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A Rapid Diagnosis Method for Groundwater Pollution

A technology for groundwater pollution and rapid diagnosis, which is applied in general water supply conservation, testing water, and material inspection products. Investigate costs and the effect of promoting technological progress in the industry

Active Publication Date: 2020-06-23
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the investigation of groundwater pollution on site mainly relies on on-site sampling and laboratory testing and analysis. The randomness of sampling points is strong, the loss of pollutants caused by sampling disturbance is large, the test cycle is long, and the cost is high. Discrimination, and errors in determining the scope of pollution are prone to occur, making it difficult to guarantee the effect and cost control of pollution control in the later stage

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  • A Rapid Diagnosis Method for Groundwater Pollution
  • A Rapid Diagnosis Method for Groundwater Pollution
  • A Rapid Diagnosis Method for Groundwater Pollution

Examples

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Embodiment 1

[0047] Embodiment 1: This embodiment specifically relates to a rapid diagnosis method for groundwater pollution, and the diagnosis method specifically includes the following steps:

[0048] (1) Collect the environmental hydrogeological data of the shallow soil layer in the soft soil area, and divide it into type I, type II, type III and type IV according to the type of stratigraphic combination. The soft soil area in this embodiment can be divided into administrative divisions. Collection, for example, within the scope of counties, cities, and provinces, in this embodiment, the soft soil area is selected as the shallow strata within 20 meters below the ground in the Shanghai area; wherein:

[0049] Type I stratigraphic combination types from top to bottom are filled soil layer, hard shell layer, silty soil layer or silt layer, and silty cohesive soil layer;

[0050] The stratum combination type of Type II is, from top to bottom, a filling layer, a hard shell layer, and a silty...

Embodiment 2

[0092] Embodiment 2: This embodiment specifically relates to a method for rapid diagnosis of groundwater pollution, and is described in conjunction with actual engineering cases:

[0093] (1) Obtain the division rules of strata combination types in soft soil areas;

[0094] (2) as figure 1 As shown, a polluted site 1 covers an area of ​​about 29,000 m 2 , the shallow stratum buried within 20m in the site is mainly composed of the first layer of fill, the second layer of soil 1 layer of silty clay, the second 3 It consists of four soil layers, including the layer of clay silt (local sand) and the fourth layer of silty clay. Among them, the second 3 Layers of clayey silt are generally distributed, with a thickness of about 6-8m, which is conducive to the migration of pollutants. That is to say, the polluted site 1 in this embodiment belongs to the type I stratigraphic combination type.

[0095] (3) After that, through the investigation, it was found that the west, north an...

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Abstract

The invention discloses a rapid diagnosis method for groundwater pollution, wherein the method comprises the following steps: collecting environmental hydrogeology condition information of shallow soil layers in a soft soil area, and dividing according to the stratum combination type; determining a belonging stratum combination type of a pollution site; determining internal and external river distribution conditions of the pollution site; according to the belonging stratum combination type of the pollution site and the internal and external river distribution conditions, preliminarily evaluating the migration diffusion direction and the pollution depth of a pollution source in the pollution site; according to the preliminary assessment conclusion, setting a plurality of in-situ test pointsin the corresponding area and depth in the pollution site, to rapid measure a space distribution condition of pollutants; and according to the on-site measured pollutant space distribution conditions, sampling and monitoring on site in a key pollution area. The method has the advantages: the establishment of the rapid diagnosis method provides a perfect theoretical basis, technical method and tool device for improving the efficiency and effect of groundwater pollution investigation and reducing the cost of investigation.

Description

technical field [0001] The invention belongs to the technical field of environmental geotechnical engineering, and in particular relates to a rapid diagnosis method for groundwater pollution. Background technique [0002] Groundwater resources are an important strategic resource to support sustainable social development, and the amount of groundwater resources in my country accounts for about 1 / 3 of the country's total water resources. With the development of my country's social economy, the situation of groundwater pollution is becoming more and more serious, and the problem of groundwater pollution in some areas is very prominent. Groundwater pollution shows an expanding trend from point to surface, from shallow to deep, and from urban to rural areas. The degree of pollution is becoming more and more serious. Groundwater pollution pollution incidents occur frequently and cause serious harm. It is urgent to carry out groundwater pollution investigation, evaluation and treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/18
CPCG01N33/18Y02A20/20
Inventor 许丽萍王蓉李韬沈超李梅沈婷婷冯凯
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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