Preparation process of wash-resistant geosynthetics for agricultural and forestry soil remediation

Abstract

The invention relates to a preparation process of wash-resistant geosynthetics for agricultural and forestry soil restoration and management, which comprises the steps of passing a bright polyester base slice through a two-stage solid-phase thickening process of an SSP system to obtain a high-viscosity polyester slice; a high-viscosity polyester slice Extruded and melted by a screw extruder, the melt is transported to each spinning position through a melt pipeline; filaments are sprayed out through the micro-holes of the spinneret in the spinning assembly; the primary fibers are cooled and formed, oiled and bundled; First-level drawing and setting, in which the activated oil mixed with high-efficiency composite repair agent is oiled before the second-level drawing; finally, it is wound and shaped by a winding machine to obtain the product. The present invention adopts the processing technology of activating oil agent oiling, and on the basis of polyester industrial yarn spinning processing, produces high-performance polyester industrial yarn that has adsorption and fixation effect on heavy metal ions, and has catalytic degradation effect on pesticide residues. Polyester industrial yarn is woven into geosynthetics, which is used for restoration and treatment of agricultural and forestry soils that exceed heavy metals and pesticides.

Description

technical field [0001] The invention relates to a preparation process of a geosynthetic material, in particular to a preparation process of a geosynthetic material for soil restoration and control. Background technique [0002] With the continuous acceleration of the industrialization process, the irrational mining of mineral resources and their smelting discharge, long-term sewage irrigation and sludge application to the soil, atmospheric deposition caused by human activities, and the application of chemical fertilizers and pesticides have caused serious soil pollution. . [0003] At present, there are mainly physical restoration, chemical restoration and biological restoration methods in the restoration of agricultural, forestry and pasture land. (1) The physical remediation method is mainly applied to the remediation technology of inorganic pollutants in polluted soil. According to the physical characteristics of the soil medium and pollutants, different methods are use...

AI Technical Summary

Problems solved by technology

However, bioremediation technology takes a long time, and the crops are highly targeted, so it is difficult to carry out comprehensive restoration of toxic and harmful agricultural and forestry soils and the purpose of removing harmful substances