|
|
|
|
|
|
|
|
| |||
|
|
In the spring of 1996 Wastewater Resources was selected by OHM Remediation Services and Pacific Mechanical Contractors to provide the multimedia filtration, control system, and lift station interface for Site 27 of the Nellis Remediation Contract by the U.S. Army Corps of Engineers.
 The company completed the intial design and constructed three 72" diameter multimedia filters for use at the site as the final filtration step in the remediation of groundwater contaminated by jet fuel. The system included an Allen Bradley SLC500 microprocessor control center to operate the entire facility and interlink the lift station for final effluent removal. 
The system was equiped with automated backwash and digital instrumentation including the standard WRI touch screen operator interface. The multimedia filters were installed turn key by WRI and all training on system and plant operation was done by Wastewater Resources.
 All pipe supports and intersystem pipe was fabricated and installed by WRI. Notice the self-contained air conditioned control center to the left of this photo. The Ccorps has contracted for media replacement and operator training with WRI in its 1997 budget for the facility. 
The Effluent lift pumps are interlinked to the PLC and act as backwash supply pumps for the automated individual vessel backwash. A backwash decant tank is included at the site and is controled for decant drain valve sequence. This type extended shaft dual lift station is a feature on many WRI treatment systems.
| |||
|
|
| |||
|
|
|
