System and method for local ex-situ remediation of irritant peculiar smell site

Abstract

The invention discloses a system and method for local ex-situ remediation of an irritant peculiar smell site. The method comprises the following steps: pumping out underground water in the irritant peculiar smell site, and preparing a remediation agent by utilizing original underground water of the site; and adding the remediation agent in a manner of in-situ injection and stirring in order to remediate irritant peculiar smell soil and underground water. The remediation system comprises a tube well dewatering system, a water storage system, an agent dispensing system and an injecting and stirring system which are sequentially connected in the liquid flow direction; the medicine dispensing system is also connected with an agent storage system; and the restoration system further comprises aflexible isolation system and a peculiar smell monitoring and early warning system. The system and the method for local ex-situ remediation of the irritant peculiar smell site can greatly reduce the remediation water consumption, reduce the water treatment work amount and reduce the remediation cost, and can realize efficient, safe, low-cost and low-disturbance remediation of the irritant peculiarsmell site by reasonably adjusting the agent concentration and the disturbance strength to soil.

Description

technical field [0001] The invention relates to the field of odorous soil remediation, in particular to an in-situ ex-situ remediation system and method for sites with irritating odors. Background technique [0002] In the past, little attention was paid to the remediation of odorous soil. Odor-smelling soil and groundwater have gradually attracted people's attention due to their bad sensory experience, and more and more people have noticed the adverse effects of odorous soil or groundwater on land development and utilization. [0003] In the process of site transfer, sites with irritating odors will seriously affect the later development and utilization. Due to the presence of volatile or semi-volatile odor components in some sites with irritating odors, the odor components are slowly released from the soil and groundwater, which affects the surrounding residents. Long-term impact on life, or unnecessary mass complaints. In order to ensure that the site meets the requirem...

AI Technical Summary

Problems solved by technology

If the traditional ex-situ restoration is adopted, the odorous soil will be violently disturbed during excavation and transportation, and the amount of irritating odor it emits will increase, which will easily have a greater impact on the lives of residents around the site

In addition, the preparation of pharmaceuticals requires a lot of water, which is a great waste of water resources, and the large amount of water brought in during the restoration process will cause the soil moisture content of the site to rise, and even cause the site to collapse or form a soft foundation due to excessive water accumulation. , affecting later development and utilization

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