Cleaning device for a sewer and sewer with such a cleaning device
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Process and device for the production of hydrocarbons from biological fats
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Catalytic reactor
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Catalyst reactor, for the thermo catalytic decomposition of organic materials e.g. clarified sludge and the like, has a heated outer reactor tube with an inner rotating tube with a partial return of collected conversion carbon
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Plate aerator used in waste water tanks comprises a plate, an air distribution membrane and an air pipe which discharges into an air distribution chamber
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Sand catcher
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Sand trap for purifying waste water has inlet for waste water at right angles to separating tank and near its top, air jets along base of tank and trough for collecting sand along tank below these
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Sand trap for purifying waste water has inlet for waste water at right angles to separating tank and near its top, air jets along base of tank and trough for collecting sand along tank below these
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Washer for separating fine substances from coarse components with a liquid
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Waste water treatment comprises sand trap
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Waste water assembly aerators used alternately as air inlet and water filter outlets
