Carbon fiber-based mine wastewater treatment system and groundwater decontamination process

Abstract

The invention discloses a carbon fiber-based mine wastewater treatment system and a groundwater decontamination process. The mine wastewater treatment system comprises a falling water aeration tank, a dosing tank, a primary sedimentation tank and multiple stages of carbon fiber contact oxidation tanks which are connected in series, wherein the falling water aeration tank, the dosing tank, the primary sedimentation tank and the carbon fiber contact oxidation tanks are connected sequentially, the dosing tank is used for adding a pH adjusting agent, the water inlet of the first-stage carbon fiber contact oxidation tank is connected with the water outlet of the primary sedimentation tank, and is provided with a decanter, and the water outlet of the last-stage carbon fiber contact oxidation tank is connected with a river channel or ditches; and the carbon fiber contact oxidation tanks are also provided with sludge discharge pipes and gates, each stage of the carbon fiber contact oxidation tanks is provided with a carbon fiber water purification system, and biofilm and algae fields which are formed by the carbon fiber water purification systems have the functions of retention, adsorption, adhesion, bridging, flocculation, bio-oxidation and bio-enzyme catalytic oxidation of wastewater. Iron manganese oxide which is a product of carbon fiber purification and treatment of wastewater is adopted as a catalyst, the operation cost is low, the decontamination effect is good, and the system is suitable for treatment of large-scale mine wastewater and groundwater sewage.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a groundwater or mining waste water treatment technology, in particular to a mine waste water treatment system and a sewage treatment process based on carbon fiber water purification products. Carbon fiber, microbial film, photocatalytic oxidation, and biological enzyme catalytic oxidation technology are combined to treat various polluted mine wastewater and groundwater. Background technique [0002] As a precious freshwater resource for human beings, groundwater is an important source of recharge for river reservoirs and an important water source in northern regions. With the development of modern society, the increase of population, and the process of industrialization, groundwater has been polluted to varying degrees. On the one hand, it is natural pollution, and on the other hand, it comes from man-made pollution sources. Since the 1960s, groundwater pollution has gra...

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Problems solved by technology

The technological process is still relatively complicated, and the operating cost is also high; on the other hand, it is difficult for divalent manganese to be quickly oxidized to MnO in the filter layer 2 However, it is attached to the filter material to form a manganese active filter membrane, and the formation period of the system's biological manganese removal ability is relatively long. It generally takes more than three months to start. In practical applications, due to frequent backwashing, the biofilm is destroyed as soon as it grows. Therefore, the oxidation treatment efficiency of the microbial membrane on the manganese sand filter bed is very limited, and the manganese removal effect is even more unstable.

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