Concern about PFAS in biosolids led to a ban on land application in Maine enacted in 2022. That sent municipalities and clean-water...
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News Briefs: Texas Utility Sued by County for Alleged Harmful Leaks
A Harris County (Texas) attorney has filed a lawsuit against the utility in control of a wastewater treatment plant in Crosby, Texas. The...
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Bug of the Month: Bead-Shaped Filaments
For as long as I’ve been involved in filamentous bacteria type identification there have been multiple opinions of filaments that contain bead-shaped...
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MBBR Process Provides Clean Water for Power Generation
Problem: The island nation of Jamaica needed more power to satisfy peak demands and prepare for future base-capacity requirements. Generating the incremental...
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Water Leaders to Unite in DC for Water Week 2025
Water professionals nationwide will convene in Washington, D.C., for Water Week 2025, slated for April 6-12.
This in-person event features key sessions on...
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BDP Rotary Drum Thickener Helps WWTP Reduce Liquid Hauling Costs
The Milford Massachusetts Wastewater Treatment Plant was hauling liquid sludge that was getting more and more costly to deal with. After piloting...
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Clean Oil Producer Boosts Productivity With Low-Maintenance Centrifuges
Problem: Integrated Water Management needed to produce the cleanest water and oil possible from produced brine and oily wastes in oil production....
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Building a Culture of Water Conservation
Santa Fe had substantial success cutting per-capita water consumption. Now the New Mexico capital city is focusing on a long-term conservation strategy...
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All-Inclusive, High-Volume Chemical Feed
The FLEXFLO M5 is a fully enclosed, easily configurable high-volume dosing pump that does not require external control devices to operate.
M5 features...
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Treatment Plant Makes the Switch from UV to PAA to Disinfect Effluent
A wastewater treatment plant located on the Ohio River disinfects municipal and industrial wastewater before introducing it back into the river. The...
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Composting in Bennington, Vermont – Biosolids and Yard Trimmings
After it sat idle for nine years, the city of Bennington, Vermont, decided to recommission their agitated bay composting facility. Built in 1992...
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Affordable Housing Project Overcomes Stringent Water Requirements
Problem: A Boston-based developer aimed to provide 50 affordable and accessible residential apartments, but faced strict limits on effluent total nitrogen at...
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News Briefs: Texas Governor Declares Water Infrastructure an Emergency Item
Texas Gov. Abbott has declared water infrastructure a top priority for this legislative session, labeling it an emergency item. In his recent...
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CHEM-FEED MD3 Multi-Diaphragm Metering Pump: See What People Are Talking About
CHEM-FEED MD3 exclusive hyperdrive technology will help mitigate problems like vapor lock and loss of prime and ensure smooth, accurate, dependable chemical...
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Exam Study Guide: SVI Calculations and Flow Rate Calculations
Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we...
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Treatment Plant Operator Exam Study Guide Answers
What is the sludge volume index (SVI) of the following aeration basin, given the following data: a settleometer reading of 860 mL after...
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Blending Safety and Cost Savings into Chemical Feed Systems
The CSB Corporation Stop is a versatile and cost-effective product designed to inject chemicals pumped by metering pumps into tanks, water mains,...
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Enclosed Gravity Belt Thickener Increases Performance and Containment at WWTP
The Glens Falls WWTP was previously using a DAF thickener to thicken the WAS at the plant. The DAF thickener provided only...
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Developing Standard Operating Procedures for Chlorination in Water Treatment
Chlorination is one of the most widely used disinfection methods in water treatment. Proper chlorination ensures the safety and quality of water....






















