Soil conditioner for acidified tailing ponds

Abstract

The invention discloses a soil conditioner for acidified tailings ponds, which is prepared by mixing the following raw materials in percentage by mass: 20 to 40 percent of alkaline conditioner, 50 to 70 percent of organic fertilizer, 2 to 10 percent of attapulgite, 2 to 10 percent of carbon aerogel and 2 to 10 percent of microbial strain. The alkaline conditioner, the organic fertilizer, the attapulgite, the carbon aerogel and the microbial strains in the raw materials have a synergistic effect, acidification of the tailing pond is continuously reduced, the pH value of acidified tailing pond soil is increased, heavy metal is solidified and stabilized, water and fertilizer are preserved, the content of effective heavy metal in tailings is reduced, organic matter of the tailing pond soil is increased, the fertility is effectively improved, and the ecological restoration of the tailing pond is facilitated. Meanwhile, the soil conditioner can also be applied to soil improvement and ecological restoration engineering of other acidified mineral waste land.

Description

technical field [0001] The invention relates to the technical field of ecological restoration of tailings ponds, more specifically, relates to a soil conditioner for ecological restoration of acidified tailings ponds, which can also be popularized and applied in ecological restoration projects of acidified soil dumps and acidified abandoned stockpiles . Background technique [0002] Tailings pool refers to the place where dams are built to intercept valley mouths or enclosures, and are used to stockpile metal or non-metal mines for ore sorting and then discharge tailings or other industrial waste. However, the soil of tailings ponds is often acidified, heavy metal ions exceed the standard, and there is no nitrogen, phosphorus, potassium and other nutrients required for normal plant growth, so vegetation often cannot grow on the ground of tailings ponds. [0003] Most of the tailings ponds in my country adopt the traditional covering soil before ecological restoration, but t...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for acidifying tailings ponds in view of the problems existing in the prior art, such as the need to consume a large amount of high-quality foreign soil, the high engineering cost, the phenomenon of acid return, the large amount of engineering, and the long repair time. Soil conditioner can effectively increase the pH value of the tailings pond soil, improve its fertility, and reduce the effective state of heavy metals in the tailings pond. It can be used in the ecological restoration project of the acidified tailings pond without covering soil