Pretreatment system for refractory industrial wastewater

Abstract

A degradation-resistant industrial wastewater pretreatment system comprises a treatment tank and a plurality of baffling walls which are uniformly and vertically arranged in the treatment tank at intervals, the plurality of baffling walls enable the treatment tank to form a back-and-forth treatment channel, and a filler device which reacts with industrial wastewater is arranged between every two adjacent baffling walls. And ultrasonic vibration plates acting on the filling device are detachably arranged on the opposite sides of the two adjacent baffling walls. According to the utility model, the treatment efficiency and biodegradability of the refractory industrial wastewater are obviously improved, and the subsequent treatment difficulty and cost are reduced; meanwhile, the flexibility and maintainability of the system are enhanced through the modular design, the service life is prolonged, and an efficient, economical and environment-friendly new way is provided for industrial wastewater treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment system technical field, concretely relates to a kind of refractory industrial wastewater pretreatment system. BACKGROUND

[0002] Refractory industrial wastewater treatment has been a major challenge in the field of environmental protection. This kind of wastewater usually contains complex and difficult to degrade organic matter by conventional methods, posing a serious threat to the environment and ecosystem. Micro-electrolysis technology as an innovative treatment method, due to its high oxidation efficiency, simple operation and no secondary pollution, etc. In recent years, it has received extensive attention and application.

[0003] The core of micro-electrolysis technology is to use the potential difference between iron-carbon particles to build countless micro-batteries. In this system, iron becomes the anode because of its low potential, while carbon becomes the cathode because of its high potential. Under suitable acidic conditions, these micro-batteries can trigger a series of electrochemical reactions, generating free radicals such as hydroxyl radicals with strong oxidizing properties. These free radicals effectively decompose refractory substances in wastewater through redox reactions, thereby improving the biodegradability of wastewater and creating favorable conditions for subsequent biological treatment steps.

[0004] However, despite the many advantages of micro-electrolysis technology, some significant problems have been exposed in actual application. Among them, the hardening and passivation of fillers after long-term use are particularly prominent. These phenomena not only lead to a significant decrease in treatment efficiency and capacity, but also increase the difficulty and cost of maintenance and replacement of fillers. In addition, although the oxidation capacity of micro-electrolysis technology is strong, its oxidation effect is still limited for some particularly stubborn refractory substances. SUMMARY

[0005] The utility model provides a kind of refractory industrial wastewater pretreatment system to solve the technical problems pointed out in the background art.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is as follows:

[0007] A refractory industrial wastewater pretreatment system, comprising a treatment tank, a plurality of baffles uniformly spaced vertically arranged in the treatment tank, a plurality of baffles forming a processing channel that turns back and forth in the treatment tank, a filler device for reacting with industrial wastewater is arranged between adjacent two baffles, and an ultrasonic vibration plate acting on the filler device is detachably arranged on the side opposite to the adjacent two baffles.

[0008] Further, the filler device comprises a filler box, the filler box is positioned and placed on a support support through a positioning support, the support support is horizontally arranged in the treatment channel, the filler box is uniformly filled with iron-carbon filler inside, and reaction holes are uniformly arranged on the outer wall of the filler box.

[0009] Further, the ultrasonic vibration plate is one of square, rectangular and U-shaped structures, the ultrasonic vibration plate is detachably installed on the baffle wall through sliding rails and fixed clamping grooves, a plurality of ultrasonic transducers are arranged in the ultrasonic vibration plate in a rectangular or plum blossom shape, and each ultrasonic transducer is connected with an ultrasonic generator through a transmission line.

[0010] Further, aeration devices are arranged at the bottom between two adjacent ultrasonic vibration plates, and aeration generated by the aeration devices is provided by an aeration generating device.

[0011] Further, a hydrogen peroxide dosing port is arranged at the upper portion of the treatment tank.

[0012] Further, the filler box and the ultrasonic vibration plate are made of corrosion-resistant materials, a replacement opening is arranged at the upper end of the filler box, a cover plate is arranged at the replacement opening and can be opened and closed, and lifting rings are arranged at the top of the filler box and the ultrasonic vibration plate to facilitate lifting the filler box and the ultrasonic vibration plate out of the treatment tank.

[0013] Further, a water inlet valve pipe and a water inlet pump are arranged at one end of the treatment tank, and a drainage valve pipe is arranged at the other end of the treatment tank.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The refractory industrial wastewater pretreatment system integrates a baffle channel, an iron-carbon filler device, a detachable ultrasonic vibration plate, an aerator and a hydrogen peroxide dosing port, optimizes a wastewater flow path, strengthens micro-electrolysis and ultrasonic wave cooperative degradation, increases aeration to promote oxidation reaction and hydrogen peroxide auxiliary oxidation, realizes efficient pretreatment of the refractory industrial wastewater, facilitates maintenance and replacement of system components, improves the flexibility and durability of overall operation, significantly improves the treatment efficiency and biodegradability of the refractory industrial wastewater, reduces the difficulty and cost of subsequent treatment, enhances the flexibility and maintainability of the system through modular design, prolongs the service life, and provides an efficient, economical and environmentally friendly new way for industrial wastewater treatment. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor under the premise of the drawings.

[0017] Figure 1 The structure of the present application is shown in the figure;

[0018] Figure 2 The enlarged view of the positioning support of the present application is shown in the figure;

[0019] Figure 3 The front view and side view of the ultrasonic vibration plate of the present application are shown in the figure;

[0020] Figure 4 The installation schematic diagram of the ultrasonic vibration plate of the present application is shown in the figure. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or it can simply mean that the first feature is higher than the second feature in terms of horizontal height. The first feature can be directly below or obliquely below the second feature, or it can simply mean that the first feature is lower than the second feature in terms of horizontal height.

[0025] As shown in Figures 1-4 A kind of refractory industrial wastewater pretreatment system, including treatment pool, several interval uniform vertical setting in the baffling wall 6 in the treatment pool, several the baffling wall 6 makes the treatment pool form back and forth processing channel, the packing device for reaction with industrial wastewater is arranged between adjacent two the baffling wall 6, the opposite side of adjacent two the baffling wall 6 can be detachably provided with the ultrasonic vibration plate 7 acting on the packing device.

[0026] The packing device includes packing box 12, the packing box 12 is positioned and placed on support bracket 10 by positioning support 11, the support bracket 10 is transversely arranged in processing channel, the packing box 12 is uniformly filled with iron-carbon packing 13 inside, and the reaction hole is uniformly arranged on the outer wall of the packing box 12.

[0027] After industrial wastewater is introduced into the treatment pool, due to the existence of the baffling wall 6, the wastewater forms a back-and-forth flow path in the treatment pool. This design not only prolongs the residence time of the wastewater in the pool, but also increases the contact opportunities of the wastewater with the packing device and the ultrasonic vibration plate. The packing device between adjacent baffling walls 6 is composed of a packing box 12, which is stably placed on a support bracket 10 by a positioning support 11. The packing box 12 is uniformly filled with iron-carbon packing 13 inside, which is a common packing used in industrial wastewater treatment and can promote the decomposition of refractory organic matter in wastewater through micro-electrolysis. The wastewater enters the packing inside through the reaction holes on the outer wall of the packing box 12 and fully contacts with the iron-carbon packing 13, which causes a redox reaction to convert the organic matter in the wastewater into more easily degradable substances.

[0028] The detachable vibration plate installed on the baffling wall is controlled by the ultrasonic generating device to operate intermittently, releases ultrasonic waves at the ultrasonic vibrator through the transmission line, prevents or reduces the hardening and passivation phenomenon on the surface of the packing through the intermittent cavitation effect, and the cavitation effect also generates ·OH, enhancing the oxidation ability of the system to refractory substances.

[0029] Specifically, as shown in the figure, the ultrasonic vibration plate 7 is one of square, rectangular, U-shaped structure, the ultrasonic vibration plate 7 is detachably installed on the baffle wall 6 through the sliding rail 8 and the fixed clamping groove 15, the ultrasonic vibration plate 7 is internally provided with a plurality of ultrasonic transducers 16 in a rectangular or plum blossom shape, and each ultrasonic transducer 16 is connected with the ultrasonic generator 4 through the transmission line 5. The ultrasonic vibration plate is U-shaped, made of corrosion-resistant materials such as stainless steel, has a long service life, and is fixed on the pretreatment system baffle wall through the sliding rail and the fixed clamping groove device, can be lifted out of the pretreatment system through the lifting ring 17 and the sliding rail, the vibration transducers in the vibration plate are arranged in a plum blossom shape, have the same size, and are convenient for disassembly, maintenance and replacement. The ultrasonic frequency, reaction time and interval time of the ultrasonic generator can be adjusted and set through the control panel, and the ultrasonic generator is provided with overload protection, over-temperature protection and alarm device.

[0030] Specifically, as shown in the figure, the bottom between the two adjacent ultrasonic vibration plates 7 is provided with an aerator 9, and the aeration generated by the aerator 9 is provided by the aeration generating device 3. The aerator can be an aeration disc or an aeration pipe, etc., which accelerates the reaction rate.

[0031] Specifically, as shown in the figure, the upper part of the treatment tank is provided with a hydrogen peroxide dosing port 18.

[0032] Specifically, as shown in the figure, the filler box 12 and the ultrasonic vibration plate 7 are made of corrosion-resistant materials, the upper end of the filler box 12 is provided with a material replacement opening, the material replacement opening is provided with a cover plate which can be opened and closed, and the filler box 12 and the ultrasonic vibration plate 7 are provided with a lifting ring 17 at the top for lifting out of the treatment tank. The iron-carbon filler arranged in the filler box can facilitate the replacement of the filler, and the detachable ultrasonic vibration plate is arranged at both ends of the filler box, the ultrasonic frequency, reaction time and interval time can be adjusted under the control of the ultrasonic generator control system, and under intermittent operation, the surface of the filler is effectively prevented from being hardened and passivated, and the service life of the filler is prolonged. The filler box is provided with a lifting ring, which can be lifted out of the pretreatment system through the lifting ring, and the replacement of the iron-carbon filler is completed by opening the filler port cover plate.

[0033] Specifically, as shown in the figure, it also includes a water inlet valve pipe 2 and a water inlet pump 1 arranged at one end of the treatment tank, and a drain valve pipe 14 arranged at the other end of the treatment tank.

[0034] The utility model discloses a wastewater pretreatment system, which comprises a treatment tank, a water inlet valve pipe, a water inlet pump, an ultrasonic generator, a transmission line, an ultrasonic vibration plate, an aeration device, a filler box, a lifting ring, a hydrogen peroxide dosing port, a drain valve pipe and a baffle wall. 2+, realize that part of organic matter in wastewater is reduced; at the same time, the addition of hydrogen peroxide, so that the system occurs Fenton reaction, produce strong oxidizing ability of hydroxyl radicals (·OH), realize the further oxidation of organic matter in wastewater.

[0035] The pretreatment system for the refractory industrial wastewater integrates the baffling channel, the iron-carbon filler device, the detachable ultrasonic vibration plate, the aerator and the hydrogen peroxide dosing port, realizes the efficient pretreatment of the refractory industrial wastewater by optimizing the wastewater flow path, strengthening the micro-electrolysis and the ultrasonic synergistic degradation, increasing the aeration to promote the oxidation reaction and the hydrogen peroxide auxiliary oxidation.

[0036] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0037] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A system for the pretreatment of recalcitrant industrial wastewater, characterized in that, The application relates to an industrial wastewater treatment device, which comprises a treatment pool, a plurality of baffle walls (6) vertically and evenly arranged in the treatment pool, the baffle walls (6) form a treatment channel with a back-and-forth turn, a filler device for reacting with industrial wastewater is arranged between two adjacent baffle walls (6), and an ultrasonic vibration plate (7) for the filler device is detachably arranged on the side opposite to the two adjacent baffle walls (6).

2. The system for pretreatment of industrial wastewater according to claim 1, wherein The filler device comprises a filler box (12) which is positioned on a supporting support (10) through a positioning support (11), the supporting support (10) is horizontally arranged in the treatment channel, the filler box (12) is uniformly filled with iron-carbon fillers (13) inside, and reaction holes are uniformly arranged on the outer wall of the filler box (12).

3. The system for pretreatment of industrial wastewater according to claim 2, wherein The ultrasonic vibration plate (7) is one of square, rectangular and U-shaped structures, the ultrasonic vibration plate (7) is detachably installed on the baffle wall (6) through a sliding rail (8) and a fixed clamping groove (15), a plurality of ultrasonic vibrators (16) are arranged in the ultrasonic vibration plate (7) in a rectangular or plum blossom shape, and each ultrasonic vibrator (16) is connected with an ultrasonic generator (4) through a transmission line (5).

4. The system for pretreatment of industrial wastewater according to claim 3, wherein An aerator (9) is arranged at the bottom between two adjacent ultrasonic vibration plates (7), and the aerator (9) is provided with aeration generated by an aeration generating device (3).

5. The system for pretreatment of industrial wastewater according to claim 4, wherein A hydrogen peroxide adding port (18) is arranged on the upper portion of the treatment pool.

6. The system for pretreatment of industrial wastewater according to claim 5, wherein The filler box (12) and the ultrasonic vibration plate (7) are made of corrosion-resistant materials, an end of the filler box (12) is provided with a replacement port, a cover plate is arranged on the replacement port and can be opened and closed, and a lifting ring (17) is arranged on the top of the filler box (12) and the ultrasonic vibration plate (7) to facilitate lifting the filler box (12) and the ultrasonic vibration plate (7) out of the treatment pool.

7. The system for pretreatment of industrial wastewater according to claim 6, wherein The application further comprises a water inlet valve pipe (2) and a water inlet pump (1) arranged at one end of the treatment pool, and a water outlet valve pipe (14) arranged at the other end of the treatment pool.

Images