NUTRIENT REMOVAL CASE STUDIES & WHITE PAPERS

Optimizing Chemical Dosing Reduces Chemical Use While Meeting Effluent TP Limits
Optimizing Chemical Dosing Reduces Chemical Use While Meeting Effluent TP Limits

The city of Black River Falls in Wisconsin used chemical treatment with ferric chloride (FeCl3) to achieve their effluent total phosphorus (TP) permit of 1.0 mg/l. Historically, the chemical dosing rate was manually adjusted on a daily basis based on the measured effluent TP concentration. The plant was upgraded with an OSCAR process performance optimizer control system with phosphorus controller, which uses continuous measurement of orthophosphate. Read the full case study to learn more.

  • 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.

  • A Wastewater Solution With Low Capital Costs
    A Wastewater Solution With Low Capital Costs

    Along the Indian River Lagoon adjacent to Vero Beach, Florida, both residents and government officials were becoming increasingly concerned about excessive nutrient loads and pollution.

  • 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. 

  • Aerobic Granular Sludge System Reduces Energy Up To 50% When Compared To Conventional Activated Sludge Systems
    Aerobic Granular Sludge System Reduces Energy Up To 50% When Compared To Conventional Activated Sludge Systems

    The AquaNereda® Aerobic Granular Sludge System (AGS) is an innovative biological wastewater treatment technology that provides advanced treatment using the unique features of aerobic granular biomass. This advanced nutrient removal process can reduce footprint up to 75% and energy up to 50% when compared to conventional activated sludge systems.

  • 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.

  • Improving Total Nitrogen Removal
    Improving Total Nitrogen Removal

    To protect the sensitive waters of the Neuse River Basin, the State of North Carolina formally adopted a nutrient management strategy in 1997 which established Total Maximum Daily Loads for all point source contributors of Total Nitrogen (TN) to the Neuse River. By upgrading its oxidation ditches, this Eastern NC plant saw a reduction of 76% TN compared to its average discharge from the past 6 years.

  • 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.

Refinery Expands Production While Meeting Discharge Standards Quality
Refinery Expands Production While Meeting Discharge Standards Quality

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.

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NUTRIENT REMOVAL PRODUCTS

OSCAR™ Process Performance Optimizer OSCAR™ Process Performance Optimizer

The benefits of an OSCAR system are clear. The OSCAR control system is a customizable, integrated system comprised of hardware, software, and services. Designed to be used with Sanitaire biological treatment solutions, OSCAR helps plants meet their performance requirements and operating budgets.

TITAN MBR QUBE™ TITAN MBR QUBE™

The TITAN MBR QUBE™ is a complete, factory-built, packaged wastewater treatment system featuring a compact design for simple shipping and mobility. Equipped with the same TITAN MBR™ technology that has made S&L an industry leader in pre-engineered treatment systems, the TITAN MBR QUBE™ provides simple, economical and efficient plug and play treatment in a much smaller footprint than conventional treatment systems. The TITAN MBR QUBE™ is a 40-ft long cube shipping container; delivered directly to the job site, minimal assembly required.

AquaNereda AquaNereda

The AquaNereda® Aerobic Granular Sludge System is an innovative biological wastewater treatment technology that provides advanced treatment using the unique features of aerobic granular biomass. The unique process features of the AquaNereda system translate into a flexible and compact process that offers energy efficiency and significantly lower chemical consumption.

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.

UNOX™ Process Upgrade UNOX™ Process Upgrade

Praxair has had an extensive history of innovation in the wastewater treatment process. About 15% of all wastewater treatment in the United States occurs in UNOX™ type systems. Since their original construction, many facilities now require adherence to new regulations. Praxair can help you make the required changes to ensure that your facility is running in the most efficient way possible and in line with current standards. We provide a wide range of technologies for UNOX™ facilities. These include enhancements that can help you achieve reduced operating costs and improved reliability through the upgrade of oxygen generation and dissolution equipment.

Get Rapid & Reliable Settling with the CoMag® System’s New Package Plants Get Rapid & Reliable Settling with the CoMag® System’s New Package Plants

The CoMag® System settles floc up to 30 times faster than conventional flocculation treatments, enabling plants to increase capacity and clarifier performance.  It helps meet tighter regulations within existing tankage and smaller treatment volumes than alternative technologies, allowing facilities to reduce plant investment costs for upgrades. 

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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

Containerized Boiler Feedwater Systems Video Containerized Boiler Feedwater Systems Video

Containerized boiler feedwater systems by SUEZ are custom designed to meet different requirements for each individual project.  These containerized systems eliminate concerns clients have such as limited space, harsh climate conditions or tight construction schedules. In this video, SUEZ experts discuss the advantages and benefits of containerized systems and how they bring efficiency to the boiler demineralization treatment 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.

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.

Monitoring Nutrient Loading Via Satellite Monitoring Nutrient Loading Via Satellite

Blue Water Satellite uses satellite technology to monitor nutrient loading on land and in water bodies. Blue Water Satellite can compare current and past data to give a far greater picture of land and water body health than previously thought possible.

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.

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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.