SLUDGE & BIOSOLIDS PROCESSING RESOURCES

• Saving The Most Money On Wastewater Aeration: Bringing It All Together

  The power required for aeration is 50 to 60 percent of the electric bill for a municipal wastewater plant, sometimes accounting for up to 4 percent of the associated community’s total power. Energy efficiency is a critical factor in evaluating blower performance.

• Liquid-Only Sewers Offer A Cost-Effective Solution

  Liquid-only sewers (also known as “effluent sewers”) have proven to be a cost-effective solution for municipalities, new subdivisions, and a variety of other areas in need of sewer. As opposed to the big pipes and deep excavations typically required by gravity sewers, liquid-only sewers use small-diameter, shallowly buried mainlines that follow the contour of the land and are easily installed with light-duty equipment, minimizing disturbance to the surrounding area.

• Onsite STEP System Handles Seasonal Peaks At U.S. National Park

  In 2017, the Golden Gate National Recreation Area in California was the second most visited place in the entire U.S. national park system, with almost fifteen million visitors. Established in 1972, it’s also one of the largest national parks located in an urban area, offering a wide variety of activities – from touring Alcatraz Island to hiking Montara Mountain to swimming at Stinson Beach.

• AquaNereda® Aerobic Granular Sludge Technology

  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.

• Your Sewage Is Valuable Muck

  A world without phosphorus is a world without life. But phosphorus is a finite resource, so researchers are recovering it from sewage.

• Microwaving Sewage Waste May Make It Safe To Use As Fertilizer On Crops

  Biosolids — primarily dead bacteria — from sewage plants are usually dumped into landfills. However, they are rich in nutrients and can potentially be used as fertilizers. But farmers can’t just replace the normal fertilizers they use on agricultural soil with these biosolids. The reason is that they are often contaminated with toxic heavy metals like arsenic, lead, mercury and cadmium from industry. But dumping them in the landfills is wasting precious resources. So, what is the solution?

• CASPERON Solution Brings Process, Operation And Cost Benefits To Michigan Facility

  For 15 years, plans to double the capacity of Michigan’s Zeeland Clean Water Plant remained stalled as the City of Zeeland worked toward a joint wastewater treatment contract with two neighboring Ottawa County communities. As a result, maintaining efficient aeration control posed a challenge for the 1.65 million gallons per day (MGD) facility. When expansion plans moved forward in 2016, the city alleviated those problems with the Xylem Sanitaire CASPERON activated sludge solution process, which eliminated the use of lime to treat waste and significantly reduced the volume of biosolid residuals.

• 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.

• Defining High Quality Biosolids: Exploring Options To Create A Market For Biosolid Products

  Water resource recovery facilities (WRRFs) are already aware of the idea that biosolids can be a valuable commodity. Consequently, there is opportunity to grow this market. The use of biosolids can create products that have value and generate a customer demand that ultimately leads to an economic incentive for WRRFs. There are several factors that contribute to the success of biosolid products, like the quality of biosolids and information available about how and where to use high quality biosolids.

• Combining Biosolids Waste Streams? Not So Fast…

  The idea of combining two systems into one sounds like a common-sense solution to simplifying operations.  Wastewater treatment plant operators have been experimenting with this concept by combining waste activated sludge with primary and septage waste streams with the goal of lowering system complexity.  The reality of these efforts is proving, in many cases, to be problematic.