AR242940A1
(es )
1993-06-30
Metodo para tratar lodos de aguas de desecho para suministrar un fertilizador.
AR245081A1
(es )
1993-12-30
Un metodo para la detoxificacion de barros cloacales.
PL272533A2
(en )
1989-02-20
Method of recovering lanthanides from phospogypsum wastes
CS708489A2
(en )
1990-10-12
Method of waste waters treatment
ZA90298B
(en )
1990-10-31
Method of discriminating recovered containers
GB8824443D0
(en )
1988-11-23
Method of water desalination particularly mining waters
GB2218110B
(en )
1991-06-12
Flushing block for introducing gases or solids into a treatment vessel
RO101619B1
(en )
1992-05-05
Chrome subsalts recovery method out of tannage residual waters
RO100818B1
(en )
1992-09-10
Double purification method for residual waters
CS361488A1
(en )
1989-09-12
Method of waste waters purification
CS518988A1
(en )
1990-08-14
Method of coking waste waters biological ammonia removal
CS242788A1
(en )
1989-09-12
Method of waste waters treatment
PL275856A1
(en )
1990-05-28
Method of utilizing waste rocks
CS828087A1
(en )
1989-09-12
Method of waste waters purification or preliminary purification
CS651588A1
(en )
1989-11-14
Method of cyanides removal from waste waters
CS598188A1
(en )
1989-09-12
Method of waste waters treatment during antroquinone dyes production
RO101296B1
(en )
1992-11-03
Sulphides removal and recovery from waste waters method
PL293586A1
(en )
1993-09-06
Method of desalting mine waters
EG18709A
(en )
1993-12-30
Method of treating wastewater sludge
PL264215A2
(en )
1988-03-31
Method of completely wastelessly utilizing salt waters and effluents and apparatus therefor
PL267710A1
(en )
1989-04-17
Method of cooling cokery waste waters
CS828987A1
(en )
1989-05-12
Method of tensides removal from waste waters
PL271519A3
(en )
1989-10-02
Method of treating industrial waters
HU9300393D0
(en )
1993-04-28
Method for utilizing sludges of municipial waste water
ZA893755B
(en )
1990-02-28
Waste water recovery