An auxiliary medium was made by mixing shredded waste tyres,ethylene vinyl acetate(EVA) copolymer and zeolite in certain proportion and added into aerobic zone of A2/O process to investigate the influence on nitrogen removal efficiency.

• 将废轮胎切碎后与乙烯-乙酸乙烯酯共聚物(EVA)及沸石按一定比例混合制成一种辅助媒介,并添加至A2/O工艺的好氧段,考察了对脱氮效果的影响。