Stephen Dudley Field
Engineering at Harrells Fry Rd, Baton Rouge, LA
License number
Louisiana PE.0021313
Issued Date
Jul 24, 1984
Expiration Date
Sep 30, 2018
Category
Civil Engineer
Type
Civil Engineer; Environmental Engineer
Address
Address
14666 S Harrells Ferry Rd, Baton Rouge, LA 70816
Professional information
Engineer And Principal, Compliance Consultants, Inc.
Position:
Engineer at Compliance Consultants, Inc.
Location:
Baton Rouge, Louisiana Area
Industry:
Civil Engineering
Work:
Compliance Consultants, Inc.
since Sep 1990
-
Engineer
LSU
1981 - 1990
-
Associate Professor
Education:
Syracuse University 1980
PhD, Civil/Environmental Engineering
PhD, Civil/Environmental Engineering
Skills:
Environmental Engineering, Water Treatment, Wastewater Treatment, Biotechnology, Mathematical Modeling, Civil Engineering, Stormwater Management, Engineering, Road, Sewer, Hydrology, Drainage, Subdivisions, Contractors, Remediation
Process And Equipment For Electrochemical Dual Phase Concentration, Collection And Removal Of Ions
US Patent:
6241872, Jun 5, 2001
Filed:
Jul 27, 1999
Appl. No.:
9/361241
Inventors:
Robert E. Marks - Baton Rouge LA
Stephen D. Field - Baton Rouge LA
Mary Madden Field - Baton Rouge LA
Stephen D. Field - Baton Rouge LA
Mary Madden Field - Baton Rouge LA
Assignee:
Compliance Consultants, Inc. - Baton Rouge LA
International Classification:
C02F 146
US Classification:
205702
Abstract:
A method and apparatus concentrates, collects and removes heavy metals, other cations, and anions from media permitting generation of electrical fields. The heavy metals and other cations are electrochemically concentrated and precipitated for rapid removal from the aqueous media. The media, which may be aqueous, soils or wastes, is filtered and passed through a cation or anion exchange resin beds. Metals or anions are captured and held in the resin beds. Current is then applied through the resin beds using opposing electrodes of opposite polarity. In the metal removal units, heavy metals and other cations are concentrated around the negative electrode and lifted to a top of the electrode chamber using hydrogen gas lift. The concentrated solution of heavy metals and cations are removed from the chamber above the negative electrode and are circulated to provide additional time for growth and precipitation.
Equipment For Electochemical Collection Removal Of Ions
US Patent:
6074537, Jun 13, 2000
Filed:
Apr 29, 1997
Appl. No.:
8/848154
Inventors:
Robert E. Marks - Baton Rouge LA
Stephen D. Field - Baton Rouge LA
Mary Madden Field - Baton Rouge LA
Stephen D. Field - Baton Rouge LA
Mary Madden Field - Baton Rouge LA
Assignee:
Compliance Consultants, Inc. - Baton Rouge LA
International Classification:
C02F 1461
US Classification:
204263
Abstract:
A method and apparatus concentrates, collects and removes heavy metals, other cations, and anions from media permitting generation of electrical fields. The heavy metals and other cations are electrochemically concentrated and precipitated for rapid removal from the aqueous media. The media, which may be aqueous, soils or wastes, is filtered and passed through a cation or anion exchange resin beds. Metals or anions are captured and held in the resin beds. Current is then applied through the resin beds using opposing electrodes of opposite polarity. In the metal removal units, heavy metals and other cations are concentrated around the negative electrode and lifted to a top of the electrode chamber using hydrogen gas lift. The concentrated solution of heavy metals and cations are removed from the chamber above the negative electrode and are circulated to provide additional time for growth and precipitation. Once in a crystalline structure or precipitated form, the elemental metals and metal hydroxides are separated from the aqueous phase using a trap, which retains the crystallates and precipitates.