CN117985818A - Reaction module, stepped reaction device and sewage treatment equipment - Google Patents

Abstract

The invention relates to a reaction module, a stepped reaction device and sewage treatment equipment. A reaction module for treating wastewater, comprising: the anode cover comprises a cover body with a waste gas port and a plurality of anode plates fixedly arranged on the anode cover; the cathode barrel is used for containing the sewage and comprises a barrel body and a plurality of cathode plates fixedly arranged on the barrel body, the barrel body is provided with a reaction water inlet, a reaction water outlet arranged below the reaction water inlet and a sewage outlet arranged below the reaction water outlet, and the anode cover is covered on the cathode barrel so as to insert the anode plate between the cathode plates to form staggered arrangement of the cathode plates and the anode plates; the insulating spacer tube is fixedly arranged between the cathode barrel and the anode cover; and the electrodes of the power supply are respectively connected with the cathode barrel and the anode cover. The reaction module solves the problem of overflow of waste gas and deposition of sludge at the bottom of the reaction module in the reaction process.

Description

Reaction module, stepped reaction device and sewage treatment equipment

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a reaction module, a stepped reaction device and sewage treatment equipment.

Background

In the development of modern industry, sewage treatment is a key link. One of the main methods for treating the sewage with high difficulty at present is an electrocatalytic oxidation technology, which can effectively degrade organic matters in the wastewater and generate a vein breaking effect on metal ionic bonds, and is a clean and efficient wastewater pretreatment means which only consumes electricity and has no chemical agent addition.

The existing electrocatalytic oxidation equipment objectively has the problems of anode consumption, fast cathode weight increasing time, waste gas generation, low reaction efficiency, energy consumption waste and the like. Along with the accumulation of the service time of the equipment, the cathode structure is gradually increased, and the mud accumulation at the bottom of the reaction tank is serious, so that the liquid phase mass transfer is poor, the degradation of polluted organic matters is poor, and the metal ion channel breaking effect is reduced. The single power supply current and voltage parameter setting has narrow regulation rate for the reaction efficiency of the wastewater, and meanwhile, the power utilization efficiency of the power supply is low, so that the strategy of saving energy and sustainable development is not met. Therefore, in order to improve the reaction efficiency of the wastewater of the equipment, improve the energy efficiency of the power supply, use efficiency, reduce the failure rate of the use and maintenance workload, the following solutions are specially proposed.

Disclosure of Invention

Based on the problems, such as anode consumption, cathode weight gain, waste gas generation, energy consumption waste and the like, of the conventional electrocatalytic oxidation equipment are required to be objectively solved, and a reaction module, a stepped reaction device and sewage treatment equipment are provided.

A reaction module for treating wastewater, comprising:

the anode cover comprises a cover body with a waste gas port and a plurality of anode plates fixedly arranged on the anode cover;

The cathode barrel comprises a barrel body for containing the sewage and a plurality of cathode plates fixedly arranged on the barrel body, the barrel body is provided with a reaction water inlet, a reaction water outlet arranged below the reaction water inlet and a drain outlet arranged below the reaction water outlet, and the anode cover is covered on the cathode barrel so as to insert the anode plates between the cathode plates to form staggered arrangement of the cathode plates and the anode plates;

the insulating spacer tube is fixedly arranged between the cathode barrel and the anode cover; and

And the electrodes of the power supply are respectively connected with the cathode barrel and the anode cover.

In one embodiment, the barrel body comprises a vertical pipeline and a mud water collecting bucket fixedly connected to one end, far away from the insulating interval pipe, of the vertical pipeline, the reaction water inlet is formed in the upper end of the vertical pipeline, the reaction water outlet is formed in the lower end of the vertical pipeline, the mud water collecting bucket is of an inverted conical structure, and the sewage draining outlet is formed in the bottom of the mud water collecting bucket.

In one embodiment, the cathode plates are arranged in parallel in the vertical pipeline, and the anode plates are fixedly connected to the cover body in parallel.

In one embodiment, the cathode plates are equally spaced apart from each other and the anode plates are equally spaced apart from each other.

In one embodiment, the height of the anode plate is less than the sum of the height of the riser and the height of the insulating spacer.

In one embodiment, the end of the cathode plate adjacent to the insulating spacer tube is flush with the end of the riser adjacent to the insulating spacer tube.

In one embodiment, the anode cover further comprises an insulating block, and the insulating block is fixedly arranged at two sides of the anode plate.

In one embodiment, the anode plate and the cathode plate are provided with a plurality of flow-through holes.

In one embodiment, the reaction module further comprises an insulating plate, and the cathode barrel is fixedly arranged on the insulating plate.

In one embodiment, the reaction module further comprises a plurality of conductive fixing plates and a connection copper bar, wherein the conductive fixing plates are respectively fixed on the outer side of the anode cover and the outer side of the cathode barrel, and the connection copper bar is respectively connected with the conductive fixing plates and the electrodes of the power supply.

A stepwise reaction apparatus comprising:

A plurality of reaction modules as claimed in any one of the preceding claims, the reaction modules being arranged in sequence;

The reaction modules are sequentially communicated by the module pipelines, one end of each module pipeline is communicated with a reaction water outlet of the previous reaction module, and the other end of each module pipeline is communicated with a reaction water inlet of the next reaction module;

The conductivity probe is arranged on the module pipeline, the reaction water inlet of the reaction module and the reaction water outlet of the reaction module;

The waste gas collecting pipelines are communicated with waste gas ports of the reaction modules; and

And the water outlet pipeline is communicated with the reaction water outlet of the last reaction module.

A sewage treatment apparatus comprising:

The pH callback tank is provided with an acid adding port and a callback water outlet;

A step reaction apparatus as claimed in any one of the preceding claims; and

A connecting pipe; the connecting pipeline is communicated with the pH callback pool and the reaction water inlet of the first reaction module of the stepped reaction device.

In one embodiment, a pH detection assembly and a conductivity detection assembly are arranged in the connecting pipeline.

In one embodiment, the sewage treatment apparatus further comprises a filtering device, the filtering device comprises a filter bag filter, a main sewage pipe and a plurality of main sewage branch pipes communicated with the main sewage pipe, the main sewage branch pipes are respectively communicated with sewage outlets of the reaction modules of the step-type reaction device, and the main sewage pipe is communicated with a water inlet of the filter bag filter.

In one embodiment, the filtration device further comprises a conduit pump disposed in a portion of the main blowdown conduit between the filter bag filter and the main blowdown conduit.

In one embodiment, the filtration device further comprises a turbidity meter and an electrically operated valve, the turbidity meter being electrically connected to the tubing pump and the electrically operated valve, the turbidity meter and the electrically operated valve being disposed in the drain branch.

In one embodiment, the step reaction device is provided with a backflow water inlet, the backflow water inlet is formed in a first reaction module of the step reaction device, and the filtering device comprises a backflow pipeline which is communicated with the water outlet of the filter bag filter and the backflow water inlet.

In one embodiment, the sewage treatment apparatus further comprises a plurality of aeration stirring devices and an aeration pipeline, wherein the aeration stirring devices are respectively arranged in the pH callback tank and the reaction module of the stepped reaction device, and the aeration pipeline is communicated with the aeration stirring devices.

Above-mentioned reaction module can be through the mode of electrocatalytic oxidation treatment sewage, in the reaction, and the metal ion in the sewage is to the bottom deposit of this cathode barrel, discharges through this drain, and the waste gas that organic matter degradation in the sewage produced is discharged from this waste gas mouth of top, has solved the problem of waste gas excessive, reaction module bottom silt deposit in the reaction. This cathode barrel can be as the reaction tank, realizes that the negative pole is integrative with the reaction tank, has reduced investment cost, has slowed down the structure clearance cycle simultaneously, and this power is connected with this reaction plate electricity through this cathode barrel and this anode cover, and the conductive contact point is isolated with waste gas waste water, has avoided waste water and waste gas erosion electrode, has slowed down anodic oxidation, the problem of negative pole corruption, has prolonged life. The current or voltage of each group of reaction modules of the stepped reaction device can be set in a stepped manner or in a curved manner according to the change condition of the conductivity, so that the reaction rate of wastewater can be effectively improved. The power supply power of each group of modules can be formulated with different powers, so that the power supply power can be fully and effectively utilized, and compared with a single power supply, the energy utilization efficiency is improved, and the power efficiency utilization rate of the power supply is increased.

Drawings

Fig. 1 is a schematic perspective view of a sewage treatment apparatus according to an embodiment of the present application;

fig. 2 is a perspective view showing a reaction module of the sewage treatment apparatus according to the above embodiment of the present application;

fig. 3 is a perspective view showing an anode cover of a reaction module of a sewage treatment apparatus according to the above-described embodiment of the present application;

Fig. 4 is a partially enlarged schematic view showing an anode plate of a reaction module of a sewage treatment apparatus according to the above-described embodiment of the present application;

fig. 5 is a perspective view showing a cathode tub of a reaction module of a sewage treatment apparatus according to the above embodiment of the present application;

fig. 6 is a schematic cross-sectional view showing a cathode tub of a reaction module of a sewage treatment apparatus according to the above embodiment of the present application;

Fig. 7 is a schematic diagram showing a step voltage or step current parameter setting of a step reaction device of a sewage treatment apparatus according to the above-described embodiment of the present application.

Reference numerals: 10. a reaction module; 11. an anode cover; 111. a cover body; 112. an anode plate; 113. a waste gas port; 114. an overflow hole; 115. an insulating block; 12. a cathode barrel; 121. a tub body; 1211. a vertical pipe; 1212. a mud water collection bucket; 122. a cathode plate; 123. a reaction water inlet; 124. a reaction water outlet; 125. a sewage outlet; 13. a power supply; 14. an insulating plate; 15. a conductive fixing plate; 16. connecting copper bars; 17. insulating spacer tubes; 20. a modular pipeline; 30. an exhaust gas collection pipe; 40. a pH callback pool; 50. a connecting pipe; 60. a filtering device; 61. a filter bag filter; 62. a main sewage draining pipeline; 63. a sewage discharge branch pipe; 64. a pipeline pump; 65. an electric valve; 66. a return line; 70. an aeration pipe; 80. a valve is overhauled; 90. a base frame.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 6, the present application provides a reaction module 10 for treating sewage, and the reaction module 10 may include an anode cap 11, a cathode barrel 12, an insulating spacer tube 17, and a power source 13. The anode cover 11 comprises a cover body 111 with a waste gas port 113 and a plurality of anode plates 112 fixedly arranged on the anode cover 11; the cathode barrel 12 comprises a barrel body 121 for containing the sewage and a plurality of cathode plates 122 fixedly arranged on the barrel body 121, the barrel body 121 is provided with a reaction water inlet 123, a reaction water outlet 124 arranged below the reaction water inlet 123 and a drain outlet 125 arranged below the reaction water outlet 124, the anode cover 11 is covered on the cathode barrel 12 so as to insert the anode plates 112 between the cathode plates 122, and staggered arrangement of the cathode plates 122 and the anode plates 112 is formed; the insulating spacer 17 is fixedly arranged between the cathode barrel 12 and the anode cover 11 to insulate the anode cover 11 and the cathode barrel 12, so as to avoid contact short circuit between the anode cover 11 and the cathode barrel 12, and the electrodes of the power supply 13 are respectively connected with the cathode barrel 12 and the anode cover 11.

It will be appreciated that the reaction module 10 can treat sewage by electrocatalytic oxidation, and the positive electrode and the negative electrode of the power supply 13 are respectively connected to the cover 111 of the anode cover 11 and the barrel 121 of the cathode barrel 12, so as to electrify the anode plate 112 and the cathode plate 122 respectively electrically connected to the cover 111 and the barrel 121, so that the anode plate 112 and the cathode plate 122 form an electronic flow loop in the sewage to perform electrocatalytic oxidation reaction on the sewage. During the reaction, metal ions in the sewage are deposited to the bottom of the cathode plate 122 and the cathode barrel 12, and discharged through the drain outlet 125, and the waste gas generated by degrading organic matters in the sewage is discharged from the waste gas outlet 113 above, so that the problems of waste gas overflow and sludge deposition at the bottom of the reaction module 10 during the reaction are solved. The cathode barrel 12 can be used as a reaction tank, the cathode and the reaction tank are integrated, the investment cost is reduced, meanwhile, the scale cleaning period is slowed down, the power supply 13 is electrically connected with the reaction plate through the cathode barrel 12 and the anode cover 11, the conductive contact point is isolated from waste gas and waste water, the electrode is prevented from being corroded by the waste water and the waste gas, the problems of anodic oxidation and cathode corrosion are slowed down, and the service life is prolonged.

More specifically, as shown in fig. 2, 5 and 6, in one embodiment, the barrel 121 includes a vertical pipe 1211 and a mud water collecting bucket 1212 fixedly connected to an end of the vertical pipe 1211 far from the insulating spacer 17, the reaction water inlet 123 is opened at an upper end of the vertical pipe 1211, the reaction water outlet 124 is opened at a lower end of the vertical pipe 1211, the mud water collecting bucket 1212 has an inverted cone structure, and the drain outlet 125 is opened at a bottom of the mud water collecting bucket 1212. So arranged, sewage enters the vertical pipe 1211 from the reaction water inlet 123 at the upper end of the vertical pipe 1211, and electrocatalytic oxidation reaction occurs, wherein metal ions are deposited and collected through the muddy water collecting bucket 1212 below the vertical pipe 1211 to form a muddy water mixture to be discharged from the sewage outlet 125, waste gas is discharged through the waste gas outlet 113 above the vertical pipe 1211, and waste water is discharged through the reaction water outlet 124 at the lower end of the vertical pipe 1211, so that sewage separation is realized.

Alternatively, the insulating spacer 17 is connected to the anode cap 11 and the cathode tub 12 by flange connection, and may be provided on an annular rubber sealing material at a connection joint to prevent waste water from overflowing.

Illustratively, the cathode barrel 12 may be made of 316L stainless steel to provide the cathode barrel 12 with high resistance to acids, alkalis and corrosion. The outer wall of the cathode barrel 12 is painted with an insulating rust inhibitive paint to prevent the risk of electric shock. The anode group can be made of titanium base material, and the surface of the part contacted with the wastewater is coated with sintered inert metal so as to slow down the consumption of electrocatalytic oxidation. The insulating spacer 17 may be made of an insulating and corrosion-resistant plastic material, preferably a tetrafluoroplastic material.

Alternatively, as shown in fig. 3 and 5, in one embodiment, the cathode plates 122 are disposed in parallel within the vertical tubes 1211, and the anode plates 112 are affixed to the cover 111 in parallel. So configured, the anode plate 112 and the cathode plate 122 are spaced apart from each other within the vertical duct 1211 to be in sufficient contact with the contaminated water contained within the vertical duct 1211 to more comprehensively catalyze the oxidation reaction of the contaminated water, thereby improving the catalytic efficiency of the reaction module 10.

Preferably, as shown in fig. 3 and 5, in one embodiment, the spacing between the cathode plates 122 is the same and the spacing between the anode plates 112 is the same. So arranged, the reaction efficiency between each anode plate 112 and each cathode plate 122 is the same, so that the reaction loss of each anode plate 112 and each cathode plate 122 is similar, the service lives of each anode plate 112 and each cathode plate 122 are kept similar, and the overall service life of the reaction module 10 is prolonged.

Preferably, in one embodiment, the height of the anode plate 112 is less than the sum of the height of the riser 1211 and the height of the insulating spacer 17. By this arrangement, the anode plate 112 is prevented from extending into the mud water collecting bucket 1212, and the anode plate 112 is protected from being corroded by the mud water mixture.

Preferably, as shown in FIG. 5, in one embodiment, the end of the cathode plate 122 adjacent the insulating spacer tube 17 is flush with the end of the vertical tube 1211 adjacent the insulating spacer tube 17. By this arrangement, the problem of short circuit caused by the contact of the upper end of the cathode plate 122 with the anode cover 11 can be avoided.

More preferably, as shown in fig. 4, in one embodiment, the anode cover 11 further includes insulation blocks 115, and the insulation blocks 115 are fixedly disposed on two sides of the anode plate 112. Thus, the insulating block 115 can prevent the cathode plate 122 and the anode plate 112 from being staggered to cause short circuit, thereby providing the safety performance of the reaction module 10.

In particular, as shown in fig. 4 and 6, in one embodiment, the anode plate 112 and the cathode plate 122 are provided with a plurality of flow-through apertures 114. The overflow hole 114 is used to pass sewage, and can enhance the mobility of sewage in the vertical pipe 1211, thereby enhancing the reaction efficiency of the reaction module 10.

Preferably, in one embodiment, the reaction module 10 further comprises an insulating plate 14, and the cathode barrel 12 is fixed on the insulating plate 14. The insulating plate 14 is disposed at the bottom of the cathode barrel 12 to avoid potential safety hazard caused by leakage of the cathode barrel 12. The cathode barrel 12 may be secured to the insulator plate 14 by a plurality of support posts.

Optionally, as shown in fig. 2, in one embodiment, the reaction module 10 further includes a plurality of conductive fixing plates 15 and connection copper bars 16, wherein the conductive fixing plates 15 are respectively fixed on the outer side of the anode cover 11 and the outer side of the cathode barrel 12, and the connection copper bars 16 are respectively connected to the conductive fixing plates 15 and the electrodes of the power source 13. The connection copper bar 16 and the conductive fixing plate 15 cooperate to enable the power supply 13 to be firmly connected to the cathode barrel 12 and the anode cap 11, respectively, so as to maintain good conductive performance.

Further, as shown in fig. 1, the present application provides a step-like reaction apparatus, which may include:

The reaction modules 10, the module pipelines 20, the conductivity probe, the waste gas collecting pipeline 30 and the water outlet pipeline are sequentially arranged, the module pipelines 20 are sequentially communicated with each reaction module 10, wherein one end of each module pipeline 20 is communicated with the reaction water outlet 124 of the previous reaction module 10, the other end of each module pipeline 20 is communicated with the reaction water inlet 123 of the next reaction module 10, and the conductivity probe is arranged in the module pipeline 20, the reaction water inlet 123 of the reaction module 10 and the reaction water outlet 124 of the reaction module; the exhaust gas collecting pipe 30 is connected to the exhaust gas port 113 of each reaction module 10, and the water outlet pipe is connected to the reaction water outlet 124 of the last reaction module 10.

The stepped reaction device is characterized in that the constant value voltage or the constant value current of the reaction module is respectively given, and the conductivity of the sewage is detected on line through the conductivity probe, so that the conductivity of the sewage is gradually reduced to achieve the sewage treatment standard. So set up, every this reaction module 10 of this ladder reaction unit supplies power alone, provides the required power 13 of each reaction module 10 respectively, can reduce the conductivity of sewage fast, practices thrift the investment cost of reaction module 10. The exhaust gas collecting pipe 30 is used for connecting a pipe 50 fan to extract exhaust gas in each reaction module 10, solve the problem of exhaust gas overflow, and avoid the safety threat of exhaust gas factors to environmental health.

The reaction time is increased and reduced according to the change of the wastewater, so that the increase and reduction of modules can be realized rapidly, and the design allowance reserved due to the uncertainty of the wastewater is reduced, so that unnecessary investment cost waste is caused;

As shown in fig. 7, according to the requirements of the conductivity g1> G2> G3 … > gn+1 (G1 represents the conductivity of the wastewater at the reaction water inlet 123 of the first reaction module 10, G2 represents the conductivity of the wastewater at the module pipe 20 between the first reaction module 10 and the second reaction module 10, G3 represents the conductivity of the wastewater at the module pipe 20 of the second reaction module 10 and the third reaction module 10, gn+1 represents the conductivity of the wastewater at the reaction water outlet 124 of the last reaction module 10) and the wastewater standard-reaching conductivity value reduction monitored by the reaction water inlet 123 and the reaction water outlet 124 of the reaction module 10, and the flow rate and the volume of the wastewater treated by each reaction module 10 are identical, the relative reaction resistance R1< R2< R3 … < Rn of each reaction module 10 can be known clearly. Setting the output of each reaction module 10 with constant current by using an equal-power supply, wherein the voltage is U1> U2> U3 … > Un; setting the output of each reaction module 10 with constant voltage by using an equal power supply, wherein the current is I1< I2< I3 … < In; according to the characteristics of the stepped reaction module 10, the wastewater reaction rate can be effectively improved by a given stepped rising current, a self-defined rising curve current mode and a given stepped rising voltage and self-defined rising voltage curve mode; through the power supplies with different powers, the ladder current or the ladder voltage acts on each reaction module 10 respectively, so that the service efficiency of the power supply can be effectively improved, and unnecessary electric energy waste is caused. The high power supply manufacturing cost is much greater than the sum of the costs of several low power distributed power supplies.

It is noted that the outlet of the water outlet pipe is higher than the reaction water inlet 123100mm to 200mm of the reaction module 10.

Further, as shown in fig. 1, the present application also provides a sewage treatment apparatus, which may include: a pH callback tank 40, a step reaction device as described above, and a connection pipe 50. The pH callback tank 40 is provided with an acid adding port and a callback water outlet; the connection pipe 50 communicates the pH callback tank 40 with the reaction water inlet 123 of the first reaction module 10 of the stepwise reaction apparatus. In the process of treating sewage, acid is added into the pH callback tank 40 through the acid adding port to neutralize the pH value of the sewage in the pH callback tank 40, and then the sewage with the pH value regulated is led into the stepped reaction device through the connecting pipeline 50 for oxidation reaction.

Notably, the acid addition port of the pH callback tank 40 is 100mm to 200mm higher than the outlet of the water outlet pipe.

Preferably, in one of the embodiments, a pH detection assembly and a conductivity detection assembly are provided within the connecting conduit 50. The pH detection assembly is used to detect the pH of the wastewater to determine if an acid needs to be added to the pH callback tank 40. The conductivity detection component is used for detecting the conductivity of sewage.

Further, as shown in fig. 1, in one embodiment, the sewage treatment apparatus further comprises a filtering device 60, the filtering device 60 comprises a filter bag filter 61, a main sewage pipe 62 and a plurality of main sewage branch pipes 63 communicating with the main sewage pipe 62, the main sewage branch pipes 63 are respectively communicated with the sewage outlets 125 of the respective reaction modules 10 of the stepped reaction device, and the main sewage pipe 62 is communicated with the water inlet of the filter bag filter 61. The drain branch pipe 63 can collect the discharged mud-water mixture of each reaction module 10 to the drain main pipe 62, and convey the mud-water mixture to the filter bag filter 61 through the drain main pipe 62, the mud-water mixture is further subjected to solid-liquid separation in the filter bag filter 61, the separated solid sludge is retained in the filter bag so as to be cleaned regularly, sedimentation and scaling are cleaned timely on line, and the separated wastewater is discharged through a water outlet of the filter bag filter 61.

Preferably, as shown in fig. 1, in one embodiment, the filtering apparatus 60 further comprises a pipe pump 64, the pipe pump 64 being disposed at a portion of the main blowdown pipe 62 between the filter bag filter 61 and the branch blowdown pipe 63. The pipe pump 64 can pressurize the main blowdown pipe 62 and the branch blowdown pipe 63 so that the mud-water mixture can flow into the filter bag filter 61.

Preferably, as shown in fig. 1, in one embodiment, the filtering device 60 further comprises a turbidity meter and an electrically operated valve 65, the turbidity meter being electrically connected to the piping pump 64 and the electrically operated valve 65, the turbidity meter and the electrically operated valve 65 being provided to the drain branch piping 63. The turbidity meter is used for monitoring the turbidity of the mud water mixture, and when the set turbidity upper limit value is reached, the electric valve 65 is opened, and the starting of the pipeline pump 64 is controlled to enable the mud water mixture to enter the filter bag filter 61; when the set turbidity lower limit is reached, the pipeline pump 64 is controlled to stop, and the electric valve 65 is closed at the same time, so that the mud-water mixture is automatically treated, the labor force is saved, the overall cost reduction and efficiency improvement are realized, and the scaling weight gain of the cathode is greatly slowed down.

Preferably, as shown in fig. 1, in one embodiment, the stepped reaction device has a return water inlet opening at the first reaction module 10 of the stepped reaction device, and the filtering device 60 includes a return pipe 66, and the return pipe 66 communicates with the water outlet of the filter bag filter 61 and the return water inlet. So configured, the wastewater of the mud-water mixture separated by the filter device 60 can be returned to the reaction module 10 for electrocatalytic oxidation reaction to further treat the wastewater.

Further, as shown in fig. 1 and 5, in one embodiment, the sewage treatment apparatus further includes a plurality of aeration stirring devices (not shown) provided in the reaction modules 10 of the pH callback tank 40 and the step reaction device, respectively, and an aeration pipe 70 communicating with the aeration stirring devices. The aeration stirring device can stir the pH callback tank 40 to enable the sewage in the pH callback tank 40 to fully react with acid so as to neutralize the pH value of the sewage. The aeration stirring device can stir the sewage in the reaction module 10 to fully perform oxidation reaction on the sewage in the reaction module 10.

Preferably, as shown in FIG. 1, in one embodiment, the wastewater treatment facility further includes a plurality of service valves 80, the service valves 80 being positionable on the modular piping 20 and the main sewer piping 62 for subsequent service.

It is noted that the module pipes 20, the connecting pipe 50, the exhaust gas collecting pipe 30, the outlet pipe, the main blowdown pipe 62, the main blowdown pipe 63 and the aeration pipe 70 may be made of an insulating and corrosion-resistant plastic material, preferably pp plastic material.

Optionally, as shown in fig. 1, in one embodiment, the sewage treatment apparatus may further include a base frame 90, where the pH callback tank 40, the step reaction device and the filtering device 60 are fixedly disposed on the base frame 90 to form an integrated apparatus platform, and the base frame 90 may be made of a metal pressure-bearing material, so as to facilitate grounding treatment and prevent leakage of the sewage treatment apparatus.

The sewage treatment equipment provided by the application and the traditional tank type electrocatalytic oxidation reaction device are respectively used for treating electroplating complex wastewater under the same working condition for comparison test.

The relevant parameters of the wastewater used in the comparative test are as follows: the alkaline pH of the wastewater is more than 10, and the conductivity is about 20 ms/cm.

The sewage treatment equipment guides the wastewater into the pH callback tank, and under the condition of adding acid to adjust the pH to 6-7, the wastewater carries out electrocatalytic oxidation reaction through 3 groups of stepped reaction devices of the reaction modules which are connected with each other through pipelines. The reaction time period of the wastewater passing through the stepped reaction device is 2 hours, the current densities of the three reaction modules 70A/m2, 80A/m2 and 90A/m2 are sequentially given, the conductivity value in the device shows a trend of rapid reduction according to the feedback data of the conductivity meter, and the conductivity value is sequentially as follows: 19ms/cm, 17.4ms/cm, 15.6ms/cm. The sewage treatment equipment is used for treating 1 ton of water by monitoring the electric meter and the inflow water flow, and the power consumption is about 10Kwh to 12Kwh. Under the same water inlet working condition and the condition of meeting the pretreatment effect, the electric conductivity of the wastewater is reduced from about 20ms/cm to about 17ms/cm by a groove type electrocatalytic oxidation reaction device with the reaction period of 2 hours, and the power consumption for treating 1 ton of water is about 15Kwh to 16Kwh, and compared with the energy consumption of the sewage treatment equipment, the energy consumption is increased by 20% -37.5%. Therefore, the sewage treatment equipment has the effects of reducing energy consumption and improving the service efficiency of the power supply.

The sewage treatment equipment monitors in real time through the turbidity meter on the sewage discharge branch pipeline, when the monitoring value is more than 500mg/L, the pipeline pump is used for pumping and sucking the mud-water mixture, the filter bag filter is used for filtering particulate matters, when the monitoring value of the turbidity meter is less than 200mg/L, the pipeline pump is used for stopping pumping and sucking the mud-water mixture, and meanwhile, pollutants in the filter bag filter are cleaned every day. The cathode barrel in the reaction module is increased by 5-10% after one year, the period for cleaning dirt of the cathode barrel is greatly prolonged, and the cathode barrel can be directly cleaned after the anode cover is sequentially lifted and detached, so that the operation is simple and convenient. Compared with a tank type electrocatalytic oxidation reaction device, the sewage outlet is used for periodically discharging sewage every day, the turbidity detection value of the sewage outlet is continuously more than 500mg/L after three months, the weight of the cathode plate is increased by 15% -20% after one year, and the accumulated sludge at the bottom of the tank body needs to be cleaned in time and the cathode plate needs to be maintained and cleaned. Therefore, the sewage treatment equipment automatically cleans pollutant particles by monitoring turbidity, reduces the cleaning frequency of a cathode barrel, reduces the energy consumption waste of a power supply, reduces the cleaning period of bottom sludge, and reduces the labor investment.

In the range of 500mm of the anode cover of the sewage treatment equipment, the concentration of hydrogen is monitored by a hydrogen detector to be within 0.1 percent, and the content of carbon monoxide is monitored by a carbon monoxide detector to be within 5 ppm. In the anode 500mm range of the groove type electrocatalytic oxidation reaction device, the hydrogen concentration is 1.1% -1.5% by monitoring through a hydrogen detector, the carbon monoxide content is 80 ppm-120 ppm by monitoring through a carbon monoxide detector, and the hydrogen concentration and the carbon monoxide concentration in the anode range are in explosion limit points of hydrogen (17% -56%) and carbon monoxide (12.5% -74.2%). Therefore, the gas leakage rate of the sewage treatment equipment is far smaller than that of the groove type electrocatalytic oxidation reaction device, and the problem of waste gas overflow can be solved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (18)

1. A reaction module for treating wastewater, comprising:

the anode cover comprises a cover body with a waste gas port and a plurality of anode plates fixedly arranged on the anode cover;

The cathode barrel comprises a barrel body for containing the sewage and a plurality of cathode plates fixedly arranged on the barrel body, the barrel body is provided with a reaction water inlet, a reaction water outlet arranged below the reaction water inlet and a drain outlet arranged below the reaction water outlet, and the anode cover is covered on the cathode barrel so as to insert the anode plates between the cathode plates to form staggered arrangement of the cathode plates and the anode plates;

the insulating spacer tube is fixedly arranged between the cathode barrel and the anode cover; and

And the electrodes of the power supply are respectively connected with the cathode barrel and the anode cover.

2. The reaction module of claim 1, wherein the barrel comprises a vertical pipe and a mud water collecting bucket fixedly connected to one end of the vertical pipe far away from the insulating spacer pipe, the reaction water inlet is formed in the upper end of the vertical pipe, the reaction water outlet is formed in the lower end of the vertical pipe, the mud water collecting bucket is of an inverted conical structure, and the sewage drain is formed in the bottom of the mud water collecting bucket.

3. The reaction module of claim 2 wherein the cathode plates are disposed in parallel within the riser and the anode plates are affixed in parallel to the cover.

4. A reaction module according to claim 3 wherein the spacing between the cathode plates is the same and the spacing between the anode plates is the same.

5. A reaction module according to claim 3 wherein the height of the anode plate is less than the sum of the height of the riser and the height of the insulating spacer.

6. A reaction module according to claim 3 wherein the end of the cathode plate adjacent the insulating spacer tube is flush with the end of the riser adjacent the insulating spacer tube.

7. The reaction module of any one of claims 1 to 6 wherein the anode cap further comprises insulating blocks secured to both sides of the anode plate.

8. The reaction module of any one of claims 1 to 6 wherein the anode plate and the cathode plate are provided with a plurality of flow-through apertures.

9. The reaction module of any one of claims 1 to 6 further comprising an insulating plate, wherein the cathode barrel is secured to the insulating plate.

10. The reaction module of any one of claims 1 to 6 further comprising a plurality of conductive fixing plates fixedly disposed at the outer side of the anode cap and the outer side of the cathode tub, respectively, and connection copper bars connected to the conductive fixing plates and the electrodes of the power source, respectively.

11. A stepwise reaction apparatus, comprising:

A plurality of reaction modules according to any one of claims 1 to 10, which are arranged in sequence;

The reaction modules are sequentially communicated by the module pipelines, one end of each module pipeline is communicated with a reaction water outlet of the previous reaction module, and the other end of each module pipeline is communicated with a reaction water inlet of the next reaction module;

The conductivity probe is arranged on the module pipeline, the reaction water inlet of the reaction module and the reaction water outlet of the reaction module;

The waste gas collecting pipelines are communicated with waste gas ports of the reaction modules; and

And the water outlet pipeline is communicated with the reaction water outlet of the last reaction module.

12. A sewage treatment apparatus, comprising:

The pH callback tank is provided with an acid adding port and a callback water outlet;

the stepwise reaction device of claim 11; and

A connecting pipe; the connecting pipeline is communicated with the pH callback pool and the reaction water inlet of the first reaction module of the stepped reaction device.

13. The wastewater treatment plant of claim 12, wherein a pH detection assembly and a conductivity detection assembly are disposed within the connecting conduit.

14. The wastewater treatment apparatus of claim 12, further comprising a filter device comprising a filter bag filter, a main blowdown pipe and a plurality of main blowdown pipes in communication with the main blowdown pipe, the main blowdown pipes being in communication with the respective drain outlets of the respective reaction modules of the stepped reaction device, the main blowdown pipe being in communication with the water inlet of the filter bag filter.

15. The wastewater treatment plant of claim 14, wherein the filtering means further comprises a conduit pump disposed in a portion of the main blowdown conduit between the filter bag filter and the main blowdown conduit.

16. The wastewater treatment facility of claim 15, wherein the filtration device further comprises a turbidity meter and an electrically operated valve, the turbidity meter being electrically connected to the piping pump and the electrically operated valve, the turbidity meter and the electrically operated valve being disposed in the wastewater piping branch.

17. The wastewater treatment facility of claim 14, wherein the stepped reaction device has a backflow water inlet opening into a first reaction module of the stepped reaction device, and wherein the filtration device comprises a backflow conduit that communicates with the water outlet of the filter bag filter and the backflow water inlet.

18. The wastewater treatment apparatus of claim 14, further comprising a plurality of aeration stirring devices and an aeration pipe, wherein the aeration stirring devices are disposed in the reaction modules of the pH callback tank and the step reaction device, respectively, and the aeration pipe is communicated with the aeration stirring devices.