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  • Teledyne FLIR - thermal camera
    Advanced Thermal Camera: A6301

    The FLIR A6301 Advanced Thermal Camera offer engineers and system integrators the best and most advanced thermal camera for Process Control, Monitoring and Quality Assurance.

  • Cell Lab GettyImages-1183901928
    CGT Expert Consulting Team

    At ProPharma, our Cell and Gene Therapy consulting team offers a comprehensive and integrated approach to early-stage cell and gene therapy development. Our expert team provides a range of services, including IND/CTA preparation, manufacturing technology, safety and risk assessment, and development planning, to help our clients navigate the complex and ever-changing landscape of cell and gene therapy development.

  • BlueLinQ Pro Controller
    BlueLinQ Pro Controller

    The efficiency and reliability of your network pumping stations can be improved in many ways – even without changing a single pump. The BlueLinQ Pro controller is an easy, all-in-one solution that can boost performance and safeguard a 1-6 pump station.

  • fairbanks-5440
    Pentair Fairbanks Nijhuis 5440 & 2440 Series Vertical Close-Coupled Solids Handling Pumps

    Fairbanks Nijhuis vertical close-coupled solids-handling pumps have over 100 years of proven experience in the pumping of solids, slurries, sludge, pulp, trash, sewage and grit. These pumps are specifically designed to pass solids, trash and long, stringy materials.

  • 2247
    5400-5900 MHz, 30000 Watt High Power RF Amplifier Systems: SKU 2247

    Elevate your RF applications with the Empower RF Model 2247, a cutting-edge amplifier system designed to deliver up to 30kW peak pulsed output power.

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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.