EP0218253A3
(en )
1987-10-28
Process and aerator apparatus for aerobic biological treatment
ZA86245B
(en )
1986-08-27
Method and apparatus for biological aerobic wastewater treatment
ZA861402B
(en )
1986-10-29
Process and apparatus for the biological purification of wastewater
GB2177129B
(en )
1988-10-05
Method and apparatus for the treatment of waste paper
CS708489A2
(en )
1990-10-12
Method of waste waters treatment
PL255336A1
(en )
1987-04-06
Apparatus for biological denitrification and dephosphatation of waste waters
GB2183625B
(en )
1990-05-16
Apparatus for the anaerobic treatment of waste water
EP0226715A3
(en )
1988-04-06
Process and apparatus for the biological denitrification of water
GB2164641B
(en )
1988-12-29
Method and apparatus for the biological treatment of sewage
HU208658B
(en )
1993-12-28
Biological method for increasing of efficiency of sewage uatercleaning and/or mud-cure
GR870485B
(en )
1987-04-30
Process for sewage and sludge treatment
PL276822A1
(en )
1989-08-21
Apparatus for mechanically and biologically treating waste waters
GB8716573D0
(en )
1987-08-19
Biological purification of waste waters
PL241249A1
(en )
1984-06-18
Method of biological sewage-treatment and apparatus therefor
HUT44984A
(en )
1988-05-30
Process and apparatus for biological cleaning waste waters
PL141053B2
(en )
1987-06-30
Apparatus for biologically treating waste waters
PL269849A1
(en )
1989-07-10
Apparatus for bilogically denitrifying and dephosphating waste waters
HRP920636A2
(en )
1996-06-30
Method and apparatus for biological purification of wastewater with no excess activated sludge
CS518988A1
(en )
1990-08-14
Method of coking waste waters biological ammonia removal
BG43766A1
(en )
1988-08-15
Method for biological cleaning of waste waters
IL79152A0
(en )
1986-09-30
Method and device for waste treatment
YU43591B
(en )
1989-08-31
Process for de-manganizing or parallel de-manganizing and de-ironing of waters
CS164887A1
(en )
1990-05-14
Method of waste waters biological treatment from organical compounds and nitrogen
PL238955A1
(en )
1984-07-02
Method of biological sewage treatment and unit therefor
HU207273B
(en )
1993-03-29
Apparatus for dehydrating slimes first of all slimes of waste waters