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DE2648545A1
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Sewage treatment plant - with annular settling tank surrounding circular aeration tank with quadrant flow channels of equal width
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DE2648544A1
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Activating tank in sewage purification plant - has sludge mover suspended from bridge partly propelled by screw
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DE2603436A1
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Rainfall catch basin - with relief sill in centre of bottom cone for water effluent free from solids
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DE2554591A1
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Disc aerator for an activated sludge tank - distributes air in fine bubbles without becoming blocked
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DE2554169A1
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Treating liq. organic waste aerobically - by heat exchange with oxygen carrier in several stages
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DE2527978A1
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Storm sewer basin - with central conical deflector and base gutter for solids collection and discharge without clogging
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DE2428935A1
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Small, household subsidence-proof septic tank - connected without expense when communal sewage system is installed
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CH575345A5
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Activated sludge purificn tanks - ventilated by compressed air, with submerged rotating tube turbines
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DE2427550A1
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Gasification of fluids, esp. for sewage purificn. - with agitation and aeration by separate aggregates, with intermittent working
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DE2401466A1
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Aeration system for sewage settling basin - has horizontal ejectors for sewage and air causing circular motion
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DE2321581A1
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Aerated sand trap for sewage plant - using air-induced roll-over motion in annular channel
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DE2310978A1
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Activated sludge purificn tanks - ventilated by compressed air, with submerged rotating tube turbines
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DE2231061A1
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Aerator for liquids, esp sewage - has immersed motor avoiding need for long connecting shaft
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DE2125983A1
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Biological sewage treatment plant - esp for high organic contamination levels
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DE1943200A1
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Oil-fuel tank
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DE1784236A1
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Container for purification systems
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US3537583A
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Apparatus for purifying waste waters
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DE1658094A1
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Device for the biological purification of waste water
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DE1658089A1
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Device for clarifying waste water
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DE1584950A1
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Process for dewatering sludge, especially sewage and industrial sludge, and system for carrying out the process
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