RFICs

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  • GettyImages-2184219690-chimeric-antibody-3d-render
    Find Your Ideal Solution For Multiplex Imaging And Spatial Proteomics

    Discover our range of chimeric antibodies, find your ideal solution for multiplex imaging and spatial proteomics, and discover how you can save time and improve the reproducibility of your results.

  • Mettler-Toledo Hi-Speed Checkweigher, Model CS3400GT-MM
    Used Mettler Toledo Hi-Speed Checkweigher: Model CS3400GT-MM

    Used Mettler-Toledo Hi-Speed checkweigher, model CS3400GT-MM, with controls, serial# 14030.

  • Capsule Polisher
    Pharmaceutical Capsule Polisher

    When it comes to your capsules, cleanliness is key. That’s why this revolutionary polisher guarantees that all areas of the polisher are easy to clean. The one-piece cylindrical polishing chamber promotes powerful, cyclonic air flow ensuring continuous movement and ease of cleaning.

  • Fluid Air 300 Liter Fluid Bed Dryer, Model 300
    Unused 300 Liter Fluid Air Pharmaceutical Fluid Bed Dryer

    Unused Fluid Air 300 liter fluid bed dryer, model 300, 316 stainless steel contact parts, 304 non product contact, includes tower, filter system, explosion suppression system, product bowl with automatic side discharge, hydraulic bowl lifting system, spray nozzles (for possible conversion to top spray granulation), HMI and machine controls, valves, and other associated parts, serial# 10440, built 2014.

  • MDF-DU502VXC_04_photo_ap3_920x920_v3
    PHCbi TwinGuard® -80℃ Ultra-Low Temperature Freezer: MDF-DU502VXC-PA

    PHCbi brand's 18.6 cu.ft (528L) ultra-low temperature TwinGuard freezer features a dual cooling system to offer our highest level of sample protection through the use of two independent refrigeration systems. The combination of these two circuits work together for fast temperature recovery while keeping ultra-low temperatures if one refrigeration system fails to cool. This freezer is ideal for safe, long term storage of your most high valued products, such as stem cells, embryos, cell lines, rare specimens, and other biological materials.

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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.