SE405351C
(en)
*
|
1975-04-25 |
1987-06-10 |
Svenska Sockerfabriks Ab |
PROCEDURE FOR BIOLOGICAL CLEANING OF CARBOHYDRATE AND / OR PROTEINRIC WASTE WATER
|
US4043936A
(en)
*
|
1976-02-24 |
1977-08-23 |
The United States Of America As Represented By United States Energy Research And Development Administration |
Biological denitrification of high concentration nitrate waste
|
US4056465A
(en)
*
|
1976-04-12 |
1977-11-01 |
Air Products And Chemicals, Inc. |
Production of non-bulking activated sludge
|
US4179374A
(en)
*
|
1976-05-12 |
1979-12-18 |
Dravo Corporation |
Apparatus for the treatment of wastewater
|
CH621751A5
(en)
*
|
1976-09-24 |
1981-02-27 |
Attisholz Cellulose |
Process for the biochemical purification of waste water containing organic constituents which favour the undesirable development of filamentous bacteria and/or the formation of bulking sludge
|
US4315823A
(en)
*
|
1976-10-29 |
1982-02-16 |
Celanese Corporation |
Anaerobic treatment
|
DE2825007A1
(en)
*
|
1978-06-07 |
1979-12-13 |
Gubernatorova Geb Denisova |
Removal of nitrate(s) nitrite(s) and organic cpds. from waste water - by activated sludge treatment with added ammonia or urea
|
DE2904335A1
(en)
*
|
1979-02-06 |
1980-11-20 |
Bayer Ag |
METHOD FOR THE PURIFICATION OF WASTEWATER WITH A HIGH CONTENT OF NITROGEN COMPOUNDS
|
US4415453A
(en)
*
|
1980-10-21 |
1983-11-15 |
Celanese Corporation |
Anaerobic treatment
|
DE3130718A1
(en)
*
|
1981-08-03 |
1983-03-03 |
Passavant-Werke AG & Co KG, 6209 Aarbergen |
PLANT FOR BIOLOGICAL WASTEWATER TREATMENT AND METHOD FOR OPERATING THE PLANT
|
DE3134879A1
(en)
*
|
1981-09-03 |
1983-04-07 |
Menzel Gmbh & Co, 7000 Stuttgart |
METHOD FOR THE BIOCHEMICAL IMPLEMENTATION OF SUBSTANCES
|
DE3208173A1
(en)
*
|
1982-03-06 |
1983-09-08 |
Volker Dipl.-Ing. 7200 Tuttlingen Stengelin |
METHOD AND DEVICE FOR REMOVING THE NITROGEN FROM THE WASTEWATER BY MEANS OF A DIPPED BODY
|
DE3238089A1
(en)
*
|
1982-10-14 |
1984-04-19 |
Ballhaus, Heribert, Dipl.-Ing. Dr.-Ing, 7517 Waldbronn |
Apparatus for detecting corrosion damage on steel cable conveyor belts
|
SE8603843L
(en)
*
|
1986-09-12 |
1988-03-13 |
Vyrmetoder Ab |
PROCEDURE FOR WASTE WATER CLEANING INCLUDING NITRATE AND / OR NITRIT
|
US8623213B2
(en)
|
2008-03-28 |
2014-01-07 |
Siemens Water Technologies Llc |
Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
|
US8894856B2
(en)
|
2008-03-28 |
2014-11-25 |
Evoqua Water Technologies Llc |
Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
|
WO2011068931A1
(en)
|
2009-12-03 |
2011-06-09 |
Siemens Industry, Inc. |
Systems and methods for nutrient removal in biological treatment systems
|
EP2560922A4
(en)
|
2010-04-21 |
2015-10-07 |
Evoqua Water Technologies Pte Ltd |
Methods and systems for treating wastewater
|
US9359236B2
(en)
|
2010-08-18 |
2016-06-07 |
Evoqua Water Technologies Llc |
Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
|
WO2012024279A1
(en)
|
2010-08-18 |
2012-02-23 |
Siemens Industry, Inc. |
Contact-stabilization/prime-float hybrid
|
US10131550B2
(en)
|
2013-05-06 |
2018-11-20 |
Evoqua Water Technologies Llc |
Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
|
DE102015002395A1
(en)
*
|
2015-02-23 |
2016-08-25 |
HAWK Hochschule für angewandte Wissenschaft und Kunst Fachhochschule Hildesheim/Holzminden/Göttingen |
Process and plant for wastewater treatment
|