GPS positioning based contaminated soil restoration system and method

Abstract

The invention discloses a GPS automatic positioning based soil heavy metal restoration system. The system comprises a walking mechanism. A tunneling device, a crushing device, a stirring device, a liquid infusion device, a main control system and a positioning and navigation system are sequentially arranged on the walking mechanism. Automatic sampling and online detecting on contaminated soil can be achieved, and an advancing route and a restoration prescription map are planned in advance according to the detection result; and in the advancing process, a positioning and navigation device acquires the position information of a trolley in real time, the position information is fed back into the main control system to be matched with a route map and the restoration prescription map, the motion state of the trolley, the tunneling depth and the formulation rate are automatically adjusted, and variable restoration of soil with different contamination degrees is achieved. The soil restoration system integrates soil sample collection and soil restoration, the automation degree is high, the hurt of contaminated soil to operation personnel can be reduced, and the efficiency can be improved; and the system can be applied to large-scale projects, and efficient and fast restoration of various contamination sites can be achieved.

Description

technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to an automatic remediation system and method for heavy metal-contaminated soil, in particular to an in-situ remediation trolley and method for heavy metal-contaminated soil capable of automatic positioning and variable remediation. Background technique [0002] Heavy metal pollution has become one of the most concerned global environmental pollution problems, and heavy metal pollution in my country is also very serious. The pollution of agricultural land will cause the pollution of the food produced; the environmental protection monitoring system of the Ministry of Agriculture has conducted a survey of 82.23 million mu of soil in 320 seriously polluted areas in 24 provinces and cities across the country and found that the area of ​​large-scale agricultural products exceeding the standard accounted for 20% of the farmland area in the polluted area. Among them, excessive h...

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Problems solved by technology

Existing technologies are divided into in-situ restoration and ex-situ restoration. Ex-situ restoration needs to excavate and transport the soil to other places for centralized treatment. The process is complicated, the project investment is large, and the soil structure is easily damaged, and it is easy to increase the potential for operators. Harm, not suitable for large-scale contaminated soil remediation

[0004]The method of in-situ restoration has the disadvantages of insufficient mixing of agents and soil, and the inability to penetrate deep into the soil, and the manual application mode is usually used, which is inefficient and labor-intensive Large, uncontrollable medicament dosage, uneven medicament dosage, discontinuous work, and different actual pollution conditions. It is difficult to achieve variable restoration with existing technologies, resulting in waste of medicines and poor soil restoration effect

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