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1985-12-31
Device for the purification of waste waters by flotation by means of applying dissolved ir
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Device for complete desalination of water
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1982-03-24
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1982-01-20
Apparatus for increasing the ph of waste water
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1982-01-06
Method for waste water purification with the aid of a sorption agent
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Method of utilizing waste water
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1982-06-30
Process for the biological purification of waste water
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1979-06-08
Waste water treatment
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1979-12-31
Device for the purification of waste water with functional polyculture by integrated method
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Device for sterilizing pool water
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1978-11-11
Device for treating waste water
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1978-09-02
Device for refining water
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1978-12-15
Method of purifying waste water
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Water purification
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1978-07-28
Device for treating waste water
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1979-06-20
Device for treating waste water
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1978-09-21
Device for purifying waste water
CS193906B1
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1979-11-30
Device for the biological purification of waste water
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1981-11-26
Water purification process
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Device for waste water treatment by functional borne polyculture
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1978-11-06
Device for rapidly purifying organic waste water
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1979-02-23
Device for treating waste water
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1979-02-16
Device for treating waste water
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Device for purifying waste water