| Patent Number |
Title Of Patent |
Date Issued |
| RE35234 |
Modular air scrubber system |
May 14, 1996 |
| A modular air scrubber system is provided for removal of pollutants from air and includes a plurality of modular scrubbing towers adapted for side-by-side interconnection to provide multiple stage filtering of air to be treated, each tower having a lower reservoir portion for a scrubber |
| D361834 |
Air scrubber unit for use in the removal of pollutants from the air |
August 29, 1995 |
|
| D347469 |
Air scrubber unit for use in removal of pollutants from the air |
May 31, 1994 |
|
| 5599459 |
Method for sealing a traveling bridge filter backwash shoe |
February 4, 1997 |
| A traveling bridge filtration system includes a tank configured to include a plurality of side-by-side filter cells all extending longitudinally in a first direction, and a common filtrate channel extending longitudinally in a second direction perpendicular to the first direction. Each f |
| 5554281 |
Traveling bridge filter system and associated underdrain |
September 10, 1996 |
| A travelling bridge filtration unit includes a tank having a bottom wall, a pair of side walls and a pair of end walls arranged to provide a rectangular tank with an open top. An interior partition in the tank extends lengthwise between the pair of end walls forms a filtrate channel |
| 5545334 |
Method for sealing a traveling bridge filter backwash shoe |
August 13, 1996 |
| A traveling bridge filtration system includes a tank configured to include a plurality of side-by-side filter cells all extending longitudinally in a first direction, and a common filtrate channel extending longitudinally in a second direction perpendicular to the first direction. Each f |
| 5476584 |
Backwash/rewash traveling bridge filter and related process |
December 19, 1995 |
| A method of cleaning a filtration tank having a plurality of side-by-side gravity flow filter cells, each having an outlet port in communication with a filtrate channel common to all of the cells in an automatic backwash/rewash system, by subjecting each compartment, sequentially, to a |
| 5431809 |
Apparatus for sealing a traveling bridge filter backwash shoe |
July 11, 1995 |
| A traveling bridge filtration system includes a tank configured to include a plurality of side-by-side filter cells all extending longitudinally in a first direction, and a common filtrate channel extending longitudinally in a second direction perpendicular to the first direction. Each f |
| 5401405 |
Combined air/water backwash in a travelling bridge filter |
March 28, 1995 |
| In a travelling bridge filtration system including a tank divided into a plurality of adjacent filter cells, each of the cells containing filter media, a travelling bridge carriage located above the tank and movable along the tank, the carriage supporting a backwash hood engageable with |
| 5307697 |
Continuous, automated, multi-stream sample collection and analysis |
May 3, 1994 |
| In the treatment of sewage, fresh, representative samples are continuously collected and analyzed at a number of different points in a sewage treatment reservoir. A submersible grinder pump is connected by a sample supply conduit to a continuous flow through filter, and ground sewage |
| 5094752 |
Aerobic wastewater treatment with alkalinity control |
March 10, 1992 |
| Aerobic wastewater treatment processes are controlled utilizing alkalinity measurements. A base line of alkalinity is determined by measuring the alkalinity profile of the influent to the aerobic wastewater treatment process. The alkalinity of the wastewater is sensed at a number of |
| 5013442 |
Aerobic wastewater treatment with alkalinity control |
May 7, 1991 |
| Aerobic wastewater treatment processes are controlled utilizing alkalinity measurements. A base line of alkalinity is determined by measuring the alkalinity profile of the influent to the aerobic wastewater treatment process. The alkalinity of the wastewater is sensed at a number of |
| 4988439 |
Two stage traveling bridge filter |
January 29, 1991 |
| A liquid filtration system is provided which includes a traveling bridge carriage mounting air scour and backwash means within a single hood structure for successively cleaning each of a plurality of roughing filter cells and polishing filter cells formed in a filtration tank. The air |
| 4948402 |
Modular air scrubber system |
August 14, 1990 |
| A modular air scrubber system is provided for removal of pollutants from air and includes a plurality of modular scrubbing towers adapted for side-by-side interconnection to provide multiple stage filtering of air to be treated, each tower having a lower reservoir portion for a scrubber |
| 4859330 |
Traveling bridge filter with air scour |
August 22, 1989 |
| A liquid filtration system is provided which includes a traveling bridge device mounting air scour and backwash means for successively cleaning each of a plurality of filter cells formed in a filtration tank. The air scour means includes a first hood open to atmosphere and adapted for |
