Recycling and treating method for mine water containing suspended substances

Abstract

The invention discloses a recycling and treating method for mine water containing suspended substances, which comprises the following steps of: (1) regulating water quantity by introducing the mine water into a regulating pond; (2) coagulateing and precipitating, carrying out flocculation reaction and precipitate separation in a compositive reaction pond to remove most suspended substances; (3) filtering, and introducing the solution into a clear water pond after filtration in a sand filter and sterilization with chlorine dioxide to obtain drinking water meeting drinking water standards. The invention is suitable for mine water containing more suspended substances and containing oil pollutant, removes the suspended substances at the removing rate higher than 98.5%, and has the advantages of simple equipment and operation process.

Description

technical field [0001] The invention relates to a water treatment method, in particular to a method for recycling mine water containing suspended matter Background technique [0002] Mine water is a pollution source with industry characteristics in the coal industry, with a large amount and a wide range. The annual discharge of mine water in my country's coal industry is about 2.5 billion m 3 . At the same time, workers in coal enterprises consume a lot of water for bathing and other domestic activities. If the mine water is properly treated and used as drinking water for coal enterprises, it will certainly alleviate the water pressure of coal enterprises and be conducive to the sustainable development of enterprises. [0003] According to the water quality characteristics of mine water, it is customary to divide mine water into 5 categories: clean mine water, high salinity mine water, acid mine water and mine water containing toxic and harmful elements. Mine water contai...

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Problems solved by technology

[0004] Chinese patent CN1884145 discloses a "patented mine water treatment process and mine water integrated treatment device", including coagulation sedimentation, adsorption sedimentation, and pH adjustment process steps. The equipment and operation process of this process are relatively complicated, and only suitable for For the treatment of mine water with low suspended solids and no organic matter

For mine water with a high content of suspended solids, the removal rate of suspended solids in this process cannot meet the requirements of reuse, and at the same time, it will also have an adverse effect on the subsequent disinfection treatment

In addition, the process does not remove organic matter contained in mine water

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