QED Environmental Systems, Inc articles
A former industrial plant and top Superfund site in Sydney, Australia, had been in operation since the 1930s and contained chlorinated solvent contamination. Because of the size and scope of this project packed towers traditionally would have been the air stripping method of choice, but the client was concerned about the ability of workers having easy access to maintain and clean the units. They also wanted to lower the process water pH to 2.5-2.0 in order to keep fouling from occurring
AutoTracker™ (U.S. Patent Number 6,520,259) Floating Extraction Inlets were added to a DPE system at a remediation site in mid-Michigan following several years of operational problems caused by fluctuating water table levels. Installation was straightforward and system performance improved immediately, reducing on-site maintenance, labor and O&M costs and greatly improving groundwater recovery. Ongoing savings were so dramatic that payback for the initial capital cost was achi
QED Pumps are the Pumps of Choice at North America`s Largest Landfill
The Puente Hills Landfill in Los Angeles County, California, is the largest operating landfill in North America based on daily tonnage received. Located in an unincorporated area of Los Angeles County near Whittier, California, it is owned and operated by the Sanitation Districts of Los Angeles County. It has received approximately 118 million tons of solid waste as of April 2008, raising the origin
QED`s AutoPump® Can Endure Tough Conditions to Deliver Superior Thermally Enhanced NAPL Recovery
The site of a former U.S. Department of Energy (DOE) nuclear weapons production facility (the Pinellas Plant) in Largo, Florida posed an extreme challenge for groundwater remediation pumps. Soil and surficial aquifers at the site, now known as the Young-Rainey Science, Technology, and Research Center, were contaminated by large quantities of light and dense non-aqueous phase liquids
AutoPump Integral to Innovative Steam Injection Process Used to Clean Up DOE Facility in Ohio
SteamTech Inc. of Bakersfield, California, a 35-year-old firm with roots in the oil field industry, is working for Bechtel-Jacobs at the Gaseous Diffusion plant in Piketon, Ohio. Bechtel-Jacobs considered several innovative remediation technologies and chose the steam injection process developed by SteamTech in conjunction with individuals associated with the University of
Green Bay adds Gas-to-Energy Facility to 30-year-old Landfil
Brown County East Landfill in Green Bay, Wisconsin recently completed a feasibility study that determined it would be economically sound to convert methane gas into electrical energy by electric generators to the site. Two new Cat 3516A+ engines are projected to come on line in December of this year, housed in a new 30 x 100 foot building that will also contain the other gas processing equipment. "We will be
QED E-Z Tray® Air Stripper Treating Drinking Water with 99% Removal in Cedarburg, Wisconsin
In October 2011, the Cedarburg, Wisconsin Light and Water Utility installed a QED E-Z Tray® (U.S. Patent Number 5,518,668) Air Stripper in a discreet addition to their existing production pump building. The E-Z Tray 72.6 handles a flow rate of 600 gpm and treats groundwater containing vinyl chloride that has been traced ba
During 2011, four QED Precision Fine Tune Control Valves™ were installed in wells at a south Texas landfill.
The following graphs show the composition of the landfill gas and flow data before and after the installation of the Control Valves in Wells 07, 54, 78, and 90. The closest neighboring well on the same trunk line, using a gate valve for flow control, was also chosen for an additional comparison. The screen shot (at right) shows the increase in value of the methane produce
E-Z Tray® (U.S. Patent Number 5,518,668) Air Strippers have always been known for their ease of access and cleaning, but for this special site, an old industrial building in Brooklyn, New York, they also had to be installed without the use of any heavy equipment. The site was using a competitor`s air stripper on the second floor of an older building and the units had become very corroded. The site managers never liked the disassembly process of the old units for cleaning, so wh
Treating a Gasoline Spill in New York Overview
- Gasoline spill in high value residential area.
- Space for process equipment limited.
- Need for low profile - sound and appearance.
- Strippers housed in metal shipping containers.
The sliding tray, compact design of E-Z Tray® (U.S. Patent Number 5,518,668) Air Strippers allowed a major petroleum company to install a large remediation system in a high-end residential