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Hydroponic waste management system

Hydroponic waste management system

T825/0171

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Credit

MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY

Caption

Hydroponic waste management system in Kapalai Island, Sabah, Malaysia. To prevent the run off of nitrogen-rich waste on to the nearby coral reefs, Kapalai resort has set up a hydroponics-based waste treatment plant that relies on bacterial films and plants to remove the nitrogen from waste water. Waste water and sewage first flows through septic tanks in which solids settle out. Ozone is then used to sterilise the water which is then passed through a series of large plastic vats planted with water hyacinth. The root systems of these plants develop a bacterial film which breaks down any nitrogenous waste in the water allowing it to be reused and pumped into the sea without damaging the nearby coral reefs.

Release details

Model release not required. Property release not required.

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