关键词: 水分蒸发抑制剂, 复配, 单分子膜, 水资源保护

Abstract:

The northwest region of China is dry, rainless and the evaporation is heavy, so the water resources of reservoirs lost a lot by evaporation. To study the water resources protection measures in arid region, a new heterogeneous system of water evaporation inhibitor was prepared by ultrasonic dispersion technology with hexadecanol and ethanol as molecular film substrate. The influence of proportion of the two alcohol, ultrasonic treatment time and power, the inhibitor adding amount on the effects were studied. The results proved that the evaporation inhibiting effect is the best under the conditions of the hexadecanol and ethanol ratio of 1:6, ultrasonic treatment power of 6 kHz, treatment time of 25 min, intermittent time of 10 s for 30 s treatment, and the inhibition rate for 24 h can reach 45.3%; the dissolved oxygen in water is nearly the same as that in natural conditions and will not influence the growth of aquatic plants. The inhibitor is of great significance for reducing the water resources loss in arid regions, which can bring huge economic and social benefits.

Key words: water evaporation inhibitor, compound, monofilm, water resources protection