Ecological northern alkaline mine water treatment system and ecological northern alkaline mine water treatment method

Abstract

The invention discloses an ecological northern alkaline mine water treatment system and an ecological northern alkaline mine water treatment method. Firstly, alkaline mine water passes through a primary sedimentation basin, so that large-grain suspended matters in the sewage are sedimentated, the sewage enters a primary filtering basin and is filtered after primary sedimentation, the primary filtering basin is mainly built with mixed Liyang soil and coal gangue, which are used as adsorbent for removing pollutants in the sewage, and in order to enhance the water treatment effect, the filtering basin consists of a plurality of alternate filtering basins and sedimentation basins; the sewage enters a sedimentation basin after primary filtration, aquatic weeds in the sedimentation basin are utilized to separate sludge from water and concentrate the sludge, pollutants in the sewage are further sedimentated, the sewage enters a secondary filtering basin and is filtered after sedimentation, the filtering basin is built with peat granules, and can effectively remove pollutants in the mine water containing waste machine oil, emulsified oil and other organic pollutants, and the salt balance and pH value of the water are regulated; finally, the filtered water flows into an ecological pool, and is used for raising ornamental fishes, and thereby the sewage is recycled.

Description

technical field [0001] The invention belongs to the technical field of northern alkaline mine water treatment, and in particular relates to an ecological treatment system and method for northern alkaline mine water. Background technique [0002] Mine water in coal mines refers to all the water that infiltrates into the underground mining space during the coal mining process. The discharge of mine water is one of the pollution sources with industry characteristics in the coal mining industry, with a large amount and a wide range. When mine water flows through the coal mining face and roadway, due to the influence of human activities, coal rock powder and some organic matter enter the water. In my country, mine water generally contains suspended solids mainly composed of coal rock powder, as well as soluble inorganic salts and organic matter. There are fewer pollutants and generally do not contain toxic substances. Therefore, the purification treatment and utilization of mine ...

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Problems solved by technology

[0003] The commonly used method of existing mine water treatment is coagulation method, which requires a large amount of chemicals and the sludge formed is difficult to handle. If it is improperly managed, it will easily cause secondary pollution; reverse osmosis method has high treatment and operation costs; simple mine water treatment Station filtration method, using sand filter or carbon filter (activated carbon or white carbon as the filter material), except for a small amount of suspended solids in the water, almost no removal of most of the salt, and the treated mine water is still alkaline , unable to meet the requirements of filtering boiler cooling water and landscape water

[0004] At present, there are various problems in the treatment of various types of mine water. It is necessary to conduct in-depth research on various types of mine water, explore corresponding new treatment methods, improve the resource utilization rate of mine water, and solve the problems that restrict the development of coal mining enterprises. "Bottleneck problem

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