Geofabric used for ecological restoration

Abstract

The invention discloses a geofabric used for ecological restoration, and belongs to the field of textile geosynthetics used for industry. The geofabric is formed by a three-layer structure in a composite mode; the three-layer structure comprises an acupuncturing chopped fiber non-woven geofabric layer of 200 grams, a modified montmorillonite mineral powder layer, and a continuous fiber acupuncturing non-woven geofabric layer from top to bottom; and the three layers are connected together by acupuncturing technology in the composite mode. The geofabric is capable of absorbing heavy metals effectively, and have strong absorbability on heavy metals and low-molecule organic compounds. The content of formed complexes is extremely low in water solution. The geofabric is capable of effectively removing heavy metals and other toxic matters in surface water sources or air floating objects, further reducing soil and water pollution caused by heavy metals, and realizing water-saving and energy-saving, sustained release and environmental protection, prevention of water and soil loss via reinforcement, and the like. The geofabric can be used in projects such as farm field soil heavy metal treatment, garbage landfills and sewage processing plants. The geofabric is characterized in convenient construction, low cost, and the like, and is capable of solving problems of existing heavy metal processing that technical requirement is strict, and cost is high.

Description

technical field [0001] The invention relates to an industrial textile geosynthetic material product, in particular to an ecological restoration geotextile. Background technique [0002] In recent years, with the rapid development of my country's industrialization, the earth has been continuously damaged by various heavy metal pollution. Frequent outbreaks of pollution accidents have caused heavy losses, not only increasing the cost of environmental protection and treatment, but also greatly increasing the cost of social stability, and the cost of soil pollution restoration is sky-high. Existing heavy metal treatment technologies have relatively stringent requirements. They are generally liquid, and have strict requirements on the pH value of the treatment object (if the pH value changes, the precipitated heavy metal particles may be re-dissolved), such as the production wastewater of heavy metal processing enterprises. The concentration reaches a certain level (the minimum ...

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Problems solved by technology

Frequent outbreaks of pollution accidents have caused heavy losses, not only increasing the cost of environmental protection and treatment, but also greatly increasing the cost of social stability, and the cost of soil pollution restoration is sky-high

Existing heavy metal treatment technologies have relatively stringent requirements. They are generally liquid, and have strict requirements on the pH value of the treatment object (if the pH value changes, the precipitated heavy metal particles may be re-dissolved), such as the production wastewater of heavy metal processing enterprises. The concentration reaches a certain level (the minimum concentration after treatment is 1mg / L); another reason why it is difficult to popularize is that most of the heavy metal ion removers use chemically synthesized items, which bring in Large amounts of organic carcinogens

The two technologies of "chemical leaching-chemical immobilization-biomass modification coupling" and "chemical leaching-soil improvement" both need to crush the soil layer of about 40 cm and mix it with chemicals, and then wash it with water. , to convert heavy metals into water and then process them. Although this method is effective, the cost of treatment is very high

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