Slash sewage-sludge volumes with this add-on digester
| By Tetsuo Satoh
A 60% reduction in the sludge volume was achieved at the sewage treatment plant of Noboribetu City, Hokkaido, Japan, after installing a Bio-Diet SBD-1200 system from Nippon Steel Kankyo Engineering Co. (NSKE; Tokyo, www.nske.co.jp). The demonstration…