A heavy metal wastewater treatment tank

Abstract

The utility model discloses a kind of heavy metal wastewater treatment tanks, relate to wastewater treatment technical field.The utility model includes tank body, and the inlet pipe is arranged in tank body top side, and tank body top is provided with static sinking mechanism;The flocculation mechanism is arranged at the bottom of static sinking mechanism, and multiple liquid controls are mounted between static sinking mechanism and flocculation mechanism along tank body circumferential surface.This utility model is provided with static sinking mechanism and inlet pipe in tank body top, large particle impurities in wastewater are carried out static sinking by the help of inclined plate sediment block, and are discharged by sludge discharge pipe, then the liquid control valve of liquid control is opened, and pretreated wastewater is transported to the inside of flocculation mechanism at tank body bottom, the separation control of large particle impurities and small particle impurities treatment in wastewater treatment stage is carried out by the help of liquid control, avoid the interference of large particle impurities cleaning not thoroughly to flocculation process, improve the quality of heavy metal wastewater treatment.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to a heavy metal wastewater treatment tank. Background Technology

[0002] Heavy metal wastewater treatment tanks are key equipment used to remove heavy metal ions from wastewater. These include types such as sedimentation tanks and adsorption tanks. These treatment tanks can be adapted to different wastewater properties and treatment requirements to reduce the concentration of heavy metals so that they meet emission standards or can be reused.

[0003] The patent specification with announcement number CN219010025U discloses a heavy metal wastewater treatment and recycling device, including a treatment tank. The top wall of the treatment tank is welded with a thick pipe and a thin pipe, and a motor is welded at the center of the top wall of the treatment tank. The output shaft of the motor is coaxially connected to an inner support shaft. Multiple stirring blades are fixedly sleeved on the inner support shaft. An extension pipe is welded to the inner cavity of the treatment tank. A distribution plate is also fixedly sleeved on the inner support shaft. A distribution groove is formed on the distribution plate by rotating and cutting along its vertical axis. The inner walls on both sides of the distribution groove are sloped.

[0004] This type of heavy metal wastewater treatment equipment uses a filter screen to remove large particles of sediment from the wastewater. Flocculants are then added through a distribution plate to react and generate flocs, thus treating the heavy metal wastewater. However, this technology has drawbacks. Before flocculation, the heavy metal wastewater contains a large amount of large particles of sediment. These particles flow through the filter screen at extremely high speeds, meaning the filter interception is instantaneous, resulting in poor removal of large particles. Furthermore, the spaces for sediment interception and flocculation are interconnected. Due to insufficient sediment interception, the wastewater entering the flocculation space contains both incompletely cleaned large particles and unflocculated small particles. This significantly increases the burden on flocculation, meaning the interconnected structure leads to poor removal of large impurities, affecting the subsequent flocculation treatment effect.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] The purpose of this utility model is to provide a heavy metal wastewater treatment tank, and the technical problem to be solved is as follows: When the existing heavy metal wastewater treatment tank is used for wastewater treatment, the cleaning effect of large particulate impurities is poor, and the poor cleaning result of large particulate impurities will further affect the flocculation and impurity removal process.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A heavy metal wastewater treatment tank includes a tank body, an inlet pipe provided on one side of the top of the tank body, a sedimentation mechanism provided on the top of the tank body, a flocculation mechanism provided at the bottom of the sedimentation mechanism, and at least three liquid control components installed along the periphery of the tank body between the sedimentation mechanism and the flocculation mechanism, the liquid control components being used to adjust the communication state between the sedimentation mechanism and the flocculation mechanism.

[0009] As a further embodiment of this utility model: the settling mechanism includes a settling chamber disposed at the top of the inner side of the tank, a sludge hopper disposed at the bottom of the settling chamber, an inclined plate settling block fixedly connected between the middle of the settling chamber and the tank body, a sludge discharge pipe installed at the bottom of the sludge hopper, and the sludge discharge pipe extending to the outside of the tank body.

[0010] As a further embodiment of this utility model: the inclined plate sedimentation block has sedimentation square holes evenly arranged vertically, the sedimentation square holes are at an angle of - degrees with the horizontal plane, and the bottom surface of the inclined plate sedimentation block is separated from the top of the mud hopper.

[0011] As a further embodiment of this utility model: the liquid control component includes a U-shaped tube, and a liquid control valve is installed on the top of the U-shaped tube.

[0012] As a further embodiment of this utility model: the top opening of the U-shaped tube is located between the top of the mud-gathering hopper and the bottom surface of the inclined plate sedimentation block, and the bottom opening is located below the mud-gathering hopper.

[0013] As a further embodiment of this utility model: the flocculation mechanism includes a flocculation chamber disposed at the bottom of the tank, a stirring motor is installed at the bottom of the tank, a stirring blade is installed at the output end of the stirring motor, an addition pipe is disposed on one side of the tank, a water outlet pipe is disposed on one side of the bottom of the tank, and a flocculation discharge pipe is installed at the bottom of the tank.

[0014] As a further embodiment of this utility model: the stirring blade is configured as a double layer, the bottom of the adding pipe is an inclined pipe and is higher than the top stirring blade, and the installation height of the water outlet pipe is located between the adding pipe and the flocculation discharge pipe.

[0015] The beneficial effects of this utility model are:

[0016] By installing a settling mechanism and inlet pipe at the top of the tank, large particulate impurities in the wastewater are settled for a period of time using inclined plate sedimentation blocks, and finally discharged through the sludge discharge pipe. Then, the pretreated wastewater is transported to the flocculation mechanism at the bottom of the tank by opening the liquid control valve of the liquid control component, and then the wastewater undergoes flocculation treatment. Its technical advantage lies in the effective discharge of large particulate impurities in the wastewater by setting up an independent settling mechanism, and the separation and control of the wastewater treatment stages by using the liquid control component, so as to avoid interference of the flocculation process by incomplete removal of large particulate impurities, thereby improving the quality of heavy metal wastewater treatment. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the present invention.

[0020] In the diagram: 1. Tank body; 2. Liquid inlet pipe; 3. Sedimentation mechanism; 31. Sedimentation chamber; 32. Sludge hopper; 33. Inclined plate sedimentation block; 34. Sludge discharge pipe; 35. Sedimentation square hole; 4. Flocculation mechanism; 41. Flocculation chamber; 42. Agitator motor; 43. Agitator blade; 44. Addition pipe; 45. Water outlet pipe; 46. Flocculation discharge pipe; 5. Liquid control component; 51. U-shaped pipe; 52. Liquid control valve; 6. Air outlet pipe; 7. Manhole; 8. Support column. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] like Figures 1 to 2 As shown, a heavy metal wastewater treatment tank includes a tank body 1, an inlet pipe 2 is provided on one side of the top of the tank body 1, a settling mechanism 3 is provided at the top inside the tank body 1, a flocculation mechanism 4 is provided at the bottom of the settling mechanism 3, and four liquid control components 5 are installed along the periphery of the tank body 1 between the settling mechanism 3 and the flocculation mechanism 4. The liquid control components 5 are used to adjust the communication state between the settling mechanism 3 and the flocculation mechanism 4.

[0023] It should be noted that an air outlet pipe 6 is provided at the top of the tank body 1. The air outlet pipe 6 is used to balance the air pressure inside the tank body 1 during the liquid inlet process. A manhole 7 is provided at the top of the tank body 1. The manhole 7 is used by personnel to enter the tank body 1 for regular cleaning and maintenance. Three support columns 8 are evenly arranged along the circumferential side of the bottom of the tank body 1 to support the tank body 1 and provide space for the installation of components of the flocculation mechanism 4.

[0024] The settling mechanism 3 includes a settling chamber 31 located at the top of the inner side of the tank body 1, a sludge hopper 32 located at the bottom of the settling chamber 31, an inclined plate settling block 33 fixedly connected between the middle of the settling chamber 31 and the tank body 1, and a sludge discharge pipe 34 installed at the bottom of the sludge hopper 32, which extends to the outside of the tank body 1.

[0025] The inclined plate sedimentation block 33 has a large number of sedimentation square holes 35 evenly arranged in the vertical direction. The angle between the sedimentation square holes 35 and the horizontal plane is 60 degrees. The bottom surface of the inclined plate sedimentation block 33 is separated from the top of the mud hopper 32.

[0026] It should be noted that the heavy metal wastewater to be treated is fed into the sedimentation chamber 31 through the inlet pipe 2. Larger particles in the wastewater then fall into the inclined plate sedimentation block 33. Since the inclined plate sedimentation block 33 is provided with uniformly arranged sedimentation square holes 35, it can quickly stabilize the wastewater entering the tank 1 in a turbulent state, and greatly increase the effective settling area, thereby improving the settling effect of large particles. In addition, this settling process is independent of the flocculation process in the flocculation mechanism 4 and is continuous. Compared with the use of filter plates, it can greatly improve the removal effect of large particles. Since the bottom surface of the sludge hopper 32 is separated from the inclined plate sedimentation block 33 and is funnel-shaped, the settled impurities fall into the sludge hopper 32. After settling for a period of time, the large particles can be cleaned by opening the sludge discharge pipe 34.

[0027] The liquid control component 5 includes a U-shaped tube 51, and a liquid control valve 52 is installed at the top of the U-shaped tube 51;

[0028] The top opening of the U-shaped tube 51 is located between the top of the mud hopper 32 and the bottom surface of the inclined plate sedimentation block 33, and the bottom opening is located below the mud hopper 32.

[0029] It should be noted that after the settling mechanism 3 has settled the large particulate impurities in the wastewater and discharged them through the sludge discharge pipe 34, there are no more large particulate impurities in the wastewater. Then, the liquid control valve 52 is opened, and the wastewater with the large particulate impurities removed enters the flocculation mechanism 4 through the U-shaped pipe 51. That is, the timing of the wastewater entering the flocculation mechanism 4 is controlled by the liquid control component 5, which separates the removal process of large particulate impurities from the flocculation process in wastewater treatment. This allows sufficient time for the thorough removal of large particulate impurities and avoids the impact of insufficient removal of large particulate impurities on the flocculation process, thereby improving the final wastewater treatment effect.

[0030] The flocculation mechanism 4 includes a flocculation chamber 41 located at the bottom of the tank 1, a stirring motor 42 installed at the bottom of the tank 1, a stirring blade 43 installed at the output end of the stirring motor 42, an addition pipe 44 installed on one side of the tank 1, a water outlet pipe 45 installed on one side of the bottom of the tank 1, and a flocculation discharge pipe 46 installed at the bottom of the tank 1.

[0031] The stirring blade 43 is double-layered, the bottom of the adding pipe 44 is an inclined pipe and is higher than the top stirring blade 43, and the installation height of the water outlet pipe 45 is between the adding pipe 44 and the filament discharge pipe 46.

[0032] It should be noted that after initial cleaning, the wastewater enters the flocculation discharge pipe 46 through the liquid control device 5. Then, the stirring motor 42 is started to stir the wastewater. At the same time, sodium hydroxide and calcium hydroxide are added through the addition pipe 44 to adjust the pH value, which reacts the insoluble heavy metal ions to generate insoluble precipitates such as hydroxides and sulfides. Then, polyacrylamide (PAM) flocculant is added through the addition pipe 44 to react and accumulate the insoluble precipitates into flocs. After standing for a period of time, the flocs accumulate at the bottom of the funnel-shaped tank 1 and are finally discharged through the flocculation discharge pipe 46. Finally, the outlet pipe 45 is opened to discharge the treated wastewater. During this process, since the flocculated flocs will eventually fall to the bottom of the tank 1, the flocculation discharge pipe 46 is set at the bottom. The addition pipe 44 is positioned higher to facilitate the addition of reactants and flocculants. The outlet pipe 45 is opened at a height slightly higher than the flocculation discharge pipe 46 to improve the quality of the discharged water and prevent some flocs from being discharged from here, thereby improving the treatment effect of heavy metal wastewater.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A heavy metal wastewater treatment tank, comprising a tank body (1), wherein an inlet pipe (2) is provided on one side of the top of the tank body (1), characterized in that, The tank (1) is provided with a settling mechanism (3) at the top; a flocculation mechanism (4) is provided at the bottom of the settling mechanism (3); at least three liquid control components (5) are installed between the settling mechanism (3) and the flocculation mechanism (4) along the periphery of the tank (1); the liquid control components (5) are used to adjust the communication state between the settling mechanism (3) and the flocculation mechanism (4).

2. The heavy metal wastewater treatment tank according to claim 1, characterized in that, The settling mechanism (3) includes a settling chamber (31) located at the top of the inner side of the tank (1). A mud collection hopper (32) is provided at the bottom of the settling chamber (31). An inclined plate settling block (33) is fixedly connected between the middle of the settling chamber (31) and the tank (1). A mud discharge pipe (34) is installed at the bottom of the mud collection hopper (32). The mud discharge pipe (34) extends to the outside of the tank (1).

3. The heavy metal wastewater treatment tank according to claim 2, characterized in that, The inclined plate sedimentation block (33) has sedimentation square holes (35) evenly arranged vertically. The angle between the sedimentation square holes (35) and the horizontal plane is 55-65 degrees. The bottom surface of the inclined plate sedimentation block (33) is separated from the top surface of the mud hopper (32).

4. A heavy metal wastewater treatment tank according to claim 2, characterized in that, The liquid control component (5) includes a U-shaped tube (51), and a liquid control valve (52) is installed on the top of the U-shaped tube (51).

5. A heavy metal wastewater treatment tank according to claim 4, characterized in that, The top opening of the U-shaped tube (51) is located between the top of the mud-gathering hopper (32) and the bottom surface of the inclined plate sedimentation block (33), and the bottom opening is located below the mud-gathering hopper (32).

6. A heavy metal wastewater treatment tank according to claim 1, characterized in that, The flocculation mechanism (4) includes a flocculation chamber (41) located at the bottom of the tank (1), a stirring motor (42) installed at the bottom of the tank (1), a stirring blade (43) installed at the output end of the stirring motor (42), an addition pipe (44) provided on one side of the tank (1), a water outlet pipe (45) provided on one side of the bottom of the tank (1), and a flocculation discharge pipe (46) installed at the bottom of the tank (1).

7. A heavy metal wastewater treatment tank according to claim 6, characterized in that, The stirring blade (43) is configured as a double layer, the bottom of the adding pipe (44) is an inclined pipe and is higher than the top stirring blade (43), and the installation height of the water outlet pipe (45) is between the adding pipe (44) and the filament discharge pipe (46).

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