Sewage heavy metal stratified sampling method

Abstract

The invention discloses a sewage heavy metal stratified sampling method, which belongs to the field of environmental detection. The sewage heavy metal stratified sampling method comprises the following steps that S1, a proper amount of sampling balls are put into a to-be-sampled water body, the sampling balls sink to the water bottom under the condition that the gravity of the sampling balls is larger than buoyancy in the initial stage. According to the scheme, heavy metal in different water layers is absorbed through the buoyancy ball, the buoyancy ball gradually and equivalently releases the balancing weight according to the principle that calcium peroxide reacts with water so that the buoyancy ball can float upwards and suspend in the different water layers, stratified sampling is achieved, and the buoyancy ball enables the elastic sealing film to deform to different degrees through the pressing effect of water pressure at different depths; the elastic sealing film is punctured by the pricking needle with the matched length to enable sewage to enter so as to enable the polymer adsorbent to absorb heavy metals, the buoyancy ball can continuously absorb the heavy metals in different water layers, so that complete sampling information is obtained, and the buoyancy ball can automatically float upwards after sampling is completed so as to facilitate recovery and analysis, and is simple in structure, low in cost and easy to operate and use.

Description

technical field [0001] The invention relates to the field of environmental detection, in particular to a layered sampling method for heavy metals in sewage. Background technique [0002] With the development of modern social economy and science and technology, under the premise of the great development and progress of the entire social economy, people pay more attention to economic benefits, thus ignoring environmental benefits, making the relationship between people and the environment worse and worse, and the construction of ecological civilization is on the rise. schedule. Therefore, the development of environmental protection is facing many new challenges and opportunities. Environment detection is very important and has an important supervisory function. It includes on-site sampling, experimental analysis, data collection, analysis and synthesis and other processes. Based on this, this paper studies the role and significance of environmental monitoring in environment...

AI Technical Summary

Problems solved by technology

[0004] The premise of heavy metal detection in sewage is to sample the polluted water body. The current sampling method is to use a simple sampling bottle, but this can only take samples from the surface water body. To take water body samples at different depths, only more complex equipment can be used. It is cumbersome and has limited scope of application

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