Sludge & Biosolids Processing Resources

1. ATAD Provides Increased Capacity With No Odors 7/1/2025

   Faced with persistent odor complaints and limited space, Douglas County Sewer District #1 in East Wenatchee, Washington, turned to the ThermAer second-generation Autothermal Thermophilic Aerobic Digestion (ATAD) system to modernize its biosolids treatment.

2. Anaerobic Digestion Optimization System Provides Exceptional Improvements 6/18/2025

   Faced with soaring ammonia loads—especially during race weekends when 250,000+ fans descend on the town—the Speedway, Indiana Wastewater Treatment Plant was in urgent need of a solution.

3. 2nd Generation ATAD Provides Superior Treatment 6/18/2025

   In a bold move to modernize its wastewater treatment, Bowling Green, Ohio, installed the state’s first second-generation Autothermal Thermophilic Aerobic Digestion (ATAD) system—ThermAer—in 2004. The upgrade expanded the plant’s capacity from 6 to 10 MGD and replaced an inefficient, odor-prone coarse-bubble aeration system.

4. California's First Installation Of 2nd Generation ATAD 6/11/2025
5. The Real Cost Of Wastewater Treatment: MBR Reshapes The Equation 6/2/2025

   For years, conventional activated sludge (CAS) has been the default in wastewater treatment. But the industry is changing.

6. Sludge Costs Are Wrecking Wastewater Budgets. Here's How MBR Can Help 4/25/2025

   Sludge management costs aren’t going away, so your team needs to find a solution. Land application bans, PFAS regulations, and rising disposal costs are making sludge an even bigger financial liability.

7. How A City's Sewage System Can Generate Renewable Natural Gas Production And Earn Royalties 12/16/2024
   Imagine if wastewater treatment plants (WWTPs) — typically associated with managing sewage — could instead become known for fueling a more sustainable future.
8. Time-Based Treatment Is A Game Changer For Activated Sludge, Granular Sludge, And Densified Sludge 10/15/2024

   Time-based batch processing allows WWTPs to gain the benefits of new suspended growth technologies in a much smaller footprint.

9. Enhancing Treatment Capacity With miGRATE™ Technology At Verrado WRF 9/2/2024

   Due to rapid population growth in its service area, Verrado Water Reclamation Facility (WRF) in Verrado, Arizona faced a challenge. Its existing treatment capacity of 1.54 millions of gallons per day (MGD) had become insufficient to meet the rising demand and comply with both Total Suspended Solids (TSS) and Total Nitrogen (TN) permits.

10. Cutting Costs, Not Corners: How PRI-TECH® Transformed Biosolids Odor Control At Bergen Point WWTP 6/28/2024

    The Suffolk County Department of Public Works tested the effectiveness and cost-efficiency of PRI-TECH® in controlling odors at a wastewater treatment plant. The technology successfully treated odors and reduced operating costs.