AT327114B
(en )
1976-01-12
SYSTEM FOR BIOLOGICAL-MECHANICAL PURIFICATION OF WASTE WATER
AT333210B
(en )
1976-11-10
DEVICE FOR BIOLOGICAL WASTE WATER TREATMENT
AT328983B
(en )
1976-04-26
METHODS FOR TREATMENT OF SEWAGE SLUDGE OR FACALIA
AT324971B
(en )
1975-09-25
PROCEDURE FOR BIOLOGICAL PURIFICATION OF WASTE WATER AND SYSTEM FOR CARRYING OUT THE PROCESS
AT335931B
(en )
1977-04-12
REACTOR FOR BIOLOGICAL WATER TREATMENT
AT321830B
(en )
1975-04-25
Process for the dephenolation of waste water
AT337112B
(en )
1977-06-10
PROCESS AND SYSTEM FOR PURIFYING WASTE WATER
AT348950B
(en )
1979-03-12
PROCEDURE FOR BIOLOGICAL PURIFICATION OF CARBON HYDRATE OR PROTEIN-RICH WASTE WATER
NL7508338A
(en )
1976-01-20
METHOD FOR PURIFICATION OF WASTE WATER.
AT295423B
(en )
1972-01-10
Purification system for the biological purification of waste water
IT975772B
(en )
1974-08-10
PROCEDURE FOR THE BIOLOGICAL PURIFICATION OF WASTE WATER
AT363871B
(en )
1981-09-10
WASTEWATER PURIFICATION PLANT
AT321835B
(en )
1975-04-25
Process for the biological purification of waste water and plant for carrying out the process
ATA351775A
(en )
1978-02-15
METHOD FOR PURIFYING CHROMATIC WASTE WATER
AT324972B
(en )
1975-09-25
PROCESS AND SYSTEM FOR THE PURIFICATION OF WASTE WATER WITH ACTIVATED SLUDGE
AT324969B
(en )
1975-09-25
METHOD FOR ELECTROCHEMICAL PURIFICATION OF WASTE WATER
ATA416278A
(en )
1979-08-15
METHOD FOR BIOLOGICAL PURIFICATION OF WASTE WATER
AT333676B
(en )
1976-12-10
PROCESS FOR BIOLOGICAL PURIFICATION OF WASTE WATER AND SYSTEM FOR CARRYING OUT THE PROCESS
ATA740774A
(en )
1976-05-15
TROPPER SYSTEM FOR BIOLOGICAL PURIFICATION OF WASTE WATER
CH543456A
(en )
1973-10-31
Process for purifying waste water
IT1054629B
(en )
1981-11-30
PROCEDURE FOR CHEMICAL PURIFICATION OF WASTE WATER
AT328383B
(en )
1976-03-25
SUBMERSIBLE DRIP FOR BIOLOGICAL PURIFICATION OF WASTE WATER
AT291139B
(en )
1971-07-12
Device for the biological purification of waste water
AT346256B
(en )
1978-11-10
DEVICE FOR THE BIOLOGICAL PURIFICATION OF WASTE WATER
AT311276B
(en )
1973-11-12
Method and device for the purification of waste water