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Method and system using micro-nanometer bubbles to repair underground water in in-situ mode

A technology of micro-nano bubbles and in-situ repair, which is applied to the adjustment method of biological treatment, the treatment of contaminated groundwater/leachate, chemical instruments and methods, etc., and can solve the problem that the degradation ability of aerobic microorganisms has not been fully exerted and the repair effect Limited, poor oxygen supply effect and other problems, to achieve the effect of good oxygen supply effect, large influence range and low cost

Active Publication Date: 2014-04-02
TSINGHUA UNIV +1
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Problems solved by technology

However, in the process of biological ventilation, the air generally moves in the form of microchannels or independent bubbles of millimeter-centimeter particle size in the groundwater. limited

Method used

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  • Method and system using micro-nanometer bubbles to repair underground water in in-situ mode
  • Method and system using micro-nanometer bubbles to repair underground water in in-situ mode

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Embodiment approach

[0033] Utilize the method and system described in the present invention to carry out the on-the-spot implementation scheme of micro-nano aeration removal of organic pollutants in groundwater as follows:

[0034] (1) Determine the area of ​​organic pollutants in groundwater, determine the flow direction of groundwater, and determine the number of water injection wells needed; for a single water injection well, the maximum range of the polluted area does not exceed 500m, and the concentration of organic pollutants When it is not more than 5000ppm, the method and system of the present invention can have a better repair effect;

[0035](2) According to the measurement in step (1), build one or more water injection wells upstream of the polluted area, or use existing well locations; install micro-nano aeration devices 1 below the groundwater level of the water injection wells, Solar power supply device 9 is installed, and micro-nano aeration device 1 is connected with solar power s...

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Abstract

A method using micro / nano bubbles for in situ remediation of groundwater. An injection well is arranged at an upstream location of an area where the groundwater (7) is polluted by an organic pollutant. A micro / nano aerator apparatus (1) is placed into the injection well. Electricity is supplied via a solar power supply apparatus (9) or a battery. Remote monitoring and control from the ground are implemented via a remote wireless communication device (6). Air (4) and water are passed through the micro / nano aerator apparatus (1) to produce micro / nano bubble water (8); same is introduced into a groundwater (7) system, and directly decomposes the organic pollutant or continuously replenishes electron acceptors for microorganisms. This facilitates the degradation and removal of the organic pollutant, while at the same time arranges a monitoring well to monitor and to analyze in real-time parameters during the removal process of the organic pollutant, and remotely adjusts the occurrence time of the micro / nano bubbles, the amount of water injected, and the amount of aeration. Also provided is a system implementing the method using the micro / nano bubbles for remediation of groundwater. The method and system are of reduced costs.

Description

technical field [0001] The invention belongs to the technical field of restoration of polluted groundwater, and in particular relates to a method and system for in-situ restoration of groundwater with micro-nano bubbles. Background technique [0002] Environment and development are major issues of common concern to the international community today. In order to achieve sustainable development, environmental protection and governance should be an integral part of the development process. As an important part of global water resources, groundwater resources play an extremely important role in economic and social development under the condition of serious surface water pollution in our country. In recent years, due to the rapid development of social economy and the massive production of industrial waste, the problem of global environmental pollution has become increasingly serious, and the petrochemical industry is one of the important sources of pollution. At present, the q...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/02
CPCB09C1/002C02F2209/008C02F3/006C02F2101/30C02F2303/26C02F2103/06C02F3/226C02F2305/06Y02W10/10
Inventor 胡黎明宋德君李恒震
Owner TSINGHUA UNIV
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