NUTRIENT REMOVAL ARTICLES BY KEVIN WESTERLING
NUTRIENT REMOVAL CASE STUDIES
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
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, 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.
NUTRIENT REMOVAL PRODUCTSMore Products & Services
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
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
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
Looking beyond the wastewater treatment plant for sustainable, holistic solutions to nutrient loading
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
NUTRIENT REMOVAL SUPPLIERS
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 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 Water Treatment Equipment |Wastewater Treatment Equipment |Sludge Management Equipment
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 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, 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.
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 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 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
NUTRIENT REMOVAL VIDEOS
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
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.
Introducing The New Bio-Microbics Mobile App
Bio-Microbics is pleased to announce the availability of our new Mobile App for tablets and Smart Phones! We created the Bio-Microbics APP for a direct link to important pages on our Website in a fun and interactive screen.
After Toledo, Other States Examine Algae
New Minnesota phosphorus regulations, implemented this summer, are being hailed as timely in the aftermath of the Toledo algae crisis.
Fighting The War On Algae: Ohio Ups State Funding To Wastewater Plants
After the Toledo algae emergency, Ohio has announced it will provide additional funding sources to help utilities beat the problem.
The National Association Of Clean Water Agencies And National Milk Producers Federation Sign Landmark MOU To Increase Collaboration On Watershed Improvement Projects
The National Association of Clean Water Agencies (NACWA) and the National Milk Producers Federation (NMPF) signed a Memorandum of Understanding (http://www.nacwa.org/images/stories/public/2014-09-09mou_nacwa_nmpf.pdf) (MOU) recently to promote increased cooperation and communication between the two organizations in their efforts to make watershed-level water quality improvements.
Toledo Water Ban: Was A Deteriorating Treatment Plant To Blame?
The poor condition of Toledo's water treatment plant has played a key role in the city's struggle with algae, which resulted in a water ban for 400,000 people in August.
Great Lakes Restoration Initiative Provides Funding To Target Harmful Algal Blooms In Lake Erie
U.S. Environmental Protection Agency Administrator Gina McCarthy recently announced that the Great Lakes Restoration Initiative (GLRI) will provide almost $12M to federal and state agencies to protect public health by targeting harmful algal blooms (HABs) in western Lake Erie.
Recycle/Reuse Test Program For The Hydroponic Greenhouse Industry Positive Stage Two Preliminary Results
Dr. Gene Shelp, President and CEO of ENPAR Technologies Inc. (“ENPAR” or “the Company”), is pleased to announce that operation of the ESD CapDi unit was initiated last week at an Ontario hydroponic greenhouse operation.
Toxic Algae Prep A Priority In Michigan
Ottawa County, MI, wants to be ready if toxic algae strikes.
New Sustainable Protein For Animal Nutrition Introduced By Nutrinsic
Nutrinsic Corporation (www.nutrinsic.com) is introducing a new sustainable protein product for animal feed.
Water And Agriculture Leaders Plant Seeds For Environmental Progress In Rare Collaboration
The US Water Alliance issued a report recently highlighting common ground and innovative strategies between agriculture and water and wastewater utilities to reduce nutrient pollution in the Mississippi River Basin.
The World’s Largest Deammonification System To Be Provided By World Water Works For DC Water
World Water Works, Inc., a leading designer and manufacturer of wastewater treatment solutions, has been selected by the District of Columbia Water and Sewer Authority – Blue Plains (DC Water) to provide its DEMON technology.
Algae Systems Testing Algae Bio-Fuel Production
Algae Systems LLC completed demonstration of a new biofuel production approach in early-August jointly with Japan’s IHI Corporation.
Toxic Algae's Newest Hot Spot
It's not just Toledo struggling with blue-green algae.
USDA Invests New Conservation Funds To Improve Lake Erie Water Quality
Agriculture Secretary Tom Vilsack announced recently that $2M in conservation funds will be sent to Ohio to help implement conservation techniques that will help improve water quality.
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.