Practical method for determining dredging depth of polluted bottom mud in environmental dredging engineering

Abstract

The invention discloses a practical method for determining the dredging depth of polluted bottom mud in environmental dredging engineering, which belongs to the technical field of water pollution control and ecosystem restoration. The method comprises the following steps of: sampling columnar bottom mud by combining sensory organ judgment with laboratory analysis; laminating in field and sampling according to physical characteristics; initially determining the dredging depth of polluted bottom mud; further analyzing the pollutant concentration by adopting a laboratory method; hierarchically sorting laboratory data according to indexes; and finally determining the dredging depth of the polluted bottom mud. The method is easy to operate, has low cost, certain accuracy and precision, a wide application range and small quantity of limitation factors, is suitable for large-scale surveying, sampling and analyzing of bottom mud, is a method with high operability and feasibility in determination of an engineering dredging range and dredging depth in polluted bottom mud dredging engineering, and has a wide application prospect in the engineering field.

Description

(1) Technical field: [0001] The invention provides a practical method for determining the dredging depth of polluted bottom mud in an environmental dredging project, and belongs to the technical field of water pollution control and ecological restoration. (two) background technology: [0002] In recent years, with the rapid development of the economy and the continuous increase of human activities, the water quality of lakes and rivers in my country has shown a downward trend. At present, the pollution status of rivers in our country has expanded from the previous urban pollution and industrial pollution to almost large and small rivers, and the pollution has shown a trend of spreading from cities to villages. Due to factors such as the imperfect drainage system and the hardening of embankments, many urban lakes and rivers have become urban pollution rivers, even reaching the level of black and smelly, making passers-by cover their noses and become a concentrated area of ​​p...

AI Technical Summary

Problems solved by technology

[0004] At present, there are several methods for dredging depth of contaminated sediment, all of which require a large number of sampling and laboratory analysis data, and then calculate the pollutant content to find the breaking point, or compare with the environmental benchmark value, or adopt heavy metal ecological hazard analysis There are several methods to determine the depth of dredging. Several methods have their own characteristics and different scopes of application. However, from the perspective of supporting the project plan and project content in the engineering project, they all have the same disadvantage, that is, a large number of experiments are required. Analysis, in the feasibility study stage and design stage of engineering construction, it is not easy to operate

Images