CN114149135B

CN114149135B - Sewage regeneration treatment system

Info

Publication number: CN114149135B
Application number: CN202111288643.7A
Authority: CN
Inventors: 许志溪; 林德生; 刘涛; 王小锋; 林少伟; 潘伟敏
Original assignee: Fujian Huayuan Construction Engineering Group Co ltd
Current assignee: Fujian Huayuan Construction Engineering Group Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2024-02-23
Anticipated expiration: 2041-11-02
Also published as: CN114149135A

Abstract

The application discloses a sewage regeneration treatment system, which comprises a sedimentation tank, a biochemical tank, a secondary sedimentation tank and a filtration and disinfection tank, wherein the biochemical tank comprises an anoxic tank, an anaerobic tank and an aerobic tank; be equipped with a plurality of deflector along vertical direction dislocation set in the good oxygen pond, the deflector slope sets up, and two upper and lower adjacent deflector inclines towards opposite direction, and the lower side that is located the deflector of top covers the edge of the higher side of the adjacent deflector of below, and keeps the interval, and good oxygen pond's outside is equipped with the aeration machine, and the aeration machine is connected with the aeration pipe that stretches into good oxygen pond bottom, and the lower extreme bending extension of aeration pipe is between the diapire of minimum deflector and good oxygen pond. The application has the effect of improving the dissolved oxygen efficiency in the aeration process.

Description

Sewage regeneration treatment system

Technical Field

The application relates to the technical field of sewage treatment, in particular to a sewage regeneration treatment system.

Background

Along with the development of social economy, social production and life bring a large amount of sewage, the untreated sewage contains a large amount of organic matters, when the organic pollutant load is too high, dissolved oxygen in the water containing the sewage is easy to consume in the degradation process of the organic matters, the water containing the sewage gradually becomes eutrophic, the water body is blackened and odorous, and the surrounding environment is seriously influenced.

In the prior art, when sewage is treated, organic matters in the sewage are decomposed by utilizing microorganisms, oxygen which is required to be consumed when the microorganisms decompose the organic matters is supplied through an aerator, but bubbles generated by aeration of the sewage by the aerator quickly float on the water surface, and the dissolved oxygen efficiency is lower.

Disclosure of Invention

In order to solve the problem that the efficiency of dissolved oxygen of bubbles generated by aeration in sewage treatment is lower, the application provides a sewage regeneration treatment system.

The sewage regeneration treatment system provided by the application adopts the following technical scheme:

the sewage regeneration treatment system comprises a sedimentation tank, a biochemical tank, a secondary sedimentation tank and a filtration and disinfection tank, wherein the biochemical tank comprises an anoxic tank, an anaerobic tank and an aerobic tank; be equipped with a plurality of deflector along vertical direction dislocation set in the good oxygen pond, the deflector slope sets up, upper and lower adjacent two the deflector inclines towards opposite direction, is located the top the lower side of deflector covers the lower adjacent the edge of the higher side of deflector, and keeps the interval, the outside in good oxygen pond is equipped with the aeration machine, the aeration machine is connected with the aeration pipe that stretches into good oxygen pond bottom, the lower extreme of aeration pipe is buckled and is extended to the lowest between the deflector with the diapire in good oxygen pond.

Through adopting above-mentioned technical scheme, the in-process that the aeration machine was carried out the aeration, the aeration machine blows out the bubble through the sewage in the aeration tank, the bubble produced between the bottom of the pool in aerobic tank and the deflector of the minimum, because the deflector slope sets up, when the bubble upwards floats, gradually upwards move along the lower surface slope of deflector, when the bubble breaks away from the higher side of deflector, the bubble receives the shielding effect of the adjacent deflector in top, make the bubble continue upwards move along the lower surface slope of the adjacent deflector in top, because the slope towards opposite direction between every adjacent upper and lower two deflectors, make the bubble upwards move along broken at the surface of water along broken line shape route in the aquatic, the bubble moves along broken line shape route, greatly increased the time that the bubble stayed in the aquatic, thereby increase the proportion that oxygen dissolved into in the sewage in the bubble, and then promote the dissolved oxygen efficiency of aeration process.

Optionally, the lower end of the aeration pipe is connected with a microporous aeration head.

Through adopting above-mentioned technical scheme, the micropore aeration head makes the bubble that the aeration machine aeration produced littleer, and the quantity is more, is favorable to promoting the area of contact of air and sewage that the aeration machine blown out to promote dissolved oxygen efficiency.

Optionally, a heating box is connected between the aerator and the aeration pipe, and a heating rod is arranged in the heating box.

By adopting the technical scheme, the heating box is arranged to heat the air blown out by the aerator, after the air is heated, the air bubbles formed by aeration and sewage can be subjected to heat exchange to heat the sewage, and under colder weather conditions, the activity of microorganisms can be improved after the sewage is heated, so that the efficiency of decomposing organic matters in the sewage by the microorganisms is improved; on the other hand, after the air is heated, the dissolution efficiency of the oxygen in the sewage is further improved.

Optionally, the deflector is parallel to the both sides of self incline direction and is equipped with the curb plate respectively, the curb plate is located the lower surface of deflector.

Through adopting above-mentioned technical scheme, two curb plates that are located the deflector lower surface can hinder the bubble and deviate from the lower surface of deflector from the direction of perpendicular to deflector incline direction, make the bubble upwards move along the incline direction of deflector as far as possible to guarantee as far as possible that the bubble moves along the broken line route in sewage.

Optionally, the guide plate is gradually inclined upwards from the middle to a direction approaching to the two side plates.

Through adopting above-mentioned technical scheme, the deflector is from the centre to the direction that is close to two curb plates upwards slope gradually, when making the bubble remove along the lower surface of deflector, tends to the both sides diffusion of deflector to be favorable to making the bubble disperse in sewage, and then be favorable to promoting the degree of consistency of sewage dissolved oxygen.

Optionally, the lowest point of the side plate of the guide plate located above is higher than the highest point of the guide plate adjacent below.

Through adopting above-mentioned technical scheme, the minimum point of the curb plate of deflector that is located the top is higher than the highest point of the adjacent deflector of below, receives the hindrance effect of the curb plate of the adjacent deflector of top after the bubble breaks away from the lower surface of deflector from the higher side of deflector to make the bubble pass through to the adjacent deflector of top from the deflector of below as smoothly as far as possible, ensure that the bubble removes the come-up along the broken line shape route.

Optionally, the sedimentation tank with biochemical pond links into an integrated entity, the sedimentation tank with be equipped with the baffle between the biochemical pond, baffle upper portion is equipped with the overflow breach, the baffle is equipped with along vertical plane cover the filter of overflow breach.

By adopting the technical scheme, the water precipitated in the sedimentation tank flows into the biochemical tank through the overflow notch, and the filter piece is arranged on the partition plate, so that floating sundries accumulated in the sedimentation tank can be further filtered.

Optionally, the two side plates located on the same guide plate are gradually far away from each other from top to bottom.

Through adopting above-mentioned technical scheme, under the prerequisite that each deflector size specification is the same, two curb plates of same deflector are from last down separating each other gradually, make the interval between two curb plates from last down increase gradually to make two curb plates dodge below adjacent deflector and both sides board on it, with avoiding interfering, on this basis, each deflector can make the same size specification, the processing of being convenient for.

Optionally, the filter element includes the frame, the upside of frame rotates respectively and is connected with the pivot, the pivot level sets up, two jointly around being equipped with many silk threads between the pivot, the silk thread follows the axial equidistance evenly distributed of pivot, two the pivot all is equipped with and is used for fixing a position the annular of silk thread, be located the upside the one end of pivot is equipped with the rotating handle.

By adopting the technical scheme, the silk threads are uniformly distributed at equal intervals, so that floating sundries in the sedimentation tank can be prevented from entering the biochemical tank, and the filtering effect is exerted; the ring grooves limit the axial movement of the silk threads along the rotating shaft, so that the adjacent silk threads are kept at uniform equidistance; after the filter is used for a long time, floating sundries are attached to the silk thread, water passing efficiency is affected, the rotating shaft above the filter is driven to rotate by the rotating handle, the rotating shaft drives the silk thread to rotate in a circulating mode, and when the silk thread rotates in a circulating mode, the sundries attached to the silk thread can be scraped off by the annular groove, so that the silk thread is kept clean.

Optionally, the outer frame is provided with an adjusting assembly, the adjusting assembly comprises an adjusting plate and an adjusting screw, the adjusting plate is of a long rectangular structure, the width of the adjusting plate is larger than the bottom diameter of the groove, the length direction of the adjusting plate is parallel to the rotating shaft, the adjusting plate sequentially passes through the surrounding area of each wire along the length direction of the adjusting plate, two ends of the adjusting plate are fixedly provided with rotating shafts, and the two rotating shafts are respectively connected with the outer frame in a rotating way; the adjusting screw is in threaded connection with the upper portion of frame, adjusting screw with the axis of rotation is different to be faced perpendicularly, adjusting screw's lower extreme passes the regulating plate, the regulating plate is equipped with and is used for dodging adjusting screw dodges the breach, adjusting screw's lower extreme threaded connection has two stoppers, two the stopper is located respectively the both sides of regulating plate.

By adopting the technical scheme, as the width of the adjusting plate is larger than the bottom diameter of the annular groove, the edges of the two long sides of the adjusting plate can be abutted with the silk thread; when the outer frame of the adjusting bolt is in spiral rotation, the adjusting bolt can drive the adjusting plate to rotate around the rotation shaft through the two limiting blocks, so that the width dimension of the projection of the adjusting plate on the horizontal plane is changed, the adjusting plate has the function of stretching and tensioning on two vertical edges of the silk thread, and when the silk thread is deformed and loosened after being used for a long time, the adjusting bolt can be rotated to drive the adjusting plate to adjust and tension.

In summary, the present application includes at least one of the following beneficial technical effects:

under the guiding action of each guide plate, the bubbles generated by aeration move upwards in the water along a zigzag path until the bubbles break open on the water surface, and the bubbles move along the zigzag path, so that the stay time of the bubbles in the water is greatly increased, the proportion of oxygen dissolved in the bubbles into sewage is increased, and the oxygen dissolving efficiency in the aeration process is further improved;

through setting up two curb plates that are located the deflector lower surface, make two curb plates hinder the bubble to deviate from the lower surface of deflector from the direction of perpendicular to deflector incline direction, make the bubble upwards move along the incline direction of deflector as far as to guarantee as far as possible that the bubble moves along the broken line route in sewage.

Drawings

Fig. 1 is a schematic overall structure of the present embodiment.

Fig. 2 is a cross-sectional view taken along the direction A-A in fig. 1.

Fig. 3 is a schematic diagram for embodying the positional relationship between the guide plates in the present embodiment.

Fig. 4 is a schematic structural view of the filter element of the present embodiment.

Fig. 5 is a partially enlarged view at B in fig. 4.

Reference numerals illustrate: 1. a sedimentation tank; 11. a partition plate; 111. an overflow notch; 2. a biochemical pool; 21. an anoxic tank; 22. an anaerobic tank; 23. an aerobic tank; 3. a secondary sedimentation tank; 4. a filtering and sterilizing pond; 5. a guide plate; 51. a connecting column; 52. a side plate; 6. an aerator; 61. an aeration pipe; 62. a microporous aeration head; 7. a heating box; 71. a heating rod; 72. a controller; 73. a temperature sensor; 8. a filter; 81. an outer frame; 82. a rotating shaft; 821. a ring groove; 822. a rotating handle; 823. an adjustment assembly; 8231. adjusting a screw; 8232. an adjusting plate; 8233. a rotating shaft; 8235. a lock nut; 8236. a limiting block; 8237. avoiding the notch; 83. a silk thread; 9. and (3) a water pump.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a sewage regeneration treatment system. Referring to fig. 1, the sewage regeneration treatment system includes a sedimentation tank 1, a biochemical tank 2, a secondary sedimentation tank 31, and a filtration and disinfection tank 4; the sedimentation tank 1 and the biological tank are connected into a whole, a baffle 11 is arranged between the sedimentation tank 1 and the biological tank, and an overflow notch 111 is arranged at the upper part of the baffle 11; the biochemical tank 2 comprises an anoxic tank 21, an anaerobic tank 22 and an aerobic tank 23 which are sequentially and separately arranged along the direction away from the sedimentation tank 1.

The sewage after coarse filtration is discharged into the sedimentation tank 1 for sedimentation, the sewage after sedimentation overflows to the biochemical tank 2 through the overflow notch 111, the sewage is discharged into the secondary sedimentation tank 31 for sedimentation separation after biochemical treatment sequentially through the anoxic tank 21, the anaerobic tank 22 and the aerobic tank 23, and the sewage is discharged into the filtration and disinfection tank 4 for filtration and disinfection after sedimentation separation in the secondary sedimentation tank 31 for recycling. The transfer and discharge of the sewage in the above process is performed by the water pump 9.

Referring to fig. 2 and 3, three guide plates 5 arranged in a staggered manner along a vertical direction are arranged in the aerobic tank 23, four connecting columns 51 are fixedly connected to each guide plate 5, four connecting columns 51 are respectively connected with four corners of the guide plates 5, the guide plates 5 are obliquely arranged, two upper and lower adjacent guide plates 5 are obliquely arranged in opposite directions, the upper and lower adjacent guide plates 5 are arranged in a staggered manner along a horizontal direction, the lower side of the upper guide plate 5 covers the edge of the higher side of the lower adjacent guide plate 5, and the distance is kept.

Referring to fig. 1, an aerator 6 is arranged on the outer side of the biochemical tank 2, the aerator 6 is connected with an aeration pipe 61 extending into the bottom of the aerobic tank 23, the lower end of the aeration pipe 61 is bent and extended between the lower side of the lowest guide plate 5 and the bottom wall of the aerobic tank 23, and the air outlet end of the aeration pipe 61 is connected with a microporous aeration head 62.

When the aerator 6 works, a large amount of bubbles are blown out through the microporous aeration heads 62, so that more oxygen is dissolved in the sewage for the growth and propagation of microorganisms, the bubbles move obliquely upwards along the lower surface of the lowermost guide plate 5, and when the bubbles leave the higher side of the lowermost guide plate 5, the bubbles continue to be guided by the guide plates 5 adjacent to the upper side, and under the action of each guide plate 5, the bubbles move upwards along a zigzag path in the sewage.

Referring to fig. 3, the guide plate 5 gradually inclines upwards from the middle to two sides parallel to the inclination direction of the guide plate 5, so that bubbles diffuse from the middle to two sides when moving along the lower surface of the guide plate 5, which is beneficial to distributing the bubbles in sewage more and improving the uniformity of dissolved oxygen in the sewage.

Referring to fig. 2 and 3, the two sides of the guide plate 5 parallel to the tilting direction thereof are respectively provided with a side plate 52, the side plates 52 are positioned on the lower surface of the guide plate 5, the side plates 52 prevent bubbles from directly escaping from the two sides of the guide plate 5, the lowest point of the side plates 52 of the guide plate 5 positioned above is higher than the highest point of the guide plate 5 adjacent below, and when bubbles leave the higher side of the guide plate 5, the bubbles are not easy to escape from the guide plate 5 adjacent above under the blocking effect of the side plates 52 of the guide plate 5 adjacent above.

Referring to fig. 3, two side plates 52 located on the same guide plate 5 are gradually inclined away from each other from top to bottom, so that the side plates 52 can better avoid the adjacent guide plate 5 below on the premise of keeping the same size of each guide plate 5.

Referring to fig. 1, a heating box 7 is connected between an aerator 6 and an aeration pipe 61, a heating rod 71 is arranged in the heating box 7, a controller 72 is arranged outside the heating box 7, and the heating rod 71 is electrically connected with the controller 72; the aerobic tank 23 is internally provided with a temperature sensor 73 for measuring the temperature of sewage, the temperature sensor 73 is electrically connected with a controller 72, and the controller 72 collects temperature data measured by the temperature sensor 73. When the sewage temperature is lower than a set value, the controller 72 controls the heating rod 71 to heat; when the sewage is higher than another set value, the controller 72 controls the heating rod 71 to stop heating.

In colder weather, the air blown out of the aerator 6 is heated by the heating rod 71, and the heated air forms bubbles to heat the sewage, so that the activity of microorganisms in the aerobic tank 23 is improved, and the degradation efficiency of organic matters is improved; in addition, the air is heated, so that the efficiency of dissolving oxygen in the air into sewage can be improved.

Referring to fig. 1 and 4, the overflow gap 111 is adjacent to one of the sidewalls of the sedimentation tank 1, and the partition 11 is provided with a filter 8 covering the overflow gap 111 along a vertical plane. The filter 8 comprises a square outer frame 81, the outer frame 81 is fixedly locked on one side of the partition plate 11, which is close to the sedimentation tank 1, through expansion bolts, the upper side and the lower side of the outer frame 81 are respectively connected with a rotating shaft 82 in a rotating mode, the rotating shafts 82 are horizontally arranged, an upper frame strip and a lower frame strip which are parallel to the outer frame 81 are jointly wound with a plurality of wires 83, the wires 83 can be particularly endless annular steel wire ropes, the wires 83 are evenly distributed along the axial equidistance of the rotating shafts 82, annular grooves 821 for positioning the wires 83 are formed in the two rotating shafts 82, a rotating handle 822 is arranged at one end of the rotating shaft 82 located above, and the rotating handle 822 is located on the outer side of the square frame. The rotating shaft 82 is driven to rotate by rotating the handle, so that the rotating shaft 82 can drive the silk thread 83 to rotate, the silk thread 83 is scratched by the annular groove 821, impurities adhered to the silk thread 83 are reduced, and the silk thread 83 is kept clean.

Referring to fig. 4 and 5, an outer frame 81 is provided with an adjusting assembly 823, the adjusting assembly 823 comprises an adjusting plate 823 and an adjusting screw 823, the adjusting plate 823 is of a long rectangular structure, the width of the adjusting plate 823 is larger than the bottom diameter of a ring groove 821, the length direction of the adjusting plate 823 is parallel to a rotating shaft 82, the adjusting plate 823 sequentially penetrates through surrounding areas of all threads 83 along the length direction of the adjusting plate 823, two ends of the adjusting plate 823 are fixedly provided with rotating shafts 8233, and the two rotating shafts 8233 are respectively connected with two vertical frame strips of the outer frame 81 in a rotating mode; the adjusting screw 8231 is in threaded connection with an upper frame body strip of the outer frame 81, the upper end of the adjusting screw 8231 is in threaded connection with a locking nut 8235, the adjusting screw 8231 is perpendicular to the different surface of the rotating shaft 8233, the lower end of the adjusting screw 8231 penetrates through the adjusting plate 8232, the adjusting plate 8232 is provided with an avoidance gap 8237 for avoiding the adjusting screw 8231, the lower end of the adjusting screw 8231 is in threaded connection with two limiting blocks 8236, the two limiting blocks 8236 are located on two sides of the adjusting plate 8232 respectively, the two limiting blocks 8236 are in conical shapes, the small ends of the two limiting blocks 8236 are arranged oppositely, and the conical surfaces of the two limiting blocks 8236 can avoid the rotating adjusting plate 8232.

The implementation principle of the sewage regeneration treatment system in the embodiment of the application is as follows: in the process of aeration by the aerator 6, the aerator 6 blows out bubbles to the sewage in the aerobic tank 23 through the aeration pipe 61, under the guiding action of each guide plate 5, the bubbles move upwards in the water along a broken line-shaped path until the bubbles break up on the water surface, and the bubbles move along the broken line-shaped path, so that the stay time of the bubbles in the water is greatly increased, the proportion of oxygen dissolved into the sewage in the bubbles is increased, the dissolved oxygen efficiency in the aeration process is further improved, and the microbial decomposition of organic matters is facilitated. The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A sewage regeneration treatment system is characterized in that: the anaerobic treatment device comprises a sedimentation tank (1), a biochemical tank (2), a secondary sedimentation tank (3) and a filtration and disinfection tank (4), wherein the biochemical tank (2) comprises an anoxic tank (21), an anaerobic tank (22) and an aerobic tank (23); a plurality of guide plates (5) which are arranged in a staggered manner along the vertical direction are arranged in the aerobic tank (23), the guide plates (5) are obliquely arranged, two upper and lower adjacent guide plates (5) are obliquely arranged towards opposite directions, the lower side of the upper guide plate (5) covers the edge of the higher side of the lower adjacent guide plate (5), the distance is kept, an aerator (6) is arranged on the outer side of the aerobic tank (23), the aerator (6) is connected with an aeration pipe (61) extending into the bottom of the aerobic tank (23), and the lower end of the aeration pipe (61) is bent and extends to the position between the lowest guide plate (5) and the bottom wall of the aerobic tank (23); two sides of the guide plate (5) parallel to the self-inclined direction are respectively provided with a side plate (52), and the side plates (52) are positioned on the lower surface of the guide plate (5); the guide plate (5) is gradually inclined upwards from the middle to the direction approaching to the two side plates (52).

2. A sewage regeneration treatment system according to claim 1, wherein: the lower end of the aeration pipe (61) is connected with a microporous aeration head (62).

3. A sewage regeneration treatment system according to claim 1, wherein: a heating box (7) is connected between the aerator (6) and the aeration pipe (61), and a heating rod (71) is arranged in the heating box (7).

4. A sewage regeneration treatment system according to claim 1, wherein: the lowest point of the side plate (52) of the guide plate (5) positioned above is higher than the highest point of the guide plate (5) adjacent below.

5. A sewage regeneration treatment system according to claim 4, wherein: the two side plates (52) positioned on the same guide plate (5) are gradually far away from each other from top to bottom.

6. A sewage regeneration treatment system according to claim 1, wherein: sedimentation tank (1) with biochemical pond (2) link into an organic whole, sedimentation tank (1) with be equipped with baffle (11) between biochemical pond (2), baffle (11) upper portion is equipped with overflow breach (111), baffle (11) are equipped with along vertical plane cover filter element (8) of overflow breach (111).

7. A sewage regeneration treatment system according to claim 6, wherein: the filter element (8) comprises an outer frame (81), the upper side and the lower side of the outer frame (81) are respectively connected with a rotating shaft (82) in a rotating mode, the rotating shafts (82) are horizontally arranged, a plurality of threads (83) are jointly wound between the rotating shafts (82), the threads (83) are evenly distributed along the axial equidistance of the rotating shafts (82), annular grooves (821) used for positioning the threads (83) are formed in the rotating shafts (82), and rotating handles (822) are arranged at one ends of the rotating shafts (82) located at the upper side.

8. A sewage regeneration treatment system according to claim 7, wherein: the outer frame (81) is provided with an adjusting assembly (823), the adjusting assembly (823) comprises an adjusting plate (823) and an adjusting screw (823), the adjusting plate (823) is of a long rectangular structure, the width of the adjusting plate (823) is larger than the bottom diameter of the groove (821), the length direction of the adjusting plate (823) is parallel to the rotating shaft (82), the adjusting plate (823) sequentially penetrates through the surrounding area of each silk thread (83) along the length direction of the adjusting plate, rotating shafts (8233) are fixedly arranged at two ends of the adjusting plate (823), and the two rotating shafts (8233) are respectively connected with the outer frame (81) in a rotating mode; adjusting screw (8231) with the upper portion threaded connection of frame (81), adjusting screw (8231) with axis of rotation (8233) different face is perpendicular, the lower extreme of adjusting screw (8231) passes adjusting plate (8232), adjusting plate (8232) are equipped with and are used for dodging gap (8237) dodging adjusting screw (8231), the lower extreme threaded connection of adjusting screw (8231) has two stopper (8236), two stopper (8236) are located respectively the both sides of adjusting plate (8232).