NUTRIENT REMOVAL CASE STUDIES & WHITE PAPERS

Polyblend® Mechanical Polymer Activation System Outperforms Hydraulic Polymer Mixing Unit
Polyblend® Mechanical Polymer Activation System Outperforms Hydraulic Polymer Mixing Unit

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. 

  • AnoxKaldnes Expertise- Rocky Mountain Region
    AnoxKaldnes Expertise- Rocky Mountain Region

    The AnoxKaldnes™ MBBR (Moving Bed Biofilm Reactor) process is a biological wastewater treatment process that utilizes specialized plastic carriers to create a surface on which a biofilm can attach.

  • Effective Water Recovery Simplified Through Committed Partnership
    Effective Water Recovery Simplified Through Committed Partnership

    Clearas Water Recovery's patented treatment platform, Advanced Biological Nutrient Recovery (ABNR) technology, is highly modular and scalable, providing a sustainable approach to cleaning water. The Clearas system consists of three core phases: the blend phase, the nutrients recovery phase and the separation phase. For optimal results, Clearas has partnered with Endress+Hauser for dependable products and reliable technical expertise.

  • Exceeding Phosphorus Limits Required For Environmental Wastewater Reuse
    Exceeding Phosphorus Limits Required For Environmental Wastewater Reuse

    In 2002, Georgia’s City of Flowery Branch faced strict new requirements about discharging water back into nearby Lake Lanier, a community drinking water source, compelling the city to find an alternative wastewater system. After a thorough evaluation of various wastewater treatment solutions, Pall Corporation’s Aria FLEX membrane system was selected due to its critical ability to meet the phosphorus limits.

  • Daelim RMP-2 Petron Bataan Refinery
    Daelim RMP-2 Petron Bataan Refinery

    Petron Bataan Refinery wanted to expand production to process 180 thousand barrels of crude oil per day while changing its feedstock from Arab Light to less costly heavy and sour crudes.

  • Granular Activated Carbon: A Long-Term Solution For Meeting DPB Compliance
    Granular Activated Carbon: A Long-Term Solution For Meeting DPB Compliance

    When the Cobb County-Marietta Water Authority (CCMWA) anticipated the need to upgrade the Hugh A. Wyckoff water treatment plant, they turned to granular activated carbon (GAC) technology after vetting several alternatives. The plant, a wholesaler in a two-plant system, processes up to 72 million gallons per day and serves about 350,000 people. Comprising of Wyckoff and the James E. Quarles treatment plant, CCMWA is the second largest water provider in Georgia.

  • Regional Utilities Of Walton County, Florida Is Prepared For The Future With Evoqua’s SBR System With Jet Tech Technology
    Regional Utilities Of Walton County, Florida Is Prepared For The Future With Evoqua’s SBR System With Jet Tech Technology

    A forward-thinking not for profit private utility was in need to keep pace with population growth and seasonal flows in a space-constrained, environmentally sensitive resort environment. 

  • AquaSBR System Installed To Increase Capacity In A Small Footprint
    AquaSBR System Installed To Increase Capacity In A Small Footprint

    The West Central Conservancy District (WCCD), located in Hendricks County, IN, was formed to resolve sewer issues that the service area was experiencing with the local utilities company in the mid- ’80s.

  • WWTF Receives EPA Award For Achieving Low Level Nutrient Limits
    WWTF Receives EPA Award For Achieving Low Level Nutrient Limits

    Lee Wastewater Treatment Facility (WWTF), located in Massachusetts, received an award for its excellent treatment performance in 2012 from the Environmental Protection Agency (EPA), 4 years after start-up.

  • Meet Stringent Phosphorus Limits Under A Wide Range Of Conditions With The CoMag System
    Meet Stringent Phosphorus Limits Under A Wide Range Of Conditions With The CoMag System

    The Village of Waterbury Wastewater Treatment Plant (WWTP) is located on the Winooski River floodplain, which poses challenges from significant flooding during the spring runoff and storm seasons to strong algal blooms in late spring.

  • AnoxKaldnes MBBR Proves Effective At Asphalt Refinery
    AnoxKaldnes MBBR Proves Effective At Asphalt Refinery

    A refinery needed to upgrade the wastewater treatment system to prepare for expected changes brought about by the use of a new crude feedstock with elevated concentrations of TDS and conductivity. Veolia Water Technologies supplied an AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) treatment system to reduce the BOD and ammonia in the effluent.

Utility Transformation — From WWTP To Reuse Facility
Utility Transformation — From WWTP To Reuse Facility

Facing state Department of Environmental Quality mandates, an Arizona wastewater treatment plant (WWTP) took on a large-scale expansion project and effluent-quality upgrade to become a state-of-the-art water reclamation facility.

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NUTRIENT REMOVAL PRODUCTS

ATP And DNA Services ATP And DNA Services

Combining LuminUltra’s 2nd Generation ATP monitoring solutions with Microbe Detectives’ advanced DNA analysis and classification service allows you to identify and analyze the entire microbiome. This provides critical answers as to why control was lost AND how to fix and prevent future problems. For drinking water and wastewater utility managers, that means mitigating risk while improving capital and operating efficiencies.

TETRA™ LP Block™ Dual Parallel Lateral Underdrain TETRA™ LP Block™ Dual Parallel Lateral Underdrain

In municipal drinking water applications or pre-treatment for desalination plants using gravity filters, the filter underdrain is one of the most important components contributing to overall system performance and operation — whether a new filter design or retrofitting an existing filter.

TETRA™ Modular Deepbed™ Filter Modular Packaged Filtration Plant TETRA™ Modular Deepbed™ Filter Modular Packaged Filtration Plant

The TETRA™ Modular DeepBed Filter Plant from De Nora Water Technologies is designed as a competitive filtration plant for tertiary effluent from small to medium size sewage works. The Modular DeepBed Filter utilizes the technology of DeepBed filtration that has made the TETRA filter such a successful tertiary treatment process over many years in Europe and the United States.

TETRA™ DeepBed™ Tertiary Filtration System TETRA™ DeepBed™ Tertiary Filtration System

The TETRA™ DeepBed™ tertiary filtration system is an economical solution for the removal of total suspended solids and total phosphorus.

TETRA™ Denite® Deepbed™ Denitrification TETRA™ Denite® Deepbed™ Denitrification

The TETRA™ Denite® system integrates well with other plant treatment processes to provide superior total nitrogen (TN) and phosphorous removal.

True Simultaneous Nitrification-Denitrification Biological Treatment True Simultaneous Nitrification-Denitrification Biological Treatment

The TrueSND™ biological treatment process from Evoqua is a well-established true simultaneous nitrification denitrification technology. The process achieves nutrient and BOD treatment limits using less power in a smaller footprint when compared to more conventional alternatives. It can be applied in both new plants and retrofits, and it can easily resolve high peak and storm flow challenges. Evoqua has over 800 installations and offers three systems that fit specific plant needs and capacities: Orbal® multichannel oxidation ditch systemsVLR® systems and VertiCel® wastewater treatment systems. Evoqua also offers SmartBNR™ process controls, which optimize energy efficiency and plant operation. TrueSND can be applied for nutrient removal (TN and TP limits); BOD removal only (30/30 effluent); new construction; plant retrofits and upgrades; and high peak and storm flows. Evoqua can help create a solution that saves energy and space while meeting required effluent standards.

Magnetite Ballasted Treatment — Simple, Reliable And Proven Magnetite Ballasted Treatment — Simple, Reliable And Proven

The BioMag® and CoMag® Systems from Evoqua infuse magnetite into conventional biological and chemical floc making it heavier and dramatically improving settling. 

DAVCO™ Retrofit and Rehab Services for Biological Wastewater Treatment Plants DAVCO™ Retrofit and Rehab Services for Biological Wastewater Treatment Plants

The Davco™ product line of Evoqua located in Thomasville, GA, offers retrofit, rehab, and replacement parts and services and the installation of water and wastewater filtration, separation, clarification, aeration, biological treatment, and screw pumps. Our retrofit and rehab services save municipal and industrial water and wastewater plants time and budget in addressing worn out, over-extended-in-capacity treatment facilities that are costly to maintain.

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NUTRIENT REMOVAL PODCASTS

Intensification Concept At Wastewater Plants Explained Intensification Concept At Wastewater Plants Explained

Carollo Engineers, an environmental engineering firm that specializes solely on the planning, design, and construction of water and wastewater facilities has identified five major trends in the industry.

Enhanced Primary Treatment Reduces Energy By Separating BOD Before Aeration Enhanced Primary Treatment Reduces Energy By Separating BOD Before Aeration

At WEFTEC 2016, Evoqua Water Technologies explored six core challenges faced by wastewater treatment plants -- energy reduction, nutrient removal, odor and corrosion control, aging plant equipment, water reuse and disinfection. In this Water Online Radio interview, Paul Rice, Municipal Marketing Director with Evoqua Water Technologies, discusses energy reduction and nutrient removal in more detail.

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NUTRIENT REMOVAL VIDEOS

Video: Integrated Fixed-Film Activated Sludge (IFAS) From Headworks BIO Video: Integrated Fixed-Film Activated Sludge (IFAS) From Headworks BIO

The Integrated Fixed-Film Activated Sludge (IFAS) process is typically installed as a retrofit solution for conventional activated sludge systems that are at or beyond capacity.

On-Line Probes For Analyzing Nutrient Removal From Wastewater On-Line Probes For Analyzing Nutrient Removal From Wastewater

WEFTEC 2009 - Bob Dabkowski of Hach discusses a variety of the Company's instruments and on-line probes for analyzing nutrient removal from wastewater.

Stickney Phosphorus Reactor Lift

Construction of the world’s largest phosphorus recovery facility continues at our Stickney Water Reclamation Plant. On July 22, one of three reactors was lifted, rotated and placed into the building. This time-lapse video shows a portion of the process which required approximately 50 minutes to complete.

Science Safeguards Drinking Water From Harmful Algal Blooms

Toxins from harmful algal blooms are increasingly contaminating source waters, as well as the drinking water treatment facilities that source waters supply. EPA researchers are helping the treatment facilities find safe, cost effective ways to remove the toxins and keep your drinking water safe.

Subcommittee Hearing: Cyanotoxins In Drinking Water

On Wednesday, November 19, 2014, at 10:15 a.m. in 2322 Rayburn House Office Building, the Subcommittee on Environment and the Economy will hold a hearing entitled “Cyanotoxins in Drinking Water."

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NUTRIENT REMOVAL NEWS

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ABOUT NUTRIENT REMOVAL

 

About Nutrient Removal

Nutrient removal from wastewater consists of treating wastewater to remove nitrogen and phosphorus before it reenters natural waterways. High levels of nitrogen and phosphorus in wastewater cause eutrophication, a process where excess nutrients stimulate excessive plant growth such as algal blooms and cyanobacteria. The decomposition of the algae by bacteria uses up the oxygen in the water causing other organisms to die. This creates more organic matter for the bacteria to decompose. In addition, some algal blooms can produce toxins that contaminate drinking water supplies.

As authorized by the Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program regulates point sources, such as municipal wastewater treatment plants, that discharge pollutants as effluent into the waters of the United States. In recent years, many of the States’ environmental bodies have lowered nutrient limits to arrest eutrophication. Maryland’s effort to protect the Chesapeake Bay and its tidal tributaries is perhaps the most notable example of nutrient removal in the US. Nutrient removal continues to be a growing area of focus for wastewater treatment throughout the world.   

The removal of nitrogen and phosphorus require different nutrient removal processes. To remove nitrogen, the nitrogen is oxidized from ammonia to become nitrate through a process called nitrification. This process is then followed by denitrification where the nitrate is reduced to nitrogen gas which is released to the atmosphere and removed from the wastewater.

Nitrification is a two-step aerobic process which typically takes place in aeration tanks. Denitrification requires anoxic conditions to encourage the appropriate biological conditions to form. The activated sludge process is often used to reduce nitrate to nitrogen gas in anoxic or denitrification tanks.

Phosphorus can be removed biologically using polyphosphate accumulating organisms (PAOs) which accumulate large quantities of phosphorus within their cells and separate it from treated water. Phosphorus removal can also be achieved by chemical removal. Once removed as sludge, phosphorus may be stored in a land fill. However, many municipalities and treatment facilities are looking to resell the biosolids for use in fertilizer.