Technical drawing, "Activated Sludge" process plant 1923
- Made:
- 1924
- maker:
- Science Museum
[Technical drawing] "Activated Sludge" process plant 1923. Type "C" for treatment of sewage from small communities / [Science Museum. 1924. Line drawing with wash, scale c.1 : 16. Drawing makes reference to Museum objects 1924-220 and 1924-456 in Sewerage & sanitation collection. It is copied from drawing 1924-222 (disposed of)]