Development of Sand Fixing Agents in Papermaking Waste Liquor

In early January 2004, an environment-friendly desert control new technology material was developed at Nanjing Forestry University and successfully applied in experimental applications in Ningxia and other places, becoming a breakthrough in solving desertification problems.
This type of “degradable sand-fixing material for the preparation of vegetation with industrial lignin” can effectively combine chemical and sand fixation with vegetation and sand fixation, which can greatly speed up the speed of sand control, improve the effect of desert control, and at the same time help solve the problem of paper industry pollution in China. .
The newly developed sand-fixing agent is prepared from the waste liquid from pulping. The use of sand-fixing lignin products can not only reduce the cost of sand stabilization, but also effectively solve the problem of waste liquid pollution in small and medium grass pulp mills. After the application of the sand-fixing agent, sand crusts of 0.5 cm to 1 cm thick can be formed very quickly. When there is natural precipitation, these sand crusts gradually infiltrate and thicken, and can be maintained for a long time. The maximum thickness can be achieved. 3 cm to 5 cm. Sand crust can effectively prevent wind erosion, at the same time, it can absorb moisture and reduce the evaporation of soil moisture, and finally achieve the purpose of fixing and greening sand dunes and improving the ecological environment.