AR242940A1
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1993-06-30
Metodo para tratar lodos de aguas de desecho para suministrar un fertilizador.
EP0257983A3
(en )
1988-09-14
Method for treating waste water
EP0301924A3
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1989-06-07
Waste water treating process
GB2196955A
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1988-05-11
Process for treating waste water
PH30783A
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1997-10-17
Method for treatment of waste water by activated sludge process.
PH25521A
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1991-07-24
Method for treatment of waste water by activated slduge process
CS274556B2
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1991-08-13
Method of waste waters treatment
GB2276876B
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1996-10-30
Process for treatment of sewage sludge
ZA972606B
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1998-09-28
Method of treatment of waste water
LTIP1750A
(en )
1995-07-25
Method for biological treatment of waste water
EP0469443A3
(en )
1992-05-27
Method of treating waste
CS124490A2
(en )
1991-10-15
Method of waste water treatment during metallic molybden winning from waste sludge
EP0429661A4
(en )
1991-12-11
Method of water treatment
PL296963A1
(en )
1994-06-13
Method of obtaining organomineral fertilizer from centrifugal waste treatment sludge
GB8929341D0
(en )
1990-02-28
Method of water treatment
PL286647A1
(en )
1992-03-23
Water treatment method through utilization of waste water from treatment
EG18709A
(en )
1993-12-30
Method of treating wastewater sludge
CS402690A3
(en )
1992-04-15
Process of sewage water treatment
CS291589A1
(en )
1989-12-13
Method of waste zinc treatment
LTIP1880A
(en )
1995-09-25
Method for treatment of waste water or sewage
CS363389A1
(en )
1990-08-14
Method of waste waters treatment from technological processes of silvering
GB9213254D0
(en )
1992-08-05
Waste water treatment process
CS164488A1
(en )
1989-07-12
Method of waste sludge water treatment from asbestos-cement production
CS242788A1
(en )
1989-09-12
Method of waste waters treatment
GB2218084B
(en )
1992-03-25
Effluent treatment of waste water