NUTRIENT REMOVAL ARTICLES BY KEVIN WESTERLING
NUTRIENT REMOVAL CASE STUDIES
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.
Meeting State Nutrient Regulations With SBRs
After the Missouri Department of Natural Resources reclassified the effluent receiving stream in the city of Sullivan, officials learned that its wastewater treatment lagoon required a more advanced treatment process to comply. They selected a continuous-flow sequencing batch reactor (SBR) system that utilizes a modified activated sludge biological treatment. The new infrastructure has provided cost-saving results for the ongoing removal of nitrogen and phosphorous.
Disc Aerators Replace Brush Aerators, Increasing Capacity And Performance
To comply with new EPA rules and handle additional flow, the City of St. Charles Missouri WWTP required a capacity increase, and the landlocked plant needed a solution that would fit within its existing footprint. Brush aerators and boat clarifiers were replaced with 12 VLR-mounted disc aerators to fulfill the oxygen requirement while allowing for the treatment of higher organic loading. The solution provided increased nutrient-removal capacity and improved efficiency without increasing tank volume.
NUTRIENT REMOVAL PRODUCTSMore Products & Services
NUTRIENT REMOVAL ARTICLES
Development Of MBR Suitable For Retrofit With Flat Sheet Membrane
In sewage works of Japan near bay areas, the tightening of restrictions on nitrogen and phosphorus has resulted in greater needs for reconstruction and replacement of infrastructure, to switch from the conventional activated sludge process to the advanced treatment process without newly expanding aeration tanks.
Simultaneous Determination Of Total Bound Nitrogen (TNb) And Total Organic Carbon (TOC) In Aqueous Samples Total bound nitrogen (TNb) consists of dissolved ammonia, nitrates, nitrites, amines, and other organic nitrogen-containing compounds. TNb measurements represent an alternative to Total Kjeldahl Nitrogen (TKN) analysis for rapid screening of industrial wastewater, drinking water,agricultural run-off, and surface waters. By OI Analytical
White Paper: Biological Nutrient Removal Microbiology Metabolic Pathways of Biological Nutrient Removal Biological Nutrient Removal (BNR) is critical for the preservation of our lakes and streams... Large amounts of waste products are passed through our sewage treatment systems on a continuous basis...
White Paper: Studies Of A Microbial Mixture With Useful Properties For The Treatment Of Organic Sewage The importance of bacteria in the treatment of raw sewage and water purification is well known. Here, we report on Sewper Rx, a unique mix of bacteria with powerful properties for treating sewage as well as other water cleaning applications. By Brian T. Butcher, PhD and Lisa Morici, PhD
Save Nutrients, Save The World
While regulations demand that wastewater treatment plants get nutrients out of the water, the world’s food supply may demand more — that we recover and reuse them.
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 is the Equipment Business Line Division of Degrémont, S.A., the international water treatment plant specialist, and a subsidiary of SUEZ ENVIRONNEMENT, a key player in the field of sustainable development.
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 Solutions & Technologies
Veolia Water Solutions & 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
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.
Video: Vertical Loop Reactor (VLR) System
VLR® Systems utilize a vertical loop based design with looped reactors in series that allows DO stratification. As such, it is suited for simultaneous nitrification/denitrification; biological phosphorus removal and storm water treatment.
Are Farmers To Blame For Nutrients, Algae In Lake Erie?
As summer approaches, government and utility officials are preparing to ramp up the fight against algae on Lake Erie.
Louisiana Takes On 'Dead Zones' By Tackling Nutrients
Louisiana has a new plan to reduce nutrients in rivers.
Algae Blooms Threaten Lake Erie
Algae on Lake Erie is presenting major obstacles to drinking water treatment plants.
EPA Finalizes Effluent Limits For Construction Sector
A new EPA rule attempts to mitigate nutrient pollution from the construction, utility, and housing sectors.
AMERICAN Flow Control Valve And Hydrant Digital Manual Now Available
Customers, contractors, engineers and project managers now have on-the-go access to information on AMERICAN Flow Control (AFC) products with the introduction of the AFC Valve and Hydrant Digital Manual.
Farmers, States Push Back On EPA's Chesapeake Nutrient Standards
Florida, Texas, and Alaska have taken a keen interest in the EPA's Chesapeake Bay cleanup efforts —in spite of the many miles between them and the bay.
Gary Cappeline Named Evoqua Water Technologies Interim CEO; Mark Roos Interim CFO
The Evoqua Water Technologies Board of Directors has named AEA Investors LP Operating Partner Gary Cappeline interim CEO and Mark Roos, formerly CFO of Unifrax LLC, previously an AEA portfolio company, interim CFO.
Senate Passes Bill To Fight Algae
As water utilities combat massive growths of toxic blue-green algae festering in water sources, the Senate is trying to lend a hand.
New Report Explores Smarter Nutrient Management
In the past century, population growth, urbanization and intensified agricultural practices have combined to increase strain on wastewater treatment facilities.
Xylem Solution Cuts Annual Operational Costs At Italian Wastewater Treatment Plant By 65 Percent
Xylem Inc., a leading global water technology company dedicated to solving the world’s most challenging water issues, has reduced the energy consumption of a wastewater treatment plant in Italy by 65 percent.
Xylem Names Patrick K. Decker President And Chief Executive Officer
Xylem Inc. (NYSE: XYL), a leading global water technology company dedicated to solving the most challenging water issues, today announced that Patrick K. Decker has been named President and Chief Executive Officer, and will be appointed a member of the Board of Directors on March 17. He joins the company from Harsco Corporation, where he has been President and CEO. At Xylem, Mr. Decker succeeds Steven R. Loranger who will remain a member of the Xylem Board. Mr. Loranger was Chairman, President and CEO of ITT Corporation when it spun its water businesses off as Xylem in October 2011.
Assessing Nutrient Inputs To The Nation’s Estuaries And Great Lakes
Nutrient enrichment of our nation's streams, lakes, and estuaries is widespread and can contribute to harmful algal blooms, increasing costs for drinking water and causing declines in ecosystem health.
USDA Announces New Grants To Help Communities Meet Water Challenges In Coming Years
Agriculture Secretary Tom Vilsack announced recently that USDA's National Institute of Food and Agriculture (NIFA) will make $6M in grants available this year, and up to $30M total over the next five years as part of a new initiative to provide solutions to agricultural water challenges.
Skye Petroleum Acquires Patented Technology For The Removal Of Volatile Phosphate From Hydrocarbon Based Fracturing Fluids
Skye Petroleum, Inc. (Pink Sheets: SKPO) is pleased to announce that it has acquired (from a private company) a patent recently issued by the U.S. Patent and Trademark Office.
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.