The BRAC WASH programme has released a short video about their ongoing study in Bangladesh on the use of faecal sludge from double pit latrines as organic fertiliser.
The final evaluation of BRAC WASH I programme identified pit emptying and the safe final disposal of sludge as a key ‘second generation’ challenge for the near future. To address this, BRAC is undertaking action research to ensure the safe reuse of faecal sludge in the BRAC WASH II programme, answering the following questions:
- Does the faecal sludge comply with the WHO Guidelines on microbiological quality after one year of storage?
- What is the nutrient content of the faecal sludge?
- Is it possible to make faecal sludge-based organic fertiliser production commercially viable?
In 2013, the UK-based School of Civil Engineering at the University of Leeds won a BRAC WASH II research call for secondary treatment options for faecal sludge. Their project is called Value at the end of the Sanitation Value-chain (VeSV).
The University of Leeds is working together with three other partners: Bangladesh University of Engineering and Technology (BUET), NGO Forum for Public Health (Bangladesh), and IWMI International Water Management Institute (Sri Lanka).
Despite the widespread implementation of Community Led Total Sanitation (CLTS) programs and many claims of success, there has been very little systematic investigation into their sustainability. A new study, which aims to change that, is creating a stir in the WASH sector.
A study commissioned by Plan International on the sustainability of CLTS programs in Africa revealed that 87% of the households still had a functioning latrine. This would indicate a remarkably low rate of reversion (13%) to open defecation (OD) or “slippage”.
However, if the criteria used to originally award open defecation free (ODF) status to villages are used, then the overall slippage rate increased dramatically to 92%. These criteria are:
- A functioning latrine with a superstructure
- A means of keeping flies from the pit (either water seal or lid)
- Absence of excreta in the vicinity of the house
- Hand washing facilities with water and soap or soap-substitute such as ash
- Evidence that the latrine and hand washing facilities were being used
Posted in Africa, Hygiene Promotion, Publications, Research, Sanitary Facilities
Tagged Community-Led Total Sanitation, Ethiopia, handwashing, Kenya, Plan International, Sierra Leone, slippage, Sustainability, Uganda
More attention should be given to the assessment of nutrition practices when assessing the impact of WASH on the health of school children. We also don’t know enough about the long term impact of WASH interventions on child health. These are some of the conclusions that researchers from the Center for Global Health and Development at the the University of Nebraska Medical Center (UNMC) drew from a review of the literature .
Dr. Ashish Joshi and research assistant Chioma Amadi reviewed the impact of water treatment, hygiene, and sanitary interventions on improving child health outcomes such as absenteeism, infections, knowledge, attitudes, and practices and adoption of point-of-use water treatment. For their final analysis they selected 15 peer-reviewed English-language studies published between 2009 and 2012 that focused on the effects of access to safe water, hand washing facilities, and hygiene education among school-age children.
The Tiger Roars: New DIV Grantee will Test the “Tiger Toilet” that uses Worms for Good! | Complete article/source: USAID Development Innovation Ventures
Excerpts – DIV is delighted to announce a new Stage 1 award of over $170,000 to Bear Valley Ventures Ltd to conduct a field trial of the Tiger Toilet in India, Uganda, and Burma. The Tiger Toilet is a latrine system that has the potential to be an affordable, compact, and superior alternative to pit latrines and septic tanks. It harnesses the capabilities of composting worms such as the Tiger Worm (Eisenia fetida), to digest the solids within the system, making it very compact and particularly suitable to high density urban environments.
The project aims to address the global challenge of providing access to adequate sanitation; worldwide, over 4 billion people currently use latrines that can be unpleasant and unhygienic or lack sanitation provisions entirely. Sewered systems will never be a reality for many around the world; therefore an on-site (i.e. a system that does not require piping the waste off-site for treatment) option is needed. Presently the best on-site option is a septic tank, which is often financially out of reach.
Walter Gibson, Director of Bear Valley Ventures, adds that “Vast numbers of people in the world have to put up with inadequate sanitation every day of their lives. It’s imperative that we develop better, more affordable solutions that address their needs and aspirations for a decent toilet. We believe the Tiger Toilet represents one such option. We are very grateful to USAID for this support which allows us to test its potential.”
The Tiger Toilet is linked to a normal pour flush system, so the user experience is therefore the same as using a septic tank or a pour flush latrine. The waste then enters a tank which contains the worms and a drainage layer. The solids are trapped at the top of the system where the worms consume it, and the liquid is filtered through the drainage layer. Extensive laboratory scale trials found that the worms reduce the solids in the system by above 80%, and the effluent quality is higher than that from a septic tank. An initial prototype has been running at the Centre for Alternative Technology in Wales, UK for over a year.
Infographic: ADB and Bill & Melinda Gates Foundation
The Asian Development Bank (ADB) and the Bill & Melinda Gates Foundation have set up a joint trust fund to expand non-sewered sanitation and septage management solutions across Asia.
The Gates Foundation will invest US$ 15 million into the new Sanitation Financing Partnership Trust Fund, which will leverage more than US$ 28 million in investments from ADB by 2017.
The Trust Fund will pilot innovations in sanitation and septage management, provide grant funds for innovations in ADB’s sanitation projects, and support polices on septage management and sludge treatment for low-income urban communities who lack access to piped networks or safe wastewater disposal systems.
The Trust Fund will be part of ADB’s Water Financing Partnership Facility (WFPF), which has invested US$ 2.5 billion (out of a total of US$ 8.8 billion) in water supply, sanitation, and wastewater management projects since 2006.
So far the Gates Foundation has funded 85 sanitation research & development projects as part of their grant schemes such as the “Reinvent the Toilet Challenge” and “Grand Challenges Exploration“. An overview of these projects and background information is available on the SuSanA website.
The BRAC WASH II programme in Bangladesh, which is co-funded by the Gates Foundation, includes a component for innovative action research on sanitation and water supply.
Source: ADB, 02 Sep 2013
Posted in East Asia & Pacific, Funding, Research, Sanitary Facilities, South Asia, Wastewater Management
Tagged Asian Development Bank, Bill & Melinda Gates Foundation, faecal sludge management, finance, Sanitation Financing Partnership Trust Fund, urban sanitation