Two Wastewater Treatment Plants In Grand Strand, S.C. Upgrade To Usfilter Triple Ditch Oxidation Systems
Flexibility, Ease Of Operation And Small Footprint Made The Triple Ditch Ideal For Both Plants
Source: USFilter
Grand Strand, S.C., July 14, 2003- In a $1.9 million purchase, the Grand Strand Water & Sewer Authority (GSWSA), recently upgraded and expanded two wastewater treatment plants (WWTP) in the Grand Strand area of South Carolina with USFilter triple ditch oxidation systems. Initiated to comply with reduced state discharge limit levels, the new systems will remove ammonia to 0.7 mg/L year-round.
The GSWSA selected the triple ditch system for its ability to comply with the new ammonia limit and cost-effectively address sensitive water concerns at both plants.
At the North Strand Regional Water Treatment Plant (Longs, SC) there was a seasonal flow change created problems in operations.
“The North Strand plant services a residential area as well as the beach community of North Myrtle Beach, S.C.,” says Larry Schwartz, environmental systems coordinator, GSWSA. ‘We needed a system that had the ability to adapt to changing flows and adjust energy requirements to achieve that.”
The area around the Conway Waste Water Treatment Plant (Conway, S.C.) requires the usage of pilings under all structures.
“The small footprint minimized the number of piles required, which greatly reduced the total construction cost. It also allowed us to retrofit the new plant on an existing site, located inside of an old lagoon, which was convenient,” says Schwartz.
The triple ditch system offers the simplicity of an oxidation ditch system, and the functionality of an SBR, without the associated intermittent surging discharge and fluctuating water level associated with SBR’s. The triple ditch’s large surface area and alternating series flow pattern, produce consistently high effluent quality with a continuous discharge and constant water level The triple ditch is one of the most energy efficient and economical biological treatment processes available today.
The Conway Wastewater Treatment Plant began operation at the end of May. The North Strand Water Treatment Plant is scheduled to begin start-up early September.
The contractor for Conway was Greenwall Construction and the consultant was Hazen&Sawyer.
The contractor for North Strand was Seaside and the consultant was Hobbs, Upchurch & Associates.
Grand Strand Water and Sewer Authority is a comprehensive and coordinated water and sewer utility system, it provides services from the beaches and into the rural portion of Horry County west of the Waccamaw River. The GSWSA provides contractual services to six municipal water and sewer utilities, two public water companies and into Georgetown County.
United States Filter Corporation, a Veolia Environnement company, is North America’s leading water company providing comprehensive water and wastewater systems and services to commercial, industrial, municipal and residential customers. Veolia Environnement (Paris Bourse: VIE and NYSE:VE) is the largest environmental services company in the world with more than 295,000 employees, including FCC, in about 100 countries and annual revenues of more than $31.5 billion. Visit the company’s web sites at www.usfilter.com or www.veoliaenvironnement.com.
Contact:
Karole Colangelo
Tel: (847) 706-6947
E-mail: colangek@usfilter.com