PT85836A
(en )
1987-10-01
BIOLOGICAL PURIFICATION PROCESS OF WASTE WATER ON BED OF GRANULAR MATERIAL
FR2527584B1
(en )
1989-12-01
AGENT FOR THE PURIFICATION OF WASTEWATER AND METHOD FOR THE PRODUCTION THEREOF
BE884729A
(en )
1981-02-12
PROCESS FOR THE PURIFICATION OF WASTEWATER CONTAINING COLORING MATERIALS
BE801942A
(en )
1973-11-05
PROCESS FOR BIOLOGICAL PURIFICATION OF SEWER WATER
BE880344A
(en )
1980-05-29
AUTOMATICALLY ADJUSTABLE DECONTAMINATION PROCESS FOR WASTEWATER CONTAINING NITRITE IONS
FR2432485B1
(en )
1987-03-20
BIOLOGICAL WATER DENITRIFICATION PROCESS
FR2516071B1
(en )
1988-06-24
ACTIVATED SLUDGE PROCESS FOR THE TREATMENT OF WASTEWATER
FR2491909B1
(en )
1987-03-06
PROCESS FOR CONDITIONING SLUDGE OF WASTEWATER
FR2644773B2
(en )
1991-05-24
PROCESS AND DEVICE FOR THE PURIFICATION OF POLLUTED WATER
FR2563208B1
(en )
1986-08-01
OZONE WATER TREATMENT PROCESS
FR2547574B1
(en )
1988-08-05
PROCESS AND PLANT FOR THE AEROBIC BIOLOGICAL PURIFICATION OF WASTEWATER USING FREE AND FIXED MICROORGANISMS
BE862490A
(en )
1978-04-14
PROCESS FOR BIOLOGICAL WATER TREATMENT
FR2496084B1
(en )
1987-03-06
PROCESS FOR TREATING WASTEWATER SLUDGE
FR2619559B1
(en )
1989-11-24
PROCESS FOR THE REGULATION OF WASTEWATER TREATMENT PLANTS
FR2527585B1
(en )
1990-01-05
PROCESS FOR THE TREATMENT OF INDUSTRIAL WASTEWATER WITH ACTIVATED SLUDGE
FR2511359B1
(en )
1985-10-04
OZONE WASTEWATER TREATMENT PROCESS
BE891432A
(en )
1982-06-10
PROCESS FOR THE REMOVAL OF MERCURY FROM INDUSTRIAL WASTEWATER
FR2667860B1
(en )
1992-11-27
PROCESS FOR BIOLOGICAL PURIFICATION OF WASTEWATER INCLUDING DENITRIFICATION.
RO79463A2
(en )
1983-07-07
PROCESS FOR BIOLOGICAL PURIFICATION OF WASTEWATER
FR2612915B1
(en )
1991-04-19
PROCESS FOR THE BIOLOGICAL PURIFICATION OF WASTEWATER CONTAINING DIETHANOLAMINE
FR2594112B1
(en )
1991-01-11
PROCESS AND INSTALLATION FOR BIOLOGICAL PURIFICATION OF WASTEWATER
FR2597088B1
(en )
1991-07-12
PROCESS FOR THE PURIFICATION OF WASTEWATER AND THE TREATMENT OF SLUDGE
FR2609979B1
(en )
1991-03-29
PROCESS AND DEVICE FOR THE PURIFICATION OF POLLUTED WATER
FR2518078B1
(en )
1986-08-29
WATER DENITRIFICATION PROCESS
FR2558819B1
(en )
1991-04-12
BIOLOGICAL PROCESS FOR SEWAGE TREATMENT WITH NITRIFICATION ZONE