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.
Asset Management: Just Do It
As U.S. water and wastewater utilities face rapidly urbanizing development, increasingly stringent regulations, and increasing pressure to minimize rates, many are adopting asset management as part of a long-term business strategy.
Once Sacramento County Sanitation District 1 decided to move forward with asset management, it quickly made significant progress in training staff, making the organizational culture more customer-focused, and reducing costs.
The Nitty Gritty
Grit is defined as inorganic settleable solids ranging in size from 50 to 1000 µm. Grit deposits throughout a plant, gradually reducing processing and operational capacity in mechanically cleaned screens, aeration basins, pipes, channels, and digesters. Grit will abrade pumps and sludge-handling equipment.
Surprisingly, though, there are no published standard methods for sampling and analyzing grit from wastewater treatment plants. For this reason, consideration of the methods used in sampling and characterizing grit must be made to ensure that data generated represent actual conditions.
Could Copper-Containing Fabrics Soon Be Affecting Your Wastewater?
Soon, a whole line of fabric products impregnated with copper-based biocides could be available for use and sale to consumers nationwide in stores and over the Internet. Such widespread household use, some wastewater treatment plant representatives worry, could cause facilities to exceed their permit limits for copper if the metal leaches out during laundering.
Coming in the next issue:
Water Reuse. An evaluation of the technologies and their benefits.
No Rain, No Water, BIG Problem. Water reuse should ease water supply strain in Brisbane, Australia.
Keeping It Simple. In some instances plants can achieve high-tech effluent with a low-tech system.
The Nitty Gritty, Part II. Examine what happens when high flows flush the collection system and evaluate the effectiveness of removing grit from primary solids instead of at the headworks.
Separating Fact From Assumption. Learn about the tools available to gauge the public’s opinion of your next project.
Rebound Readings. A Southern California utility finds out if a new radar level instrument designed to detect sludge and foam levels lives up to its potential.