Baffle-flow advancing type electrochemical water treatment equipment and operation method thereof

Abstract

The invention provides baffling advancing type electrochemical water treatment equipment and an operation method thereof, and the equipment comprises a tank body, and a water distribution chamber, a reaction chamber and a drainage chamber which are arranged in the tank body; the water distribution chamber and the drainage chamber are positioned at two ends in the tank body; the reaction chamber is connected between the water distribution chamber and the drainage chamber; a first partition plate with a first water flow opening in the top is arranged between the reaction chamber and the water distribution chamber; a second partition plate with a second water flow opening in the top is arranged between the drainage chamber and the reaction chamber; the reaction chamber is internally provided with a flow guide partition as well as electrolysis partitions and filtering partitions which are alternately arranged in sequence; the diversion partition is communicated with the bottom of the first electrolysis partition; and then any filtering partition receives the wastewater of the previous electrolysis partition through the top and then flows into the next electrolysis partition through the bottom of the filtering partition. Wastewater in the treatment equipment travels in the reaction chamber in a baffling manner and can be electrolyzed by multiple turns of electrolysis partitions in a short distance until the wastewater reaches the standard, so that continuous treatment of the wastewater is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemical water treatment, and particularly to a folded-flow progressive electrochemical water treatment device and an operation method thereof. Background Art

[0002] As an electrochemical oxidation method, boron-doped diamond (BDD) electrolysis for wastewater treatment is a highly potential technology for treating high-concentration / difficult-to-biodegrade organic wastewater, and is particularly suitable for places where conventional biochemical means are difficult to treat. The applicable scope includes: pretreatment of difficult-to-biodegrade organic wastewater, high-salt organic wastewater (+ salt recovery), highly toxic organic wastewater, high-concentration wastewater, high-ammonia-nitrogen wastewater, strong acid-strong base organic wastewater (+ acid-base recovery).

[0003] Currently, in the application of BDD, the BDD material is usually encapsulated in standard modules, and multiple standard electrolysis modules are connected in series to form a BDD treatment device. At the same time, a wastewater storage tank is provided. During wastewater treatment, the wastewater in the wastewater storage tank is pumped to the BDD treatment device for electrolysis and then returned to the wastewater storage tank, and this cycle continues until the wastewater in the wastewater storage tank meets the standards. This method has the following drawbacks: 1. The system is relatively complex. A wastewater circulation system needs to be equipped with a pump to achieve the wastewater treatment effect, which occupies a large area, is troublesome to install, and has high energy consumption; 2. Since gases are generated when BDD works, the presence of these gases will reduce the actual contact area between the wastewater and the BDD electrode plate, thereby resulting in a lower degradation efficiency than that of a single standard electrolysis module. The more standard electrolysis modules are connected in series in the system, the lower the degradation efficiency of the standard electrolysis module near the end due to gas accumulation, and ultimately the overall degradation efficiency is reduced. 3. Each reaction batch is a batch reaction. After each batch reaction is completed, the qualified wastewater needs to be emptied and then new water is introduced. When treating large-volume low-concentration COD wastewater, due to the short reaction time for each batch and the large number of batches per day, the BDD electrocatalytic module has a long idle time and low utilization rate.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the Invention

[0005] The present invention provides a folded-flow progressive electrochemical water treatment device and an operation method thereof, aiming to solve the technical problems mentioned in the above background art part of the prior art electrochemical water treatment device.

[0006] The content of the present invention is as follows:

[0007] In the first aspect of the present invention, a folding progressive electrochemical water treatment device is provided, which includes a tank body, and a water distribution chamber, a reaction chamber and a drainage chamber arranged in the tank body; the water distribution chamber and the drainage chamber are respectively arranged at both ends of the tank body in the length direction; the reaction chamber is connected between the water distribution chamber and the drainage chamber; a first partition is arranged between the reaction chamber and the water distribution chamber, and a first water flow opening is arranged at the top of the first partition; a second partition is arranged between the drainage chamber and the reaction chamber, and a second water flow opening is arranged at the top of the second partition, and an exhaust gas discharge port is arranged on the tank body at the top of the reaction chamber. The reaction chamber includes a flow guiding partition arranged against the first partition, and electrolysis partitions and filtration partitions alternately arranged between the flow guiding partition and the second partition in sequence; the bottom of the flow guiding partition is communicated with the bottom of the first electrolysis partition; for any one of the filtration partitions, the wastewater from the previous electrolysis partition flows into the top of the filtration partition, and then flows into the next electrolysis partition through the bottom of the filtration partition.

[0008] In an optional embodiment of the first aspect of the present invention, the reaction chamber is divided into a first folding progressive chamber section and a second folding progressive chamber section in the width direction by a third partition, and both the first folding progressive chamber section and the second folding progressive chamber section include the flow guiding partition and the alternately arranged electrolysis partitions and filtration partitions.

[0009] In an optional embodiment of the first aspect of the present invention, the flow guiding partition, the electrolysis partitions and the filtration partitions are symmetrically arranged in both the first folding progressive chamber section and the second folding progressive chamber section.

[0010] In an optional embodiment of the first aspect of the present invention, at least one group of BDD electrolysis modules is accommodated in each electrolysis partition; a removable filter bag assembly is arranged in each filtration partition, and the filter bag assembly includes a filter bag fixing substrate, a hanging plate vertically arranged on the filter bag fixing substrate, and at least one filter bag installed on the filter bag fixing substrate.

[0011] In an optional embodiment of the first aspect of the present invention, a mobile hand-operated chain hoist is further arranged on the tank body at the top of the reaction chamber for assisting in taking out the filter bag assembly from the reaction chamber.

[0012] In an optional embodiment of the first aspect of the present invention, the flow guiding partition, the electrolysis partitions and the filtration partitions are separated by a fifth partition and a sixth partition which are vertically offset and spaced in the reaction chamber.

[0013] In an alternative embodiment of the first aspect of the present invention, the BDD electrolysis module includes a flange substrate and anode and cathode plates vertically and spaced apart on the flange substrate; a flange interface is provided on the tank wall of the tank at the position where each electrolysis partition is located, and a module support plate is provided on the fifth partition and the sixth partition in the electrolysis partition corresponding to the flange interface; the flange substrate is installed on the flange interface, and the anode and cathode plates extend into the electrolysis partition and are supported and fixed on the module support plate.

[0014] In an alternative embodiment of the first aspect of the present invention, within the electrolysis partition, the plate surfaces of the anode and cathode plates are both vertically arranged.

[0015] In an alternative embodiment of the first aspect of the present invention, an inlet flange and an inlet chamber drain flange are provided on the tank wall at the bottom of the water distribution chamber, and a perforated horizontal water distribution plate is provided in the height direction within the water distribution chamber; a drain flange and a drain chamber drain flange are provided on the tank wall at the bottom of the drain chamber.

[0016] The second aspect of the present invention provides an operating method for a countercurrent flow electrochemical water treatment device, including:

[0017] Continuously inject wastewater into the water distribution chamber. When the wastewater level in the water distribution chamber exceeds the first water flow opening on the first partition, it flows into the diversion partition of the reaction chamber and then flows to the electrolysis partition and the filtration partition via the diversion partition.

[0018] When the liquid level in the reaction chamber submerges the BDD electrolysis module in each electrolysis partition, electrolysis is started. The gas and heat generated by electrolysis cause the wastewater in the electrolysis partition to flow upward. At the same time, with the continuous input of wastewater promoted by the first water flow opening and the diversion effect of each partition, the wastewater in the reaction chamber advances towards the drain chamber in a countercurrent flow manner.

[0019] When the wastewater has been electrolyzed by the BDD electrolysis module for several rounds, it finally flows into the drain chamber and is discharged after passing the detection and meeting the standards.

[0020] Beneficial effects: The present invention provides a folding-flow electrochemical water treatment device and its operation method. The device includes a tank body, and a water distribution chamber, a reaction chamber, and a drainage chamber arranged in the tank body; the water distribution chamber and the drainage chamber are located at both ends in the tank body; the reaction chamber is connected between the water distribution chamber and the drainage chamber; a first partition with a first water flow opening at the top is arranged between the reaction chamber and the water distribution chamber; a second partition with a second water flow opening at the top is arranged between the drainage chamber and the reaction chamber; the reaction chamber has a diversion partition and electrolysis partitions and filtration partitions alternately arranged in sequence; the diversion partition is connected to the bottom of the first electrolysis partition; any subsequent filtration partition receives the wastewater from the previous electrolysis partition at the top and then flows into the next electrolysis partition through its bottom. In the wastewater treatment device of the present invention, the wastewater travels in the reaction chamber in a folding-flow manner and can be electrolyzed through multiple rounds of electrolysis partitions within a short distance to reach the standard, realizing continuous treatment of wastewater. Description of the Drawings

[0021] Figure 1 It is a schematic cross-sectional structure diagram of a folding-flow electrochemical water treatment device in the length direction from the front view angle of the present invention.

[0022] Figure 2 It is a schematic cross-sectional structure diagram of a folding-flow electrochemical water treatment device in the length direction from the three-dimensional view angle of the present invention.

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the filtration partition in the width direction of a folding-flow electrochemical water treatment device from the front view angle of the present invention.

[0024] Figure 4 It is a schematic cross-sectional structure diagram of the electrolysis partition in the width direction of a folding-flow electrochemical water treatment device from the front view angle of the present invention.

[0025] Figure 5 It is a schematic structure diagram of a filter bag assembly from the top view angle of the present invention.

[0026] Figure 6 It is a schematic external structure diagram of a folding-flow electrochemical water treatment device from the three-dimensional view angle of the present invention.

[0027] The reference numerals are as follows:

[0028] 10 - Tank body; 20 - Water distribution chamber; 30 - Reaction chamber; 40 - Drainage chamber; 50 - First partition; 60 - First water flow opening; 70 - Second partition; 80 - Second water flow opening; 90 - Exhaust gas outlet; 100 - Flow guiding partition; 110 - Electrolysis partition; 120 - Filtration partition; 320 - Third partition; 130 - First zigzag flow inlet section; 140 - Second zigzag flow inlet section; 150 - BDD electrolysis module; 160 - Filter bag assembly; 170 - Filter bag fixing substrate; 180 - Suspension plate; 190 - Filter bag; 200 - Mobile hand chain hoist; 210 - Fifth partition; 220 - Sixth partition; 230 - Flange substrate; 240 - Anode and cathode plates; 250 - Flange interface; 260 - Module support plate; 270 - Inlet flange; 280 - Inlet chamber drain flange; 290 - Horizontal water distribution plate; 300 - Drain flange; 310 - Drainage chamber drain flange. Detailed implementation mode

[0029] To make the objectives, technical solutions and effects of the present invention clearer and more definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] See Figure 1 and Figure 2 As shown in FIGS. and, the first aspect of the present invention provides a zigzag flow-through electrochemical water treatment device, including a tank body 10 (overall rectangular in shape) and a water distribution chamber 20, a reaction chamber 30 and a drainage chamber 40 provided in the tank body 10; the water distribution chamber 20 and the drainage chamber 40 are respectively provided at both ends in the length direction of the tank body 10; the reaction chamber 30 is connected between the water distribution chamber 20 and the drainage chamber 40; a first partition 50 is provided between the reaction chamber 30 and the water distribution chamber 20, and a first water flow opening 60 is provided at the top of the first partition 50, and the first water flow opening 60 is used for the water flow to circulate between the water distribution chamber 20 and the reaction chamber 30; a second partition 70 is provided between the drainage chamber 40 and the reaction chamber 30, and a second water flow opening 80 is provided at the top of the second partition 70, and the second water flow opening 80 is used for the water flow to circulate between the reaction chamber 30 and the drainage chamber 40; an exhaust gas outlet 90 is provided on the tank body 10 at the top of the reaction chamber 30, and an exhaust pipe and a fan can also be connected to the exhaust gas outlet 70 to assist in exhausting the interior of the reaction chamber 30.

[0031] See Figure 1 and Figure 2 As shown in FIGS. and, the reaction chamber 30 includes a flow guiding partition 100 arranged against the first partition 50, and an electrolysis partition 110 and a filtration partition 120 alternately arranged between the flow guiding partition 100 and the second partition 70; in this embodiment, as shown inFigure 1 As shown, the left side of the flow guiding partition 100 and the water distribution chamber 20 share the first partition 50, the right side of the flow guiding partition 100 and the first electrolysis partition 120 share a partition, and the bottom of the flow guiding partition 100 and the first electrolysis partition 120 is connected (that is, the bottom of the partition shared by the flow guiding partition 100 and the first electrolysis partition 120 is open); for any one of the filtration partitions 120, the top of the filtration partition 120 receives the wastewater flowing in from the previous electrolysis partition 110, and then flows into the next electrolysis partition 110 through the bottom of the filtration partition 120. In this embodiment, the specific water flow direction in the reaction chamber is that the wastewater in the flow guiding partition 100 flows into the first electrolysis partition 120 through its bottom for electrolysis, the wastewater after electrolysis in the first electrolysis partition 120 flows to the adjacent filtration partition 120 through its top for filtration, and then flows from the bottom of the filtration partition 120 to the bottom of the next electrolysis partition 120 for the next round of electrolysis, and then the above electrolysis and filtration process is cycled, so that the wastewater gradually meets the standard after multiple rounds of filtration. In the present invention, by way of example, the partition in the reaction chamber 30 that is finally connected to the drainage chamber 40 is the electrolysis partition 120. Of course, in another embodiment of the present invention, the drainage chamber 40 can also be the last filtration partition 120 of the reaction chamber.

[0032] See Figure 2 , in an alternative embodiment of the first aspect of the present invention, the reaction chamber 30 is divided into a first folded flow advancing bin section 130 and a second folded flow advancing bin section 140 in the width direction by a third partition 320. Both the first folded flow advancing bin section 130 and the second folded flow advancing bin section 140 include the flow guiding partition 100 and the electrolysis partitions 110 and the filtration partitions 120 arranged alternately. In this embodiment, the number of electrolysis partitions 110 in the length direction of the reaction chamber 30 of the present invention is doubled, and electrolysis is carried out synchronously on the left and right sides, so that the wastewater flow rate processed on each side is halved, the reaction chamber 30 can be designed shorter, and the overall structure of the equipment can be more compact.

[0033] In an alternative embodiment of the first aspect of the present invention, the flow guiding partition 100, the electrolysis partition 110 and the filtration partition 120 are symmetrically arranged in both the first folded flow advancing bin section 130 and the second folded flow advancing bin section 140. In this embodiment, the bottoms of the first folded flow advancing bin section 130 and the second folded flow advancing bin section 140 can also be connected, so that the COD values of the wastewater at the same length position in the reaction chamber 30 are more uniform, and the working conditions of the electrolysis modules in the flow guiding partitions 100 on both sides are close to each other each time they work, which can extend the service life of the electrolysis modules in the flow guiding partitions 100 and avoid frequent maintenance and replacement.

[0034] See Figure 1 , in an alternative embodiment of the first aspect of the present invention, at least one set of BDD electrolysis modules 150 is accommodated in each of the electrolysis partitions 110. Exemplarily, 2 sets of the BDD electrolysis modules 150 are arranged vertically in each of the electrolysis partitions 110; a removable filter bag assembly 160 is arranged in each of the filtration partitions 120. See Figure 3 and Figure 4 , the filter bag assembly 160 includes a filter bag fixing substrate 170, a hanging plate 180 vertically arranged on the filter bag fixing substrate 170, and at least one filter bag 190 installed on the filter bag fixing substrate 170. Exemplarily, 2 filter bags 190 are arranged side by side left and right on each of the filter bag fixing substrates 170. In this embodiment, placing frames for supporting the filter bag fixing substrate 170 are arranged on the partition plates on both sides in each of the filtration partitions 120. After the filter residue in the filter bags 190 reaches a certain capacity, it can be taken out from the filtration partition 120 for cleaning.

[0035] In an alternative embodiment of the first aspect of the present invention, in order to facilitate the removal and cleaning of the filtration partition 120, see Figure 3 , a mobile chain hoist 200 for assisting the removal of the filter bag assembly 160 from the reaction chamber 30 is further arranged on the trough body 10 at the top of the reaction chamber 30. The mobile chain hoist 200 includes two slide rails, a gantry frame movably mounted on the two slide rails, and a chain hoist arranged on the gantry frame. The two slide rails are respectively aligned with the two edges in the length direction of the trough body 10 at the top of the trough body 10.

[0036] In an alternative embodiment of the first aspect of the present invention, see Figure 1 and Figure 2 , the diversion partition 100, the electrolysis partition 110 and the filtration partition 120 are separated by a fifth partition plate 210 and a sixth partition plate 220 which are vertically offset and spaced in the reaction chamber 30. In the illustrations of Figure 1 and Figure 2 , taking the diversion partition 100, the first electrolysis partition 110 and the first filtration partition 120 as examples, the left side of the diversion partition 100 is the first partition plate 50, and the right side of the diversion partition 100 is the fifth partition plate 210; the left side of the electrolysis partition 110 is the fifth partition plate 210, and the right side of the electrolysis partition 110 is the sixth partition plate 220; the left side of the filtration partition 120 is the sixth partition plate 220, and the right side of the filtration partition 120 is the fifth partition plate 210 on the left side of the next electrolysis partition 110.

[0037] In an alternative embodiment of the first aspect of the present invention, referring to Figure 5 , the BDD electrolysis module 150 includes a flange substrate 230 and an anode and cathode plate 240 (including a BDD anode plate and a cathode plate made of materials such as titanium or stainless steel) vertically and spaced apart on the flange substrate 230; a flange interface 250 is provided on the tank wall of the tank body 10 at the position where each electrolysis partition 110 is located, and a module support plate 260 is provided on the fifth partition plate 210 and the sixth partition plate 220 in the electrolysis partition 110 corresponding to the flange interface 250; the flange substrate 230 is installed on the flange interface 250, and the anode and cathode plate 240 extends into the electrolysis partition 110 and is supported and fixed on the module support plate 260.

[0038] In an alternative embodiment of the present invention, the BDD anode plate of the BDD electrolysis module 150 is a boron-doped diamond and metal matrix composite material, which is composed of a metal matrix and a diamond reinforcement dispersed in the metal matrix. The diamond reinforcement includes, but is not limited to, diamond composite film layer materials; the diamond reinforcement is composed of diamond particles and a diamond surface modification layer, and the diamond surface modification layer is composed of a diamond thin film layer and a diamond transition layer. The diamond transition layer is formed during the process of growing the diamond film layer, and its main component is the carbon-metal bond formed by diamond and the metal substrate, which can enhance the bonding force between the diamond film layer and the metal substrate.

[0039] Specifically, the electrode plate containing diamond reinforcement has the following beneficial effects on the electrode module: with diamond particles as the core, a polycrystalline diamond transition layer is first set on its surface, and then a doped diamond outer shell layer is set. Among them, the high-purity polycrystalline diamond transition layer grows in-situ on single-crystal diamond particles, maintaining the original properties of single-crystal diamond, such as high thermal conductivity, high hardness, high wear resistance, etc. The doped diamond outer shell layer grows in-situ on the polycrystalline diamond transition layer. This structure containing the transition layer can improve the wettability and bonding force between diamond and metal. The electrode module composed of this structure has the characteristics of a long service life and can maintain stable operation under strong water flow impact without the phenomenon of BDD film layer shedding. In addition, in the present invention, a diamond surface modification layer is set on the outer surface of the single-crystal diamond particles, which can also play an isolation and protection role for the diamond particles. At high temperatures, it can protect the diamond from graphitization, oxidation reaction and other chemical reactions; at the same time, it can improve the bonding ability of the diamond. The modification layer plays a bonding bridge role between the two. In addition, it can improve the wettability between the diamond and the matrix metal; and improve the strength of the diamond particles. The coating plays a role in strengthening and toughening, and the surface defects, microcracks and microvoids of the diamond can be compensated by the modification layer, and the strength is improved. In addition, adding a small amount of rare earth elements (the rare earth elements are one or several combinations of lanthanum, cerium, neodymium, europium, gadolinium, dysprosium, holmium, ytterbium, lutetium, yttrium, scandium) to the metal matrix can refine the matrix grains, purify the interface between the diamond and the matrix, promote the reaction between the carbide formation in the matrix and the diamond, improve the bonding between the metal matrix and the diamond, and thus improve the interface bonding state between the matrix and the diamond. The finished structure of the diamond / metal matrix composite material used is not limited, that is, it can be a regular structure or can be made into a special-shaped structure of multiple sizes or special-shaped sizes to meet the requirements of the module.

[0040] In an optional implementation manner of the first aspect of the present invention, within the electrolytic partition 110, the plate surfaces of the anode and cathode plates 240 are both vertically arranged. In this embodiment, the bubbles generated by electrolysis of the anode and cathode plates 240 can smoothly move upward through the gap between the anode and cathode plates 240, avoiding the influence of the bubbles generated by electrolysis on the electrolysis efficiency of the BDD electrolysis module 150. On the other hand, the bubbles generated by electrolysis can also boost the upward movement of the water flow within the electrolytic partition 110 to save the energy consumption required for the water flow movement.

[0041] In an optional implementation manner of the first aspect of the present invention, refer to Figure 1 and Figure 6A water inlet flange 270 and a water inlet chamber drain flange 280 are provided on the groove wall at the bottom of the water distribution chamber 20, and a horizontal water distribution plate 290 with holes is provided in the height direction of the water distribution chamber 20; the horizontal water distribution plate 290 is provided in the water distribution chamber 20 to ensure that the water level of the wastewater overflowing from the top of the water distribution chamber 20 to the reaction chamber is flat, thereby making the water inlet flow stable and avoiding changes in the water inlet load.

[0042] The drain chamber 40 is provided with a drain flange 300 and a drain chamber emptying flange 310 on the bottom wall thereof; and each electrolytic partition 110 is provided with a reaction chamber emptying flange 330 on the bottom wall of the tank. The water inlet chamber emptying flange 280, the drain chamber emptying flange 310, and the reaction chamber emptying flange 330 are used to drain wastewater from the equipment when not in use, preventing internal water accumulation from corroding internal components and the tank, thereby extending the service life of the equipment.

[0043] A second aspect of the present invention provides an operating method of a folded flow electrochemical water treatment device, comprising:

[0044] Continuously injecting wastewater into the water distribution chamber, and after the wastewater level in the water distribution chamber exceeds the first water flow opening on the first partition, flowing into the diversion partition of the reaction chamber, and then flowing to the electrolysis partition and the filtration partition through the diversion partition;

[0045] When the liquid level in the reaction chamber submerges the BDD electrolysis module in each electrolysis partition, electrolysis is started. The gas and heat generated by electrolysis cause the wastewater in the electrolysis partition to flow upward. At the same time, the first water flow opening continuously inputs wastewater, and the diversion function of each partition plate enables the wastewater in the reaction chamber to move toward the drainage chamber in a baffled manner.

[0046] After the wastewater undergoes several rounds of electrolysis in the BDD electrolysis module, it finally flows into the drainage chamber and is discharged after being tested and found to meet the standards.

[0047] In an alternative embodiment of the second aspect of the present invention, the folded-flow progressive electrochemical water treatment device is configured with an autonomous learning control system, which includes a central calculation module, an exponential current output module, a COD on-line detector, and a flow rate monitoring device. The central calculation module is used to analyze the collected data such as COD concentration, current, and flow rate and send control instructions: The central calculation module is built with a calculation model of the relationship between COD degradation and changes in current and flow rate. After each batch of wastewater treatment is completed, the energy consumption of the current batch of treatment is calculated and compared with the lowest energy consumption when the same initial COD concentration is treated to the standard in the database. The current and flow rate parameters are continuously corrected autonomously according to the calculation model to find the corresponding parameters with the lowest energy consumption for operation. The exponential current output module is used to convert the current parameter correction instruction from the central calculation module into the corresponding current and output it to the BDD. The COD on-line detection device is used to detect the change of COD in the wastewater from inlet to outlet in real time. First, the initial COD concentration is sent to the central calculation module, and the central calculation module sends the optimal operation parameters of this COD in the database to the exponential current output module for operation. The flow rate monitoring device is used to monitor the speed of the organic wastewater passing through the BDD material and send the flow rate signal to the central calculation module, so as to calculate the influence of different flow rates on the degradation efficiency of the BDD and obtain the optimal economic flow rate.

[0048] In summary, the present invention provides a folded-flow progressive electrochemical water treatment device and its operation method. The device includes a tank body and a water distribution chamber, a reaction chamber, and a drainage chamber arranged in the tank body; the water distribution chamber and the drainage chamber are located at both ends in the tank body; the reaction chamber is connected between the water distribution chamber and the drainage chamber; a first partition with a first water flow opening at the top is arranged between the reaction chamber and the water distribution chamber; a second partition with a second water flow opening at the top is arranged between the drainage chamber and the reaction chamber; the reaction chamber has a diversion partition and electrolysis partitions and filtration partitions arranged alternately in sequence; the diversion partition is communicated with the bottom of the first electrolysis partition; any subsequent filtration partition receives the wastewater from the previous electrolysis partition at the top and then flows into the next electrolysis partition through its bottom. The wastewater in the treatment device of the present invention travels in the reaction chamber in a folded-flow manner and can be electrolyzed through multiple rounds of electrolysis partitions within a short distance to reach the standard, realizing the continuous treatment of wastewater.

[0049] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A folding progressive electrochemical water treatment device, comprising a tank body, and a water distribution chamber, a reaction chamber and a drainage chamber arranged in the tank body; the water distribution chamber and the drainage chamber are respectively arranged at two ends in the length direction of the tank body; the reaction chamber is connected between the water distribution chamber and the drainage chamber; a first partition is arranged between the reaction chamber and the water distribution chamber, and a first water flow opening is arranged at the top of the first partition; a second partition is arranged between the drainage chamber and the reaction chamber, and a second water flow opening is arranged at the top of the second partition, and an exhaust gas discharge port is arranged on the tank body at the top of the reaction chamber, characterized in that, the reaction chamber includes a diversion partition arranged against the first partition, and electrolysis partitions and filtration partitions alternately arranged between the diversion partition and the second partition in sequence; the bottom of the diversion partition is communicated with the bottom of the first electrolysis partition. For any one of the filtration partitions, the top of the filtration partition receives the wastewater flowing in from the previous electrolysis partition, and then flows into the next electrolysis partition through the bottom of the filtration partition.

2. The folded-flow electrochemical water treatment device according to claim 1, characterized in that, The reaction chamber is divided into a first folding progressive bin section and a second folding progressive bin section in the width direction by a third partition, and both the first folding progressive bin section and the second folding progressive bin section include the diversion partition and the alternately arranged electrolysis partitions and filtration partitions.

3. The folded-flow electrochemical water treatment device according to claim 2, characterized in that, The diversion partition, the electrolysis partitions and the filtration partitions are symmetrically arranged in both the first folding progressive bin section and the second folding progressive bin section.

4. The folded-flow electrochemical water treatment device according to claim 3, wherein Each electrolysis partition accommodates at least one group of BDD electrolysis modules; a removable filter bag assembly is arranged in each filtration partition, and the filter bag assembly includes a filter bag fixing substrate, a suspension plate vertically arranged on the filter bag fixing substrate, and at least one filter bag installed on the filter bag fixing substrate.

5. The flow-through electrochemical water treatment device according to claim 4, characterized in that, A mobile hand chain hoist is further arranged on the tank body at the top of the reaction chamber for assisting in taking out the filter bag assembly from the reaction chamber.

6. The folding progressive electrochemical water treatment device according to claim 2, wherein, The diversion partition, the electrolysis partitions and the filtration partitions are separated by a fifth partition and a sixth partition which are vertically offset and spaced in the reaction chamber.

7. The folded-flow electrochemical water treatment device according to claim 6, wherein, The BDD electrolysis module includes a flange substrate and anode and cathode plates vertically and spacedly arranged on the flange substrate; a flange interface is opened on the tank wall of the tank body at the position where each electrolysis partition is located, and module support plates are arranged on the fifth partition and the sixth partition in the electrolysis partition corresponding to the flange interface; the flange substrate is installed on the flange interface, and the anode and cathode plates extend into the electrolysis partition and are supported and fixed on the module support plates.

8. The folded-flow electrochemical water treatment equipment according to claim 7, wherein, In the electrolysis partition, the plate surfaces of the anode and cathode plates are both vertically arranged.

9. The folded-flow electrochemical water treatment equipment according to claim 1, wherein, An inlet flange port and an inlet chamber emptying flange port are arranged on the tank wall at the bottom of the water distribution chamber; a perforated transverse water distribution plate is arranged in the height direction in the water distribution chamber; a drainage flange port and a drainage chamber emptying flange port are arranged on the tank wall at the bottom of the drainage chamber.

10. A method for operating a folded progressive electrochemical water treatment device, characterized in that, Including: Continuously inject wastewater into the water distribution chamber. After the height of the wastewater in the water distribution chamber exceeds the first water flow opening on the first partition, it flows into the diversion partition of the reaction chamber and then flows towards the electrolysis partition and the filtration partition through the diversion partition. When the liquid level in the reaction chamber submerges the BDD electrolysis module in each electrolysis partition, start electrolysis. The gas and heat generated by electrolysis cause the wastewater in the electrolysis partition to flow upward. At the same time, with the continuous input of wastewater promoted by the first water flow opening and the diversion effect of each partition, the wastewater in the reaction chamber advances towards the drainage chamber in a way of folding flow. When the wastewater has been electrolyzed by the BDD electrolysis module for several rounds, it finally flows into the drainage chamber and is discharged outward after passing the detection and meeting the standards.

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