Multipath communicated pumping-recharging integrated treatment method for polluted water-soil in-situ remediation

Abstract

The invention discloses a multipath communicated pumping-recharging integrated treatment method for polluted water-soil in-situ remediation. The treatment method is characterized by comprising the steps of: within the scope of a polluted site, laying several rows of well-point pipes, one ends of the well-point pipes within one row are communicated with a transverse branch pipe, the input end of the transverse branch pipe is equipped with a recharging valve, and the output end is equipped with a water outlet valve; the input ends of all transverse branch pipes are communicated with a recharging device, and the input ends are communicated with a water collecting device; while water pumping is carried out, the recharging valves are closed and the water outlet valves are opened, the water collecting device is started to water pumping and draining on the polluted water-soil through the well-point pipes; while recharging is carried out, the recharging valves are opened and the water outlet valves are closed, the recharging device is started to recharge the polluted water-soil with clear water or medicaments through the well-point pipes. The treatment method provided by the invention integrates water pumping and recharging, has high treatment efficiency, and can realize fine management.

Description

technical field [0001] The invention belongs to the technical field of remediation of polluted water and soil, and in particular relates to a multi-channel connected pumping and irrigation integrated treatment method for in-situ remediation of polluted water and soil. Background technique [0002] With the advent of my country's economic transformation period, most cities have begun to transfer land, and the original industrial enterprises have moved out, leaving a large number of brownfields polluted to varying degrees, which has adverse effects on the secondary development of land and brought huge health and safety. Ecological environmental risks will also have a certain impact on the safety of corresponding buildings and other infrastructure. Therefore, it is becoming more and more important to carry out the prevention, control and management of soil and groundwater. [0003] At present, the restoration and treatment methods for soil and groundwater are mainly divided into...

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Problems solved by technology

According to the disposal method, it can be divided into in-situ remediation and ex-situ remediation, but most of them treat soil or groundwater separately. However, the application of traditional groundwater pumping treatment technology in the integrated remediation of polluted water and soil has attracted more and more attention and has gradually evolved. It is one-way extraction, one-way injection, and various technologies that combine extraction and chemical injection; however, this technology still has ground subsidence caused by extraction, land consolidation, inadequate chemical injection, low processing efficiency, and a large amount of labor. The effect is difficult to guarantee And other issues

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