JPS5290164A
(en)
*
|
1976-01-23 |
1977-07-28 |
Kurita Water Ind Ltd |
Method for treating water containing 6 valment chromium
|
US5116511A
(en)
*
|
1991-02-22 |
1992-05-26 |
Harrison Western Environmental Services, Inc. |
Water treatment system and method for operating the same
|
US5310486A
(en)
*
|
1993-05-25 |
1994-05-10 |
Harrison Western Environmental Services, Inc. |
Multi-stage water treatment system and method for operating the same
|
IT1282653B1
(it)
*
|
1996-02-20 |
1998-03-31 |
Bracco Spa |
Dispositivo e metodo per la rigenerazione di letti misti di resine a scambio ionico
|
US6036866A
(en)
*
|
1997-03-10 |
2000-03-14 |
Ecodyne Water Treatment, Inc. |
Apparatus and method for fluid treatment units connected in parallel
|
US6666971B2
(en)
|
1999-04-02 |
2003-12-23 |
Petreco International Inc. |
Method for utilizing regenerated waste from water softeners used for steam flood operations
|
US7476311B2
(en)
*
|
2001-09-26 |
2009-01-13 |
Wrt International Llc |
Arsenic removal from aqueous media using chemically treated zeolite materials
|
US7108784B1
(en)
*
|
2001-09-26 |
2006-09-19 |
Wrt International Llc |
Apparatus for removal and destruction of ammonia from an aqueous medium
|
US9908788B1
(en)
|
2001-09-26 |
2018-03-06 |
Wrt International Llc |
Radium removal from aqueous media using zeolite materials
|
US7105087B2
(en)
*
|
2002-09-17 |
2006-09-12 |
Wrt International Llc |
Hexa-valent chromium removal from aqueous media using ferrous-form zeolite materials
|
US7390414B2
(en)
*
|
2002-09-25 |
2008-06-24 |
Wrt International Llc |
Regeneration of chemically treated zeolite
|
US20050067341A1
(en)
*
|
2003-09-25 |
2005-03-31 |
Green Dennis H. |
Continuous production membrane water treatment plant and method for operating same
|
US7326347B2
(en)
*
|
2003-10-29 |
2008-02-05 |
Wrt International Llc |
Dynamic up-flow zeolite system and method
|
CA2606190A1
(en)
*
|
2005-04-27 |
2006-11-02 |
Hw Process Technologies, Inc. |
Treating produced waters
|
US20070215552A1
(en)
*
|
2005-09-16 |
2007-09-20 |
Wrt International Llc. |
Systems and methods for removal of contaminates from an aqueous media in the absence of modified nitrate levels
|
US7520987B1
(en)
|
2005-11-15 |
2009-04-21 |
Wrt International Llc |
System and apparatus for purging absorptive materials used in the removal of contaminates from an aqueous medium
|
WO2007130851A2
(en)
*
|
2006-04-29 |
2007-11-15 |
Electrolytic Technologies Corporation |
Process for the on-site production of chlorine and high strength hypochlorite
|
US20080069748A1
(en)
*
|
2006-09-20 |
2008-03-20 |
Hw Advanced Technologies, Inc. |
Multivalent iron ion separation in metal recovery circuits
|
US8663479B2
(en)
*
|
2006-11-20 |
2014-03-04 |
Wrt International Llc |
Method for removing cationic contaminants from water using natural zeolite underloaded with transition metal ions to limit leakage of intrinsic arsenic therefrom
|
US20080128354A1
(en)
*
|
2006-11-30 |
2008-06-05 |
Hw Advanced Technologies, Inc. |
Method for washing filtration membranes
|
DE102013012202A1
(de)
*
|
2013-07-23 |
2015-01-29 |
Veolia Water Solutions & Technologies Support |
Verfahren zum Regenerieren eines Mischbettfilters und Vorrichtung zur Ausführung eines solchen Verfahrens
|