It is advisable that the limited value of NH_3-N discharge in wastewater generated from current saponin process techniques should be 120 mg/L, and its total limited value should be 60 kg/t product.

• 建议对皂素工业现行生产工艺废水中氨氮排放质量浓度限值规定为120 mg/L；总量限值为60 kg/t产品.