Aeration of sludge with nozzles having specific diameter
EP2000604A1
Method for qualitative and quantitative waste water control in sewer emergency outlets
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Method for classification of sewage from sewage compounds in the inlet of a pumping station, a control installation or a treatment plant
EP1279774A1
Method for managing cascade waves in sewer networks
EP0955418A1
Method for controlling discharge regulators in liquid carrying pipe or free-head systems
EP0918113A1
Sliding system for continuous control
EP0709529A1
Waste water filter system and the resulting method for reducing strainable impurities of emergency outlets of mixed systems and mixed water clarification tanks
EP0589079A1
Method for manufacturing of barrier plates, and barrier plate manufactured by this method
EP0544029A1
Guide cap for floating barrage
DE2918968A1
Jig for curved kerb construction - has two parts hinging together by centering pin and partly overlapping
DE2721963A1
Continuous separation procedure for flotsam - dams floating substances and separates them by use of side flow extraction duct
DE2552516A1
Water control gate for canals and basins - has plate sliding in grooves with seals against liquid and dirt
