A heavy metal wastewater treatment device and method

Abstract

This invention relates to the field of wastewater treatment equipment, and more particularly to a heavy metal wastewater treatment device and method, comprising a wastewater treatment tank, the wastewater treatment tank including an upper tank body, a chemical inlet chamber fixedly connected to the middle of the top of the upper tank body, a servo motor installed at the top of the chemical inlet chamber, a rotating shaft fixedly connected to the bottom drive end of the servo motor, a chemical inlet pipe fixedly connected to the middle of one side of the chemical inlet chamber, an opening provided at the bottom of the chemical inlet chamber, the opening penetrating the middle of the top of the upper tank body, a limit ring fixedly connected to the top of the upper tank body, a chemical distribution chamber rotatably connected inside the limit ring, a heating plate installed in the middle of the chemical distribution chamber, a reserved opening provided in the middle of the heating plate, and uniformly distributed preset holes opened at the bottom of the chemical distribution chamber. This invention can avoid the situation where the wastewater is agitated and splashes upwards during stirring, and metal impurities remain on the upper wall of the wastewater treatment tank and cannot flow back.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment, and more particularly to a heavy metal wastewater treatment equipment and method. Background Technology

[0002] Heavy metal wastewater originates from various stages of production and daily life. Its defining characteristic is the presence of large amounts of heavy metals. Currently, this type of wastewater is among the most polluted industrial wastewaters and poses the greatest threat to human health. While traditional wastewater treatment processes employ flocculants and gravity sedimentation of suspended solids, the actual results are not ideal, with low sedimentation efficiency and weak heavy metal removal capabilities. Furthermore, the agitation during wastewater treatment often causes water to rise, resulting in metal impurities remaining on the upper wall of the wastewater treatment tank and failing to flow back. The precipitated metal impurities solidify inside the treatment equipment, making them difficult to clean and hindering long-term wastewater treatment. Therefore, we propose a heavy metal wastewater treatment device and method to address the aforementioned problems. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by proposing a heavy metal wastewater treatment device and method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a heavy metal wastewater treatment device, comprising a wastewater treatment tank, the wastewater treatment tank comprising an upper tank body, a drug inlet chamber fixedly connected to the middle of the top of the upper tank body, a servo motor installed at the top of the drug inlet chamber, a rotating shaft fixedly connected to the bottom drive end of the servo motor, a drug inlet pipe fixedly connected to the middle of one side of the drug inlet chamber, an opening provided at the bottom of the drug inlet chamber, the opening penetrating the middle of the top of the upper tank body, a limiting ring fixedly connected to the top of the upper tank body, a drug distribution chamber rotatably connected inside the limiting ring, a heating plate installed in the middle of the drug distribution chamber, a reserved opening provided in the middle of the heating plate, and evenly distributed preset holes opened at the bottom of the drug distribution chamber, the drug distribution chamber being fixedly connected to the upper part of the outer periphery of the rotating shaft.

[0005] Preferably, a lower bucket is provided at the bottom of the upper bucket, a base frame is fixedly connected to the lower periphery of the lower bucket, a drain pipe is provided inside the base frame, the drain pipe is installed in the middle of the bottom end of the lower bucket, and a valve body is installed at one end of the drain pipe.

[0006] Preferably, the upper barrel body is provided with an inner cylinder, and a vertical barrel is installed in the middle of the inner cylinder by a fixing frame. A uniformly distributed limiting strip is fixedly connected to the middle of the inner side wall of the vertical barrel, and a threaded part is provided in the middle of the rotating shaft.

[0007] Preferably, the threaded part is threadedly connected to a sliding plate in the middle, and the sliding plates are all slidably connected to the inside of the vertical barrel through a limiting strip. The threaded part is located on the inner side of the vertical barrel, and the upper and lower parts of the vertical barrel are provided with evenly distributed through holes.

[0008] Preferably, the lower outer periphery of the inner cylinder has evenly distributed openings, each of which is equipped with a filter screen. The outer side of the inner cylinder is provided with a water filtration chamber, and the bottom of the water filtration chamber is provided with multiple drain ports, each of which is equipped with a valve body.

[0009] Preferably, an adsorption cylinder is installed in the upper part of the lower barrel, the upper part of the adsorption cylinder is provided with a water inlet, the lower part of the adsorption cylinder is provided with a water outlet, the water outlet is located inside the lower barrel, the water inlet is located in the lower part of the inner cylinder, and the adsorption cylinder is provided with filter particles and adsorption particles.

[0010] Preferably, a base is installed at the bottom of the lower barrel, and heating tubes are evenly distributed on the top of the base, with the heating tubes surrounding the outside of the adsorption cylinder.

[0011] Preferably, a plurality of stirring racks are fixedly connected to the lower outer periphery of the rotating shaft, and stirring rods are fixedly connected to the inner side of each stirring rack.

[0012] Preferably, water inlets are installed on the upper parts of both sides of the upper tank, and a control panel is installed on the front side of the upper tank. The control panel is electrically connected to the servo motor, the heating plate and the base.

[0013] Preferably, a method for treating heavy metal wastewater includes the following steps:

[0014] S1. Wastewater enters the filter chamber inside the upper tank through the inlet and enters the inner cylinder through the opening at the bottom of the inner cylinder. The filter screen installed in the opening can filter particulate impurities in the wastewater, and the filtered wastewater will enter the inner cylinder.

[0015] S2. When treating sewage, people can start the servo motor through the control panel. The operation of the servo motor can drive the rotating shaft to rotate. When sewage enters, people can add treatment agents into the sewage treatment tank through the inlet pipe.

[0016] S3. The stirring frame fixed at the lower part of the outer periphery of the rotating shaft can stir the sewage inside the inner cylinder to achieve full mixing of sewage and treatment agent, so that the agent can take effect more quickly. During the rapid relative movement between the stirring rod on the inner side of the stirring frame and the sewage, according to the Bernoulli effect, the sewage will form turbulence at the movement trajectory of the stirring rod. At the same time, the continuously rotating stirring frame can divide the turbulence formed at the front, thus mixing the sewage and treatment agent.

[0017] S4. During the rotation of the shaft, under the action of the limiting strip inside the vertical tank, the threaded part on the shaft can drive the sliding plate to slide up and down inside the vertical tank. When the sliding plate moves up and down inside the vertical tank, it will compress the water inside the vertical tank to be discharged outward. When the water inside the vertical tank is discharged outward through the through hole, it will form jets that impact the upper and lower parts of the inner cylinder, thus preventing metal impurities from remaining on the inner wall of the sewage treatment tank and being unable to flow back.

[0018] S5. After being treated and purified by the chemical agent, the wastewater will enter the adsorption cylinder through the water inlet. The adsorption material inside the adsorption cylinder can further filter and adsorb the purified wastewater.

[0019] S6. After passing through the adsorption cylinder, the wastewater will be discharged through the outlet and enter the lower tank. The heating pipe inside the lower tank can heat, disinfect, and purify the water, so that the discharged water can meet the discharge standards.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] During the rotation of the shaft, under the action of the limiting strip inside the vertical tank, the threaded part on the shaft can drive the sliding plate to slide up and down inside the vertical tank. When the sliding plate moves up and down inside the vertical tank, it will compress the water inside the vertical tank to be discharged outward. When the water inside the vertical tank is discharged outward through the through hole, it will form jets. When the sliding plate moves downward, the downward jet will impact the lower part of the inner cylinder, preventing the settled metal impurities from solidifying inside the inner cylinder and being difficult to clean. At the same time, it can backwash the filter screen to prevent the filter screen from clogging and affecting the entry of sewage. When the sliding plate moves upward, the upward jet will impact the upper part of the inner cylinder, preventing some treatment agents from being spilled onto the inner wall of the inner cylinder without contacting the sewage. At the same time, it can prevent the sewage from being stirred up and splashed upward during agitation, and prevent metal impurities from remaining on the upper wall of the sewage treatment tank and not being able to flow back. This is beneficial to the practical application in sewage treatment.

[0022] When wastewater enters, treatment agents are added to the wastewater treatment tank through the inlet pipe. After entering the inlet chamber, the agents fall into the distribution chamber through the outlet. The rotating shaft drives the distribution chamber to rotate synchronously, thereby increasing the distribution area of ​​the treatment agents through centrifugal force, allowing the agents to combine with the wastewater more quickly. The heating plate inside the distribution chamber heats the flowing treatment agents, which are then discharged through pre-set holes at the bottom of the distribution chamber and distributed into the wastewater to treat it. By heating the treatment agents, the thermal motion of the molecules when the agents come into contact with the wastewater effectively increases the combination rate between the treatment agents and the wastewater, which helps to improve the wastewater treatment speed.

[0023] The stirring frame fixed to the lower part of the outer periphery of the rotating shaft can agitate the sewage inside the inner cylinder, achieving thorough mixing of the sewage and treatment agents, allowing the agents to take effect more quickly. Due to the rapid relative movement between the stirring rod and the sewage, the sewage creates turbulence along the moving path of the stirring rod, as per Bernoulli's effect. The continuously rotating stirring frame further breaks up this turbulence, increasing the disorder and uncertainty of the water flow inside the inner cylinder, thus effectively improving the mixing effect of the sewage and treatment agents. Additionally, the inclined shape of the stirring rod and the middle section of the stirring frame creates a downward vortex inside the inner cylinder, effectively enhancing the aggregation and precipitation of heavy metals precipitated from the sewage.

[0024] After being purified by chemical treatment, wastewater enters the adsorption tank through the inlet. The adsorption material inside the tank further filters and adsorbs the purified wastewater. After passing through the adsorption tank, the wastewater is discharged through the outlet into the lower tank. Heating and disinfection are achieved through heating pipes inside the lower tank. Through a process of sedimentation followed by filtration, chemical separation, and adsorption, and then heating and disinfection at the effluent, multi-stage wastewater treatment is achieved. This ensures that the discharged water meets emission standards, fully protecting and recycling water resources, and reducing environmental pollution. Attached Figure Description

[0025] Figure 1 This is a frontal three-dimensional structural schematic diagram of a heavy metal wastewater treatment device and method according to the present invention;

[0026] Figure 2 This is a front view schematic diagram of the internal structure of a heavy metal wastewater treatment device and method according to the present invention;

[0027] Figure 3 This is a front view of a partial internal structure of the upper and lower tanks of a heavy metal wastewater treatment device and method according to the present invention.

[0028] Figure 4 This is a bottom view of a partial internal structure of the upper and lower tanks of a heavy metal wastewater treatment device and method according to the present invention.

[0029] Figure 5 This is a partial structural diagram of the adsorption cylinder of a heavy metal wastewater treatment device and method according to the present invention;

[0030] Figure 6 This is a partial structural diagram of the dosing chamber of a heavy metal wastewater treatment device and method according to the present invention;

[0031] Figure 7 This is a partial structural diagram of the vertical tank section of a heavy metal wastewater treatment device and method according to the present invention.

[0032] 1. Wastewater treatment tank; 101. Upper tank body; 102. Lower tank body; 103. Servo motor; 104. Chemical inlet pipe; 105. Water inlet; 106. Control panel; 107. Base frame; 108. Drain pipe; 109. Filter screen; 110. Inner cylinder; 111. Chemical distribution chamber; 112. Chemical inlet cavity; 113. Limiting strip; 114. Heating tube; 115. Adsorption cylinder; 116. Water outlet; 117. Base; 118. Stirring rod; 119. Stirring frame; 120. Filtering chamber; 121. Fixing frame; 122. Water inlet; 123. Through hole; 124. Vertical tank; 125. Opening; 126. Limiting ring; 127. Slide plate; 128. Threaded part; 129. Rotating shaft; 130. Opening. Detailed Implementation

[0033] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0034] like Figures 1-7 The heavy metal wastewater treatment equipment shown includes a wastewater treatment tank 1, which includes an upper tank body 101. A chemical inlet chamber 112 is fixedly connected to the middle of the top of the upper tank body 101. A servo motor 103 is installed on the top of the chemical inlet chamber 112, and a rotating shaft 129 is fixedly connected to the bottom drive end of the servo motor 103. A chemical inlet pipe 104 is fixedly connected to the middle of one side of the chemical inlet chamber 112. A through-hole 125 is provided at the bottom of the chemical inlet chamber 112, which penetrates the middle of the top of the upper tank body 101. A limit ring is fixedly connected to the top of the upper tank body 101. 126, the medicine distribution chamber 111 is rotatably connected inside the limiting ring 126. A heating plate is installed in the middle of the medicine distribution chamber 111. A reserved opening is provided in the middle of the heating plate. The medicine distribution chamber 111 has evenly distributed preset holes at the bottom. The medicine distribution chamber 111 is fixedly connected to the upper part of the outer periphery of the rotating shaft 129. The lower part of the outer periphery of the inner cylinder 110 has evenly distributed openings 130. A filter screen 109 is installed inside each opening 130. A water filtration chamber 120 is provided on the outside of the inner cylinder 110. Multiple sewage outlets are provided at the bottom of the water filtration chamber 120. A valve body is provided inside each sewage outlet.

[0035] Furthermore, in specific implementation, wastewater enters the filter chamber 120 inside the upper tank 101 through the inlet 105, and then enters the inner cylinder 110 through the opening 130 at the bottom of the inner cylinder 110. The filter screen 109 installed in the opening 130 filters particulate impurities from the wastewater. The filtered wastewater then enters the inner cylinder 110. During wastewater treatment, the servo motor 103 can be activated via the control panel 106. The servo motor 103 drives the rotating shaft 129 to rotate. As wastewater enters, treatment agents can be added to the wastewater treatment tank 1 through the chemical inlet pipe 104. The specific agent can be selected based on the actual heavy metal content. The agent then passes through the inlet... After the drug tube 104 enters the drug inlet chamber 112, it falls into the drug distribution chamber 111 through the port 125. The rotating shaft 129 drives the drug distribution chamber 111 to rotate synchronously, thereby increasing the distribution area of ​​the treatment agent through centrifugal force during rotation, so that the agent can combine with the sewage more quickly. The heating plate inside the drug distribution chamber 111 can heat the flowing treatment agent. Then, the agent can be discharged through the preset hole at the bottom of the drug distribution chamber 111 and distributed into the sewage to treat the sewage. By heating the treatment agent, when the treatment agent comes into contact with the sewage, the thermal motion of the molecules can effectively increase the combination rate of the treatment agent and the sewage, which is conducive to improving the sewage treatment speed.

[0036] The lower barrel 102 is provided at the bottom of the upper barrel 101. A base frame 107 is fixedly connected to the lower part of the outer periphery of the lower barrel 102. A drain pipe 108 is provided inside the base frame 107. The drain pipe 108 is installed in the middle of the bottom end of the lower barrel 102. A valve body is installed at one end of the drain pipe 108. Multiple stirring racks 119 are fixedly connected to the lower part of the outer periphery of the rotating shaft 129. Stirring rods 118 are fixedly connected to the inner side of each stirring rack 119.

[0037] Furthermore, in specific implementation, the stirring frame 119 fixed to the lower outer periphery of the rotating shaft 129 can agitate the sewage inside the inner cylinder 110, achieving thorough mixing of the sewage and treatment agents, allowing the agents to take effect more quickly. During the rapid relative movement between the stirring rod 118 on the inner side of the stirring frame 119 and the sewage, according to the Bernoulli effect, the sewage will create turbulence along the movement trajectory of the stirring rod 118. Simultaneously, the continuously rotating stirring frame 119 can segment the turbulence formed at the front, further enhancing the disorder and uncertainty of the water flow inside the inner cylinder 110, thereby effectively improving the mixing effect of the sewage and treatment agents, which is beneficial for practical use. At the same time, the inclined shape of the stirring rod 118 and the middle section of the stirring frame 119 can form a downward vortex inside the inner cylinder 110, effectively improving the polymerization and precipitation effect of heavy metals precipitated from the sewage, which is also beneficial for practical use.

[0038] The upper barrel 101 has an inner cylinder 110 inside. A vertical barrel 124 is installed in the middle of the inner cylinder 110 through a fixing bracket 121. A uniformly distributed limiting strip 113 is fixedly connected to the middle of the inner side wall of the vertical barrel 124. A threaded part 128 is provided in the middle of the rotating shaft 129. A sliding plate 127 is threadedly connected to the middle of the threaded part 128. The sliding plate 127 is slidably connected to the inside of the vertical barrel 124 through the limiting strip 113. The threaded part 128 is located inside the vertical barrel 124. The vertical barrel 124 has uniformly distributed through holes 123 at both the upper and lower parts.

[0039] Furthermore, in specific implementation, during the rotation of the rotating shaft 129, under the action of the limiting strip 113 inside the vertical tank 124, the threaded part 128 on the rotating shaft 129 can drive the sliding plate 127 to slide up and down inside the vertical tank 124. When the sliding plate 127 moves up and down inside the vertical tank 124, it will compress the water inside the vertical tank 124 to be discharged outward. When the water inside the vertical tank 124 is discharged outward through the through hole 123, it will form jets. When the sliding plate 127 moves downward, the downward jets will impact the lower part of the inner cylinder 110. This design prevents precipitated metal impurities from solidifying inside the inner cylinder 110 and becoming difficult to clean. It also backflushes the filter screen 109 to prevent it from clogging and affecting the entry of sewage. When the slide plate 127 moves upward, the upward jet impacts the upper part of the inner cylinder 110, preventing some treatment agents from being spilled onto the inner wall of the inner cylinder 110 without contacting the sewage. It also prevents the sewage from being agitated and splashing upward during stirring, thus avoiding the situation where metal impurities remain on the upper wall of the sewage treatment tank 1 and cannot flow back. This design is beneficial for practical application in sewage treatment.

[0040] The lower barrel 102 has an adsorption cylinder 115 installed in the upper part, an inlet 122 at the top of the adsorption cylinder 115, and an outlet 116 at the bottom of the adsorption cylinder 115. The outlet 116 is located inside the lower barrel 102, and the inlet 122 is located in the lower part of the inner cylinder 110. The adsorption cylinder 115 contains filter particles and adsorption particles. The lower barrel 102 has a base 117 installed at the bottom, and a uniformly distributed heating tube 114 is installed on the top of the base 117. The heating tube 114 surrounds the outside of the adsorption cylinder 115. The upper barrel 101 has inlets 105 installed on the upper parts of both sides. The upper barrel 101 has a control panel 106 installed on the front side. The control panel 106 is electrically connected to the servo motor 103, the heating plate, and the base 117.

[0041] Furthermore, in specific implementation, after the wastewater is treated and purified by the agent, it enters the interior of the adsorption cylinder 115 through the water inlet 122. The adsorption material inside the adsorption cylinder 115 can further filter and adsorb the purified wastewater. After passing through the adsorption cylinder 115, the wastewater is discharged through the water outlet 116 and enters the lower tank 102. The heating pipe 114 inside the lower tank 102 can heat, disinfect, and purify the water, so that the discharged water can meet the discharge standards, achieve full protection and recycling of water resources, and reduce environmental pollution.

[0042] One method for treating heavy metal wastewater includes the following steps:

[0043] S1. Wastewater enters the filter chamber 120 inside the upper barrel 101 through the inlet 105 and enters the inner cylinder 110 through the opening 130 at the bottom of the inner cylinder 110. The filter screen 109 installed in the opening 130 can filter particulate impurities in the wastewater, and the filtered wastewater will enter the inner cylinder 110.

[0044] S2. When treating sewage, people can start the servo motor 103 through the control panel 106. The operation of the servo motor 103 can drive the rotating shaft 129 to rotate. When sewage enters, people can add treatment agents into the sewage treatment tank 1 through the inlet pipe 104.

[0045] S3. The stirring frame 119 fixed to the lower outer periphery of the rotating shaft 129 can stir the sewage inside the inner cylinder 110 to achieve full mixing of sewage and treatment agent, so that the agent can take effect more quickly. The stirring rod 118 on the inner side of the stirring frame 119 can form turbulence at the movement trajectory of the stirring rod 118 during the rapid relative movement with the sewage, according to the Bernoulli effect. At the same time, the continuously rotating stirring frame 119 can divide the turbulence formed at the front, thus mixing the sewage and treatment agent.

[0046] S4. During the rotation of the rotating shaft 129, under the action of the limiting strip 113 inside the vertical tank 124, the threaded part 128 on the rotating shaft 129 can drive the sliding plate 127 to slide up and down inside the vertical tank 124. When the sliding plate 127 moves up and down inside the vertical tank 124, it will compress the water inside the vertical tank 124 to be discharged outward. When the water inside the vertical tank 124 is discharged outward through the through hole 123, it will form jets that impact the upper and lower parts inside the inner cylinder 110, thus preventing the situation where metal impurities remain on the inner wall of the sewage treatment tank 1 and cannot flow back.

[0047] S5. After being treated and purified by the agent, the wastewater will enter the interior of the adsorption cylinder 115 through the water inlet 122 on the adsorption cylinder 115. The adsorption material inside the adsorption cylinder 115 can further filter and adsorb the purified wastewater.

[0048] S6. After passing through the adsorption cylinder 115, the wastewater will be discharged through the outlet 116 and enter the lower tank 102. The heating pipe 114 inside the lower tank 102 can heat, disinfect and purify the water, so that the discharged water can meet the discharge standards.

[0049] Working principle:

[0050] In actual use, sewage enters the filter chamber 120 inside the upper tank 101 through the inlet 105, and then enters the inner cylinder 110 through the opening 130 at the bottom of the inner cylinder 110. The filter screen 109 installed in the opening 130 can filter particulate impurities in the sewage. The filtered sewage then enters the inner cylinder 110. When treating sewage, the servo motor 103 can be started through the control panel 106. The operation of the servo motor 103 can drive the rotating shaft 129 to rotate. When sewage enters, the treatment agent can be added into the sewage treatment tank 1 through the inlet pipe 104. After the agent enters the inlet chamber 112 through the inlet pipe 104, it falls into the distribution chamber 111 through the outlet 125. The rotating shaft 129 drives the distribution chamber 111 to rotate synchronously, thereby increasing the distribution area of ​​the treatment agent through centrifugal force during rotation, allowing the agent to combine with the wastewater more quickly. A heating plate inside the distribution chamber 111 heats the flowing treatment agent, which is then discharged through a pre-drilled hole at the bottom of the distribution chamber 111 and distributed into the wastewater, thus treating the wastewater. By heating the treatment agent, the thermal motion of molecules when the agent comes into contact with the wastewater effectively increases the combination rate between the treatment agent and the wastewater, which is beneficial to improving the wastewater treatment speed. Simultaneously, the stirring frame 119 fixed to the lower outer periphery of the rotating shaft 129 can agitate the wastewater inside the inner cylinder 110. Thorough mixing of wastewater and treatment agents allows the agents to take effect more quickly. During rapid relative motion between the stirring rod 118 inside the stirring frame 119 and the wastewater, the wastewater creates turbulence along the movement path of the stirring rod 118, according to the Bernoulli effect. The continuously rotating stirring frame 119 further breaks down this turbulence, increasing the disorder and uncertainty of the water flow inside the inner cylinder 110. This effectively improves the mixing effect of wastewater and treatment agents, which is beneficial for practical use. Furthermore, the inclined shape of the stirring rod 118 and the middle section of the stirring frame 119 creates a downward vortex inside the inner cylinder 110, effectively enhancing the aggregation and precipitation of heavy metals precipitated from the wastewater. In actual use, during the rotation of the rotating shaft 129, under the action of the limiting strip 113 inside the vertical tank 124, the threaded part 128 on the rotating shaft 129 can drive the sliding plate 127 to slide up and down inside the vertical tank 124. When the sliding plate 127 moves up and down inside the vertical tank 124, it will compress the water inside the vertical tank 124 to be discharged outward. When the water inside the vertical tank 124 is discharged outward through the through hole 123, it will form jets. When the sliding plate 127 moves downward, the downward jets will impact the lower part of the inner cylinder 110, preventing the settled metal impurities from solidifying inside the inner cylinder 110 and being difficult to clean. At the same time, it can backwash the filter screen 109 to prevent the filter screen 109 from clogging and affecting the entry of sewage. When the sliding plate 127 moves upward...The upward jet impacts the upper part of the inner cylinder 110, preventing some of the treatment agent from spilling onto the inner wall of the inner cylinder 110 without contacting the wastewater. It also prevents the wastewater from being agitated and splashing upwards, thus avoiding the accumulation of metallic impurities on the upper wall of the wastewater treatment tank 1, which would prevent backflow. This is beneficial for practical application in wastewater treatment. After being purified by the treatment agent, the wastewater enters the adsorption tank 115 through the inlet 122. The adsorption material inside the adsorption tank 115 further filters and adsorbs the purified wastewater. After passing through the adsorption tank 115, the wastewater is discharged through the outlet 116 into the lower tank 102. The heating pipe 114 inside the lower tank 102 heats, disinfects, and purifies the water, ensuring that the discharged water meets discharge standards, achieving full protection and recycling of water resources, and reducing environmental pollution.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A heavy metal wastewater treatment device, comprising a wastewater treatment tank (1), characterized in that: The wastewater treatment tank (1) includes an upper tank body (101). A drug inlet chamber (112) is fixedly connected to the middle of the top of the upper tank body (101). A servo motor (103) is installed on the top of the drug inlet chamber (112). A rotating shaft (129) is fixedly connected to the bottom drive end of the servo motor (103). A drug inlet pipe (104) is fixedly connected to the middle of one side of the drug inlet chamber (112). A through-hole (125) is provided at the bottom of the drug inlet chamber (112). The through-hole (125) passes through the middle of the top of the upper tank body (101). A limiting ring (126) is fixedly connected to the top of the upper tank body (101). A drug distribution chamber (111) is rotatably connected inside the limiting ring (126). A drug distribution chamber (111) is installed in the middle of the drug distribution chamber (111). A heating plate with a pre-reserved opening in the middle; a medicine distribution chamber (111) with evenly distributed pre-drilled holes at the bottom; the medicine distribution chamber (111) is fixedly connected to the upper outer periphery of the rotating shaft (129); a lower chamber (102) is provided at the bottom of the upper chamber (101); a base frame (107) is fixedly connected to the lower outer periphery of the lower chamber (102); a drain pipe (108) is provided inside the base frame (107); the drain pipe (108) is installed in the middle of the bottom end of the lower chamber (102); a valve body is installed at one end of the drain pipe (108); an adsorption cylinder (115) is installed in the upper part of the lower chamber (102); a water inlet (122) is provided in the upper part of the adsorption cylinder (115); and a water inlet (122) is provided in the lower part of the adsorption cylinder (115). A water outlet (116) is provided inside the lower barrel (102). The water inlet (122) is located in the lower part of the inner cylinder (110). Filter particles and adsorption particles are provided inside the adsorption cylinder (115). A base (117) is installed at the bottom of the lower barrel (102). Heating tubes (114) are evenly distributed on the top of the base (117). The heating tubes (114) surround the outside of the adsorption cylinder (115). Multiple stirring racks (119) are fixedly connected to the lower part of the outer periphery of the rotating shaft (129). Stirring rods (118) are fixedly connected to the inner side of each stirring rack (119). The stirring rods (118) and the middle section of the stirring racks (119) are inclined. The upper barrel... (101) An inner cylinder (110) is provided inside. A vertical barrel (124) is installed in the middle of the inner cylinder (110) through a fixing frame (121). A uniformly distributed limiting strip (113) is fixedly connected to the middle of the inner side wall of the vertical barrel (124). A threaded part (128) is provided in the middle of the rotating shaft (129). A sliding plate (127) is threadedly connected to the middle of the threaded part (128). The sliding plates (127) are all slidably connected to the inside of the vertical barrel (124) through the limiting strip (113). The threaded part (128) is located inside the vertical barrel (124). The upper and lower parts of the vertical barrel (124) are provided with uniformly distributed through holes (123). The lower part of the outer periphery of the inner cylinder (110) is provided with uniformly distributed openings (130).Each opening (130) is equipped with a filter screen (109). A water filtration chamber (120) is located on the outside of the inner cylinder (110). Multiple drain ports are located at the bottom of the water filtration chamber (120), and each drain port is equipped with a valve body.

2. The heavy metal wastewater treatment equipment according to claim 1, characterized in that: Water inlets (105) are installed on the upper part of both sides of the upper tank (101), and a control panel (106) is installed on the front side of the upper tank (101). The control panel (106) is electrically connected to the servo motor (103), the heating plate and the base (117).

3. A method for treating heavy metal wastewater, applied to the heavy metal wastewater treatment equipment described in claim 2, characterized in that: Includes the following steps: S1. Wastewater enters the filter chamber (120) inside the upper barrel (101) through the inlet (105) and enters the inner cylinder (110) through the opening (130) at the bottom of the inner cylinder (110). The filter screen (109) installed in the opening (130) can filter particulate impurities in the wastewater. The filtered wastewater will enter the inner cylinder (110). S2. When treating sewage, people can start the servo motor (103) through the control panel (106). The operation of the servo motor (103) can drive the rotating shaft (129) to rotate. When sewage enters, people can add treatment agents into the sewage treatment tank (1) through the inlet pipe (104). S3. The stirring frame (119) fixed on the lower part of the outer periphery of the rotating shaft (129) can realize the stirring of the sewage inside the inner cylinder (110) to achieve full mixing of sewage and treatment agent, so that the agent can take effect more quickly. The stirring rod (118) on the inner side of the stirring frame (119) can form turbulence at the moving trajectory of the stirring rod (118) during the rapid relative movement with the sewage according to the Bernoulli effect. At the same time, the continuously rotating stirring frame (119) can divide the turbulence formed in front, and mix the sewage and treatment agent. S4. During the rotation of the shaft (129), under the action of the limiting strip (113) inside the vertical barrel (124), the threaded part (128) on the shaft (129) can drive the sliding plate (127) to slide up and down inside the vertical barrel (124). When the sliding plate (127) moves up and down inside the vertical barrel (124), it will compress the water inside the vertical barrel (124) to be discharged outward. When the water inside the vertical barrel (124) is discharged outward through the through hole (123), it will form jets that impact the upper and lower parts of the inner cylinder (110) to avoid the situation where metal impurities remain on the inner wall of the sewage treatment tank (1) and cannot flow back. S5. After being treated and purified by the agent, the wastewater will enter the interior of the adsorption cylinder (115) through the water inlet (122) on the adsorption cylinder (115). The adsorption material inside the adsorption cylinder (115) can further filter and adsorb the purified wastewater. S6. After passing through the adsorption cylinder (115), the sewage will be discharged through the outlet (116) and enter the lower tank (102). The heating pipe (114) inside the lower tank (102) can heat, disinfect and purify the water, so that the discharged water can meet the discharge standards.

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