parametrix inspired people blog

LOTT Leads the Way with Biological Nutrient Removal


Photo by EG Aerial Photography

LOTT Clean Water Alliance provides wastewater treatment and water reclamation services for nearly 120,000 residents in Lacey, Olympia, Tumwater, and Thurston County, WA. The non-profit, formed by four government partners, is recognized locally, regionally, and nationally as an industry leader in progressive treatment approaches that meet some of the most stringent discharge limits in the United States. LOTT operates the Budd Inlet Treatment Plant, which was built in the early 1950s in downtown Olympia, Washington.

The Washington State Department of Ecology has initiated a general permit process that will eventually require all 84 wastewater treatment plants discharging into the Puget Sound to implement biological nutrient removal (BNR). BNR is an important treatment process to reduce nitrogen in wastewater effluent. This process reduces nutrient loading in receiving water bodies,... (more)


Risk & Resilience and Emergency Response Requirements for Water Utilities: What does this mean for you?


The United States Environmental Protection Agency has announced that community water systems that serve more than 3,300 people are required to complete a risk and resilience assessment and develop an emergency response plan by June 30, 2021. (This is according to Section 2013 of America’s Water Infrastructure Act of 2018.) Are you prepared?

What is a Risk and Resilience Assessment?

According to the EPA, risk and resilience assessments “evaluate the vulnerabilities, threats and consequences from potential hazards.” These must be reviewed every five years and resubmitted to the EPA. They include elements such as natural hazards and malevolent acts; resilience of water source treatment, and distribution system infrastructure; monitoring practices; security and resilience of financial, electron... (more)


How Optimized Aeration Systems Can Save Millions at Treatment Plants


Part 1: AFT Arrow

By Matt Steiner & Jen Murphy

Many utility ratepayers are currently struggling with economic security. At the same time, energy costs are rising and the impact of uncertain material and equipment markets is driving project costs up and making capital planning less predictable. As such, it is important that as engineers that we leverage all available tools to optimize each project’s capital and operational costs. Almost just as important is sharing what we learn with not only our colleagues, but the wider engineering community.

The Aeration systems at Resource Recovery Facilities (Wastewater Treatment Plants) account for 30 to 80 percent of a plant’s energy usage, making them typically the single largest source of energy use within the facility. They’re also the most complex and capital intensive systems within a plant. This integral system, which ... (more)