Rigid sediment water sample layered sampling and real-time monitoring device

Abstract

The invention discloses a rigid sediment water sample layered sampling and real-time monitoring device. The rigid sediment water sample layered sampling and real-time monitoring device mainly comprises a pore water sampling device which downward stretches into a sampling region; the pore water sampling device is composed of at least two pore water sampling units; upper ends of the pore water sampling units are fixed through a fixed pipe; an overlying water collection groove is arranged in the middle of the fixed pipe and an operation handle is arranged at the upper part of the fixed pipe; thepore water sampling device comprises a water-permeable protection cover body; a sampling plate is arranged on an inner side face of the water-permeable protection cover body; a polypropylene film collection pipe is wound on the inner side face of the collection plate; and two pipe ends of the polypropylene film collection pipe penetrate through the fixed pipe and the operation handle to be led outthrough a solution output pipe and then are communicated with a pulling collection device. By adopting the rigid sediment water sample layered sampling and real-time monitoring device, pore water atdifferent depths of rigid sediment and overlying water can be collected and the overlying water can be subjected to water quality monitoring in real time; and meanwhile, the device ensures that a sample obtained by sampling can meet analysis tests of inorganic matters including metal elements, nitrogen, phosphorus and the like and other organic matters.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a device for layered sampling and real-time monitoring of hard sediment water samples. Background technique [0002] Sediments are divided into soft sediments and hard sediments, which are the most important sinks of water pollutants. At the sediment-water interface, pollutants undergo a series of physical and chemical reactions such as adsorption and desorption, oxidation and reduction, which affect the migration and transformation process of pollutants. Pollutants exist in various forms in sediments, among which the water-soluble form has the highest biological activity. In the sediments with different buried depths, affected by factors such as sediment composition and oxidation-reduction potential, the pollutant content presents certain vertical differentiation characteristics. Therefore, accurate acquisition of sediment pore water and overlying water sampl...

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Problems solved by technology

[0005] (1) When some existing sampling devices are used for sampling hard sediments, they are very easy to cause damage to the device and the adsorption film, and it is impossible to obtain effective samples;

[0006] (2) Some samplers use stainless steel as the main frame, which makes the collected samples unable to analyze metal elements;

[0007] (3) It is difficult for existing samplers to collect samples at different depths at the same position at the same time, and cannot reflect the vertical differentiation characteristics of pollutants in sediments;

[0008] (4) Existing samplers can only collect sediment pore water, and cannot simultaneously collect overlying water and monitor its water quality in real time

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