RFICs

PRODUCTS

  • Fairview - RF Fixed Attenuators
    RF Fixed Attenuators With 2.4mm Connectors

    Elevate your signal management capabilities with Fairview Microwave's RF fixed attenuators featuring 2.4mm connectors and high-power ratings.

  • Used Feldmeier 200 Liter Stainless Steel Pharmaceutical Tank
    Used Feldmeier 200 Liter Stainless Steel Pharmaceutical Tank

    Used 200 liter Feldmeier reactor, 316L stainless steel construction, approximately 26" diameter x 25" straight side, removable dish top, dish bottom, rated 60 psi and full vacuum at 302 f internal, jacketed for 125 psi and full vacuum at 353 f, .75 hp bottom mounted agitator drive, 230/460 volt, serial# SO29512, national board# 4463, built 2012.

  • Natoli Tablet Presses- Feature
    Pharmaceutical Tablet Presses

    Natoli’s line of affordable tablet presses is designed, engineered, and manufactured in the U.S.A. and built on our decades of experience in the tableting industry. We know our customers want presses that efficiently meet their R&D and/or production needs.

    With Natoli you have a choice in your tablet press: R&D or production, single-station or rotary, fully automated or manual. Whatever your need, Natoli’s best-in-class tablet presses can help you optimize tablet quality while saving time and reducing costs.

  • 46 Cu Ft Littleford Mixer
    Used 4.6 Cu Ft Littleford Plow Mixer, S/S, 10 HP, Model FM 130-D

    Used Littleford mixer, model FM-130-D, stainless steel construction, 4.6 cu ft total capacity, 2.8 cu ft working capacity, 10 HP 230/460 volt main drive, plugged chopper opening, no mount, air purge seals, manually operated flush type discharge, on stand, serial# 43608-5972, built 2011.

  • Advanced Photonix - Silicon Carbide (SiC)
    Silicon Carbide Photodiode: APX-SC0010

    The APX-SC0010 is a Silicon Carbide (SiC) Broadband UV photodiode for ultraviolet source monitoring featuring a 1mm2 active area.

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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.