Latterly problems that limited extensive use of UF, such as the loss of small molecules, the passing amount and the washing of membrane, were analysed.
The major loss caused by the method of washing with sulfuric acid was avoided, and the consumptions of sulfuric acid and alkali were decreased.
避免了传统硫酸酸洗法脱硫工艺中苯损失大、硫酸和碱用量大的问题。
3
A: no washing machine operation engineering turbine fixed, may form a clean by washing the wrong location of the vehicle, thus forming a vehicle accident loss.