JPS54117154A
(en )
1979-09-11
Biological purifier of waste water
YU139579A
(en )
1982-10-31
Arrangement for the biological purification of water
DE2862070D1
(en )
1982-12-02
Biological treatment of waste water
JPS55116409A
(en )
1980-09-08
Water purifying plant
JPS5586511A
(en )
1980-06-30
Mechanical purifier of waste water
DE2860355D1
(en )
1981-03-12
Process for the biological purification of waste water
GB2033769B
(en )
1982-12-08
Method of purifying waste water
AU560375B2
(en )
1987-04-02
Method and plant for the biological purification of waste water
JPS54117155A
(en )
1979-09-11
Biological purifying method of waste water
IT7919640A0
(en )
1979-01-26
WASTE WATER PURIFICATION PLANT ACCORDING TO THE ACTIVATED SLUDGE PROCEDURE.
JPS5499347A
(en )
1979-08-06
Method of purifying waste water containing phosphorus by microorganisms
YU263579A
(en )
1982-08-31
Device for biological purification of waste water
JPS553900A
(en )
1980-01-11
Biological purifier of waste water
YU213681A
(en )
1983-12-31
Process for the purification of waste water
GB2038648B
(en )
1983-06-15
Purifying waste water
FR2503131B1
(en )
1985-08-30
PLANT FOR BIOLOGICAL PURIFICATION OF WATER
YU3680A
(en )
1983-02-28
Plant for the biological purification of waste water up to 2500 equivalents of inhabitants
DE2962675D1
(en )
1982-06-24
A plant for biological purification of waste water
IT8348752A0
(en )
1983-07-27
PLANT FOR THE BIOLOGICAL PURIFICATION OF WATER
YU246078A
(en )
1982-06-30
Process for the biological purification of waste water
IL58591A0
(en )
1980-01-31
The purification of waste water containing organic phosphorus and sulphur compounds
JPS54131348A
(en )
1979-10-12
Biological denitrification method of waste water
SU700464A1
(en )
1979-11-30
Method of biological purification of waste water
IT8823156A0
(en )
1988-12-29
PLANT FOR THE MECHANICAL-BIOLOGICAL PURIFICATION OF WASTE WATER
GB8308268D0
(en )
1983-05-05
Equipment for biological purification of waste water