Interception tank for overland runoff in heavy metal contaminated area of mine

Abstract

The invention provides an interception tank for overland runoff in a heavy metal contaminated area of a mine, and belongs to the field of environmental engineering. The interception tank comprises three stages of tank bodies which are separated by virtue of wire meshes, wherein the first stage of tank is filled with a biomass material, the second stage of tank is filed with a mineral material, and the third stage of tank is filled with chitin and microorganisms; the wall of the interception tank is made of coal ash water permeable bricks, a plurality of pores having a diameter of 3-5cm are formed in the front wall of the interception tank, and two pores having a diameter of 12-16cm are formed in the side wall of the interception tank; the bottom of the interception tank is made of impermeable bricks; about two fifths of the whole tank body is arranged underground, and a plurality of tank bodies are arranged in parallel to form a whole interception system. The single interception tank is small in size and convenient to move and assemble, is low in cost of filled adsorption materials and remarkable in adsorption effect, has the advantages of simple interception process, convenience in operation and low operation management difficulty, can be used for realizing three-stage interception of multiple heavy metals in overland runoff of the heavy metal contaminated area of a mine, and has a remarkable effect of reducing heavy metals.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to an intercepting box suitable for surface runoff in heavy metal polluted areas of mines. Background technique [0002] In recent decades, the increasing and harmfulness of heavy metal pollution has attracted the attention of environmental scholars from all over the world. The harmfulness of heavy metals to the environment is prominently manifested as: they cannot be biodegraded, tend to accumulate in living organisms, and cause various diseases and diseases. dysfunction. The soil around the mining area is eroded by various heavy metals all the year round, especially during the heavy rain season. The serious soil erosion leads to further diffusion of pollutants, which not only affects the water quality of the surrounding rivers, but also poses a hazard to the drinking water safety of the surrounding residents. [0003] At present, the treatment methods of wastewater contai...

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Problems solved by technology

[0004] At present, the construction of pollutant interception system is mostly used to treat industrial wastewater, such as in the electroplating, printing and dyeing industry; for the interception of soil seepage and surface runoff, it is mainly aimed at the problem of excessive nitrogen, phosphorus and organic matter in the drainage outside the farmland production area, while There are very few applications for the removal of heavy metals, and the current interception system is complex and immovable

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