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→‎Field experiences

==Field experiences==

'''Kenya study'''<br>

 

A study was investigated by Ochieng and Otieno (2004)in a pilot plant built at Moi University in Kenya using broken burnt bricks and charcoal, as filter media for removal of Suspended solids and turbidity. They noted that broken burnt bricks and improved agricultural waste (charcoal Maize cobs), can also be effectively used as pretreatment media and therefore could serve as alternatives where natural gravel is not readily available. The design and sizing of the pilot plant was guided by Wegelin design criteria and a constant filtration rate of 0.75 m/h was chosen for the HRF units. It was observed that in general both broken burnt bricks and charcoal performed better than gravel. This observation could have resulted from the reason that both charcoal maize cobs and broken burnt brick have a slightly higher specific surface area and porosity respectively to enhance the sedimentation and other filtration processes compared to gravel.

 

'''African Killer Bees Supported Sustainability'''<br>

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