wol-nutrient-removal-995x60.png wol-nutrient-removal-995x60.png

NUTRIENT REMOVAL ARTICLES BY KEVIN WESTERLING

Revolutionary Sludge Management Comes To America

Revolutionary Sludge Management Comes To America

Wastewater utilities have a new opportunity to turn their sludge (biosolids) into something special.  Continue Reading...
'Peecycle' Please: Will Urine Separation For Nutrient Recovery Take Off?

'Peecycle' Please: Will Urine Separation For Nutrient Recovery Take Off?

Is it feasible to separate nutrient-rich urine before it reaches the wastewater treatment plant?  Continue Reading...
3 Alternative Nutrient-Removal Techniques

3 Alternative Nutrient-Removal Techniques

With a little help from water-quality managers, Mother Nature can do the job of remediating impaired or at-risk watersheds, while making them more resilient to nutrient loading.  Continue Reading...
Shortcut Nitrogen Removal: The Next Big Thing In Wastewater

Shortcut Nitrogen Removal: The Next Big Thing In Wastewater

A vast improvement on conventional biological nutrient removal could save the wastewater treatment industry untold millions.  Continue Reading...
From the Editor

NUTRIENT REMOVAL CASE STUDIES

  • Howard County, Maryland Sets The Pace In Restoring Chesapeake Bay Ecosystem
    Howard County, Maryland Sets The Pace In Restoring Chesapeake Bay Ecosystem

    Howard County, Maryland, Bureau of Utilities recently completed the $92-million Addition No. 7 project at the Little Patuxent Water Reclamation Plant (LPWRP) to improve the quality of the plant’s effluent discharge and to reduce harmful nutrients reaching Chesapeake Bay. The project’s various increments took over five years to complete and incorporated innovative design solutions and state-of-the-art technologies for denitrification, aeration and disinfection. The project presents a model for Maryland’s 66 largest wastewater treatment plants and possibly procurement of municipal facilities elsewhere facing increasingly stringent regulatory changes.

  • Solving A Taste and Odor Problem Step By Step (Article)
    Solving A Taste and Odor Problem Step By Step (Article)

    The City of Alliance Ohio’s water system has experienced annual Taste and Odor (T&O) events since the mid 1950’s, when the first of two reservoirs, Deer Creek Reservoir, was placed into service. Nutrient contaminants, in particular phosphorous, in the watershed accumulate in the reservoirs causing algal blooms. By Terry Keep of TrojanUV, Said Abou Abdallah of Arcadis, and Dr. Dean Reynolds, Department of Water Treatment City of Alliance, Ohio

  • How Can Seasonal Establishments Treat Their Wastewater Economically?
    How Can Seasonal Establishments Treat Their Wastewater Economically?

    Opened a few months per year, seasonal establishments typically experience important fluctuations in the number of visitors. Energy consumption and operating expenses must continually be analysed and optimized. The implementation of efficient energy management practices and the integration of innovative wastewater treatment solutions that can improve their cost-efficiency ratio have become major sources of savings for this whole industry.

More Case Studies

NUTRIENT REMOVAL PRODUCTS

ANITA™ Mox Solution For High Strength Ammonia Streams

ANITA™ Mox Solution For High Strength Ammonia Streams

Kruger’s ANITA™ Mox process combines nitritation and anammox reactions in an MBBR biofilm process using a single reactor. The reactions are maintained by control of DO in the reactor.

Memthane® Anaerobic Membrane Bio-Reactor

Memthane® Anaerobic Membrane Bio-Reactor

Anaerobic Membrane Bio-Reactor technology opens the door to the treatment of high-strength waste streams previously considered economically untreatable through traditional anaerobic processes alone. Memthane® technology maximizes renewable energy production while producing superb quality effluent that can be reused or discharged directly to the sewer.

Biological Nutrient Removal

Biological Nutrient Removal

Biological Nutrient Removal (BNR) is a process used for nitrogen and phosphorus removal from wastewater before it is discharged into surface or ground water.

BioSphere™ MBBR / IFAS Biological Treatment System

BioSphere™ MBBR / IFAS Biological Treatment System

Innovative, reliable and cost effective, the BioSphere™ MBBR /IFAS System from Evoqua is a fixed-film process using thousands of a patented designed biomass carriers to create a large protected surface area for biofilm growth.

More Products & Services

NUTRIENT REMOVAL ARTICLES

More Articles

NUTRIENT REMOVAL SUPPLIERS

  • Aqua-Aerobic Systems, Inc.
    Aqua-Aerobic Systems, Inc.

    Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design and manufacture of wastewater treatment equipment and systems for both municipal and industrial markets, worldwide.

  • Headworks International Inc.
    Headworks International Inc.

    Headworks Inc. is a total solutions provider offering wastewater screening, MBBR/IFAS biological treatment, and tertiary filtration products to the worldwide municipal and industrial treatment industry.

  • Degremont Technologies
    Degremont Technologies Water Treatment Equipment |Wastewater Treatment Equipment |Sludge Management Equipment
  • Ovivo
    Ovivo

    Ovivo brings together more than 200 years of collected experience, process expertise and proven technologies; but that doesn’t mean that we’re complacent. Over past centuries of growth, development and refinement we have been guided by the principle of delivering value to our clients. Our equipment and technologies already have a reputation for long-term durability and reliability, offering decades of use and leading to lasting relationships with key customers.

  • Severn Trent Services
    Severn Trent Services

    Severn Trent Services is a leading supplier of water and wastewater treatment solutions. We provide our clients with some of the industry’s brightest minds, advanced technologies, and quality products to provide you with truly efficient, cost-effective solutions to your water and wastewater challenges

  • Evoqua Water Technologies
    Evoqua Water Technologies

    Evoqua Water Technologies, formerly Siemens Water Technologies, is a leader in water and wastewater treatment products, systems and services for industrial and municipal customers. We offer a wide range of proven product brands and advanced water and wastewater treatment technologies, mobile and emergency water supply solutions and service contract options.

  • Smith & Loveless, Inc.
    Smith & Loveless, Inc.

    For more than 60 years, Smith & Loveless' pre-engineered water and wastewater treatment and pumping systems have paved the way for municipalities, developments, industry, governmental, and military facilities.

  • Veolia Water Technologies
    Veolia Water Technologies

    Veolia Water Technologies offers comprehensive water and wastewater solutions for industrial and municipal customers. With unique technologies and process expertise, Veolia specializes in engineering, design, and project management, construction and execution.

  • WRT - Water Remediation Technology, LLC
    WRT - Water Remediation Technology, LLC

    WRT provides effective processes for removing radium, uranium and other contaminants from water. Our complete package of services includes process equipment, proprietary treatment media, safe exchange of media, and proper handling and disposal of used media

Newsletter Signup
Newsletter Signup

NUTRIENT REMOVAL VIDEOS

More Videos

NEWS

More News

ABOUT

 

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.