RFICs

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  • Ultralite connector
    UltraLite RF Cable Connectors

    UltraLite RF Cable Connectors are designed to perform at high frequencies and harsh environments with lower weight compared to their steel and brass counterparts by leveraging aluminum construction.

  • hydroconn-series-iv
    HYDROCONN® Series IV

    Geospace Technologies offers a complete line of AMI water meter connector cables specifically designed and manufactured to meet the rugged requirements for in-pit, underwater applications. Geospace’s unique design ensures total moisture sealing for even the toughest underwater environments, yet they are easily re-entered for troubleshooting a transponder or for a meter swap-out. Versions are available that utilize molded-in-place or potted terminators for sealing. Either version is totally intermateable with the Itron Inline Connector.

  • GettyImages-512051390-antibody-antibodies
    Alzheimer's Imaging, Simplified

    Find what you need to move your Alzheimer’s research forward faster, with antibodies to 95% of core AD genes validated in imaging applications with human samples.

  • S-Band GaN Solid State Power Amplifier (SSPA): VSS3607
    S-Band GaN Solid State 1.3 kW Power Amplifier Module: VSS3607

    CPI EDB presents the VSS3607 GaN solid state power amplifier (SSPAs) operating in the S-band (2.7 – 2.9 GHz). These high efficiency, high power, compact amplifiers are easy to maintain, and are designed for use in air surveillance radar applications.

  • GettyImages-2036497686-lab-team-collaboration-laboratory-tablet-computer
    Avance Clinical's Specialist Areas Of Focus

    Avance Clinical offers deep scientific expertise and extensive knowledge across a range of specialized therapeutic indications, consistently achieving global regulatory approvals.

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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.