NUTRIENT REMOVAL CASE STUDIES & WHITE PAPERS

The World’s Largest Drinking Water Plant Using Ozone Serves 1.6 Million Customers
The World’s Largest Drinking Water Plant Using Ozone Serves 1.6 Million Customers

Facing new limits on acceptable levels of DBPs in the drinking water, as well as age-old complaints about the taste of the water during the summer algal bloom, the North Texas Municipal Water District turned to ozone disinfection as a possible alternative able to address both concerns.

  • ACTIFLO And Hydrotech Discfilter: A Two Stage Process
    ACTIFLO And Hydrotech Discfilter: A Two Stage Process

    The state of Minnesota instituted a new water quality requirement that limits cities along the Minnesota River to a 1 mg/L Total Phosphorus limit by 2015 to prevent algae blooms and resulting pollution problems.

  • 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.

  • 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

SCOUT Hydro Profiling System SCOUT Hydro Profiling System

The Reliant Water Technologies SCOUT Hydro Profiling System is the answer to obtaining clear and concise shallow water survey data quickly and inexpensively. By not only providing a visual hydrographic ‘picture’ of everything underwater, in any shallow body of water, the SCOUT also provides the volume of sludge in the water body (as well as the volume of free water). The ‘picture’ provided is color enhanced in order to provide clear, definitive delineation of variable depths of sludge, or debris, and includes multi-point water depth over-lays.

CoStrip™: CoStrip™:

Veolia’s patent-pending CoStrip degases raw water by introducing microbubbles of a stripping gas (air, nitrogen or fuel gas) counter-current to the liquid stream. First, the microbubbles are introduced into a series of chambers utilizing eductors. Next, they rise and capture dissolved gases due to the disequilibrium between the microbubble gases and the dissolved gases in the water.

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.

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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

Combining Energy Efficiency and Nutrient Removal Combining Energy Efficiency and Nutrient Removal

The Sanitaire Bioloop oxidation ditch process effectively removes total nitrogen and total phosphorus. Our experienced design team can put together an optimized, flexible solution suited to your current and future treatment needs—without the “black box” approach. Best of all, the process comes standard with all the long-term support you’ve come to expect from Sanitaire and can be provided with a process performance guarantee.

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.

Chemical-Free Pretreatment Technology Chemical-Free Pretreatment Technology

This video demonstrates the advantages of using OpenCEL technology for the pretreatment of secondary waste-activated sludge generated during advanced biological wastewater treatment. OpenCEL employs high frequency electrical pulses to break open biomass cell membranes, releasing soluble material that is more readily digested. Learn how the chemical-free technology can cut costs and recover energy.

WEDECO PRO<sub>3</sub>MIX Overview WEDECO PRO3MIX Overview

The PRO3MIX bromate control system is an intelligent ozone-based advanced oxidation process (AOP) introduction and reaction system enabling ozone treatment in a compact and intelligent design to mitigate bromate formation even in cases of high level bromide in source water. This short animated overview walks the reader through the various disinfection points of the process.

Oxelia: An Ozone-Enhanced Biologically Active Filtration System Oxelia: An Ozone-Enhanced Biologically Active Filtration System

Xylem’s Leopold Oxelia is designed for municipal wastewater treatment. The ozone-enhanced biologically active filtration system and multi-barrier solution combines ozone, filtration and analytical instrumentation to deliver optimal wastewater treatment for water reuse and discharge into sensitive waters.

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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.