Temperature-controlled water ecological chronic toxicity testing device

Abstract

The invention relates to a temperature-controlled water ecological chronic toxicity testing device, which comprises a support. A water storage tank and a plurality of constant temperature water bath tanks are placed on the support from top to bottom; the water storage tank is internally provided with a water pump and a constant temperature water bath controller connected with the water pump; eachlayer of constant temperature water bath tank is internally provided with a plurality of testing cylinders; an upper water pipe is connected between one side of the constant temperature water bath tank and the constant temperature water bath controller; the other side of the constant temperature water bath tank is provided with an overflow port; a lower water pipe is connected between the overflowport and the water storage tank; an illumination pipe and an illumination adjuster are arranged above each row of test cylinders; a test cylinder fixing device is mounted in the constant temperaturewater bath tank; the test cylinder fixing device is composed of a horizontal plate and a plurality of round holes opened in the horizontal plate; and the test cylinder is placed in the round hole. Thetemperature of all test cylinders during the test process can be ensured to be completely the same, and errors brought to the test by external factors can be avoided.

Description

technical field [0001] The invention relates to a temperature-controlled aquatic ecology chronic toxicity test device, which belongs to the technical field of aquatic biological toxicity test equipment. Background technique [0002] The water ecological chronic toxicity test is an experimental method used to evaluate the toxicity of pollutants by measuring the toxic effects of low-concentration pollutants on the life cycle of aquatic organisms. This test method can obtain the maximum allowable concentration of pollutants and provide a basis for formulating water quality standards. Since the 1960s, it has been widely valued. [0003] With the rapid development of my country's economy, a large amount of industrial wastewater and domestic sewage are discharged into rivers and lakes, causing a certain degree of pollution to water sources. With the deepening of the concept of environmental protection, the task of ensuring the safety of water quality in water sources and ensuring...

AI Technical Summary

Problems solved by technology

If multiple groups of fish tank tests are carried out at the same time, multiple heaters need to be installed, resulting in a complex structure and larger volume of the entire device, which brings certain difficulties to installation, high test costs, and greatly increases the difficulty of achieving precise control

Images