GB2044746B
(en )
1983-04-20
Equipment for the biological purification of sewage
GB2044239B
(en )
1983-03-16
Apparatus for the treatment of sewage
YU139579A
(en )
1982-10-31
Arrangement for the biological purification of water
YU215578A
(en )
1983-04-30
Process for the purification of plant antocyanine dyestuffs
YU234378A
(en )
1982-06-30
Process for purifying 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
ZA783913B
(en )
1979-07-25
Biological denitrification of effluents
GR62641B
(en )
1979-05-15
Process for the purification of anthocyanes
SG21583G
(en )
1984-07-20
Process for the digestion of sludge
CH612160A5
(en )
1979-07-13
Process for the biological purification of effluent
ZA783253B
(en )
1980-01-30
Purification process
DE2860205D1
(en )
1981-01-08
Process for the purification of tetrahydrofuran
AU4094978A
(en )
1980-05-01
Chemical purification of water
YU246078A
(en )
1982-06-30
Process for the biological purification of waste water
YU61380A
(en )
1984-02-29
Process for the purification of mercaptobenzothiazoles
ZA786067B
(en )
1979-11-28
Process for the treatment of waste water
GB2008561B
(en )
1982-03-24
Wastewater purification
GB2071127B
(en )
1984-07-25
Process for the purification of glucosaninoglucans
YU21978A
(en )
1982-06-30
Process for the purification of waste gases
ZA771489B
(en )
1978-01-25
Process for the treatment of waste waters
DE3063699D1
(en )
1983-07-14
Process for the purification of water
ZA777726B
(en )
1978-10-25
Process for the biological purification of waters
ZA777363B
(en )
1978-10-25
Process for purifying waste waters
DE2861036D1
(en )
1981-11-26
Water purification process