Recycling device for sulfur-phosphorus-titanium process derived wastewater

Abstract

The utility model relates to a sulfur-phosphorus-titanium process derived wastewater recycling device which comprises a sedimentation tank, a filter press, a first filtration and adsorption tank, an ion exchange resin column, an intermediate tank, a neutralization tank, a second filtration and adsorption tank and a sterilization tank which are sequentially connected through pipelines, liquid level sensors are arranged in the sedimentation tank and the sterilization tank, a fluorine ion detector is arranged in the intermediate tank, and a pH value sensor is arranged in the neutralization tank. According to the utility model, the sedimentation tank and the ion exchange resin column are arranged, so that fluorine ions in wastewater generated by a sulfur-phosphorus-titanium process are treated for multiple times, and the content of the fluorine ions in the wastewater is reduced to 0; a filtration and adsorption tank is arranged to adsorb impurities and waste gas in the wastewater; a neutralization tank is arranged to adjust the pH value of the wastewater, and a sterilization tank is arranged to sterilize the wastewater; the treated wastewater is clean and can be directly introduced into a sulfur-phosphorus-titanium process for secondary utilization, so that the aim of saving water resources is fulfilled.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and particularly relates to a device for recycling wastewater derived from a sulfur-phosphorus-titanium process. Background Art

[0002] The sulfur-phosphorus-titanium process refers to the process of decomposing titanium concentrate (or high-titanium slag) with sulfuric acid to generate hydrated titanium dioxide and free sulfuric acid. In the sulfur-phosphorus-titanium industry chain, the filter water from the disk filter washing machine of the phosphorus chemical industry, the wastewater from cleaning the filter cloth, and the magnesium removal mother liquor from the magnesium removal of phosphate ore all contain fluorine. Directly discharging the fluorine-containing wastewater does not meet the national environmental protection standards and is harmful to human health. In industry, the fluorine-containing wastewater is directly discharged after being filtered and neutralized. Although it meets the emission standards, the direct discharge of a large amount of water resources causes a waste of water resources. Utility Model Content

[0003] The utility model aims to provide a sulfur-phosphorus-titanium process derived wastewater recycling device to solve the technical problems raised in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A sulfur-phosphorus-titanium process-derived wastewater recycling device comprises: a sedimentation tank, a filter press, a first filtration-adsorption tank, an ion exchange resin column, an intermediate tank, a neutralization tank, a second filtration-adsorption tank and a sterilization tank which are sequentially connected by pipelines; liquid level sensors are provided inside the sedimentation tank and the sterilization tank, a fluoride ion detector is provided inside the intermediate tank, and a pH sensor is provided inside the neutralization tank.

[0006] As a further improvement of the utility model, the sedimentation tank includes a primary sedimentation tank and a secondary sedimentation tank in sequence; the drain outlet of the primary sedimentation tank is connected to the water inlet of the secondary sedimentation tank through a pipeline, and the pipeline is connected to the pipeline between the secondary sedimentation tank and the filter press through a branch pipe;

[0007] The branch pipe and the pipeline connected in parallel with the branch pipe are both provided with a control valve 1.

[0008] As a further improvement of the utility model, one end of a branch pipe is connected to the pipeline between the intermediate tank and the neutralization tank, and the other end of the branch pipe is connected to the inlet of the ion exchange resin column; and a control valve 2 is provided on the branch pipe and on the pipeline between the intermediate tank and the neutralization tank in parallel with the branch pipe.

[0009] As a further improvement of the utility model, valves are provided on the pipelines.

[0010] As a further improvement of the utility model, a power pump is provided on the pipeline between the ion exchange resin column and the intermediate tank.

[0011] As a further improvement of the utility model, a pressure gauge and a flow meter are provided on the pipeline.

[0012] As a further improvement of the present invention, filter plates and activated carbon adsorption plates are provided inside the first filtration adsorption tank and the second filtration adsorption tank.

[0013] As a further improvement of the utility model, an ultraviolet lamp is provided inside the sterilization pool.

[0014] The beneficial effects of adopting the above technical solution are:

[0015] The utility model is provided with a sedimentation tank and an ion exchange resin column, and the fluorine ions in the wastewater generated by the sulfur-phosphorus-titanium process are treated for multiple times, so that the fluorine ion content in the wastewater is reduced to 0; a filtering adsorption tank is provided, and impurities and waste gas in the wastewater are adsorbed; a neutralization tank is provided to adjust the pH value of the wastewater, and a sterilization tank is provided to sterilize the wastewater; the treated wastewater is clean and can be directly introduced into the sulfur-phosphorus-titanium process for secondary utilization, so as to achieve the purpose of saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the process flow chart of the utility model;

[0017] Explanation of marks in the figure: 1 filter press, 2 first filter adsorption tank, 3 ion exchange resin column, 4 intermediate tank, 5 neutralization tank, 6 second filter adsorption tank, 7 sterilization tank, 8 negative ion detector, 9 pH sensor, 10 primary sedimentation tank, 11 secondary sedimentation tank, 12 pipeline, 13 branch pipe, 14 control valve one, 15 branch pipe, 16 control valve two, 17 valve, 18 power pump, 19 pressure gauge, 20 flow meter. DETAILED DESCRIPTION

[0018] In order to better understand the purpose, structure and function of the present invention, the present invention is described clearly and completely below in conjunction with the accompanying drawings.

[0019] like Figure 1 The sulfur-phosphorus-titanium process-derived wastewater recycling device shown comprises: a sedimentation tank, a filter press 1, a first filtration adsorption tank 2, an ion exchange resin column 3, an intermediate tank 4, a neutralization tank 5, a second filtration adsorption tank 6 and a sterilization tank 7 connected in sequence through pipelines. Furthermore, valves 17 are provided on the pipelines; a power pump 18 is provided on the pipeline between the ion exchange resin column 3 and the intermediate tank 4; and a pressure gauge 19 and a flow meter 20 are provided on the pipelines.

[0020] Fluoride-containing wastewater is placed in the sedimentation tank, and lime, polyaluminum chloride, and polyacrylamide are placed in it in turn, so that calcium ions react with fluoride ions to generate calcium fluoride precipitation and adsorb fluoride ions in the wastewater to form flocculent precipitation, and preliminarily remove fluoride ions in the wastewater. A liquid level sensor for detecting the liquid level is provided inside the sedimentation tank. The sedimentation tank includes a primary sedimentation tank 10 and a secondary sedimentation tank 11 in turn; the drain outlet of the primary sedimentation tank 10 is connected to the water inlet of the secondary sedimentation tank 11 through a pipe 12, and the pipe 12 is connected to the pipeline between the secondary sedimentation tank 11 and the filter press 1 through a branch pipe 13; and the branch pipe 13 and the pipe 12 connected in parallel with the branch pipe 13 are both provided with a control valve 14. According to the concentration of fluorine in the wastewater and production needs, whether to perform secondary precipitation is selected; during primary precipitation, the control valve 14 on the branch pipe 13 is opened, and the control valve 14 on the pipeline 12 is closed, and the wastewater after precipitation is directly passed from the primary sedimentation tank 10 to the filter press 1 for pressure filtration; during secondary precipitation, the control valve 14 on the branch pipe 13 is closed, and the control valve 2 16 on the pipeline 12 is opened, and the wastewater in the primary sedimentation tank 10 is passed to the secondary sedimentation tank 11 for secondary precipitation, and then passed to the filter press 1 for pressure filtration. In order to provide power for the flow of wastewater, a power valve is set on the pipeline 12, and a pressure gauge 19 is also set on the pipeline 12 for easy detection.

[0021] The filter press 1 presses the sediment and floccules in the wastewater after precipitation into a filter cake, and the wastewater continues to flow into the first filter adsorption tank 2 for treatment. In this embodiment, the first filter adsorption tank 2 and the second filter adsorption tank 6 are both provided with filter plates and activated carbon adsorption plates; the filter plates filter the impurities in the wastewater, and the activated carbon further absorbs the impurities and waste gas in the wastewater. The wastewater then enters the ion exchange resin column 3 to remove the fluoride ions in the wastewater for a second time, and the wastewater after the second removal of fluoride ions flows through the pipeline to the intermediate tank 4 for storage. Among them, a fluoride ion detector 8 is provided inside the intermediate tank 4, which is used to detect the fluoride ion content in the intermediate tank 4. When the fluoride ion content is 0, the wastewater enters the neutralization tank 5. When the fluoride ion content is greater than 0, the wastewater is defluorinated again; based on this, one end of the branch pipe 15 is connected to the pipeline between the intermediate tank 4 and the neutralization tank 5, and the other end of the branch pipe 15 is connected to the inlet of the ion exchange resin column 3; and the branch pipe 15 and the pipeline between the intermediate tank 4 and the neutralization tank 5 connected in parallel with the branch pipe 15 are both provided with a control valve 2 16. When defluorination is not needed again, the control valve 16 on the branch pipe 15 is opened, the control valve 16 on the pipeline is closed, and the wastewater flows directly to the neutralization tank 5; when defluorination is needed again, the control valve 16 on the branch pipe 15 is closed, the control valve 16 on the pipeline is opened, and the wastewater in the intermediate tank 4 enters the ion exchange resin column 3 for defluorination again through the branch pipe 15 until the fluoride ion detector 8 detects that the fluoride ion content in the intermediate tank 4 is 0, and the state of the control valve 16 is changed. In order to provide power for the wastewater in the branch pipe 15 to flow to the ion exchange resin column 3, a power pump 18 is provided on the branch pipe 15.

[0022] The neutralization tank 5 is used to add a neutralizer to adjust the pH value therein, and a pH sensor 9 is provided inside the neutralization tank 5 to detect the pH value therein. When the wastewater in the neutralization tank 5 is neutral, the addition of the neutralizer is stopped. Since the wastewater contains other ions after the neutralizer is added, the wastewater is passed to the second filtration adsorption tank 6 for filtration and absorption. The wastewater treated by the second filtration adsorption tank 6 is sterilized in the sterilization tank 7. A liquid level sensor is provided inside the sterilization tank 7. In this embodiment, an ultraviolet lamp is provided inside the sterilization tank 7 to sterilize the wastewater by ultraviolet rays. The sterilized water can be passed into the sulfur-phosphorus-titanium process for secondary utilization, thereby achieving the purpose of saving water resources.

[0023] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A sulfur-phosphorus-titanium process-derived wastewater recycling device, characterized in that: It includes: A sedimentation tank, a filter press (1), a first filtration adsorption tank (2), an ion exchange resin column (3), an intermediate tank (4), a neutralization tank (5), a second filtration adsorption tank (6) and a sterilization tank (7) are sequentially connected via pipelines; liquid level sensors are provided inside the sedimentation tank and the sterilization tank (7), a fluoride ion detector (8) is provided inside the intermediate tank (4), and a pH value sensor (9) is provided inside the neutralization tank (5).

2. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: The sedimentation tanks sequentially comprise a primary sedimentation tank (10) and a secondary sedimentation tank (11); the drain outlet of the primary sedimentation tank (10) is connected to the water inlet of the secondary sedimentation tank (11) via a pipe (12); the pipe (12) is connected to the pipeline between the secondary sedimentation tank (11) and the filter press (1) via a branch pipe (13); Furthermore, a control valve 1 (14) is provided on the branch pipe (13) and the pipeline (12) connected in parallel with the branch pipe (13).

3. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: One end of a branch pipe (15) is connected to the pipeline between the intermediate tank (4) and the neutralization tank (5), and the other end of the branch pipe (15) is connected to the inlet of the ion exchange resin column (3); and a control valve 2 (16) is provided on the branch pipe (15) and the pipeline between the intermediate tank (4) and the neutralization tank (5) connected in parallel with the branch pipe (15).

4. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: The pipelines are all provided with valves (17).

5. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: A power pump (18) is provided on the pipeline between the ion exchange resin column (3) and the intermediate tank (4).

6. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: The pipeline is provided with a pressure gauge (19) and a flow meter (20).

7. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: The first filtration adsorption tank (2) and the second filtration adsorption tank (6) are both provided with filter plates and activated carbon adsorption plates.

8. The sulfur-phosphorus-titanium process-derived wastewater recycling device according to claim 1, characterized in that: An ultraviolet lamp is arranged inside the sterilization pool (7).

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