Construction & Installation

Proper construction of the filter box, preparation of the media, and installation of the sand is challenging, but is of critical importance to the effectiveness of the biosand filter. This section of the website explores some of the challenges which the BSF technician may face.

Designs & Modifications

Why is the present V10 biosand filter the way that it is? What about building a filter out of PVC pipe, or sheet metal? What is a Kanchan filter? This section of the website looks at the history and rational behind the biosand filter design, and alternative designs for the biosand filter.

Operation & Maintenance

The biosand filter is a living ecosystem. This section explores challenges related to how to use and maintain a biosand filter to ensure it remains effective.

Performance

Results of trials showing biosand filter performance at removing different contaminants and under different conditions.

Project Implementation
Support for starting or improving your biosand filter project.                                                                                                                                                        
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Biosand Filter
Construction
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Latest additions

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. (Ngai, T.K.K.; Fenner, R.A. 2014)
Virus removal in V10 BSFs was greater than 99.99% after only 43 days of operation. Important factors included length of residence time, filter depth, and filter ripening, with the schmutzdecke playing an important role. Diverse microbial communities were found throughout the filter depth. (Wang, H.; Narihiro, T.; Straub, A.P.; Pugh, C.R.; Tamaki, H.; Moor, J.F.; Bradley, I.M.; Kamagata, Y.; Liu, W.T.; Nguyen, T.H. 2014)

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