RFICs

PRODUCTS

  • WaTalk
    Portable Turbidimeter: WaTalk™

    Portable IoT Drinking Water Quality Tester

  • Connector Gage Kit
    Connector Gage Kit

    Connector gage kits accurately measure coaxial connector dimensions, preventing connection issues and damage. They are available in various types and configurations for different connectors.

  • stabilityplus microwave-rf
    StabilityPlus Phase Stable Cable Assembly

    StabilityPlus™, phase-stable cable assemblies, are designed for high-performance, ruggedized microwave/RF applications. They offer excellent measurement repeatability and durability, reducing the total cost-of-test.

  • PHCbi-MDF-DU702VH-gallery_1_v2
    Obtain Temperature Uniformity With An Ultra-Low Temperature Freezer

    PHCbi brand's 25.7 cu.ft (729L) ultra-low temperature freezer operates on 220V and features VIP Plus vacuum insulated panels to deliver reliable temperature uniformity throughout the chamber. It is ENERGY STAR® Certified and uses only 7.96Wh per day.

  • Switch 350
    Flexible Vision Inspection Equipment For Syringes And Vials

    With our Switch 350, you benefit from the advantages of two machine concepts: We have combined the modularity, handling options, and technologies of our well-proven standard platforms with the flexibility of our small batch inspection machine to run syringes and vials on one and the same machine – with nesting system for syringes and vials alike.

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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.