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NUTRIENT REMOVAL ARTICLES BY KEVIN WESTERLING

Do You Know The Value Of Decentralized Infrastructure?

Do You Know The Value Of Decentralized Infrastructure?

According to the National Onsite Wastewater Recycling Association, onsite and decentralized wastewater treatment systems are an important part of a country’s permanent wastewater infrastructure.   Continue Reading...
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...
From the Editor

NUTRIENT REMOVAL CASE STUDIES

  • Wastewater Plant Taking Proactive Measures To Protect Natural Resources
    Wastewater Plant Taking Proactive Measures To Protect Natural Resources

    The Prince William County Service Authority carefully considers its impact to the environment when conducting wastewater treatment.

  • Retrofit Helps WWTP Meet New Total Nitrogen Limit
    Retrofit Helps WWTP Meet New Total Nitrogen Limit

    The City of East Providence WWTP was asked by RIDEM to upgrade its facilities to increase treatment capacity and also meet a new more stringent Total Nitrogen limit.

  • 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.

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NUTRIENT REMOVAL PRODUCTS

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.

ActiveCell® Integrated Fixed Film Activated Sludge

ActiveCell® Integrated Fixed Film Activated Sludge

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.

METEOR® IFAS / MBBR Process

METEOR® IFAS / MBBR Process

METEOR® IFAS/MBBR technology is based on proprietary polyethylene biofilm carriers, which, when added to a treatment basin, provide a large internal surface area for the growth of microorganisms.

Wastewater Reuse

Wastewater Reuse

As world populations require both more clean water and better ways to dispose of wastewater, the demand for water reclamation will increase.

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NUTRIENT REMOVAL ARTICLES

  • Application Note: Building A Baseline In Florida The Florida Department of Environmental Protection (DEP) knows that establishing dissolved oxygen (DO) and nutrient criteria for the state’s water bodies is a challenge – both scientifically and politically
  • Biological Nitrogen Removal for MSW Landfill Leachate Treatment
    Biological Nitrogen Removal for MSW Landfill Leachate Treatment

    Prior to the early 1970s, landfill design did not include any form of barrier systems to prevent leakage of contaminants to the surrounding environment.

  • Engineering Angle: The Future Is Here — Embracing A New Paradigm In The World Of Water
    Engineering Angle: The Future Is Here — Embracing A New Paradigm In The World Of Water

    Among the prominent advancements in improving public health and environment over the past two hundred years, collection and treatment of domestic wastewater ranks near the top.  The traditional view of wastewater treatment has been of a “linear pipeline,” whereby wastewater is collected at one end of a watershed, transported as quickly as practical to the other end, where it is treated and discharged to the nearest waterbody as a disposal byproduct. By Art Umble, Ph.D., MWH Wastewater Practice Leader for the Americas region

  • The Benefits Of An Integrated Watershed Approach To Nutrient Management
    The Benefits Of An Integrated Watershed Approach To Nutrient Management

    Looking beyond the wastewater treatment plant for sustainable, holistic solutions to nutrient loading

  • White Paper: Wastewater Lagoons - A New Aeration Concept
    White Paper: Wastewater Lagoons - A New Aeration Concept The use of wastewater treatment lagoons, or stabilization ponds, is a common practice for rural municipalities and industrial facilities. Through the years there have been numerous designs for these ‘sludge settling basins,’ ranging from facultative, partial aerated, and fully aerated systems. By Jim Dartez, RELIANT Water Technologies
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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

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NUTRIENT REMOVAL VIDEOS

  • Water Purification Solutions From Severn Trent Services
    Water Purification Solutions From Severn Trent Services

    Severn Trent Services offers a broad range of water treatment technologies concentrated around disinfection and filtration. In this video, Sales Director John Dyson highlights the new Anchor-Rite® design for the TETRA® LP Block™, dual parallel lateral underdrains that are popular with plant owners as a retrofit or for new filter underdrain applications. Find out how the company is currently working with customers to identify needs and plan their product portfolio accordingly.

  • 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.

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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.