04.23.23 -- A Time-Based Alternative To Multistage Biological Nutrient Removal

A phase-activated sludge system (PASS) reduces energy consumption by combining the aerobic and anoxic tanks and alternating diffusers between the on and off position based on a preprogrammed schedule.

The oldest town in the Louisiana Purchase, Natchitoches currently has a population of approximately 20,000 people. An old town means old infrastructure, so a project to upgrade the city’s master lift station was recently set into motion.

A global ingredients group in Ireland installed a new 20ft containerized tertiary treatment system at its largest liquid dairy plant, as part of the site’s ongoing wastewater compliance and to improve capacity to their existing wastewater treatment system.

A JWC Monster Stack is a customized cutter stack that matches the right cutters to the expected challenges in the operational environment. As JWC uses individual cutters for its grinders, it is possible to mix different cutter types in the stack, and those changes can happen anywhere along the stack.

In this case study, discover how an Oregon water district moved to AMI for better accuracy and response time. 

Here are some insights that can help water treatment plant (WTP) operators deal with their internal concerns about DBPs and residual chlorine or ammonia levels, as well as their external concerns about customer perceptions of water quality.

Biological nutrient removal (BNR) is allowing many wastewater treatment plants to achieve extremely high effluent quality. Still, for some applications, even the most advanced BNR processes can’t address all concerns.

There is a lot of talk these days about a new recession, so it got me thinking, “Are utilities recession-proof?”

The Boy Scouts of America wanted an environmentally friendly method for disposing of the greywater generated by their shower buildings. Here’s how Orenco’s AdvanTex Treatment Systems helped.

On the afternoon of May 19, 2011, KLa Systems was contacted by one of their customers located in Virginia. The customer stated that their aeration basin was running at near 0 mg/L dissolved oxygen (DO) residual with their air supply blowers running at 100% of capacity. Based on the conversation it was determined that a KLa field service technician was needed on site immediately.

Mueller was hired by an energy performance firm to survey a federal government water distribution network in Ontario to determine if leakage was contributing to unnecessary energy consumption.

Accurate and reliable flow measurement is critical to many water treatment and distribution applications. However, this can be a dicey proposition because most metering solutions require a set amount of straight pipe runs, before and after the device, to ensure accuracy. To address these and other related issues, an innovative solution has emerged.

The Catskill Mountains make for beautiful scenery, but the rolling hills present the challenge of reliably pumping water to residential areas. Xylem’s Goulds Water Technology Aquavar Intelligent Pump Controller, and the help of distributor D&S Pump and Supply Co. and installer Foley’s Pump Service, ensure water reaches a Connecticut community.

Due to recent LCR exceedances, PWSA faced skyrocketing customer requests on top of the order to replace 7% of their roughly 18,000-33,000 lead service lines every year. In addition, their Lead and Copper Compliance (LCR) and Lead Service Line Replacement (LSLR) testing program required immense amounts of manpower. These two events combined to require thousands of point-of-use kits to be collected and tested every year. 

Andrea Tavera, a former University of Oklahoma graduate student, used Innovyze drainage design software to promote LID-based, green infrastructure design in hopes of resolving Oklahoma’s two greatest drainage challenges caused by stormwater runoff: excessive flooding and pollution. 

Here are several important considerations for getting maximum value from produced-water RO treatments at minimal total lifecycle costs.

Mitigating non-revenue water (NRW) challenges has taken an increasing role in water utilities over the past several years. There is a saying in the water industry that ‘what gets measured gets managed’. The value of real-time accurate data such as that delivered by Trimble’s digital water technology has been a useful tool for water utilities in that regard. 

Disposable throw-away products are making raw sewage pumping tougher than ever. The Jefferson Street Pump Station at Centralia, WA, had a problem demanding a cost-effective solution.

Discover why clamp-on flow measurement provides a much more reliable and accurate reading compared to other methods. 

Ira Township in Fairhaven, MI, used to have a variety of water meters with different reading technology — radio, touch-read, automatic reading boxes, and direct-read meters. On average, the meters were 19 years old and some were as old as 40 years. “With meters that old, we were not recouping all the revenue we should be,” says Chris Hiltunen, Ira Township Water & Department of Public Service superintendent.