ARTHUR A DEFRAITES
Engineers in Houma, LA
License number
Pennsylvania PE008074E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Houma, LA 70360
Pennsylvania
Pennsylvania
Professional information
Method Of Cleaning Boats That Have Been Contaminated With Oil And Gas Well Drilling Fluids And Hazardous Waste
US Patent:
5624502, Apr 29, 1997
Filed:
Oct 25, 1995
Appl. No.:
8/548143
Inventors:
Arthur A. Defraites - Houma LA
International Classification:
B08B 704
US Classification:
134 10
Abstract:
A system for cleaning vessels that have been contaminated with oil field drilling and production waste materials such as oil well drilling fluid or hazardous waste using recycled wash water. As dirty wash water accumulates in a vessel during cleaning, it is transferred to a settlement section of the waste receiving barge. A cationic polymer is injected into the suction side of a waste water pump during transfer of dirty fluid from the vessel to the receiving barge. The polymers react with fluids to begin an initial settling process within the waste receiving barge. Decant water is subjected to secondary settlement and secondary chemical treatment after it leaves the primary settling section of the waste receiving barge. The laundered water is returned to the wash water storage facility for reusing and cleaning the same vessel or additional vessels. In this fashion, waste is continuously concentrated in the receiving vessel for ultimate disposal at a remote site and wash water is recycled for reuse.
Method Of Cleaning Boats That Have Been Contaminated With Oil And Gas Well Drilling Fluids And Hazardous Waste
US Patent:
5908040, Jun 1, 1999
Filed:
Apr 23, 1997
Appl. No.:
8/842244
Inventors:
Arthur A. Defraites - Houma LA
International Classification:
B08B 704
US Classification:
134 10
Abstract:
A system for cleaning vessels that have been contaminated with oil field drilling and production waste materials such as oil well drilling fluid or hazardous waste using recycled wash water. As dirty wash water accumulates in a vessel during cleaning, it is transferred to a settlement section of the waste receiving barge. A cationic polymer is injected into the suction side of a waste water pump during transfer of dirty fluid from the vessel to the receiving barge. The polymers react with fluids to begin an initial settling process within the waste receiving barge. Decant water is subjected to secondary settlement and secondary chemical treatment after it leaves the primary settling section of the waste receiving barge. The laundered water is returned to the wash water storage facility for reusing and cleaning the same vessel or additional vessels. In this fashion, waste is continuously concentrated in the receiving vessel for ultimate disposal at a remote site and wash water is recycled for reuse.
Method And Apparatus For Treating Sewage
US Patent:
4209388, Jun 24, 1980
Filed:
Nov 6, 1978
Appl. No.:
5/958145
Inventors:
Arthur A. DeFraites - Houma LA
International Classification:
C02C 102
US Classification:
210 8
Abstract:
Steps are disclosed in a method for the complete treatment of sanitary sewage comprising water containing suspended or dissolved organic matter, the concentration of which is measured by biochemical oxygen demand (BOD). A part of the method relies upon a waste stabilization pond containing algae for aerobic decomposition of the organic matter, followed by removal of algae in a second algae removal pond. Another aspect of the invention is provision of a polishing pond constructed with a circumferential weir for maximizing exposure to sunlight and for aeration. A further aspect of the method of the invention involves optional provision of a facultative pond of increased capacity for reduction of BOD by use of combined aerobic and anaerobic treatment which avoids the drawbacks commonly associated with entirely anaerobic treatment processes.