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1986-05-09
INSTALLATION FOR ANAEROBIC PURIFICATION OF WASTEWATER
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1985-08-02
WASTEWATER TREATMENT PLANT
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1989-12-01
AGENT FOR THE PURIFICATION OF WASTEWATER AND METHOD FOR THE PRODUCTION THEREOF
DE3060742D1
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1982-10-07
Apparatus for the aeration of waste water or sludge
FR2508431B1
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1986-08-22
TREATMENT COMPOSITION, MANUFACTURING METHOD THEREOF AND USE THEREOF FOR THE TREATMENT OF SEWAGE
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1991-05-17
PROCESS AND PLANT FOR THE PURIFICATION OF WASTEWATER, ESPECIALLY URBAN WASTEWATER
BE855426A
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1977-12-06
PROCESS AND PLANT FOR THE TREATMENT OF EFFLUENTS AND SEWAGE WATER
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1987-01-23
PROCESS FOR THE INCORPORATION OF SLUDGE IN CEMENT
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1988-06-24
ACTIVATED SLUDGE PROCESS FOR THE TREATMENT OF WASTEWATER
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1980-10-16
PROCESS AND PLANT FOR THE ANAEROBIC TREATMENT OF WASTEWATER
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1972-12-01
PROCESS AND INSTALLATION FOR THE TREATMENT OF WASTE WATER
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1987-03-06
PROCESS FOR CONDITIONING SLUDGE OF WASTEWATER
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1988-06-24
PLANT FOR THE TREATMENT OF WASTEWATER WITH MICROORGANISMS
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1984-12-21
WASTEWATER TREATMENT PLANT ACCORDING TO THE ACTIVATED SLUDGE PROCESS
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1989-08-18
DEVICE FOR THE IDENTIFICATION OF MICROORGANISMS
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1976-05-14
METHOD AND DEVICE FOR THE TREATMENT OF WASTE WATER
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1989-11-24
PROCESS FOR THE REGULATION OF WASTEWATER TREATMENT PLANTS
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1977-12-27
PLANT FOR ANAEROBIC SLUDGE AND WASTE WATER PURIFICATION.
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1983-07-07
INSTALLATION FOR THE CONTINUOUS PURIFICATION OF WASTEWATER
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1985-11-15
PROCESS AND PLANT FOR THE REMOVAL OF CARBONACEOUS AND NITROGEN POLLUTION FROM WASTEWATER
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1977-07-29
PROCESS AND PLANT FOR THE REMOVAL OF CARBON AND NITROGEN POLLUTION FROM WASTEWATER
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1987-03-06
PROCESS FOR TREATING WASTEWATER SLUDGE
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1989-02-17
PROCESS AND PLANT FOR THE DENITRIFICATION OF POLLUTED WATER
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1982-06-25
METHOD AND INSTALLATION FOR THE HYDRAULIC AERATION OF WASTEWATER
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1974-02-25
PROCESS AND INSTALLATION FOR THE TREATMENT OF WASTE, OILY AND SOIL WATER