RFICs

PRODUCTS

  • Empower participants, clinicians, and observers. Enable convenient and accurate outcome reporting, enhancing data quality and study efficiency with electronic patient reported outcomes (ePRO) and electronic clinical outcome assessments (eCOA).

  • 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.

  • The intrinsically safe level monitoring system utilizes advanced radar sensing technology to provide cost-effective, reliable, battery-powered wastewater level monitoring. This award-winning system, recognized with the Environmental Protection Award, is ATEX-certified for use in Zone 0 hazardous areas.

  • Our Approach

    At Southern Star Research, we have extensive experience across all aspects of clinical operations and a wide range of therapeutic areas. We specialize in providing flexible, high-quality, and custom solutions that help you deliver regulator-ready data on time and at a predictable price.

    As a large proportion of our clients are geographically dispersed, we understand how important it is to be able to trust that your CRO is working in your best interests. That’s why we pride ourselves on building strong, transparent, and close relationships with our clients.

    Our team of experts will guide you through the clinical trial process using a proactive and collaborative approach, ensuring that your stakeholders are always informed, in control, and confident throughout the journey.

  • Combining proven design principles with patented features, our Sealless gear pumps are safe, simple, and reliable. Structurally rugged with corrosion resistant materials, Eclipse rotary pumps are an ideal fit for many corrosive liquids. From acids to bases, we cover the entire pH scale.

WHITE PAPERS AND CASE STUDIES

NEWS

ABOUT

 

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.