DEWATERING & WATER TREATMENT SOLUTION FOR INSTALLATION OF A COMMERCIAL SWIMMING POOL

Project Location: Washington, D.C.

Owner: District of Columbia, Department of General Services

GC: Consys, Inc.

Project Revenue: $565,000.00

Project Timeline: 2018-2019

The Challenge:

A commercial swimming pool complex was being installed in the Washington D.C. area. Dewatering was required for construction of the pool as well as the bath houses. The groundwater needed to be treated for suspended solids (TSS) and metals. A multi-stage water treatment system was needed to treat the water prior to its discharge to the sewer.

The Solution:

Griffin engineered a water treatment solution to incorporate oxidation, filtration, and different types of media. The removal of the metals required chemicals for oxidation as well as acid and caustic feeds for pH adjustment, and multiple sand filters and bag filters. The project ran over the winter months. Griffin was able to provide complete winterization of the system to allow the project to stay on schedule with no down time due to the freezing temperatures.

WATER TREATMENT SYSTEM WINTERIZED TO WITHSTAND FREEZING TEMPS

The dewatering flow was much lower than the design conditions. Griffin was able to successfully modify the treatment system to provide adequate treatment at the lower flow while still meeting the treatment objectives set forth in the discharge permit. Our competent field service technicians were able to adjust the chemical feeds to continue optimal treatment, even with the lower flows.

Griffin installed and hydro-tested the treatment system, and provided 24/7 operators for the first month, to ensure seamless operation and to prevent any out of compliance discharges. Regular monitoring and preventive maintenance were conducted during the entire project to ensure optimal system performance.

The Griffin Difference:

The Griffin team was able to seamlessly overcome the low flow and freezing temperatures faced during the operation of the system. Our treatment methodology also provided the customer with a significant cost savings versus the systems proposed by our competition.