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Method for quickly determining flow direction of groundwater polluted by organic matter

A technology for groundwater and organic matter, applied in speed/acceleration/shock measurement, measuring devices, instruments, etc., to achieve fast detection speed, environmental friendliness, and high detection sensitivity

Inactive Publication Date: 2013-01-30
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Application Information

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Problems solved by technology

When the groundwater flows through the leakage area of ​​the pollution source and is polluted by organic matter, due to the injection of exogenous organic matter, the composition ratio of fluorescent organic matter in the groundwater has changed, and some new fluorescent organic matter will appear. From then on, the composition of various organic matter in the downstream groundwater The ratio will be quite different from the upstream

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  • Method for quickly determining flow direction of groundwater polluted by organic matter
  • Method for quickly determining flow direction of groundwater polluted by organic matter
  • Method for quickly determining flow direction of groundwater polluted by organic matter

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0021] Sample collection: Samples were collected from a landfill in Beijing and the groundwater on both sides. The groundwater of this landfill has already been polluted, and the polluted area was greater than 2km in 2010 2 , diffuse 1750m downstream. A total of 7 groundwater samples were collected at the landfill and its vicinity, which are S1, S2, S3, S4, S5, S6, and S7 in sequence; S1-S3 is the point on the left side of the landfill, and point S4 is the landfill site At point, S5-S7 landfill to the right of point.

[0022] DOC adjustment and three-dimensional fluorescence spectrometry: eg figure 1 As shown, after passing the collected samples through a 0.45μm filter membrane, the DOC content was measured, except that the S4 point was 44.73mg / L and needed to be adjusted to 0-1 .

[0023] Fluorescence data processing: Export the measured fluorescenc...

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Abstract

The invention relates to a method for quickly determining flow direction of groundwater polluted by organic matter, which mainly comprises the following steps of A, sample collection; B, sample pretreatment and fluorescence spectrum determination; C, three-dimensional fluorescence spectrum data processing; D, proportion calculation of area fluorescence volume of different kinds of fluorescent organic matter in total volume; E, similarity analysis of components of the fluorescent organic matter in groundwater samples in different places; and F, determination of the flow direction of the groundwater. The method has the advantages of little sample demand, high detection sensitivity, less workload, high detection speed and environment friendliness.

Description

technical field [0001] The invention belongs to the technical field of groundwater pollution and prevention, and specifically relates to a method for judging the flow direction of groundwater based on the similarity of the composition ratio of fluorescent organic matter in groundwater at different geographic locations. Background technique [0002] Non-standard landfilling of domestic garbage, wanton discharge of sewage, and large-scale application of pesticides have caused groundwater in many areas of our country to be polluted by organic matter. To predict the scope and change trend of groundwater organic matter pollution, and then control the polluted groundwater, it is first necessary to determine the flow direction of groundwater. The water level meter can measure the depth of the groundwater aquifer, and the flow direction of the groundwater can be determined by comparing the depth of the aquifer measured at different locations. However, this process will encounter tw...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01P13/02
Inventor 席北斗何小松姜永海许其功白顺果李丹
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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