Buried bivalve mollusk running water type ocean pollution stress experiment system

Abstract

The invention belongs to the technical field of marine pollutant stress research and relates to a buried bivalve mollusk running water type marine pollution stress experiment system. The experiment system comprises a water storage tank, a premixing tank, an experiment tank and a purification tank which are connected in sequence, as well as a peristaltic pump, a valve and an instrument device for automatic control which are arranged on a connecting pipeline, wherein a central fixing frame is arranged in the premixing pool, a seawater inlet, a mother liquor sample adding opening and an oxygenation stone are arranged in the middle of the central fixing frame, the seawater inlet is connected with a water outlet of the water storage pool, a mother liquor sample adding opening is connected witha mother liquor bottle, an oxygenation stone is connected with an oxygenation device air outlet pipe, a cover body for sealing the experiment pool is arranged at the top of the experiment pool and provided with an experiment pool water outlet connected with the purification pool, an experiment pool water inlet connected with the premixing pool is formed in the bottom of the experiment pool, a submersible pump is arranged on an inner wall of the premixing tank below the central fixing frame, and a dissolved oxygen probe is set at an outlet of the experimental pool. The experimental system provides technical support for accurately researching the influence of marine pollutants on shellfish.

Description

Technical field [0001] The invention belongs to the technical field of marine pollutant stress research, and relates to a flow-water marine pollution stress experiment system for buried bivalves. Background technique [0002] With the rapid economic development, environmental pollution in the coastal waters has become increasingly serious. China is a large shellfish farming country, with an annual output of more than 14 million tons of shellfish farming, of which buried bivalves represented by clams, cockles, and razors account for a large share (about 36% of them). Buried bivalve molluscs are widely used in relatively severely polluted areas such as intertidal zones and shallow coastal waters. Their adult mobility is poor, and they are directly exposed to the sedimentary environment. They have a strong bioconcentration effect on pollutants, so it is research An ideal material for the ecological toxicological effects of marine pollutants. Studying the physiological response of ...

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Problems solved by technology

Obviously, this type of experimental method cannot truly simulate the living environment of marine molluscs, especially buried bivalve molluscs. The main manifestations are: 1) Buried bivalve molluscs live in a sediment environment and are directly exposed to seawater. 2) During the experiment, the bait cannot guarantee a continuous and stable supply, and the concentration of pollutants cannot be guaranteed to be constant for a long time; 3) The transfer of shellfish during the experiment is very likely to be caused by changes in physical and chemical environmental conditions. Secondary coercion, etc.

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