Struvite recovery from anaerobically digested waste-activated sludge: A short review

Abstract Effective treatment of waste streams such as municipal waste-activated sludge (WAS) presents an opportunity for energy and nutrient recovery, water reclamation, mitigation climate change. WAS is a product the activated (AST) process widely used wastewater. Currently, disposal account up to 50% total operation cost 40% greenhouse gas emissions from wastewater plants. Anaerobic digestion (AD) usually preferred since it more economical compared other existing technologies. The decomposition during AD releases nutrients, which are then discharged in anaerobic effluent, polluting recipient bodies increasing burden. mainly nitrogen (N), phosphorus (P), potassium (K), can be crystallised into struvite (magnesium ammonium phosphate, NH 4 MgPO .6H 2 O) with numerous agricultural applications fertilisers. present review focusses on recovery anaerobically digested its potential application crop production. Graphical