An artificial wetland device based on intelligent control

Abstract

The present invention relates to an artificial wetland device based on intelligent control and applied in the field of sewage treatment. The device realizes analysis of purification target pollutants and their effects of different medium layers through unit analysis operation. When treating sewage, the content of pollutant components that account for too much in the sewage to be treated is compared with the main purification target of the medium layer, the target medium layer is confirmed, and then the choke coil is laid on the lower side of the target medium layer to locally block the sewage on its upper side, so that part of the sewage flows horizontally in the target medium layer, prolonging the residence time of the sewage inside, achieving full purification of the target pollutants and improving the purification effect. At the same time, the setting of the choke coil also provides a special flushing and anti-blocking method for the medium layer, so that a single medium layer can be flushed in turn from top to bottom, and the flushing wastewater can be effectively prevented from passing through the lower medium layer, thereby reducing the probability of impurities blocking again, and ensuring the recycling rate and purification effect of the present application.

Description

Technical Field

[0001] The present invention relates to an artificial wetland device, and in particular to an artificial wetland device based on intelligent control and applied in the field of sewage treatment. Background Art

[0002] Constructed wetland system refers to wetlands formed by human factors. It is a technology that mainly uses the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms to treat sewage and sludge. The core technology of artificial wetlands is subsurface flow wetlands. In the vertical subsurface flow system, sewage flows vertically from the surface to the bottom of the bed. During the vertical flow process, sewage passes through different media layers in turn to achieve the purpose of purification. The vertical subsurface flow wetland has a complete water distribution system and water collection system.

[0003] The specification of Chinese patent CN106242070B discloses an automated sewage treatment system based on artificial wetlands and a control method thereof, comprising wetland plants and a drawer-type sealed wetland box with a variety of filter matrices laid inside. Large pieces of bluestone, small gravel, fine sand, modified zeolite, nanocomposite materials, and soil layers are placed on multiple drawer layers from bottom to top. The functions of a controller, a detector, an alarm sensor, and a purity detector are adopted, which increases the intelligent automation of the sewage treatment system. When the filter matrix needs to be replaced, an alarm signal will be received, and there is no need for manual regular inspection, which saves labor costs, reduces the workload of workers, and improves work efficiency.

[0004] The specification of Chinese patent CN110316833B discloses a multi-level backwashing anti-clogging artificial wetland system, including: an outer pool, a barrier net, multiple sub-wetland systems, a water-retaining wall, a secondary interception net, multiple mud outlets, multiple filter layers, a supporting layer, a volcanic stone layer, a fine sand layer, a lightweight filler layer, and an organic layer; it can be flushed in layers according to the blockage situation of the wetland, and its water outlet is arranged in an inclined structure so that the sprayed water forms a vortex shape. Compared with the direct current flushing method, it can effectively remove pollutants blocked on the filter layer, and achieve a water-saving, fast and efficient backwashing effect.

[0005] Existing artificial wetlands are generally composed of different media layers distributed up and down, and each layer of media has different purification effects for treating different pollutants in sewage. However, in actual situations, the pollutant components and contents contained in different types of sewage are quite different. It is difficult for existing wetlands to intelligently control the treatment time of different media layers for sewage when treating different sewage, which makes it easy for certain pollutants in the effluent to fail to meet the standards. In addition, in the process of anti-blocking flushing of the wetland, most of the impurities are flushed to the bottom of the wetland for unified collection, which can easily cause the impurities in the upper medium layer to be blocked again in the next medium layer, resulting in the defect of difficulty in flushing. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that it is difficult for existing artificial wetlands to carry out targeted treatment operations on different types of sewage according to the different pollutant components and contents, and in the process of cleaning impurities in the wetland, it is easy for impurities in the upper medium layer to be blocked again in the next medium layer.

[0007] To solve the above problems, the present invention provides an artificial wetland device based on intelligent control, including a wetland body, the wetland body including a plant layer, a plurality of medium layers and a water collection layer distributed in sequence from top to bottom, a water supply pipe fixedly installed on the plant layer, a water collection pipe communicating with the interior thereof fixedly installed on the water collection layer, a spacing mesh layer fixedly connected between adjacent medium layers and between the lowest medium layer and the water collection layer, a main side frame and a secondary side frame fixedly connected at the left and right ends of the wetland body respectively, an upper reel and a lower reel are arranged inside the main side frame, one end of a choke roll is fixedly connected to the outer end of the upper reel, the other end of the choke roll is S-shaped and moves in turn through the inner side of the spacing mesh layer until it is fixedly connected to the outer end of the lower reel, a pair of protective covers with motors installed therein are fixedly connected to the outer ends of the main side frames, and the output ends of the pair of motors move in turn through the protective covers and the secondary side frames and are fixedly connected to the upper reel and the lower reel respectively;

[0008] One side end of the water collection layer is provided with a water guide hole one communicating with the inner side of the secondary side frame, and the other side end is provided with a water guide hole two communicating with the inner side of the main side frame. The side end of the artificial wetland is also fixedly connected with an inflation component for inflating and exhausting the interior of the spacer net layer.

[0009] As a further supplement to the present application, the spacer mesh layer includes a pair of mesh plates, a pair of parallel hard plates are fixedly connected between the pair of mesh plates, a pair of parallel air bags are fixedly connected between the pair of hard plates, and the hard plates and the air bags form a U-shaped structure.

[0010] As a further supplement to the present application, the lower end of the airbag is fixedly connected to the lower mesh plate, and the flow-blocking roll moves through the airbag and the upper mesh plate. When the airbag is not inflated, there is a gap between it and the upper mesh plate, and the spacing mesh layer is in an open state. When the airbag is inflated, it and the mesh plate clamp the flow-blocking roll between the two, and the spacing mesh layer is in a closed state all around.

[0011] As a further supplement to the present application, the inflation assembly includes an air duct and multiple branch pipes with electrically controlled valves. The multiple branch pipes correspond one-to-one to the multiple spacing mesh layers, and the branch pipes are fixedly connected to one of the hard plates. One end of the branch pipe away from the spacing mesh layer is fixedly connected to the air duct.

[0012] As a further supplement to the present application, a cavity is provided inside the hard plate fixedly connected to the branch pipe, the branch pipe passes through the hard plate and communicates with the cavity, a pair of through holes is provided on the inner wall of the cavity, and the pair of cavities are respectively communicated with a pair of airbags.

[0013] As a further supplement to the present application, the flow-blocking roll includes a main water-permeable net, a water-blocking belt and a secondary water-permeable net, and the water-blocking belt is fixedly connected between the main water-permeable net and the secondary water-permeable net. The water-blocking belt is made of waterproof flexible material, and the main water-permeable net and the secondary water-permeable net are both mesh structures made of flexible materials.

[0014] As a further supplement to the present application, one end of the main water-permeable net away from the water-blocking tape is fixedly connected to the lower reel, and one end of the secondary water-permeable net away from the water-blocking tape is fixedly connected to the upper reel. In the initial state, the secondary water-permeable net is wound around the outer end of the upper reel, and the water-blocking tape is wound around the outer end of the secondary water-permeable net. The main water-permeable net is S-shaped and laid in sequence on the inner side of multiple spacing net layers.

[0015] As a further supplement to the present application, the upper reel is located on the upper side of the uppermost spacer mesh layer, and the lower reel is located on the lower side of the lowermost spacer mesh layer.

[0016] An artificial wetland device based on intelligent control, the use method of which comprises the following steps:

[0017] S1. Assume that the number of medium layers is M, and the number of spacing net layers is also M. Before the wetland is officially put into operation, perform unit analysis:

[0018] S1.1. Keep all airbags in an uninflated state, start the motor in the protective cover, make the upper reel and the lower reel rotate synchronously, unwind the flow-blocking reel at the outer end of the upper reel, until the water-blocking tape is completely located in the spacing mesh layer between the Nth and N+1th dielectric layers, isolate the two dielectric layers, and turn off the motor, where N is a positive integer;

[0019] S1.2, keep the airbag between the Nth and N+1th medium layers in an uninflated state, and inflate the remaining airbags, so that the spacing mesh layer between the Nth and N+1th medium layers is in an open state, and the remaining spacing mesh layers are in a sealed state;

[0020] S1.3. Input sewage into the plant layer, and the sewage flows downward to be purified by the medium layer. When it flows to the Nth medium layer, the sewage is blocked by the blocking belt and has difficulty flowing into the N+1th medium layer. At this time, the sewage directly enters one of the main side frame or the secondary side frame through the open spacer mesh layer, and finally directly enters the water collection layer. Then the water quality of the effluent discharged from the water collection layer is tested;

[0021] S2, repeating step S1, so that the water blocking tape stays in each spacing mesh layer from top to bottom, thereby obtaining M groups of sewage detection data, and judging the purification target of each medium layer by comparing the M groups of data and the position where the water blocking tape stays;

[0022] S3. Intelligent regulation based on the composition and content of sewage pollutants:

[0023] When the content of one or more pollutants in the sewage to be treated is too high, the above pollutants are recorded as target pollutants, the target pollutants are compared with the purification target information of each medium layer in step S2, and the medium layer whose purification target information matches the target pollutant is recorded as the target medium layer;

[0024] Before treating sewage, start the motor to drive the upper and lower reels to rotate, so that the choke reel on the upper reel unwinds and moves a local area of ​​the water-blocking tape to the spacing mesh layer between the target medium layer and the medium layer below it, thereby performing local choke on a pair of medium layers, extending the residence time of sewage in the target medium layer and improving the purification effect on the target pollutants.

[0025] An artificial wetland device based on intelligent control, the use method of which also includes the following unit cleaning operations:

[0026] W1, perform steps S1.1 and S1.2;

[0027] W2. Input clean water into the plant layer, and the clean water flows downward to wash away the impurities in the medium layer. When the wastewater mixed with impurities reaches the Nth medium layer, it is blocked by the water blocking belt. At this time, the wastewater directly enters one of the main side frame or the secondary side frame through the open spacer mesh layer, and finally directly enters the water collection layer and then is discharged and collected;

[0028] W3. Repeat steps W1 and W2 to allow the water-blocking tape to stay in each spacing mesh layer from top to bottom, so as to flush each medium layer separately from top to bottom and collect impurities separately, so that impurities in the upper medium layer are not easy to pass through the lower medium layer, thereby reducing the probability of secondary blockage by impurities and improving the cleaning effect.

[0029] In summary, the present application realizes the analysis of the purification target pollutants and their effects of different medium layers through unit analysis operation, obtains the main purification target of each medium layer, and when treating sewage, compares the content of pollutant components that account for too much in the sewage to be treated with the main purification target of the medium layer, selects the target medium layer, and then lays the choke roll on the lower side of the target medium layer, and locally blocks the sewage on its upper side, so that part of the sewage flows horizontally in the target medium layer, prolongs the residence time of the sewage inside it, and achieves full purification of the target pollutants, thereby improving the purification effect and making the effluent water quality meet the standards. At the same time, the setting of the choke roll also provides a special flushing and anti-blocking method for the medium layer, which can realize the flushing of a single medium layer from top to bottom in turn, and make the water mixed with impurities directly enter the main side frame or the auxiliary side frame at the side end for collection, effectively avoiding the process of impurities passing through the lower medium layer, thereby reducing the probability of impurities blocking again, reducing the difficulty of flushing, and thus ensuring the recycling rate and purification effect of the wetland body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The three-dimensional embodiment of the first and second embodiments of this application Figure 1 ;

[0031] Figure 2 The local three-dimensional explosion of the first and second embodiments of this application Figure 1 ;

[0032] Figure 3 The local three-dimensional explosion of the first and second embodiments of this application Figure 2 ;

[0033] Figure 4 It is a schematic diagram of the partial top surface structure of the choke roll in the first and second embodiments of the present application;

[0034] Figure 5 It is a three-dimensional exploded view of the spacer mesh layer of the first and second embodiments of the present application;

[0035] Figure 6 It is a schematic diagram of the top surface structure of the spacer mesh layer in the first and second embodiments of the present application;

[0036] Figure 7 It is a three-dimensional diagram of the dielectric layer of the first and second embodiments of the present application;

[0037] Figure 8 This is a schematic diagram of the side structure when normal sewage purification is performed in the first and second embodiments of the present application;

[0038] Fig. 9 for Figure 8 The structural diagram at A in the middle;

[0039] Fig.10 This is a schematic diagram of the side structure when performing unit analysis operation or unit cleaning operation in the first and second embodiments of the present application. Figure 1 ;

[0040] Fig.11 for Fig.10 The structural diagram at B in the middle;

[0041] Fig.12 This is a schematic diagram of the side structure when performing unit analysis operation or unit cleaning operation in the first and second embodiments of the present application. Figure 2 ;

[0042] Fig.13 This is a schematic diagram of the side structure when intelligent control is performed in the first and second implementation modes of the present application;

[0043] Fig.14 This is a schematic diagram of the side structure during normal sewage purification in the third embodiment of the present application.

[0044] Description of the numbers in the figure:

[0045] 1 plant layer, 2 medium layer, 201 outer frame, 202 filler, 3 water collection layer, 301 water guide hole 1, 302 water guide hole 2, 4 main side frame, 5 secondary side frame, 6 upper reel, 7 lower reel, 8 flow blocking reel, 81 main water-permeable net, 82 water-blocking tape, 83 secondary water-permeable net, 9 interval net layer, 91 net plate, 92 hard plate, 9201 cavity, 9202 through hole, 93 air bag, 10 protective cover, 11 water supply pipe, 12 water collection pipe, 13 air guide pipe, 14 branch pipe, 15 oil cylinder, 16 side sealing plate. DETAILED DESCRIPTION

[0046] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0047] The first implementation method:

[0048] The present invention provides an artificial wetland device based on intelligent control. Figure 1 , including a wetland body, which includes a plant layer 1, multiple medium layers 2 and a water collection layer 3 distributed from top to bottom. The number and material of the medium layers 2 can be selected according to actual conditions, such as: 4 different medium layers 2 can be used, from top to bottom: a crushed stone layer, a pebble layer, a modified zeolite layer, and a gravel layer. The particle size of each medium layer 2 can be specifically set according to purification needs. A water supply pipe 11 is fixedly installed on the plant layer 1, and a water collection pipe 12 connected to the inside thereof is fixedly installed on the water collection layer 3. Sewage enters the wetland body through the water supply pipe 11, flows into the water collection layer 3 after being purified by multiple medium layers 2 in turn, and is then discharged and collected through the water collection pipe 12. This is the purification principle of the existing vertical flow submerged flow wetland.

[0049] Please refer to Figure 1 and Figure 2 As shown, between adjacent dielectric layers 2 and between the lowermost dielectric layer 2 and the water collection layer 3, there are fixedly connected spacer mesh layers 9. At the left and right ends of the wetland body, there are fixedly connected a main side frame 4 and a secondary side frame 5 respectively. Inside the main side frame 4, there are an upper scroll 6 and a lower scroll 7. One end of a flow-blocking roll 8 is fixedly connected to the outer end of the upper scroll 6. The other end of the flow-blocking roll 8 is S-shaped and sequentially passes through the inside of the spacer mesh layer 9 until it is fixedly connected to the outer end of the lower scroll 7. At the outer end of the main side frame 4, there are fixedly connected a pair of protective covers 10 with motors installed inside. The output ends of the pair of motors sequentially pass through the protective covers 10 and the secondary side frame 5 and are respectively fixedly connected to the upper scroll 6 and the lower scroll 7. The spacer mesh layer 9 separates adjacent dielectric layers 2 and between the dielectric layer 2 and the water collection layer 3, and facilitates the S-shaped laying of the flow-blocking roll 8 between adjacent dielectric layers 2.

[0050] Please refer to Figure 3 and Figure 5 As shown, the spacer mesh layer 9 includes a pair of mesh plates 91. The upper mesh plate 91 is fixedly connected to the upper dielectric layer 2, and the lower mesh plate 91 is fixedly connected to the lower dielectric layer 2 or the water collection layer 3. And the mesh plate 91 does not affect the downward flow of sewage, that is, it does not affect the normal sewage purification process. Between the pair of mesh plates 91, there are fixedly connected a pair of hard plates 92 arranged in parallel. Between the pair of hard plates 92, there are fixedly connected a pair of air bags 93 arranged in parallel. The pair of air bags 93 are respectively located inside the main side frame 4 and the secondary side frame 5. The hard plates 92 and the air bags 93 form a hollow structure in the shape of a Chinese character 'hui', which also does not affect the downward flow of sewage. The lower end of the air bag 93 is fixedly connected to the lower mesh plate 91. When the air bag 93 is not inflated, there is a gap between its upper end and the upper mesh plate 91 (as shown in combination with Fig.10 and Fig.11 ). At this time, the spacer mesh layer 9 is in an open state. The above gap allows sewage to flow horizontally into the main side frame 4 or the secondary side frame 5. The flow-blocking roll 8 passes through the space between the air bag 93 and the upper mesh plate 91. When the air bag 93 is inflated and expands, it clamps the flow-blocking roll 8 between it and the mesh plate 91, and the flow-blocking roll 8 is difficult to move. At this time, the periphery of the spacer mesh layer 9 is in a closed state (as shown in combination with Figure 8 and Fig. 9 ), and sewage flows downward through the spacer mesh layer 9.

[0051] Please refer to Figure 3 , Figure 5 and Figure 6The side end of the artificial wetland is also fixedly connected with an inflation component for inflating and exhausting the inside of the spacer mesh layer 9, the inflation component includes an air guide pipe 13 and a plurality of branch pipes 14 with electric control valves, the plurality of branch pipes 14 correspond to the plurality of spacer mesh layers 9 one by one, and the branch pipes 14 are fixedly connected to one of the hard plates 92, one end of the branch pipe 14 away from the spacer mesh layer 9 is fixedly connected to the air guide pipe 13, the hard plate 92 fixedly connected to the branch pipe 14 is provided with a cavity 9201, the branch pipe 14 passes through the hard plate 92 and communicates with the cavity 9201, and the inner wall of the cavity 9201 is provided with a A pair of through holes 9202 and a pair of cavities 9201 are respectively connected to a pair of airbags 93. When the airbags 93 need to be inflated, gas is input into the airway 13 through an external inflation device, and the gas enters the cavity 9201 through the branch pipe 14, and then enters the pair of airbags 93 through the through holes 9202 at the same time, so as to realize the inflation operation of the airbags 93. Conversely, the gas in the airbags 93 can be extracted through an external vacuum device, and the airbags 93 on the connected spacer mesh layer 9 can be inflated or exhausted by controlling the opening and closing of the electric-controlled valve on the branch pipe 14.

[0052] Combination Figure 7 As shown, the medium layer 2 includes an outer frame 201 and a filler 202 therein. The outer frame 201 has a limiting and enclosing function for the filler 202 and is used for connection with the spacer mesh layer 9, the main side frame 4 and the auxiliary side frame 5.

[0053] See also Figure 4 The flow-blocking roll 8 includes a main water-permeable net 81, a water-blocking belt 82 and a secondary water-permeable net 83, and the water-blocking belt 82 is fixedly connected between the main water-permeable net 81 and the secondary water-permeable net 83. The water-blocking belt 82 is made of impermeable flexible material, which can intercept water and sewage. The horizontal length of the water-blocking belt 82 is slightly larger than the horizontal length of the medium layer 2, and its horizontal width is the same as the width of the filler 202, so that the flow area between adjacent medium layers 2 can be fully blocked. The main water-permeable net 81 and the secondary water-permeable net 83 are both mesh structures made of flexible materials, and sewage can flow downward smoothly through the two. The end of the main water-permeable net 81 away from the water-blocking belt 82 is fixedly connected to the lower reel 7, and the end of the secondary water-permeable net 83 away from the water-blocking belt 82 is fixedly connected to the upper reel 6. The upper reel 6 is located on the upper side of the uppermost spacing net layer 9, and the lower reel 7 is located on the lower side of the lowermost spacing net layer 9.

[0054] In the initial state, if Figure 8 As shown, the secondary water-permeable net 83 is wound around the outer end of the upper reel 6, the water-blocking tape 82 is wound around the outer end of the secondary water-permeable net 83, and the main water-permeable net 81 is S-shaped and laid in sequence on the inner sides of multiple spacer net layers 9. Since the sewage can pass through the main water-permeable net 81 smoothly, and the airbag 93 is in an expanded state, that is, the spacer net layer 9 is in a sealed state all around, the sewage now flows from top to bottom in the wetland body and undergoes a normal purification process.

[0055] An artificial wetland device based on intelligent control, the use method of which comprises the following steps:

[0056] S1. Assume that the number of medium layers 2 is M, and the number of spacer net layers 9 is also M. Before the wetland body is officially put into operation, perform unit analysis operation:

[0057] S1.1. Keep all the airbags 93 in an uninflated state, start the motor in the protective cover 10, make the upper reel 6 and the lower reel 7 rotate synchronously, unwind the flow-blocking reel 8 at the outer end of the upper reel 6, until the water-blocking tape 82 is completely located in the spacing mesh layer 9 between the Nth and N+1th dielectric layers 2, and isolate the two dielectric layers 2, and turn off the motor, where N is a positive integer;

[0058] exist Fig.10 In the embodiment, N is 1. Through the above steps, the water blocking tape 82 stays in the spacer mesh layer 9 between the first and second dielectric layers 2. Fig.12 In the example, N is 2. Through the above steps, the water blocking tape 82 stays in the spacer mesh layer 9 between the second and third dielectric layers 2.

[0059] S1.2, keep the airbag 93 between the Nth and N+1th medium layers 2 in an uninflated state, and inflate the remaining airbags 93, so that the spacing mesh layer 9 between the Nth and N+1th medium layers 2 is in an open state, and the remaining spacing mesh layers 9 are in a sealed state;

[0060] S1.3, sewage is input into the plant layer 1, and the sewage flows downward to be purified by the medium layer 2. When it flows to the Nth medium layer 2, the sewage is blocked by the water blocking belt 82 and is difficult to flow into the N+1th medium layer 2. At this time, the sewage directly enters one of the main side frame 4 or the auxiliary side frame 5 through the open spacer mesh layer 9, and finally directly enters the water collection layer 3. Then, the water quality of the effluent discharged from the water collection layer 3 is tested;

[0061] Specific description: Combined Fig.10As shown, the water blocking belt 82 stays in the spacing mesh layer 9 between the first and second medium layers 2. The sewage purified by the first medium layer 2 is difficult to flow smoothly into the second medium layer 2 due to the obstruction of the water blocking belt 82. At the same time, since the spacing mesh layer 9 where the water blocking belt 82 is located is in an open state, there is an obvious gap between the air bag 93 and the upper mesh plate 91. Therefore, the sewage can flow obliquely along the surface of the water blocking belt 82 until it flows into the secondary side frame 5 through the gap where the lower side of the water blocking belt 82 is located; a water guide hole 301 communicating with the inner side of the secondary side frame 5 is opened at one side end of the water collecting layer 3, and the lower inner wall of the water guide hole 301 is flush with the lower inner wall of the secondary side frame 5. The sewage entering the secondary side frame 5 can flow into the water collecting layer 3 through the water guide hole 301; the water quality of the effluent in the water collecting layer 3 at this time is detected, and the water quality data after only being purified by the first medium layer 2 is obtained;

[0062] Combination Fig.12 As shown, the water blocking belt 82 stays in the spacing mesh layer 9 between the second and third medium layers 2. The sewage purified by the first and second medium layers 2 in turn is blocked by the water blocking belt 82 and is difficult to flow smoothly into the third medium layer 2. At this time, the sewage flows obliquely along the surface of the water blocking belt 82 and flows into the main side frame 4 through the gap on the spacing mesh layer 9. The other side end of the water collection layer 3 is provided with a second water guide hole 302 connected to the inner side of the main side frame 4. The lower inner wall of the second water guide hole 302 is flush with the lower inner wall of the main side frame 4. The sewage entering the main side frame 4 can flow into the water collection layer 3 through the second water guide hole 302. The water quality of the effluent in the water collection layer 3 at this time is detected, and the water quality data after purification by only the first and second medium layers 2 are obtained.

[0063] S2, repeating step S1, so that the water blocking tape 82 stays in each spacing mesh layer 9 from top to bottom, thereby obtaining M groups of sewage detection data, and judging the purification target of each medium layer 2 by comparing the M groups of data and the position where the water blocking tape 82 stays;

[0064] Judgment method: Compare the effluent quality after only the first medium layer 2 purification with the initial sewage quality data, and analyze the changes in the pollutant content in the sewage. If the content of pollutants Q1 and Q2 is significantly reduced, and the content of other pollutants has no significant change, it means that the first medium layer 2 has a significant purification effect on the two substances Q1 and Q2. The purification target of the first medium layer 2 is positioned as pollutants Q1 and Q2;

[0065] Compare the effluent quality after only the first medium layer 2 purification with the water quality data after only the first and second medium layers 2 purification, and analyze the changes in the pollutant content in the sewage. If the content of pollutants Q3 and Q4 is significantly reduced, and the content of other pollutants has no significant change, the purification target of the second medium layer 2 is positioned as pollutants Q1 and Q2;

[0066] By analogy, the purification target of each dielectric layer 2 can be roughly determined (supplemental note: pollutants that are not within the purification target of a certain dielectric layer 2 do not mean that the dielectric layer 2 has no treatment effect on the pollutant, but the treatment effect is relatively weak, so it is not included in the purification target in the setting of this application).

[0067] S3. Intelligent regulation based on the composition and content of sewage pollutants:

[0068] When the content of one or more pollutants in the sewage to be treated is too high, the above pollutants are recorded as target pollutants, and the target pollutants are compared with the purification target information of each medium layer 2 in step S2, and the medium layer 2 whose purification target information matches the target pollutant (i.e., the highest similarity) is recorded as the target medium layer 2;

[0069] Before treating sewage, start the motor to drive the upper reel 6 and the lower reel 7 to rotate, so that the blocking reel 8 on the upper reel 6 unwinds, and move the local area of ​​the water blocking tape 82 to the spacing mesh layer 9 between the target medium layer 2 and the lower medium layer 2, so as to locally block the flow of a pair of medium layers 2, prolong the residence time of sewage in the target medium layer 2, and improve the purification effect of the target pollutants. Fig.13 Step S3 is described by way of example:

[0070] Combination Fig.13 As shown, when the comparison shows that the target pollutant components in the sewage to be treated have the highest similarity with the purification target of the third medium layer 2, in order to fully purify the above-mentioned pollutants, before treatment, the blocking coil 8 is released to move most of the water blocking belt 82 to the lower side of the third medium layer 2. When the sewage flows from top to bottom into the third medium layer 2, part of the sewage is blocked by the water blocking belt 82 and it is difficult to flow directly downward into the fourth medium layer 2. At this time, the blocked sewage flows horizontally in the third medium layer 2 until it flows to a position not blocked by the water blocking belt 82, and then flows to the next medium layer 2, effectively extending the residence time of the sewage in the required medium layer 2, achieving full purification of the target pollutants, and then improving the purification effect, so that the effluent water quality meets the standard (supplementary explanation: since the horizontal length of the water blocking belt 82 is slightly larger than the horizontal length of the medium layer 2, as shown in FIG. Fig.13 As shown, after most of the water-blocking tape 82 is laid on the lower side of the third dielectric layer 2, a small portion of the water-blocking tape 82 will still exist. Preferably, the small excess portion of the water-blocking tape 82 can be laid along the side end of the dielectric layer 2 to the lower side of the next dielectric layer 2. Secondarily, when most of the water-blocking tape 82 has been laid on the lower end of the lowest dielectric layer 2, the small excess portion of the water-blocking tape 82 can be laid on the lower side of the previous dielectric layer 2).

[0071] Second implementation method:

[0072] This embodiment is based on the structural composition of embodiment 1 and also provides the following method of use, namely the following unit cleaning operation:

[0073] W1, perform steps S1.1 and S1.2;

[0074] W2. Clean water is input into the plant layer 1, and the clean water flows downward to wash away the impurities in the medium layer 2. When the wastewater mixed with impurities reaches the Nth medium layer 2, it is blocked by the water blocking belt 82. At this time, the wastewater directly enters one of the main side frame 4 or the auxiliary side frame 5 through the open spacer mesh layer 9, and finally directly enters the water collection layer 3 and then is discharged and collected;

[0075] W3. Repeat steps W1 and W2 to allow the water-blocking tape 82 to stay in each spacing mesh layer 9 from top to bottom, so as to flush each dielectric layer 2 individually from top to bottom, and collect impurities individually, so that impurities in the upper dielectric layer 2 are not easy to pass through the lower dielectric layer 2, thereby reducing the probability of secondary blockage by impurities and improving the cleaning effect.

[0076] The difference from Implementation 1 is that after performing steps S1.1 and S1.2, this implementation adopts the method of passing clean water into the medium layer 2 to flush the impurities inside it (in Implementation 1, sewage is passed into the medium layer 2 for purification). Based on the following problems in the prior art: when cleaning the medium layer 2, the impurities flow downward with the water and need to pass through the interior of the lower multiple medium layers 2 in sequence to reach the bottom of the wetland body for collection. When there are many impurities, as the impurities and water flow, more and more impurities will pass through the lower medium layer 2, and it is easy for the impurities to be blocked again inside the lower medium layer 2. Therefore, the flushing process is difficult. Therefore, in this embodiment, based on the structural composition of embodiment 1, a special flushing and anti-blocking method is also provided. Through the above-mentioned unit cleaning operation, the single medium layer 2 can be flushed from top to bottom in turn, and the impurities and water flow generated by the flushing are blocked and guided by the blocking roll 8, making it difficult for them to move downward to the next medium layer 2. Instead, they enter the main side frame 4 or the auxiliary side frame 5 at the side end along the water blocking belt 82, and then directly flow into the water collection layer 3 for collection, which effectively reduces the probability of impurities clogging again and reduces the difficulty of impurity flushing, thereby ensuring the recycling rate and purification effect of the wetland body.

[0077] The third implementation method:

[0078] See also Fig.14, based on the embodiment 1, this embodiment adds a cylinder 15 and a side sealing plate 16, and the specific configuration is as follows: a side sealing plate 16 is provided in both the main side frame 4 and the auxiliary side frame 5, and the end of the side sealing plate 16 away from the medium layer 2 is fixedly connected to the telescopic ends of multiple cylinders 15, and the fixed end of the cylinder 15 is fixedly connected to the inner wall of the corresponding main side frame 4 or the auxiliary side frame 5, the upper end of the side sealing plate 16 is slightly higher than the upper end of the uppermost spacer mesh layer 9, and the lower end of the side sealing plate 16 is flush with the lower end of the lowermost spacer mesh layer 9, the horizontal width of the side sealing plate 16 is the same as the horizontal width of the airbag 93, and the end of the side sealing plate 16 close to the medium layer 2 is fixedly connected to a rubber sealing pad;

[0079] In the normal state, that is, when the airbag 93 is in good condition, the side sealing plate 16 is not in contact with the medium layer 2. When a certain airbag 93 ruptures and leaks due to long-term use or unexpected circumstances, the upper end of the airbag 93 cannot be sealed and contacted with the upper side mesh plate 91, causing the interval mesh layer 9 to be in an open state. In this way, when treating sewage, the sewage is easy to flow into the main side frame 4 or the auxiliary side frame 5 through the position of the leaking airbag 93, affecting the normal sewage treatment process. Therefore, through the arrangement of the oil cylinder 15 and the side sealing plate 16, before repairing and maintaining the airbag 93, the side sealing plate 16 can be pushed by the oil cylinder 15 to make it fit tightly with the side end of the medium layer 2, and the gaps between all adjacent medium layers 2 are blocked, that is, the airbag 93 is blocked, so that the sewage can flow normally from top to bottom, and it is not easy to enter the main side frame 4 or the auxiliary side frame 5 through the position of the leaking airbag 93, so that the present application can maintain a normal purification effect on sewage when the airbag 93 leaks, further improving the practicality of the present application.

[0080] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An artificial wetland device based on intelligent control, comprising a wetland body, wherein the wetland body comprises a plant layer (1), a plurality of medium layers (2) and a water collection layer (3) arranged in sequence from top to bottom, a water supply pipe (11) being fixedly mounted on the plant layer (1), and a water collection pipe (12) communicating with the interior of the water collection layer (3) being fixedly mounted on the water collection layer (3), characterized in that: A spacing net layer (9) is fixedly connected between adjacent medium layers (2) and between the lowest medium layer (2) and the water collection layer (3); the left and right ends of the wetland body are respectively fixedly connected to a main side frame (4) and a secondary side frame (5); an upper reel (6) and a lower reel (7) are provided inside the main side frame (4); the outer end of the upper reel (6) is fixedly connected to one end of a flow-blocking reel (8); the other end of the flow-blocking reel (8) is movably passed through the inner side of each spacing net layer (9) in sequence until it is fixedly connected to the outer end of the lower reel (7); the outer end of the main side frame (4) is fixedly connected to a pair of protective covers (10) with electric motors installed therein; the output ends of the pair of electric motors are movably passed through the protective covers (10) and the secondary side frame (5) in sequence and are respectively fixedly connected to the upper reel (6) and the lower reel (7); One side end of the water collection layer (3) is provided with a first water guide hole (301) communicating with the inner side of the secondary side frame (5), and the other side end is provided with a second water guide hole (302) communicating with the inner side of the main side frame (4). The side end of the artificial wetland is also fixedly connected with an inflation component for inflating and exhausting air inside the spacer mesh layer (9); The spacer mesh layer (9) comprises a pair of mesh plates (91), a pair of hard plates (92) arranged in parallel are fixedly connected between the pair of mesh plates (91), a pair of air bags (93) arranged in parallel are fixedly connected between the pair of hard plates (92), and the hard plates (92) and the air bags (93) form a U-shaped structure; The flow-blocking roll (8) comprises a main water-permeable net (81), a water-blocking tape (82) and a secondary water-permeable net (83), wherein the water-blocking tape (82) is fixedly connected between the main water-permeable net (81) and the secondary water-permeable net (83), the water-blocking tape (82) is made of a water-impermeable flexible material, and the main water-permeable net (81) and the secondary water-permeable net (83) are both mesh structures made of flexible materials.

2. The artificial wetland device based on intelligent control according to claim 1, characterized in that: The lower end of the airbag (93) is fixedly connected to the lower mesh plate (91), and the flow-blocking roll (8) is movably inserted between the airbag (93) and the upper mesh plate (91). When the airbag (93) is not inflated, there is a gap between it and the upper mesh plate (91), and the spacing mesh layer (9) is in an open state. When the airbag (93) is inflated, it and the mesh plate (91) clamp the flow-blocking roll (8) therebetween, and the spacing mesh layer (9) is in a closed state on all sides.

3. The artificial wetland device based on intelligent control according to claim 1, characterized in that: The inflation component comprises an air guide tube (13) and a plurality of branch tubes (14) with electrically controlled valves, the plurality of branch tubes (14) corresponding one to one with the plurality of spacer mesh layers (9), and the branch tubes (14) are fixedly connected to one of the hard plates (92), and one end of the branch tube (14) away from the spacer mesh layer (9) is fixedly connected to the air guide tube (13).

4. The artificial wetland device based on intelligent control according to claim 3 is characterized in that: A cavity (9201) is provided inside the hard plate (92) fixedly connected to the branch pipe (14); the branch pipe (14) passes through the hard plate (92) and communicates with the cavity (9201); a pair of through holes (9202) are provided on the inner wall of the cavity (9201); the pair of cavities (9201) are respectively communicated with a pair of air bags (93).

5. The artificial wetland device based on intelligent control according to claim 1, characterized in that: One end of the main water-permeable net (81) away from the water-blocking tape (82) is fixedly connected to the lower reel (7), and one end of the secondary water-permeable net (83) away from the water-blocking tape (82) is fixedly connected to the upper reel (6); in an initial state, the secondary water-permeable net (83) is wound around the outer end of the upper reel (6), and the water-blocking tape (82) is wound around the outer end of the secondary water-permeable net (83); and the main water-permeable net (81) is laid in an S-shape in sequence on the inner sides of a plurality of spacer net layers (9).

6. The artificial wetland device based on intelligent control according to claim 1, characterized in that: The upper reel (6) is located on the upper side of the uppermost spacing mesh layer (9), and the lower reel (7) is located on the lower side of the lowermost spacing mesh layer (9).

7. The artificial wetland device based on intelligent control according to claim 1, characterized in that: The method of use includes the following steps: S1. Assume that the number of medium layers (2) is M, and the number of spacing net layers (9) is also M. Before the wetland body is officially put into operation, a unit analysis operation is performed: S1.

1. All airbags (93) are kept in an uninflated state, and the motor in the protective cover (10) is started to rotate the upper reel (6) and the lower reel (7) synchronously, and the flow-blocking reel (8) at the outer end of the upper reel (6) is unwound until the water-blocking tape (82) is completely located in the spacing mesh layer (9) between the Nth and N+1th dielectric layers (2), and the two dielectric layers (2) are flow-blocked and isolated, and the motor is turned off, where N is a positive integer; S1.2, keeping the airbag (93) between the Nth and N+1th medium layers (2) in an uninflated state, and inflating the remaining airbags (93), so that the spacing mesh layer (9) between the Nth and N+1th medium layers (2) is in an open state, and the remaining spacing mesh layers (9) are in a sealed state; S1.

3. Sewage is input into the plant layer (1). The sewage flows downward to be purified by the medium layer (2). When the sewage flows to the Nth medium layer (2), it is blocked by the water blocking belt (82) and is difficult to flow into the N+1th medium layer (2). At this time, the sewage directly enters one of the main side frame (4) or the auxiliary side frame (5) through the open spacer mesh layer (9), and finally directly enters the water collection layer (3). The water quality of the effluent discharged from the water collection layer (3) is then tested. S2, repeating step S1, so that the water blocking tape (82) stays in each spacing mesh layer (9) from top to bottom, thereby obtaining M groups of sewage detection data, and judging the purification target of each medium layer (2) by comparing the M groups of data and the position where the water blocking tape (82) stays; S3. Intelligent regulation based on the composition and content of sewage pollutants: When the content of one or more pollutants in the sewage to be treated is too high, the above pollutants are recorded as target pollutants, the target pollutants are compared with the purification target information of each medium layer (2) in step S2, and the medium layer (2) whose purification target information matches the target pollutant is recorded as the target medium layer (2); Before treating sewage, the motor is started to drive the upper reel (6) and the lower reel (7) to rotate, so that the flow blocking reel (8) on the upper reel (6) unwinds, and a local area of ​​the water blocking tape (82) is moved to the spacing mesh layer (9) between the target medium layer (2) and the lower medium layer (2) thereof, so as to locally block the flow of the pair of medium layers (2), prolong the residence time of the sewage in the target medium layer (2), and improve the purification effect of the target pollutants.

8. The artificial wetland device based on intelligent control according to claim 7, characterized in that: Its usage also includes the following unit cleaning operations: W1, perform steps S1.1 and S1.2; W2. Clean water is input into the plant layer (1). The clean water flows downward to wash away impurities in the medium layer (2). When the wastewater mixed with impurities reaches the Nth medium layer (2), it is blocked by the water blocking belt (82). At this time, the wastewater directly enters one of the main side frame (4) or the auxiliary side frame (5) through the open spacer mesh layer (9), and finally directly enters the water collection layer (3) and is discharged and collected; W3. Repeat steps W1 and W2, so that the water blocking tape (82) stays in each spacing mesh layer (9) from top to bottom, so as to flush each medium layer (2) individually from top to bottom, and collect impurities individually, so that impurities in the upper medium layer (2) are not easy to pass through the lower medium layer (2), thereby reducing the probability of secondary clogging by impurities and improving the cleaning effect.

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