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Method for determining environmental-protection dredging range based on water pollution bottom mud identification and evaluation

A technology for environmental protection dredging and determination

Active Publication Date: 2012-12-19
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a new method for determining the scope of environmental dredging based on the identification and evaluation of water body polluted sediment. The technical problem to be solved is to accurately determine the scope of environmentally friendly dredging of polluted sediment.

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  • Method for determining environmental-protection dredging range based on water pollution bottom mud identification and evaluation
  • Method for determining environmental-protection dredging range based on water pollution bottom mud identification and evaluation
  • Method for determining environmental-protection dredging range based on water pollution bottom mud identification and evaluation

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example 1

[0080] The implementation of the present invention and its technical effects will be described in detail below by taking Taihu Lake as an example in conjunction with the accompanying drawings.

[0081] 1. By understanding the pollution status of Taihu Lake water body, the pollution load of rivers entering the lake, and the quality of sediment, a list of potential pollutants in Taihu Lake sediment was initially formulated, as shown in Table 1.

[0082] Table 1 List of Monitoring Items for Taihu Lake Sediment Samples

[0083]

[0084]

[0085] 2. Design sampling plan and carry out sample collection. Such as figure 1 As shown, in order to determine the sediment accumulation, nutrients, heavy metals, and the distribution of toxic and harmful organic substances in Taihu Lake, the grid layout is the main point of the system, and the sampling points are appropriately intensified in the estuary of the lake and the northern bay of the lake, and the measurement points on the enti...

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Abstract

The invention relates to a method for determining an environmental-protection dredging range based on water pollution bottom mud identification and evaluation, and the method comprises the following steps of formulating a potential pollutant list of the water bottom mud; formulating a sampling scheme of the water bottom mud and sampling the bottom mud according to the sampling scheme; analyzing and testing the collected sample to obtain a physical index and a chemical index of the sample; primarily identifying and evaluating the water bottom mud; determining a position and a range of a key research area, and determining pollution research areas and key pollutants of different types by utilizing the spatial interpolation analysis of a geological information system; identifying and evaluating the key research area and the key pollutants in detail; and utilizing a spatial analysis module in the geological information system to overlap a determined general nitrogen severe pollution area, main phosphorus severe pollution area, heavy metal high-risk area and durable organic pollution area, so that the bottom mud environmental-protection dredging range of different pollution types can be obtained. Due to the adoption of the method, the environmental-protection dredging range of the pollution bottom mud can be precisely determined.

Description

technical field [0001] The invention relates to a technology for determining the dredging range in the field of environmental protection engineering, in particular to a method for determining the range of dredging for environmental protection based on identification and evaluation of water body polluted sediment. Background technique [0002] Water pollution of rivers and lakes has become a worldwide environmental problem. The sources of pollutants in rivers and lakes can be divided into endogenous pollution and exogenous pollution. After the initial success in the treatment of exogenous pollution, endogenous pollution has become the main source of water body pollutants. For rivers and lakes, sediment is the main accumulation place of various pollutants, and thus becomes the main internal source of rivers and lakes. The sediment-water interface is the main place for solid-liquid two-phase exchange and reaction of various pollutants. Numerous studies have shown that heavy m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 姜霞王书航王雯雯宋倩文王岩保玉镯胡佳晨张博
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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