HU171712B
(hu )
1978-03-28
Ustanovka dlja biologicheskoj obrabotki stochnoj vody
IL51663A0
(en )
1977-05-31
Method of treating sewage by the activated sludge process
GB2032904B
(en )
1982-10-13
Activated sludge sewage treatment process
ZA754050B
(en )
1976-06-30
Process for conditioning sewage sludge
CA1011054A
(en )
1977-05-31
Sewage treatment device
ZA738884B
(en )
1974-12-24
Non-bulking activated sludge process
AU2907977A
(en )
1979-03-29
Unit for wastewater treatment by microorganisms
CS178921B2
(en )
1977-10-31
Method for waste water treatment
AU6792174A
(en )
1975-10-16
Waste water treatment process
CS187380B2
(en )
1979-01-31
Sewage treatment method and device for making the said method
ZA747523B
(en )
1976-01-28
Sewage treatment plant
IL47073A0
(en )
1975-06-25
Process for the purification of waste waters
CS180747B1
(en )
1978-01-31
Device for waste water treatment by the activated sludge process with variable trough-flow system
JPS5256760A
(en )
1977-05-10
Waste water purifying device that use activated sludge
JPS5328962A
(en )
1978-03-17
Sewage treating apparatus by activated sludge
GB1403664A
(en )
1975-08-28
Apparatus for continuously dehydrating sewage sludge or the like
IL47536A
(en )
1978-07-31
Activated sludge sewage treatment process
JPS531966A
(en )
1978-01-10
Waste water treating apparatus by active sludge
JPS5265967A
(en )
1977-05-31
Purifying tank for sewage treatment
ZA74606B
(en )
1974-11-27
Liquid waste treatment apparatus
GB2028790B
(en )
1982-11-03
Activated sludge sewage treatment apparatus
SU501977A1
(ru )
1976-02-05
Способ обработки осадка сточных вод
CS183102B1
(en )
1978-05-31
Device for waste water treatment by flowing method
AU4774572A
(en )
1974-04-26
Process for preparing wastewater sludge resulting from purification plants, and apparatus to carryout the process
AU7702674A
(en )
1976-07-01
Sewage treatment