Seawater suspended matter sampling device and method

Abstract

The invention discloses a seawater suspended matter sampling device and method. The device comprises a submersible pump (10), a filter (20) and a connecting pipeline (30), wherein the submersible pump (10) can be placed into seawater; the filter (20) can be fixed on a ship's rail and comprises a filter bag (28) for separating the seawater and suspended matter, the suspended matter is retained in the filter bag (28) during sampling, and the bore diameter of the filter bag (28) is set according to experiment requirements; the connecting pipeline (30) is used for connecting the submersible pump (10) with the filter (20). The seawater suspended matter sampling device has the advantages that the seawater and the suspended matter can be separated continuously, sampling efficiency is increased, manpower and material resources are saved, the minimum particle size of the to-be-collected seawater suspended matter can be selected freely due to the fact that the bore diameter of the filter bag is set according to the experiment requirements, the sampling speed of the seawater suspended matter is increased greatly, and sample representativeness can be guaranteed at the same time.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a seawater suspended matter sampling device and a sampling method. Background technique [0002] The Kd factor is a key parameter in the environmental impact assessment of nuclear power plants, and it is of great significance for evaluating the radiation dose of radionuclides in the liquid effluent of nuclear power plants to the public. When measuring the Kd factor in seawater, in order to determine the experimental conditions, it is necessary to measure the properties of the suspended matter sample, and the property measurement requires more suspended matter samples (5g-10g dry sample). When the existing method collects suspended solids in seawater, a sampling bottle is used to collect seawater samples to the laboratory, and a suction filtration device is used to filter the seawater samples in the laboratory, and the suspended solids on the filter membrane are collected as suspended...

AI Technical Summary

Problems solved by technology

[0003] Although the existing method provides a method for collecting seawater suspended matter, it still has the following disadvantages: the sample size of the suspended matter collected by a single filtration is small (5mg~10mg), and the filtration time is long (20min-30min); The workload of suspended matter samples (5g~10g) required for the measurement of sample properties is huge; after a large number of seawater samples are collected at the same time, the suspended matter in the seawater samples that cannot be filtered in time is easy to deposit in the sampling bottle, which affects the collection of suspended matter; The sample is attached to the filter membrane, which may damage the filter membrane when it is removed, resulting in sample contamination

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