Device for testing toxicity of contaminated soil by using soil organisms

Abstract

The invention relates to the technical field of soil ecology, in particular to a device for testing the toxicity of contaminated soil by using soil organisms. The device comprises a box body, and a treatment chamber and a culture chamber are arranged in the box body. The treatment chamber comprises a humidifying air duct and a drying air duct, and the drying air duct and the humidifying air duct are connected with the culture chamber. Observation glass is arranged on the side wall of the culture chamber. At least three sets of partition plates are arranged in the culture chamber in a staggeredmode, culture boxes are slidably connected to the upper ends of the partition plates, ventilation openings are further formed in the surfaces of the partition plates, top plates are arranged at the top ends of the culture boxes, ventilation nets are arranged on the surfaces of the top plates, and the top plates are fixedly connected to the inner wall of the box body. A honeycomb type rotating wheel is further arranged in the treatment chamber. The culture boxes can collect soil, soil organisms are cultured in the culture boxes to evaluate the toxicity of the soil, the operation is simple andconvenient, the cost is lower, isolation plates are used for layering the culture chamber, air holes play a role in ventilation and water permeation, and the treatment chamber can be used for adjusting the air humidity in the culture chamber.

Description

technical field [0001] The invention relates to the technical field of soil ecology, in particular to a device for testing the toxicity of soil organisms to polluted soil. Background technique [0002] Soil pollutants can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium and fluorine, etc. Organic pollutants mainly include organic pesticides, phenols, cyanides, petroleum, synthetic detergents, 3, 4-benzopyrene, and harmful microorganisms brought by urban sewage, sludge, and manure. When there are too many harmful substances in the soil and exceed the self-purification capacity of the soil, the composition, structure and function of the soil will change, the microbial activities will be inhibited, and the harmful substances or their decomposition products will gradually accum...

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Problems solved by technology

[0009] In the prior art, the diagnostic test of soil toxicity is generally carried out by using the artificial climate box device for detection and analysis. The artificial climate box device has the disadvantages of expensive equipment, low ventilation efficiency or inability to completely discharge toxic and harmful gases, too narrow test space, and invertebrate soil. Disadvantages such as the phenomenon of escape are prone to occur during animal breeding and testing

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