Multi-channel connected well group pumping and irrigation circulating water treatment method for remediation of polluted water and soil
A treatment method and a technology for connecting wells, which are applied in the treatment of polluted groundwater/leachate, water/sewage treatment, and restoration of polluted soil, etc., which can solve the problems of low treatment efficiency, difficult to guarantee effect, and inadequate injection of chemicals. , to achieve the effect of ensuring continuity and saving workload
Active Publication Date: 2019-08-02
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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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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[0019] Example: such as figure 1 , 2 , 3, the present embodiment specifically relates to a multi-channel connected well group pumping and irrigation circulating water treatment method for remediation of contaminated water and soil. The treatment method includes the following steps:
[0020] (1) Carry out a preliminary survey on the polluted site, and divide the key polluted areas according to the survey data, such as figure 1 As shown, a circle of water barrier 11 is set on the periphery of the key polluted area to isolate it separately for repairing, and the water barrier 11 goes deep into the depth of the water barrier in the soil;
[0021] (2) if figure 1 , 2 As shown, in the area delineated by the water barrier 11, the rows of recharge units and the rows of drainage units are arranged alternately and misplaced, that is, the rows of recharge units are arranged in odd rows, and the rows of drainage units are arranged in even rows to cover all contaminated sites;
[0022...
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The invention discloses a multipath communicated well group pumping-recharging circulating water treatment method for polluted water-soil restoration. The treatment method includes the steps of: within the scope of a polluted site to be restored, laying recharging unit rows and drainage unit rows alternately in a staggered manner in order, wherein each recharging unit row is composed of a horizontal recharging branch pipe and several drug injection well pipes connected to the recharging branch pipe, and each drainage unit row is composed of a horizontal water catchment branch pipe and several well point pipes connected to the water catchment branch pipe; then communicating the recharging unit rows with a recharging device, and communicating the drainage unit rows with a water collection device; starting the recharging device and the water collection device respectively to conduct drug injection recharging and water pumping and drainage on the to-be-restored polluted site. The treatment method provided by the invention has high restoration efficiency, and realizes refine operation management on different treatment unit rows or single well point pipe according to different effluent water qualities.
Description
technical field [0001] The invention belongs to the technical field of remediation of polluted water and soil, and in particular relates to a method for treating circulating water for pumping and irrigation of multi-channel connected well groups 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 ground...
Claims
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IPC IPC(8): C02F1/00B09C1/08C02F103/06
CPCB09C1/08C02F1/00C02F2103/06
Inventor 李韬宣霖康王蓉陈展沈婷婷沈超冯凯李梅
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST