a fairly simple device to construct and operate and so often presents a cost-effective solution provided the pollutant is biodegradable, at fairly low concentration and at a reasonable temperature
Dense vegetation designed to filter stormwater runoff as it passes through
Biofiltration is a pollution control technique using living material to filter or chemically process pollutants. Common uses include processing waste water, capturing harmful chemicals or silt from surface runoff, and microbiotic oxidation of contaminants in air.