Documents
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Orange County Water District Removes PFAS With 30 Systems
In February 2020, the California State Water Resources Control Board announced revised drinking water Response Levels for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) in drinking water. The new Response Levels (RLs) were set at 10 parts per trillion (ppt) for PFOA and 40 ppt for PFOS. The previous RL was 70 ppt for a combined total concentration for the two contaminants.
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Orekan (Navarre Regional Government): early warning system to reduce flood risk
The Autonomous Region of Navarre, located in northern Spain, has a surface area of over 10,000 km² and a population of approximately 680,000, concentrated mainly in the Pamplona metropolitan area. It has a highly complex hydrological system, as it is divided between the Ebro River basin, which covers approximately 90% of the region, and the Cantabrian basin, characterized by short, fast-responding basins. -
Our 15 most frequently asked questions on improving aquaculture
To help companies protect against waterborne infection and disease, Evoqua recently hosted a webinar dedicated to understanding and improving water quality in land-based hatcheries that you can watch here.
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Ozone Solves Listeria Problem
A fish process facility in Norway detected Listeria monocytogenes in their facility and contacted Trond Storebø of Naustor Technology, Evoqua’s partner in Norway. Within three weeks, Naustor had acquired one of Evoqua’s new PC Series ozone disinfection systems. The use of ozone has made the products safer, enhanced the shelf-life for the fresh produce and protects the company’s brand.
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Sludge Handling in Perry, Oklahoma
The city needed to discharge sludge at two different rates–one rate for sludge returning to the headworks RAS and another rate for sending material to the sludge box. The system is designed to speed up dewatering biosolids as a replacement to the existing sand drying beds.
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Petcoke Storage Faces Challenge With Rainwater Discharge
A California petcoke facility used wastewater ion exchange to remove nickel and vanadium from stormwater runoff, meeting discharge limits and enabling compliant, scalable treatment.
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Thirsty work in Poland…
Quenching the thirst for quality pumps within Sokpol, a leading Polish drinks manufacturer
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Predicting failure: smart fault detection for underground cable networks
Sentec partnered with a leading solutions provider to develop a scalable monitoring system that predicts and accurately locates faults in underground cable networks, enabling faster and more cost-effective maintenance. -
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Process control features to optimize energy efficiency and process stability
Before online instrumentation, process adjustments to biological activated sludge processes were made based on delayed results from laboratory testing. The introduction of online instrumentation to the process tanks improved the response time and allowed operations staff to make process adjustments based on real-time data.
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Propel Swim Academy Combines RMF and UV for Superior Water Quality
Propel Swim Academy is a three pool, 12,000 ft² facility located in South Riding, Virginia. This family friendly swim school is the only stand-alone facility in the South Riding area to feature three indoor pools. During planning, Propel‘s owner, Linda Stewart, focused on three primary goals: water quality, sustainability and a compact footprint.
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Publiacqua SpA: Integrating the drinking water management system
Centralize water cycle management for Publiacqua SpA, the utility in charge of providing the drinking water service in Medio Valdarno, in Tuscany, which has four provinces: Florence, Prato, Pistoia and Arezzo.
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Public utility removes arsenic to control underground plume
A public water agency in California contacted Xylem to treat remove arsenic from a groundwater supply. They needed to achieve a 1 ppb effluent level from the treatment system, 90% lower than the current drinking water standard in California. In addition they needed to have the treatment operating within weeks.
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Pump station retrofit ends stormwater woes in Lyndhurst, NJ
Lyndhurst officials prefer Flygt's submersible-pump solution for its sewer department’s stormwater station.
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