Pioneering Resource Recovery Study Gets WRF, Utility Funding

The Water Research Foundation has granted $70,000 for project #5108 Acid+ Digestion, an applied research study to optimize acid gas digestion and test a novel process to benefit wastewater treatment and downstream waterways.The Acid+ process recirculates wastewater sludge from methane-phase to acid-phase digesters, potentially accelerating and intensifying digestion capacity by 50%. Subsequently, improved production and quality of biosolids and biogas are produced, requiring less digestion volume.Additionally, Acid+ has the potential to achieve cost effective nutrient recovery while reducing operations and maintenance costs with simple retrofits to existing tankage and equipment to protect from struvite fouling. Struvite — a compound that