APPARATUS FOR TREATMENT OF AMMONIACAL WASTE LIQUID

摘要

The present invention provides an apparatus for treatment of an ammoniacal waste liquid comprising a sequence, a first distillation column for steam-stripping of free ammonia from said liquid, a reaction tank for effecting decomposition reaction of residual fixed ammonia in said liquid by adding a calcium series alkali to yield a product containing free ammonia and a calcium salt, a solid-liquid separator for separation of the calcium salt from said liquid to yield a separated liquid, and a second distillation column for steam-stripping of the free ammonia from the separated liquid.