A constant composition technique for quantifying the effect of As(V) on struvite crystallization under various operational conditions

•Constant composition technique accurately measured the crystal growth rate of struvite.•The roles of the coprecipitation and adsorption of As(V) in its interaction with struvite were evaluated.•The inhibitory efficiency of As(V) on struvite crystallization was up to almost 50%.•As(V) scarcely changed the crystal growth mode of struvite.•The inhibitory effect of As(V) on struvite crystallization is dependent of supersaturation, pH and strength.