NUTRIENT REMOVAL CASE STUDIES & WHITE PAPERS

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.

  • 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.

  • Envirex® Energy Efficient Activated Sludge Process Meets Stringent Regulations While Minimizing Costs
    Envirex® Energy Efficient Activated Sludge Process Meets Stringent Regulations While Minimizing Costs

    The Town of Elkton, Maryland, located in Cecil County near the head of the Chesapeake Bay, has a population of approximately 15,000 and an average elevation of 9.1 m (30 ft). Elkton is an economically strong, stable community that is very conscientious about environmental issues. In an effort to protect the Chesapeake Bay aquatic life, new stringent wastewater effluent regulations were implemented requiring very low nutrient levels in wastewater treatment plant discharge.

  • The Benefits Of Reusing Wastewater
    The Benefits Of Reusing Wastewater

    Since water is an essential element in food or beverage operations, reusing it can reduce a business’s water usage ratios, help meet sustainability goals, lower supply risk and contribute to cost savings, making it a top priority for many companies today.

  • Headworks Bio Commissions First IFAS System In Costa Rica
    Headworks Bio Commissions First IFAS System In Costa Rica

    In late 2013, Headworks Bio Inc. was awarded a contract with General Contractor Soluciones Tecnicas Ambientales, S.A. (SOLAMSA) to supply an IFAS system to upgrade the existing Ptar El Roble conventional activated sludge (CAS) treatment facility in Puntarenas, Costa Rica — the first IFAS installation in the country.

Sturbridge POTW: Greater Capacity For High Flow Events, Enhanced Clarification For New Regulations
Sturbridge POTW: Greater Capacity For High Flow Events, Enhanced Clarification For New Regulations

Sturbridge, Massachusetts historically suffered from periodic blooms of filamentous bacteria that caused bulking in the secondary clarifiers of their three activated sludge package plants.

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NUTRIENT REMOVAL PRODUCTS

Top-Entry Agitators Top-Entry Agitators

All mixing applications require varying degrees of both small-scale turbulence and bulk flow. With a good bulk flow, the contents of the entire tank are put into motion so that all parts are involved in the mixing. The strength of the bulk flow is, in turn, dependent on the total amount of installed thrust and layout.

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

Primary Filtration Using Cloth Media Filtration Technology Primary Filtration Using Cloth Media Filtration Technology

Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design, application and manufacture of wastewater treatment equipment and systems for municipal and industrial markets, worldwide. They are most noted for the Aqua SBR, the sequencing batch reactor, biological process, as well as now our cloth media filters.

Phosphorus Recovery And Revolutionary Algae Phosphorus Recovery And Revolutionary Algae

Phosphorus recovery from wastewater and a newly-developed algae product that doesn’t require photosynthesis are the latest examples of intense product development within Ovivo. In this Water Online radio interview, Jim Porteous, Ovivo’s Vice President and General Manager, explains some of the changes he is seeing in the industry that are fueling the Company’s focus for the future.

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NUTRIENT REMOVAL VIDEOS

Ferazur/Mangazur® Animation Video Ferazur/Mangazur® Animation Video

Ferazur/Mangazur are biological filtration processes for the removal of iron, manganese and arsenic from groundwater sources. The precipate is removed by using Biolite "S", our specially developed media that requires no replacement. Watch the video to learn more.

Meteor IFAS Process Meteor IFAS Process

The Meteor® IFAS/MBBR technology offers flexible solutions to a multitude of biological process upgrade applications such as nitrogen removal, treatment capacity increase and wastewater reuse.

BioAlgaNyx: Bringing Sludge Management Into The 21st Century BioAlgaNyx: Bringing Sludge Management Into The 21st Century

Ovivo, a worldwide leader in providing advanced water and wastewater treatment solutions, in partnership with the University of Akron, has developed BioAlgaNyx™, a bioengineered algae based technology for wastewater and sludge management.

Principle Of Colorimetric Measurement Principle Of Colorimetric Measurement

Nutrients, metals or carbon components in a liquid can be measured using the colorimetric measuring principle with or without digestion. This video shows what it is about and how this measuring principle work.

Superior Effluent Quality With Batch Reactor Technology Superior Effluent Quality With Batch Reactor Technology

Changing effluent demands are a common challenge for wastewater treatment plant operators. The AquaSBR sequencing batch reactor provides an adaptive solution, delivering enhanced biological nutrient removal (EBNR) with flexible design and process control. Watch this video to see a 3D animation of the system’s five-phase operation.

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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.