Wastewater treatment device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment device, which is characterized in that a wastewater treatment flow is redesigned, alkaline wastewater enters acidic wastewater and is subjected to neutralization reaction in a three-stage treatment tank, so that the acidic wastewater containing Ca < 2 + > is always kept acidic, and the Ca < 2 + > cannot overflow in the form of a slightly soluble substance; and the amount of slag deposited in the clarification tank and the low-tungsten exchange column is naturally and greatly reduced, so that the labor intensity of workers is greatly reduced.

Description

Technical Field

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

[0002] At present, the smelting of scheelite mainly adopts alkaline and acid processes. Although the alkaline process is stable and has a high recovery rate, it has high alkali consumption and produces a large amount of alkaline wastewater during ion exchange; the acid process can produce tungstic acid, but also produces a large amount of acidic wastewater, and the acidic wastewater contains a large amount of Ca 2+ At present, the wastewater treatment process used in the wastewater station is to add acidic wastewater to alkaline wastewater. According to this treatment process, acid adjustment lag will occur, resulting in local alkalinity, so that the calcium ions in the acidic wastewater overflow in the form of slightly soluble substances, and a large amount of calcium slag will be deposited in the wastewater clarification tank, causing the volume of the clarification tank to continue to decrease, resulting in an increase in the workload of cleaning the tank and an increase in the labor of workers. In addition, some calcium slag enters the low-tungsten recovery exchange column, causing resin compaction and blockage, which greatly affects the low-tungsten recovery efficiency and increases the treatment cost. Therefore, it is urgent to adjust the existing wastewater treatment equipment. Utility Model Content

[0003] The purpose of the utility model is to provide a wastewater treatment device to at least partially solve the problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A wastewater treatment device, comprising:

[0006] Primary treatment tank, secondary treatment tank, tertiary treatment tank;

[0007] The acid wastewater inlet pipe is arranged at the lower part of the side of the primary treatment tank, and the acid wastewater is supplied into the primary treatment tank from the lower part of the side of the primary treatment tank;

[0008] The alkaline wastewater main pipe supplies alkaline wastewater into the primary treatment tank below the acidic wastewater liquid level through the alkaline wastewater branch pipe 1, the wastewater in the primary treatment tank is connected with the water inlet arranged at the lower part of the side of the secondary treatment tank through the water outlet at the upper part of the side of the primary treatment tank, so that the wastewater treated in the primary treatment tank is supplied to the secondary treatment tank from the lower part of the side of the secondary treatment tank, the alkaline wastewater main pipe supplies alkaline wastewater into the secondary treatment tank below the wastewater liquid level through the alkaline wastewater branch pipe 2, the wastewater in the secondary treatment tank is connected with the water inlet arranged at the lower part of the side of the tertiary treatment tank through the water outlet at the upper part of the side of the secondary treatment tank, so that the wastewater treated in the secondary treatment tank is supplied to the tertiary treatment tank from the lower part of the side of the tertiary treatment tank, the alkaline wastewater main pipe supplies alkaline wastewater into the tertiary treatment tank below the wastewater liquid level through the alkaline wastewater branch pipe 3, and the wastewater in the tertiary treatment tank is discharged through the water outlet pipe at the upper part of the side of the tertiary treatment tank.

[0009] Preferably, the primary treatment tank, the secondary treatment tank, and the tertiary treatment tank are respectively provided with a stirrer 1, a stirrer 2, and a stirrer 3, which are used to stir the wastewater in the treatment tank during wastewater treatment.

[0010] Preferably, pH meter one, pH meter two, and pH meter three are respectively provided at the outlets of the primary treatment tank, the secondary treatment tank, and the tertiary treatment tank for monitoring the pH value of the outlet water of the treatment tank.

[0011] Preferably, the alkaline wastewater branch pipe 1, the alkaline wastewater branch pipe 2, and the alkaline wastewater branch pipe 3 are all provided with flow meters and valves for controlling and monitoring the inflow of alkaline wastewater.

[0012] Preferably, a flow meter and a valve are provided on the acidic wastewater inlet pipe to control and monitor the inflow of the acidic wastewater.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a wastewater treatment device. By redesigning the wastewater treatment process, alkaline wastewater enters acidic wastewater and a neutralization reaction occurs in a tertiary treatment tank, so that the Ca-containing 2+ Acidic wastewater always remains acidic, so Ca 2+ It will not overflow in the form of slightly soluble matter, and the amount of slag deposited in the clarification tank and low-tungsten exchange column will naturally be greatly reduced, which greatly reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the wastewater treatment device of the utility model.

[0017] In the figure: 1-primary treatment tank, 11-alkaline wastewater branch pipe one, 12-agitator one, 13-pH meter one, 2-secondary treatment tank, 21-alkaline wastewater branch pipe two, 22-agitator two, 23-pH meter two, 3-tertiary treatment tank, 31-alkaline wastewater branch pipe three, 32-agitator three, 33-pH meter three, 4-alkaline wastewater main pipe, 5-acidic wastewater inlet pipe, 6-outlet pipe.

[0018] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The utility model discloses a wastewater treatment device.

[0022] According to the attached Figure 1 As shown, including:

[0023] Primary treatment tank 1, secondary treatment tank 2, tertiary treatment tank 3;

[0024] The acid wastewater inlet pipe 5 is arranged at the lower part of the side of the primary treatment tank 1, and the acid wastewater is supplied into the primary treatment tank 1 from the lower part of the side of the primary treatment tank 1;

[0025] The alkaline wastewater main pipe 4 supplies alkaline wastewater to the acidic wastewater level below the primary treatment tank 1 through the alkaline wastewater branch pipe 11. The wastewater in the primary treatment tank 1 is connected to the water inlet arranged at the lower part of the side of the secondary treatment tank 2 through the water outlet at the upper part of the side of the primary treatment tank 1, so that the wastewater treated in the primary treatment tank 1 is supplied to the secondary treatment tank 2 from the lower part of the side of the secondary treatment tank 2. The alkaline wastewater main pipe 4 supplies alkaline wastewater to the wastewater in the secondary treatment tank 2 through the alkaline wastewater branch pipe 21. Below the liquid level, the wastewater in the secondary treatment tank 2 is connected with the water inlet arranged at the lower part of the side of the tertiary treatment tank 3 through the water outlet at the upper part of the side of the secondary treatment tank 2, so that the wastewater treated in the secondary treatment tank 2 is supplied to the tertiary treatment tank 3 from the lower part of the side of the tertiary treatment tank 3, and the alkaline wastewater main pipe 4 supplies the alkaline wastewater into the tertiary treatment tank 3 below the wastewater liquid level through the alkaline wastewater branch pipe 3 31, and the wastewater in the tertiary treatment tank 3 is discharged through the outlet pipe 6 at the upper part of the side of the tertiary treatment tank 3.

[0026] In one embodiment, the primary treatment tank 1, the secondary treatment tank 2, and the tertiary treatment tank 3 are respectively provided with a stirrer 12, a stirrer 22, and a stirrer 3 32, which are used to stir the wastewater in the treatment tanks during wastewater treatment.

[0027] In one embodiment, pH meter 13, pH meter 23, and pH meter 33 are respectively provided at the outlets of the primary treatment tank 1, the secondary treatment tank 2, and the tertiary treatment tank 3 to monitor the pH value of the outlet water of the treatment tanks.

[0028] In one embodiment, the alkaline wastewater branch pipe 1 11 , the alkaline wastewater branch pipe 2 21 , and the alkaline wastewater branch pipe 3 31 are all provided with flow meters and valves for controlling and monitoring the inflow of alkaline wastewater.

[0029] In one embodiment, a flow meter and a valve are provided on the acidic wastewater inlet pipe 5 to control and monitor the inflow of the acidic wastewater.

[0030] When the wastewater treatment device described in the utility model is in use, a large amount of alkaline wastewater generated by the production of APT in the main workshop enters the collection pool of the wastewater station, and the acidic wastewater generated by the production of tungstic acid from scheelite and other strong acid wastewater generated in the main workshop are pumped to the acid storage tank of the wastewater station. The acidic wastewater in the acid storage tank is pumped into the primary treatment tank 1 from the lower part of the side of the primary treatment tank 1 through the acidic wastewater inlet pipe 5 through the frequency conversion pump (the frequency conversion is adjusted according to the amount of alkaline wastewater to be treated), and the alkaline wastewater main pipe 4 supplies the alkaline wastewater into the primary treatment tank 1 below the acidic wastewater liquid level through the alkaline wastewater branch pipe 11 to prevent local alkalinity; the wastewater in the primary treatment tank 1 is connected with the water inlet arranged at the lower part of the side of the secondary treatment tank 2 through the water outlet at the upper part of the side of the primary treatment tank 1. The wastewater treated in the primary treatment tank 1 is supplied to the secondary treatment tank 2 from the lower side of the secondary treatment tank 2, and the alkaline wastewater main pipe 4 supplies the alkaline wastewater into the secondary treatment tank 2 below the wastewater liquid level through the alkaline wastewater branch pipe 2 21 to prevent local alkalinity; the wastewater in the secondary treatment tank 2 is connected with the water inlet arranged at the lower side of the tertiary treatment tank 3 through the water outlet at the upper side of the secondary treatment tank 2, so that the wastewater treated in the secondary treatment tank 2 is supplied to the tertiary treatment tank 3 from the lower side of the tertiary treatment tank 3, and the alkaline wastewater main pipe 4 supplies the alkaline wastewater into the tertiary treatment tank 3 below the wastewater liquid level through the alkaline wastewater branch pipe 3 31 to prevent local alkalinity; the wastewater in the tertiary treatment tank 3 is discharged through the outlet pipe 6 at the upper side of the tertiary treatment tank 3. During the wastewater treatment process, the valves can be adjusted in real time based on the monitoring results of pH meter 1 13, pH meter 2 23, and pH meter 3 33 to adjust the amount of alkaline wastewater and acidic wastewater added so that the water discharged from the outlet pipe 6 is within the range of low tungsten recovery requirements.

[0031] The utility model redesigns the wastewater treatment process, and the alkaline wastewater enters the acidic wastewater and undergoes a neutralization reaction in the tertiary treatment tank to prevent local alkalinity and Ca 2+ Acidic wastewater always remains acidic, so Ca 2+ It will not overflow in the form of slightly soluble matter, and the amount of slag deposited in the clarification tank and low-tungsten exchange column will naturally be greatly reduced, which greatly reduces the labor intensity of workers.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A wastewater treatment device, characterized in that: include: Primary treatment tank, secondary treatment tank, tertiary treatment tank; The acid wastewater inlet pipe is arranged at the lower part of the side of the primary treatment tank, and the acid wastewater is supplied into the primary treatment tank from the lower part of the side of the primary treatment tank; The alkaline wastewater main pipe supplies alkaline wastewater into the primary treatment tank below the acidic wastewater liquid level through the alkaline wastewater branch pipe 1, the wastewater in the primary treatment tank is connected with the water inlet arranged at the lower part of the side of the secondary treatment tank through the water outlet at the upper part of the side of the primary treatment tank, so that the wastewater treated in the primary treatment tank is supplied to the secondary treatment tank from the lower part of the side of the secondary treatment tank, the alkaline wastewater main pipe supplies alkaline wastewater into the secondary treatment tank below the wastewater liquid level through the alkaline wastewater branch pipe 2, the wastewater in the secondary treatment tank is connected with the water inlet arranged at the lower part of the side of the tertiary treatment tank through the water outlet at the upper part of the side of the secondary treatment tank, so that the wastewater treated in the secondary treatment tank is supplied to the tertiary treatment tank from the lower part of the side of the tertiary treatment tank, the alkaline wastewater main pipe supplies alkaline wastewater into the tertiary treatment tank below the wastewater liquid level through the alkaline wastewater branch pipe 3, and the wastewater in the tertiary treatment tank is discharged through the water outlet pipe at the upper part of the side of the tertiary treatment tank.

2. The wastewater treatment device according to claim 1, characterized in that: The primary treatment tank, the secondary treatment tank and the tertiary treatment tank are respectively provided with a stirrer 1, a stirrer 2 and a stirrer 3, which are used to stir the wastewater in the treatment tank during wastewater treatment.

3. The wastewater treatment device according to claim 1, characterized in that: The outlets of the primary treatment tank, the secondary treatment tank, and the tertiary treatment tank are respectively provided with pH meter one, pH meter two, and pH meter three for monitoring the pH value of the outlet water of the treatment tank.

4. The wastewater treatment device according to claim 1, characterized in that: Alkaline wastewater branch pipe 1, alkaline wastewater branch pipe 2 and alkaline wastewater branch pipe 3 are all provided with flow meters and valves for controlling and monitoring the inflow of alkaline wastewater.

5. The wastewater treatment device according to claim 1, characterized in that: A flow meter and a valve are provided on the acid wastewater inlet pipe to control and monitor the inflow of the acid wastewater.

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