It is concluded that gas_and_water backwashing technique has the features of water saving, energy saving, thorough backwashing and easy to control automatically, and its wash effect is better than traditional backwashing technique.

• 结论认为 :气水反冲洗技术具有节水、节能、反冲洗彻底及自动控制易于实现等特点 ,冲洗效果明显优于传统的水反冲洗技术。