Improved aeration well for in-situ remediation of polluted underground water and remediation method

Abstract

The invention relates to an improved aeration well for in-situ remediation of polluted underground water and a remediation method. In the improved aeration well, an inner well tube is sleeved in an outer well tube; the inner well tube is fixed in the outer well tube by using an upper fixed bracket and a lower fixed bracket; an aeration head is arranged at the lower part of the inner well tube and is connected with an aeration pump through an aeration pipe; an exhaust hole is arranged at the upper part of the outer well tube and is connected with a contaminated gas monitor; an upper shock tube is arranged at the lower part of the exhaust hole at the upper part of the outer well tube; a top hole of the upper shock tube is lower than the inner well tube; a lower shock tube is arranged on the lower section of the outer well tube; a top hole of the lower shock tube is higher than the bottom end face of the inner well tube; and the bottom end face of the outer well tube is in contact with a base plate of an underground water layer. The invention has the advantage that the transverse diffusion of the pollutants is reduced by increasing the vertical flow of underwater. Compared with the traditional underground water aeration technology and extraction treatment technology, the remediation method has a simpler process, the improved aeration well can continuously operate by conventional maintenance, the remediation efficiency is improved and the remediation cost and the maintenance cost are reduced.

Description

technical field [0001] The invention relates to a treatment method for groundwater pollution, in particular to an improved aeration well for in-situ restoration of polluted groundwater and a restoration method. Background technique [0002] Groundwater pollution in my country is becoming more and more serious. Although there is certain economic strength and technical support for pollution control and treatment, due to its concealment, complexity, characteristics that are difficult to control and treatment, and time-consuming, treatment and restoration costs are huge. Groundwater The remediation of pollution is less carried out. [0003] Groundwater in-situ remediation technology can minimize the exposure of pollutants and the disturbance to the surrounding environment, so it has attracted widespread attention in recent years. The in-situ remediation techniques of groundwater mainly include: (1) In-situ physical remediation. For example: groundwater aeration technology (air ...

AI Technical Summary

Problems solved by technology

This method is a widely applicable and cost-effective remediation method, but the time required for remediation is too long, and it is not suitable for sites with high pollutant concentrations [Reference 5: Langwalt J H, Puhakka J A. On-site biological remediation of contaminated groundwater: a review[J].Environmental Pollution, 2000, 109:187-19. Document 6: Lin CW, Cheng Y W, Tsai S L.Multi-substrate biodegradation kinetics of MTBE and BTEX mixtures by Pseudomonas aeruginosa[ J]. Process Biochemistry, 2007, 42(8): 1211-1217.]

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