Fluorine-containing wastewater resource utilization equipment

Abstract

The utility model relates to a fluorine-containing wastewater resource utilization equipment, including processing box, being provided with fluorine-containing wastewater inlet on the processing box, being provided with fluorine-containing wastewater inlet storage box part corresponding fluorine-containing wastewater inlet, having PH value detection piece A on fluorine-containing wastewater inlet storage box part, fluorine-containing wastewater inlet storage box part includes the baffle, is provided with PH adjustment box part entrance at 3 / 5 baffle height, and PH adjustment box part is used to adjust the PH of fluorine-containing wastewater to 10-12 PH adjustment execution area, and PH adjustment box part passes through mesh plate, and is connected with processing box part, and the top of processing box part is provided with calcium source head investment storehouse and flocculating agent adding port.

Description

Technical Field

[0001] This utility model relates to environmental protection technology and its equipment, specifically, it is a device for the resource utilization of fluoride-containing wastewater. Background Technology

[0002] Fluoride-containing wastewater mainly originates from strategic emerging industries such as electronics, photovoltaics, electroplating, and fluorochemicals. Taking the photovoltaic industry as an example, in 2024, its fluoride-containing wastewater generation reached hundreds of millions of tons, with hydrofluoric acid mixtures used in silicon wafer cutting and etching processes being the main source of fluoride pollution. In the chip cleaning process of the electronics industry, mixtures of hydrofluoric acid with nitric acid and hydrochloric acid also produce high concentrations of fluorides. The fluoride ion concentration in these wastewaters is typically between 500-5000 mg / L, and in some photovoltaic companies it even reaches as high as 10000 mg / L, far exceeding the 10 mg / L limit stipulated in the "Integrated Wastewater Discharge Standard" (GB8978-1996).

[0003] Fluoride poses significant environmental hazards: when the fluoride concentration in drinking water exceeds 4 mg / L, the prevalence of dental fluorosis can reach 100%, and long-term exposure can also lead to skeletal fluorosis.

[0004] Therefore, it is necessary to provide equipment for the resource utilization of fluoride-containing wastewater to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide equipment for the resource utilization of fluoride-containing wastewater.

[0006] The technical solution is as follows: A fluoride-containing wastewater resource utilization device includes a treatment tank with a fluoride-containing wastewater inlet and a corresponding fluoride-containing wastewater inlet storage tank. The fluoride-containing wastewater inlet storage tank has a pH value detection element A. The fluoride-containing wastewater inlet storage tank includes an isolation plate, and a pH adjustment tank inlet is located at 3 / 5 of the isolation plate height. The pH adjustment tank is used to adjust the pH of the fluoride-containing wastewater to a pH adjustment execution zone of 10-12. The pH adjustment tank is connected to the treatment tank through a perforated plate. The top of the treatment tank is equipped with a calcium source input chamber and a flocculant addition port.

[0007] Furthermore, fluoride-containing wastewater is input through a drive pump and hose corresponding to the fluoride-containing wastewater inlet, with an input water rate of 10L / H - 15L / H.

[0008] Furthermore, the pH adjustment tank inlet is connected to a drainage ramp, and the drainage ramp is equipped with an acidic regulator inlet and an alkaline regulator inlet.

[0009] Furthermore, the slope of the drainage ramp is 45-70°.

[0010] Furthermore, the pH adjustment chamber also has a pH value detection component B.

[0011] Furthermore, the calcium source input tank is used as the calcium hydroxide input port, and the flocculant addition port is used as the polyacrylamide input port.

[0012] Furthermore, a wastewater agitator is installed at the bottom of the treatment tank to agitate the wastewater while simultaneously adding calcium hydroxide and flocculant.

[0013] Furthermore, the bottom of the processing tank has a perforated plate, and below the perforated plate is the sedimentation tank.

[0014] Compared with existing technologies, this invention can treat fluoride-containing wastewater with high quality, and recover and utilize calcium fluoride during the treatment process, thereby improving resource recovery efficiency while treating wastewater. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0016] Example:

[0017] See Figure 1 This embodiment demonstrates a fluoride-containing wastewater resource utilization equipment, including a treatment tank 1, a fluoride-containing wastewater inlet 2 on the treatment tank, a fluoride-containing wastewater inlet storage tank 3 corresponding to the fluoride-containing wastewater inlet 2, a pH value detection element A4 on the fluoride-containing wastewater inlet storage tank 3, the fluoride-containing wastewater inlet storage tank 3 includes an isolation plate 5, and a pH adjustment tank 6 inlet is set at 3 / 5 of the height of the isolation plate. The pH adjustment tank 6 is used to adjust the pH of the fluoride-containing wastewater to the pH adjustment execution zone of 10-12. The pH adjustment tank 6 is connected to the treatment tank 8 through a mesh plate 7. The top of the treatment tank 8 is provided with a calcium source input chamber 9 and a flocculant addition port 10.

[0018] Fluorine-containing wastewater is input through a drive pump and hose corresponding to fluorine-containing wastewater inlet 2, with an input water rate of 10L / H - 15L / H.

[0019] The pH adjustment tank section 6 is connected to a drainage ramp 11, and an acidic regulator inlet 12 and an alkaline regulator inlet 13 are provided corresponding to the drainage ramp 11.

[0020] The slope of drainage ramp 11 is 45-70°. The pH adjustment chamber 6 also has a pH value detection element B14.

[0021] Calcium source input tank 9 is used as the calcium hydroxide input port, and flocculant addition port 10 is used as the polyacrylamide input port.

[0022] The bottom of the treatment tank 8 is also equipped with a wastewater agitator 15 to agitate the wastewater and simultaneously add calcium hydroxide and flocculant.

[0023] The bottom of the processing tank section 8 has a mesh strainer 16, and below the mesh strainer is the sedimentation tank section 17.

[0024] Compared with existing technologies, this invention can treat fluoride-containing wastewater with high quality, and recover and utilize calcium fluoride during the treatment process, thereby improving resource recovery efficiency while treating wastewater.

[0025] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A device for the resource utilization of fluoride-containing wastewater, characterized in that: The system includes a treatment tank with a fluoride-containing wastewater inlet and a corresponding fluoride-containing wastewater inlet storage tank. The fluoride-containing wastewater inlet storage tank has a pH value detection device A. The fluoride-containing wastewater inlet storage tank includes an isolation plate, and a pH adjustment tank inlet is located at 3 / 5 of the isolation plate height. The pH adjustment tank is used to adjust the pH of the fluoride-containing wastewater to a pH adjustment range of 10-12. The pH adjustment tank is connected to the treatment tank through a perforated plate. The top of the treatment tank has a calcium source inlet and a flocculant addition port.

2. The equipment for resource utilization of fluoride-containing wastewater according to claim 1, characterized in that: Fluorine-containing wastewater is input through a drive pump and hose corresponding to the fluorine-containing wastewater inlet, with an input water rate of 10L / H - 15L / H.

3. The equipment for resource utilization of fluoride-containing wastewater according to claim 1, characterized in that: The pH adjustment tank inlet is connected to a drainage ramp, and the drainage ramp is equipped with an acidic regulator inlet and an alkaline regulator inlet.

4. The equipment for resource utilization of fluoride-containing wastewater according to claim 3, characterized in that: The slope of the drainage ramp is 45-70°.

5. The equipment for resource utilization of fluoride-containing wastewater according to claim 1, characterized in that: The pH adjustment chamber also has a pH value detection component B.

6. The equipment for resource utilization of fluoride-containing wastewater according to claim 1, characterized in that: The calcium source inlet is used as the calcium hydroxide inlet, and the flocculant inlet is used as the polyacrylamide inlet.

7. The equipment for resource utilization of fluoride-containing wastewater according to claim 1, characterized in that: The bottom of the treatment tank is also equipped with a wastewater agitator to agitate the wastewater while simultaneously adding calcium hydroxide and flocculant.

8. The equipment for resource utilization of fluoride-containing wastewater according to any one of claims 1-7, characterized in that: The bottom of the processing tank has a perforated plate, and below the perforated plate is the sedimentation tank.

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