Multi-stage treatment equipment and method for treating tailing sewage

Abstract

The invention belongs to the technical field of tailing sewage treatment equipment, and particularly provides multi-stage treatment equipment and a multi-stage treatment method for tailing sewage treatment. The invention discloses multi-stage treatment equipment for treating tailing sewage. The multi-stage treatment equipment comprises a shell, a bottom bin, a sealing bin, a rotating shaft and a turntable, the invention relates to a multistage treatment method for treating tailing sewage. An electrochemical pH regulation and impurity directional precipitation stage; a stirring and diffusion strengthening stage; a precipitate separation and conveying stage; a heating disinfection and final discharge stage; and a real-time monitoring and self-adaptive adjusting stage. According to the method, the pain points of local acid-base imbalance and slow overall adjustment in traditional electrochemical treatment are solved, the pH balance efficiency is improved by 30% or above, and the reaction process is more environmentally friendly; and refractory organic matters such as xanthate and phenols are directly converted into harmless small molecules through anodic oxidation, so that compared with a traditional fractional step method, the treatment process is shortened, and the comprehensive purification efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tailing sewage treatment equipment, and particularly provides a multi-stage treatment equipment and method for tailing sewage treatment. BACKGROUND

[0002] Tailing sewage has complex components, including heavy metal ions, organic colloids, beneficiation reagents and other pollutants, and is difficult to treat. In the prior art, pH adjustment is mostly dependent on chemical reagent addition, which is easy to cause excessive pollution and uneven reaction. Electrochemical treatment has problems of low mass transfer efficiency and local acid-base imbalance. The treatment of heavy metals, colloids, organic matter and other pollutants is mostly carried out in steps, and the process is complicated and the equipment cost is high. The sediment is prone to clogging due to fine particles and high viscosity, and needs to be cleaned manually or relies on inefficient conveying mode, which affects continuous operation. The disinfection and dewatering equipment are separate, and the energy consumption is high and the land occupation is large. The pH adjustment relies on manual adjustment of current parameters, and the operation is complicated and the stability is poor. At the same time, the electrode is easy to form a passivation layer due to impurity adhesion, which leads to a decrease in efficiency and frequent shutdown for maintenance. These problems result in low efficiency and high cost of tailing sewage treatment, and it is difficult to meet the requirements of efficient purification and continuous operation. Therefore, we propose a multi-stage treatment equipment and method for tailing sewage treatment to solve the above-mentioned problems. SUMMARY

[0003] To solve the above technical problems, the technical solution adopted by the application is: a multi-stage treatment equipment for tailing sewage treatment, characterized by: including a shell, a bottom bin, a sealed bin, a rotating shaft and a rotating disc, the bottom bin is assembled below the shell, the sealed bin is arranged inside the bottom bin, a servo motor is assembled inside the sealed bin, and the output end of the servo motor extends to the outside of the sealed bin, the rotating shaft is axially assembled at the central position inside the shell, the lower end of the rotating shaft is connected with the output end of the servo motor, the rotating disc is arranged at the bottom of the shell, and the rotating disc is coaxially fixedly connected with the rotating shaft, and wire holders are installed on both sides of the bottom of the rotating disc.

[0004] The wire holders are connected with power supplies through bottom wire connection ports, the power supplies are arranged inside the sealed bin, electrode columns are slidably connected inside the wire holders, guide plates are uniformly distributed and installed on the top of the rotating disc, and electrode columns are slidably connected on both sides of the middle of the rotating disc.

[0005] Further, the electrode column bottom is fixedly connected with a fixed block, the bottom of the fixed block is installed with an electric push rod, the electric push rod is arranged inside the sealed bin, the electrode column top is installed with a mounting ring, the bottom of the mounting ring is rotationally connected with a rotating rod, the rotating rod is provided with a plurality of corrugated segments in the middle, the rotating rod is installed with a fixed ring on the upper and lower parts of the outer periphery, the fixed ring is fixedly connected with a fixed rod on both sides of the outer periphery, the fixed rod is fixedly connected with a side plate at the end, the side plate is installed with a magnetic stripe away from the fixed rod, the electrode column is provided with a rod body inside, the rod body is fixedly connected with an elastic piece on the upper and lower parts, and one end of the elastic piece away from the rod body is fixedly connected with the inner wall of the electrode column.

[0006] Further, the upper part of the shell is installed with a ring bin, a plurality of reflux pipes are installed on the upper part of the outer periphery of the ring bin on both sides, the reflux pipes penetrate the side wall of the shell, the bottom of the ring bin is provided with a drain pipe on both sides, the middle of the reflux pipe is provided with a heating seat, and side frames are installed on both sides of the heating seat.

[0007] Further, the rotating shaft is fixedly connected with a plurality of stirring blades on the upper part of the outer periphery, the stirring blades are arranged inside the ring bin, a plurality of pH sensors are installed inside the ring bin, and the pH sensors are electrically connected with the control panel.

[0008] Further, the ring bin is provided with a blowdown pipe on both sides, a feed auger is rotationally connected inside the blowdown pipe, the rotating shaft penetrates the middle of the horizontal frame, the horizontal frame is connected with a feed auger on both sides through a transmission assembly, the top of the feed auger penetrates the horizontal frame and is rotationally connected with the horizontal frame, and the transmission assembly is arranged inside the horizontal frame.

[0009] Further, a plurality of through holes are evenly arranged on the outer periphery of the blowdown pipe, openings are arranged on the upper and lower parts of the outer periphery of the blowdown pipe on both sides, guide plates two are arranged on the lower part of the blowdown pipe on both sides, guide plates one are arranged on the upper part of the blowdown pipe on both sides, and the guide plates one and the guide plates two are arranged in an inclined state.

[0010] Further, the rotating rod is fixedly connected with a gear on the lower part of the outer periphery, the gear is meshingly connected with a gear ring on the outer periphery, the gear ring is fixedly connected to the inside of the ring bin, and a plurality of through holes are arranged on the inside of the ring bin.

[0011] A multi-stage treatment method for tailing sewage treatment, a multi-stage treatment device for tailing sewage treatment is applied, and the multi-stage treatment method for tailing sewage treatment has the characteristics that the following operation steps are included:

[0012] S1, water pretreatment stage;

[0013] The tailings sewage is introduced into the shell through the water inlet of the shell, and the cavity structure of the treatment tank is used to realize the preliminary storage of the sewage, so as to create a closed and controllable reaction environment for subsequent electrochemical treatment.

[0014] S2, electrochemical pH adjustment and impurity directional precipitation stage;

[0015] The power supply device is connected through the wiring seat to supply power to the electrode column, so that H + or OH- is generated through the surface oxidation-reduction reaction to change the acid-base balance of the sewage;

[0016] Then, the pH adjustment and impurity precipitation are carried out in stages.

[0017] S3, stirring and diffusion reinforcement stage;

[0018] The servo motor is started to stir and increase the collision probability of impurity particles, and promote the aggregation and colloid coagulation of the precipitate;

[0019] S4, precipitate separation and transportation stage;

[0020] The precipitate settled at the bottom of the rotating disc is spun to the edge through centrifugal force and enters the ring bin;

[0021] The precipitate in the ring bin enters the drain pipe through the lower opening of the drain pipe and is discharged through the upper opening of the drain pipe;

[0022] S5, heating disinfection and final discharge stage;

[0023] The discharged precipitate flows back to the reflux pipe, and the heating seat heats the reflux pipe;

[0024] The heated precipitate is guided to the bottom bin through the reflux pipe, and finally discharged through the drain pipe to complete the sewage impurity removal;

[0025] S6, real-time monitoring and self-adaptive adjustment stage;

[0026] The pH sensor monitors the pH value of the sewage in real time;

[0027] The electrode is self-adaptively adjusted.

[0028] The side plate disturbs the sewage around the electrode column; when the side plate approaches / away from the electrode column, the rod body is polarized under the action of the elastic member, so that the electrode column vibrates at high frequency and small amplitude, accelerates the diffusion of H + / OH- and shakes off the impurities attached to the surface to avoid electrode passivation.

[0029] Further, in the electrochemical pH adjustment and impurity directional precipitation stage, the pH adjustment and impurity precipitation are carried out in stages.

[0030] Alkaline adjustment stage: OH- is generated by the cathode, and the wastewater is adjusted to be alkaline, at this time, heavy metal ions in the wastewater combine with OH- to form hydroxide precipitate; at the same time, OH- reacts with the surface groups of organic colloids to reduce the charge density of colloids and promote the coagulation of colloids;

[0031] Acid adjustment stage: H+ is generated by the anode, and the wastewater is adjusted to be acidic, at this time, H+ neutralizes the negative charge on the surface of organic colloids, and the zeta potential approaches 0, so that the colloids lose the repulsive force and coagulate and settle; at the same time, alkaline organic substances are protonated and dissolved under acidic conditions, and acidic organic substances are precipitated, and organic pollutants such as xanthate and phenols are oxidized by the anode into harmless small molecules. + , and the wastewater is adjusted to be acidic, at this time, H + + neutralizes the negative charge on the surface of organic colloids, and the zeta potential approaches 0, so that the colloids lose the repulsive force and coagulate and settle; at the same time, alkaline organic substances are protonated and dissolved under acidic conditions, and acidic organic substances are precipitated, and organic pollutants such as xanthate and phenols are oxidized by the anode into harmless small molecules.

[0032] Further, in the heating disinfection and final discharge stage, the heating seat heats the reflux pipe to achieve the following effects:

[0033] High temperature disinfects the precipitate and part of the wastewater, and inactivates microorganisms;

[0034] Destroys the stability of organic colloids, such as hydrogen bonds, and denatures and solidifies them, and combines them with other precipitates into dense solids, reducing viscosity.

[0035] The beneficial effects of using the present application are:

[0036] 1. In the prior art, the pH adjustment of tailing wastewater relies on the addition of acid and alkali reagents (such as sulfuric acid and sodium hydroxide), which can easily lead to overuse of reagents, secondary pollution, and H + / OH- distribution is uneven, and pH balance takes a long time, the present application generates H + / OH- in situ through electrode column redox reaction, avoiding the introduction of chemical reagents from the source; combined with the forced mixing of the stirring blade driven by the servo motor, H + / OH- around the electrode quickly spreads to the entire wastewater system, solving the pain points of "local acid-base imbalance and slow overall adjustment" in traditional electrochemical treatment, and improving the pH balance efficiency by more than 30%, and the reaction process is more environmentally friendly.

[0037] 2. In the prior art, the treatment of complex pollutants such as heavy metals, organic colloids, and mineral processing reagents in tailing wastewater is usually carried out in steps (such as first flocculation to remove heavy metals, and then oxidation to degrade organic matter), which is complicated and has high equipment cost, the present application creates an acidic / alkaline environment through the electrode column alternately, achieving "one-step" synergistic purification: under alkaline conditions, heavy metal ions quickly form hydroxide precipitate (solubility reduced by more than 50%), and organic colloids coagulate due to the decrease in charge density; under acidic conditions, SiO2 and other colloids coagulate due to the zeta potential approaching 0, and alkaline / acidic organic substances are precipitated respectively; further, xanthate, phenols and other refractory organic pollutants are directly converted into harmless small molecules through anodic oxidation, compared with the traditional step-by-step method, the treatment process is shortened, and the overall purification efficiency is greatly improved.

[0038] 3. In existing technologies, tailings wastewater sediments (such as heavy metal hydroxides and colloidal flocs) are often prone to accumulating at the bottom of the tank due to their fine particles and high viscosity. This requires manual cleaning or reliance on inefficient pumps, leading to frequent equipment downtime. This invention uses centrifugal force from a turntable and a guide plate to guide the sediments to the annular hopper efficiently. Combined with a conveying auger that continuously pushes the sediments upwards, the sediments are conveyed in a closed loop through a return pipe, ensuring no dead corners during the entire process. This solves the problem of "pipeline blockage and discontinuous conveying" that traditional equipment is prone to, and significantly extends the continuous operating time of the equipment.

[0039] 4. In existing technologies, the disinfection and dewatering of tailings wastewater sediments often require separate equipment (such as ultraviolet disinfection and plate and frame filter press), which increases energy consumption and floor space. This invention achieves triple benefits by simultaneously heating the return pipe with a heating seat: high temperature inactivates more than 99% of microorganisms, meeting disinfection requirements; it breaks the hydrogen bonds of organic colloids, causing them to denature and solidify, significantly increasing the density of the sediment; and it can quickly reduce the viscosity of particles caused by low temperatures in winter, avoiding blockage of the return pipe. Compared with the traditional separate "treatment + disinfection + anti-blockage" system, energy consumption is significantly reduced.

[0040] 5. In existing technologies, pH adjustment in electrochemical treatment often relies on manual adjustment of current density, which is prone to unstable treatment effects due to parameter fluctuations. Furthermore, frequent parameter adjustments increase the difficulty of operation. This invention monitors the pH of wastewater in real time through an acid-base sensor and adjusts the immersion height of the electrode column by linking an electric actuator. By changing the contact volume between the electrode and the wastewater, the pH can be dynamically adapted to the adjustment needs. Precise pH control can be achieved without changing the current parameters, solving the pain points of "parameter sensitivity and complex operation" in traditional electrochemical treatment. The degree of automation is greatly improved, making it suitable for operation by non-professionals.

[0041] 6. In the prior art, electrochemical electrodes are prone to forming a passivation layer due to the adhesion of precipitates (such as heavy metal hydroxides and colloids), which leads to a decrease in reaction efficiency and requires periodic shutdown for cleaning. The present invention drives the side plate to rotate through a turntable-linked gear-gear ring, continuously disturbing the sewage around the electrode column and reducing the residence time of impurities; the flow field generated by the rotation of the side plate can wash the electrode surface, which greatly reduces the amount of adhesion, extends the electrode replacement cycle, and thus reduces maintenance costs.

[0042] 7. In the prior art, H near the electrode + / OH- diffusion is slow, and fine impurities are easily attracted by the electrode to form stubborn adhesions. This invention utilizes the synergistic effect of the magnetic control and elasticity of the side plate and the rod to generate small-amplitude high-frequency vibrations in the electrode column, thereby accelerating H + / OH- diffuses into the wastewater system, improving mass transfer efficiency and shortening pH equilibrium time. On the other hand, vibration immediately shakes off surface-adhered impurities, preventing continuous adhesion. Compared with traditional static electrodes, the reaction efficiency retention rate is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 It is a front view of a three-dimensional structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0044] Figure 2 It is a shell internal structure plan view of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0045] Figure 3 It is a bottom bin internal structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0046] Figure 4 It is a ring bin internal structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0047] Figure 5 It is a gear part local structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0048] Figure 6 It is a sewage pipe part local structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0049] Figure 7 It is a material conveying auger part local structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0050] Figure 8 It is a wiring seat part local structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0051] Figure 9 It is a rod body part local structure diagram of a multi-stage processing equipment and method for tailing sewage treatment of the present application;

[0052] The reference signs include: 101, shell; 102, end cover; 103, water inlet; 104, backflow pipe; 105, heating seat; 106, side frame; 107, control panel; 108, drain pipe; 109, guide plate one; 110, ring bin; 111, through port; 112, stirring blade; 113, rotating shaft; 114, cross frame; 115, rotating disc; 116, bottom bin; 117, drain pipe; 118, material conveying auger; 119, through hole; 120, fixing block; 121, electric push rod; 122, sealing bin; 123, electrode column; 124, corrugated section; 125, side plate; 126, tooth ring; 127, fixing ring; 128, guide plate; 129, gear; 130, rotating rod; 131, fixing rod; 132, guide plate two; 133, terminal block; 134, servo motor; 135, rod body; 136, opening; 137, transmission assembly; 138, mounting ring; 139, elastic member. DETAILED DESCRIPTION

[0053] The application will be described in detail below with reference to the drawings.

[0054] Example one

[0055] Reference Figures 1-9 A multi-stage treatment equipment for tailing sewage treatment, comprising a shell 101, an end cover 102 is installed on the top of the shell 101, a water inlet 103 is arranged on one side of the top of the end cover 102, a bottom bin 116 is installed in the shell 101, a sealing bin 122 is arranged on the inner side of the bottom bin 116, a servo motor 134 is installed on the inner bottom of the sealing bin 122, a rotating shaft 113 is installed on the top driving end of the servo motor 134, a rotating disc 115 is installed on the outer circumferential middle part of the rotating shaft 113, a terminal block 133 is installed on both sides of the bottom of the rotating disc 115, a power supply is connected to the terminal block 133 through a bottom wiring port, the power supply is arranged on the inner side of the sealing bin 122, an electrode column 123 is slidably connected to the inner side of the electric light cylinder in the terminal block 133, guide plates 128 are evenly distributed on the top of the rotating disc 115, the electrode column 123 is slidably connected to both sides of the middle part of the rotating disc 115, a fixing block 120 is fixedly connected to the bottom of the electrode column 123, an electric push rod 121 is installed on the bottom of the fixing block 120, and the electric push rod 121 is arranged on the inner side of the sealing bin 122.

[0056] Further, in the specific implementation, the tailing sewage can be introduced into the shell 101 through the water inlet 103, the tailing sewage can be treated and purified through the treatment tank, the power supply device can be connected through the terminal block 133, the electrode column 123 can be powered to perform stable sewage purification and adjustment work, H +or OH-, so as to change the acid-base balance of sewage, realize the increase, decrease or stability of pH value, in the process, the rotation of the shaft 113 can be driven by the work of the servo motor 134, the stirring blade 112 on the shaft 113 can disturb the inside of the shell 101 and the sewage, so that the sewage can be more fully contacted with the electrode column 123, so that the H + or OH- generated around the electrode column 123 can quickly diffuse, force solution mixing, make H + and OH- can be uniformly contacted with the sewage in the shell 101 and complete the neutralization reaction, realize the rapid balance of pH value, complete the pH value treatment and adjustment work of the sewage.

[0057] The electrode column 123 is provided with an installation ring 138 at the top, the bottom of the installation ring 138 is rotatably connected with a rotating rod 130, the outer periphery of the rotating rod 130 is fixedly connected with a gear 129, the outer periphery of the gear 129 is rotatably connected with a tooth ring 126, the tooth ring 126 is fixedly connected to the inner side of the ring bin 110, the inner side of the ring bin 110 is provided with uniformly distributed through holes 111, the rotating rod 130 is provided with a plurality of corrugated segments 124, the outer periphery of the rotating rod 130 is provided with a fixed ring 127, the outer periphery of the fixed ring 127 is fixedly connected with a fixed rod 131, the fixed rod 131 is fixedly connected with a side plate 125, the side plate 125 is provided with a magnetic stripe, the inner side of the electrode column 123 is provided with a rod body 135, the upper and lower parts of the rod body 135 are fixedly connected with an elastic piece 139, the end of the elastic piece 139 away from the rod body 135 is fixedly connected with the inner wall of the electrode column 123;

[0058] Further, in specific implementation, the rotation of the rotating disc 115 will make the gear 129 continuously mesh with the tooth ring 126, so as to drive the gear 129 and the rotating rod 130 to rotate synchronously, the rotation of the rotating rod 130 will drive the fixed rod 131 and the side plate 125 to rotate, in the process, the rotation of the side plate 125 will disturb the sewage around the electrode column 123, further accelerate the production of H +And OH- diffusion, while being able to disturb sewage to avoid impurities staying on the electrode column 123 for too long, resulting in the generation of deposition and adhesion, which is beneficial to actual use, further, in the process of rotating the side plate 125, whenever the side plate 125 approaches the electrode column 123, the rod body 135 inside the side plate 125 will be attracted by the side plate 125, so that the rod body 135 will displace, then when the side plate 125 is away from the electrode column 123 in the rotating process, the rod body 135 is out of the magnetic field range of the side plate 125, at this time, under the action of the elastic member 139, the rod body 135 will reset, and under the action of the elastic force and inertia, the rod body 135 will quickly polarize and shake inside the electrode column 123, so that the electrode column 123 will vibrate with small amplitude and high frequency, thereby effectively accelerating the diffusion of H + And OH- diffusion, and can shake off the impurities attached to itself in the first time, which is beneficial to actual use.

[0059] Wherein, the outer circumference of the ring bin 110 is provided with a plurality of return pipes 104 on both sides of the upper part, the return pipes 104 penetrate through the side wall of the shell 101, the ends of the return pipes 104 are arranged inside the bottom bin 116, the bottom bin 116 is provided with a drain pipe 108 on both sides of the bottom, the middle part of the return pipe 104 is provided with a heating seat 105, the front and rear parts between the heating seats 105 on both sides are provided with a side frame 106, the end of the side frame 106 is provided with a control panel 107, and the control panel 107 is electrically connected with the heating seat 105, the servo motor 134 and the electric push rod 121.

[0060] Further, in specific implementation, the heating seat 105 can heat the return pipe 104, so as to heat and disinfect the precipitate and part of the sewage passing through the return pipe 104, and the high temperature can destroy the stability of the organic colloid in the impurities in the return pipe 104 [such as destroying the hydrogen bond or charge balance], so that it is denatured and coagulated, combined with other precipitates to form more dense solids, improving the impurity removal efficiency, and at the same time, when the tailings sewage temperature is low [such as winter], the fine particles in the impurities in the return pipe 104 may be bonded to the inner wall of the return pipe 104 or the material conveying auger 118 due to increased viscosity, the heating of the heating seat 105 can reduce the particle viscosity and reduce the risk of blockage, ensuring smooth discharge of the precipitate, which is beneficial to actual use.

[0061] Wherein, the outer circumference of the ring bin 110 is provided with a plurality of return pipes 104 on both sides of the upper part, the return pipes 104 penetrate through the side wall of the shell 101, the ends of the return pipes 104 are arranged inside the bottom bin 116, the bottom bin 116 is provided with a drain pipe 108 on both sides of the bottom, the middle part of the return pipe 104 is provided with a heating seat 105, the front and rear parts between the heating seats 105 on both sides are provided with a side frame 106, the end of the side frame 106 is provided with a control panel 107, and the control panel 107 is electrically connected with the heating seat 105, the servo motor 134 and the electric push rod 121.

[0062] Further, in specific implementation, the pH sensor installed in the middle of the shell 101 can realize real-time monitoring of the pH of the sewage in the shell 101, and the electric push rod 121 can be started according to the detected pH data through the control panel 107. The work of the electric push rod 121 drives the electrode columns 123 on both sides to rise and fall, so as to realize height adjustment of the cathode and anode in the electrode column 123 in the sewage, so as to realize corresponding adjustment and change of the volume of the electrode column 123 in the sewage according to the pH of the sewage in real time, so that the equipment can complete the rapid adjustment and treatment of the sewage without increasing and changing the current intensity and density, which is beneficial to the tailing sewage treatment work.

[0063] Wherein, the ring bin 110 is provided with sewage pipes 117 on both sides, the sewage pipes 117 are rotatably connected with the feed augers 118 on the inside, the rotating shaft 113 penetrates through the middle of the cross frame 114, the cross frame 114 is connected with the feed augers 118 on both sides through the transmission assemblies 137, the feed augers 118 are rotatably connected with the cross frame 114, and the transmission assemblies 137 are arranged on the inside of the cross frame 114.

[0064] Further, in specific implementation, the rotating shaft 113 drives the two sides of the feed auger 118 to rotate synchronously through the transmission assembly 137, and the feed auger 118 can guide the precipitate contacted upward, so that the precipitate is discharged through the opening 136 on the upper part of the sewage pipe 117. Under the guidance of the guide plate one 109, the precipitate is guided to the backflow pipe 104, and the precipitate is guided to flow back to the inside of the bottom bin 116 through the backflow pipe 104, and is discharged through the drain pipe 108, so as to complete the impurity removal work of the sewage.

[0065] Wherein, the sewage pipes 117 are provided with uniformly distributed through holes 119 on the outer periphery, the sewage pipes 117 are provided with openings 136 on the upper and lower parts of the outer periphery, the sewage pipes 117 are provided with guide plates two 132 on the lower parts of the outer periphery, the sewage pipes 117 are provided with guide plates one 109 on the upper parts of the outer periphery, the guide plates one 109 and the guide plates two 132 are arranged in an inclined state, a plurality of overflow pipes are installed on the upper part of the outer side wall of the ring bin 110, the overflow pipes are arranged below the guide plate one 109, and the overflow pipes are used to discharge the treated water in the ring bin 110.

[0066] Further, in the process of adjusting the pH of the wastewater, people can first generate OH- through the cathode in the electrode column 123 to adjust the wastewater to alkaline. At this time, the heavy metal ions in the wastewater combine with OH- to form hydroxide precipitate, and the solubility of the wastewater decreases with the increase of pH, which speeds up the precipitation speed of the heavy metal ions in the wastewater. When the electrode column 123 is powered on, the change of pH value will change the zeta potential of the organic colloids mixed in the wastewater. When the electrode column 123 is adjusted to alkaline, OH- generated by the cathode will react with the surface groups of the colloids [such as -COOH + OH- → -COO- + H2O], reducing the charge density and causing the colloids to coagulate. When the electrode column 123 is adjusted to acidic, H + will neutralize the negative charge on the surface of the colloids, making the zeta potential approach 0. At this time, the organic colloids mixed in the wastewater will coagulate due to the loss of repulsive force [such as SiO2 colloids in tailings are prone to coagulation at pH < 3]. At this time, the rotation of the rotating disc 115 can rotate the precipitate at the bottom to the edge through the guidance of the guide plate 128, so that the precipitate will enter the inside of the ring bin 110 through the through hole 111, thereby facilitating the subsequent removal of the impurities precipitated in the wastewater. By continuously creating acidic and alkaline conditions through the electrode column 123, the alkaline and acidic organic matter in the wastewater can be precipitated separately. At the same time, part of the xanthate [ROCSSNa] and phenolic organic matter mixed in the wastewater can be easily degraded and oxidized into harmless small molecules, thereby further achieving comprehensive treatment of the tailings wastewater. When the precipitate is introduced into the inside of the ring bin 110, it will be guided to the opening 136 at the lower part of the sewage pipe 117 under the guidance of the guide plate two 132 in the inside bottom of the ring bin 110, so that the precipitate will enter the inside of the sewage pipe 117 through the opening 136.

[0067] Example Two

[0068] A multi-stage treatment method for tailings wastewater treatment, which applies the multi-stage treatment device for tailings wastewater treatment in Example One, comprising the following operation steps:

[0069] S1, water pretreatment stage

[0070] The tailings wastewater is introduced into the inside of the shell through the water inlet 103 of the shell 101, and the cavity structure of the treatment tank is used to realize the preliminary storage of the wastewater, creating a closed and controllable reaction environment for subsequent electrochemical treatment.

[0071] S2, electrochemical pH adjustment and impurity directional precipitation stage

[0072] S2.1, connect the power supply device through the wiring seat 133 to supply power to the electrode column 123, so that H + [anode] or OH- [cathode] is generated through the surface oxidation-reduction reaction of the electrode column 123 to change the acid-base balance of the wastewater;

[0073] S2.2, pH adjustment in stages and impurity precipitation:

[0074] ①, alkaline adjustment stage: preferentially generate OH- through the cathode, adjust the sewage to alkaline, at this time, heavy metal ions in the sewage combine with OH- to generate hydroxide precipitate; at the same time, OH- reacts with the surface groups of organic colloids [such as -COOH], reducing the charge density of the colloids and promoting the coagulation of the colloids;

[0075] ②, acidic adjustment stage: generate H + by the anode, adjust the sewage to acidic [reduce the pH], at this time, H + neutralizes the negative charge on the surface of organic colloids [such as SiO2 colloids], making the zeta potential approach 0, and the colloids coagulate due to the loss of repulsive force; at the same time, basic organic matter such as amine-based flotation reagents is protonated and dissolved under acidic conditions, and acidic organic matter [such as fatty acids] is precipitated, and organic pollutants such as xanthate and phenolic compounds are oxidized by the anode into harmless small molecules [such as CO2, SO42-];

[0076] S3, stirring and diffusion enhancement stage

[0077] Start the servo motor 134 to drive the rotating shaft 113 and the stirring blade 112 to rotate, disturbing the sewage inside the shell 101. The stirring action makes the sewage fully contact with the electrode column 123, rapidly diffuses the H + / OH- generated around the electrode, forces the solution to mix, and ensures that H + and OH- are uniformly neutralized in the shell 101, achieving rapid pH balance; at the same time, stirring enhances the collision probability of impurity particles, promoting the aggregation of precipitates and the coagulation of colloids;

[0078] S4, precipitate separation and transport stage

[0079] S4.1, generate centrifugal force by rotating the rotating disc 115, and guide the precipitate that has settled to the bottom of the shell 101 to the edge through the guide plate 128, and then into the annular bin 110 through the through hole 111;

[0080] S4.2, the precipitate in the annular bin 110 is guided by the bottom guide plate 132 and enters the sewage pipe 117 through the lower opening 136 of the sewage pipe 117; the rotating shaft 113 drives the feed screw 118 to rotate synchronously through the transmission assembly 137, pushing the precipitate upwards and discharging it through the upper opening 136 of the sewage pipe 117;

[0081] S5, heating and disinfection and final discharge stage

[0082] S5.1, the discharged precipitate is guided to the return pipe 104 through the guide plate 109, and the heating seat 105 heats the return pipe, realizing double effects: ① high temperature [60-100℃] disinfects the precipitate and part of the sewage, and inactivates microorganisms; ② destroy the stability of organic colloids such as destroy hydrogen bonds], so that it is denatured and coagulated, combined with other precipitates into dense solids, and the viscosity is reduced;

[0083] S5.2, the heated precipitate is guided to the bottom bin 116 through the return pipe 104, and finally discharged through the drain pipe 108, completing the sewage impurity removal.

[0084] S6, real-time monitoring and self-adaptive adjustment stage

[0085] S6.1, the pH sensor in the middle of the shell 101 monitors the pH value of the sewage in real time, and the data is transmitted to the control panel 107;

[0086] S6.2, electrode self-adaptive adjustment: the control panel 107 starts the electric push rod 121 according to the pH data, drives the electrode column 123 to rise and fall, changes the immersion volume of the electrode column 123 in the sewage, and can adapt to different pH adjustment requirements without adjusting the current density;

[0087] S6.3, when the rotating disc 115 rotates, the gear 129 meshes with the gear ring 126 to drive the rotating rod 130 and the side plate 125 to rotate, and the sewage around the electrode column 123 is disturbed; when the side plate approaches / away from the electrode column 123, the rod body 135 is polarized under the action of the elastic member 139, so that the electrode column 123 vibrates at high frequency and small amplitude, which accelerates the diffusion of H + / OH- and shakes off the impurities attached to the surface, avoiding electrode passivation.

[0088] Working principle:

[0089] In actual use, people can guide the tailing sewage into the shell 101 through the water inlet 103, purify the tailing sewage through the treatment tank, connect the power supply device through the wiring seat 133, and supply power to the electrode column 123 to make it work stably. The electrode column 123 can adjust the sewage, the electrode column 123 can generate H + or OH- through the surface oxidation-reduction reaction or indirect reaction, so as to change the acid-base balance of the sewage, realize the increase, decrease or stability of the pH value, in the process, the work of the servo motor 134 can drive the rotating shaft 113 to rotate, the stirring blade 112 on the rotating shaft 113 can disturb the inside of the shell 101 and the sewage, so that the sewage can contact with the electrode column 123 more fully, so as to diffuse the H + or OH- generated around the electrode column 123 quickly, and forcibly mix the solution, so that H +And OH- can be in uniform contact with sewage in the shell 101 and complete the neutralization reaction, realize the rapid balance of pH value, complete the sewage pH value treatment and adjustment work, in the process of adjusting the pH value of sewage, people can first generate OH- through the cathode in the electrode column 123, adjust the sewage to alkaline, at this time the heavy metal ions in the sewage combine with OH- to generate hydroxide precipitate, and the solubility of sewage decreases with the increase of pH, speed up the precipitation speed of heavy metal ions in sewage, and when the electrode column 123 is electrified, the change of pH value will change the zeta potential of the organic colloid mixed in the sewage, when the electrode column 123 is adjusted to alkaline, OH- generated by the cathode will react with the surface group of colloid [such as-COOH+OH-→-COO-+H2O], reduce the charge density, cause the colloid to coagulate, when the electrode column 123 is adjusted to acid, H +The meeting and colloidal surface negative charge, the zeta potential tends to 0, at this time the sewage mixed with organic colloids lose repulsion and coagulation [such as tailings of SiO2 colloidal in pH <3 easy coagulation], at this time through the rotation of the rotating disc 115 can be through the centrifugal force and guide plate 128 guide to the bottom of the precipitate spin to the edge, so that the precipitate will be through the mouth 111 into the ring warehouse 110 inside, so that the subsequent can be convenient to the sewage in the impurity of the export, through the electrode column 123 continuous creation of acidic and alkaline conditions, so as to realize the sewage in the alkaline organic matter and acid organic matter of the separate precipitation;Meanwhile, part of the doped xanthate [ROCSSNa] and phenolic organic matter and other substances in the sewage can be easily degraded and oxidized into harmless small molecules, thereby further realizing comprehensive treatment of the tailing sewage. When the precipitate is introduced into the ring bin 110, it will be guided to the opening 136 at the lower part of the blowdown pipe 117 under the guidance of the guide plate two 132 at the bottom of the ring bin 110, so that the precipitate separated out will enter the inside of the blowdown pipe 117 through the opening 136. In the working process, the transmission assembly 137 will drive the two side conveying augers 118 to rotate synchronously through the rotating shaft 113. The conveying auger 118 can guide the contacted precipitate upwards, so that the precipitate will be discharged through the opening 136 at the upper part of the blowdown pipe 117. Under the guidance of the guide plate one 109, the precipitate will be guided to the backflow pipe 104. The separated-out precipitate will be guided to flow back to the inside of the bottom bin 116 through the backflow pipe 104 and discharged through the drain pipe 108, completing the impurity removal work of the sewage. In this process, the heating seat 105 can heat the backflow pipe 104, thereby heating and disinfecting the precipitate and part of the sewage passing through the backflow pipe 104. At the same time, the high temperature can destroy the stability [such as destroying the hydrogen bond or charge balance] of the organic colloid in the impurities in the backflow pipe 104, so that the organic colloid is denatured and solidified to combine with other precipitates to form more dense solids, thereby improving the impurity removal efficiency. At the same time, when the temperature of the tailing sewage is low [such as in winter], the fine particles in the impurities in the backflow pipe 104 may be bonded to the inner wall of the backflow pipe 104 or the conveying auger 118 and other components due to increased viscosity. The heating of the heating seat 105 can reduce the particle viscosity and reduce the risk of blockage, ensuring smooth discharge of the precipitate, which is beneficial to actual use. In actual use, the acid-base sensor installed in the middle of the shell 101 can realize real-time monitoring of the acid-base value of the sewage in the shell 101. The control panel 107 can start the electric push rod 121 according to the detected acid-base value data. The electric push rod 121 will drive the two side electrode columns 123 to rise and fall, thereby realizing height adjustment of the cathode and anode in the electrode column 123 in the sewage, so that the volume of the electrode column 123 in the sewage can be adjusted and changed in real time according to the acid-base value of the sewage, so that the equipment can complete the rapid adjustment and treatment of the sewage without increasing or changing the current intensity and density, which is beneficial to the tailing sewage treatment work. In the actual treatment process, the gear 129 will continuously mesh with the gear ring 126 as the rotating disc 115 rotates, thereby driving the gear 129 and the rotating rod 130 to rotate synchronously. The rotation of the rotating rod 130 will drive the fixed rod 131 and the side plate 125 to rotate. In this process, the rotation of the side plate 125 will disturb the sewage around the electrode column 123, further accelerating the production of H on the electrode column 123; +The diffusion of H+and OH- can disturb the sewage, so that the impurities cannot stay on the electrode column 123 for too long, so as to avoid deposition and adhesion, and is beneficial to actual use. Further, in the rotating process of the side plate 125, whenever the side plate 125 approaches the electrode column 123, the rod body 135 inside the side plate 125 is attracted by the side plate 125, so that the rod body 135 is displaced. Then, when the side plate 125 is away from the electrode column 123 in the rotating process, the rod body 135 is out of the magnetic field range of the side plate 125. At this time, under the action of the elastic member 139, the rod body 135 is reset. Under the action of the elasticity and inertia, the rod body 135 is rapidly polarized and shaken inside the electrode column 123, so that the electrode column 123 is vibrated at a small amplitude and a high frequency, so that the diffusion of H+and OH- can be effectively accelerated, and the impurities attached to the electrode column 123 can be shaken off in the first time, which is beneficial to actual use. + The diffusion of H+and OH- can disturb the sewage, so that the impurities cannot stay on the electrode column 123 for too long, so as to avoid deposition and adhesion, and is beneficial to actual use. Further, in the rotating process of the side plate 125, whenever the side plate 125 approaches the electrode column 123, the rod body 135 inside the side plate 125 is attracted by the side plate 125, so that the rod body 135 is displaced. Then, when the side plate 125 is away from the electrode column 123 in the rotating process, the rod body 135 is out of the magnetic field range of the side plate 125. At this time, under the action of the elastic member 139, the rod body 135 is reset. Under the action of the elasticity and inertia, the rod body 135 is rapidly polarized and shaken inside the electrode column 123, so that the electrode column 123 is vibrated at a small amplitude and a high frequency, so that the diffusion of H+and OH- can be effectively accelerated, and the impurities attached to the electrode column 123 can be shaken off in the first time, which is beneficial to actual use.

[0090] The above is only the preferred embodiment of the present application. Those skilled in the art can make many changes in the specific implementation and application range according to the idea of the present application, as long as the changes do not deviate from the concept of the present application, and all fall within the protection scope of the present application.

Claims

1. A multi-stage treatment device for tailings wastewater treatment, characterized in that: The utility model provides a tailing wastewater treatment device, including shell, bottom warehouse, sealed warehouse, pivot and carousel, bottom warehouse assembly in the lower of shell, sealed warehouse sets up in the inside of bottom warehouse, servo motor assembly in sealed warehouse inside, and servo motor's output end extends to sealed warehouse outside, pivot axial assembly in the central position of shell inwards, pivot's lower extreme is connected with servo motor output end, carousel sets up in the bottom of shell, and carousel is coaxial fixed connection with pivot, and the both sides of carousel bottom are equipped with terminal block, The terminal block is connected with a power supply through the bottom terminal port, the power supply is arranged inside the sealed warehouse, the inside of the terminal block is slidably connected with an electrode column, the top of the carousel is equipped with evenly distributed guide plates, and the both sides of the middle part of the carousel are slidably connected with electrode columns.

2. The multi-stage treatment device and method for tailing sewage treatment according to claim 1, characterized in that: The bottom of the electrode column is fixedly connected with a fixed block, the bottom of the fixed block is equipped with an electric push rod, the electric push rod is arranged inside the sealed warehouse, the top of the electrode column is equipped with a mounting ring, the bottom of the mounting ring is rotatably connected with a rotating rod, the middle part of the rotating rod is provided with a plurality of corrugated segments, the upper and lower parts of the outer periphery of the rotating rod are equipped with fixed rings, the both sides of the outer periphery of the fixed ring are fixedly connected with fixed rods, the distal ends of the fixed rods are fixedly connected with side plates, the ends away from the fixed rods of the side plates are equipped with magnetic strips, the inside of the electrode column is provided with a rod body, the upper and lower parts of the rod body are fixedly connected with elastic members, and the ends away from the rod body of the elastic members are fixedly connected with the inner wall of the electrode column.

3. The multi-stage treatment device for tailing sewage treatment according to claim 1, characterized in that: The upper part of the shell is equipped with a ring warehouse, a plurality of backflow pipes are arranged on the upper part of the outer periphery of the ring warehouse, the backflow pipes penetrate the side wall of the shell, the distal ends of the backflow pipes are arranged inside the bottom warehouse, the both sides of the bottom of the bottom warehouse are provided with drain pipes, the middle parts of the backflow pipes are provided with heating seats, and the front and rear parts between the heating seats are equipped with side frames.

4. The multi-stage treatment device for tailing sewage treatment according to claim 3, characterized in that: The outer periphery of the pivot is fixedly connected with a plurality of stirring blades, the stirring blades are arranged inside the ring warehouse, a plurality of pH sensors are arranged inside the ring warehouse, and the pH sensors are electrically connected with the control panel.

5. The multi-stage treatment device for tailing sewage treatment according to claim 3, characterized in that: The both sides of the inside of the ring warehouse are provided with sewage discharge pipes, the inside of the sewage discharge pipe is rotatably connected with a feed auger, the top of the pivot penetrates the middle part of the cross frame, the both sides of the upper part of the cross frame are connected with the feed auger through a transmission assembly, the top of the feed auger penetrates the cross frame and is rotatably connected with the cross frame, and the transmission assembly is arranged inside the cross frame.

6. The multi-stage treatment device for tailing sewage treatment according to claim 5, characterized in that: The outer periphery of the sewage discharge pipe is provided with uniformly distributed through holes, the upper and lower parts of the both sides of the outer periphery of the sewage discharge pipe are provided with openings, the both sides of the lower part of the sewage discharge pipe are provided with guide plates two, the both sides of the upper part of the sewage discharge pipe are provided with guide plates one, and the guide plates one and the guide plates two are arranged in an inclined state.

7. The multi-stage treatment device for tailing sewage treatment according to claim 2, characterized in that: The lower part of the outer periphery of the rotating rod is fixedly connected with a gear, the outer periphery of the gear is meshingly connected with a gear ring, the gear ring is fixedly connected to the lower part of the inside of the ring warehouse, and the inside of the ring warehouse is provided with uniformly distributed through holes.

8. A multi-stage treatment method for tailing sewage treatment, wherein the multi-stage treatment device for tailing sewage treatment according to any one of claims 1-7 is applied. The utility model provides a tailing wastewater treatment device, including the following operation steps: S1, water pretreatment stage; The tailing wastewater is introduced into the inside of the shell through the water inlet of the shell, the cavity structure of the treatment tank is used to realize the preliminary temporary storage of the wastewater, and a closed and controllable reaction environment is created for subsequent electrochemical treatment; S2, electrochemical pH adjustment and impurity directional precipitation stage; The power supply device is connected through the connecting seat to supply power for the electrode column, so that H + or OH- is generated through the surface oxidation-reduction reaction to change the acid-base balance of the sewage; Subsequently, the pH adjustment and impurity precipitation stage; S3, stirring and diffusion enhancement stage; Start the servo motor to stir and enhance the collision probability of impurity particles, promote the aggregation of precipitates and colloidal coagulation; S4, precipitate separation and transport stage; Through centrifugal force, the precipitate settled at the bottom of the rotating disc is spun to the edge and enters the ring bin; The precipitate in the ring bin enters the drain pipe through the lower opening of the drain pipe and is discharged through the upper opening of the drain pipe; S5, heating disinfection and final discharge stage; The discharged precipitate flows back to the backflow pipe, and the heating seat heats the backflow pipe; The heated precipitate is guided to the bottom bin through the backflow pipe, and finally discharged through the drain pipe, completing the impurity removal of wastewater; S6, real-time monitoring and self-adaptive adjustment stage; The pH sensor monitors the pH value of the wastewater in real time; Self-adaptive adjustment of electrode; Side plate disturbance electrode column around sewage; side plate close / far from electrode column, stick body under the action of elastic member polarization, make electrode column high frequency small amplitude vibration, accelerate H + / OH-diffusion and shake off the impurities attached to the surface, to avoid electrode passivation.

9. The multi-stage treatment method for tailing sewage treatment according to claim 8, characterized in that: In the electrochemical pH adjustment and impurity directional precipitation stage, the pH adjustment and impurity precipitation stage is divided into two stages: Alkaline adjustment stage: preferentially generate OH- through the cathode to adjust the wastewater to alkaline, at this time, heavy metal ions in the wastewater combine with OH- to generate hydroxide precipitate; At the same time, OH- reacts with the surface groups of organic colloids to reduce the charge density of colloids and promote colloidal coagulation; Acid adjustment stage: H is generated by anode + The sewage is adjusted to be acidic, at this time, H + The negative charge on the surface of the organic colloid is neutralized to make the zeta potential approach 0, and the colloid is aggregated and precipitated due to the loss of repulsion; at the same time, the basic organic matter is protonated and dissolved under acidic conditions, and the acidic organic matter is precipitated, and the organic pollutants such as xanthate and phenol are oxidized into harmless small molecules by the anode.

10. The multi-stage treatment method for tailing sewage treatment according to claim 8, characterized in that: In the heating disinfection and final discharge stage, the heating seat heats the backflow pipe, realizing double effects: High temperature disinfects the precipitate and part of the wastewater, inactivates microorganisms; Destroy the stability of organic colloids, such as destroy the hydrogen bond, so that it denatures and coagulates, combines with other precipitates into dense solids, and reduces viscosity.

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