Chemical wastewater treatment device and method

Abstract

The present invention relates to the technical field of sewage treatment, and specifically discloses a chemical sewage treatment device, comprising a tank body, a main stirring shaft rotatably arranged in the tank body, a sewage pipe connected to the top of the tank body, a treatment agent pipe, and a liquid outlet pipe connected to the bottom of the tank body; and further comprising a swing arm, a secondary stirring shaft, and a stirring cover arranged in sequence along the axial direction of the main stirring shaft; the swing arm is hinged with the main stirring shaft and is provided with a first stirring blade, the secondary stirring shaft is distributed along the radial direction of the main stirring shaft and is rotatably connected to the main stirring shaft at one end, the secondary stirring shaft is provided with a second stirring blade, and the stirring cover is in a cone shape with a small top and a large bottom, and a plurality of lower stirring blades are convexly provided on its outer wall. The present invention can efficiently realize chemical sewage treatment, has a simple structure, and is suitable for promotion.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a chemical sewage treatment device and a chemical sewage treatment method. Background Art

[0002] Human beings have a very close relationship with chemical industry, which is popularized in all aspects of life. In modern life, chemical products are indispensable almost anytime and anywhere, from material life such as clothing, food, housing, transportation to spiritual life such as culture, art, and entertainment. Chemical production wastewater refers to process wastewater, cooling water, waste washing water, equipment and site flushing water discharged in chemical production. If these wastewaters are discharged without treatment, they will cause pollution of different properties and degrees of water bodies, thereby endangering human health and affecting industrial and agricultural production.

[0003] Most of the existing chemical wastewater treatment devices simply use a stirring rod to stir and mix the wastewater and the reagent when treating chemical wastewater. The mixing effect of the reagent and the chemical wastewater is poor, and the treatment speed of the chemical wastewater is not high. In particular, the existing chemical wastewater treatment devices often manually add the treatment reagent to the chemical wastewater at one time. The existing chemical wastewater treatment devices can no longer meet the needs of fast and efficient contact reaction between the treatment reagent and the chemical wastewater by relying solely on a simple stirring rod. Summary of the invention

[0004] In view of this, the present invention provides a chemical wastewater treatment device to improve the chemical wastewater treatment efficiency.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the present invention provides a chemical wastewater treatment device, including a tank body, a main stirring shaft rotatably arranged in the tank body, a sewage pipe connected to the top of the tank body, a treatment agent pipe and a liquid outlet pipe connected to the bottom of the tank body; it also includes a swing arm, an auxiliary stirring shaft and a stirring cover arranged in sequence along the axial direction of the main stirring shaft; the swing arm is hinged to the main stirring shaft and is provided with a first stirring blade, the auxiliary stirring shaft is distributed along the radial direction of the main stirring shaft and one end is rotatably connected to the main stirring shaft, the auxiliary stirring shaft is provided with a second stirring blade, and the stirring cover is a cone with a small upper part and a large lower part and a plurality of lower stirring blades are protruding from its outer wall.

[0006] In a possible design, a number of drainage holes are evenly distributed on the outer edge of the stirring cover, the main stirring shaft is hollow, and its bottom is open and slidably connected with a piston, the inner cavity of the main stirring shaft and the cross-section of the piston are both elliptical, and a groove wheel is coaxially fixed to the lower end of the piston, and the side wall of the groove wheel is provided with a clamping groove distributed up and down along its axis and closed, a lower sleeve and a fixing rod are provided at the bottom of the tank body, a guide rod connected with the lower sleeve is fixed to the bottom of the groove wheel, and a pin that slides in the clamping groove is provided at the upper end of the fixing rod, a liquid inlet hole is provided at the upper part of the main stirring shaft, and a first one-way valve for liquid in the tank body to flow into the inner cavity of the main stirring shaft is provided at the liquid inlet hole, a liquid outlet hole is provided at the lower part of the main stirring shaft, and a second one-way valve for liquid in the inner cavity of the main stirring shaft to flow into the tank body is provided at the liquid outlet hole, and the connection between the upper end of the stirring shaft and the main stirring shaft is located above the liquid outlet hole.

[0007] In a possible design, a gear ring is fixed on the inner wall of the middle part of the tank body, the gear ring tooth opening of the gear ring faces downward, and a driven gear meshing with the gear ring is fixed on the other end of the auxiliary stirring shaft.

[0008] In a possible design, it also includes an elastic membrane sealed and fixed on the inner wall of the upper part of the tank body and a first magnet block fixed on one of the swing arms. The elastic membrane and the inner wall of the tank body form an air storage cavity. A second magnet block that repels the first magnet block is fixed on the elastic membrane. The elastic membrane is also provided with an air outlet, and the air outlet is provided with a third one-way valve for allowing gas to enter the tank body from the air storage cavity. The inner wall of the tank body covered by the elastic membrane is also provided with an air inlet, and the air inlet is provided with a fourth one-way valve for allowing gas to enter the air storage cavity from the outside.

[0009] In a possible design, the first magnet block is adhesively fixed to the swing arm, and the second magnet block is adhesively fixed to the elastic membrane.

[0010] In a possible design, the lower stirring blade is in a cone shape that is smaller at the top and larger at the bottom.

[0011] In a possible design, two swing arms are provided and three auxiliary stirring shafts are provided.

[0012] In a possible design, the upper end of the main stirring shaft extends out of the tank body and is fixed with a pulley.

[0013] In a possible design, the upper end of the main stirring shaft is rotatably connected to the tank body via a thrust bearing.

[0014] The present invention also provides a method for treating chemical wastewater, which is based on the chemical wastewater treatment device as described above and comprises the following steps:

[0015] Step 1, passing the filtered chemical wastewater into the tank through the sewage pipe, assuming that the volume of the tank is V, then the amount of chemical wastewater introduced is 0.6V;

[0016] Step 2, start the stirring motor to drive the main stirring shaft to rotate, and gradually add the treatment agent matched with the chemical wastewater ratio into the tank through the treatment agent pipe; during the process, the speed of the main stirring shaft gradually increases from 45r / min to 100r / min, and then gradually decreases to 45r / min, and repeats this cycle, and each cycle lasts for 0.5h;

[0017] Step 3: After the reaction lasts for 3-4 hours, turn off the stirring motor and open the liquid outlet pipe to discharge the treated chemical wastewater.

[0018] Compared with the prior art, the principles and effects of the present invention are as follows:

[0019] (1) The swing arm and the connecting piece are hinged by a hinge, so that the swing arm can not only rotate around the axis of the tank body driven by the main stirring shaft, but also swing up and down when the speed of the main stirring shaft changes, adding a new stirring dimension, which can increase the stirring range of the swing arm and generate turbulence, thereby enhancing the contact probability between the chemical wastewater and the treatment agent and improving the reaction efficiency and effect; and the setting of the first stirring blade can also further increase the range of action of the swing arm and improve the reaction efficiency and effect of the chemical wastewater and the treatment agent.

[0020] (2) When the secondary stirring shaft rotates with the main stirring shaft, the driven gear rotates around the gear ring accordingly. At the same time, the driven gear also rotates around its own axis, thereby driving the secondary stirring shaft to rotate around its own axis, thereby adding a new stirring dimension. This can increase the stirring range of the secondary stirring shaft, generate turbulence, enhance the contact probability between the chemical wastewater and the treatment agent, and improve the reaction efficiency and effect. The secondary stirring shaft is provided with a second stirring blade. The setting of the second stirring blade can also further increase the range of action of the swing arm. At the same time, the second stirring blade can rotate around the main stirring shaft and the axis of the secondary stirring shaft at the same time, thereby adding a new stirring dimension, achieving efficient mixing without dead angles in the middle area of ​​the entire tank body, and improving the reaction efficiency and effect of the chemical wastewater and the treatment agent.

[0021] (3) When the first magnet block approaches the second magnet block, due to the magnetic repulsion between the first magnet block and the second magnet block, the repulsive force between the two further squeezes the elastic membrane, so that the volume of the air storage cavity is reduced, and the air in the air storage cavity enters the tank body through the third one-way valve, which can not only fully realize the mixing reaction of air and chemical wastewater, but also play an aeration role, generating turbulence in the chemical wastewater and the treatment agent, further increasing the contact probability and area of ​​the chemical wastewater and the treatment agent. In addition, it cooperates with the swing arm to achieve front and back clamping of the chemical wastewater and the treatment agent, and once again adds a new stirring dimension, realizing multi-faceted and multi-dimensional mixed contact between the chemical wastewater and the treatment agent in the tank body. When the first magnet block moves away from the second magnet block, the elastic membrane recovers under the action of its own elastic force, the volume of the air storage cavity increases, and air enters the air storage cavity from the outside through the fourth one-way valve for replenishment, and this cycle repeats.

[0022] (4) First, the stirring hood is provided with a lower stirring blade, which can stir and mix the bottom of the tank body in a large range as the main stirring shaft rotates. At the same time, the special shape of the lower stirring blade cooperates with the stirring hood, which can make the chemical sewage and treatment agent mixture at the bottom of the tank body surge upward, realizing a large positive circulation up and down the tank body. At the same time, the length of the stirring hood and the lower stirring blade along the axial direction of the tank body is increased, which greatly increases the stirring and mixing depth, stirring and mixing effect and efficiency of the lower stirring blade. Secondly, when the piston slides downward, the inner cavity volume of the main stirring shaft increases to generate suction, and the chemical sewage and treatment agent mixture at the top of the tank body enters from the liquid inlet hole. The inner cavity of the main stirring shaft, when the piston slides upward, the inner cavity volume of the main stirring shaft decreases, and the chemical sewage and treatment agent mixture in the inner cavity of the main stirring shaft is discharged into the bottom space of the tank body below the stirring cover, adding a circulation route from the upper part of the tank body directly to the bottom of the tank body. The upper part of the tank body is just the input source of chemical sewage and treatment agent, and the setting of the stirring cover and the drainage hole on it can cooperate with the lower stirring blade to quickly surge the bottom space of the tank body below the stirring cover upward, which adds a new stirring dimension again, realizes efficient, rapid and uniform mixing of the upper and lower areas of the entire tank body, and improves the reaction efficiency and effect of chemical sewage and treatment agent.

[0023] (5) It is particularly important to note that the main stirring shaft, swing arm, auxiliary stirring shaft, stirring cover and elastic membrane are not isolated, but are interconnected and work together. The main stirring shaft is the power source of the entire device, while the swing arm, auxiliary stirring shaft and stirring cover stir and mix at the upper, middle and lower parts of the tank body respectively. At the same time, they also play a relay role in the efficient circulation of chemical wastewater and treatment agents in the tank body. In conjunction with the inflation of the elastic membrane and the additional circulation route added to the inner cavity of the main stirring shaft, this multi-pronged approach, which is linked together, not only fully realizes the contact, mixing and reaction effect of chemical wastewater and treatment agents, but also greatly improves the treatment efficiency of the entire device for chemical wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A three-dimensional diagram of a chemical wastewater treatment device proposed in an embodiment of the present application is shown;

[0026] Figure 2 A schematic diagram of the internal structure of a chemical wastewater treatment device proposed in an embodiment of the present application is shown;

[0027] Figure 3 A schematic diagram of the internal structure of a chemical wastewater treatment device proposed in an embodiment of the present application is shown;

[0028] Figure 4 A rear view of a chemical wastewater treatment device proposed in an embodiment of the present application is shown;

[0029] Figure 5 Shows Figure 2 Front view

[0030] Figure 6 Shows Figure 5 AA section view;

[0031] Figure 7 Shows Figure 5 CC section view;

[0032] Figure 8 Shows Figure 5 DD section view;

[0033] Fig. 9 Shows Figure 5 EE section view. DETAILED DESCRIPTION

[0034] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0035] Description of reference numerals:

[0036] Tank body 10, support leg 11, liquid outlet pipe 12, sewage pipe 13, treatment agent pipe 14, pulley 15, main stirring shaft 16, thrust bearing 17, liquid outlet 18, liquid inlet hole 20, swing arm 21, connecting piece 22, first stirring blade 23, first magnet block 24, elastic membrane 30, air inlet hole 31, air outlet hole 32, second magnet block 33, ring gear 40, ring gear tooth portion 41, driven gear 42, auxiliary stirring shaft 43, second stirring blade 44, groove wheel 50, fixing rod 51, pin 52, stirring cover 53, lower stirring blade 54, drainage hole 55, liquid outlet hole 56, piston 57, lower shaft sleeve 58, and slot 59.

[0037] like Figure 1-9 As shown, the embodiment of the present invention discloses a chemical wastewater treatment device, including a tank body 10, a main stirring shaft 16, a sewage pipe 13 connected to the top of the tank body 10, a treatment agent pipe 14 and a liquid outlet pipe 12 connected to the bottom of the tank body 10, and three legs 11 are provided at the bottom of the tank body; Fig. 9 As shown, a liquid outlet 18 is provided at the bottom of the tank body 10, and the liquid outlet pipe 12 is connected to the liquid outlet. The tank body 10 is made of glass fiber reinforced plastic, which is corrosion-resistant and has high strength. The sewage pipe 13 facilitates the chemical sewage to enter the tank body 10 for reaction treatment, and the treatment agent pipe 14 facilitates the treatment agent to enter the tank body 10 for reaction. The liquid outlet pipe 12 facilitates the chemical sewage to be discharged from the tank body 10 after the reaction treatment is completed. Valves are provided on the sewage pipe 13, the treatment agent pipe 14 and the liquid outlet pipe 12 to facilitate opening and closing control. At the same time, the sewage pipe 13, the treatment agent pipe 14 and the liquid outlet pipe 12 are all made of PVC. PVC pipes have strong corrosion resistance, are easy to bond, are low in price, and have a hard texture. Figure 1-5 As shown, the upper end of the main stirring shaft 16 extends out of the tank body 10 and is fixed with a pulley 15. An external stirring motor (not shown in the figure) can drive the main stirring shaft 16 to rotate and stir through a belt. The upper end of the main stirring shaft 16 is rotatably connected to the tank body 10 through a thrust bearing 17. The thrust bearing 17 is also called a thrust bearing, which is composed of two thrust washers or more thrust washers and a number of rolling bodies. It can not only facilitate the rotation of the main stirring shaft 16, but also bear the axial load brought by the main stirring shaft 16 and its accessories.

[0038] like Figure 2-5 As shown, the present invention further includes two swing arms 21 , three auxiliary stirring shafts 43 and a stirring cover 53 which are sequentially arranged along the axial direction of the main stirring shaft 16 .

[0039] like Figure 2-3As shown, the swing arm 21 is hinged to the main stirring shaft 16 and is provided with a first stirring blade. Two swing arms 21 are provided so that the force on the main stirring shaft 16 is more uniform when rotating, and the range and frequency of action of the swing arm 21 can also be improved. The swing arm 21 is hinged to the main stirring shaft 16. Specifically, a connecting piece 22 is provided on the main stirring shaft 16, and the swing arm 21 and the connecting piece 22 are hinged by a hinge, which enables the swing arm 21 to not only rotate around the axis of the tank body 10 driven by the main stirring shaft 16, but also to swing up and down when the speed of the main stirring shaft 16 changes, adding a new stirring dimension, which can increase the stirring range of the swing arm 21, and can also generate turbulence, thereby enhancing the contact probability between the chemical sewage and the treatment agent, and improving the reaction efficiency and effect; and the provision of the first stirring blade 23 can also further increase the range of action of the swing arm 21, and improve the reaction efficiency and effect of the chemical sewage and the treatment agent.

[0040] In at least one embodiment, Figure 2-3 As shown, the auxiliary stirring shaft 43 is distributed along the radial direction of the main stirring shaft 16 and one end is rotationally connected to the main stirring shaft 16, and the auxiliary stirring shaft 43 and the main stirring shaft 16 are rotationally sealed. The auxiliary stirring shaft 43 is horizontally arranged and can rotate around the axis of the tank body 10 under the drive of the main stirring shaft 16, so as to control the contact probability, reaction rate and effect of the chemical sewage and treatment agent in the middle area of ​​the tank body 10. A gear ring 40 is fixed on the inner wall of the middle part of the tank body 10, and the gear ring portion 41 of the gear ring 40 opens downward. A driven gear 42 meshing with the gear ring 40 is fixed at the other end of the auxiliary stirring shaft 43. Since the driven gear 42 meshes with the gear ring portion 41 of the gear ring 40 for transmission, when the auxiliary stirring shaft 43 rotates with the main stirring shaft 16, the driven gear 42 rotates around the gear ring 4 0 rotates, and at the same time, the driven gear 42 also rotates around its own axis, thereby driving the auxiliary stirring shaft 43 to rotate around its own axis, thereby adding a new stirring dimension again, which can increase the stirring range of the auxiliary stirring shaft 43, and can also generate turbulence, thereby enhancing the contact probability between the chemical wastewater and the treatment agent, and improving the reaction efficiency and effect; a second stirring blade 44 is provided on the auxiliary stirring shaft 43, and the setting of the second stirring blade 44 can also further increase the range of action of the swing arm 21. At the same time, the second stirring blade 44 can rotate around the main stirring shaft 16 and also around the axis of the auxiliary stirring shaft 43, thereby adding a new stirring dimension again, realizing efficient mixing without dead angles in the middle area of ​​the entire tank body 10, and improving the reaction efficiency and effect of the chemical wastewater and the treatment agent.

[0041] like Figure 2 , Figure 7As shown, the present invention also includes an elastic membrane 30 sealed and fixed on the inner wall of the upper part of the tank body 10 and a first magnet block 24 fixed on one of the swing arms 21. The elastic membrane 30 is made of rubber with good corrosion resistance. The elastic membrane 30 is bonded and sealed with the inner wall of the tank body 10 to form a gas storage cavity. A second magnet block 33 that repels the first magnet block 24 is fixed on the elastic membrane 30. An air outlet 32 ​​is also provided on the elastic membrane 30, and a third one-way valve is provided on the air outlet 32 ​​for gas to enter the tank body 10 from the air storage cavity. An air inlet 31 is also provided on the inner wall of the tank body 10 covered by the elastic membrane 30, and a fourth one-way valve is provided on the air inlet 31 for gas to enter the air storage cavity from the outside. The coordinated use of the third one-way valve and the fourth one-way valve realizes the one-way blowing of external gas or external air into the tank body 10. Of course, in order to avoid excessive pressure in the tank body 10, a pressure relief valve can be arranged on the top of the tank body 10 to control the pressure in the tank body 10 within a set range. Specifically, the first magnet block 24 is bonded and fixed to the swing arm 21, and the second magnet block 33 is bonded and fixed to the elastic membrane 30. The first magnet block 24 and the second magnet block 33 repel each other magnetically; the first magnet block 24 and the second magnet block 33 can be made of sintered neodymium iron boron, and the surface of the sintered neodymium iron boron needs to be plated, generally with zinc, nickel, environmentally friendly zinc, environmentally friendly nickel, nickel-copper-nickel, environmentally friendly nickel-copper-nickel, etc.

[0042] The rotation of the main stirring shaft 16 can drive the swing arm 21 to rotate, and then drive the first magnet block 24 to continuously generate linkage with the second magnet block 33. When the first magnet block 24 is close to the second magnet block 33, due to the magnetic repulsion between the first magnet block 24 and the second magnet block 33, the repulsive force of the two further squeezes the elastic membrane 30, so that the volume of the air storage cavity is reduced, and the air in the air storage cavity enters the tank body 10 through the third one-way valve, which can not only fully realize the mixing reaction of air and chemical sewage, but also play an air-inflating role, generate turbulence in the chemical sewage and the treatment agent, and further increase the contact probability and surface of the chemical sewage and the treatment agent. In addition, it cooperates with the swing arm 21 to achieve front and rear clamping of the chemical sewage and the treatment agent, and once again adds a new stirring dimension to achieve multi-faceted and multi-dimensional mixed contact between the chemical sewage and the treatment agent in the tank body 10. When the first magnet block 24 is away from the second magnet block 33, the elastic membrane 30 recovers under the action of its own elastic force, and the volume of the air storage cavity increases. Air enters the air storage cavity from the outside through the fourth one-way valve for replenishment, and this cycle repeats. In this process, due to the deformation of the elastic membrane 30 similar to breathing, of course, in order to enhance the restoring force of the elastic membrane 30, a spring supporting the elastic membrane 30 can also be provided in the air storage cavity.

[0043] In order to reduce the interference to the first magnet block 24 and the second magnet block 33, the tank body 10 and its components in the present invention are made of non-ferromagnetic materials such as non-magnetic steel as much as possible.

[0044] In at least one embodiment, Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the stirring cover 53 is in a cone shape with a small top and a large bottom, and a plurality of lower stirring blades 54 are convexly arranged on its outer wall. The lower stirring blades 54 are in a cone shape with a small top and a large bottom. A plurality of drainage holes 55 are evenly distributed on the outer edge of the stirring cover 53. Firstly, the stirring cover 53 is provided with lower stirring blades 54, which can stir and mix the bottom of the tank body 10 in a large range as the main stirring shaft 16 rotates. At the same time, the special shape of the lower stirring blades 54 cooperates with the stirring cover 53, and can make the chemical sewage and the mixed liquid of the treatment agent at the bottom of the tank body 10 surge upward, so as to realize the positive large circulation of the tank body 10 up and down, and at the same time, increase the length of the stirring cover 53 and the lower stirring blades 54 along the axial direction of the tank body 10, greatly increase the stirring and mixing depth, stirring and mixing effect and efficiency of the lower stirring blades 54. Secondly, the main stirring shaft 16 is hollow, and its bottom is open and slidably connected with a piston 57. The cross-sections of the inner cavity of the main stirring shaft 16 and the piston 57 are both elliptical, as shown in FIG. Figure 5 , Figure 8As shown, the lower end of the piston 57 is also coaxially fixed with a groove wheel 50, and the side wall of the groove wheel 50 is provided with a clamping groove 59 distributed up and down along its axial direction and closed. The highest point and the lowest point of the clamping groove 59 in the axial direction of the main stirring shaft 16 must have a height difference, and the height difference is the maximum stroke of the piston 57 in the inner cavity of the main stirring shaft 16. The bottom of the tank body 10 is provided with a lower sleeve 58 and a fixing rod 51. The bottom of the groove wheel 50 is fixed with a guide rod sleeved with the lower sleeve. The upper end of the fixing rod 51 is provided with a pin 52 that slides in the clamping groove 59. The upper part of the main stirring shaft 16 is provided with a liquid inlet hole 20, and a liquid inlet hole 20 is provided for the liquid in the tank body 10. A first one-way valve flows into the inner cavity of the main stirring shaft 16, and a liquid outlet hole 56 is provided at the lower part of the main stirring shaft 16. A second one-way valve is provided at the liquid outlet hole 56 for the liquid in the inner cavity of the main stirring shaft 16 to flow into the tank body 10. The coordinated use of the first one-way valve and the second one-way valve realizes the one-way flow of the mixed liquid of the chemical sewage and the treatment agent at the upper part of the tank body 10 into the inner cavity of the main stirring shaft 16 and then to the bottom space of the tank body 10 under the stirring cover 53. The connection between the upper end of the stirring shaft and the main stirring shaft 16 is located above the liquid outlet hole 56. When the main stirring shaft 16 rotates, it can drive the elliptical piston 57 to rotate, thereby driving the groove wheel 50 to rotate. The groove wheel 50 and the pin 52 on the fixed guide rod cooperate to form a cam-like mechanism. The groove wheel 50 will also realize axial movement under the guidance of the pin 52 while rotating, that is, it drives the piston 57 to slide up and down along the inner cavity of the main stirring shaft 16. When the piston 57 slides downward, the volume of the inner cavity of the main stirring shaft 16 increases to generate suction, and the chemical sewage and treatment agent mixed liquid on the upper part of the tank body 10 enter the inner cavity of the main stirring shaft 16 from the liquid inlet hole 20. When the piston 57 slides upward, the volume of the inner cavity of the main stirring shaft 16 decreases, and the chemical sewage and treatment agent mixed liquid in the inner cavity of the main stirring shaft 16 are discharged into the stirring The bottom space of the tank body 10 below the cover 53 adds a circulation route from the upper part of the tank body 10 directly to the bottom of the tank body 10 (and this circulation process itself is also a mixing and stirring reaction process), and the upper part of the tank body 10 is just the input source of chemical wastewater and treatment agent, and the setting of the stirring cover 53 and the drainage hole 55 thereon can cooperate with the lower stirring blade 54 to quickly surge the bottom space of the tank body 10 below the stirring cover 53 upward, thereby adding a new stirring dimension, realizing efficient, rapid and uniform mixing of the upper and lower areas of the entire tank body 10, and improving the reaction efficiency and effect of chemical wastewater and treatment agent.

[0045] In addition, the main stirring shaft 16, the swing arm 21, the auxiliary stirring shaft 43, the stirring cover 53 and the elastic membrane 30 are not isolated, but are related to each other and work together. The main stirring shaft 16 is the power source of the entire device, and the swing arm 21, the auxiliary stirring shaft 43, and the stirring cover 53 stir and mix at the upper, middle and lower parts of the tank body 10 respectively, while also playing a relay role in the efficient upper and lower circulation of the chemical sewage and the treatment agent in the tank body 10, in conjunction with the inflation of the elastic membrane 30 and the additional circulation route added to the inner cavity of the main stirring shaft 16, such a multi-pronged approach and an interlocking manner not only fully realize the contact, mixing and reaction effects of the chemical sewage and the treatment agent, but also greatly improve the treatment efficiency of the entire device for chemical sewage.

[0046] The present invention also provides a method for treating chemical wastewater, which is based on the chemical wastewater treatment device as described above and comprises the following steps:

[0047] Step 1, passing the filtered chemical wastewater into the tank through the sewage pipe, assuming that the volume of the tank is V, then the amount of chemical wastewater introduced is 0.6V;

[0048] Step 2, start the stirring motor to drive the main stirring shaft to rotate, and gradually add the treatment agent matched with the chemical sewage ratio into the tank through the treatment agent pipe; during the process, the speed of the main stirring shaft gradually increases from 45r / min to 100r / min, and then gradually decreases to 45r / min, and repeats this cycle, and each cycle lasts for 0.5h, so that the auxiliary stirring shaft can swing up and down when the speed of the main stirring shaft changes, adding a new stirring dimension, which can increase the stirring range of the swing arm and generate turbulence. At the same time, for other components in the tank body, periodic movement can also achieve a diversified stirring effect of tension and relaxation, enhance the contact probability between chemical sewage and the treatment agent, and improve the reaction efficiency and effect;

[0049] Step 3: After the reaction lasts for 3-4 hours, turn off the stirring motor and open the liquid outlet pipe to discharge the treated chemical wastewater.

[0050] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to implement the aforementioned chemical wastewater treatment method.

[0051] Although the above methods are illustrated and described as a series of actions for simplicity of explanation, it should be understood and appreciated that these methods are not limited by the order of the actions, because according to one or more embodiments, some actions may occur in different orders and / or concurrently with other actions from the illustrations and descriptions herein or not illustrated and described herein but understandable to those skilled in the art. It will be further appreciated by those skilled in the art that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly explain this interchangeability of hardware and software, various illustrative components, frames, modules, circuits, and steps are generally described in the form of their functionality above. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. The technical staff can implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention. The various illustrative logic blocks, modules, and circuits described in conjunction with the embodiments disclosed herein may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, a battery compartment control board, a micro-battery compartment control board, or a state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in cooperation with a DSP core, or any other such configuration. The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components. In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented as a computer program product in software, each function may be stored on a computer-readable medium or transmitted therefrom as one or more instructions or codes.Computer-readable media include both computer storage media and communication media, including any media that facilitates a computer program to be transferred from one place to another. Storage media can be any available media that can be accessed by a computer. As an example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or any other media that can be used to carry or store the agreed program code in the form of instructions or data structures and can be accessed by a computer. Any connection is also properly referred to as computer-readable media. For example, if software is transmitted from a web site, a central control computer, or other remote sources using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disk often reproduces data magnetically, while disc reproduces data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0052] Although the above methods are illustrated and described as a series of actions for simplicity of explanation, it should be understood and appreciated that these methods are not limited by the order of the actions, because according to one or more embodiments, some actions may occur in a different order and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but understandable to those skilled in the art.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A chemical wastewater treatment device, characterized in that: The invention comprises a tank body, a main stirring shaft rotatably arranged in the tank body, a sewage pipe connected to the top of the tank body, a treatment agent pipe and a liquid outlet pipe connected to the bottom of the tank body; it also comprises a swing arm, an auxiliary stirring shaft and a stirring cover arranged in sequence along the axial direction of the main stirring shaft; the swing arm is hinged to the main stirring shaft and is provided with a first stirring blade thereon, the auxiliary stirring shaft is distributed along the radial direction of the main stirring shaft and is rotatably connected to the main stirring shaft at one end, a second stirring blade is provided on the auxiliary stirring shaft, the stirring cover is in a conical shape with a small top and a large bottom and a plurality of lower stirring blades are convexly arranged on its outer wall, a plurality of drainage holes are evenly distributed at the outer edge of the stirring cover, the main stirring shaft is hollow, the bottom of which is open and slidably connected A piston is connected, the inner cavity of the main stirring shaft and the cross-section of the piston are both elliptical, a groove wheel is coaxially fixed to the lower end of the piston, and the side wall of the groove wheel is provided with a clamping groove which is distributed up and down along its axis and is closed, a lower shaft sleeve and a fixing rod are provided at the bottom of the tank body, a guide rod which is sleeved with the lower shaft sleeve is fixed at the bottom of the groove wheel, a pin which is slidably matched with the clamping groove is provided at the upper end of the fixing rod, a liquid inlet hole is provided at the upper part of the main stirring shaft, a first one-way valve for liquid in the tank body to flow into the inner cavity of the main stirring shaft is provided at the liquid inlet hole, a liquid outlet hole is provided at the lower part of the main stirring shaft, a second one-way valve for liquid in the inner cavity of the main stirring shaft to flow into the tank body is provided at the liquid outlet hole, and the connection between the upper end of the stirring shaft and the main stirring shaft is located above the liquid outlet hole.

2. A chemical wastewater treatment device according to claim 1, characterized in that: A gear ring is fixed on the inner wall of the middle part of the tank body, the gear ring tooth opening of the gear ring faces downward, and a driven gear meshing with the gear ring is fixed on the other end of the auxiliary stirring shaft.

3. A chemical wastewater treatment device according to claim 2, characterized in that: It also includes an elastic membrane sealed and fixed on the inner wall of the upper part of the tank body and a first magnet block fixed on one of the swing arms. The elastic membrane and the inner wall of the tank body form an air storage cavity. A second magnet block that repels the first magnet block is fixed on the elastic membrane. The elastic membrane is also provided with an air outlet, and the air outlet is provided with a third one-way valve for allowing gas to enter the tank body from the air storage cavity. The inner wall of the tank body covered by the elastic membrane is also provided with an air inlet, and the air inlet is provided with a fourth one-way valve for allowing gas to enter the air storage cavity from the outside.

4. A chemical wastewater treatment device according to claim 3, characterized in that: The first magnet block is bonded and fixed on the swing arm, and the second magnet block is bonded and fixed on the elastic film.

5. A chemical wastewater treatment device according to any one of claims 1 to 4, characterized in that: The lower stirring blade is in a cone shape that is smaller at the top and larger at the bottom.

6. A chemical wastewater treatment device according to any one of claims 1 to 4, characterized in that: Two swing arms are provided and three auxiliary stirring shafts are provided.

7. A chemical wastewater treatment device according to any one of claims 1 to 4, characterized in that: The upper end of the main stirring shaft extends out of the tank body and is fixed with a pulley.

8. A chemical wastewater treatment device according to claim 7, characterized in that: The upper end of the main stirring shaft is rotatably connected to the tank body through a thrust bearing.

9. A method for treating chemical wastewater, characterized in that: The method is based on the chemical wastewater treatment device according to any one of claims 1 to 8, comprising the following steps: Step 1, passing the filtered chemical wastewater into the tank through the sewage pipe, assuming that the volume of the tank is V, then the amount of chemical wastewater introduced is 0.6V; Step 2, start the stirring motor to drive the main stirring shaft to rotate, and gradually add the treatment agent matched with the chemical wastewater ratio into the tank through the treatment agent pipe; during the process, the speed of the main stirring shaft gradually increases from 45r / min to 100r / min, and then gradually decreases to 45r / min, and repeats this cycle, and each cycle lasts for 0.5h; Step 3: After the reaction lasts for 3-4 hours, turn off the stirring motor and open the liquid outlet pipe to discharge the treated chemical wastewater.

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