DWA Industry Guide Watermanagement, Wastewater-Waste

2.7.4 Container construction

6.2.5 Aeration tanks

7.1.13 Sludge digesters made from steel sludge agitators

7.2.19 Other sludge thickeners, sludge containers

7.7.2 Gas tanks

7.7.14 Safety equipment, safety installations