William Scott Stewart
Pharmacy in Salt Lake City, UT
License number
Utah 361900-1717
Issued Date
Jul 22, 1998
Expiration Date
May 31, 2003
Category
Pharmacy
Type
Pharmacy Technician
Address
Address
Salt Lake City, UT
Personal information
See more information about William Scott Stewart at radaris.comName
Address
Phone
5152 N 4800 W, Benson, UT 84335
5237 W 1525 S, Cedar City, UT 84720
2465 Dutch Draw Dr, Salt Lake City, UT 84119
Professional information
Scum Removal System For Liquid Treatment Tank
US Patent:
6126824, Oct 3, 2000
Filed:
Oct 15, 1998
Appl. No.:
9/172833
Inventors:
Robert E. Hanford - Murray UT
Peter J. Bsumek - Salt Lake City UT
William C. Stewart - Murray UT
Peter J. Bsumek - Salt Lake City UT
William C. Stewart - Murray UT
Assignee:
Baker Hughes Incorporated - Houston TX
International Classification:
C02F 140
US Classification:
2102423
Abstract:
A scum removal system for a sewage treatment or clarification tank having a feedwell or skimmer flight includes a scum trough disposed within the settling tank. A floating weir is disposed proximate to the scum trough. A membrane or sheet is partially wrapped or wound about the weir, at least one cable being connected to the membrane for pulling the membrane and concomitantly lowering the weir entrained therewith to permit surface scum to enter the trough from the settling tank. A mechanism for exerting increased tension on the cable to thereby lower the weir below the surface of the liquid in the clarification tank includes a camming lever or arm and an actuator. The lever is connected to the cable, while the actuator is mounted to the feedwell or a skimmer wiper arm so as to engage the camming lever and pivot the actuator lever about an axis. The pivoting of the actuator lever increases tension on the cable and causes the cable to pull the floating weir down in opposition to buoyancy forces tending to drive the weir upwards.