Water-sediment interface water sample sampling system and sampling method thereof

Abstract

The invention discloses a water-sediment interface water sample sampling system and a sampling method thereof. The water-sediment interface water sample sampling system comprises a surface water bodysampling device and a shallow pore water sampling device, the surface water body sampling device comprises a vacuum sampling pipe for collecting a surface water sample; a filter screen for filtering impurities is arranged at the head of the sampling pipe; a telescopic needle head is connected with the sampling pipe; the needle head is connected and fixed on a vertical iron rod; the top and the middle part of the iron rod are connected with a high-strength rubber band and a compressed spring, the tail part of the sampling pipe is provided with a plug and a wood rod for sealing and stably and vertically distributing the vacuum sampling pipe, a pair of welded electromagnets is arranged on a base and the top of the surface water body sampling device, and a rubber cylindrical mold with two openends is arranged beside the electromagnets. In combination with the mechanical automation principle, simultaneous sampling of water samples (surface water and shallow pore water) on the water-sediment interface is achieved through reasonable structural design, and the device is wide in application, high in automation degree, economical and capable of greatly saving the manual sampling cost.

Description

technical field [0001] The invention relates to the field of water body monitoring, in particular to a water-sand interface water sampling system and a sampling method thereof. Background technique [0002] For a long time, my country's river water pollution problem has been very serious. Every year, a large amount of industrial wastewater and domestic sewage are directly discharged into surface water without treatment, resulting in a very rapid deterioration of water quality. In addition to surface water, shallow groundwater (pore water) is also one of the important water sources for society due to its special distribution characteristics. According to survey data released by various agencies in recent years, more and more groundwater has also been polluted to varying degrees. However, the current treatment of rivers still only stays in surface water, and cannot fundamentally restore the ecological health of rivers. Sediment, as a member of the river ecosystem, has a stron...

AI Technical Summary

Problems solved by technology

However, the current sampling method for the water body near the water-sand interface has been difficult to capture due to technical difficulties. The accuracy of the water depth (difficult to be accurate to the centimeter level) is very high, and it is difficult to locate this position.

Capturing this vertical gradient of pollutant concentration requires specially designed high-resolution sensors and samplers at high cost

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