GB2306466B
(en )
1999-07-07
Improvements in the treatment of sewage and waste water
EP0470931A3
(en )
1992-05-13
Soil and waste water treatment
ZA898818B
(en )
1991-12-24
Biological treatment of waste water
CS297390A3
(en )
1992-12-16
Process of destroying toxic and biologically non-degradable organicsubstances in waste water or sewage
GB2284906B
(en )
1998-01-07
Production of water and wastewater treatment plant
GB2315264B
(en )
1999-07-07
Improvements in treatment of sewage and waste water
PL295293A1
(en )
1993-02-22
Method of biologically treating waste waters in particular communal ones
GB2297500B
(en )
1997-09-17
Waste water treatment plant and method for use therein
GB9001757D0
(en )
1990-03-28
Treatment of sewage and like waste liquids
GB9300886D0
(en )
1993-03-10
Treatment of sewage and like waste liquids
PL288878A1
(en )
1992-08-10
Method of biologically treating waste waters and biological treatment plant therefor
PL274060A1
(en )
1990-02-19
Oxidation ditch for complete biological treatment of communal and industrial waste waters
PL288872A1
(en )
1992-08-24
Method of and tank for biologically treating waste waters
PL284007A1
(en )
1991-09-09
Method of treating communal waste waters and two-stage combined biological treatment plant therefor
PL288090A1
(en )
1992-06-15
Method of biologically treating surface waters and biological barrier therefor
HU901331D0
(en )
1990-05-28
Process for anaerobic-aerobic biological purification of sewage and refuse water comprising many organics
GB9101351D0
(en )
1991-03-06
Treatment of sewage and like waste liquids
HU900244D0
(en )
1990-03-28
Treating workshop of watery waste and/or of dung water
PL287547A1
(en )
1992-05-04
Mechanical and biological sewage treatment plant with active sludge zones
CS108188A1
(en )
1990-07-12
Method of organically polluted sewage waters' biological treatment
PL287891A1
(en )
1992-06-01
Method of biologically treating waste waters by aerobic process and agent speeding up the aerobic treatment process
GB9201109D0
(en )
1992-03-11
Treatment of sewage and like waste liquids
PL300050A1
(en )
1995-02-20
Mechanical and biological sewage treatment plant
PL290654A1
(en )
1992-12-14
Method of completely biologically treating waste waters using biological beds
PL300569A1
(en )
1995-04-03
Two-phase sludge hygenizing method for use in municipal sewage and meat processing plant waste water treatment plants