GB2021549B
(en )
1982-09-29
Apparatus for the anaerobic purification of waste water
YU139579A
(en )
1982-10-31
Arrangement for the biological purification of water
ZA786645B
(en )
1979-10-31
Device for complete desalination of water
YU234378A
(en )
1982-06-30
Process for purifying waste water
DE2963282D1
(en )
1982-08-26
Apparatus for biological purification of waste water
GB2001617B
(en )
1982-01-20
Apparatus for increasing the ph of waste water
DE2860355D1
(en )
1981-03-12
Process for the biological purification of waste water
NO151700C
(no )
1985-05-22
Fremgangsmaate for biologisk denitrifisering av avloepsvann
YU263579A
(en )
1982-08-31
Device for biological purification of waste water
YU246078A
(en )
1982-06-30
Process for the biological purification of waste water
IT7820456A0
(it )
1978-02-21
Dispositivo per la depurazione biologica di acqua di rifiuto.
AU4106878A
(en )
1980-05-01
Process for the oxidative purification of waste water
IT1188843B
(it )
1988-01-28
Dispositivo per la depurazione biologica di acque di rifiuto
JPS54110655A
(en )
1979-08-30
Denitrification device of waste water
CS193906B1
(en )
1979-11-30
Device for the biological purification of waste water
JPS5473462A
(en )
1979-06-12
Facility for biological treatment of waste water
GB1544341A
(en )
1979-04-19
Biological waste water treatment
JPS53108662A
(en )
1978-09-21
Device for purifying waste water
JPS5346166A
(en )
1978-04-25
Biological treatment of waste water
JPS53118860A
(en )
1978-10-17
Device for purifying waste water
JPS53110253A
(en )
1978-09-26
Device for purifying waste water
JPS53126762A
(en )
1978-11-06
Device for rapidly purifying organic waste water
YU139479A
(en )
1982-10-31
Reactor for the biological purification of waste water
ZA777726B
(en )
1978-10-25
Process for the biological purification of waters
JPS547763A
(en )
1979-01-20
Device for purifying combinged sewage