SuSanA - Forum Kunena Site Syndication Sat, 28 Mar 2015 14:19:52 +0000 Kunena 1.6 SuSanA - Forum en-gb 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
Re: Power auger modification to empty pits (North Carolina State University, USA and South Africa) - by: nashalbu I would be interested to see the results of your field testing during 2014.
Harriet (Nash)]]>
Faecal sludge transport Tue, 13 Jan 2015 14:26:58 +0000
Pit Pump prototype testing - by: willychipeta
As part of this research, my focus is development of pit emptying technology. To this end modification of treadle pump technology is investigated. The second prototype of the Pit Pump (modified treadle pump) has been completed with changes made after the first phase review and mud slurry test undertaken then. The issues noted included half cycle motion was tedious and resulted in awkward operation than envisioned design of a foot operated prototype that can possibly be less straining on the body that other existing technologies.

Hence in the second phase of the prototype incorporated a full cycle motion as done in conventional bicycle cycling making operations potentially simpler than in the first phase design.

Additionally, in the second phase design a motorbike chain was added as the bicycle chain kept breaking off when simulated cycle motion were attempted. Therefore it is envisioned that this addition will bring about more stability to allow more rigorous tests of the second prototype. Tests on mud slurry were then attempted but it was found that the welder had left out some bolts that held the base frame tightly hence experienced leakages of the mud slurry making accurate determination of flow rates not attainable.

See attached video of work in progress of prototype development and send me any comments and or ideas on more improvements needed as the testing continues

Willy Chipeta

Masters Student.
Faecal sludge transport Mon, 12 Jan 2015 07:19:30 +0000
Re: "Fishing" for solid waste in a pit latrine - have you seen people do it? (example from Malawi) - by: dandreatta

Again, this shows the preliminary version of a simple device to empty pit latrines and septic tanks without the operator getting into the pit. A more compact version is being developed. The device retains the simplicity of a bucket, but adds a long handle, rope, and pivot.]]>
Faecal sludge transport Tue, 16 Dec 2014 19:16:50 +0000