Atlantic City (NJ) Sewerage Company (ACSC), a private utility with 7,500 connections in and around the “Boardwalk” casino district, keeps a keen eye trained on operating costs. Its focus until recently was on the excessive energy and maintenance expenses for three 300-hp long-shaft pumps at the Baltic Avenue Pump Station. The facility’s pumps were sized to handle the expected growth of the area’s casino industry.
Jackson Energy Authority serves nearly 40,000 residences, businesses and industrial customers in and around Jackson, Tenn.
Two aging 7.5-hp three-phase pumps in the utility’s Rolling Acres Lift Station were experiencing frequent outages that required increasing man-hours for maintenance and repair. The electric meter at the duplex station showed high power consumption resulting from recurring drag on the impellers. As these combined factors drained more and more of the utility’s budget, the increasing frequency of pump failures raised the risk of sanitary sewer overflows.
Located across the Columbia River from Portland, Ore., the City of Vancouver, Wash., has distinguished itself as a leader in effective sanitary sewer system management by maintaining adequate capacity, proactively maintaining sewage infrastructure and minimizing cost for existing and new ratepayers.
Jefferson Parish, La., extends along a 15-mile-wide corridor west of and upriver from New Orleans. As demonstrated by the recent Hurricane Isaac, this parish is vulnerable to tropical storms and hurricanes from June through November in a region that is already known for high rainfall events throughout the year. To make matters worse, the structural and operational integrity of the parish’s sanitary sewer lines and pump stations are compromised by age and very minimal budgets to maintain the equipment in place.
The sewer utility for the City of Andalusia, Ala., is among scores of municipal and regional operations across the nation that benefited from the American Recovery and Reinvestment Act of 2009. Andalusia qualified for a $250,000 U.S. Department of Energy Block Grant. However, the proposed use—for replacing aging pumps at two lift stations along the municipal sewage collection system—had to be fully demonstrated to be eligible.