Water Environment & Technology (WE&T) is the premier magazine for the water quality field. WE&T provides information on what professionals demand: cutting-edge technologies, innovative solutions, operations and maintenance, regulatory and legislative impacts, and professional development.
Taking Control of CSOs
Long-term programs to manage combined sewer overflows (CSOs) often cost billions of dollars and entail multidecade implementation periods. The CSO control and minimization programs that have been initiated since the early 1990s now are being implemented. Lessons learned from the planning, design, and implementation approaches of major CSO cities can provide guidance that extends beyond traditional CSO solutions.
Maximize Pump Performance
Pumping systems account for nearly 20% of global power demand and 25% to 50% of the energy used in certain industrial and municipal operations. So, anything that produces even moderate gains in pumping efficiency can greatly reduce worldwide energy use, costs, and greenhouse gases.
US EPA Sets 15-Year Schedule for Chesapeake Bay Cleanup
The U.S. Environmental Protection Agency (EPA) is driving the bandwagon in the parade of federal agencies lined up to fulfill U.S. President Barack Obama’s mandate to clean up Chesapeake Bay — but eagerness to climb aboard varies among bay watershed stakeholders.
Coming in the next issue:
Good Service at a Reasonable Rate
Wastewater treatment requires a lot of specialized equipment, and getting the most out of the dollars spent is essential. Asset management is a framework for organizing information on the condition and expected life of equipment and structures to spend money as effectively as possible.
In the April issue you’ll find out how to incorporate the asset management principles of relative criticality, condition assessment, and life-cycle optimization into capital planning. And sometimes the right solution is to avoid owning assets at all: Renting equipment can bring benefits and save money in the long run.
How Low Can You Go?
Rigorous nutrient removal requirements are spreading nationwide. In some cases, existing technologies can be optimized. For example, continuous-backwash filters are being modified to remove phosphorus and other contaminants, as well as nitrate and suspended solids.
Yet, in some cases numeric requirements could force wastewater treatment plants to produce effluent with nutrient concentrations below the commonly accepted limits of technology. The key to breaking through these limits is considering forms of nutrients not removed by traditional processes.