FEATURED ARTICLES

• Advancing Dairy Wastewater Treatment

  To help you select the best wastewater treatment strategy for your dairy processing application, this white paper provides a helpful overview of some of the challenges you will encounter including biochemical oxygen demand (BOD), total suspended solids (TSS), nitrogen and phosphorus removal.

• Advancing Meat Wastewater Treatment

  To help you select the best wastewater treatment strategy for your meat processing application, this white paper provides a helpful overview of some of the challenges you will encounter including biochemical oxygen demand (BOD), total suspended solids (TSS), nitrogen and phosphorus removal.

• Addition Of inDENSE & AvN At Water Reclamation Facility Results In Drastic Changes In Plant Performance And Operations

  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™. 

• Anammox Sidestream Deammonification Process Allows Plant To Reduce Capital And Infrastructure Costs

  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.

• Municipality Looks To Expand Plant Capacity While Reusing Existing Systems

  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.

• Water Stressed City Looks At Opportunities To Reuse And Recycle Tertiary Treated Municipal Sewage For Cooling Tower Application

  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.

• IFAS System Produces High Quality Effluent In East Central Kansas

  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.

• MBBR Technology Helps Plant Maintain Discharge Compliance, Achieve Sustainable Growth

  A bacon processing plant in the Midwest was overloaded by more than 50%. Even though the system continued to maintain compliance, the plant proactively decided to expand its wastewater treatment facility to ensure they met their growing demand and maintained their standing as exemplary corporate citizens and environmental stewards.

• Frozen Vegetable Supplier Exceeds Effluent Requirements With MBBR

  A frozen vegetable company was the premier supplier of individually quick-frozen onions, potatoes, roasted potatoes and vegetable blends to large food service companies. At their processing facility, a significant barrier to growth was faced due to an aging wastewater treatment system, which could not treat the anticipated flows that a plant expansion and production increase would generate. 

• DAF System Effectively Removes 95% Of TSS For Railcar Bearing Manufacturer

  A manufacturer of railcar bearings, wheels, and axles needed a wastewater system upgrade to treat for oil, grease, suspended solids, and dissolved metals in a mix of process water and storm water runoff. The existing wastewater treatment system in place at the facility consisted of a small equalization tank, traditional clarifier and sand filter. 

• Slashing Recycled Ammonia Loads From Dewatering Sidestreams

  Recycling is generally considered a positive thing, except when the sidestream discharge from the dewatering of anaerobic digested sludge can recycle up to 40 percent of the total nitrogen or ammonia load in the original flow back to the head of the wastewater treatment stream. Deammonification technology using anaerobic ammonium oxidation/anammox bacteria offers a cost-effective way to break that vicious cycle and meet regulatory discharge limits.

• Ephrata Borough Authority Battles Chronic Sludge Settling

  Ephrata Borough Authority WRRF, located in the MidAtlantic region of the United States, has been battling chronic sludge settling issues since undergoing a BNR upgrade in 2011 to meet new permit limits. During the winter months, SVI values have reached as high as 300 mL/g.

• Dissolved Air Flotation (DAF) Pilot System Achieves Removals In Excess Of 95 Percent

  The aluminum casting facility of a producer of semifabricated aluminum products utilizes a closed-loop contact water system that supplies water to multiple DC casting pits. An existing induced air flotation (IAF) system was used for the reduction of TSS, NTU, oil and grease, followed by a cooling tower. The treated and cooled water was then reused in the caster as contact water. The IAF had a removal efficiency of approximately 40 percent, required regular maintenance attention, operated at 125 HP and used an excessive amount of chemistry, resulting in extraordinarily high operating costs.

• MBBR-DAF System Drastically Reduced BOD And TSS Amounts Released Into Nearby Harbor

  Ladysmith, BC is home to nearly 8,000 people on the western coast of Canada and has a history of coal mining, forestry, rail and marine industry. An existing wastewater treatment plant (WWTP) provided treatment to the town’s wastewater before discharging to the Ladysmith Harbor. The plant removed primarily particulate matter and suspended solids from the wastewater to be driven to a composting site. The existing system met some needs, but would not be able to achieve the future BOD and TSS effluent limits proposed to the town.

• MBBR System Implements Nitrogen Reduction Plant Improvements

  Hopewell Water Renewal (HWR) is a 50 MGD secondary wastewater treatment plant that treats the wastewater from local industries and domestic sources of the Hopewell, VA area. The plant began operating in 1977 and treats approximately 85% industrial waste. The facility achieves the treatment permit requirements for both BOD and TSS; however, treatment regulations have changed over the years and now require the removal of nutrients. HWR discharges effluent into Gravelly Run, a tributary of the James River and Chesapeake Bay Watershed.

• MBBR-DAF System Provides The 'Perfect Solution' For Alchemist Brewery

  Alchemist Brewery is a microbrewery specializing in brewing, packaging and distributing its award-winning IPA beer, Heady Topper. An unprecedented following of the signature ale drove the need for a larger brewery and retail sales center. The brewery operates with a profound respect for environmental responsibility, so with a new facility in the horizon, there was opportunity to explore wastewater treatment system options that would allow them to minimize their impact on the town’s wastewater infrastructure.