SuSanA - Forum Kunena Site Syndication Sat, 25 Apr 2015 19:47:15 +0000 Kunena 1.6 SuSanA - Forum en-gb Re: Training sessions with pit emptiers in Mombasa, Kenya, using the Gulper: training materials we might use in our trainings? - and incentives - by: rsklar
Thank you for your questions. Incentive schemes were designed to encourage sludge disposal at future site of the waste-to-fuel plant as opposed to hapazardly in the community. Emptiers in the treatment group received the opportunity to take advantage of two incentive programs: 1) sludge pick-up from a focal point in the community or 2) sludge drop-off dropping at the plant in exchange for a cash reward on a per volume basis. All transportation costs were paid for by Pivot during the trial period. All emptiers in the treatment cohorts were entitled to use equipment provided by pivot such as 50 gallon barrels and PPE (rubber boots, rubber gloves, protective eyewear, respirators, coveralls, and rubber jumpsuits) and stored in "sanistations" in the community. Incentive one, sludge pick-up from a focal point, was chosen in 21 of 22 empties that took place over the course of the trial. It was more feasible for the emptiers as most didn't have access to a vehicle to use for drop-offs.

Hope that answers your questions. I am very happy to share my photographs with the SusanA community on the flickr database. I am happy to provide the images in their original resolution.

Faecal sludge transport Wed, 22 Apr 2015 20:03:24 +0000
Re: Training sessions with pit emptiers in Mombasa, Kenya, using the Gulper: training materials we might use in our trainings? - and incentives - by: muench
Thanks for posting your presentation. It's a pity the video of your presentation is not yet available but I have heard that they are coming soon now (sneak preview:

Just based on the powerpoint slides, I couldn't quite understand which incentives exactly you offered? And which incentives worked the best? Was it mainly just about providing personal protective equipment (but how would that be an incentive to deliver the fecal sludge at the designated collection point?)?

I found it interesting that you listed these three costs of the pit emptiers:
  1. Alcohol (to make the work bearable!)
  2. Bribes (to bribe local leaders!)
  3. Chemicals (to "disinfect" the sludge - which chemicals do they use? Is this something you'd discourage in future as it could interfere with reuse options if you have nasty chemicals in the fecal sludge?)

And finally, I would like to ask you about your pit emptying photos. Would you be willing to make them available in the SuSanA flickr database? We are always after good photos showing the grim realities of dealing with fecal sludge...
You see other photos from Kenya, which Doreen Mbalo had provided in the past, here:

Faecal sludge transport Tue, 14 Apr 2015 10:06:46 +0000
Re: Comparison field tests: Equipment for emptying and transporting difficult pit latrine sludge in Blantyre, Malawi - WASTE - by: hajo
I also had the idea to fludise pit sludge with a high pressure water sprayer (KAERCHER) to make it pumpable and I am delighted to see somebody has turned the idea into action and tested it.

My next step would be to see whether I can filter the spray/pump water on site, 'recycle' and re-use it in order to reduce the quantitiy of water I have to transport to and from site. In large the technique exists in MUELLER sludge tankers (see )which will be too big to suit to your equipment.

But there may be a nano-filter technique which may provide a similar service. Is there somebody on the forum who can provide more insight into the possible application of such technique? I know the BLUE DIVERSION of EAWAG is also using filter membranes for water treatment. We are not looking at production of drinking water but only bringing the water to a condition where it can be re-used for spraying without blocking the nozzles.

Another advantage of the on-site filtration would be the de-watering of the sludge to a condition where it can be fed into a LADEPA plant, which requires 30-35% solid content (limits still to be confirmed with EWS in eThekwini).

The Fecal Sludge Omni-Ingestor (FSOI) suite of technologies for fecal sludge emptying and transport (contract by BMGF, see posting #8298 by Elisabeth von Muench)seems to go into the direction of de-watering the sludge as well. Maybe we can learn something from them further developing your system.

I am keen to find a professional and more effective way to empty pits beyound using shovel and gulper. With thousands of pits in every African town it can still provide decent work for people and hopefully a sustainable service chain to customers.

ciao, Hajo]]>
Faecal sludge transport Mon, 30 Mar 2015 13:51:08 +0000
Comparison field tests: Equipment for emptying and transporting difficult pit latrine sludge in Blantyre, Malawi - WASTE - by: WASTE
The equipment tested was: Vacutug, Diaphragm Pump and the ROM. In the lead of this operation, Joseph DeGabriele presented his findings during the FSM3 conference in Hanoi this year.

The ROM came the best and together with WASTE developed a Mobile Desluging Unit, optimised for difficult pit's, which is already in production.

For the presentation see:

For a short movie about the Mobile Desludging Unit of ROM: ]]>
Faecal sludge transport Fri, 27 Mar 2015 07:29:09 +0000
Re: The excrevator (power auger) to empty pits (North Carolina State University, USA) - now field testing - by: muench
For those of you following progress of the excrevator tool by the group of Francis at North Carolina State University, take a look at this presentation at the FMS3 conference:

The “Excrevator” - Safe and Effective Pit Emptying: Tate Rogers, North Carolina State University, Raleigh, NC, USA

It includes results from their field testing in:
  • Hyderabad, India
  • Durban, South Africa
  • Mzuzu, Malawi

From their summary slide:
  • The Excrevator is an effective pit emptying tool if trash content can be managed
  • An assortment of tools are necessary to empty the high variability of existing pits
  • Field testing to continue in Malawi in Early 2015
  • New field testing locations to be determined

As far as I know, their current phase of funding is coming (or has come) to an end, so I think they are looking for more funds for further R&D, so I wish them good luck with that!

Faecal sludge transport Tue, 17 Mar 2015 09:39:15 +0000
Re: Training sessions with pit emptiers in Mombasa, Kenya, using the Gulper: training materials we might use in our trainings? - and incentives - by: rsklar Faecal sludge transport Mon, 09 Mar 2015 05:53:27 +0000 Re: The excrevator (power auger) to empty pits (North Carolina State University, USA) - now field testing - by: FrancisdelosReyes
Sorry for the delayed response. I am not sure if I responded to you by email. I thought I did, but maybe not...

Please send me an email again so I can respond to your specific questions. Thanks!]]>
Faecal sludge transport Thu, 19 Feb 2015 15:22:07 +0000
Re: "Fishing" for solid waste in a pit latrine - have you seen people do it? (example from Malawi) - by: muench
you had written:
Francis, any photos you can share of your fishing tools would be of interest.

so when I saw the presentation by Francis & Tate in Hanoi at the FSM3, I immediately thought of you.

Here is a picture from their presentation perhaps this is what you were looking for, or at least it will give you some inspiration:

The full presentation is here:
The “Excrevator” - Safe and Effective Pit Emptying, Tate Rogers, North Carolina State University, Raleigh, NC, USA

A previous discussion about their project is here:

(I am so enjoying digging through the presentations from FSM 3 (all available here), thanks to Trevor and his team; a wealth of information was shared at that conference)

Faecal sludge transport Fri, 13 Feb 2015 12:44:00 +0000
Re: Structuring of the fecal sludge market for the benefit of poor households in Dakar, Senegal (ONAS) - optimising faecal sludge emptying, transportation, processing - by: muench
I would like to point out that there is also this presentation available that was given by Mbaye Mbéguéré at FSM3 in Hanoi in January 2015:

Market Structuring of Fecal Sludge Management for the Benefit of Poor Households in Dakar:

(the rest of the presentations from this conference are accessible here:

His last slide:

Key Results
  1. First contract signed for the operation of 3 FS processing plants in Dakar
  2. A customer management platform (call center) that will offer affordable service fees to poor HH in Pikine / Guediawaye
  3. Project leadership invited at ONAS weekly board of Director meetings
  4. Improved relationship between ONAS (national authority) and none-pipe sanitation service providers
  5. Increased visibility of FS emptiers job profile (TV interviews, participation to leading international events, trained personnel)
  6. Database of 59 000 HH Septic Tank have been referenced.
  7. Database of 135 trucks referenced
  8. Network of partner for testing innovative technologies and business model
  9. A reference case for many other utilities

This might be a good example of involvement of the local government (i.e. utilities in this case) which we discussed here:

Faecal sludge transport Wed, 11 Feb 2015 08:08:08 +0000
Re: Structuring of the fecal sludge market for the benefit of poor households in Dakar, Senegal (ONAS) - optimising faecal sludge emptying, transportation, processing - by: Onasbv
Thank you to find enclosed in English the magazine “Boues mag” number four (N°4) of Program of Structuring of Fecal Sludge Market for the Benefit of poor households in Dakar (PSMBV).
Good reception

Cover page:


P. 03 Editorial

P. 04 Program for the Structuring of the Fecal Sludge Market for poor people in Dakar suburban areas (Pikine and Guédiawaye)

P. 04 The call center: an innovative tool for the development of the fecal sludge market in Senegal

P. 08 Process for the Certification of Emptying Companies

P. 12 Communication: a key tool for ownership of the program by the stakeholders

P. 16 The delegation of the management of Dakar fecal sludge treatment plants to the private sector: a successful public-private partnership model

P. 21 The emptier guarantee fund : easier access to funding

P. 25 Payment of domestic septic tank emptying service through mobile money: improving people’s financial access to mechanical emptying services

Best regards,
Aissatou Basse]]>
Faecal sludge transport Tue, 10 Feb 2015 17:51:52 +0000
Re: Pit Pump prototype testing - by: willychipeta
Sorry for the late reply due to absence as I attended FSM 3 Conference.*

I wrongly uploaded the video but have uploaded it on you tube (link:

As regards your other areas for clarification, the focus has been on one aspect primarily the operational side in terms of operator use of the technology. This has been done to develop the technology in phases. We have only trialled it on mud slurry and the valves were coping very well as the flow rates noted so far were negligible hence looking into ways to improve.

The suction hose used was 50 mm as provided for irrigation purposes. But the size is to be changed after further analysis considering density variances and presence of trash as found in faecal sludge.

Please do share with me progress you are having with the Rammer

Willy Chipeta.

* See Willy's presentation here:]]>
Faecal sludge transport Thu, 29 Jan 2015 09:14:36 +0000
Presentation on Development of Pit Desludging Technology in peri urban Mzuzu (FSM 3, Hanoi, Vietnam) - by: willychipeta
For all interested in development of pit desludging technologies, please find attached presentation made at FSM 3, Hanoi, Vietnam attached for review. More suggestions are welcome.

Some of the issues raised included size of the suction hose used which was 50 mm. It was observed that this size can easily blocked. Another observation was on operating mechanism as trialled with cycle motion was thought as being energy inefficient rather than conventional treadling which uses weight as added advantage.

These observation made are currently being incorporated in third phase design of the prototype that shall be trialled on simulated sludge (5 pits) according to Radford formula and 30 actual pit emptying tests within peri urban Mzuzu.

The observations made helped in refining the concept towards development of a potentially viable technology for pit emptying in peri urban Mzuzu.

More suggestions and or questions are welcome.

Video link below:-

Faecal sludge transport Thu, 29 Jan 2015 08:25:05 +0000
Design Project - by: ScoopSquad
We are a sophomore design group from Iowa State University. Our task in this course is to build a prototype of a machine that can help a developing country in some way. Our problem that we have chosen was based off of a video we found of you speaking on a TED Talks stage. We want to create something similar to the invention on this forum, but runs only on human power.

Trying to research specifics on current conditions in India has proven difficult, and we would like to discuss with you some of your research and obtain a better understanding of the situation in places like India.


Scoop Squad -
Brian, Michael, Andrew, Jacob, Lucas, Everett]]>
Faecal sludge transport Wed, 28 Jan 2015 19:04:12 +0000
Re: Solutions for pit desludging and sludge management in low income urban settlements in Malawi (Mzuzu University) - and policy issues - by: Daniel82

With the MOU between Mzuzu University and The City Council in place, I had an opportunity to work closely with the Director of Health and Social Services whose department is in charge of sanitation in the city as mandated by the Local Government Act of the Republic of Malawi. During this period, access to the By-Laws and The Sanitation Bill which is awaiting enactment by Parliament, was granted. The By-Laws of the City are archaic and the miss a lot of things including FSM so a task to align them with the Sanitation Bill was incumbent upon the researcher. These By-Laws were formulated in 1992 and have not been amended since then such that the fines therein are less that the service charges. In addition, one stakeholder consultative meeting was held were all WASH stakeholders in the City including Entrepreneurs and Service Providers were invited. This forum provided a good platform for identification of who is doing what in the city. This meeting laid a strong foundation for future meetings of a similar nature which I plan to conduct in order to get information relevant for policy development.

Currently, a review of several pieces of legislation is in progress to identify what is complimentary and what is antagonistic among these documents.]]>
Faecal sludge transport Mon, 19 Jan 2015 11:57:37 +0000
Re: Pit Pump prototype testing - by: nicolag
Can't see that video but would love to.

You are focusing a lot on the pumping mechanism on the user side - does this mean you are quite happy with the method of emptying on the pit side or just choosing to improve one aspect?

What width pipe are you using and how are the valves coping with the waste?

Our work on the Rammer has paused over christmas but we're back to it now. We found that the blockages were relatively easily unclogged but the procedure of getting the rammer in and out to do the unblocking was a massive hassle.

We were also struggling with making a device with extendable length. We were concentrating on being able to get to the bottom of the pit, but our extensions made it almost impossible to empty the top of the pit.

Faecal sludge transport Wed, 14 Jan 2015 06:43:27 +0000