Blue Barrel Biochar Water Treatment System (300 L/day)¶

Rainwater & Storage • Est. CapEx: Low-cost / Locally fabricated

Technical Overview¶

A medium-scale decentralized water treatment system built from a 200 L HDPE drum, integrating gravel roughing filtration, slow sand filtration, and biochar adsorption. Designed for community or institutional use in remote areas.

Key Specifications & Engineering Parameters¶

Parameter	Specification
Category	Rainwater & Storage
Capital Cost	Low-cost / Locally fabricated
Primary Mechanism	Gravity-fed water first passes through a gravel roughing filter to remove turbidity, then a slow sand filter for pathogen reduction via biological activity, and finally a biochar contactor for adsorption of chemical contaminants (pesticides, pharmaceuticals, heavy metals). An inlet float valve controls flow and maintains water levels.
Target Scale	Household / Village Cluster
Standard Lifespan	10 - 20 Years

Engineering Trade-Offs¶

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Cross-Reference & Interactive Tools¶

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