Oysters help clean ocean
1 April 1999
JAQUELINE DELIA/RUSH / CAMERA PRESS
Oyster shells are to clean up waste water in Oshima, Japan. ‘Oyster shells harbour large numbers of anaerobic and aerobic microbes on their surfaces. Dirty water is food for these microbes,’ explains Toyokuni Asahina, one of the designers of the wastewater plant. Around 250 tonnes of shells will be used annually to form layers in filtration tanks where the oyster-shell microbes can feast on kitchen, bath and laundry water from 265 households.
*_New Scientist_ Vol 161 No 2169*
This article is from
the April 1999 issue
of New Internationalist.
- Discover unique global perspectives
- Support cutting-edge independent media
- Magazine delivered to your door or inbox
- Digital archive of over 500 issues
- Fund in-depth, high quality journalism