A dual-channel layered injection device for in-situ remediation of contaminated sites

Abstract

The invention discloses a double-channel layered injection device for in-situ restoration of polluted sites, which comprises an outer pipe (2), a middle pipe (3) and an inner pipe (4), which are sequentially sleeved from outside to inside, and the outer pipe ( 2) At least one pair of outer nozzles is provided on the top, and the pair of outer nozzles contains a first outer tube nozzle (10) and a second outer tube nozzle (15) arranged up and down, and the lower part of the outer tube (2) is sleeved with Packer. The dual-channel layered injection device for in-situ remediation of polluted sites is equipped with dual channels in the outer tube, which can simultaneously inject chemicals and air into the pollution source, so that the agents can be dispersed more evenly, the diffusion radius is larger, and the air flow inside the soil can be increased. Provide better aerobic environment for microorganisms. By lifting the packer installed in the outer pipe, the layered injection of the agent is realized, thereby effectively controlling the injection amount of the agent and improving the repair efficiency.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, in particular to a dual-channel layered injection device for in-situ restoration of polluted sites. Background technique [0002] With the rapid development of my country's economy and the massive consumption of resources and energy, environmental problems have become increasingly prominent. In particular, a large number of recent reports on soil and groundwater pollution have aroused great concern from the society. China's soil pollution has already affected the sustainable use of soil resources Pollution types include petroleum, polycyclic aromatic hydrocarbons, pesticides, organic chlorine, etc. Soil pollution not only destroys the ecological environment itself, but also directly or indirectly endangers human health and safety. What is more serious is that volatile and semi-volatile organic pollutants and soluble heavy metals will migrate from unsaturated areas to deep saturate...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned limitation problems existing in the use of existing injection devices, the present invention provides a dual-channel layered injection device for in-situ remediation of contaminated sites. The injection device is equipped with dual channels in the outer tube, which can inject medicine and air into the pollution source at the same time, so that the medicine can be dispersed more evenly, the diffusion radius is larger, and the air flow inside the soil can be increased to provide a better aerobic environment for microorganisms

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