Xylem Wastewater Case Studies

  1. Meeting State Nutrient Regulations With SBRs 1/15/2014

    After the Missouri Department of Natural Resources reclassified the effluent receiving stream in the city of Sullivan, officials learned that its wastewater treatment lagoon required a more advanced treatment process to comply. They selected a continuous-flow sequencing batch reactor (SBR) system that utilizes a modified activated sludge biological treatment. The new infrastructure has provided cost-saving results for the ongoing removal of nitrogen and phosphorous.

  2. Disc Aerators Replace Brush Aerators, Increasing Capacity And Performance 1/15/2014

    To comply with new EPA rules and handle additional flow, the City of St. Charles Missouri WWTP required a capacity increase, and the landlocked plant needed a solution that would fit within its existing footprint. Brush aerators and boat clarifiers were replaced with 12 VLR-mounted disc aerators to fulfill the oxygen requirement while allowing for the treatment of higher organic loading. The solution provided increased nutrient-removal capacity and improved efficiency without increasing tank volume.

  3. Lift Station Reduces Clogging, Lowers Operating Expenses With Self-Cleaning Pumps 1/8/2014

    Aging pumps at Jackson Energy Authority’s Rolling Acres Lift Station (Jackson, Tenn.) resulted in frequent clogging and outages that required costly maintenance and repair.

  4. Dry-Pit Submersible Pumps Replace Oversized Long-Shaft Pumps 1/8/2014

    After anticipated growth of the New Jersey casino industry fell short, Atlantic City Sewerage Company’s Baltic Avenue Pump Station was left with grossly-oversized long-shaft sewage pumps that operated inefficiently and were prone to cavitation.

  5. Upgrade To Diffused Aeration Results In Significant Energy Savings 12/12/2013

    After 35 years of use,  the fiberglass jet aeration manifolds in the Western Regional Water Reclamation Plant (Dayton, Ohio) had deteriorated, rendering four of eight wastewater aeration tanks inoperable. Managers recognized an opportunity to utilize a fine bubble diffused aeration system that eliminated the need for the pumps. The result: higher oxygen-transfer efficiency and reduced power costs to operate the system.

  6. Continuous Fill SBR Tanks Help WWTP Exceed Effluent Requirements, Generate Additional Revenue 12/10/2013

    In order to meet the anticipated effluent criteria required by the Pennsylvania DEP, the Newville Borough Water & Sewer Authority determined that its existing wastewater treatment facility needed renovations. By installing two continuous fill SBR tanks, the facility lowered total nitrogen below permit limits, reduced energy costs, and created a new revenue stream (selling unused nutrient allocations). Read the case study for full details.

  7. Sewer Authority Ends Plant Bypasses And Introduces Nutrient Removal With New Treatment Process 11/14/2013

    Find out how a treatment plant upgraded its secondary treatment aeration system to include nutrient removal through a nitrification/denitrification/phosphorus process and has successfully processed I&I induced surges that reached a 10-MGD peak.

  8. Advanced Wastewater Pumps Will Pay Dividends In Energy Savings For City Of Andalusia, Alabama 9/26/2011

    The sewer utility for the City of Andalusia, AL, was in line to receive stimulus funds for energy-related conservation projects, but 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. The prerequisite for eligibility required at least 30 days of documented monitoring to substantiate a guaranteed 25% reduction in electrical consumption.