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Sludge scraper arrangement, comprises movable scraper with curved or bent transport part
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Sludge scraper
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Flocking device for water purification or sewage treatment plant, contains dwell zone with pivotable end walls and oscillating grate wall
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Drain for removing sludge from sewage treatment plant sedimentation tank
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Apparatus for separation
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Transporting element of a reciprocable scraper for moving sludge in settling basins and similar objects at water purification plants
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Process for separation.
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Device for settling tanks and method of discharge
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