received: 1

Re: Solar Sanitation for Fecal Sludge Management

Hello Andrew,

I am a master student in environmental engineering. I am also interested in fecal sludge treatment by solar drying as my thesis. But I don't know yet, it would be feasible or tangible solution for the large scale treatment or in reality. I has just started reviewing the literature. I wonder if you have done "a paper on the feasibility of using solar energy to treat fecal sludge", and you could share me that paper.

I am also looking forward any idea on the topic.

Thank you

Best regards,
Su Su
You need to login to reply
  • dorothee.spuhler
  • dorothee.spuhler's Avatar
  • Moderator
  • Water Engineer, Sustainable Sanitation and Water Management (SSWM) - Co-Lead of WG1 - One of the forum moderators
  • Posts: 233
  • Karma: 10
  • Likes received: 80

Re: Solar Sanitation for Fecal Sludge Management

Hi Andrew

I have been looking at such option as well here in Switzerland. For a project in the city of bern, I looked at geotubes, kind of very big filter bags ( www.tencate.com ) as an option to safe place; but it would probably require the addition of a coagulant.
Some work has been done in mountain huts in Europe, e.g.:
www.sanbox.info
www.unibw.de/ifw/swa/Forschungsvorhaben/...lung/schlammtrockner
For a projefe place; but it would probably require the addition of a coagulant.
On drying beds you can also find some information, documents and links here: www.sswm.info/category/implementation-to...reatment/drying-beds
You may also find some articles on the homepage of eawag/sandec (e.g. www.eawag.ch/forschung/sandec/gruppen/EWM/index_EN ) they have and are doing a lo of work on drying bed, for instance in Burkina Faso.
Hope this helps somehow.

Dorothee

Dorothee Spuhler
WG1 Co-lead
Working with Sustainable Sanitation and Water Management (SSWM) based at seecon, Switzerland
www.sswm.info / www.seecon.ch
This email address is being protected from spambots. You need JavaScript enabled to view it.
You need to login to reply
  • joeturner
  • joeturner's Avatar
  • Long-term forum user
  • Posts: 654
  • Karma: 22
  • Likes received: 153

Re: Solar Sanitation for Fecal Sludge Management

I recently came across a company called sanivation , which is using a solar concentrator to cook sludge. Seems to be similar in design to solar cookers, I don't know whether it is at all scalable.
You need to login to reply
  • AFoote
  • AFoote's Avatar Topic Author
  • Regular forum user
  • Innovating sanitation solutions to meet demand from BOP
  • Posts: 16
  • Karma: 3
  • Likes received: 8

Re: Solar Sanitation for Fecal Sludge Management

Hi all,

Thank you for all the replies and suggestions! Su Su, I have not come across anything else besides what I have listed earlier in the thread. We are working on finalizing one our first papers. Also Joeturner, Sanivation seems cool, although I am a bit biased since I am one of the cofounders.

Scalability is a great question and is something we are working through right now with a small pilot of our technology in Kenya. Drying beds also seem very attractive, particularly with the approach that www.waste-enterprisers.com/our-businesses/ is taking.

SuSu, I'd love to help advise you on your project. Is there a specific question you are looking to tackle or a resource I can help you find? The more research done on solar sanitation the better!

all the best,
Andrew

Andrew Foote
Co-founder
www.sanivation.com
You need to login to reply
  • joeturner
  • joeturner's Avatar
  • Long-term forum user
  • Posts: 654
  • Karma: 22
  • Likes received: 153

Re: Solar Sanitation for Fecal Sludge Management

Ah fair enough, I fell into that one didn't I?

I think the idea is reasonable, although I'm wondering if it would require too much equipment and knowledge to operate on a microscale, and I don't know enough about solar cooking to know how big these things can be constructed.

On a mesoscale, it would be nice to have some kind of continuous belt system avoiding a lot of handling. I am no engineer though, I'm not sure how that could be constructed.

Incidentally, my view is that you ideally want to mechanically dry sludge rather than trying to airdry it as you'll lose a lot of the nitrogen during the first few hours, particularly when it is really wet.
You need to login to reply
  • susu
  • susu's Avatar
  • Regular forum user
  • Posts: 6
  • Likes received: 1

Re: Solar Sanitation for Fecal Sludge Management

Hello Andrew,

Thanks for your reply. I am interested in the fecal sludge drying by using conventional sludge drying bed with solar water heating system. The concept is that I will use hot water pipe in the sludge drying bed not only to help the evaoporation rate increased( as it is the main operation step in sludge drying bed) but also to disinfect the sludge with the temperature (around 50-60C).

I would like to set up lab scale experimental unit(drying bed with heated water pipe) in my university, and try to analyze the finished biosolid. But the problem what I am thinking is how I can get the solar water heater- I have to design myself or I have to buy (it will be costly for my experiment). I am not quite sure, if the energy department from our university could provide me with that solar collecter because our univeristy was flooded last year.

I would wonder if you could suggest me on this idea. Looking forward to you!

Best regards,
Su Su
You need to login to reply
  • sahidul93
  • sahidul93's Avatar
  • Regular forum user
  • Better Environment, Better Life
  • Posts: 16
  • Likes received: 2

Re: Solar Sanitation for Fecal Sludge Management

Yesterday I visited such treatment plant at Meherpur Pourashava, Meherpur, Bangladesh. There was no research, but as a rumor of poisonous bacteria, the plant is going to stopped. The farmers do not use it as manure.

Engr.Md.Sahidul Islam
Advisor, WASH
SNV-Netherlands Development Organization
Khulna, Bangladesh
You need to login to reply
  • rahulingle
  • rahulingle's Avatar
  • Moderator
  • Posts: 107
  • Karma: 2
  • Likes received: 18

Re: Solar Sanitation for Fecal Sludge Management

I had seen a picture of a solar drier constructed by NGO FIN in the coastal areas of southern Indian in their presentation (see slide 7) www.friend-in-need.org/__media/friend-in-need-may-2009.pdf

Contact: Shyama Ramani (see email address in the presentation) for more information.

Best regards,

Rahul Ingle
You need to login to reply
  • AFoote
  • AFoote's Avatar Topic Author
  • Regular forum user
  • Innovating sanitation solutions to meet demand from BOP
  • Posts: 16
  • Karma: 3
  • Likes received: 8

Re: Solar Sanitation for Fecal Sludge Management

Hi all,

We've been very busy working on toilets, treatment, and transformation. Thank you to everyone who has given us inputs along the way.

We're very exited about our upcoming pilot in Kakuma refugee camp where we get an opportunity to pilot an entire alternative sanitation system in the camp from mobile toilets, to solar treatment, and our re-use method of making briquettes from treated human waste. With support we plan on scaling our work and bio-briquette production in Naivsaha.

Below is a link to our recent newsletter that goes into more detail (including pretty pictures!) if you're interested. Thanks for all your support!

us4.campaign-archive2.com/?u=d78bf2d0118...bcb21b&id=b7b2e12730

Pictures such as these two:




Andrew Foote
Co-founder
www.sanivation.com
You need to login to reply
Share this thread:
Time to create page: 0.787 seconds