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1987-11-16 |
Svenska Sockerfabriks Ab |
Forfarande for biologisk rening av kolhydrat- och/eller proteinrikt avloppsvatten
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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
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1976-04-12 |
1977-11-01 |
Air Products And Chemicals, Inc. |
Production of non-bulking activated sludge
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1976-05-12 |
1979-12-18 |
Dravo Corporation |
Apparatus for the treatment of wastewater
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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
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1976-10-29 |
1982-02-16 |
Celanese Corporation |
Anaerobic treatment
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1978-06-07 |
1979-12-13 |
Gubernatorova Geb Denisova |
Verfahren zur biologischen reinigung von abwaessern
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1979-02-06 |
1980-11-20 |
Bayer Ag |
Verfahren zur reinigung von abwasser mit einem hohen gehalt an stickstoffverbindungen
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1980-10-21 |
1983-11-15 |
Celanese Corporation |
Anaerobic treatment
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1981-08-03 |
1983-03-03 |
Passavant-Werke AG & Co KG, 6209 Aarbergen |
Anlage zur biologischen abwasserreinigung sowie verfahren zum betrieb der anlage
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1981-09-03 |
1983-04-07 |
Menzel Gmbh & Co, 7000 Stuttgart |
Verfahren zur biochemischen stoffumsetzung
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1982-03-06 |
1983-09-08 |
Volker Dipl.-Ing. 7200 Tuttlingen Stengelin |
Verfahren und vorrichtung zum entfernen des stickstoffs aus dem abwasser mittels tauchtropfkoerper
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1982-10-14 |
1984-04-19 |
Ballhaus, Heribert, Dipl.-Ing. Dr.-Ing, 7517 Waldbronn |
Geraet zur detektion von korrosionsschaeden an stahlseilfoerdergurten
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1986-09-12 |
1988-03-13 |
Vyrmetoder Ab |
Forfarande for rening av avloppsvatten innehallande nitrat och/eller nitrit
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2008-03-28 |
2014-11-25 |
Evoqua Water Technologies Llc |
Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
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2008-03-28 |
2009-10-01 |
Siemens Water Technologies Corp. |
Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
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2008-03-28 |
2014-11-25 |
Evoqua Water Technologies Llc |
Methods and systems for treating wastewater
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2009-12-03 |
2014-04-01 |
Evoqua Water Technologies Llc |
Systems and methods for nutrient removal in biological treatment systems
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2010-08-18 |
2016-06-07 |
Evoqua Water Technologies Llc |
Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
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2010-08-18 |
2012-02-23 |
Siemens Industry, Inc. |
Contact-stabilization/prime-float hybrid
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2013-05-06 |
2018-11-20 |
Evoqua Water Technologies Llc |
Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
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2015-02-23 |
2016-08-25 |
HAWK Hochschule für angewandte Wissenschaft und Kunst Fachhochschule Hildesheim/Holzminden/Göttingen |
Verfahren und Anlage zur Abwasserreinigung
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