Process method for removing manganese from groundwater

Abstract

The invention belongs to the technical field of a groundwater purification treatment, and relates to a process method for removing manganese from groundwater. According to the method, quartz sand is washed and dried, and is soaked by using a HNO3 solution; the acid liquid is poured, and the soaked quartz sand is rinsed with water until the pH value is neutral; the resulting quartz sand is dried and stored to provide a spare use; in a reaction kettle, a potassium permanganate solution and the dried quartz sand are added, a complete stirring treatment is performed, a cooling treatment is performed at a room temperature, the remaining residue liquid is poured, and the filtering material is rinsed by using chlorine-free water; the filtering material and the quartz sand are prepared into a composite filtering layer according to a certain ratio, and the composite filtering layer is adopted to fill in the filter to carry out filtering; after the filtering layer is adopted to remove manganese to reach the saturation state, a chlorine dioxide solution is adopted to carry out regeneration, and then a treatment is performed on the residual liquid. The method of the present invention has characteristics of simple process, less used equipment, low investment, good manganese removal effect, and high efficiency, and can be widely applicable for purification treatments of various manganese-containing groundwater.

Description

Technical field: [0001] The invention belongs to the technical field of groundwater purification treatment, and relates to a process for removing manganese from groundwater containing manganese through chemical and physical processes using modified quartz sand as a filter material, in particular to a process method for removing manganese from groundwater. Background technique: [0002] There are many types of impurities in natural water, and the composition and quantity of various impurities in the water in different regions are not the same; the distribution of manganese-containing groundwater is very extensive, and the quality of manganese-containing water has a great impact on industrial production and domestic drinking. Therefore, the removal of manganese in groundwater containing manganese has been paid attention to by all aspects. At present, the methods to remove the manganese content in groundwater mainly include: [0003] (1) Natural oxidation technology for manganese rem...

AI Technical Summary

Problems solved by technology

That is, the process of forming a manganese oxide active layer on the surface of the filter material and growing a sufficient amount of manganese oxidizing microorganisms is called the "filter layer maturity period"; therefore, the biological manganese removal technology also has the problem of a long filter material maturity period.

At the same time, because the oxidation mechanism and physiological characteristics of manganese removal bacteria are still not completely clear, there is still a lack of complete theoretical guidance for the inoculation and cultivation process of the biological filter layer. The report of the maturity period of the microbial manganese removal filter is from 1 month to 8 months month

And there is a lack of design data and design parameters such as inoculation process, inoculation volume, and inoculation type.

[0004] In view of the problems existing in the existing manganese removal technology, seek to design a new process route and method to completely solve the problems of filter maturation and manganese removal stability, so that the manganese removal process has the characteristics of simple operation and easy management. valuable research content

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