Filtering material, filtering unit and filtering system for manganese ion-containing sewage treatment

Abstract

The invention belongs to the technical field of sewage treatment, and provides a filter material, a filter unit and a filter system.According to the filter material, the filter unit and the filter system for manganese ion-containing sewage treatment, a filter plate is provided with water through holes in the filter direction so that manganese-containing sewage can smoothly pass through the filter plate, and the filter plate is provided with water through holes in the filter direction; meanwhile, sufficient contact of sewage and filter plate materials is guaranteed, the forming direction of the water through holes is consistent with the sewage flowing direction, and sewage flowing resistance can be reduced. Through the synergistic effect of the porous structure of the adsorption foam concrete and various adsorption materials, synchronous and efficient removal of manganese ions and sulfate ions is realized, and the limitation of single pollutant treatment in the prior art is solved; due to the loose porous structure and reasonable raw material ratio, the adsorption efficiency is ensured, and the problem of secondary pollution caused by a chemical precipitation method is avoided; the material of the filter plate has adsorbability and structural strength, and is suitable for complex terrains and working conditions of multi-mountain mineral areas.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment, and particularly relates to a filter material for treating manganese ion-containing sewage, a filter unit and a filter system. BACKGROUND

[0002] Mining activities of metal mines often cause water pollution problems, which are particularly prominent in mountainous mineral-rich areas. The terrain of such areas is complex, and the hydrological system is sensitive. The sewage produced in the process of mining metal mines is easy to spread through surface runoff, underground infiltration and other ways, causing persistent pollution threat to the surrounding surface water, drinking water sources and agricultural irrigation water.

[0003] The core pollutants of the above-mentioned sewage are heavy metal ions and high-concentration sulfate ions, among which the harm of manganese ions is particularly significant. On the one hand, the synergy of manganese ions and sulfate ions can destroy the integrity of the water ecosystem: high-concentration sulfate ions can easily lead to water acidification, combined with the biological toxicity of manganese ions, which can cause large-scale death of aquatic organisms and destroy the biological chain of water; on the other hand, after the sewage penetrates into the soil, it can cause soil acidification and hardening, reduce soil fertility, and then affect the growth of crops, and manganese ions are easy to enrich in crops, forming a food chain transmission risk. More importantly, if the contaminated water enters the drinking water system, manganese ions will accumulate through human metabolism, and long-term intake may damage the nervous system, digestive system and other systems, posing a potential and irreversible harm to human health; at the same time, high-concentration sulfate ions can affect the taste of drinking water, and may be converted into sulfide under certain conditions, further aggravating the degree of water pollution.

[0004] At present, the treatment technology for metal mine exploitation sewage mainly focuses on the removal of single pollutant: for example, chemical precipitation method is used to remove heavy metal ions, biological reduction method or membrane separation method is used to treat sulfate ions, etc. However, for the complex sewage system coexisting with manganese ions and sulfate ions, the existing technology has obvious limitations: chemical precipitation method is easy to produce a large amount of heavy metal-containing sludge, which is difficult to dispose and easy to cause secondary pollution; biological treatment method has strict requirements on environmental conditions such as pH value and temperature, and has poor stability under complex working conditions in mountainous mineral areas; membrane separation method has problems such as serious membrane pollution, high operation cost and difficulty in large-scale application. In summary, the existing technology lacks a treatment method that can efficiently and simultaneously remove manganese ions and sulfate ions, adapt to complex working conditions, and has economic and environmental benefits. SUMMARY

[0005] The application provides a filter material for treating manganese ion-containing sewage, a filter unit and a filter system, which aims to solve the technical problems proposed in the background.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the application is: In a first aspect, embodiments of the present invention provide a filter material for wastewater treatment containing manganese ions, which is a filter plate with a plate-like structure, wherein the filter plate has multiple water passage holes along the filtration direction; the filter plate is made of adsorbed foam concrete. The raw material components of the adsorbent foam concrete include adsorbent material and cement, and the mass ratio of the adsorbent material to the cement is (10~15):100. The adsorbent material comprises the following raw material components in parts by weight: 0.3-0.5 parts of composite soapberry powder foaming agent, 5-8 parts of dolomite powder, 8-10 parts of manganese iron filter material, 7-9 parts of bentonite, 8-10 parts of diatomite, 10-12 parts of tourmaline, 12-15 parts of Bian stone, 5-7 parts of red stone, 3-5 parts of coral stone, 3-5 parts of illite, and 0.2-0.8 parts of yew leaf powder; The manganese iron filter material contains 25% to 35% manganese dioxide.

[0007] Specifically, the adsorbent material and cement are mixed evenly, and then water is added to obtain adsorbent foam concrete. This foamed concrete is then cut and polished to obtain the filter plate. Preferably, the water-cement ratio is 6:(4~5). It should be noted that the water-cement ratio refers to the mass ratio of water to cement. The cement is PO425 silicate cement.

[0008] The pore size of the adsorbent foam concrete is 0.2~0.5mm, and the bulk density is 180~250kg / m³. 3 .

[0009] Compared to existing technologies, the filter plate provided by this invention utilizes a composite soapberry powder foaming agent that generates uniform, microscopic pores during concrete preparation. These pores, combined with rigid aggregates such as dolomite powder, bianstone, and coral stone, form a continuous porous structure, increasing the concrete's specific surface area and reducing ion diffusion resistance. This allows manganese and sulfate ions to rapidly penetrate the adsorption sites within the adsorption material. The manganese-iron filter media, as the core adsorption component, oxidizes manganese ions into insoluble manganese dioxide. The redstone in the adsorption material, working synergistically with the manganese-iron filter media, enhances the oxidation conversion rate of manganese ions. Furthermore, both components synergistically improve the adsorption capacity for sulfate ions. During the oxidation process of the manganese-iron filter media, bentonite, diatomite, and illite, through synergistic effects, further enhance the adsorption of manganese dioxide, preventing secondary release. Simultaneously, the cations in bentonite, diatomite, and illite exchange with sulfate ions in the wastewater, thereby reducing the sulfate ion content in the water. In addition to the above-mentioned substances, the removal rate of manganese ions in wastewater by other substances in the adsorption material can also be improved; tourmaline can regulate the internal environment of concrete, thereby improving the adsorption and oxidation of manganese ions by other components, and can also improve the exchange adsorption effect of sulfate ions by other minerals. At the same time, the porous structure of tourmaline further increases the adsorption sites, improving the removal effect of sulfate and manganese ions by the adsorption material. In addition, the negative charge released by tourmaline further neutralizes manganese ions in wastewater, improving the adsorption effect; while the active groups such as hydroxyl or carboxyl groups in yew leaf powder can inhibit the agglomeration of other inorganic materials, ensuring that the adsorption sites of each component are fully exposed, thereby improving the treatment effect; coral stone can release calcium ions, which form calcium sulfate precipitate with sulfate ions, and then improve the removal rate of sulfate ions to a certain extent through synergistic adsorption with other components in the adsorption material; dolomite powder can enhance the density of concrete, thereby ensuring the stability of the porous structure of concrete and improving its service life.

[0010] Preferably, the fineness of the dolomite powder is 200-800 mesh.

[0011] Preferably, the fineness of the manganese-iron filter material is 800~1000 mesh.

[0012] Preferably, the fineness of the bentonite is 1500~2000 mesh.

[0013] Preferably, the fineness of the diatomaceous earth is 800-1000 mesh.

[0014] Preferably, the tourmaline has a fineness of 1200-1500 mesh.

[0015] Preferably, the fineness of the Bian stone is 1000~1500 mesh.

[0016] Preferably, the fineness of the red stone is 1200~1500 mesh.

[0017] For example, the red stone is Gongga red stone.

[0018] Preferably, the fineness of the coral stone is 1000-1500 mesh.

[0019] Preferably, the illite has a fineness of 1000-1200 mesh.

[0020] Preferably, the fineness of the yew leaf powder is 800-1000 mesh.

[0021] In conjunction with the first aspect, in one possible implementation of the filter material for wastewater treatment containing manganese ions provided by the present invention, the size of the water passage hole is 0.5~0.8mm.

[0022] In conjunction with the first aspect, in one possible implementation of the filter material for manganese ion-containing wastewater treatment provided by the present invention, the water passage holes are arranged in multiple rows, and adjacent rows of water passage holes are staggered. In conjunction with the first aspect, in one possible implementation of the manganese ion-containing wastewater treatment filter material provided by the present invention, the composite soapberry powder foaming agent comprises the following components in the following mass percentages: 85%~90% animal protein foaming agent and 10%~15% soapberry powder, wherein the fineness of the soapberry powder is 580~620 mesh.

[0023] In conjunction with the first aspect, in one possible implementation of the filter material for wastewater treatment containing manganese ions provided by the present invention, the thickness of the filter plate along the filtration direction is 7~10cm.

[0024] Secondly, embodiments of the present invention provide a filtration unit for treating wastewater containing manganese ions, comprising: The tank has an inlet at one end and an outlet at the other. Multiple manganese-containing filter media for wastewater treatment are spaced apart inside the box along the filtration direction.

[0025] In conjunction with the second aspect, in one possible implementation of the filter unit for treating wastewater containing manganese ions provided by the present invention, the distance between two adjacent filter plates is 30-50 cm.

[0026] In conjunction with the second aspect, in one possible implementation of the filtration unit for treating manganese-containing wastewater provided by the present invention, an adsorption layer of a predetermined height is provided in the interval area between two adjacent filter plates.

[0027] In conjunction with the second aspect, in one possible implementation of the filter unit for treating wastewater containing manganese ions provided by the present invention, the length of the housing is 1.8~2.4m, the height is 50~70cm, and the width is 1.4~2.8m.

[0028] Thirdly, embodiments of the present invention provide a filtration system for treating wastewater containing manganese ions, characterized in that it includes the aforementioned filtration unit.

[0029] The beneficial effects of the filter media, filter unit, and filter system for treating manganese-containing wastewater provided by this invention are as follows: Compared with the prior art, the filter media, filter unit, and filter system for treating manganese-containing wastewater provided by this invention have water passage holes along the filtration direction to ensure that manganese-containing wastewater can flow smoothly through the filter plate while ensuring sufficient contact between the wastewater and the filter plate material. The direction of the water passage holes is consistent with the direction of wastewater flow, which can reduce the resistance to wastewater flow. Furthermore, through the porous structure of the adsorbed foam concrete and the synergistic effect of multiple adsorbent materials, the simultaneous and efficient removal of manganese ions and sulfate ions is achieved, overcoming the limitations of single pollutant treatment in existing technologies. The loose porous structure and reasonable raw material ratio ensure adsorption efficiency while avoiding the secondary pollution problem caused by chemical precipitation methods. The filter plate material has both adsorption and structural strength, adapting to the complex terrain and working conditions in mountainous mining areas, solving the problems of harsh environmental requirements and poor stability of biological treatment methods. In addition, the raw material cost is low and no complex operation and maintenance are required, solving the problems of high cost and difficulty in large-scale application of membrane separation methods, thus combining economic efficiency and environmental friendliness. Attached Figure Description

[0030] Figure 1 A three-dimensional structural schematic diagram of a filtration unit for treating wastewater containing manganese ions provided in an embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of a filtration unit for treating wastewater containing manganese ions provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures: 10. Filter plate; 11. Water passage hole; 20. Box body; 21. Water inlet end; 22. Water outlet; 23. Adsorption layer. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0039] Please refer to the following: Figures 1 to 2 The filter material for treating wastewater containing manganese ions provided by the present invention will now be described. The filter material for treating wastewater containing manganese ions is a filter plate 10 with a plate-like structure. The filter plate 10 has a plurality of water passage holes 11 along the filtration direction. The material of the filter plate 10 is adsorbed foam concrete.

[0040] The raw material components of adsorbent foam concrete include adsorbent material and cement, with a mass ratio of adsorbent material to cement of (10~15):100.

[0041] The adsorbent material comprises the following raw material components in parts by weight: 0.3-0.5 parts of composite soapberry powder foaming agent, 5-8 parts of dolomite powder, 8-10 parts of manganese-iron filter media, 7-9 parts of bentonite, 8-10 parts of diatomite, 10-12 parts of tourmaline, 12-15 parts of Bian stone, 5-7 parts of red stone, 3-5 parts of coral stone, 3-5 parts of illite, and 0.2-0.8 parts of yew leaf powder; the manganese dioxide content in the manganese-iron filter media is 25%-35%.

[0042] The beneficial effects of the filter material for treating manganese-containing wastewater provided by the present invention are as follows: Compared with the prior art, the filter material for treating manganese-containing wastewater provided by the present invention has water passage holes 11 opened along the filtration direction in order to enable manganese-containing wastewater to flow smoothly through the filter plate 10, while ensuring that the wastewater and the filter plate 10 material are in full contact. The opening direction of the water passage holes 11 is consistent with the wastewater flow direction, which can reduce the resistance to wastewater flow.

[0043] By utilizing the porous structure of the adsorbed foam concrete and the synergistic effect of multiple adsorbent materials, the simultaneous and efficient removal of manganese ions and sulfate ions was achieved, overcoming the limitations of existing technologies in treating single pollutants.

[0044] The loose and porous structure and reasonable raw material ratio ensure adsorption efficiency and avoid the problem of secondary pollution caused by chemical precipitation. The filter plate 10 material has both adsorption and structural strength, which can adapt to the complex terrain and working conditions in mountainous mining areas, and solve the problems of harsh environmental conditions and poor stability of biological treatment methods.

[0045] In addition, the raw material cost is low and no complicated operation and maintenance are required, which solves the problems of high cost and difficulty in large-scale application of membrane separation method, and is both economical and environmentally friendly.

[0046] like Figure 1 As shown, in a specific embodiment of the filter material for wastewater treatment containing manganese ions provided in this invention, the size of the water passage 11 is 0.5~0.8mm.

[0047] It should be noted that in this embodiment, the size of the water passage 11 is limited to 0.5~0.8mm, which is based on a comprehensive consideration of the particle size of pollutants in the wastewater and the adsorption performance of the filter plate 10. This size range of water passage 11 can achieve a synergistic effect of physical interception and adsorption: on the one hand, it can effectively intercept suspended solid particles in the wastewater, preventing particles from clogging the internal pores of the filter plate 10 and ensuring the long-term stable operation of the filter plate 10; on the other hand, it avoids excessive wastewater flow resistance due to excessively small pore size, thus avoiding increased subsequent power transportation costs, and also avoids insufficient contact between the wastewater and the filter plate 10 material due to excessively large pore size, thus affecting adsorption efficiency. Experimental verification shows that a pore size of 0.5~0.8mm can balance filtration flux and purification effect when treating wastewater from metal mining, and is suitable for manganese-containing wastewater with different pollution levels.

[0048] In this embodiment, the water passage holes 11 of a specific size can effectively intercept suspended particulate matter in wastewater, reduce the accumulation of pollutants inside the filter plate 10, extend the service life of the filter plate 10, and reduce operation and maintenance costs. Furthermore, it balances wastewater flow rate with adsorption contact efficiency, ensuring smooth wastewater passage while guaranteeing sufficient contact between manganese ions and sulfate ions and the adsorption material of the filter plate 10, thus improving the overall purification effect. In addition, it avoids the problem of increased operating costs due to improper pore size, further improving the economic efficiency of the technology and better meeting the needs of large-scale wastewater treatment in mountainous mining areas.

[0049] like Figure 1 As shown, in a specific embodiment of the filter material for wastewater treatment containing manganese ions provided in this invention, the water passage holes 11 are arranged in multiple rows, and adjacent rows of water passage holes 11 are staggered.

[0050] Specifically, the number of rows of water passage holes 11 is set according to the height of the filter plate 10 and the water flow requirements, and the distance between two adjacent water passage holes 11 is 2~3cm.

[0051] It should be noted that in this embodiment, the water passage holes 11 are arranged in multiple rows in a staggered manner to make the holes denser, so that the sewage can come into more full contact with the adsorption material of the filter plate 10; at the same time, the minimum wall thickness between two holes is ensured to guarantee the structural strength.

[0052] In a specific embodiment of the filter material for wastewater treatment containing manganese ions provided in this invention, the composite soapberry powder foaming agent includes the following components in the following mass percentages: 85%~90% animal protein foaming agent and 10%~15% soapberry powder, wherein the fineness of the soapberry powder is 580~620 mesh.

[0053] Further preferred, the composite soapberry powder foaming agent is HT composite foaming agent, purchased from Henan Huatai New Material Technology Co., Ltd.

[0054] In one specific embodiment of the filter material for wastewater treatment containing manganese ions provided in this invention, the thickness of the filter plate 10 along the filtration direction is 7~10cm.

[0055] It should be noted that in this embodiment, the thickness of the filter plate 10 along the filtration direction is limited to 7-10 cm, which comprehensively considers the adsorption capacity, wastewater flow resistance, and structural stability of the filter plate 10. If the thickness is too small, the content of adsorbent material will be insufficient, resulting in limited adsorption capacity and making it impossible to achieve efficient and deep removal of manganese ions and sulfate ions. If the thickness is too large, it will increase the wastewater flow resistance, leading to increased power transportation costs, as well as increasing the cost and weight of the raw materials used to prepare the filter plate 10, making it inconvenient for transportation and installation. The thickness range of 7-10 cm has been verified through extensive experiments, which can minimize operating and preparation costs while ensuring efficient adsorption, making it suitable for practical application scenarios in mountainous and mineral-rich areas.

[0056] In this embodiment, the specific thickness ensures that the filter plate 10 has sufficient adsorption capacity, enabling deep removal of manganese and sulfate ions, ensuring that the treated wastewater meets discharge standards, and effectively protecting surface water bodies, drinking water sources, and agricultural irrigation water. Furthermore, it balances wastewater flow resistance with adsorption effect, avoiding increased operating costs due to improper thickness and improving the economics of the technology. In addition, the reasonable thickness makes the filter plate 10 of moderate weight, facilitating transportation and on-site installation, and adapting to the complex terrain and inconvenient construction conditions in mountainous mining areas; fourthly, the sufficient thickness improves the structural stability and service life of the filter plate 10, reducing maintenance frequency and costs.

[0057] Based on the same inventive concept, such as Figure 1 and Figure 2As shown, this embodiment of the invention provides a filter unit for treating wastewater containing manganese ions, a housing 20, one end of which is an inlet end 21 and the other end is an outlet end 22; multiple filter media for treating wastewater containing manganese ions are spaced apart in the housing 20 along the filtration direction.

[0058] It should be noted that in this embodiment, the housing 20 is designed to provide a stable installation and working environment for the filter plates 10. The design of the inlet end 21 and the outlet end 22 allows the wastewater to flow in a fixed direction, ensuring that the wastewater is treated sequentially through each filter plate 10. The multiple filter plates 10 are spaced apart along the filtration direction to form a multi-stage filtration structure, achieving step-by-step purification of the wastewater. Each filter plate 10 can adsorb and remove manganese and sulfate ions from the wastewater, improving the overall purification effect. The material of the housing 20 can be selected based on actual working conditions, choosing a corrosion-resistant and high-strength material to adapt to the corrosive environment of metal mining wastewater. The spaced arrangement of the multiple filter plates 10 also facilitates the later maintenance and replacement of individual filter plates 10 without requiring a complete shutdown, improving the ease of operation and maintenance of the equipment.

[0059] In this embodiment, the multi-stage filtration structure achieves progressive deep purification of wastewater, significantly improving the removal efficiency of manganese ions and sulfate ions, solving the problem of poor treatment effect of existing technologies, and effectively alleviating water pollution and soil acidification problems.

[0060] Furthermore, the housing 20 provides a stable working environment for the filter plates 10, preventing them from being affected by external environmental interference and improving the stability of the equipment under complex working conditions in mountainous mining areas. In addition, the spaced-out filter plates 10 facilitate individual maintenance and replacement, reducing the difficulty and cost of operation and maintenance, and improving the practicality and service life of the equipment.

[0061] The overall structural design is reasonable, and the sewage flow path is clear, avoiding sewage stagnation and short-circuiting, thus ensuring the stability and uniformity of the treatment effect. The number of filter plates 10 can be adjusted according to the degree of sewage pollution and treatment volume requirements, improving the adaptability of the equipment.

[0062] like Figure 2 As shown, in a specific embodiment of the filter unit for treating wastewater containing manganese ions provided in this invention, the distance between two adjacent filter plates 10 is 30~50cm.

[0063] It should be noted that in this embodiment, the interval between two adjacent filter plates 10 is limited to 30-50cm, which is based on a comprehensive consideration of the diffusion and reaction time of sewage between the filter plates 10. This interval ensures that after sewage passes through the previous filter plate 10, it can diffuse sufficiently within the interval area, allowing the sewage to be evenly distributed and enter the next filter plate 10, avoiding local overload adsorption of the next filter plate 10 due to uneven sewage distribution. At the same time, the 30-50cm interval provides sufficient time for the reaction between pollutants in the sewage and the adsorption material of the filter plate 10, improving the adsorption and removal efficiency, and also avoids excessive sewage flow resistance due to too small an interval, or excessive equipment size and space occupation due to too large an interval.

[0064] In this embodiment, by setting intervals, sufficient diffusion and reaction time of wastewater between filter plates 10 are ensured, the adsorption efficiency of each filter plate 10 is improved, the overall purification effect is further enhanced, and manganese ions and sulfate ions are efficiently removed.

[0065] Furthermore, it avoids localized overload and wear of the filter plate 10 caused by uneven sewage distribution, extending the service life of the filter plate 10 and reducing operation and maintenance costs. In addition, the reasonable spacing balances the sewage flow resistance and equipment volume, avoiding the problem of increased operating costs due to too small a spacing or excessive site occupation due to too large a spacing, making it suitable for the limited site conditions in mountainous mining areas.

[0066] In a specific embodiment of the filtration unit for treating wastewater containing manganese ions provided in this invention, an adsorption layer 23 of a preset height is provided in the interval area between two adjacent filter plates 10.

[0067] Specifically, the filling height of the adsorption material is set according to actual needs, usually 3~10cm, and the material of the adsorption layer 23 can be manganese iron filter material, Gongga red stone, Bian stone, illite, etc.

[0068] It should be noted that in this embodiment, the adsorption layer 23 is provided in the interval area between adjacent filter plates 10 to support the filter plates 10 while further improving the adsorption capacity and purification effect of the filtration unit. The filling adsorption material can be the same as or complementary to the material of the filter plates 10, forming a dual adsorption structure of "filter plate 10 + filling adsorption material". The preset height setting needs to be combined with the interval distance and sewage treatment requirements to ensure that the filling adsorption material can fully contact the sewage without excessively increasing the sewage flow resistance. The filling adsorption material can be granular or block-shaped, which facilitates later replacement and replenishment, further improving the operation and maintenance flexibility of the equipment.

[0069] In one specific embodiment of the filter unit for treating wastewater containing manganese ions provided in this invention, the length of the housing 20 is 1.8~2.4m, the height is 50~70cm, and the width is 1.4~2.8m.

[0070] It should be noted that the size range of the housing 20 in this embodiment is determined by comprehensively considering the number of filter plates 10, their spacing, the wastewater treatment capacity, and on-site installation conditions. A length of 1.8~2.4m can accommodate the spaced installation of multiple filter plates 10, ensuring the realization of a multi-stage filtration structure; a height of 50~70cm ensures sufficient liquid level of wastewater within the housing 20, allowing the wastewater to fully contact the filter plates 10 and the filling adsorbent material, while preventing wastewater overflow due to excessive liquid level; a width of 1.4~2.8m ensures sufficient flow cross-section of wastewater within the housing 20, reducing flow resistance and increasing treatment throughput. This size range of housing 20 facilitates transportation and on-site hoisting, making it suitable for the complex terrain and inconvenient transportation conditions in mountainous mining areas.

[0071] In this embodiment, the reasonable size of the housing 20 can be adapted to the installation of multi-stage filtration structures, ensuring the purification effect and treatment throughput of the filtration unit, and meeting the treatment needs of wastewater from metal mining of different scales.

[0072] The 20-inch container is of moderate size, making it easy to transport and install on site, thus reducing the difficulty and cost of construction in mountainous mining areas.

[0073] Sufficient flow cross-section and liquid level height ensure full contact between wastewater and filter plate 10 and adsorption material, improving adsorption removal efficiency and further enhancing wastewater purification effect.

[0074] Standardized size ranges facilitate mass production, reduce equipment manufacturing costs, and enhance the potential for large-scale application of the technology.

[0075] Based on the same inventive concept, this invention provides a filtration system for treating wastewater containing manganese ions, characterized in that it includes the aforementioned filtration unit.

[0076] It should be noted that in this embodiment, the filtration system is based on the filtration unit and can be flexibly configured according to actual treatment needs: for small and medium-sized mine wastewater, 2 to 3 units can be connected in series; for large mine wastewater, a combination of multiple units in parallel and series can be used; the system can also be equipped with auxiliary facilities such as pretreatment tank (to adjust pH value) and post-disinfection tank to further improve the treatment effect, but the core treatment function is realized by the filtration unit, ensuring that the core advantages of the system (simultaneous removal of manganese ions and sulfate ions, and adaptability to complex working conditions) are not affected.

[0077] Specifically, for multi-stage filtration systems, the size of the filter plate 10 in each stage of the filtration unit gradually decreases to ensure processing efficiency.

[0078] The beneficial effects of the filtration system for treating manganese-containing wastewater provided by this invention are as follows: Compared with the prior art, the filtration system for treating manganese-containing wastewater provided by this invention, through the modular combination of core filtration units, achieves flexible adjustment of treatment scale, adapts to the wastewater treatment needs of mines with different production volumes, and solves the problem that the prior art is difficult to apply on a large scale; the system is based on high-efficiency filter plate 10, inheriting the core advantages of filter plate 10 and filtration units, and can simultaneously remove manganese ions and sulfate ions, avoiding the limitations of single treatment technology; the overall structure is simple, operation and maintenance are convenient, no complex control system is required, the operation threshold is reduced, and it is suitable for the operation and maintenance conditions of multi-mountain mining areas; at the same time, there is no secondary pollution and the operating cost is low, which meets the dual needs of environmental protection and economy, and provides a complete solution for the comprehensive treatment of wastewater from metal mining.

[0079] The following are several specific embodiments and comparative examples of the adsorbed foamed concrete in this invention.

[0080] Cement was purchased from Shijiazhuang Quzhai Cement Co., Ltd.; dolomite powder was purchased from Lingshou County Chenyang Mineral Products Co., Ltd.; manganese iron filter media was purchased from Anyang Wanfeng Industrial Co., Ltd., Henan Province; bentonite was purchased from Zaoyang Haofa Mining Co., Ltd., model MEF-16; Bian stone was purchased from Sishui, Shandong Province; red stone was purchased from Yanzigou, Ganzi, Sichuan Province; coral stone was purchased from Hainan Shengmao Renewable Resources Co., Ltd.; illite was purchased from Yining County Stone Factory, Yili, Xinjiang Province; yew leaf powder was purchased from Jiugongshan Yew Planting Base, Hubei Province; and the compound soapberry powder foaming agent, HT compound foaming agent, was purchased from Henan Huatai New Material Technology Co., Ltd.

[0081] Unless otherwise specified, the raw materials and reagents used in this invention are all conventional commercially available products; unless otherwise specified, the methods used in this invention are all conventional methods in the field.

[0082] Example 1 This embodiment provides an adsorbent foamed concrete, including an adsorbent material and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts manganese iron filter media, 9 parts bentonite, 10 parts diatomite, 10 parts tourmaline, 15 parts Bian stone, 5 parts red stone, 5 parts coral stone, 5 parts illite, and 0.2 parts yew leaf powder. The fineness of dolomite powder is 200-400 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1500-1600 mesh; the fineness of diatomaceous earth is 800-850 mesh; the fineness of tourmaline is 1400-1500 mesh; the fineness of Bian stone is 1200-1300 mesh; the fineness of red stone is 1300-1400 mesh; the fineness of coral stone is 1000-1100 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh. This embodiment also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0083] Example 2 This embodiment provides an adsorbent foamed concrete, including an adsorbent material and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.5 parts foaming agent, 5 parts dolomite powder, 10 parts manganese iron filter media, 7 parts bentonite, 8 parts diatomite, 12 parts tourmaline, 12 parts Bian stone, 7 parts red stone, 3 parts coral stone, 3 parts illite, and 0.5 parts yew leaf powder. The fineness of dolomite powder is 500-600 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1600-1700 mesh; the fineness of diatomaceous earth is 900-1000 mesh; the fineness of tourmaline is 1300-1400 mesh; the fineness of Bian stone is 1300-1400 mesh; the fineness of red stone is 1400-1500 mesh; the fineness of coral stone is 1200-1300 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh. This embodiment also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.4 mm and a bulk density of 220 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 12:100, and the water-cement ratio is 6:4.

[0084] Example 3 This embodiment provides an adsorbent foamed concrete, including an adsorbent material and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.4 parts foaming agent, 6 parts dolomite powder, 10 parts manganese iron filter media, 8 parts bentonite, 9 parts diatomite, 11 parts tourmaline, 13 parts Bian stone, 6 parts red stone, 4 parts coral stone, 4 parts illite, and 0.7 parts yew leaf powder. The fineness of dolomite powder is 600-700 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1800-2000 mesh; the fineness of diatomaceous earth is 900-1000 mesh; the fineness of tourmaline is 1400-1500 mesh; the fineness of Bian stone is 1400-1500 mesh; the fineness of red stone is 1300-1400 mesh; the fineness of coral stone is 1300-1400 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh.

[0085] This embodiment also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.5 mm and a bulk density of 180 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 15:100, and the water-cement ratio is 6:4.

[0086] Comparative Example 1 This comparative example provides an adsorbent foam concrete, which differs from Example 1 in that the manganese iron filter material is replaced with an equal amount of red mud, purchased from Caofeidian Wenfeng Aluminum Co., Ltd. Specifically, this includes adsorption materials and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts red mud, 9 parts bentonite, 10 parts diatomite, 10 parts tourmaline, 15 parts Bian stone, 5 parts red stone, 5 parts coral stone, 5 parts illite, and 0.2 parts yew leaf powder. The fineness of dolomite powder is 200-400 mesh, red mud is 800-1000 mesh, bentonite is 1500-1600 mesh, diatomite is 800-850 mesh, tourmaline is 1400-1500 mesh, Bian stone is 1200-1300 mesh, red stone is 1300-1400 mesh, coral stone is 1000-1100 mesh, illite is 1000-1200 mesh, and yew leaf powder is 800-1000 mesh. This comparative example also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0087] Comparative Example 2 This comparative example provides an adsorbent foam concrete, which differs from Example 1 in that bentonite is replaced with an equal amount of calcium silicate powder, purchased from Shanxi Yuzhu New Material Technology Co., Ltd. Specifically, this includes adsorption materials and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts manganese iron filter media, 9 parts calcium silicate powder, 10 parts diatomite, 10 parts tourmaline, 15 parts Bian stone, 5 parts red stone, 5 parts coral stone, 5 parts illite, and 0.2 parts yew leaf powder. The fineness of dolomite powder is 200-400 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of calcium silicate powder is 1500-1600 mesh; the fineness of diatomaceous earth is 800-850 mesh; the fineness of tourmaline is 1400-1500 mesh; the fineness of Bian stone is 1200-1300 mesh; the fineness of red stone is 1300-1400 mesh; the fineness of coral stone is 1000-1100 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh. This comparative example also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0088] Comparative Example 3 This comparative example provides an adsorbent foam concrete, which differs from Example 1 in that diatomaceous earth is replaced with an equal amount of gypsum stone, purchased from Henan Ginger Stone Trading Co., Ltd. Specifically, this includes adsorption materials and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts manganese iron filter media, 9 parts bentonite, 10 parts ginger stone, 10 parts tourmaline, 15 parts Bian stone, 5 parts red stone, 5 parts coral stone, 5 parts illite, and 0.2 parts yew leaf powder. The fineness of dolomite powder is 200-400 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1500-1600 mesh; the fineness of gypsum is 800-850 mesh; the fineness of tourmaline is 1400-1500 mesh; the fineness of Bian stone is 1200-1300 mesh; the fineness of red stone is 1300-1400 mesh; the fineness of coral stone is 1000-1100 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh. This comparative example also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0089] Comparative Example 4 This comparative example provides an adsorbent foam concrete, which differs from Example 1 in that the tourmaline is replaced with an equal amount of maifanite, purchased from the Manqi Maifanite Production Plant in Inner Mongolia. Specifically, this includes adsorption materials and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts manganese iron filter media, 9 parts bentonite, 10 parts diatomite, 10 parts maifanite, 15 parts Bian stone, 5 parts red stone, 5 parts coral stone, 5 parts illite, and 0.2 parts yew leaf powder. The fineness of dolomite powder is 200-400 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1500-1600 mesh; the fineness of diatomaceous earth is 800-850 mesh; the fineness of maifanite is 1400-1500 mesh; the fineness of Bian stone is 1200-1300 mesh; the fineness of red stone is 1300-1400 mesh; the fineness of coral stone is 1000-1100 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh. This comparative example also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0090] Comparative Example 5 This comparative example provides an adsorbent foam concrete, which differs from Example 1 in that redstone is replaced with an equal amount of garnet, purchased from Gongyi Fuquan Refractory Materials Co., Ltd. Specifically, this includes adsorption materials and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts manganese iron filter media, 9 parts bentonite, 10 parts diatomite, 10 parts tourmaline, 15 parts Bian stone, 5 parts garnet, 5 parts coral stone, 5 parts illite, and 0.2 parts yew leaf powder. The fineness of dolomite powder is 200-400 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1500-1600 mesh; the fineness of diatomaceous earth is 800-850 mesh; the fineness of tourmaline is 1400-1500 mesh; the fineness of Bian stone is 1200-1300 mesh; the fineness of garnet is 1300-1400 mesh; the fineness of coral stone is 1000-1100 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of yew leaf powder is 800-1000 mesh. This comparative example also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0091] Comparative Example 6 This comparative example provides an adsorbent foam concrete, which differs from Example 1 in that the yew leaf powder is replaced with an equal amount of cypress leaf powder, purchased from Lanzhou Huoteles Biotechnology Co., Ltd. Specifically, this includes adsorption materials and PO425 silicate cement; The adsorbent material comprises the following raw material components in parts by weight: 0.3 parts foaming agent, 8 parts dolomite powder, 8 parts manganese iron filter media, 9 parts bentonite, 10 parts diatomite, 10 parts tourmaline, 15 parts Bian stone, 5 parts red stone, 5 parts coral stone, 5 parts illite, and 0.2 parts cypress leaf powder. The fineness of dolomite powder is 200-400 mesh; the manganese dioxide content in manganese-iron filter media is 25%-35%; the fineness of manganese-iron filter media is 800-1000 mesh; the fineness of bentonite is 1500-1600 mesh; the fineness of diatomaceous earth is 800-850 mesh; the fineness of tourmaline is 1400-1500 mesh; the fineness of Bian stone is 1200-1300 mesh; the fineness of red stone is 1300-1400 mesh; the fineness of coral stone is 1000-1100 mesh; the fineness of illite is 1000-1200 mesh; and the fineness of cypress leaf powder is 800-1000 mesh. This comparative example also provides a method for preparing the above-mentioned adsorbent foam concrete, including the following steps: The adsorbent material and cement were mixed evenly, then water was added, and the mixture was stirred using a foamed concrete preparation device to obtain a pore size of 0.2 mm and a bulk density of 250 kg / m³. 3 Adsorbed foamed concrete; The mass ratio of adsorbent material to cement is 10:100, and the water-cement ratio is 6:4.

[0092] Example of effect The removal rates of manganese ions and sulfate ions in wastewater by the adsorbent foam concrete provided in Examples 1-3 and Comparative Examples 1-6 were tested. The specific methods and relevant indicators are as follows: The wastewater was passed through a 6.5m long adsorption foam concrete channel in one go. Before the wastewater was introduced, the manganese ion content was 115mg / L and the sulfate ion content was 466mg / L. The manganese ion content was detected using HJ700-2014 "Determination of 65 Elements in Water by Inductively Coupled Plasma Mass Spectrometry", and the analytical instrument was a NeXION1000G inductively coupled plasma mass spectrometer HYJC-090. The determination of sulfate ions was performed using HJ84-2016 "Determination of Inorganic Anions in Water Quality - Ion Chromatography", and the analytical instrument was Shenghan CICI-D100 ion chromatograph HYJC-180. The specific test results are shown in Table 1: Table 1

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter material for wastewater treatment containing manganese ions, characterized in that, The application discloses a filter plate (10) in a plate structure, which is provided with a plurality of water through holes (11) along a filtering direction; and the filter plate (10) is made of adsorptive foam concrete. The raw material components of the adsorptive foam concrete include adsorptive materials and cement, and the mass ratio of the adsorptive materials to the cement is (10-15):

100. The adsorptive materials include the following raw material components in mass fractions: 0.3-0.5 parts of composite soapberry powder foaming agent, 5-8 parts of dolomite powder, 8-10 parts of manganese-iron filter material, 7-9 parts of bentonite, 8-10 parts of diatomite, 10-12 parts of tourmaline, 12-15 parts of chert, 5-7 parts of red stone, 3-5 parts of coral stone, 3-5 parts of illite and 0.2-0.8 parts of yew leaf powder. The content of manganese dioxide in the manganese-iron filter material is 25%-35%.

2. The filter medium for treating wastewater containing manganese ions according to claim 1, wherein The size of the water through hole (11) is 0.5-0.8 mm.

3. The filter medium for treating wastewater containing manganese ions according to claim 1, wherein The water through holes (11) are arranged in multiple rows, and adjacent two rows of the water through holes (11) are arranged in a staggered mode.

4. The filter medium for treating wastewater containing manganese ions according to claim 1, wherein The composite soapberry powder foaming agent includes the following components in mass percentages: 85%-90% of animal protein foaming agent and 10%-15% of soapberry powder, wherein the fineness of the soapberry powder is 580-620 meshes.

5. The filter material for treating wastewater containing manganese ions according to any one of claims 1 to 4, wherein The thickness of the filter plate (10) along the filtering direction is 7-10 cm.

6. A filtration unit for treating wastewater containing manganese ions, characterized by, The application further discloses a filter unit comprising the filter plate (10). The box body (20) has a length of 1.8-2.4 m, a height of 50-70 cm and a width of 1.4-2.8 m. The application further discloses a filter unit comprising the filter plate (10).

7. The filtration unit for treating wastewater containing manganese ions as claimed in claim 6, wherein The box body (20) has a length of 1.8-2.4 m, a height of 50-70 cm and a width of 1.4-2.8 m.

8. The filtration unit for treating wastewater containing manganese ions as claimed in claim 6 wherein, ​ 9. The filtration unit for treating wastewater containing manganese ions as claimed in claim 6 wherein, ​ 10. A filtration system for treating wastewater containing manganese ions, characterized by, ​

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