Sludge collecting apparatus
Sludge collector with entrapment plate
Sludge flight support rail assembly
Sludge removal suction header
Sludge removal system
Sludge scraper apparatus
Sludge scraper mechanism
Sludge scraping and collecting apparatus
Sludge scraping apparatus
Sludge settling basin
Sludge shovel apparatus
Sludge vacuum system
Surface skimmer means for settling tank
Surface skimming apparatus