Device and technological method for repairing organic contaminated soil and underground water

A technology of organic pollution and process method, applied in the field of remediation of organic polluted soil, can solve the problems of high treatment cost, complicated process, secondary pollution, etc., and achieve the effect of simple device design, avoiding secondary pollution, and reducing treatment cost

Active Publication Date: 2015-11-11
CHENGDU EN SHAIN TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that the process is complex, the device is cumbersome, the treatment is easy to form secondary pollution, and the treatment cost is high, and a kind of device is simple and the process method is easy to operate. Device and process for remediating organically polluted soil and groundwater

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  • Device and technological method for repairing organic contaminated soil and underground water

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Effect test

Embodiment 1

[0025] Embodiment 1: This embodiment is to remediate the soil polluted by o-(p) dinitrochlorobenzene with a concentration of 2000ppm, the groundwater depth is 2m, and the contaminated area covers an area of ​​1000m 2 , Drill 50 holes in the site, install an ultrasonic transmitter, the depth of the transmitter reaches 5m, turn on the ultrasonic frequency of 30kHz, and take out the ultrasonic transmitter after 0.5 months of operation. Install pumping pipelines in 25 evenly distributed boreholes, connect to surface self-priming pumps, and carry out microbial enhanced reaction, and install drainage pipelines in the other 25 boreholes. The domesticated Acinetobacter high-efficiency aerobic degrading bacteria attached to the filler is installed in the microbe-enhanced reactor. Add nutrient solution to ensure the C:N:P=(100~120):(4~8):(0.5~2) of the total nutrients in the container. At the same time, adjust the internal pH to 6~7.5 and control the temperature at 10 At ~30°C, the aer...

Embodiment 2

[0026]Embodiment 2: This embodiment is to remediate the soil polluted by HCHs (HCHs) with a concentration of 2500ppm, the groundwater depth is 4m, and the contaminated area covers an area of ​​500m 2 . Drill 30 holes in the site, install an ultrasonic transmitter, turn on the ultrasonic frequency of 50kHz, and take out the ultrasonic transmitter after 2 months of operation. Install pumping pipelines in 15 evenly distributed boreholes, connect to surface self-priming pumps, and carry out microbial enhanced reaction, and install drainage pipelines in the other 15 boreholes. The domesticated Pseudomonassp efficient aerobic degrading bacteria attached to the filler is installed in the microbe enhanced reactor. Add nutrient solution to ensure the C:N:P=(100~120):(4~8):(0.5~2) of the total nutrients in the container. At the same time, adjust the internal pH to 6~7.5 and control the temperature at 20 At ~35°C, the aerator is turned on and ventilated into the device at 200L / min. Gr...

Embodiment 3

[0027] Embodiment 3: This embodiment is to remediate the soil polluted by DDTs (DDTs) with a concentration of 1000ppm, the groundwater depth is 1m, and the contaminated area covers an area of ​​200m 2 . Drill 10 holes in the site and install ultrasonic transmitters with a depth of 3m. Turn on the ultrasonic frequency of 35kHz, and take out the ultrasonic transmitter after 1.5 months of operation. Install pumping pipelines in 25 evenly distributed boreholes, connect to surface self-priming pumps, and carry out microbial enhanced reaction, and install drainage pipelines in the other 25 boreholes. The domesticated Enterobactersp high-efficiency aerobic degrading bacteria attached to the filler is installed in the microbe-enhanced reactor. Add nutrient solution to ensure the C:N:P=(100~120):(4~8):(0.5~2) of the total nutrients in the container. At the same time, adjust the internal pH to 6~7.5 and control the temperature at 20 At ~35°C, the aerator is turned on and the air is v...

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Abstract

The invention relates to a device and technological method for repairing organic contaminated soil and underground water. The device comprises an ultrasonic transmitting device and a microorganism reactor. The ultrasonic transmitting device is arranged in a drilled hole in the organic contaminated soil to be repaired, and the depth of the drilled hole ranges from 6.5 m to 7.0 m. After ultrasonic pretreatment is finished, the ultrasonic transmitting device is taken out, and a water inlet pipeline and a water outlet pipeline of the microorganism reactor are arranged in the drilled hole. The underground water of the organic contaminated soil is pumped into the microorganism reactor by a self-priming pump to be treated. After treatment is finished, the underground water is recharged underground. The device is simple in design, compact in connection and convenient to use. The combined technology of adopting ultrasonic pretreatment and a microorganism reinforcement reaction for carrying out in-situ remediation on the degradation-resistant macromolecule organic contaminated soil and the underground water is adopted; treatment cost is greatly lowered; the soil structure is not damaged; the normal function of the oil is not influenced; secondary contamination to the soil is avoided; and environment protection is achieved.

Description

technical field [0001] The invention relates to a device and a process method for remediating organic polluted soil and groundwater, and belongs to the technical field of organic polluted soil remediation. Background technique [0002] At present, in the manufacturing industry, such as chemical industry, coking, pharmaceuticals, pigment synthesis, wood preservatives, plastic manufacturing, herbicide and insecticide manufacturing, mining industry, etc., a large amount of organic pollutants containing toxic chemicals will be produced. These organic pollution also seriously pollute the soil. With the rapid development of industrialization and urbanization in our country, a large number of industrial polluted sites have been left behind by the closure and relocation of polluting enterprises. In addition, the policies of "retreating from the second to the third" and "retreating from the city to the park" implemented by the state have led to a large number of abandoned sites in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10C02F9/14C02F103/06
Inventor 李建洲雷继雨石磊
Owner CHENGDU EN SHAIN TECH INC
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