Nutrient Removal Resources

  1. Wastewater Nitrogen Is Causing Ecological Havoc, But The Necessary Innovative Solutions Exist 12/21/2020

    The water quality damages associated with excessive nitrogen discharges to our surface and groundwaters that result in life-threatening harmful algae blooms (HAB), the loss of shellfish and finfish, and the degradation of our groundwater drinking water aquifers are now ubiquitous in the U.S. and worldwide. Wastewater nitrogen discharges are typically the elephant in the room when the sources of nitrogen are quantified. Septic nitrogen discharges, in particular, are the primary cause of water-quality/ecological degradation in many, especially coastal, areas.

  2. Addition Of inDENSE & AvN At Water Reclamation Facility Results In Drastic Changes In Plant Performance And Operations 9/23/2020

    In the interest of utilizing their existing infrastructure, the City of Pueblo, CO, evaluated technologies that would help intensify their existing process. WWW worked with their consulting engineer and identified two biological process modifications. Selective wasting through gravimetric selection using the inDENSE™ technology and advanced aeration control using AvN™. 

  3. Anammox Sidestream Deammonification Process Allows Plant To Reduce Capital And Infrastructure Costs 9/23/2020

    Pierce County’s main goal was to reduce the discharge of nitrogen to Puget Sound while also reducing plant operating costs while in nitrogen removal mode. After upgrading, the new system continues to remove greater than 80 percent of ammonia and 75 percent of total inorganic nitrogen, equating to a reduction of over 400 tons per year of nitrogen loading to Puget Sound.

  4. Municipality Looks To Expand Plant Capacity While Reusing Existing Systems 9/23/2020

    Sharjah Municipality of the Untied Arab Emirates (U.A.E.) was requiring to treat more and more flow despite having very little space for new treatment systems. They were looking at wanting to expand their plants No. 4 & No. 5 plants to meet new total nitrogen limits and try to do so by having to reuse the existing systems. This type of upgrade would save on cost as well as space at the plant.

  5. Water Stressed City Looks At Opportunities To Reuse And Recycle Tertiary Treated Municipal Sewage For Cooling Tower Application 9/23/2020

    Bengaluru, being a water stressed city, was looking at opportunities to reuse and recycle of tertiary treated municipal sewage for cooling tower application in a nearby power plant. Jakkur STP, being a 10 MLD plant based on conventional anaerobic + conventional activated sludge, was identified to supply about 15 MLD of recycled water for the power plant. The entire plant was designed and retrofitted as two process trains of 7.5 MLD. Read the full case study to learn more about why Integrated Fixed Film Activated Sludge technology (IFAS) was determined to be the best suitable upgrade.

  6. IFAS System Produces High Quality Effluent In East Central Kansas 9/23/2020

    The City of Emporia, in East Central Kansas, recently experienced an increase in population and more stringent effluent permit requirements resulting in a strained wastewater treatment plant. Emporia retained the services of a local engineering firm to evaluate the current and future needs of the system and recommend an economical, sustainable, and effective solution. After evaluating several options, World Water Works’ Integrated Fixed Film Activated Sludge (IFAS) conformed to all the requirements and was selected.

  7. AquaSBR® Replaces 60-Year-Old Treatment Plant 9/1/2020

    The Moab Water Reclamation Facility (WRF) was initially constructed in the late 1950’s to provide primary treatment of domestic wastewater for the Moab area. However, the plant could no longer keep up with the higher flows and loading due to population growth and rising tourism. In addition, with aging infrastructure and the new permit cycle in sight, upgrades to the biological treatment were necessary to ensure full compliance. Read the full case study to learn more.

  8. Supporting Innovations To Reduce Nitrogen Pollution From Septic Systems 5/20/2020

    Septic systems are common in coastal marine communities on the East Coast of the United States. Septic systems consist of subsurface wastewater treatment structure and use a combination of natural processes and technology to treat residential sanitary waste and greywater from bathrooms, kitchen drains, and laundry. Partially cleaned wastewater is discharged from septic tanks into drain fields, where the water is further treated through biological processes as it travels through gravel, soil, and can eventually reach groundwater. Groundwater linkages with surface waters can then transport any nutrients and contaminants that are present in discharge directly into coastal waters.

  9. AquaNereda® Aerobic Granular Sludge Technology 4/10/2020

    The AquaNereda® Aerobic Granular Sludge (AGS) Technology is an innovative biological wastewater treatment technology that provides advanced treatment using the unique features of aerobic granular biomass. An aerobic granular biomass is comprised of compact granules that provide advantages compared to other secondary treatment processes.

  10. Abbottstown Retrofitted A Flow-Through System With An AquaSBR® System To Meet Stringent Effluent Requirements 4/9/2020

    The Abbottstown-Paradise Joint Sewer Authority was incorporated in 1973 and utilized a continuous flow activated sludge system with an average daily design flow of 0.21 MGD. At that time the plant was only required to reduce total suspended solids (TSS) and effuent ammonia to required levels to serve the area population of about 2000. Due to urban growth and increased storm flow runoffs, the plant was in need of an expansion and upgrade by the late 1990s.