The wastewater generated from 2,4-xylidine production by iron powder reduction process has been treated with a close recycle technology with steam stripping,realizing zerodischarge of the wastewater.

• 对铁粉还原法生产2，4-二甲基苯胺过程中产生的废水，采用蒸发为水蒸气后回用于汽提的全循环工艺，可实现零排放。