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Petroleum hydrocarbon polluted soil and underwater remediation system and technology

A technology for polluted soil and remediation systems, applied in groundwater remediation systems and processes, and in the field of petroleum hydrocarbon-contaminated soils, it can solve problems such as inability to treat deep areas, backward research and development of pollution remediation technologies, and inability to achieve soil oil content, and achieve cost Low, simple process effect

Active Publication Date: 2019-02-15
大庆三宝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current domestic site remediation, most of them only focus on polluted soil, using heat treatment technology and solvent extraction technology mainly based on ectopic remediation, which cannot treat deep areas and "avoid" polluting groundwater. The reason is that the current pollution remediation technology R&D is backward, far from meeting the needs of contaminated groundwater remediation, and the complexity of the underground environment makes traditional remediation technologies unable to achieve efficient removal of pollutants
[0004] Many air disturbance remediation technologies have been adopted in foreign countries, and the initial effect can obviously deal with most soil and groundwater pollutants. However, pollutants that exist in soil pores and are extremely soluble in water are difficult to remove through aeration and pumping, and cannot reach the national level. Specified minimum oil content in soil

Method used

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  • Petroleum hydrocarbon polluted soil and underwater remediation system and technology
  • Petroleum hydrocarbon polluted soil and underwater remediation system and technology
  • Petroleum hydrocarbon polluted soil and underwater remediation system and technology

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Indoor experiments: such as figure 1 As shown, the system consists of a simulated reaction column with a height of 50 cm. One side of the reaction column is equipped with an exhaust gas collection device activated carbon tube 01, a flow meter 02, a pollutant inlet 03, and a Martens bottle 04. Water sample port, water sample port 05, water sample port 06, water sample port 07, water sample port 08, the column is filled with fine sand (0.6 ~ 0.8mm), after the water is wetted, it passes through the Martens bottle 04 The liquid level control simulates the thickness of the groundwater layer to be 300mm, and toluene is added to the groundwater to control the initial concentration to 30000mg / kg. Inject air through the air pump, the air pump is connected before the flowmeter, the air pump is a general air pump in the market (it only needs to reach the flow rate required by the experiment), control the gas flow rate to 0.05m3 / h, take samples for 10h to measure the groundwater, a...

Embodiment 2

[0029] Field experiment: In a polluted site, the concentration of petroleum hydrocarbons in groundwater and soil is 20,000mg / kg, and a set of aeration-injection-extraction system is set up for in-situ repair.

[0030] a. Drill injection wells in polluted areas: Drill the central position of the polluted plume with drilling equipment. After the drilling is completed, inject the injection head 17 and the injection pipe 16 into the bottom of the well. The injection pipe 16 is used to connect the injection head 17 and the surfactant tank 4, wherein The height of the injection head is 0.2m to ensure that the surfactant reaches the best diffusion range. From the range of 0.4m above the injection bottom point, use quartz sand to return to the well, and the above quartz sand is sealed with concrete. Surfactant tank and gas storage tank 2 1. The air compressor 1 is sequentially connected through the injection pipe; A gas flow meter 3 is installed on the pipeline between the gas storage ...

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PUM

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Abstract

The invention provides a petroleum hydrocarbon polluted soil and underwater remediation system and technology. The system comprises an aeration facility, a pumping facility, a pouring facility and anexhaust gas treatment device, wherein an aeration well, a pumping well and a pouring well are optimally arranged; the gas injection pressure is 0.2-0.3MPa; the gas injection flow rate is 4.2m<3> / h; the intermediate operation is performed under 12-h-on to 12-h-off; the pumping pressure is about 0.103-0.123MPa; the pumping flow rate is 3-8m<3> / h; 1000ml surfactant (rhamnose) is fed, and the surfactant is fed at every 24h; the system continuously runs for 15da; and after remediation, the petroleum hydrocarbon removing rate of a field is up to 99.6%; after pumping, the gas is adsorbed through theexhaust gas treatment device. The remediation technology is simple in process, and low in cost; the normal production of an enterprise is not influenced; in addition, secondary pollution is avoided inall the remediation processes.

Description

Technical field: [0001] The invention belongs to the technical field of environmental protection, and relates to a restoration system and process for petroleum hydrocarbon-contaminated soil and groundwater. Background technique: [0002] During the drilling process of oil exploration and development, oil testing, well cleaning, oil well overhaul, pipeline perforation, blowout, oil volatilization and leakage in the refining process of petrochemical enterprises, accident discharge, etc., will cause soil oil pollution, and these pollutants will even migrate to groundwater And spread to cause a wider range of pollution. Soil and groundwater contaminated by petroleum hydrocarbons generally cannot recover by themselves within decades. According to relevant national regulations, these polluted soil and groundwater must undergo environmental assessment and restoration. [0003] The technologies currently applied to soil and groundwater remediation are mainly divided into two categ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B01D53/02
CPCB01D53/02B01D2253/102B01D2257/7027B01D2258/02B09C1/002B09C1/08
Inventor 张雷张强赵奇吕阳苗月
Owner 大庆三宝环保科技有限公司