Semi-embedded ring type remediation method for heavy metal contaminated soil

Abstract

The invention discloses a semi-embedded ring type remediation method for heavy metal contaminated soil, and belongs to the field of soil remediation. According to the method, a semi-embedded notch ring is arranged so that the effect that a water-absorbing loosening adsorbent can be supplemented without digging out the embedded part can be achieved, the replacement difficulty of the water-absorbingloosening adsorbent is reduced, and the efficiency of soil remediation is improved; a water-soluble control ball is arranged in the water-absorbing loosening adsorbent, and therefore after the adsorbent adsorbs heavy metal ions, the adsorbent adsorbs a part of water in soil under the action of a transport channel correspondingly, then the water-soluble control ball is dissolved and release air the heavy metal ion adsorbent can be loosened and the compactness of the heavy metal ion adsorbent can be reduced in an outward overflowing process, so that the heavy metal ion adsorbent is effectivelyprevented from caking, the recycling and replacing difficulty of the heavy metal ion adsorbent adsorbing heavy metal ions is reduced, oxygen can be supplied to microorganisms in soil, the activity ofthe heavy metal ion adsorbent is improved, and the remediation of the soil is accelerated.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a semi-embedded ring type remediation method for heavy metal polluted soil. Background technique [0002] Soil is one of the basic elements constituting the ecosystem, and it is constantly exchanging material and energy with the atmosphere, water and biological environment. The "National Soil Pollution Survey Bulletin" jointly issued by the Ministry of Environmental Protection and the Ministry of Land and Resources in 2014 shows that the overall situation of my country's soil environment is not optimistic. Some areas have serious soil pollution, the quality of cultivated land soil environment is worrying, and the soil environment of industrial and mining wasteland is problematic. protrude. Once the soil environment is polluted, it will indirectly cause potential harm to human health through "soil-plant (water body)-human body". [0003] The acceleration of urbanization and indust...

AI Technical Summary

Problems solved by technology

[0003] The acceleration of urbanization and industrialization has brought rapid economic development, but it has also caused a lot of soil pollution

Due to the disadvantages of traditional soil pollution control and restoration methods, such as high cost, long cycle, disturbance of the environment and secondary pollution, etc.

[0004] In the prior art, when treating soil polluted by heavy metals, embedded parts are usually buried in the soil, but the existing embedded parts for soil remediation are difficult to recycle after absorbing heavy metal ions in the soil. It is necessary to take out the embedded parts from the soil, replace the adsorbent and re-embed them in the soil. The operation is cumbersome and affects the efficiency of soil restoration.

Images