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US 2010/0145113 A1Published application
System and method for treating groundwater
AssigneeSiemens Water Technologies Corp.
InventorsGregory Bachman, Timothy J. Peschman, Douglas C. Kellogg, Jeffrey J. Ogle
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Abstract
A method and apparatus for removing fluorinated hydrocarbons and/or perchlorate species from groundwater which can utilize ion exchange media comprising a hydrophobic polymeric matrix. Fluorinated hydrocarbons can be reduced to a parts per trillion level and perchlorate to a low parts per billion level, rendering the groundwater suitable for consumption as drinking water under regulatory standards.
Claims28
A method of treating groundwater comprising:
- providing groundwater containing at least one fluorinated hydrocarbon species at a concentration of less than about 250 parts per billion, the at least one fluorinated hydrocarbon species comprising at least one of PFOA and PFOS;
- and
- contacting the groundwater to be treated with ion exchange media, the ion exchange media having a hydrophobic polymeric matrix.
A system for treating groundwater comprising:
- a source of groundwater containing at least one fluorinated hydrocarbon species at a concentration of less than about 250 parts per billion, the at least one fluorinated hydrocarbon species selected from the group consisting of PFOA and PFOS;
- a vessel containing ion exchange media in fluid communication with the source of groundwater to be treated, the ion exchange media having a hydrophobic polymeric matrix;
- and
- a sensor disposed to provide a representation of a concentration of at least one fluorinated hydrocarbon species in water at a location downstream of the vessel.
1 more element
A system for treating water comprising:
- a source of groundwater containing at least one fluorinated hydrocarbon species at a concentration of less than about 250 parts per billion;
- an ion exchange bed in fluid communication with the source of groundwater comprising ion exchange media having functional moieties on a hydrophobic polymer matrix, the functional moieties selected from the group consisting of hydroxide, sulfate, and chloride forms of any of tri-ethyl amine, tri-propyl amine, and tri-butyl amine functional groups.
Dependencies are inferred from the claim text.