CN-117125796-B - Dynamic groundwater circulation chemical reduction repair system

CN117125796BCN 117125796 BCN117125796 BCN 117125796BCN-117125796-B

Abstract

The invention discloses a dynamic groundwater circulation chemical reduction restoration system which comprises pumping wells, injection wells, a sewage treatment station, a reservoir and a scum recovery tank, wherein the pumping wells are connected with the sewage treatment station through pumping pipes, the upper ends of the sewage treatment station are communicated with a heavy metal sewage treatment box through treatment pipes, the sewage treatment station is connected with one side end of the reservoir through the sewage pipes, the upper end of the other side of the reservoir is provided with scum overflow grooves, the scum overflow grooves are connected with the scum recovery tank through scum pipes, the upper ends in the scum recovery tank are provided with filter cloth, and the lower ends of the scum recovery tank are connected with the injection wells through injection pipes. The dynamic groundwater circulation chemical reduction restoration system provided by the invention can effectively regulate and control the heavy metal capturing agent added in the sewage treatment plant and the heavy metal capturing agent added in the reservoir in real time, thereby avoiding the condition of excessive addition of the heavy metal capturing agent, saving resources and reducing cost.

Inventors

YANG GUANG
Niu Haobo
ZHENG YANHONG
LI LONGYU
KANG YANG

Assignees

湖南中森环境科技有限公司

Dates

Publication Date: 20260508
Application Date: 20230828

Claims (3)

1. A dynamic groundwater circulation chemical reduction restoration system comprises a pumping well (1), an injection well (2), a sewage treatment station (3), a reservoir (4) and a scum recovery tank (5), wherein a plurality of pumping wells (1) are connected with the sewage treatment station (3) through pumping pipes, and the dynamic groundwater circulation chemical reduction restoration system is characterized in that the upper end of the sewage treatment station (3) is communicated with a heavy metal sewage treatment tank (7) through a treatment pipe (6), the sewage treatment station (3) is connected with one side end of the reservoir (4) through a sewage pipe, a scum overflow groove (8) is formed in the upper end of the other side of the reservoir (4), the scum overflow groove (8) is connected with the scum recovery tank (5) through a scum pipe (9), a filter cloth (10) is arranged at the upper end of the scum recovery tank (5), and the lower end of the scum recovery tank (5) is connected with a plurality of injection wells (2) through injection pipes. The water quality heavy metal detector comprises a water quality heavy metal detector, a controller, a water quality heavy metal detector, a ventilation pipe (15), a first control valve and a driving pump (18) which are arranged on the ventilation pipe (15) in a communicating manner, a second control valve which is arranged on the deslagging pipe (9), a flow regulating valve (19) which is arranged on the processing pipe (6), a plurality of sampling holes (21) which are sequentially arranged on the front side wall of the water quality heavy metal detector from bottom to top, and the water quality heavy metal detector, wherein the gas outlet holes (141) are formed in the end faces of the two sides of the gas disk (14), the top end is provided with the air inlet holes, the ventilation pipe (15) is connected with the air inlet pipe (16), the ventilation pipe (15) and the liquid inlet pipe (15) is provided with the first control valve and the driving pump (18) which are respectively arranged on the ventilation pipe (15) and the liquid inlet pipe (16), and the water quality heavy metal detector is provided with the flow regulating valve (19) which is arranged on the processing pipe (6); A plurality of shaft connecting blocks (12) are transversely arranged on the rotating shaft (11), and a group of stirring pore plates (13) are arranged on each shaft connecting block (12); Each group of stirring pore plates (13) consists of an upper stirring pore plate and a lower stirring pore plate with a fan-shaped longitudinal section, wherein the upper stirring pore plate and the lower stirring pore plate form a V shape, and a containing space is reserved between the two groups of stirring pore plates; A cyclone (20) is fixedly arranged on the inner top wall and the inner bottom wall of the reservoir (4) together, the cyclone (20) is located in the accommodating space, the cyclone (20) is formed by connecting two conical pore plates, the outer diameters of the two conical pore plates are gradually increased towards the outer direction, and a certain interval is reserved between the two conical pore plates and the rotating shaft (11) and between the two conical pore plates and the stirring space.
2. The dynamic groundwater circulation chemical reduction restoration system according to claim 1, wherein a plurality of pumping wells (1) extend into the area of the underground aquifer in the direction of the flow of the pollution plume, and a plurality of injection wells (2) extend into the areas of the underground aquifer in the directions of the two outer sides of the pollution plume.
3. The dynamic groundwater circulation chemical reduction restoration system according to claim 1, wherein the heavy metal wastewater treatment tank (7) is filled with heavy metal capturing agents, the liquid inlet pipe (16) is connected with a liquid inlet tank, and the liquid inlet tank is filled with the heavy metal capturing agents.

Description

Dynamic groundwater circulation chemical reduction repair system Technical Field The invention relates to the technical field of mining area treatment, in particular to a dynamic groundwater circulation chemical reduction repair system. Background Key designs for in situ dynamic subsurface water circulation chemical-biological reduction techniques include hydrogeology, groundwater chemistry and contaminant characteristics, which help determine repair implementation process parameters including system layout, type of injection points, injection frequency, solution concentration, and maintenance and monitoring of the process. In the chemical-biological reduction restoration process of the dynamic groundwater circulation, the dynamic groundwater circulation is completed through pumping wells and injection wells, and the operation effect is completed through sampling analysis in the system and monitoring wells. The polluted groundwater is pumped out through a pumping well and treated in a sewage treatment plant on site, and the treated water is discharged after reaching standards, or the groundwater is injected back into a pilot plant area through an injection well to promote dynamic circulation of the groundwater. In order to achieve the aim of promoting in-situ chemical bioremediation, an organic carbon source or ferrous sulfate solution is added into the injection water according to the requirement. The conventional common monitoring well monitors the concentration change of pollutants in underground water in the system, judges the influence range and the restoration effect of the pilot-scale dynamic underground water circulation chemical-biological reduction system, and provides a basis for the later-stage integral treatment and restoration work. However, the monitoring well only plays a role in monitoring, and the monitoring result only can provide a basis for the later-stage overall treatment and repair work, but cannot play a role in adjusting the heavy metal remover added into the sewage treatment plant according to the monitoring result. When the dynamic groundwater is pumped out to the sewage treatment plant for heavy metal removal, because the contents of heavy metal ions contained in the dynamic groundwater at each position of the underground are different, if the heavy metal remover added in the sewage treatment plant needs to achieve the effect of continuously and basically completely removing the heavy metal ions in the dynamic groundwater, the situation that the adding amount of the heavy metal remover is excessive at certain moment and the heavy metal remover is excessively wasted is likely to occur. Disclosure of Invention In view of the above, the invention provides a dynamic groundwater circulation chemical reduction repair system. In order to achieve the above purpose, the present invention adopts the following technical scheme: A dynamic groundwater circulation chemical reduction restoration system comprises pumping wells, injection wells, a sewage treatment station, a reservoir and a scum recovery tank, wherein a plurality of pumping wells are connected with the sewage treatment station through pumping pipes, the upper end of the sewage treatment station is communicated with a heavy metal sewage treatment tank through a treatment pipe, the sewage treatment station is connected with one side end of the reservoir through a sewage pipe, the upper end of the other side of the reservoir is provided with a scum overflow groove, the scum overflow groove is connected with the scum recovery tank through a scum pipe, the upper end in the scum recovery tank is provided with filter cloth, and the lower end of the scum recovery tank is connected with a plurality of injection wells through injection pipes; A rotating shaft is arranged in the reservoir in a transverse rotation mode, and a plurality of groups of stirring pore plates are arranged on the rotating shaft at certain intervals; the device comprises a plurality of groups of stirring pore plates, wherein accommodating distances are reserved among the groups of stirring pore plates, an air disc with a central hole is arranged in each accommodating distance, a plurality of air outlet holes are formed in the end faces of two sides of the air disc, a liquid outlet hole is formed in the bottom end of the air disc, an air inlet hole is formed in the top end of the air disc, all the air inlet holes are connected with an air pipe, liquid inlet pipes are communicated with the air pipe, a first control valve and a driving pump are respectively arranged on the air pipe and the liquid inlet pipes, a second control valve is arranged on a deslagging pipe, a flow regulating valve is arranged on the treatment pipe, a plurality of sampling pipes are sequentially communicated from bottom to top on the front side wall of a reservoir, the plurality of sampling pipes are respectively connected with a water quality heavy metal detector, the output end of the water qu