A biosand filter (BSF) is an adaptation of the traditional slow sand filter, which has been used for community drinking water treatment for years. The biosand. Biosand Filter: A biosand filter is a simple type of water purification system that uses sand, gravel, gravity and some simple engineering to purify water. A BSF is a household water treatment technology. It was inspired by slow sand filtration, a water treatment process that has been used since the early s.

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Besides improving its appearance, stainless steel adds to the strength, reliability, durability, and portability of the filter.

David Manz, who has developed of the small scale humanitarian models of biosand filters. For more information on the technical aspects of the biosand filter visit www.

Biosand Filter | SSWM – Find tools for sustainable sanitation and water management!

Webpage of a legally licensed producer of pre-fabricated plastic biosand filters. About 1 US gallon 3. However, dissolved chemicals such as organic pesticides or arsenic are not removed.

Since Water for Cambodia has been building and installing biosand water filters in rural villages of Cambodia. Characterisation of the Biosand Filter for E. The stainless steel filter, called JalKalp, offers increased filtration rate and better portability than concrete models and better production quality control.

The removal after this time ranged from Hydraid biosand filters are constructed from medical grade plastic with ultraviolet resistance. Wastewater Treatment Module 4: A field study to evaluate the use and performance of Biosand filters at the Artibonite Valley of Haiti.


The purpose of this paper is to describe the development, knowledge and the present design of the concrete household biosand water filter in a manner easily understood by readers who may or may filteg have advanced training in water treatment engineering. Many projects may provide assistance in building the water filters and some may even distribute them but getting the host country nationals to use the filters requires much more dedication.

Presentation on the technical and non-technical aspects of sanitation household-level drinking water treatment and safe storage HWTS in developing countries. Removal efficiency and the subsequent effectiveness of the filter increase throughout this period.

The filter container can be made of concrete, plastic or any other water-proof, rust-proof and non-toxic material. Their capital costs depend on the local material and labour costs.

How Biosand Water Filtration Systems Work

Field analysis was conducted on 55 household filter near Bonao, Dominican Republic. The Latin American and Caribbean countries have seen growing pressure on water resources, with increasing demand and costs, for agricultural, domestic and industrial consumption. Because of obvious privacy concerns and administrative expense, we’re not able to link you to a specific family or filter.

The dirty water is than removed and dumped away. Climate Change Further Resources: This removal was comparable with that of the slow sand filter. These processes include mechanical trapping, predation, adsorption, and natural death NGAI et al. Retrieved from ” https: Reuse and Recharge Further Resources: During each visit, beneficiaries receive repeated instruction about safe water practices and how to take care of the filter. This page was last edited on 8 Novemberat Each community is a full participant in the project.


A BSF consists of a concrete or plastic container filled with specially selected and prepared sand and gravel.

Chlorinated water should not be poured into this filter as chlorine kills microorganisms presented in biofilm resulting in low pathogen removal performance. Your gift provides technical assistance and supplies plastic container, concrete, forms, gravel so that communities can build these Biosand filters for distribution to homes in their village.

S M Sehgal Foundation [17] promotes the model, which required no electicity, across India through partnerships with like-minded organizations to benefit as many rural families as possible.

The treated water generally has an agreeable colour, taste and odour. Biosand filters remove pathogens and suspended solids from water using biological and physical processes that take place in a sand column covered with a biofilm. This video provides an overview of biosand filter and its promotion in developing countries.

Biosand filter

This process is repeated until flow rate is restored. The removal of contaminants and disease causing agents biosandd possible due to a combination of biological degradation and mechanical filtration processes. Another problem facing the use of the filters is adoption.

This website is a good starting point to get into the subject of biosand filter.