SuSanA - Forum Kunena Site Syndication Thu, 29 Jan 2015 12:19:48 +0000 Kunena 1.6 SuSanA - Forum en-gb 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.]]>
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: Modernising urban sanitation in Southern Bangladesh (SNV) - by: sahidul93 Thanks for your interest.
Our local technical partner Khulna University of Engineering and Technology with collaboration of Asian Institute of Technology is reviewing the technology. Hopefully by June we will get the technology.

Faecal sludge transport Fri, 23 Jan 2015 02:33:40 +0000
Re: Update: Solutions for pit desludging and sludge management in low income urban settlements in Malawi (Mzuzu University) - by: rkaupp and the report includes the various ways of defining "small towns".

Best wishes
Faecal sludge transport Mon, 19 Jan 2015 15:29:15 +0000
Re: Update: Solutions for pit desludging and sludge management in low income urban settlements in Malawi (Mzuzu University) - by: ooaluko 1. Urban: 20,000 peopleor more
2. small town (semi-urban): between 5,000 and less than 20,000people
3. Rural: less than 5,000 residents.

However, some programme uses presence of infrastructures, such as pipe borne water supply, among others as the defining factor.

Is it possible to have a universabledefinition of these terminologies?


Femi Aluko]]>
Faecal sludge transport Mon, 19 Jan 2015 15:18:44 +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: Modernising urban sanitation in Southern Bangladesh (SNV) - by: KimAndersson I hope the first year of your FSM project in Bangladesh has been successful. It would be very interesting to get an updated on the status of your project, what are your results/emerging findings so far.

Pawan Jha asked before about the technologies for FS management you are applying, considering that you are aiming for improved treatment, disposal and reuse of sludge. Is it possible to say something more about this by now?

I’m interesting to know how you are implementing your project. Are you using small pilots in limited areas of the city? Are you testing different modes of implementation (public, public/private, private)? Are there any informal FSM in place that you decided to strengthen to make it more sustainable? Any insights you can share are most welcome.

All the best,
Faecal sludge transport Mon, 19 Jan 2015 11:10:56 +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
Re: "Fishing" for solid waste in a pit latrine - Perhaps not necessary - by: nicolag
Francis, any photos you can share of your fishing tools would be of interest.

Has anyone else seen anything used for fishing other than a metal rod similar to my photos at the start of this thread?]]>
Faecal sludge transport Mon, 15 Dec 2014 07:05:55 +0000
Re: "Fishing" for solid waste in a pit latrine - Perhaps not necessary - by: dandreatta
It was developed after attending a conference where a speaker said something like, "Gulpers don't work, buckets work better". This device is intended to essentially be a bucket, but still keep the operator out of the muck. Work is ongoing, with a more compact prototype being developed. For a location with a very small squatting hole such as in the pictures here, a separate clean-out port would be needed, and this port would be covered except when the pit is being emptied.

See what you think.

Dale Andreatta, Ph.D., P.E.
Mechanical Engineer]]>
Faecal sludge transport Wed, 10 Dec 2014 22:21:20 +0000
Re: Power auger modification to empty pits (North Carolina State University, USA and South Africa) - by: Tsepo
Can you be able to tell how far your working relationship was with the Ethekwini Municipality in planning to implementing this excavation of pit latrines. I am in communication with a company called Amanz' abantu based here in South Africa Eastern Cape
of which I was referred to them by Dr Sudhir Pillay.

I am looking of this excavation from the business point of view and would just love to join in the implementation of healthy sanitation for the good lives of those who do not have]]>
Faecal sludge transport Wed, 26 Nov 2014 08:03:10 +0000