RFICs

PRODUCTS

  • Exodus - AMP2065A-LC
    6 - 18 GHz, 200 W Solid State High Power Amplifier: AMP2065A-LC

    The AMP2065A-LC is a solid-state high-power amplifier designed for a wide range of applications. It has a frequency range of 6-18 GHz, a minimum power output of 200 watts, and a power gain of 53 dB.

  • Marki - MFBP-00075CH
    36.39 - 39.80 GHz Bandpass Filter: MFBP-00075CH

    The MFBP-00075CH passive MMIC bandpass filter die is an ideal solution for small form factor, high rejection filtering.

  • ODiate® Fluorescence Filter Sets
    ODiate® Fluorescence Filter Sets

    ODiate Fluorescence Filter Sets are designed to meet the demanding requirements of fluorescence and microscopy applications.

  • PHCbi's Cell-IQ Stackable Multigas Incubator
    Stackable Multigas CO2/O2 Incubator

    PHCbi brand's 1.8 cu.ft (50L) Cell-IQ stackable multigas CO2/O2 incubator is designed to help deliver a contamination-free environment using passive decontamination controls such as our patented inCu-saFe® interior and optional SafeCell™ UV. CO2 and O2 quickly return to setpoint after door openings. Its compact design allows the units to be double or triple stacked for maximized footprint. A streamlined interior optimizes space and reduces contamination risk while improving ease of maintenance.

  • infoworks-WS-pro
    InfoWorks WS Pro

    With Autodesk InfoWorks WS Pro, engineers can accurately model water distribution systems.

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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.