step-by-step biosand filter construction guide copy

Step-by-Step BioSand Filter Construction GuidePrepared for: EWB-UW Rwanda GroupPrepared by: Jonathan Lee

January 19, 2008

Step-by-Step BioSand Filter Construction Guide

For EWB-UW Rwanda Group

Donate www.ewbuw.org/donate Project Implementation Trip July 2007

EWB-UW Rwanda - www.ewbuw.org/donate

http://www.ewbuw.org/donate








Shot 1: Location of drum purchase Shot 2: Drum transportation to Hotel Castel

Shot 3: Drum transportation to Hotel Castel













Shot 8: Arrival at Hotel Castel Shot 9: Material transportation to Muramba

Shot 10: Remove the top of one of the drums for the diffusion plate.

Shot 11: Same as shot 5. Shot 12: Drill holes into the top to al-low for the diffusion of water.









Shot 13: Cut three equal length pieces of PVC for supporting the diffusion plate.

Shot 14: Drill holes into the bottom PVC tube to allow water to flow out of the filter.

Shot 15: The vertical PVC tube and two PVC elbows.

Shot 16: The small PVC tube that mounts into the wall of the drum.

Shot 17: The final faucet has been glued.

Shot 18: The drum with only the fau-cet attached.









Shot 19: Attach the bottom and verti-cal PVC tube with one elbow.

Shot 20: Close-up of the elbow attach-ment.

Shot 21: Use foam to block debris from entering the end of the tube.

Shot 22: The foam inside the tube. Shot 23: A gravel base made to rest the plumbing.

Shot 24: Work on plumbing takes place at the filter’s final resting place.









Shot 25: Work continues. Shot 26: Work continues. Shot 27: Additional gravel spread over the top of the plumbing.

Shot 28: Clean gravel carried to the filter.

Shot 29: Patrice (right) and vocational student work on the filter.

Shot 30: Base layer of gravel finished.









Shot 31: Clean sand brought to the fil-ter.

Shot 32: Sand is entered into the drum Shot 33: A base of sand is formed over the gravel.

Shot 34: Sand base poured. Shot 35: Light compaction of sand. Shot 36: Diffusion plate PVC supports stand in the sand base.









Shot 37: All three supports are posi-tioned at equal height.

Shot 38: Onlookers are happy with their work.

Shot 39: More sand poured into filter.

Shot 40: Sand work continues. Shot 41: Sand work continues Shot 42: Filter is located near the Vo-cational School’s E. coli positive tap.









Shot 43: Sand work continues. Shot 44: Young Muramban curiously watches.

Shot 45: Sand lightly compacted.

Shot 46: Filter primed with water per-colating through the diffusion plate.

Shot 47: Test run is a success! Shot 48: Happy faces all around.









Shot 49: Water table that will later make up the biological layer.

Shot 50: The diffusion plate unwinds on its supports.

Shot 51: A working filter.

Shot 52: Water flushed through the filter.

Shot 53: Discussion of maintenance, filter technology, and future construc-tion.

Shot 54: Leaving a mark for the fu-ture.





step-by-step biosand filter construction guide copy

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