River and lake bottom sludge pollutant flux test method and device based on diffusion theory
A technology of diffusion theory and testing method, which is applied to the testing of the pollutant flux of river and lake sediments. The experimental device field of this testing method can solve the problems of cumbersome operation, large calculation error, wall effect, etc., and achieve simplified testing steps and extensive The effect of applicability and convenient operation
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[0079] A method for testing the flux of river and lake sediment pollutants based on diffusion theory: the steps are:
[0080] A. Sediment sample collection and processing: 1# sampling point is located in Changzhou, Jiangsu, Beijing-Hangzhou Canal, coordinates 31°31′40.33″, 120°0′36.98″; 2# sampling point is located in Gehu Lake in Jiangsu, coordinates 31° 34'58.22", 119°53'56.87". Use the KH0201 Peterson mud sampler to collect 2 kg of sediment samples at each sampling point. After removing debris such as gravel, shells, and animal and plant residues, put them into polyvinyl chloride bags and store them away from light.
[0081] B. Sample loading: remove the fixing bolts of the flange, remove the base, put the bottom mud into the bottom, carefully smooth the mud surface, make the mud surface level, the thickness of the bottom mud is about 5cm, and then put the upper column and the base with The fixing bolts are tightly connected;
[0082] C. Water injection: In the case that ...
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