Sludge scrapers hung from slewing bridge over tank - have hoisting cables to lift scrapers out for inspection
ES411701A3
A procedure for the biological depuration of wastewater. (Machine-translation by Google Translate, not legally binding)
ES411702A3
An aeration apparatus for liquids, particularly for wastewater. (Machine-translation by Google Translate, not legally binding)
DE2237929A1
Scrubber for purifying waste gases - using biologically active scrubbing agent
GB1152737A
A Ventilating Bed for Mixing, Homogenizing, and Discharge Apparatus.
DE1609002B1
Ventilation device for liquids, especially for waste water in activated sludge systems
DE1584994B1
Method and device for the biological purification of waste water
ES316253A1
A procedure for the fine filtration of suspensions, especially of carbonation juices in sugar factories. (Machine-translation by Google Translate, not legally binding)
DE1546002B1
Method and device for cleaning a contaminated organic flushing liquid
DE812422C
Process and device for the automatic separation of compressed gases or vapors from liquids separated from them
