SuSanA - Forum Kunena Site Syndication http://forum.susana.org/ Sun, 11 Dec 2016 13:49:04 +0000 Kunena 1.6 http://forum.susana.org/components/com_kunena/template/default/images/icons/rss.png SuSanA - Forum http://forum.susana.org/ en-gb Progress on EarthAuger toilet installation in South Africa - by: ekellogg http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19573-progress-on-earthauger-toilet-installation-in-south-africa#19573 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19573-progress-on-earthauger-toilet-installation-in-south-africa#19573 www.earthauger.org is a low cost composting urine diverting toilet. EarthAuger was approved earlier this year for installation in all locations in peri-urban Dakar, Senegal by the Comité Technique National. EarthAuger has also been approved recently for an installation of 200 units by the South African government in a rural area near the town of Ida, a short distance from Queenstown in the eastern part of South Africa. The attached report details the status of the project as of late October 2016. We look forward to the operation and further evaluation of these EarthAuger toilets in the next few months.

The report also describes a prospective retrofit EarthAuger installation project at the Kleinbooi school in the same vicinity. I urge you to subsribe to SuSanA so that you can log in and view the attached report.]]>
Urine diversion systems (includes UDDT and UD flush toilet) Tue, 15 Nov 2016 22:18:43 +0000
Re: Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: kifle1adama http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19510 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19510
Hope your project is going good . I have same moled you can use fiber glass . They are easy to install, easy to casting and drains away the urine. Here in Adama Ethiopia +251911797053]]>
Urine diversion systems (includes UDDT and UD flush toilet) Fri, 04 Nov 2016 10:46:41 +0000
Re: Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: Angus http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19402 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19402
Controversially, we aren't putting a vent pipe on the first round of UDDTs. This is because normally for any type of latrine the vent pipe is the first thing to go wrong, and I think that in this hot climate the faeces will be able to dry through the drop holes and through gaps in the structure. If it seems to be an issue we will retrofit them.

We haven't been able to eliminate the steps, only reduce them. Putting the toilets uphill is a nice idea, but most of the area we are working in isn't steep enough to mean there are no steps required. We are going house to house looking for people with disabilities, so if anybody can't use the steps then I will think of a specific solution for them.

Regarding the 'user interface', I would love to use a nice plastic insert but there are none available locally and it's not possible to import anything. I can't see why would round drop holes be easier to clean? I will have a hunt in the market again for anything that would be suitable for catching the urine.

The UDDTs are one per household, so I'm expecting the filling rate to be normal. The tiger worms are unrelated - we building worm toilets separately, and will see which works best. The Arboloo is great, and is similar to what is happening here - sturdy concrete slabs that are moved when the latrine is full. The reason for using the UDDTs and worm toilets though is that they are more suitable when the ground conditions aren't good. A lot of UDDTs were build in Dollo Ado, Ethiopia, where the ground was rocky, and here in Gambella there is black cotton soil which means that normal latrines are at risk of collapsing.

Angus]]>
Urine diversion systems (includes UDDT and UD flush toilet) Mon, 24 Oct 2016 14:20:16 +0000
Re: Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: bitwire2010 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19392 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19392
Hope your project is moving on smoothly. This is Arnold here in Uganda. I would propose that you use plastic pans. They are easy to install, easy to clean and drains away the urine. Here in Uganda it costs around USD 15.

For the stairs I think they can be avoided if one locates the UDDT on the slopping side. You can also use ramp instead of stairs to cater for the elderly and the disabled.

Attached a few photos I can share with you.






Arnold Asiimwe]]>
Urine diversion systems (includes UDDT and UD flush toilet) Mon, 24 Oct 2016 06:14:34 +0000
Re: Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: canaday http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19382 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19382
I agree with Elisabeth that it is great to avoid or minimize the steps. Plus you are working in Ethiopia, not here in the Amazon, so the water table is likely very deep in the ground and flooding is not likely to happen.

I am sorry to say that I have trouble understanding your plan for the squat slab, but I would nonetheless like to offer the following comments:
-- Round drop holes for feces would be easier to keep clean. These could even be formed with short sections of PVC pipe and thus be even easier to keep clean.
-- If the urine basin is to be molded individually in concrete, it would be hard to clean and it would absorb some percentage of urine and thus produce odors. The plastic funnel that JKM mentions might be a great option.
-- This seems to be a 2-chambered UDDT, so how do the Tiger Worms fit in?
-- Since this is for a refugee camp, it seems the toilets would receive a lot of use and each chamber may likely fill before 6 months has passed and proper treatment would not have time to occur, unless the chambers are very large. In any case, the amount of use would likely be unpredictable, thus a 1-chambered UDDT with interchangeable containers may be preferable. These containers could be woven, polypropylene sacks in which rice, flour and other foods come to the camp; they can be held open on plastic bins or woven baskets. Filled sacks could be stored in a shed that works as a solar oven, or they could be buried in the ground for over a year.

Have you ruled out the ArborLoo? I think that would be a great option for there, since no one has to worry about urine separation and no one ever comes in contact with fresh feces or even decomposed feces, just the delicious fruits on the trees. I can imagine teams of refugee men building them and teams of teenagers digging the holes, relocating them and planting trees. If cement floors are done, these could be round and rolled from site to site. The privacy structure could be separate and lightweight.

Some of these ideas can be seen on inodoroseco.blogspot.com

Please keep us informed.

Best wishes,
Chris Canaday]]>
Urine diversion systems (includes UDDT and UD flush toilet) Sat, 22 Oct 2016 01:32:51 +0000
Re: Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: muench http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19378 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19378
I really like your plan to build UDDTs without stairs. So many times I've seen UDDTs with steep and narrow stairs and wondered "is this really a good idea? How about the elderly and people with disabilities?!".
My gut feeling is that having the vaults below ground wouldn't be that detrimental to drying. Wouldn't most of the drying be influenced rather by the correct vent pipe arrangement and - more importantly - by users taking care of not letting urine enter the faeces vault? (provided you can ensure that no rainwater or flood water enters your vaults)

Also, I remember the UDDTs built in the Durban area used the slope of the ground to do away with stairs but still have the vaults mostly above ground. The user enters the toilet at the higher part of the slope and the access doors is at the lower part of the sloping ground. That's if the area is sloping a bit (see case study from 2011 here: www.susana.org/en/resources/case-studies/details/791 and more documents in SuSanA library can be found by using the search term eThekwini).

Would be great if someone from EnviroSystems in South Africa could also comment. I will alert Jacques to this thread.

Please do let us know how you get on with those UDDTs in Ethiopia.

Cheers,
Elisabeth]]>
Urine diversion systems (includes UDDT and UD flush toilet) Fri, 21 Oct 2016 14:48:51 +0000
Re: Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: Angus http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19377 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19377 http://www.worldweatheronline.com/gambel...er-averages//et.aspx

Therefore, I think they will be ok slightly buried.

Thanks for the advice - I would never have thought of that myself.

Angus]]>
Urine diversion systems (includes UDDT and UD flush toilet) Fri, 21 Oct 2016 14:02:10 +0000
Re: Request for advice on UDDT slab design - by: JKMakowka http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19371 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19371 Urine diversion systems (includes UDDT and UD flush toilet) Fri, 21 Oct 2016 01:29:52 +0000 Re: Request for advice on UDDT slab design - by: Angus http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19363 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19363
It has been suggested this might reduce the effectiveness of the drying inside the vault. Does anybody have any experience of vaults that are sunk below ground - did it make any difference to the drying?

Thanks again,

Angus]]>
Urine diversion systems (includes UDDT and UD flush toilet) Thu, 20 Oct 2016 07:54:58 +0000
Re: Request for advice on UDDT slab design - by: Angus http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19353 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19353
I think we will have to stick to using cement for now!

Angus]]>
Urine diversion systems (includes UDDT and UD flush toilet) Wed, 19 Oct 2016 08:50:40 +0000
Re: Request for advice on UDDT slab design - by: daymaker http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19291 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19291
If you did want to form the urine pot from galvanized sheet steel, I can convert this shape into a flat pattern for you, with fold lines and instructions. I think it wouldn't last forever, as the urine would eat away the steel, but I think it would last at least a couple of years?

Let me know,
Lauren]]>
Urine diversion systems (includes UDDT and UD flush toilet) Thu, 13 Oct 2016 02:22:26 +0000
Re: Request for advice on UDDT slab design - by: JKMakowka http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19084 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19084 But it might be difficult to procure sufficiently sized ones. Maybe one could improvise something out of a plain galvanised iron sheet?]]> Urine diversion systems (includes UDDT and UD flush toilet) Wed, 21 Sep 2016 10:52:39 +0000 Request for advice on UDDT slab design - and drying in vaults that are below ground? - by: Angus http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19074 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19074-request-for-advice-on-uddt-slab-design-and-drying-in-vaults-that-are-below-ground#19074
I'm working on a project in Gambella, Ethiopia, to install UDDT and Tiger Worm toilets into a refugee camp as a more sustainable solution than building and rebuilding pit latrines.

I'm looking for advice regarding the slab. At the moment I'm using a design used successfully elsewhere in Ethiopia. I've attached a drawing of it to this post.
It gives a nice end result but is a little complicated to make, with a urine pot having to be cast separately. We need to make a lot of toilets quickly so any improvements to the design which can aid this, whilst still giving a good finish, are welcome.

Does anybody on this forum have any good ideas for any improvements on this design?

Thank you!

Angus]]>
Urine diversion systems (includes UDDT and UD flush toilet) Tue, 20 Sep 2016 21:02:55 +0000
Estimation of Ascaris lumbricoides egg inactivation by free ammonia treatment of ash-amended UDDT vault products using stored urine in Uganda - by: sergas http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19033-estimation-of-ascaris-lumbricoides-egg-inactivation-by-free-ammonia-treatment-of-ash-amended-uddt-vault-products-using-stored-urine-in-uganda#19033 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/19033-estimation-of-ascaris-lumbricoides-egg-inactivation-by-free-ammonia-treatment-of-ash-amended-uddt-vault-products-using-stored-urine-in-uganda#19033
We have recently published an article in the IWA Journal of Water, Sanitation, and Hygiene for Development that readers of this forum may find interesting. It concerns the treatment of pathogens in the recovered vault products in urine-diverting dry toilets in a primary school setting in the context of Uganda. The research was conducted while the primary author, John Trimmer, was serving as an environmental health engineer with the United States Peace Corps Volunteer in the town of Kalisizo (located in Rakai District, in southern Uganda), and it formed the basis for his Master’s Thesis, completed at the University of South Florida, which can be found here: scholarcommons.usf.edu/etd/5834/

The work would not have been possible without the assistance of colleagues at Brick by Brick Uganda, and social scientists from the Rakai Health Sciences Program. Titles, abstracts, and links to the article are included in the attachment. I hope you find it interesting!

Sincerely,

John Trimmer, Sarina Ergas, and James Mihelcic
University of South Florida, Tampa]]>
Urine diversion systems (includes UDDT and UD flush toilet) Sun, 18 Sep 2016 19:54:47 +0000
Resorce recovery from UDDT - by: kifle1adama http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/15765-uddt-in-adama-ethiopia-start-giving-service-reusing-of-human-waste-as-fertilizer#18781 http://forum.susana.org/component/kunena/34-urine-diversion-systems-includes-uddt-and-ud-flush-toilet/15765-uddt-in-adama-ethiopia-start-giving-service-reusing-of-human-waste-as-fertilizer#18781 ROSSA project Holand water bored helped us to construct long term 40,000 liter storage.
beside this I need struvite reactor design to extract phosphorus for recovery.
resorce recovery from the urine for 20,000 liter of urine. I am looking forward to hear from you ?

Kifle
Ethiopia]]>
Urine diversion systems (includes UDDT and UD flush toilet) Fri, 19 Aug 2016 06:07:11 +0000