Heavy metal wastewater treatment device

Abstract

The utility model discloses a heavy metal wastewater treatment device which comprises a treatment pond, a plurality of areas are formed in the treatment pond to facilitate wastewater treatment, every two adjacent areas are communicated with each other, a water inlet pipe and a water outlet pipe which are communicated with the internal areas are arranged on the two sides of the treatment pond respectively, and a slag discharge pipe is further arranged at the bottom of the treatment pond. A slag discharge pipe is arranged on the side wall of the treatment tank and is respectively communicated with each area in the treatment tank, a valve is arranged at the end part of the slag discharge pipe, a high-pressure pipe for preventing the slag discharge pipe from being blocked is arranged at the other end of the slag discharge pipe, a reflux tank communicated with the treatment tank is also arranged on the side wall of the treatment tank, and a dosing pipe inserted into the treatment tank is arranged in the reflux tank. The treatment tank is used for treating wastewater, workers can conveniently detect the quality of wastewater treatment in real time through the backflow tank arranged on the side wall of the treatment tank so as to conveniently add liquid medicine into the treatment tank to treat the wastewater, and solids can be conveniently cleaned through the arrangement of the slag discharge pipe and the high-pressure pipe so as to prevent blockage.

Description

Technical Field

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

[0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal wastewater (such as cadmium, nickel, mercury, zinc, etc.) is one of the most serious industrial wastewaters that pollute the environment and cause the greatest harm to humans.

[0003] The treatment of heavy metal wastewater is usually divided into several types: chemical treatment, physical treatment and biological treatment.

[0004] After searching, it was found that the Chinese utility model patent with the patent publication number "CN213313577U" disclosed an industrial wastewater treatment device, including a wastewater treatment box, wherein the wastewater treatment box is provided with a primary filter, a primary filter knocking assembly, a secondary filter cleaning assembly and a secondary filter from top to bottom, wherein the primary filter knocking assembly includes a turntable, a swing rod and a knocking hammer, wherein a strip-shaped limit groove is provided near the other end of the swing rod, a driving rod is fixed at the non-center of the front side of the turntable, and a filter residue outlet 1 is provided near the primary filter on the right side of the wastewater treatment box. Compared with the prior art, the utility model has the following advantages: as a preliminary filtering treatment process for industrial wastewater treatment, the utility model can filter the impurities in the wastewater more effectively and efficiently, and the two-pass filter filter assembly ensures a higher quality filtration of the wastewater; and the special primary filter knocking assembly and the secondary filter cleaning assembly can effectively prevent the filter from being blocked during filtration, and ensure that the device performs continuous and efficient filtration.

[0005] However, this technical solution has at least the following problems when being processed:

[0006] 1. When industrial wastewater is treated, it may contain large particles of solid matter (such as metal chips, etc.). If it is treated by the above-mentioned treatment device, it is easy to cause the solid matter to be stuck on the screen, and it cannot be cleaned even if the filter is knocked on the component.

[0007] 2. The filter knocking assembly adopted in this technical solution is realized by driving a turntable to rotate through a driving motor, and the turntable then drives the pendulum to swing back and forth. Since one end of the pendulum is inserted into the wastewater treatment tank, a larger space is required when swinging. Therefore, at least a through hole larger than the external size of the pendulum is required to realize the swing of the pendulum, which may cause the liquid in the tank to flow out of the through hole.

[0008] Another example is a Chinese utility model patent with a patent publication number of "CN215161808U" that discloses an industrial wastewater treatment pool, which belongs to the technical field of industrial wastewater treatment. The industrial wastewater treatment pool includes a treatment pool, a water inlet pipe is installed on the upper part of the treatment pool, a hole is opened on the side surface of the treatment pool, a sealing door is installed on the surface of the hole, a filter is installed on the inner wall of the treatment pool, a water purification mechanism is installed inside the treatment pool, and the water purification mechanism includes a fixed plate, a first motor is fixedly installed on the upper part of the fixed plate, a rotating rod is installed on the output end of the first motor, and a rotating blade is installed on the surface of the rotating rod, an ultraviolet sterilization lamp is installed at the bottom of the treatment pool, a drug mixing mechanism is installed on the side surface of the treatment pool, and a filtering mechanism is installed on the side surface of the treatment pool. The utility model can treat wastewater through a filter, a water purification mechanism, an ultraviolet sterilization lamp and a filtering mechanism, which is beneficial to improving the quality of wastewater treatment; the drug can be dissolved through the drug mixing mechanism and the water purification mechanism, which is beneficial to improving the dissolution efficiency.

[0009] Through the above scheme, drugs are added to industrial wastewater for wastewater treatment to facilitate wastewater purification. However, in order to ensure the quality of wastewater treatment, this structure needs to proportion the wastewater and drugs, which makes it impossible to achieve continuous wastewater treatment. If the wastewater needs to be treated continuously, the ratio of the amount of wastewater added to the amount of drug added may be inconsistent, affecting the quality of wastewater treatment. Utility Model Content

[0010] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a heavy metal wastewater treatment device, which is connected to a slag discharge pipe at the bottom of the treatment tank, and a valve is arranged on the slag discharge pipe, which can discharge water-insoluble impurities at a regular time, facilitate subsequent wastewater treatment, and effectively prevent clogging of the filter plate. A reflux tank is arranged at the outer end of the treatment tank, which is convenient for real-time detection of the quality of internal wastewater treatment, and then convenient for the staff to adjust the amount of neutralizing agent added, so as to realize continuous treatment of wastewater.

[0011] The utility model is implemented in this way: a heavy metal wastewater treatment device is constructed, including a treatment pool, wherein a plurality of areas are opened in the treatment pool for facilitating wastewater treatment, and two adjacent areas are connected to each other, and water inlet pipes and water outlet pipes connected to the internal areas are respectively arranged on both sides of the treatment pool, and a slag discharge pipe is also arranged at the bottom of the treatment pool, and the slag discharge pipe is respectively connected to various internal areas of the treatment pool through connecting pipes, and a valve is arranged at the end of the slag discharge pipe, and a high-pressure pipe is arranged at the other end of the slag discharge pipe to prevent the slag discharge pipe from being blocked, and a reflux pool connected to the treatment pool is also arranged on the side wall of the treatment pool, and a dosing pipe inserted into the treatment pool is arranged in the reflux pool.

[0012] Furthermore, a water inlet area, a stirring area, a sedimentation area, a filtration area and a drainage area are sequentially opened in the treatment pool, the water inlet pipe is connected to the water inlet area, and the water outlet pipe is connected to the drainage area.

[0013] Furthermore, a reflux pipe is provided in the reflux pool, and the reflux pipe is used to connect the filtration area, the reflux pool and the water inlet area.

[0014] Furthermore, one end of the dosing pipe is connected to the stirring zone, and the other end of the dosing pipe enters the reflux tank and extends upward, and a dosing funnel is arranged at the end.

[0015] Furthermore, a stirring blade is provided in the stirring zone, and the stirring blade is driven to rotate by a driving motor installed above the treatment tank.

[0016] In order to improve the stirring quality of the stirring blade and prevent stratification, the stirring blade can be set as an inclined plate or a spiral stirring blade inclined upward.

[0017] Furthermore, an adsorption block and a filter slot plate are arranged above the filter area, and the filter slot plate is arranged above the adsorption block and keeps the end thereof in communication with the drainage area.

[0018] Furthermore, the cross-sectional shape of the filter slot plate is C-shaped, with its open end facing upward, and filter holes are arranged on both sides of the open end of the filter slot plate.

[0019] The utility model has the following beneficial effects:

[0020] The wastewater treatment device can not only conveniently treat heavy metal wastewater, but also can treat other wastewater in and out. During the treatment process, combined with the reflow tank, it is convenient to detect the results of wastewater treatment in real time, and convenient to control the amount of neutralizing agent added according to the result, so as to facilitate the continuous treatment of wastewater. In addition, the wastewater treatment device is provided with a slag discharge pipe connected to the inside of the treatment tank at the bottom, which is convenient for discharging impurities insoluble in water after precipitation, thereby facilitating subsequent wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is the front view of the utility model;

[0023] Figure 3 It is a side view of the utility model;

[0024] Figure 4 It is a top view of the utility model;

[0025] Figure 5 yes Figure 3 Sectional view of AA in the middle;

[0026] Figure 6 and Figure 7 It is a structural schematic diagram of the utility model from another perspective;

[0027] Figure 8 It is a structural schematic diagram of the treatment tank and the reflow tank in the utility model;

[0028] In the figure: 1. Treatment tank; 1.1. Water inlet area; 1.2. Stirring area; 1.3. Sedimentation area; 1.4. Filtration area; 1.5. Drainage area; 2. Water inlet pipe; 3. Recirculation tank; 4. Dosing funnel; 5. Valve; 6. Driving motor; 7. Adsorption block; 8. Filter trough plate; 9. Water outlet pipe; 10. High-pressure pipe; 11. Recirculation pipe; 12. Dosing pipe; 13. Slag discharge pipe; 14. Connecting pipe; 15. Stirring impeller. DETAILED DESCRIPTION

[0029] The following will be combined with the attached Figure 1-Figure 8 The utility model is described in detail in order to solve the problem that the filter plate is easily clogged when filtering wastewater through the filter plate in the existing wastewater treatment device recorded in the above content, and solid impurities cannot be cleaned, affecting the subsequent wastewater treatment. At the same time, during the wastewater treatment process, the mixing amount of internal wastewater and drugs cannot be detected in real time, which makes it inconvenient to achieve continuous wastewater treatment.

[0030] The utility model provides a heavy metal wastewater treatment device through improvement, which can be implemented as follows: a heavy metal wastewater treatment device, including a treatment pool 1, wherein a plurality of areas are opened in the treatment pool 1 for facilitating wastewater treatment, and two adjacent areas are connected to each other, and an inlet pipe 2 and an outlet pipe 9 connected to the internal area are respectively arranged on both sides of the treatment pool 1, and a slag discharge pipe 13 is also arranged at the bottom of the treatment pool 1, and the slag discharge pipe 13 is respectively connected to each internal area of ​​the treatment pool 1 through a connecting pipe 14, and a valve 5 is arranged at the end of the slag discharge pipe 13, and a high-pressure pipe 10 is arranged at the other end of the slag discharge pipe 13 to prevent the slag discharge pipe 13 from being blocked, and a reflux pool 3 connected to the treatment pool 1 is also arranged on the side wall of the treatment pool 1, and a dosing pipe 12 inserted into the treatment pool 1 is arranged in the reflux pool 3.

[0031] Through the above, the slag discharge pipe is set at the bottom of the treatment tank, and the solid impurities generated after the wastewater treatment are precipitated to the bottom of the treatment tank, reducing the contact with the filter plate, effectively reducing the clogging of the filter plate, and finally discharged directly from the bottom, which is convenient for filtration and separation. At the same time, a reflux tank connected to the outside of the treatment tank is set, which can facilitate real-time detection of the internal wastewater, so as to determine whether the ratio of the wastewater amount to the drug amount corresponds, and facilitate continuous treatment of the wastewater after adjustment, thereby improving the wastewater treatment efficiency.

[0032] In this embodiment, the treatment pool 1 is provided with an inlet area 1.1, a stirring area 1.2, a sedimentation area 1.3, a filtration area 1.4 and a drainage area 1.5 in sequence, the inlet pipe 2 is connected to the inlet area 1.1, and the outlet pipe 9 is connected to the drainage area 1.5.

[0033] In this embodiment, a reflux pipe 11 is provided in the reflux pool 3, and the reflux pipe 11 is used to connect the filtering area 1.4, the reflux pool 3 and the water inlet area 1.1.

[0034] In this embodiment, one end of the dosing pipe 12 is connected to the stirring zone 1.2, and the other end of the dosing pipe 12 enters the reflow tank 3 and extends upward, and a dosing funnel 4 is arranged at the end.

[0035] In this embodiment, a stirring blade 15 is provided in the stirring zone 1.2, and the stirring blade 15 is driven to rotate by a driving motor 6 installed above the treatment tank 1.

[0036] In this embodiment, an adsorption block 7 (which may be an activated carbon adsorption block) and a filter trough plate 8 are arranged above the filter area 1.4. The filter trough plate 8 is arranged above the adsorption block 7 and keeps its end connected with the drainage area 1.5.

[0037] In this embodiment, the cross-sectional shape of the filter slot plate 8 is C-shaped, with its open end facing upward, and filter holes are provided on both sides of the open end of the filter slot plate 8 .

[0038] By setting the filter trough plate in a C shape, it is convenient to discharge the clean water after the wastewater treatment.

[0039] Method for using the wastewater treatment device

[0040] 1. Close the valve 5 where the slag discharge pipe 13 is located, and add wastewater into the water inlet area 1.1 through the water inlet pipe 2.

[0041] 2. Add neutralizing reagent into the stirring zone 1.2 through the dosing funnel 4 and the dosing tube 12, and start the driving motor 6 to drive the stirring blade 15 to rotate. At this time, the wastewater in the water inlet zone 1.1 reaches a certain liquid level and enters the stirring zone 1.2.

[0042] 3. The wastewater in the stirring zone 1.2 contacts and reacts with the neutralizing agent, and is kept fully mixed and reacted under the rotation of the stirring blade 15, thereby generating water-insoluble impurities.

[0043] 4. After the wastewater after the reaction in the stirring zone 1.2 reaches a certain liquid level, it enters the sedimentation zone 1.3 for static sedimentation, and the impurities insoluble in water are precipitated to the bottom.

[0044] 5. When the water in the sedimentation area 1.3 reaches a certain liquid level, it enters the filtration area 1.4. At the same time, when it rises to a certain liquid level, it enters the reflow tank 3 through the reflux pipe 11. At this time, the staff can observe the wastewater treatment situation and make adjustments.

[0045] 6. If the quality of wastewater treatment is poor, increase the flow rate of the neutralizing agent and conduct real-time testing until the quality of wastewater treatment is qualified.

[0046] 7. The water level in the filtration area 1.4 continues to rise, passes through the adsorption block 7 and the filter slot plate 8, enters the drainage area 1.5, and is finally discharged from the outlet pipe 9, thereby realizing continuous treatment of wastewater.

[0047] When it is necessary to clean the internal impurities, first close the water inlet pipe 2 and the dosing pipe 12, open the valve 5 and start the high-pressure pipe 10, and the water and impurities in various areas of the treatment pool 1 enter the slag discharge pipe 13 through the connecting pipe 14 and are discharged for subsequent filtration.

[0048] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A heavy metal wastewater treatment device, characterized in that: It includes a treatment pool, which is provided with multiple areas for facilitating wastewater treatment, and two adjacent areas are connected to each other. A water inlet pipe and a water outlet pipe connected to the internal area are respectively arranged on both sides of the treatment pool. A slag discharge pipe is also arranged at the bottom of the treatment pool. The slag discharge pipe is respectively connected to various internal areas of the treatment pool through connecting pipes, and a valve is arranged at the end of the slag discharge pipe. A high-pressure pipe is arranged at the other end of the slag discharge pipe to prevent the slag discharge pipe from being blocked. A reflux pool connected to the treatment pool is also arranged on the side wall of the treatment pool, and a dosing pipe inserted into the treatment pool is arranged in the reflux pool.

2. A heavy metal wastewater treatment device according to claim 1, characterized in that: The treatment pool is provided with a water inlet area, a stirring area, a sedimentation area, a filtering area and a drainage area in sequence. The water inlet pipe is connected to the water inlet area, and the water outlet pipe is connected to the drainage area.

3. A heavy metal wastewater treatment device according to claim 2, characterized in that: A reflux pipe is arranged in the reflux pool, and the reflux pipe is used to connect the filtering area, the reflux pool and the water inlet area.

4. A heavy metal wastewater treatment device according to claim 2, characterized in that: One end of the dosing pipe is connected to the stirring zone, and the other end of the dosing pipe enters the reflux tank and extends upward, and a dosing funnel is arranged at the end.

5. A heavy metal wastewater treatment device according to claim 2, characterized in that: The stirring zone is provided with stirring vanes, which are driven to rotate by a driving motor installed above the treatment tank.

6. A heavy metal wastewater treatment device according to claim 2, characterized in that: An adsorption block and a filter slot plate are arranged above the filter area. The filter slot plate is arranged above the adsorption block and keeps the end thereof in communication with the drainage area.

7. A heavy metal wastewater treatment device according to claim 6, characterized in that: The cross-sectional shape of the filter slot plate is C-shaped, with its open end facing upward, and filter holes are arranged on both sides of the open end of the filter slot plate.

Images