Air striping method adapts to high concentration formaldehyde wastewater and if the formaldehyde concentration is lower than 2000 mg/L, it will spend longer time and is not economical.

• 吹脱法除甲醛适合于高浓度甲醛废水，2000mg/L以下的甲醛废水的吹脱费时过长，也不经济。