Mine gushing water treatment device

Abstract

The utility model discloses a mine gushing water treatment device which comprises a regulating tank, an alkali reaction tank, a coagulation tank, a flocculation tank, a sedimentation tank and an acid reaction tank which are arranged in sequence, according to the mine gushing water treatment device, the regulating tank, the alkali reaction tank, the coagulation tank, the flocculation tank, the sedimentation tank and the acid reaction tank are arranged, mine gushing water is treated to reach the discharge standard by using the most economical and applicable method, on one hand, the environmental pollution can be reduced, and on the other hand, the environmental pollution can be reduced; on the other hand, the water pollutant treatment cost is reduced for enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a mine water inrush treatment device. Background Art

[0002] At present, the mine water is collected into the water tank at the bottom of the mine by gravity flow or graded drainage, and then discharged to the ground for treatment by the mine main drainage pump, which not only wastes precious water resources, but also increases the treatment cost of mine water. Since the mine water gushes out along the rock (coal) cracks under the stress of the original rock (coal), it is not polluted, so the water quality is good and can be used directly without treatment. However, once the mine water is collected into the water tank with the industrial wastewater in the mining process of the mine, it will cause secondary pollution and increase the treatment cost of the mine water.

[0003] Mine water is an important component of coal mine wastewater. Its water quality is relatively simple, with low organic matter concentration, mostly suspended matter and salt. The main pollutants are iron, manganese, fluorine, etc. If these pollutants are discharged directly into the nature, it will cause pollution, especially the impact on groundwater. Manganese in groundwater often exists in the form of divalent manganese. The speed at which divalent manganese is dissolved and oxidized in water is very slow, so it generally does not make the water turbid quickly, but after it precipitates, it can increase the chromaticity of the water. Its coloring ability is several times higher than that of iron. It has a strong ability to pollute clothes and sanitary utensils. When the manganese content exceeds 0.3 mg / l, it can cause water to have a peculiar smell. When the iron and manganese content in water is too high, it will not only bring inconvenience to life, but also bring many problems to industrial production. For example, iron and manganese are one of the components that generate scale in boiler water. In cooling water, iron adheres to the wall of the heating pipe, which will reduce the heat transfer coefficient of the pipe wall and even block the cooling water pipe. In addition, the continuous growth of iron and manganese bacteria will accelerate the corrosion of metal pipes.

[0004] Iron in groundwater often exists in the form of ferrous iron. Due to the high solubility of ferrous iron in water, the iron-containing groundwater just extracted from the aquifer is still clear and transparent. However, once it comes into contact with air, the ferrous iron in the water is oxidized by the oxygen in the air to form ferric hydroxide that is insoluble in water and precipitates from the water. Therefore, although the iron in groundwater has no effect on human health, it cannot exceed a certain content. For example, when the iron content in water is greater than 0.3 mg / l, the water becomes turbid, and when it exceeds 1 mg / l, the water has an iron smell. In particular, when there is excessive iron in the water, rust spots can be generated on washed clothes; on clean sanitary utensils, and even on walls and floors that come into contact with water, yellow-brown rust spots can be formed, which brings many inconveniences to daily life. Utility Model Content

[0005] The purpose of the utility model is to provide a mine water inrush treatment device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A mine water treatment device comprises a regulating tank, an alkali reaction tank, a coagulation tank, a flocculation tank, a sedimentation tank, and an acid reaction tank which are arranged in sequence;

[0008] An aeration device is provided in the regulating tank, and a dosing device is provided in the alkali reaction tank, the coagulation tank and the flocculation tank.

[0009] As a further solution of the utility model: a sludge pipe is connected to the bottom of the sedimentation tank, and one end of the sludge pipe away from the sedimentation tank is connected to a sludge thickening tank.

[0010] As a further solution of the utility model: a lifting pump is provided in the regulating tank, a water inlet end of the lifting pump is located at the bottom of the regulating tank, and a water outlet end of the lifting pump is connected to the alkali reaction tank through a pipeline.

[0011] As a further solution of the utility model: a first dosing device is provided in the alkali reaction tank, and the first dosing device is a limestone dosing device.

[0012] As a further solution of the utility model: a second dosing device is provided in the coagulation tank, and the second dosing device is a PAM agent dosing device.

[0013] As a further solution of the utility model: the water inlet of the flocculation tank is provided with a third dosing device, and the third dosing device is a sodium carbonate dosing device.

[0014] As a further solution of the utility model: the upper part of the sedimentation tank is connected with a clear liquid pipeline, and the other end of the clear liquid pipeline is connected with the acid reaction tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model adopts an aeration mixing device in the regulating tank, which can fully mix the incoming water for homogenization, and on the other hand, Fe in the wastewater can be removed by aeration. 2+ Ion oxidation to Fe 3+ Ions; Because the pH of the influent is 4-5, aeration under this condition will basically not oxidize Mn 2+ Ion, manganese is still in the form of Mn 2+ The presence of ions creates favorable conditions for subsequent addition and subtraction reactions, coagulation reactions and flocculation reactions.

[0017] 2. This utility model adopts the method of adding Na at the inlet of the flocculation tank. 2 CO 3 , let CO3 2- Ions and Ca 2+ The ions undergo precipitation reaction and the sludge-water mixture in the coagulation reaction tank undergoes flocculation reaction in the flocculation reaction tank. This can form calcium carbonate precipitation with the added calcium ions to achieve co-precipitation and avoid the introduction of secondary pollutants caused by calcium. At the same time, the unreacted Fe 3+ Ion, Mn 2+ The ions react again, Fe 2 (CO 3 ) 3 、MnCO 3 The precipitate is generated to further remove pollutants such as iron and manganese.

[0018] 3. The utility model sets a coagulation tank before the flocculation tank and adds PAC into the coagulation tank for coagulation reaction, so as to convert fine sediment into large sediment particles, which is helpful for subsequent flocculation reaction and solid-liquid separation.

[0019] 4. The utility model sets up a regulating tank, an alkali reaction tank, a coagulation tank, a flocculation tank, a sedimentation tank, and an acid reaction tank to treat the mine water in the most economical and applicable way to meet the above-mentioned emission standards. On the one hand, it can reduce environmental pollution, and on the other hand, it can reduce the cost of water pollutant treatment for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the process of this embodiment;

[0021] In the figure: 1-regulating tank, 2-alkaline reaction tank, 21-first dosing device, 3-coagulation tank, 31-second dosing device, 4-flocculation tank, 41-third dosing device, 5-sedimentation tank, 6-acid reaction tank, 7-sludge thickening tank, 8-clear liquid pipeline, 9-sludge pipeline. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1In an embodiment of the utility model, a mine water inrush treatment device includes a regulating tank 1, an alkali reaction tank 2, a coagulation tank 3, a flocculation tank 4, a sedimentation tank 5, and an acid reaction tank 6 arranged in sequence. The upper part of the sedimentation tank 5 is connected to a clear liquid pipeline 8, and the other end of the clear liquid pipeline 8 is connected to the acid reaction tank 6. The bottom of the sedimentation tank 5 is connected to a sludge pipeline 9, and the end of the sludge pipeline 9 away from the sedimentation tank 5 is connected to a sludge thickening tank 7.

[0024] An aeration device is provided in the regulating tank 1, and a lifting pump is provided in the regulating tank 1. The water inlet end of the lifting pump is located at the bottom of the regulating tank, and the water outlet end of the lifting pump is connected with the alkali reaction tank 2 through a pipeline. The alkali reaction tank 2, the coagulation tank 3, and the flocculation tank 4 are all provided with dosing devices. In this embodiment, a first dosing device 21 is provided in the alkali reaction tank 2, and the first dosing device 21 is a limestone dosing device. A second dosing device 31 is provided in the coagulation tank 3, and the second dosing device 31 is a PAM agent dosing device. A third dosing device 41 is provided at the water inlet of the flocculation tank 4, and the third dosing device 41 is a sodium carbonate dosing device.

[0025] When the utility model is used, the mine water is introduced into the regulating tank 1 through the pipeline, and an aeration mixing device is arranged in the regulating tank 1, which can fully mix the incoming water for homogenization, and can remove Fe in the wastewater by aeration. 2+ Ion oxidation to Fe 3+ Ions; Because the pH of the influent is 4-5, aeration under this condition will basically not oxidize Mn2+ ions, and manganese still remains in the form of Mn 2+ The presence of ions creates favorable conditions for subsequent addition and subtraction reactions, coagulation reactions and flocculation reactions; a wastewater lifting pump is provided in the regulating tank 1, through which the wastewater is pumped into the alkaline reaction tank 2, and lime or sodium hydroxide is added to the alkaline reaction tank 2 to adjust the pH for reaction. Lime is added to the alkaline reaction tank 2 according to the quality of the incoming water to raise the pH from 4.5 to 10-11, which can simultaneously remove Fe 3+ Ion, Mn 2+ Ion, F - The ions react to form Fe(OH) 3 、Mn(OH) 2 , CaF 2The precipitate is beneficial to the subsequent solid-liquid separation; after the reaction is completed, the wastewater flows into the coagulation tank 3 for coagulation reaction, and a coagulant is added at the same time. Because the formed precipitate particles are small and fine, directly adding PAM for flocculation reaction will cause incomplete solid-liquid separation in the sedimentation tank and cause turbid water. Therefore, the present embodiment sets up a coagulation tank 3, and PAM is added to the coagulation tank 3 for coagulation reaction, so that the fine precipitate is turned into large precipitate particles, which is helpful for the subsequent flocculation reaction and solid-liquid separation; the coagulated wastewater enters the flocculation tank 4, and a flocculant is added for flocculation reaction; after the flocculation reaction is completed, it enters the sedimentation tank 5 for mud-water separation, the sludge enters the sludge thickening tank 7, and the clear liquid enters the acid reaction tank 6 through the clear liquid pipeline 8 for reverse adjustment, and is discharged from the system after the pH reaches the standard.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mine water treatment device, characterized in that: It comprises a regulating tank (1), an alkali reaction tank (2), a coagulation tank (3), a flocculation tank (4), a sedimentation tank (5), and an acid reaction tank (6) which are arranged in sequence; The regulating tank (1) is provided with an aeration device, and the alkali reaction tank (2), the coagulation tank (3) and the flocculation tank (4) are all provided with a dosing device.

2. A mine water treatment device according to claim 1, characterized in that: The bottom of the sedimentation tank (5) is connected to a sludge pipeline (9), and one end of the sludge pipeline (9) away from the sedimentation tank (5) is connected to a sludge concentration tank (7).

3. A mine water treatment device according to claim 1, characterized in that: A lifting pump is provided in the regulating tank (1), the water inlet end of the lifting pump is located at the bottom of the regulating tank, and the water outlet end of the lifting pump is connected to the alkali reaction tank (2) through a pipeline.

4. A mine water treatment device according to claim 1, characterized in that: A first dosing device (21) is provided in the alkali reaction tank (2), and the first dosing device (21) is a limestone dosing device.

5. A mine water treatment device according to claim 1, characterized in that: A second dosing device (31) is provided in the coagulation tank (3), and the second dosing device (31) is a PAM agent dosing device.

6. A mine water treatment device according to claim 1, characterized in that: The water inlet of the flocculation tank (4) is provided with a third dosing device (41), and the third dosing device (41) is a sodium carbonate dosing device.

7. A mine water inrush treatment device according to claim 1, characterized in that: The upper part of the sedimentation tank (5) is connected to a clear liquid pipeline (8), and the other end of the clear liquid pipeline (8) is connected to the acid reaction tank (6).

Images