The anoxic biofilm reactor has a short start-up period by employing the method of aerobic precoating of the b-iomedium combined with rapid draw-off sludge.During this period,the sludge is recycled.

• 缺氧生物膜反应器采用好氧预挂膜与快速排泥挂膜方法，在挂膜期间加强污泥回流，缩短反应器的启动时间。