An assembled integrated sewage treatment equipment for environmental emergency treatment

Abstract

The present invention provides an assembled integrated sewage treatment equipment for environmental emergency treatment applied in the field of sewage treatment, comprising an assembled stepped wetland system, an in-situ filler regeneration system and an ecological filler regeneration system. The wetland system comprises a wetland box, which has a built-in purification mechanism. The purification mechanism comprises an inner box, which has a plurality of parallel and inclined filler columns. The filler columns comprise a columnar lattice shell with built-in filler and flexible spiral blades. The purification mechanism also comprises a side plate. The present application adopts an assembled assembly design, and the various systems can be quickly connected and installed, which greatly shortens the deployment time in emergency scenarios. The filler column design can effectively intercept and filter impurities and pollutants in sewage. The rotating structure of the filler column and the setting of the flexible spiral blades can promote the uniformity of filler film formation and improve treatment efficiency. At the same time, the grid box, aeration box, sedimentation box, etc. work together to realize multi-stage treatment of sewage.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to an assembled integrated sewage treatment equipment for environmental emergency treatment. Background Art

[0002] With the increasing frequency of sudden water pollution incidents caused by industrial accidents, extreme weather events, and other factors, the need for emergency wastewater treatment is becoming increasingly urgent. These incidents often involve a complex array of pollutants, significant fluctuations in water quality, and time-sensitive treatment. This necessitates the deployment of rapid, efficient, stable, and adaptable wastewater treatment equipment. However, in practice, traditional emergency wastewater treatment technologies suffer from complex installation, large footprints, low treatment efficiency, and an inability to flexibly adapt to varying levels of pollution and water quality.

[0003] Constructed wetlands are artificially designed and constructed to mimic natural ecosystems. By controlling water flow paths and utilizing the synergistic effects of physical filtration, chemical precipitation, and biodegradation, they treat wastewater, achieving the dual goals of pollution control and resource reuse. Wastewater treatment for sudden water pollution incidents must balance the dual objectives of rapid emergency response and ecological restoration. On the one hand, it is necessary to quickly interrupt the pollution chain at the early stages of its spread, while on the other hand, it is necessary to avoid the secondary ecological damage that traditional chemical-dependent treatment technologies may cause. Constructed wetland technology, due to its low carbon footprint, low energy consumption, and strong biocompatibility, is considered an ideal choice for emergency wastewater treatment.

[0004] Although artificial wetland technology has the advantages of low energy consumption and strong ecological compatibility, its construction relies on complex civil engineering projects with a construction period of several months. In addition, it is subject to site conditions and climatic factors. It takes several months for the biofilm to mature, which cannot meet the immediate requirements of emergency disposal. In addition, the single structural design of traditional artificial wetlands has insufficient redundant processing capacity when facing water quality fluctuations, and is prone to problems such as filler clogging and low film hanging efficiency. To this end, the present invention provides an assembled integrated sewage treatment equipment for environmental emergency treatment. Through the deep integration of assembled integrated design and enhanced artificial wetland functions, an integrated solution of "rapid response-efficient treatment-ecological output" is constructed to provide technical support for the green emergency disposal of sudden water pollution incidents. Summary of the Invention

[0005] The purpose of the present application is to solve the technical problems that the existing sewage treatment devices are prone to clogging due to filler accumulation and low film forming efficiency. Compared with the existing technology, the present application provides an assembled integrated sewage treatment equipment for environmental emergency treatment, including an assembled stepped wetland system, an in-situ filler regeneration system and an ecological filler regeneration system. The wetland system includes a wetland box, the wetland box is equipped with a purification mechanism, the purification mechanism includes an inner box, the inner box is provided with a plurality of parallel and inclined filler columns, the filler columns include a columnar lattice shell, the columnar lattice shell has filler built in, the two ends of the columnar lattice shell are respectively fixed with an upper rotating seat and a lower rotating seat, the sides of the adjacent upper rotating seats are tangently arranged, and two groups of symmetrically arranged sealing side rods are fixed between the upper rotating seat and the lower rotating seat, the side of the two groups of sealing side rods away from each other is arc-shaped and coaxial with the axis of the lower rotating seat, the circular ring radius of the sealing side rod is equal to the radius of the lower rotating seat, and the arrangement spacing of the filler columns is equal to the diameter of the lower rotating seat;

[0006] A shaft is rotatably connected between the lower rotating seat and the upper rotating seat, and a flexible spiral blade is provided on the shaft. The bottom of the inner box is detachably connected to a collecting bottom box, and a spline shaft is fixed on the collecting bottom box to limit the rotation of the shaft.

[0007] The purification mechanism further comprises a side plate for driving the packing column to synchronously rotate 180° and reciprocate at a small angle.

[0008] Furthermore, an upper sealing plate and a lower sealing plate are fixed to the upper and lower sides of the inner box respectively, the upper sealing plate is parallel to the lower sealing plate and is arranged at an angle, the axis of the packing column is perpendicular to the plane of the upper and lower sealing plates, an upper sealing bearing is fixed on the upper sealing plate, the upper rotating seat is rotatably connected to the upper sealing bearing, a lower sealing bearing is fixed on the lower sealing plate, the lower rotating seat is rotatably connected to the lower sealing bearing, and reset springs are fixed between the upper rotating seat and the upper sealing bearing, and between the lower rotating seat and the lower sealing bearing.

[0009] Furthermore, a water outlet and a water inlet are respectively provided on both sides of the top of the upper sealing plate, and the water inlet is lower than the water outlet.

[0010] Furthermore, a release port is provided at the bottom of the lower rotating seat, a tapered plug matching the release port is fixed to the bottom of the shaft, and a spline groove matching the spline shaft is also fixed to the bottom of the shaft;

[0011] An electromagnetic ring is fixed at the bottom of the spline shaft, a tensioning spring is fixed between the electromagnetic ring and the tapered plug, and the electromagnetic ring has a magnetic attraction force on the tapered plug when power is on.

[0012] Furthermore, a connection port is provided on the top of the upper rotating seat.

[0013] Furthermore, the two groups of side plates are symmetrically arranged, and a plurality of actuator rods are fixed between the two groups of side plates. The actuator rods are provided with a plurality of actuator slots arranged at equal intervals, and a pin corresponding to the actuator slot is fixed on the top of the upper rotating seat;

[0014] A plant support is further provided between the two groups of side panels, and a support rail for carrying the plant support is provided on the side panels.

[0015] Furthermore, a slide rail is provided at the bottom of the side panel, and the side panel is slidably connected to the top of the wetland box through the slide rail, and the side panel is driven by a cylinder to perform reciprocating motion.

[0016] Furthermore, the wetland system further comprises a screen box, an aeration box and a sedimentation box, wherein the screen box, aeration box, wetland box and sedimentation box are sequentially connected and arranged in a stepped manner along the water inlet direction, and the wetland system further comprises a discharge box connected to the output end of the sedimentation box and a water distribution box connected to the input end of the screen box;

[0017] The wetland box includes wetland box one, wetland box two and wetland box three.

[0018] Furthermore, a water distribution nozzle is provided in the water distribution box, a sampling point one is provided on the connecting pipe between the grille box and the aeration box, a sampling point two is provided on the connecting pipe between wetland box one and wetland box two, a sampling point three is provided on the connecting pipe between wetland box two and wetland box three, and a sampling point four is provided on the connecting pipe between the sedimentation box and the discharge box.

[0019] Furthermore, the ecological filler regeneration system includes a filter column 1, a filter column 2 and a water distribution tank, the water distribution tank has a built-in water pump, the output end of the water pump is connected to the bottom of the filter column 2 through a water guide pipe 1, a liquid flow meter 1 is provided on the water guide pipe 1, a lifting pump is further provided between the filter column 2 and the filter column, the top of the filter column 2 is connected to the input end of the lifting pump through the water guide pipe 2, a liquid flow meter 2 is provided on the water guide pipe 2, the output end of the lifting pump is connected to the bottom of the filter column 1, the top of the filter column 1 is discharged to the outside through a pipeline, an air pressure pump is further provided on one side of the filter column 2, the output end of the air pressure pump is connected to the bottom of the filter column 1 and the filter column 2 respectively through an air guide pipe, the filter column 1 and the filter column 2 are filled with filler, the filter column 2 is provided with sampling point 1, sampling point 2 and sampling point 3 from bottom to top, and the filter column 1 is provided with sampling point 4, sampling point 5 and sampling point 6 from bottom to top;

[0020] An aeration pump is provided on one side of the in-situ filler regeneration system, and the aeration pump is connected to the bottom of the in-situ filler regeneration system through a pipeline. A gas flow meter 1 and a control switch are provided on the output pipe of the aeration pump, and a sampling point 5 is provided on the in-situ filler regeneration system.

[0021] Compared with the existing technology, the advantages of this application are:

[0022] This application adopts an assembled assembly design, and the various systems can be quickly connected and installed, which greatly shortens the deployment time in emergency scenarios and can be put into use quickly to meet the urgent time requirements of environmental emergency treatment; the purification mechanism in the wetland system can effectively intercept and filter impurities and pollutants in sewage through the unique packing column design; the rotating structure of the packing column and the setting of flexible spiral blades can promote the uniformity of packing film and improve treatment efficiency; at the same time, the grid box, aeration box, sedimentation box, etc. work together to realize multi-stage treatment of sewage, further improving the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the wetland box proposed in this application;

[0025] Figure 3 This is a schematic diagram of the structure of the wetland box and purification mechanism proposed in this application;

[0026] Figure 4 This is a schematic diagram of the explosion structure of the purification mechanism proposed in this application;

[0027] Figure 5 This is a schematic diagram of the exploded structure of the side panel and its components proposed in this application;

[0028] Figure 6 This is a schematic diagram of the internal structure of the wetland box proposed in this application;

[0029] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0030] Figure 8 for Figure 6 A schematic diagram of the enlarged structure of the middle part B;

[0031] Figure 9 This is a schematic cross-sectional view of the wetland box proposed in this application;

[0032] Figure 10 This is a schematic cross-sectional view of the purification mechanism proposed in this application;

[0033] Figure 11 for Figure 10 Schematic diagram of the enlarged structure of the middle C part;

[0034] Figure 12 This is a schematic diagram of the structure of the packing column proposed in this application;

[0035] Figure 13 Schematic diagram of the explosion structure of the packing column proposed in this application;

[0036] Figure 14 This is a schematic diagram of the cross-sectional structure of the packing column proposed in this application;

[0037] Figure 15 This is a schematic diagram of the structure of the ecological filler regeneration system proposed in this application;

[0038] Figure 16 This is a schematic structural diagram of the in-situ filler regeneration system proposed in this application.

[0039] Description of the numbers in the figure:

[0040] 1. Wetland system; 101. Sampling point 1; 102. Sampling point 2; 103. Sampling point 3; 104. Sampling point 4; 11. Grid box; 12. Aeration tank; 13. Wetland tank; 131. Wetland tank 1; 132. Wetland tank 2; 133. Wetland tank 3; 14. Sedimentation tank; 15. Drainage tank; 16. Water distribution tank; 161. Water distribution nozzle;

[0041] 2. In-situ filler regeneration system; 201. Sampling point five; 21. Aeration pump; 22. Gas flow meter one; 23. Control switch;

[0042] 3. Ecological filler regeneration system; 301. Sampling point 1; 302. Sampling point 2; 303. Sampling point 3; 304. Sampling point 4; 305. Sampling point 5; 306. Sampling point 6; 31. Filter column 1; 32. Filter column 2; 33. Water distribution tank; 331. Water pump; 34. Water pipe 1; 341. Liquid flow meter 1; 35. Water pipe 2; 351. Liquid flow meter 2; 36. Air compressor pump; 361. Air pipe; 37. Lifting pump;

[0043] 4. Purification mechanism; 41. Side panel; 411. Support rail; 412. Slide rail; 42. Plant support; 43. Inner box; 431. Upper sealing plate; 4311. Water outlet; 4312. Water inlet; 432. Lower sealing plate; 433. Lower sealing bearing; 434. Upper sealing bearing; 45. Collection bottom box; 46. Actuator rod; 461. Actuator slot;

[0044] 5. Packing column; 51. Lower rotating seat; 511. Release port; 52. Columnar lattice shell; 53. Shaft; 531. Conical plug; 532. Spline groove; 54. Flexible spiral blade; 55. Upper rotating seat; 551. Pin; 552. Connecting port; 56. Return spring; 57. Sealing side rod;

[0045] 6. Spline shaft; 61. Tension spring; 62. Electromagnetic ring. DETAILED DESCRIPTION

[0046] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of this application.

[0047] Example, see Figure 1 - Figure 16 This embodiment provides an assembled integrated sewage treatment equipment for environmental emergency treatment, which can change the orientation of the packing column 5 facing the sewage side by rotating the packing column 5, thereby meeting the anti-clogging function of the packing column 5 in sewage treatment and increasing the biofilm formation efficiency of sewage treatment.

[0048] For details, please refer to Figure 1 - Figure 10 The present invention includes a prefabricated step-assembly wetland system 1, an in-situ filler regeneration system 2, and an ecological filler regeneration system 3. The wetland system 1 includes a wetland box 13, which has a built-in purification mechanism 4. The purification mechanism 4 includes an inner box 43, and the purification mechanism 4 also includes a side plate 41 for driving the filler column 5 to synchronously rotate 180 degrees and reciprocate at a small angle.

[0049] The inner box 43 is provided with a plurality of parallel and inclined packing columns 5, the packing columns 5 including columnar lattice shells 52, the columnar lattice shells 52 having built-in packing, see Figure 11 and Figure 13 In order to maintain an effective sewage flow gap between the packing columns 5, the upper opening of the columnar lattice shell 52 is in a straight groove shape and the lower opening is circular. The present invention forms a three-dimensional packing stacking method by arranging several packing columns 5 at equal intervals. Compared with the traditional packing stacking method with a flat bottom, the effective film-forming area of ​​the packing is larger and the sewage treatment efficiency is higher. The two ends of the columnar lattice shell 52 are respectively fixed with an upper rotating seat 55 and a lower rotating seat 51 by bolts. The sides of adjacent upper rotating seats 55 are arranged tangently, and two sets of symmetrically arranged sealing side rods 57 are fixed between the upper rotating seat 55 and the lower rotating seat 51.

[0050] See also Figure 11 and Figure 12 In order to maintain the sealing performance when adjacent sealing side rods 57 collide with each other, the two sets of sealing side rods 57 are arc-shaped on the side away from each other and are coaxially arranged with the axis of the lower rotating seat 51. The outer wall of the sealing side rod 57 is covered with a rubber layer. The radius of the ring of the sealing side rod 57 is equal to the radius of the lower rotating seat 51, and the arrangement spacing of the packing columns 5 is equal to the diameter of the lower rotating seat 51.

[0051] Please refer to the Figure 13In order to solve the problem of reduced film formation rate after the filler accumulates in the cylindrical lattice shell 52, the present application has a shaft 53 rotatably connected between the lower rotating seat 51 and the upper rotating seat 55, and a flexible spiral blade 54 is provided on the shaft 53. The bottom of the inner box 43 is detachably connected to the collecting bottom box 45, and the collecting bottom box 45 is fixed with a spline shaft 6 that limits the rotation of the shaft 53;

[0052] The present application adopts a method of fixing the shaft 53 and driving the cylindrical lattice shell 52 to rotate, so that the flexible spiral blades 54 disturb the filler in the cylindrical lattice shell 52, thereby achieving the purpose of improving the biofilm formation efficiency. The specific method is that through the small-scale reciprocating drive of the purification mechanism 4, the filler column 5 is driven to reciprocate at a small angle while maintaining the adjacent sealing side rods 57 in contact and tangent. The flexible spiral blades 54 are used to gently stir the filler in the driving cylindrical lattice shell 52, so that the sewage can fully contact the microorganisms on the surface of the filler, accelerate the mass transfer process of pollutants from the sewage to the surface of the microorganisms, and thus improve the removal efficiency of pollutants. When treating high-concentration sewage or when pollutants need to be quickly degraded, the stirring state can better meet the treatment requirements. At the same time, proper stirring can avoid excessive growth of biofilm and accumulation of suspended matter, maintain the porosity of the filler layer, and prevent the occurrence of clogging. At the same time, stirring can also continuously renew the biofilm on the surface of the filler and maintain the activity of the microorganisms.

[0053] See also Figure 5 , wherein, in order to satisfy the driving function of the side panels 41, the two sets of side panels 41 are symmetrically arranged, and a slide rail 412 is provided at the bottom of the side panels 41. The side panels 41 are slidably connected to the top of the wetland box 13 through the slide rail 412. The side panels 41 are driven by the cylinder to reciprocate. A plurality of actuator rods 46 are fixed between the two sets of side panels 41. The actuator rods 46 are provided with a plurality of actuator grooves 461 arranged at equal distances. The top of the upper rotating seat 55 is fixed with a pin 551 corresponding to the actuator groove 461. The pin 551 is connected to the actuator through the pin 551. The grooves 461 cooperate to synchronously drive the multiple packing columns 5 to turn over. Since the mesh holes of the columnar lattice shell 52 facing the water inlet are easily blocked by impurities larger than the mesh holes, and impurities smaller than the mesh holes enter the columnar lattice shell 52, in order to avoid the phenomenon of poor sewage flow after blockage, the side plates 41 can drive the packing columns 5 to rotate a certain angle so that the backwater side of the packing columns 5 faces the water inlet side of the sewage. At this time, the sewage can be flushed to disengage the blockage from the mesh holes and discharge into the next box through the gaps opened by the packing columns 5.

[0054] At the same time, since the filler on the side of the packing column 5 facing the water contacts the sewage first, the biofilm formation efficiency is high, while the biofilm formation efficiency of the filler on the side facing away from the sewage is low. In order to balance the biofilm formation efficiency of the filler in the packing column 5, the side plate 41 can regularly drive the packing column 5 to perform a 180° flip, thereby improving the biofilm formation uniformity of the packing column 5 and improving the sewage treatment efficiency.

[0055] A plant bracket 42 is also provided between the two sets of side panels 41. A support rail 411 for carrying the plant bracket 42 is provided on the side panel 41. Aquatic plants can be planted on the plant bracket 42, and combined with the filler column 5, the synergistic purification effect of plants, fillers and microorganisms on nitrogen and phosphorus pollutants in the water body can be achieved.

[0056] See also Figure 6 - Figure 10 , the upper and lower sides of the inner box 43 are respectively fixed with an upper sealing plate 431 and a lower sealing plate 432, the upper sealing plate 431 and the lower sealing plate 432 are parallel and inclined, the axis of the packing column 5 is perpendicular to the plane of the upper sealing plate 431 and the lower sealing plate 432, in order to improve the sealing performance of the rotation node between the packing column 5 and the inner box 43 and prevent sewage leakage, an upper sealing bearing 434 is fixed on the upper sealing plate 431, and the upper rotating seat 55 is rotatably connected to the upper sealing bearing 434, and a lower sealing bearing 433 is fixed on the lower sealing plate 432. The rotating seat 51 is rotatably connected to the lower sealing bearing 433. Reset springs 56 are fixed between the upper rotating seat 55 and the upper sealing bearing 434, and between the lower rotating seat 51 and the lower sealing bearing 433. Through the setting of the reset spring 56, when the side plate 41 no longer drives the packing column 5 to deflect, the packing column 5 can automatically reset using the reset spring 56. At the same time, when the sewage flow rate in the wetland box 13 is too large, the water flow impacting the surface of the packing column 5 can also cause the packing column 5 to deflect at a small angle, thereby achieving the purpose of automatically disturbing the packing.

[0057] See also Figure 9 A water outlet 4311 and a water inlet 4312 are respectively provided on both sides of the top of the upper sealing plate 431, and the water inlet 4312 is lower than the water outlet 4311. Since the wetland system 1 applied for adopts an assembled stepped assembly method, when the various boxes are connected by waterfalls, the sewage entering through the water inlet 4312 gradually passes through the packing column 5 in the inner box 43 and is discharged through the water inlet 4312, thereby achieving the purpose of intercepting nitrogen and phosphorus in the sewage.

[0058] See also Figure 7 In order to release the impurities accumulated in the packing column 5 in time, a release port 511 is provided at the bottom of the lower rotating seat 51, and a tapered plug 531 matching the release port 511 is fixed to the bottom of the shaft 53, and a spline groove 532 matching the spline shaft 6 is also fixed to the bottom of the shaft 53; an electromagnetic ring 62 is fixed to the bottom of the spline shaft 6, and a tensioning spring 61 is fixed between the electromagnetic ring 62 and the tapered plug 531. The electromagnetic ring 62 has a magnetic attraction on the tapered plug 531 under power-on conditions. When it is necessary to release the impurities in the packing column 5, the electromagnetic ring 62 is energized, and the tapered plug 531 is attracted to move downward, so that the tapered plug 531 and the release port 511 form a gap smaller than the diameter of the filler particles, so that the impurities fall through the gap to the collection bottom box 45.

[0059] For further information, see Figure 8A connection port 552 is also provided on the top of the upper rotating seat 55. On the one hand, high-pressure clean water can be connected through the connection port 552, and the packing in the packing column 5 can be flushed in conjunction with the downward movement of the conical plug 531 to further maintain the porosity of the packing layer and the impurity removal efficiency. On the other hand, when the packing is difficult to maintain by external means, the electromagnetic ring 62 is energized to adsorb the conical plug 531 and move it downward, so that a gap larger than the diameter of the packing particles is formed between the conical plug 531 and the release port 511. At this time, new packing is added to the packing column 5 through the connection port 552, and the discarded packing enters the collection bottom box 45 for recycling.

[0060] See also Figure 1 The complete wetland system 1 also includes a screen box 11, an aeration box 12 and a sedimentation box 14. The screen box 11, the aeration box 12, the wetland box 13 and the sedimentation box 14 are connected in sequence along the water inlet direction and arranged in a stepped manner. The wetland system 1 also includes a discharge box 15 connected to the output end of the sedimentation box 14 and a water distribution box 16 connected to the input end of the screen box 11; the wetland box 13 includes wetland box one 131, wetland box two 132 and wetland box three 133.

[0061] The grid box 11, aeration box 12, wetland box 13 (including wetland box 1 131, wetland box 2 132, and wetland box 3 133), and sedimentation box 14 are assembled in a step-like manner, connected in sequence along the water inlet direction. Pipes to the discharge box 15 and water distribution box 16 are connected. A water distribution nozzle 161 is installed in the water distribution box 16.

[0062] Install the inner box 43 within the wetland box 13, secure the upper and lower sealing plates 431 and 432, and install the upper and lower sealing bearings 434 and 433. Install the upper rotating seat 55 and lower rotating seat 51 of the packing column 5 onto the upper and lower sealing bearings 434 and 433, respectively, and connect the return spring 56. Install the flexible spiral blade 54 onto the shaft 53, and rotatably connect the shaft 53 to the lower and upper rotating seats 51 and 55.

[0063] Install the collection base box 45 and mate the spline shaft 6 with the spline groove 532 at the bottom of the shaft 53. Install the actuator rod 46, support rail 411, and slide rail 412 on the side panel 41. Mount the side panel 41 on top of the wetland tank 13 via the slide rail 412 and connect the cylinder to reciprocate the side panel 41. Install the plant support 42 between the side panels 41.

[0064] Sewage flows from water distribution tank 16 through water distribution nozzles 161 into screen box 11. After initial filtration through the screen, it enters aeration tank 12, where it undergoes aeration treatment before flowing into wetland tank 13. Within wetland tank 13, the sewage is processed by purification mechanism 4. Impurities and pollutants are intercepted and decomposed through filtration by packing columns 5 and agitation by flexible spiral blades 54. When impurities within packing columns 5 need to be cleaned, electromagnetic ring 62 is energized, attracting conical plug 531 and opening release port 511 to discharge the collected impurities. Periodically, a cylinder drives side plate 41, causing actuator slot 461 on actuator rod 46 to drive pin 551, thereby synchronously rotating packing columns 5 180°, changing the sewage's filtration path and improving filtration efficiency.

[0065] In the emergency situation of sewage treatment, in order to quickly formulate the best plan for sewage treatment, the experimental model of wetland system 1 system 1 that can be quickly built on site can be used to study and analyze the purification effect of wetlands on nitrogen and phosphorus in water bodies. Factors such as influent concentration, hydraulic retention time, and aeration volume are selected as the main factors affecting the water purification effect of wetlands. According to the water quality characteristics of actual rivers, five indicators such as total nitrogen, ammonia nitrogen, nitrate nitrogen, total phosphorus, and phosphate are selected as monitoring indicators.

[0066] First, a single-factor experiment was conducted under continuous and uniform inflow conditions to explore the nitrogen and phosphorus transport patterns of wetland system 1 under different hydraulic retention times, different aeration volumes, and different inflow concentrations. Then, a sensitivity analysis of denitrification and phosphorus removal in wetland system 1 was conducted based on orthogonal experiments to obtain the primary and secondary relationships of the factors affecting nitrogen and phosphorus interception efficiency and the optimal combination of orthogonal experiments, thereby quickly obtaining the optimal operating condition data of the wetland.

[0067] Specifically, a water distribution nozzle 161 is set in the water distribution tank 16. In order to explore the interception law of nitrogen and phosphorus by the wetland system 1, referring to the principle of uniform distribution along the process, a sampling point 101 is set on the connecting pipe between the grille box 11 and the aeration box 12. The water quality is equivalent to the water quality of the river. A sampling point 2 102 is set on the connecting pipe between the wetland box 131 and the wetland box 2 132. A sampling point 3 103 is set on the connecting pipe between the wetland box 2 132 and the wetland box 3 133. A sampling point 4 104 is set on the connecting pipe between the sedimentation box 14 and the discharge box 15.

[0068] Water quality samples were collected between 8:00 and 9:00 a.m. on days 0, 1, 3, 5, and 7 after the growth of aquatic plants stabilized (the initial water sample was collected on day 0). A diversion tube was installed at the sampling point to facilitate the collection of water samples. 600 mL of water sample was collected each time and then transferred to a pre-cleaned 600 mL polyethylene bottle for immediate testing.

[0069] The main analysis indicators of this experiment include NH4 +-N, TN, TP and COD, etc. The water samples obtained daily were filtered through a 0.45 μm filter membrane before measuring various parameters. The measurement methods of the main water quality indicators are shown in Table 1.

[0070]

[0071] After the wetland system 1 is running stably, the hydraulic retention time is controlled at 24h, and three gradients of no aeration, low aeration and high aeration are set, respectively. 3 / h, 0.05m 3 / h, 0.2m 3 / h, the inlet flow rate was controlled at 9.45L / h, and the configured nitrogen and phosphorus concentrations of inlet water (TN: 3.0mg / L, TP: 0.06mg / L) were introduced into the artificial wetland. Sampling sections were set at the inlet of wetland system 1, the outlet of wetland box 131, the outlet of wetland box 2 132, and the outlet of wetland system 1, with a total of 4 sampling points. 500mL water samples were collected at the 4 fixed sampling points on the 0th, 1st, 3rd, 5th, and 7th days respectively. The monitoring indicators mainly included ammonia nitrogen, total nitrogen, total phosphorus, etc., to test the nitrogen and phosphorus retention efficiency of wetland system 1 under different aeration conditions and determine the optimal aeration conditions.

[0072] After the wetland system 1 is running stably, the hydraulic retention time is controlled at 24h, the water flow rate is controlled at 9.45L / h, and the low aeration (0.05m 3 / h), under the conditions of high (TN: 7.0 mg / L, TP: 0.7 mg / L), medium (TN: 4.5 mg / L, TP: 0.35 mg / L) and low (TN: 3.0 mg / L, TP: 0.06 mg / L) nitrogen and phosphorus influent concentrations, sampling sections were set at the inlet of wetland system 1, the outlet of wetland box 131, the outlet of wetland box 2 132 and the outlet of wetland system 1, with a total of 4 sampling points. 500 mL of water samples were collected at the 4 fixed sampling points on the 0th, 1st, 3rd, 5th and 7th days respectively. The monitoring indicators mainly included ammonia nitrogen, total nitrogen, total phosphorus, etc., to test the nitrogen and phosphorus retention efficiency of wetland system 1 under different influent concentrations and determine the optimal influent concentration.

[0073] Because the initial nitrogen and phosphorus concentration of the influent, hydraulic retention time, and aeration volume have a significant impact on the nitrogen and phosphorus interception of the waterfront wetland, the experiment should select these three indicators as research factors. 4 ) orthogonal table, selecting three factors: influent concentration (A), hydraulic retention time (B), and aeration rate (C) to design an orthogonal experiment for nitrogen and phosphorus removal in wetland system 1. The three-factor, three-level design table is shown in Table 2. Prior to the experimental run, the stepped wetland model was pre-planted with the appropriate aquatic plants and allowed to grow for approximately 20 days.

[0074]

[0075] The reagents for preparing river pollutants are glucose, sodium chloride, potassium dihydrogen phosphate, sodium bicarbonate, calcium chloride, ferric chloride, and magnesium sulfate. Before the test, the solution is prepared and stirred evenly before pouring into the dosing water tank (350L). Under each set of test conditions, the test is run for 7 days. Before running the next set of tests, it is flushed with tap water for 2 days to ensure the desorption of nitrogen and phosphorus in the wetland. During the test, the concentrations of different forms of nitrogen and phosphorus pollutants in the wetland system 1 model are sampled and monitored at 0h, 24h, 72h, 120h, and 168h, and the sensitivity of the denitrification and phosphorus removal factors of the wetland system 1 is analyzed.

[0076] In order to test the efficiency of biological regeneration of fillers in wetland system 1, the present invention also provides an ecological filler regeneration system 3 for biofilter column biofilm test. For details, please refer to Figure 15 The ecological filler regeneration system 3 includes a filter column 1 31, a filter column 2 32 and a water distribution tank 33. The water distribution tank 33 has a built-in water pump 331. The output end of the water pump 331 is connected to the bottom of the filter column 2 32 through a water pipe 1 34. A liquid flow meter 1 341 is provided on the water pipe 1 34. A lifting pump 37 is also provided between the filter column 2 32 and the filter column 1 31. The top of the filter column 2 32 is connected to the input end of the lifting pump 37 through a water pipe 2 35. A liquid flow meter 2 351 is provided on the water pipe 2 35. The output end of the lifting pump 37 is connected to the filter column 2 The bottom of the filter column 31 is connected, and the top of the filter column 31 is discharged to the outside through a pipe. An air compressor 36 is also provided on one side of the filter column 32. The output end of the air compressor 36 is connected to the bottom of the filter column 31 and the filter column 32 respectively through an air guide pipe 361. The filter column 31 and the filter column 32 are filled with fillers. The filter column 32 is provided with a sampling point 1 301, a sampling point 2 302 and a sampling point 303 from bottom to top. The filter column 31 is provided with a sampling point 4 304, a sampling point 5 305 and a sampling point 6 306 from bottom to top.

[0077] The biofilm formation test of the present application adopts the activated sludge biofilm formation method, and the inoculated sludge comes from the sludge thickening tank of the sewage treatment plant.

[0078] The biological filter column regeneration experimental device is a two-stage aeration biological filter column. Filter column 1 31 and filter column 2 32 are both made of organic glass columns with a column height of 2.0m and an inner diameter of 0.3m. Filter column 2 32 is filled with 1.4m high filler, and filter column 1 31 is filled with 1.6m high filler. Three sampling points are set at the top, middle and bottom of filter column 2 32 and filter column 1 31 according to the filler column. The experimental device and sampling points in the biofilm stage are arranged as follows Figure 15 Height shown.

[0079] The specific dosage of experimental drugs and experimental procedures are as follows:

[0080] ① Experimental drugs: glucose 400 mg / L, ammonium chloride 19.1 mg / L, magnesium sulfate 4.4 mg / L, calcium chloride 4 mg / L, manganese sulfate 4 mg / L, ferrous sulfate 2.5 mg / L, potassium dihydrogen phosphate 2.2 mg / L, sodium chloride 73.3 mg / L. The above drugs were adjusted to pH 7.5-8 with sodium bicarbonate to prepare a mixed solution. Trace solution was added at a ratio of 2 ml to 1 L of mixed solution. (Note: Trace solution preparation (g / L): EDTA 50.0 g / L; ZnSO4 2.20 g / L; C a Cl2 5.50g / L; MnCl2·4H2O 5.06g / L; FeSO4·7H2O 5.00g / L; (NH4)Mo7O2·4H2O 1.10g / L; CuSO4·5H2O 1.57g / L; CoCl2·6H2O 1.61g / L; pH=7.0).

[0081] ② Experimental steps: put the above drugs into 1000L water distribution tank according to the dosage, stir them thoroughly and then load about 5kg of concentrated sludge and zeolite into filter column 232 in layers. When the initial organic load is 4.4 kgCOD / m 3 On day 4, a total nitrogen concentration of 14.65 mg / L, an aeration rate of 0.5 L / min, and an inlet flow rate of 60 L / h were cycled for 5 days to conduct biofilm formation tests. Water samples were taken from six sampling points every 24 hours to measure COD and ammonia nitrogen concentrations.

[0082] The criteria for successful film formation are: NH4 + -N removal rate reaches about 60%, and COD removal rate reaches about 50%.

[0083] After the biofilm is formed, the filler is biologically regenerated. The hydraulic load is increased to 1m 3 / h, organic load 4.4kgCOD / m 3 d, with the aeration rate maintained at 0.5 mL / min. The effluent was discharged directly. Three sampling points were set up on filter columns 2, 32, and 2, from top to bottom. Water samples were taken in layers every 8 hours for determination of ammonia nitrogen concentration. Every 12 hours, a certain amount of filler was removed from the upper layer of each filter column, quickly washed with distilled water to remove the biofilm on the filler surface, and dried. Then, 2 g of the filler was weighed and placed in a conical flask containing 150 mL of a 5 mg / L ammonia nitrogen solution. The solution was shaken at a constant temperature of 150 rpm for 24 hours. The ammonia nitrogen concentration of the solution was then measured. The ammonia nitrogen adsorption capacity of the filler was calculated and compared with that of fresh filler under the same conditions to calculate the filler regeneration rate.

[0084] In order to conduct an in-situ regeneration test of wetland fillers, the present invention also includes an in-situ filler regeneration system 2. Specifically, an aeration pump 21 is provided on one side of the in-situ filler regeneration system 2. The aeration pump 21 is connected to the bottom of the in-situ filler regeneration system 2 through a pipeline. A gas flow meter 22 and a control switch 23 are provided on the output pipe of the aeration pump 21. A sampling point 5 201 is provided on the in-situ filler regeneration system 2.

[0085] Preparation of microbial adsorbent: The preparation test of microbial adsorbent is mainly carried out through the in-situ filler regeneration system 2. The test device is as follows: Figure 16 As shown, 2 kg of ceramsite washed with distilled water was added thereto, and then 10 L of a mixed bacterial solution of Bacillus megaterium and nitrifying bacteria was added.

[0086] The mixed bacterial solution was prepared by dissolving 2.5g of Bacillus megaterium solid particles and 2.5g of nitrifying bacteria particles in 10L of distilled water and activating for 6 hours. After activation, a certain amount of microbial culture solution was added to the water. The specific dosages of the experimental chemicals were as follows: 400mg / L glucose, 19.10mg / L ammonium chloride, 4.4mg / L magnesium sulfate, 4mg / L calcium chloride, 4mg / L manganese sulfate, 2.5mg / L ferrous sulfate, 2.2mg / L potassium dihydrogen phosphate, and 73.3mg / L sodium chloride. The pH of the solution was adjusted to 7.5-8 using sodium bicarbonate. In addition, 2mL of trace solution was added. The configuration of trace solution is mainly as follows, trace solution preparation (g / L): EDTA 15 g / L; H3BO4 0.014 g / L; CuSO4·5H2O 0.25 g / L; MnCl2·4H2O0.99 g / L; CuSO4·5H2O 0.25 g / L; ZnSO4·7H2O 0.43 g / L; NiCl2·6H2O 0.19 g / L; NaSeO4·10H2O 0.21 g / L; NaMoO4·2H2O 0.22 g / L, NaWO4·2H2O 0.050 g / L.

[0087] Add the prepared microbial adsorbent solution to the in-situ filler regeneration system 2, adjust the aeration rate of the aeration pump 21 to 0.05L / min, and run it continuously for 5 days to perform artificial biofilm treatment. During the biofilm formation period, three sampling points (high, medium, and low) are set at different heights of the column. Water samples are taken every other day to monitor the concentrations of ammonia nitrogen, total phosphorus, and COD in the water. The evaluation criteria for the successful preparation of microbial adsorbent are: NH4 + -N removal rate reaches about 60%, and COD removal rate reaches about 50%.

[0088] In-situ regeneration test design for wetland fill: Prepared microbial adsorbent was placed in aeration tank 12 of wetland system 1 to regenerate the fill in situ. In-situ fill regeneration ensures that microorganisms adhere to the fill surface within the wetland for desorption. Water containing both bacterial cultures flows through the pretreatment system, along the stepped wetland, into sedimentation tank 14, and then back into water distribution tank 16, forming a complete circulation system.

[0089] Wetland System 1 was operated for 4-7 days to allow biofilm formation. Water intakes were set up at the outlets of the three stepped wetlands to monitor changes in nitrogen and phosphorus in the water during filler regeneration. After biofilm formation was complete, a filler regeneration test was conducted. During the filler regeneration process, water from the pretreatment system passed through the stepped wetlands into the sedimentation tanks, from which it was directly released into the river system. The regeneration test lasted for 30 days. Every 0 days, regenerated filler was removed from each stepped wetland, rinsed with distilled water to remove the surface biofilm, and then subjected to an adsorption test to determine the adsorption capacity. The inlet water concentration was the same as that during biofilm formation, the inlet flow rate was 40 L / h, and the aeration rate was controlled at 500 mL / min.

[0090] Through indoor experiments, saturated packing was regenerated using both ecological packing filter column regeneration and wetland in-situ regeneration to explore the regeneration performance of saturated packing. First, an ecological packing filter column was constructed to explore the regeneration effect of the biological packing under dynamic conditions of continuous water inflow. The microbial diversity during the regeneration process was observed and analyzed, preliminarily revealing the regeneration mechanism of the biological packing from a microstructural perspective. Then, a self-prepared microbial adsorbent was introduced to form biofilms in the wetland. Under continuous water inflow, the migration and transformation patterns of nitrogen and phosphorus during the in-situ regeneration of the prefabricated stepped wetland system 1 and the regeneration effect of the saturated packing were explored.

[0091] This application adopts an assembled assembly design, and the various systems can be quickly connected and installed, which greatly shortens the deployment time in emergency scenarios and can be put into use quickly to meet the urgent time requirements of environmental emergency treatment; the purification mechanism in the wetland system can effectively intercept and filter impurities and pollutants in sewage through the unique packing column design; the rotating structure of the packing column and the setting of flexible spiral blades can promote the uniformity of packing film and improve treatment efficiency; at the same time, the grid box, aeration box, sedimentation box, etc. work together to realize multi-stage treatment of sewage, further improving the sewage treatment effect.

[0092] The above is only the best implementation method adopted by this application in combination with current actual needs, but the scope of protection of this application is not limited to this.

Claims

1. An assembled integrated sewage treatment equipment for environmental emergency treatment, characterized by: The invention comprises a wetland system (1) assembled in an assembled ladder, an in-situ filler regeneration system (2) and an ecological filler regeneration system (3), wherein the wetland system (1) comprises a wetland box (13), wherein the wetland box (13) is provided with a purification mechanism (4), wherein the purification mechanism (4) comprises an inner box (43), wherein the inner box (43) is provided with a plurality of parallel and inclined filler columns (5), wherein the filler columns (5) comprise a columnar lattice shell (52), wherein the columnar lattice shell (52) is provided with filler, and wherein both ends of the columnar lattice shell (52) are fixed respectively. An upper rotating seat (55) and a lower rotating seat (51) are provided, and the sides of the adjacent upper rotating seats (55) are tangentially arranged. Two groups of symmetrically arranged sealing side rods (57) are fixed between the upper rotating seat (55) and the lower rotating seat (51). The two groups of sealing side rods (57) are arranged in an arc shape on the side away from each other and are coaxially arranged with the axis of the lower rotating seat (51). The radius of the ring of the sealing side rods (57) is equal to the radius of the lower rotating seat (51), and the arrangement spacing of the packing columns (5) is equal to the diameter of the lower rotating seat (51); A shaft (53) is rotatably connected between the lower rotating seat (51) and the upper rotating seat (55), and a flexible spiral blade (54) is provided on the shaft (53). A collecting bottom box (45) is detachably connected to the bottom of the inner box (43), and a spline shaft (6) for limiting the rotation of the shaft (53) is fixed on the collecting bottom box (45); The purification mechanism (4) further includes a side plate (41) for driving the packing column (5) to synchronously rotate 180° and reciprocate at a small angle; An upper sealing plate (431) and a lower sealing plate (432) are fixed to the upper and lower sides of the inner box (43), respectively. The upper sealing plate (431) and the lower sealing plate (432) are parallel and tilted. The axis of the packing column (5) is perpendicular to the planes of the upper sealing plate (431) and the lower sealing plate (432). An upper sealing bearing (434) is fixed to the upper sealing plate (431). The upper rotating seat (55) is rotatably connected to the upper sealing bearing (434). A lower sealing bearing (433) is fixed to the lower sealing plate (432). The lower rotating seat (51) is rotatably connected to the lower sealing bearing (433). A return spring (56) is fixed between the upper rotating seat (55) and the upper sealing bearing (434), and between the lower rotating seat (51) and the lower sealing bearing (433). A water outlet (4311) and a water inlet (4312) are respectively provided on both sides of the top of the upper sealing plate (431), and the water inlet (4312) is lower than the water outlet (4311).

2. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1 is characterized in that: The bottom of the lower rotating seat (51) is provided with a release port (511), the bottom of the shaft (53) is fixed with a conical plug (531) matching the release port (511), and the bottom of the shaft (53) is also fixed with a spline groove (532) matching the spline shaft (6); An electromagnetic ring (62) is fixed to the bottom of the spline shaft (6), a tensioning spring (61) is fixed between the electromagnetic ring (62) and the tapered plug (531), and the electromagnetic ring (62) has a magnetic attraction force on the tapered plug (531) when powered.

3. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1 is characterized in that: The top of the upper rotating seat (55) is also provided with a connection port (552).

4. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1 is characterized in that: The two groups of side plates (41) are symmetrically arranged, and a plurality of actuating rods (46) are fixed between the two groups of side plates (41). The actuating rods (46) are provided with a plurality of actuating grooves (461) arranged at equal intervals, and a pin (551) corresponding to the actuating grooves (461) is fixed on the top of the upper rotating seat (55); A plant support (42) is further provided between the two groups of side panels (41), and a support rail (411) for carrying the plant support (42) is provided on the side panels (41).

5. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 4 is characterized in that: A slide rail (412) is provided at the bottom of the side plate (41), and the side plate (41) is slidably connected to the top of the wetland box (13) via the slide rail (412). The side plate (41) is driven by a cylinder to perform reciprocating motion.

6. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1 is characterized in that: The wetland system (1) further comprises a grid box (11), an aeration box (12) and a sedimentation box (14); the grid box (11), the aeration box (12), the wetland box (13) and the sedimentation box (14) are sequentially connected and arranged in a stepped manner along the water inlet direction; the wetland system (1) further comprises a discharge box (15) connected to the output end of the sedimentation box (14) and a water distribution box (16) connected to the input end of the grid box (11); The wetland box (13) includes wetland box one (131), wetland box two (132) and wetland box three (133).

7. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 6, characterized in that: A water distribution nozzle (161) is provided in the water distribution box (16), a sampling point one (101) is provided on the connecting pipe between the grille box (11) and the aeration box (12), a sampling point two (102) is provided on the connecting pipe between the wetland box one (131) and the wetland box two (132), a sampling point three (103) is provided on the connecting pipe between the wetland box two (132) and the wetland box three (133), and a sampling point four (104) is provided on the connecting pipe between the sedimentation box (14) and the discharge box (15).

8. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1 is characterized in that: The ecological filler regeneration system (3) includes a filter column 1 (31), a filter column 2 (32) and a water distribution tank (33). The water distribution tank (33) has a built-in water pump (331). The output end of the water pump (331) is connected to the bottom of the filter column 2 (32) through a water pipe 1 (34). A liquid flow meter 1 (341) is provided on the water pipe 1 (34). A lifting pump (37) is also provided between the filter column 2 (32) and the filter column 1 (31). The top of the filter column 2 (32) is connected to the input end of the lifting pump (37) through a water pipe 2 (35). A liquid flow meter 2 (351) is provided on the water pipe 2 (35). The output end of the lifting pump (37) is connected to the input end of the lifting pump (37). The outlet end is connected to the bottom of the filter column 1 (31), and the top of the filter column 1 (31) is discharged to the outside through a pipeline. An air pressure pump (36) is also provided on one side of the filter column 2 (32). The output end of the air pressure pump (36) is connected to the bottom of the filter column 1 (31) and the bottom of the filter column 2 (32) through an air guide pipe (361). The filter column 1 (31) and the filter column 2 (32) are filled with fillers. The filter column 2 (32) is provided with sampling point 1 (301), sampling point 2 (302) and sampling point 3 (303) from bottom to top, and the filter column 1 (31) is provided with sampling point 4 (304), sampling point 5 (305) and sampling point 6 (306) from bottom to top. An aeration pump (21) is provided on one side of the in-situ filler regeneration system (2). The aeration pump (21) is connected to the bottom of the in-situ filler regeneration system (2) through a pipeline. A gas flow meter (22) and a control switch (23) are provided on the output pipe of the aeration pump (21). A sampling point (201) is provided on the in-situ filler regeneration system (2).

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