Assembly type integrated sewage treatment equipment for environmental emergency treatment

Abstract

The invention provides assembly type integrated sewage treatment equipment for environmental emergency treatment, which is applied to the field of sewage treatment, and comprises an assembly type stepped assembled wetland system, an in-situ filler regeneration system and an ecological filler regeneration system, the wetland system comprises a wetland box, a purification mechanism is arranged in the wetland box, the wetland box comprises an inner box, and an outer box is arranged in the inner box; a plurality of parallel and inclined filler columns are arranged in the inner box, each filler column comprises a columnar reticulated shell, filler and flexible spiral blades are arranged in the columnar reticulated shell, the purification mechanism further comprises a side plate, the assembly type assembly design is adopted, all the systems can be rapidly connected and installed, the deployment time in an emergency scene is greatly shortened, the design of the filler columns is convenient, and the service life of the system is prolonged. Impurities and pollutants in sewage can be effectively intercepted and filtered, the arrangement of a rotating structure of the filler column and the flexible spiral blades can promote the uniformity of filler biofilm formation, and the treatment efficiency is improved; meanwhile, the grid box, the aeration box, the settling box and the like work cooperatively, so that multi-stage treatment of the sewage is realized.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and particularly to a prefabricated integrated sewage treatment equipment for environmental emergency treatment. Background Art

[0002] With the frequent occurrence of sudden water pollution incidents caused by industrial accidents, extreme weather, etc., the demand for emergency sewage disposal is becoming increasingly urgent. Such incidents often have characteristics such as complex pollutant types, large water quality fluctuations, and strong treatment timeliness. There is an urgent need to deploy sewage treatment equipment that is rapid, highly efficient, stable, and adaptable. However, traditional emergency sewage treatment technologies have problems such as complex installation, large floor area, low treatment efficiency, and inability to flexibly respond to different pollution levels and water quality changes in practical applications.

[0003] An artificial wetland is an artificially designed and constructed imitation of a natural ecosystem. By controlling the water flow path, it uses the synergistic effects of physical filtration, chemical precipitation, biodegradation, etc. to treat sewage, achieving the dual goals of pollution control and resource reuse. The sewage treatment of sudden water pollution incidents needs to take into account the dual goals of rapid emergency response and ecological restoration. On the one hand, it is necessary to quickly cut off the pollution chain in the initial stage of pollution diffusion. On the other hand, it is necessary to avoid the secondary ecological damage that may be caused by traditional chemical agent-dependent treatment technologies. Due to its advantages such as low carbon, low energy consumption, and strong biological affinity, the artificial wetland technology is regarded as an ideal choice for emergency sewage treatment.

[0004] Although the artificial wetland technology has advantages such as low energy consumption and strong ecological compatibility, its construction depends on complex civil engineering, the construction period is up to several months, and it is restricted by site conditions and climate factors. It takes several months for the biofilm to mature, which cannot meet the immediate requirements of emergency disposal. In addition, the single structure design of traditional artificial wetlands has insufficient redundant treatment capacity in the face of water quality fluctuations, and is prone to problems such as filler blockage and low film hanging efficiency. Therefore, the present invention provides a prefabricated integrated sewage treatment equipment for environmental emergency treatment, and through the deep integration of prefabricated integrated design and the enhancement of artificial wetland functions, constructs an integrated solution of "rapid response - efficient treatment - ecological output", providing technical support for the green emergency disposal of sudden water pollution incidents. Summary of the Invention

[0005] The purpose of this application is to solve the technical problems of easy blockage of packing in existing sewage treatment devices and low film hanging efficiency. Compared with the prior art, an assembled integrated sewage treatment equipment for environmental emergency treatment is provided, including a wetland system, an in-situ packing regeneration system, and an ecological packing regeneration system assembled in a stepped manner. The wetland system includes a wetland box, and a purification mechanism is arranged inside the wetland box. The purification mechanism includes an inner box, and a number of parallel and inclined packing columns are arranged inside the inner box. The packing column includes a columnar reticulated shell, and packing is arranged inside the columnar reticulated shell. Upper and lower rotating seats are respectively fixed at both ends of the columnar reticulated shell. The sides of adjacent upper rotating seats are tangent to each other. Two groups of symmetrically arranged sealing side rods are fixed between the upper rotating seat and the lower rotating seat. The sides of the two groups of sealing side rods away from each other are arc-shaped and coaxial with the axis of the lower rotating seat. The radius of the circular ring of the sealing side rod is equal to the radius of the lower rotating seat. The arrangement spacing of the packing columns is equal to the diameter of the lower rotating seat; A shaft rod is rotatably connected between the lower rotating seat and the upper rotating seat. A flexible spiral blade is arranged on the shaft rod. A collecting bottom box is detachably connected to the bottom of the inner box. A spline shaft for restricting the rotation of the shaft rod is fixed on the collecting bottom box; The purification mechanism further includes side plates for driving the packing columns to rotate synchronously by 180° and reciprocally deflect at a small angle.

[0006] Furthermore, upper and lower sealing plates are respectively fixed on the upper and lower sides of the inner box. The upper sealing plate and the lower sealing plate are parallel and inclined. The axis of the packing column is perpendicular to the planes of the upper sealing plate and the lower sealing plate. 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. Return springs are fixed between the upper rotating seat and the upper sealing bearing, and between the lower rotating seat and the lower sealing bearing.

[0007] Furthermore, a water outlet and a water inlet are respectively arranged on both sides of the top of the upper sealing plate. The water inlet is lower than the water outlet.

[0008] Furthermore, a release port is arranged at the bottom of the lower rotating seat. A conical plug matched with the release port is fixed at the bottom of the shaft rod. A spline groove matched with the spline shaft is also fixed at the bottom of the shaft rod; An electromagnetic ring is fixed at the bottom of the spline shaft. A tension spring is fixed between the electromagnetic ring and the conical plug. The electromagnetic ring has a magnetic attraction force on the conical plug under the condition of being electrified. Furthermore, a connection port is also arranged at the top of the upper rotating seat.

[0009] Furthermore, the two groups of side plates are symmetrically arranged. A number of actuating rods are fixed between the two groups of side plates. A number of equidistantly arranged actuating grooves are arranged on the actuating rods. A pin column corresponding to the actuating grooves is fixed at the top of the upper rotating seat; A plant support is also provided between the two groups of side plates, and a support rail for carrying the plant support is provided on the side plates.

[0010] Furthermore, a slide rail is provided at the bottom of the side plate, and the side plate is slidably connected to the top of the wetland box through the slide rail, and the side plate is driven by a cylinder to perform reciprocating motion.

[0011] Furthermore, the wetland system further includes a grille box, an aeration box and a sedimentation box. The grille box, the aeration box, the wetland box and the sedimentation box are sequentially connected and arranged in a stepped manner along the water inlet direction. The wetland system further includes a discharge box connected to the output end of the sedimentation box and a water distribution box connected to the input end of the grille box; The wetland box includes a first wetland box, a second wetland box and a third wetland box.

[0012] Furthermore, a water distribution sprinkler is provided in the water distribution box, a sampling point one is provided on the communication pipeline between the grille box and the aeration box, a sampling point two is provided on the communication pipeline between the first wetland box and the second wetland box, a sampling point three is provided on the communication pipeline between the second wetland box and the third wetland box, and a sampling point four is provided on the communication pipeline between the sedimentation box and the discharge box.

[0013] Furthermore, the ecological filler regeneration system includes a first filter column, a second filter column and a water distribution tank. A water pump is built in the water distribution tank. The output end of the water pump is connected to the bottom of the second filter column through a first water guide pipe. A first liquid flowmeter is provided on the first water guide pipe. A lift pump is also provided between the second filter column and the first filter column. The top of the second filter column is connected to the output end of the lift pump through a second water guide pipe. A second liquid flowmeter is provided on the second water guide pipe. The output end of the lift pump is connected to the bottom of the first filter column. The bottom of the first filter column is discharged to the outside through a pipeline. An air compressor pump is also provided on one side of the second filter column. The output end of the air compressor pump is connected to the bottoms of the first filter column and the second filter column through an air guide pipe respectively. The first filter column and the second filter column are filled with fillers. Sampling points one, two and three are respectively provided on the second filter column from bottom to top. Sampling points four, five and six are respectively provided on the first filter column from bottom to top; An aeration pump is provided on one side of the in-situ filler regeneration system. The aeration pump is connected to the bottom of the in-situ filler regeneration system through a pipeline. A gas flowmeter one and a control switch are provided on the output pipe of the aeration pump. A sampling point five is provided on the in-situ filler regeneration system.

[0014] Compared with the prior art, the advantages of this application are as follows: This application adopts an assembled design, enabling rapid connection and installation between systems, greatly shortening the deployment time in emergency scenarios, and being able to be quickly put into use to meet the urgent requirements of environmental emergency treatment for time. The purification mechanism in the wetland system can effectively intercept and filter impurities and pollutants in sewage through a unique packing column design. The rotating structure of the packing column and the setting of flexible spiral blades can promote the uniformity of biofilm formation on the packing and improve the treatment efficiency. At the same time, the grille box, aeration box, sedimentation box, etc. work together to achieve multi-stage treatment of sewage and further improve the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of this application; Figure 2 is a schematic diagram of the structure of the wetland box proposed in this application; Figure 3 is a schematic diagram of the structure of the wetland box and the purification mechanism proposed in this application; Figure 4 is an exploded schematic diagram of the purification mechanism proposed in this application; Figure 5 is an exploded schematic diagram of the side plate and its components proposed in this application; Figure 6 is a schematic diagram of the internal structure of the wetland box proposed in this application; Figure 7 is Figure 6 an enlarged schematic diagram of part A in Figure 8 is Figure 6 an enlarged schematic diagram of part B in Figure 9 is a schematic diagram of the sectional structure of the wetland box proposed in this application; Figure 10 is a schematic diagram of the transverse sectional view of the purification mechanism proposed in this application; Figure 11 is Figure 10 an enlarged schematic diagram of part C in Figure 12 is a schematic diagram of the structure of the packing column proposed in this application; Figure 13 is an exploded schematic diagram of the packing column proposed in this application; Figure 14 is a schematic diagram of the sectional structure of the packing column proposed in this application; Figure 15 is a schematic diagram of the structure of the ecological packing regeneration system proposed in this application; Figure 16 is a schematic diagram of the in-situ packing regeneration system proposed in this application.

[0016] Description of reference numerals in the figure: 1. Wetland system; 101. Sampling point 1; 102. Sampling point 2; 103. Sampling point 3; 104. Sampling point 4; 11. Grid box; 12. Aeration box; 13. Wetland box; 131. Wetland box 1; 132. Wetland box 2; 133. Wetland box 3; 14. Sedimentation box; 15. Discharge box; 16. Water distribution box; 161. Water distribution nozzle 2. In-situ filler regeneration system; 201. Sampling point 5; 21. Aeration pump; 22. Gas flowmeter 1; 23. Control switch 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 guide pipe 1; 341. Liquid flowmeter 1; 35. Water guide pipe 2; 351. Liquid flowmeter 2; 36. Air compressor pump; 361. Air guide pipe; 37. Lift pump 4. Purification mechanism; 41. Side plate; 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. Actuating rod; 461. Actuating groove 5. Filler column; 51. Lower rotating seat; 511. Release port; 52. Columnar reticulated shell; 53. Shaft rod; 531. Tapered plug; 532. Spline groove; 54. Flexible spiral blade; 55. Upper rotating seat; 551. Pin column; 552. Connection port; 56. Return spring; 57. Sealing side rod 6. Spline shaft; 61. Tension spring; 62. Electromagnetic ring Detailed implementation mode

[0017] In the embodiment, the technical solution of the present application will be clearly and completely described in combination with the accompanying drawings of the specification. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0018] In the embodiment, refer to Figure 1 - Figure 16 , this embodiment provides an assembled integrated sewage treatment equipment for environmental emergency treatment, which can change the orientation of the filler column 5 facing the sewage side by rotating the filler column 5, meet the anti-blocking function of the filler column 5 in sewage treatment, and increase the film-forming efficiency of sewage treatment.

[0019] Specifically, please refer to Figure 1 - Figure 10, the present invention includes a prefabricated stepped 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, and a purification mechanism 4 is arranged inside the wetland box 13, which includes an inner box 43. The purification mechanism 4 further includes a side plate 41 for driving the filler column 5 to rotate synchronously by 180° and reciprocally deflect at a small angle; A number of parallel and inclined filler columns 5 are arranged inside the inner box 43. The filler column 5 includes a columnar reticulated shell 52, and fillers are arranged inside the columnar reticulated shell 52. Please refer to Figure 11 and Figure 13 , to maintain an effective sewage flow gap between the filler columns 5, the upper opening of the columnar reticulated shell 52 is in a straight groove shape and the lower opening is circular. In the present invention, by arranging a number of filler columns 5 at equal intervals, a three-dimensional filler stacking method is formed. Compared with the traditional bottom-laid filler stacking method, the effective film-forming area of the filler is larger and the sewage treatment efficiency is higher. Both ends of the columnar reticulated 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 tangent to each other, and two groups of symmetrically arranged sealing side rods 57 are fixed between the upper rotating seat 55 and the lower rotating seat 51.

[0020] Please refer to Figure 11 and Figure 12 , to maintain the sealing performance when the adjacent sealing side rods 57 are in contact with each other, the sides of the two groups of sealing side rods 57 away from each other are in an arc shape and are coaxially arranged with the axis of the lower rotating seat 51. The outer wall of the sealing side rod 57 is coated with a rubber layer, the circular ring radius of the sealing side rod 57 is equal to the radius of the lower rotating seat 51, and the arrangement spacing of the filler columns 5 is equal to the diameter of the lower rotating seat 51.

[0021] Please give priority to referring to Figure 13 , to solve the problem of reduced film-forming rate after the fillers are stacked inside the columnar reticulated shell 52, a shaft rod 53 is rotatably connected between the lower rotating seat 51 and the upper rotating seat 55 in this application. A flexible spiral blade 54 is arranged on the shaft rod 53. The bottom of the inner box 43 is detachably connected with a collecting bottom box 45, and a spline shaft 6 for restricting the rotation of the shaft rod 53 is fixed on the collecting bottom box 45; This application adopts the method of rotating the flexible spiral blade 54 by means of the fixed shaft rod 53 to drive the packing in the driven columnar reticulated shell 52, so as to achieve the purpose of improving the film hanging efficiency. The specific method is that through the small-range reciprocating drive of the purification mechanism 4, the packing column 5 is driven to reciprocate and deflect at a small angle on the premise that the adjacent sealing side rods 57 are in contact and tangent to each other. The flexible spiral blade 54 is used to gently stir the packing in the driven columnar reticulated shell 52, which can make the sewage fully contact with the microorganisms on the surface of the packing, accelerate the mass transfer process of pollutants from the sewage to the surface of the microorganisms, and thus improve the removal efficiency of pollutants; in the case of treating high-concentration sewage or rapidly degrading pollutants, the stirring state can better meet the treatment requirements. At the same time, appropriate stirring can avoid the overgrowth of biofilms and the accumulation of suspended substances, maintain the porosity of the packing layer, prevent the occurrence of blockage phenomena. At the same time, stirring can also continuously update the biofilm on the surface of the packing and maintain the activity of microorganisms; Please refer to Figure 5 , in which, to meet the driving function of the side plates 41, two groups of side plates 41 are symmetrically arranged. The bottom of the side plates 41 is provided with slide rails 412. The side plates 41 are slidably connected to the top of the wetland box 13 through the slide rails 412. The side plates 41 are driven by cylinders to reciprocate. A number of actuating rods 46 are fixed between the two groups of side plates 41. A number of equally spaced actuating grooves 461 are provided on the actuating rods 46. The top of the upper rotating seat 55 is fixed with pin columns 551 corresponding to the actuating grooves 461. Through the cooperation of the pin columns 551 and the actuating grooves 461, multiple packing columns 5 are synchronously driven to flip. Since the mesh holes on the water inlet side of the columnar reticulated shell 52 are easily blocked by impurities larger than the mesh holes, and the impurities smaller than the mesh holes enter the inside of the columnar reticulated shell 52. To avoid the phenomenon of unsmooth sewage flow after blockage, the side plates 41 can drive the packing column 5 to rotate a certain angle so that the water-back side of the packing column 5 faces the water inlet side of the sewage. At this time, through the scouring of the sewage, the blockage can be detached from the mesh holes and discharged into the next box through the gap opened by the packing column 5; At the same time, since the packing on the side of the packing column 5 facing the water first contacts the sewage and has a high film hanging efficiency, while the packing on the side facing away from the sewage has a low film hanging efficiency. To balance the film hanging efficiency of the packing in the packing column 5, the side plates 41 can regularly drive the packing column 5 to perform a 180° flipping action to improve the film hanging uniformity of the packing column 5 and improve the sewage treatment efficiency.

[0022] A plant support 42 is also provided between the two groups of side plates 41. A support rail 411 for carrying the plant support 42 is provided on the side plates 41. Aquatic plants can be planted on the carrying plant support 42. Cooperating with the packing column 5, the synergistic purification effect of plants-packing-microorganisms on water body nitrogen and phosphorus pollutants can be realized.

[0023] Please refer to Figure 6 - Figure 10, upper and lower sealing plates 431 and 432 are respectively fixed on the upper and lower sides of the inner box 43. 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 planes of the upper sealing plate 431 and the lower sealing plate 432. To improve the sealing performance of the rotating 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. A lower sealing bearing 433 is fixed on the lower sealing plate 432, and the lower rotating seat 51 is rotatably connected to the lower sealing bearing 433. Return 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 arrangement of the return springs 56, when the side plate 41 no longer drives the packing column 5 to deflect, the packing column 5 can automatically reset by using the return springs 56. At the same time, when the sewage flow rate in the wetland box 13 is too large, the water flow impacts the surface of the packing column 5, which can also cause the packing column 5 to deflect at a small angle, achieving the purpose of automatically disturbing the packing.

[0024] Please refer to Figure 9 , water outlets 4311 and water inlets 4312 are respectively arranged on both sides of the top of the upper sealing plate 431. The water inlet 4312 is lower than the water outlet 4311. Since the applied wetland system 1 adopts an assembled stepped assembly method, when the boxes are connected by a water drop method, the sewage entering from the water inlet 4312 gradually passes through the packing column 5 in the inner box 43 and is discharged through the water inlet 4312, achieving the purpose of intercepting nitrogen and phosphorus in the sewage.

[0025] Please refer to Figure 7 , to timely release the impurities accumulated in the packing column 5, a release port 511 is arranged at the bottom of the lower rotating seat 51. A conical plug 531 matching the release port 511 is fixed at the bottom of the shaft rod 53. A spline groove 532 matching the spline shaft 6 is also fixed at the bottom of the shaft rod 53; an electromagnetic ring 62 is fixed at the bottom of the spline shaft 6. A tension spring 61 is fixed between the electromagnetic ring 62 and the conical plug 531. The electromagnetic ring 62 has a magnetic attraction force on the conical plug 531 under the condition of being energized. When it is necessary to release the impurities in the packing column 5, the electromagnetic ring 62 is energized to adsorb the conical plug 531 to move downward, so that a gap smaller than the diameter of the packing particles is formed between the conical plug 531 and the release port 511, and the impurities fall through this gap to the collection bottom box 45. Furthermore, please refer to Figure 8, a connection port 552 is also provided at the top of the upper rotating seat 55. On the one hand, high-pressure clean water can be connected through the connection port 552. In cooperation with the downward movement of the conical plug 531, the packing in the packing column 5 can be flushed to further maintain the porosity of the packing layer and the impurity removal efficiency. On the other hand, when the packing is difficult to be maintained by external means, the electromagnetic ring 62 is energized to adsorb the conical plug 531 to move 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.

[0026] Please refer to Figure 1 , the complete wetland system 1 further includes a grille box 11, an aeration box 12 and a sedimentation box 14. The grille 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 are arranged in a stepped manner. The wetland system 1 further 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 grille box 11; the wetland box 13 includes a first wetland box 131, a second wetland box 132 and a third wetland box 133.

[0027] Assemble the grille box 11, the aeration box 12, the wetland box 13 including the first wetland box 131, the second wetland box 132 and the third wetland box 133 and the sedimentation box 14 in a way that they are connected in sequence along the water inlet direction and are in a stepped shape, and connect the pipelines to the discharge box 15 and the water distribution box 16. Install the water distribution nozzles 161 in the water distribution box 16. Install the inner box 43 in the wetland box 13, fix the upper sealing plate 431 and the lower sealing plate 432, and install the upper sealing bearing 434 and the lower sealing bearing 433. Install the upper rotating seat 55 and the lower rotating seat 51 of the packing column 5 on the upper sealing bearing 434 and the lower sealing bearing 433 respectively, and connect the return spring 56. Install the flexible spiral blade 54 on the shaft rod 53, and rotatably connect the shaft rod 53 with the lower rotating seat 51 and the upper rotating seat 55. Install the collection bottom box 45, and connect the spline shaft 6 with the spline groove 532 at the bottom of the shaft rod 53. Install the actuator rod 46, the support rail 411 and the slide rail 412 on the side plate 41, install the side plate 41 on the top of the wetland box 13 through the slide rail 412, and connect the cylinder so that the cylinder can drive the side plate 41 to reciprocate. Install the plant support 42 between the side plates 41.

[0028] Sewage enters the grid box 11 from the water distribution tank 16 through the water distribution nozzles 161, and after preliminary filtration by the grid, it enters the aeration tank 12. Aeration treatment is carried out in the aeration tank 12, and then it flows into the wetland box 13; the sewage is treated by the purification mechanism 4 in the wetland box 13. Through the filtration of the packing column 5 and the agitation of the flexible spiral blade 54, impurities and pollutants are intercepted and decomposed; when it is necessary to clean the impurities in the packing column 5, the electromagnetic ring 62 can be controlled to be energized to attract the conical plug 531, open the release port 511, and discharge the collected impurities. The side plate 41 is driven by a cylinder to move regularly, so that the execution groove 461 on the execution rod 46 drives the pin column 551, so that the packing column 5 rotates synchronously by 180°, changing the filtration path of the sewage and improving the filtration effect.

[0029] In the emergency of sewage treatment, in order to quickly formulate the best sewage treatment plan, the experimental model of the wetland system 1 can be quickly built on site to study and analyze the purification effect of the wetland on nitrogen and phosphorus in water bodies. The factors such as influent concentration, hydraulic retention time, aeration volume, etc. are selected as the main factors affecting the purification effect of the wetland. According to the water quality characteristics of the actual river, five indicators including total nitrogen, ammonia nitrogen, nitrate nitrogen, total phosphorus, and phosphate are selected as the monitoring indicators.

[0030] First, single-factor experiments were carried out under the condition of continuous and uniform influent to explore the transfer laws of nitrogen and phosphorus in the wetland system 1 under different hydraulic retention times, different aeration volumes, and different influent concentrations; then, based on the orthogonal experiment, the sensitivity analysis of nitrogen and phosphorus removal in the wetland system 1 was carried out to obtain the primary and secondary relationships of the factors affecting the nitrogen and phosphorus interception efficiency and the optimal combination of the orthogonal experiment, and quickly obtain the optimal operating condition data of the wetland.

[0031] Specifically, water distribution nozzles 161 are arranged in the water distribution tank 16. To explore the interception law of nitrogen and phosphorus in the wetland system 1, referring to the principle of uniform distribution of points along the way, a sampling point 101 is provided on the connecting pipeline between the grid box 11 and the aeration tank 12, and the water quality is equivalent to the water quality of the river. A sampling point 102 is provided on the connecting pipeline between the first wetland box 131 and the second wetland box 132, and a sampling point 103 is provided on the connecting pipeline between the second wetland box 132 and the third wetland box 133. A sampling point 104 is provided on the connecting pipeline between the sedimentation tank 14 and the discharge tank 15.

[0032] The collection time of the water quality samples is uniformly specified between 8:00 and 9:00 in the morning, and the sampling period is the 0th, 1st, 3rd, 5th, and 7th days after the aquatic plants grow stably (the sampling on the 0th day is the initial water sample); a diversion pipe is provided at the sampling point for collecting water samples. Each time 600 mL of water samples are collected, and then they are immediately transferred to a pre-cleaned 600 mL polyethylene bottle and immediately tested.

[0033] The main analysis indicators of this experiment include NH4 +-N, TN, TP, COD, etc. After the water samples obtained daily are filtered through a 0.45um filter membrane, the parameters are measured. The measurement methods of the main water quality indicators are shown in Table 1.

[0034]

[0035] After the wetland system 1 operates stably, the hydraulic retention time is controlled at 24h, and three gradients of no aeration, low aeration, and high aeration are set, which are 0m 3 / h, 0.05m 3 / h, 0.2m 3 / h. The influent flow rate is controlled at 9.45L / h. The influent with the configured nitrogen and phosphorus concentrations (TN: 3.0mg / L, TP: 0.06mg / L) is introduced into the constructed wetland. Sampling sections are set at the inlet of the wetland system 1, the outlet of wetland tank 131, the outlet of wetland tank 132, and the outlet of the wetland system 1, with a total of 4 sampling points. 500mL of water samples are collected at the 4 fixed sampling points on the 0th day, 1st day, 3rd day, 5th day, and 7th day respectively. The monitoring indicators mainly include ammonia nitrogen, total nitrogen, total phosphorus, etc., to test the nitrogen and phosphorus interception efficiency of the wetland system 1 under different aeration conditions and determine the optimal aeration conditions.

[0036] After the wetland system 1 operates stably, the hydraulic retention time is controlled at 24h, and the influent flow rate is controlled at 9.45L / h. Under the condition of low aeration (0.05m 3 / h), under three influent conditions of high (TN: 7.0mg / L, TP: 0.7mg / L), medium (TN: 4.5mg / L, TP: 0.35mg / L), and low (TN: 3.0mg / L, TP: 0.06mg / L) nitrogen and phosphorus concentrations, sampling sections are set at the inlet of the wetland system 1, the outlet of wetland tank 131, the outlet of wetland tank 132, and the outlet of the wetland system 1, with a total of 4 sampling points. 500mL of water samples are collected at the 4 fixed sampling points on the 0th day, 1st day, 3rd day, 5th day, and 7th day respectively. The monitoring indicators mainly include ammonia nitrogen, total nitrogen, total phosphorus, etc., to test the nitrogen and phosphorus interception efficiency of the wetland system 1 under different influent concentrations and determine the optimal influent concentration.

[0037] Since the initial nitrogen and phosphorus concentrations of the influent, hydraulic retention time, and aeration volume have a great influence on the nitrogen and phosphorus interception of the waterfront wetland, three indicators should be selected as research factors in the experiment. According to the L9(3 4 ) orthogonal table, three factors of influent concentration (A), hydraulic retention time (B), and aeration volume (C) are selected to design an orthogonal experiment for nitrogen and phosphorus removal in the wetland system 1. The three-factor and three-level design table is shown in Table 2. Before running the experiment, the corresponding aquatic plants are planted in the stepped wetland model in advance and grow for about 20 days.

[0038]

[0039] The configuration reagents for river pollutants are glucose, sodium chloride, potassium dihydrogen phosphate, sodium bicarbonate, calcium chloride, ferric chloride, and magnesium sulfate. Before the test run, the solution is prepared, stirred evenly, and then poured into the chemical dosing water tank (350L). Under each set of test conditions, the test runs for 7 days. Before running the next set of tests, it is rinsed and regenerated with tap water for 2 days to ensure the desorption of nitrogen and phosphorus in the wetland. Samples of the concentrations of different forms of nitrogen and phosphorus pollutants in the wetland system 1 model are taken and monitored at 0h, 24h, 72h, 120h, and 168h during the test period, and a sensitivity analysis of the nitrogen and phosphorus removal factors in the wetland system 1 is carried out.

[0040] To conduct an experiment on the biological regeneration efficiency of the packing in the wetland system 1, the present invention also provides an ecological packing regeneration system 3 for the biofilm formation test of the biological filter column. Specifically, please refer to Figure 15 , the ecological packing regeneration system 3 includes a first filter column 31, a second filter column 32, and a water distribution tank 33. A water pump 331 is installed inside the water distribution tank 33. The output end of the water pump 331 is communicated with the bottom of the second filter column 32 through a first water conduit 34. A first liquid flowmeter 341 is provided on the first water conduit 34. A lift pump 37 is also provided between the second filter column 32 and the first filter column 31. The top of the second filter column 32 is communicated with the output end of the lift pump 37 through a second water conduit 35. A second liquid flowmeter 351 is provided on the second water conduit 35. The output end of the lift pump 37 is communicated with the bottom of the first filter column 31. The bottom of the first filter column 31 is discharged to the outside through a pipeline. An air compressor 36 is also provided on one side of the second filter column 32. The output end of the air compressor 36 is communicated with the bottoms of the first filter column 31 and the second filter column 32 respectively through an air conduit 361. The first filter column 31 and the second filter column 32 are filled with packing. Sampling points 301, 302, and 303 are respectively provided from bottom to top in the second filter column 32, and sampling points 304, 305, and 306 are respectively provided from bottom to top in the first filter column 31; The biofilm formation test of this application adopts the activated sludge biofilm formation method, and the inoculated sludge comes from the sludge thickening tank of the sewage treatment plant.

[0041] The experimental device for the biological filter column regeneration is a two-stage aerated biological filter column. Both the first filter column 31 and the second filter column 32 are made of plexiglass columns, with a column height of 2.0m and an inner diameter of 0.3m. The second filter column 32 is filled with 1.4m high of packing, and the first filter column 31 is filled with 1.6m high of packing. Three sampling points, upper, middle, and lower, are respectively set in the second filter column 32 and the first filter column 31 according to the packing column. The layout of the experimental device and sampling points during the biofilm formation stage is as Figure 15 shown in the height.

[0042] The dosage of specific experimental drugs and the experimental steps are as follows: 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 are used to prepare a mixed liquid medicine by adjusting the pH value to 7.5 - 8 with sodium bicarbonate, and a trace solution is added according to the ratio of 2 m1 per 1 L of the mixed liquid medicine; (Note: Preparation of the trace solution (g / L): EDTA 50.0 g / L; ZnSO4 2.20 g / L; C a Cl2 5.50 g / L; MnCl2·4H2O 5.06 g / L; FeSO4·7H2O 5.00 g / L; (NH4)Mo7O2·4H2O 1.10 g / L; CuSO4·5H2O 1.57 g / L; CoCl2·6H2O 1.61 g / L; pH = 7.0).

[0043] ② Experimental steps: Put the above drugs into a 1000 L water preparation tank according to the dosage. After stirring evenly, layer and fill about 5 kg of concentrated sludge and zeolite into the filter column 32. Under the conditions of an initial organic load of 4.4 kgCOD / m 3 ·d, a total nitrogen concentration of 14.65 mg / L, an aeration rate of 0.5 L / min, and an influent flow rate of 60 L / h, run in circulation for 5 days to conduct a biofilm formation test. Take water samples from 6 sampling points every 24 hours and measure the concentrations of COD and ammonia nitrogen respectively.

[0044] The criteria for judging successful biofilm formation are: the removal rate of NH4 + -N reaches about 60%, and the COD removal rate reaches about 50%.

[0045] After the biofilm formation is completed, biological regeneration of the packing is carried out. The hydraulic load is increased to 1 m 3 / h, the organic load is 4.4 kgCOD / m 3 ·d, the aeration rate is maintained at 0.5 mL / min, and the effluent is directly discharged. Set 3 sampling points from top to bottom in filter column 32 and filter column 2 respectively. Take water samples in layers every 8 hours to measure the concentration of ammonia nitrogen. Take a certain amount of packing from the upper layer of the two filter columns every 12 hours, quickly wash the biological film on the surface of the packing with distilled water and dry it, then weigh 2 g and put it into a conical flask containing 150 m1 of a solution with an ammonia nitrogen concentration of 5 mg / L, and measure the ammonia nitrogen concentration of the solution after constant temperature oscillation at 150 r / min for 24 h, calculate the adsorption amount of ammonia nitrogen by the packing, compare it with the ammonia nitrogen adsorption amount under the same conditions of fresh packing, and calculate the packing regeneration rate.

[0046] For the 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 flowmeter 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.

[0047] Preparation of microbial adsorbent: The preparation test of the microbial adsorbent is mainly carried out through the in-situ filler regeneration system 2. The test device is as Figure 16 shown. Add 2 kg of ceramsite pre-washed with distilled water, and then add 10 L of a mixed bacterial solution of Bacillus megaterium and nitrifying bacteria.

[0048] The preparation of the mixed bacterial solution is to dissolve 2.5 g of solid particles of Bacillus megaterium and 2.5 g of nitrifying bacteria particles in 10 L of distilled water, and the activation time is 6 h. After the activation is completed, a certain amount of microbial culture solution is added to the water body. The dosage of specific experimental drugs is as follows: glucose 400 mg / L, ammonium chloride 19.10 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. Use sodium bicarbonate to adjust the pH value of the solution to 7.5 - 8. In addition, 2 mL of trace solution needs to be added. The preparation of the trace solution is mainly as follows. Preparation of trace solution (g / L): EDTA 15 g / L; H3BO4 0.014 g / L; CuSO4·5H2O 0.25 g / L; MnCl2·4H2O 0.99 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.

[0049] Add the prepared microbial adsorbent solution to the in-situ filler regeneration system 2, adjust the aeration volume of the aeration pump 21 to 0.05 L / min, and continuously operate for 5 d for artificial biofilm formation treatment. During the biofilm formation period, three sampling points, high, medium, and low, are set at different heights of the column, and water samples are taken every other day to monitor the concentrations of ammonia nitrogen, total phosphorus, and COD in the water body. The evaluation criteria for the successful preparation of the microbial adsorbent: NH4 + -N removal rate reaches about 60%, and COD removal rate reaches about 50%.

[0050] In-situ regeneration test design of wetland fillers: The prepared microbial adsorbent is put into the aeration tank 12 of wetland system 1 for in-situ regeneration of the fillers in wetland system 1. The in-situ regeneration of fillers mainly ensures that microorganisms adhere to the surface of the internal fillers in the wetland for desorption. The water body containing two kinds of bacterial solutions enters the sedimentation tank 14 along the stepped wetland through the pretreatment system, and then flows back from the sedimentation tank 14 to the water distribution tank 16 to form a complete circulation system.

[0051] Wetland system 1 is operated for 4 - 7 days for biofilm formation. Water intake ports are set at the outlets of the three stepped wetlands respectively to monitor the changes of nitrogen and phosphorus in the water body during the filler regeneration process. After the biofilm formation is completed, the filler regeneration test is started. During the filler regeneration process, the water body enters the sedimentation tank along the stepped wetland through the pretreatment system and then directly enters the river system from the sedimentation tank. The regeneration test lasts for 30 days. The regenerated fillers in each stepped wetland are taken out every 0 days, rinsed with distilled water to remove the surface biofilm, and then the adsorption test is carried out to measure their adsorption capacity. The influent concentration is the same as that during the biofilm formation period, the influent flow rate is 40 L / h, and the aeration volume is controlled at 500 mL / min.

[0052] Through laboratory tests, the in-situ regeneration tests of saturated fillers are carried out by two methods: the regeneration of ecological filler filter columns and the in-situ regeneration of wetlands, respectively, to explore the regeneration performance of saturated fillers. First, an ecological filler filter column is constructed to explore the regeneration effect of biological fillers under dynamic conditions of continuous water inflow, and the microbial diversity during the regeneration process is observed and analyzed to preliminarily reveal the regeneration mechanism of biological fillers from the microscopic structure. Then, the wetland is subjected to biofilm formation treatment by putting the self-prepared microbial adsorbent, and the migration and transformation laws of nitrogen and phosphorus and the regeneration effect of saturated fillers during the in-situ regeneration process of the assembled stepped wetland system 1 are explored under the condition of continuous water inflow.

[0053] This application adopts an assembled design, and the systems can be quickly connected and installed, greatly shortening the deployment time in emergency scenarios, being able to be quickly put into use, and meeting the urgent requirements of environmental emergency treatment for time; the purification mechanism in the wetland system can effectively intercept and filter impurities and pollutants in sewage through a unique filler column design; the rotation structure of the filler column and the setting of flexible spiral blades can promote the uniformity of biofilm formation on the fillers and improve the treatment efficiency; at the same time, the grille box, aeration tank, sedimentation tank, etc. work together to achieve multi-stage treatment of sewage and further improve the sewage treatment effect. The above is only the best implementation mode adopted by this application in combination with the current actual needs, but the protection scope of this application is not limited thereto.

Claims

1. An assembled integrated sewage treatment equipment for environmental emergency treatment, characterized by: The invention comprises a prefabricated step-assembly wetland system (1), 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) has a purification mechanism (4) built therein, and the wetland system (1) comprises an inner box (43), wherein a plurality of parallel and inclined filler columns (5) are arranged in the inner box (43), wherein the filler columns (5) comprise a columnar lattice shell (52), wherein the columnar lattice shell (52) has filler built therein, and wherein upper and lower ends of the columnar lattice shell (52) are respectively fixed with The rotating seat (55) and the lower rotating seat (51) are arranged tangentially with the sides adjacent to the upper rotating seat (55), and two groups of symmetrically arranged sealing side rods (57) are fixed between the upper rotating seat (55) and the lower rotating seat (51), and the two groups of sealing side rods (57) are arranged in an arc shape on the sides away from each other and are coaxially arranged with the axis of the lower rotating seat (51), and 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 comprises a side plate (41) for driving the packing column (5) to synchronously rotate 180° and reciprocate at a small angle.

2. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1 is characterized in that: 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 inclined; 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); and 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).

3. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 2 is characterized in that: 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).

4. 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 rod (53) is fixed with a conical plug (531) matching the release port (511), and the bottom of the shaft rod (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 tension spring (61) is fixed between the electromagnetic ring (62) and the conical plug (531), and the electromagnetic ring (62) has a magnetic attraction force on the conical plug (531) when power is on.

5. 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).

6. 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, a plurality of actuating rods (46) are fixed between the two groups of side plates (41), a plurality of actuating grooves (461) arranged at equal intervals are provided on the actuating rods (46), 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).

7. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 6 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.

8. 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 arranged in sequence and in a stepped manner along a water inlet direction; the wetland system (1) further comprises a discharge box (15) connected to an output end of the sedimentation box (14) and a water distribution box (16) connected to an input end of the grid box (11); The wetland box (13) comprises wetland box one (131), wetland box two (132) and wetland box three (133).

9. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 8 is 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 grid 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).

10. The assembled integrated sewage treatment equipment for environmental emergency treatment according to claim 1, characterized in that: The ecological filler regeneration system (3) comprises 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) via a water guide pipe 1 (34). A liquid flow meter 1 (341) is provided on the water guide 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 output end of the lifting pump (37) via a water guide pipe 2 (35). A liquid flow meter 2 (351) is provided on the water guide pipe 2 (35). The output end of the lifting pump (37) is connected to the bottom of the filter column 2 (32). The outlet end is connected to the bottom of the first filter column (31), and the bottom of the first filter column (31) is discharged to the outside through a pipeline. An air pressure pump (36) is also provided on one side of the second filter column (32). The output end of the air pressure pump (36) is connected to the bottom of the first filter column (31) and the bottom of the second filter column (32) through an air guide pipe (361). The first filter column (31) and the second filter column (32) are filled with fillers. The second filter column (32) is provided with a sampling point 1 (301), a sampling point 2 (302) and a sampling point 3 (303) from bottom to top, and the first 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. 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 1 (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).

Images