Ostara-WASSTRIP-Brochure-FINAL-Web.pdf

WASSTRIP? (Waste Activated Sludge Stripping to Remove Internal Phosphorus) complements Ostara’s Pearl? nutrient recovery process in bio-P plants by releasing magnesium, potassium and phosphate before it reaches the WAS thickening stage. Providing a more comprehensive nutrient management solution, WASSTRIP increases process efficiency and energy recovery potential. By effectively stripping struvite from wastewater treatment systems, WASSTRIP improves plant performance, increases digester capacity, and helps efficiently produce drier, more balanced biosolids. ?TREATED EFFLUENT CRYSTAL GREEN PRILLS SECONDARY TREATMENT INFLUENT EFFLUENT ANAEROBIC DIGESTER WASSTRIP? SLUDGE LIQUOR SLUDGE TH ICK EN ER DE -W AT ER ING LIQUOR SLUDGE PHOSPHORUS AND AMMONIA PHOSPHORUS AND MAGNESIUM TARGETED STRUVITE CONTROL WASSTRIP? ? Improved digested sludge dewaterability ? Struvite scale protection throughout the sludge treatment stream ? Reduced biosolids phosphorus content ? Improved digestion performance ? Increased production of Crystal Green? fertilizer ? Reduce total phosphorus by up to 9% ? Reduce water soluble P in biosolids by 70% ? Increase dryness of cake while reducing volume by up to 20% BIOSOLIDS W A SSTRIP HOW IT WORKS WASSTRIP? tackles struvite issues; improving dewaterability, reducing biosolids production, and preventing struvite formation throughout the wastewater treatment plant. The thickening liquor, such as GBT filtrate, DAF subnatant etc., is diverted from the sludge stream and combined with dewatering liquor so the nutrients can be recovered for reuse in the Pearl? reactor, virtually eliminating the buildup of struvite throughout the system. A cost-effective and complementary solution upstream of the Pearl process, WASSTRIP solves struvite issues before they start. BO O ST D EW ATERA BILITY IMPROVE DIGESTED SLUDGE DEWATERABILITY By releasing nutrient compounds before they reach the digester, WASSTRIP? improves dewaterabilit