Nutrient Removal Resources
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Aerobic Digester Reduces Nutrient Return And Improves Energy Efficiency
1/8/2019
Many operators and engineers are turning to performance optimizers and controls automation to enhance treatment processes and reduce operating costs.
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Understanding And Coping With Struvite/Vivianite Formation In WWTPs
12/21/2018
Based on wastewater properties, various types of mineral buildup can affect wastewater treatment plant (WWTP) piping. With their impacts on plant energy efficiency and potential restriction of throughput capacity, keeping pipes free-flowing is an important aspect of WWTP operations. Here’s guidance for coping with two common problems associated with phosphorus concentrations in wastewater — struvite and vivianite.
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EPA Uses Floating Vegetated Islands To Remove Excess Nutrients From Water
12/4/2018
Harmful algal blooms — the overgrowth of algae in water — are a major problem across the nation. Blooms occur when excess nutrients (nitrogen and phosphorus), combine with sunlight, and warm temperatures in water bodies. They can cause severe, negative impacts on aquatic ecosystems, the economy, and human health.
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World's Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution
10/2/2018
Nutrient pollution is getting worse in many estuaries throughout the United States, especially those on the heavily populated East Coast.
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Denitrification Filters Meet Strict, Varying Nitrogen Limits
10/1/2018
The cities of Littleton and Englewood, CO, just south of Denver, share a wastewater plant — the Littleton/Englewood advanced wastewater treatment (AWT) plant located in Englewood. The 7886 m3/hr (50-mgd) Littleton/Englewood AWT plant serves more than 300,000 residents in the Denver metropolitan area. The facility also receives sewage from 21 districts within a 75 square mile service area. Plant effluent is discharged to the Denver metro area’s major watershed, the South Platte River.
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Award-Winning Design Helps WWTP Protect Chesapeake Bay Watershed
9/26/2018
Arlington County’s Water Pollution Control Plant (WPCP) in South Arlington, VA, is located on 35 acres of land squeezed into a commercial/residential neighborhood less than a mile west of Ronald Reagan Washington National Airport. The facility treats flows from nearly all of Arlington. In addition, nearly 20 percent of the plant’s flow comes from neighboring localities such as Alexandria, Fairfax County, and Falls Church. Effluent from the plant is discharged into Four Mile Run to the south, which feeds into the Potomac River and, ultimately, the Chesapeake Bay.
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Methanol Dosing Technology Helps Denitrification System Pass Rigorous Performance Test
9/25/2018
In 2007, Greenville, SC-based Western Carolina Regional Sewer Authority (WCRSA) conducted a rigorous performance test on a new tertiary treatment technology to assess its ability to effectively remove nitrate-nitrogen (NO3-N) without using excess amounts of methanol at its Lower Reedy Wastewater Treatment Plant (WWTP).
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Denitrification Technology Helps Wastewater Treatment Plant Meet China's Stringent Class 1A Standards
9/25/2018
China has implemented more stringent environmental standards in recent years. Local environmental protection departments now require urban wastewater treatment plants to apply strict enforcement measures to meet effluent discharge standards.
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Harmful Algae: How To Stay Ahead Of The Bloom
9/6/2018
It’s the call no water treatment plant superintendent wants to receive, especially not while on vacation. Andy McClure, Superintendent of Toledo, Ohio’s Collins Park Water Treatment Plant, answered his phone to hear his head of operations report that the level of microcystin in the finished water was high, caused by a large harmful algal bloom (HAB) that was impacting the plant’s Lake Erie intake.
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Polyblend® Mechanical Polymer Activation System Outperforms Hydraulic Polymer Mixing Unit
7/1/2018
Henry N. Wochholz Regional Water Recycling Facility (WRWRF) consists of primary, advanced biological secondary and tertiary treatment with advanced total nitrogen removal. Always interested in enhanced treatment performance, the staff members recently examined the polymer use of the existing dewatering belt filter presses.