Pretreatment device for treating lithium iron phosphate mother liquor

Abstract

The utility model discloses a pretreatment device for treating lithium iron phosphate mother liquor, which relates to the technical field of sewage treatment, and comprises a mixing component with a mixing tank, a sedimentation component and a pipeline control component, and the sedimentation component consists of a sedimentation tank, a partition plate and an inclined pipe; the partition plates are used for dividing the inner cavity of the sedimentation tank into three independent sedimentation bins, and connection or disconnection of the mixing tank and the three sedimentation bins can be achieved through the pipeline control assembly. According to the utility model, the inner cavity of the sedimentation tank is divided into the three independent sedimentation bins by the partition plates, and the pipeline communication and cut-off control of each sedimentation bin and the mixing tank is realized through the structural arrangement of the pipeline control assembly, so that when the inclined pipe in one sedimentation bin is cleaned, other sedimentation bins are kept in normal operation, and the cleaning efficiency is improved. In other words, in the inclined tube cleaning operation, the coagulative precipitation tank does not need to be completely stopped, so that the lithium iron phosphate mother liquor can be continuously treated, and the continuity of wastewater treatment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sewage treatment, and specifically relates to a pretreatment device for treating lithium iron phosphate mother liquor water. BACKGROUND

[0002] In combination with the characteristics of lithium iron phosphate production wastewater, low-concentration cleaning water should be treated through a pretreatment process and a high-multiple reverse osmosis membrane concentration process first, and the reverse osmosis concentrate and high-concentration mother liquor (primary mother liquor and secondary mother liquor) should be mixed for phosphorus removal, and finally, high-purity ammonium sulfate crystal salt meeting the sales standard should be prepared through an evaporation and salt separation method.

[0003] The main function of the pretreatment technology for lithium iron phosphate production wastewater is to treat low-concentration cleaning water. During the treatment process, the low-concentration cleaning water is collected in the adjusting tank, and under the comprehensive action of flocculants, liquid alkali, sodium carbonate and other chemical media, a part of hardness ions and iron ions in the wastewater are removed, and the concentration of the two is reduced, which can effectively prevent the pollution, blockage and scaling of the high-multiple concentration membrane and reduce the factors affecting the treatment effect.

[0004] The inclined pipe of the inclined pipe sedimentation tank is prone to blockage during actual use, and needs to be cleaned regularly. During this process, the coagulation and sedimentation treatment needs to be completely stopped, which is not conducive to the continuous and stable operation of the lithium iron phosphate mother liquor water treatment. Therefore, the pretreatment device for treating lithium iron phosphate mother liquor water is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the above background, and provides a pretreatment device for treating lithium iron phosphate mother liquor water.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pretreatment device for treating lithium iron phosphate mother liquor water, comprising a mixing assembly with a mixing tank and a sedimentation assembly, wherein the sedimentation assembly is composed of a sedimentation tank, a partition plate and an inclined pipe;

[0007] The partition plate is provided with two, and the two partition plates are fixed on the inner side of the sedimentation tank in sequence along the horizontal direction, for separating the inner cavity of the sedimentation tank into three independent sedimentation bins, and the inclined pipe is installed and distributed inside the three sedimentation bins, for realizing the independent flocculation and sedimentation function of the three sedimentation bins.

[0008] A pipeline control assembly is arranged between the mixing tank and the sedimentation tank, and the pipeline control assembly is used for conveying the mixed liquid in the mixing tank to the inside of the three sedimentation bins. The pipeline control assembly can realize the conduction or cutoff of the mixing tank and the three sedimentation bins, so as to facilitate the cleaning operation of the inclined pipe inside the three sedimentation bins.

[0009] As a further scheme of the utility model: the pipeline control assembly includes a first connecting pipe, a second connecting pipe, a third connecting pipe and an electric valve;

[0010] One end of the first connecting pipe, the second connecting pipe and the third connecting pipe is connected with one end of the mixing pool in a conductive manner, and the other end of the first connecting pipe, the second connecting pipe and the third connecting pipe extends through to the inside of the sedimentation pool and is connected with the three sedimentation bins in a conductive manner respectively.

[0011] The electric valve is installed in the middle part of the pipeline of the first connecting pipe, the second connecting pipe and the third connecting pipe respectively, so as to realize the conductive state control of the first connecting pipe, the second connecting pipe and the third connecting pipe.

[0012] As a further scheme of the utility model: three water outlets are formed in the horizontal direction on one side of the top of the sedimentation pool, the three water outlets are communicated with the three sedimentation pools respectively, and the sedimentation pool is fixed with a flow collection groove on the same side of the outer wall of the water outlet.

[0013] As a further scheme of the utility model: a sewage pipe is fixed on one side of the bottom of the sedimentation pool, the sewage pipe is provided with three, and the three sewage pipes penetrate to the inside of the sedimentation pool and are communicated with the three sedimentation pools respectively.

[0014] As a further scheme of the utility model: the mixing assembly further includes a water inlet pipe and a stirring mechanism.

[0015] The water inlet pipe is fixed on the top of one end of the mixing pool away from the sedimentation pool and is communicated with the inner cavity of the mixing pool.

[0016] The stirring mechanism is fixed on the top of the mixing pool through a support and extends to the inside of the mixing pool.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The inner cavity of the sedimentation pool is divided into three independent sedimentation bins through the setting of the partition plate, and the pipeline communication and cut-off control of each sedimentation bin and the mixing pool are realized through the structural setting of the pipeline control assembly, so that the inclined pipe in one sedimentation bin can be cleaned while the other sedimentation bins remain normal operation, that is, the coagulation sedimentation pool does not need to stop running completely in the inclined pipe cleaning operation, so that the lithium iron phosphate mother liquor water can be continuously treated, and the continuity of wastewater treatment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structural schematic view of the utility model;

[0020] Fig. 2 It is another perspective structural schematic view of the utility model;

[0021] Fig. 3The utility model discloses a structure sectional view of the sedimentation assembly.

[0022] In the drawing: 1, mixing assembly; 101, mixing pool; 102, water inlet pipe; 103, stirring mechanism; 2, sedimentation assembly; 201, sedimentation pool; 202, partition plate; 203, inclined pipe; 204, water outlet; 205, collecting groove; 206, sewage pipe; 3, pipeline control assembly; 301, first connecting pipe; 302, second connecting pipe; 303, third connecting pipe; 304, electric valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figs. 1-3 In the embodiments of the utility model, a kind of pretreatment device of lithium iron phosphate mother liquor water is handled, including the mixing assembly 1 with mixing pool 101, sedimentation assembly 2, sedimentation assembly 2 is by sedimentation pool 201, partition plate 202, inclined pipe 203 composition;

[0025] Partition plate 202 is provided with two, two partition plates 202 are sequentially distributed and fixed in the inside of sedimentation pool 201 along horizontal, for separating the inside cavity of sedimentation pool 201 into three independent sedimentation bins, inclined pipe 203 is installed and distributes three sedimentation bin inside, for realizing the independent flocculation sedimentation function of three sedimentation bins;

[0026] Mixing pool 101 and sedimentation pool 201 between being provided with pipeline control assembly 3, pipeline control assembly 3 is used to deliver mixed solution inside mixing pool 101 to three sedimentation bin inside, the conduction or cut-off of mixing pool 101 and three sedimentation bins can be realized by pipeline control assembly 3, so as to facilitate the inclined pipe 203 cleaning operation inside three sedimentation bins;

[0027] Pipeline control assembly 3 includes first connecting pipe 301, second connecting pipe 302, third connecting pipe 303, electric valve 304;

[0028] First connecting pipe 301, second connecting pipe 302, third connecting pipe 303 one end head and one end of mixing pool 101 are connected and conduct, and first connecting pipe 301, second connecting pipe 302, third connecting pipe 303 the other end head extends and is connected and conducts to three sedimentation bin respectively in the inside of sedimentation pool 201;

[0029] Electric valves 304 are installed in the middle of the pipelines of the first connecting pipe 301, the second connecting pipe 302, and the third connecting pipe 303 respectively, and are used to control the conduction status of the first connecting pipe 301, the second connecting pipe 302, and the third connecting pipe 303.

[0030] The mixing component 1 also includes a water inlet pipe 102 and a stirring mechanism 103;

[0031] The inlet pipe 102 is fixed to the top of the end of the mixing tank 101 away from the sedimentation tank 201 and is connected to the inner cavity of the mixing tank 101;

[0032] The stirring mechanism 103 is fixed to the top of the mixing tank 101 by a bracket and extends into the inside of the mixing tank 101.

[0033] In this embodiment, it should be noted that: the lithium iron phosphate mother liquor water and flocculant enter the mixing tank 101 through the water inlet pipe 102. The stirring mechanism 103 is used to mix the lithium iron phosphate mother liquor water and flocculant that enter the mixing tank 101. The stirring mechanism 103 is a conventional structure of the existing coagulation sedimentation tank. Therefore, the stirring mechanism 103 will not be described in detail here.

[0034] During daily operation, the electric valves 304 on the three connecting pipes are all in the open and conducting state, so that the three sedimentation chambers in the sedimentation tank 201 can all carry out sedimentation operations. At this time, the coagulation sedimentation tank ensures efficient operation (it should be added that the sedimentation principle of its sedimentation component 2 is the same as the sedimentation principle of the coagulation sedimentation tanks commonly found on the market, and will not be elaborated on here).

[0035] When it is necessary to clean the inclined tube 203, the inclined tubes 203 in the three sedimentation tanks can be cleaned in a staggered manner, as follows:

[0036] For example, the inclined tube 203 inside the sedimentation tank connected to the first connecting pipe 301 can be cleaned first. At this time, the electric valve 304 on the first connecting pipe 301 is closed, so that the pipeline between this sedimentation tank and the mixing tank 101 is cut off, while the other two sedimentation tanks remain in working condition. After that, the inclined tube 203 inside the sedimentation tank can be cleaned by the staff using a flushing gun.

[0037] By analogy, the cleaning operation of the inclined tube 203 inside other sedimentation tanks can be realized. During the cleaning operation of the inclined tube 203, the coagulation sedimentation tank does not need to be completely shut down, so that the lithium iron phosphate mother liquor can be continuously treated, ensuring the continuity of wastewater treatment.

[0038] Please refer to this carefully. Figs. 1-3The top side of the sedimentation tank 201 is provided with three water outlets 204 along the horizontal direction, the three water outlets 204 are communicated with the three sedimentation tanks respectively, and the sedimentation tank 201 is fixed with a flow collecting groove 205 on the outer wall of the same side of the water outlets 204;

[0039] The bottom side of the sedimentation tank 201 is fixed with three sewage pipes 206, the three sewage pipes 206 are penetrated to the inside of the sedimentation tank 201 and communicated with the three sedimentation tanks respectively.

[0040] In the embodiment, when the sedimentation tank works, the wastewater after removing the flocculent through the sedimentation can be gathered to the flow collecting groove 205 through the water outlets 204 and flow to the next process through the flow collecting groove 205.

[0041] The sewage pipes 206 are used for the independent sewage discharge operation of the sedimentation tanks.

[0042] The above is only the preferred specific implementation method of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pre-treatment device for treating lithium iron phosphate mother liquor water, comprising a mixing assembly (1) having a mixing tank (101), a precipitation assembly (2), characterized in that, The precipitation assembly (2) is composed of a precipitation tank (201), a partition plate (202) and an inclined pipe (203); The two partition plates (202) are fixed in sequence on the inner side of the precipitation tank (201) along the horizontal direction, and are used to divide the inner cavity of the precipitation tank (201) into three independent precipitation chambers; and the inclined pipe (203) is installed in the three precipitation chambers, and is used to realize the independent flocculation and precipitation function of the three precipitation chambers. A pipeline control assembly (3) is arranged between the mixing tank (101) and the precipitation tank (201), and is used to deliver the mixed liquid in the mixing tank (101) to the inside of the three precipitation chambers; the pipeline control assembly (3) can realize the conduction or cutoff of the mixing tank (101) and the three precipitation chambers, so as to facilitate the cleaning operation of the inclined pipe (203) in the three precipitation chambers.

2. The pre-treatment device for treating lithium iron phosphate mother liquor water according to claim 1, characterized in that, The pipeline control assembly (3) comprises a first connecting pipe (301), a second connecting pipe (302), a third connecting pipe (303) and an electric valve (304). One end of the first connecting pipe (301), the second connecting pipe (302) and the third connecting pipe (303) is connected to one end of the mixing tank (101) in a conductive manner, and the other end of the first connecting pipe (301), the second connecting pipe (302) and the third connecting pipe (303) extends through to the inside of the precipitation tank (201) and is connected to the three precipitation chambers in a conductive manner. The electric valve (304) is installed in the middle of the pipeline of the first connecting pipe (301), the second connecting pipe (302) and the third connecting pipe (303), and is used to control the conduction state of the first connecting pipe (301), the second connecting pipe (302) and the third connecting pipe (303).

3. The pre-treatment device for treating lithium iron phosphate mother liquor water according to claim 1, characterized in that, Three water outlets (204) are formed in the top side of the precipitation tank (201) along the horizontal direction, and the three water outlets (204) are respectively connected to the three precipitation tanks; and a flow collection groove (205) is fixed to the outer wall of the same side of the precipitation tank (201) as the water outlets (204).

4. The pre-treatment device for treating lithium iron phosphate mother liquor water according to claim 1, characterized in that, A blowdown pipe (206) is fixed to the bottom of one side of the precipitation tank (201), and the blowdown pipe (206) is provided with three blowdown pipes (206) which penetrate into the inside of the precipitation tank (201) and are respectively connected to the three precipitation tanks.

5. The pre-treatment device for treating lithium iron phosphate mother liquor water according to claim 1, characterized in that, The mixing assembly (1) further comprises a water inlet pipe (102) and a stirring mechanism (103). The water inlet pipe (102) is fixed to the top of one end of the mixing tank (101) away from the precipitation tank (201) and is connected to the inner cavity of the mixing tank (101) in a conductive manner. The stirring mechanism (103) is fixed to the top of the mixing tank (101) by a support and extends to the inside of the mixing tank (101).

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