Research Papers

Displaying 21 - 30 of 88
Using a biosand filter project by DHAN Foundation in India as a case study, this computer model outlines how an NGO can choose effective programme implementation strategies to increase the adoption and consistent use of household water treatment technologies in consideration of complex system interactions, trade-offs, and counter-intuitive outcomes.
Moving concrete and plastic bucket biosand filters 1 km after 9 months of operation reduced the hydraulic loading rate but significantly increased E. coli removal.
Wastewater from BSF filter maintenance is contaminated water and should be disposed of properly, not in a way that might contaminate drinking water.
Like slow sand filters, BSFs are not effective at removing hormones from drinking water. Chlorinating after filtration can improve removal, but chlorine is most effective concentrations which are higher than generally used.
The human effort required in a water intervention, such as BSF, over its lifespan (i.e. in construction, during use) should be considered when comparing alternatives, along with the gender distribution of that effort.
Bacterial contamination on household toys and association with water, sanitation and hygiene conditions in Honduras.; Stauber, C.E.; Walters, A.; Fabiszewski de Aceituno, A.M.; Sobsey, M.D., 2013
Water and sanitation indicators, such as having a BSF or a latrine, are associated with lower levels of bacterial contamination on children's toys in households.
A modification to the BSF was developed to allow for a continuous flow rate, improving the filter's ability to remove microbes. An additional modification to use sheet metal for the body was also tested successfully.
Measuring the Impact of Health Education Modules in Cameroon, West Africa; Chaponniere, P.A.; Cherup, S.M.; Lodge, L., 2013
Facilitating behaviour change requires a long term commitment to a community, and an ability to adapt and modify approaches over time to sensitively respond to community needs. A BSF project paired with hygiene education reduced diarrhoea in children.
A field study in Nicaragua found that biosand filters removed bacteria even when they were operated imperfectly, but recontamination of water was a problem.
Evaluation of the Impact of the Plastic BioSand Filter on Health and Drinking Water Quality in Rural Tamale, Ghana; Stauber, C.E.; Kominek, B.; Liang, K.R.; Osman, M.K.; Sobsey, M.D., 2012
Plastic biosand filters led to a diarrhoea reduction of 60%. Water from the filters had a 97% removal of E. coli.