RU1782942C
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Device for biological treatment of waste fluid
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SU1728698A2
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Device for determination of leakage of fluid during its flowing via pipe line
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Apparatus for biological cleaning waste water
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Apparatus for aerobic stabilization of waste water sediment
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Device for detecting leakage in liquid flowing along pipe-line
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Settler
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Apparatus for removing deposit out of settler
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Device for sewage purification process control by force flotation
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Device for control of liquid clarification process
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Device for waste water purification
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Dirt-trapping grate of water intake structure
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Device for automatic removal of compacted slime from flotation machine
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Liquid aerating apparatus
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Device for automatic regulation of process of biochemical purification of waste water
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Water intake head
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