CN109650587B

CN109650587B - Multistage gardens sewage regeneration system that subsides

Info

Publication number: CN109650587B
Application number: CN201811593774.4A
Authority: CN
Inventors: 李晓静; 陈兆林; 黄云福; 陈伯礼; 诸葛森豪
Original assignee: Wenzhou Shenbang Municipal Engineering Co ltd
Current assignee: Zhejiang Zhaobo Construction Co., Ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2021-07-23
Anticipated expiration: 2038-12-25
Also published as: CN109650587A

Abstract

The invention relates to a multistage sedimentation garden sewage regeneration system, which belongs to the technical field of sewage treatment, and the technical scheme main points of the multistage sedimentation garden sewage regeneration system are that the multistage sedimentation garden sewage regeneration system comprises a sedimentation treatment tank and a sewage pipe communicated with the sedimentation treatment tank, wherein a first partition plate, a second partition plate and a third partition plate are fixedly arranged in the sedimentation treatment tank, the sedimentation treatment tank is divided into a coarse filtration area, a slow flow area, a standing area and a fine filtration area which are communicated with each other, the bottoms of the coarse filtration area, the slow flow area and the standing area are communicated with a sewage discharge pipe with a valve, all the sewage discharge pipes are communicated with the same collecting pipe, one end of the collecting pipe is communicated with a flushing pump, and the other end of the collecting pipe, which is far away from the flushing pump, is in an opening shape, so that impurities generated after sewage sedimentation can be conveniently removed, and the manual treatment cost can be reduced.

Description

Multistage gardens sewage regeneration system that subsides

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a multistage sedimentation garden sewage regeneration system.

Background

The ecological garden refers to a garden green land system constructed by taking the ecological principle as guidance, in the system, arbors, shrubs, herbs, vine plants and the like form an ecological tribe, the populations are mutually coordinated, the ecological garden has compound levels and appropriate season colors, the plants with different ecological characteristics can obtain their own places, the sunlight, air, land, nutrients and the like are fully utilized to form a harmonious, orderly and stable tribe, the ecological garden is the embodiment of the highest level of urban garden greening work, and the ecological garden is the inevitable result of the development of human materials and mental civilization.

In the design process of ecological gardens, sewage treatment is an important project. Water for fountains, landscape pools, irrigation and the like in ecological gardens is mainly tap water, and sewage in rainy days is usually directly discharged into municipal sewage pipes, so that great waste is caused to water resources.

The existing Chinese patent with reference to application number 201410619554.X discloses a multistage sedimentation garden sewage regeneration system, which comprises a diversion trench, an air blower, a sedimentation treatment tank, an inflatable clamping plate, a first partition plate, a second partition plate and a self-sucking pump, wherein the first partition plate and the second partition plate separate the inner space of the sedimentation treatment tank into a slow flow sedimentation area, a transition area, a buffer area and a flocculation sedimentation area, and sewage can be effectively purified and treated through sedimentation in a plurality of areas.

The above prior art solutions have the following drawbacks: above-mentioned multistage fixed impurity among the gardens sewage regeneration system of subsiding remains in subsides district, transition area, buffer zone and flocculation subsides the district bottom, is difficult to get rid of to make subsequent manual processing cost increase.

Disclosure of Invention

The invention aims to provide a multistage sedimentation garden sewage regeneration system which is convenient for removing impurities generated after sewage sedimentation so as to reduce the manual treatment cost.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a multistage gardens sewage regeneration system that subsides, including the sedimentation treatment pond and with the sewage pipe of sedimentation treatment pond intercommunication, the fixed first baffle that is provided with, second baffle and third baffle in the sedimentation treatment pond, and separate the sedimentation treatment pond for the coarse filtration district that communicates each other, slow flow district, district and the fine filtration district of stewing, and the coarse filtration district, the bottom in slow flow district and the district of stewing all communicates the blow off pipe that has the valve, the same header of all blow off pipe intercommunications, the one end intercommunication of header has the washer pump, the one end that the washer pump was kept away from to the header is the opening form.

Through the technical scheme, sewage enters the sedimentation treatment tank from the sewage pipe, is firstly coarsely filtered in the coarse filtration area, is temporarily stored in the slow flow area for slow flow, is statically placed in the standing area for filtration, and finally enters the fine filtration area for precision filtration, and can be finally recycled, because solid impurities are generated in each area and can be accumulated at the bottom of each area, the manual cleaning is inconvenient, the cleaning cost is high, at the moment, clear water can be flushed into the sedimentation treatment tank if necessary by opening a valve of the sewage discharge pipe, the sediments and impurities accumulated at the bottom of the tank can be discharged into the collection pipe from each sewage discharge pipe, and finally the clear water is flushed into the collection pipe by the flushing pump, so that the impurities in the collection pipe are discharged together to prevent blockage, and therefore, the bottoms of the coarse filtration area, the slow flow area, the standing area and the fine filtration area can be quickly cleaned, and the manual processing cost is reduced.

The invention is further configured to: the utility model discloses a washing pump, including the header, be provided with a plurality of filter screens in the header, and a plurality of filter screens and a plurality of blow off pipe crisscross setting, along the direction of keeping away from the flush pump, the filtration pore size of filter screen reduces gradually, all is provided with a deposit discharge pipe that has the valve between per two adjacent filter screens and between the filter screen that is closest to the flush pump and the flush pump, deposits discharge pipe and header intercommunication.

Through the technical scheme, the sewage discharged from the rough filtering area, the slow flow area and the standing area can be filtered by the arrangement of the plurality of filter screens, the solid impurities in the sewage discharged from the rough filtering area are more, so that the passing filter screens are more in quantity and larger in filtering force, the solid impurities in the sewage discharged from the slow flow area are less, the passing filter screens are less than the passing filter screens of the sewage discharged from the rough filtering area, the solid impurities in the sewage discharged from the standing area are least in quantity, and therefore the passing filter screens are least in quantity, so that the filtering force distribution of the sewage is reasonable, the sewage filtering treatment effect is improved, the sewage discharged from the collecting pipe can be collected and recycled by filtering, and the recovery utilization rate of the sewage is further improved. And the impurity filtered by a plurality of filter screens can be discharged from the corresponding sedimentation discharge pipe, and the flushing pump can be opened to increase the discharge force in the discharge process, thereby effectively preventing blockage.

The invention is further configured to: the coarse filtration area is internally provided with a coarse filtration component, the coarse filtration component comprises a coarse filtration screen and a top cover fixedly connected with the coarse filtration screen, the top cover is arranged above the coarse filtration area, and the height of the coarse filtration screen in the coarse filtration area is lower than that of the sewage pipe.

Through above-mentioned technical scheme, sewage gets into the coarse strainer at first when the strainer gets into the coarse strainer district from the sewage pipe, because the filtering action of coarse strainer, some bulky impurity can be filtered out by the coarse strainer for sewage obtains the prefilter, and when the solid impurity of piling up on the coarse strainer is more, can mention the top cap, the top cap takes the coarse strainer to rise together and leaves the coarse strainer district, put back the coarse strainer district again after the solid impurity on the coarse strainer is complete clean up and continue the coarse strainer, thereby effectively prevented the coarse strainer and blockked up, continuity when ensureing that sewage carries out the coarse strainer operation.

The invention is further configured to: the middle position of the vertical surface of the first clapboard is provided with a communicating hole which is used for communicating the rough filtering area with the slow flow area, the top of the first clapboard is provided with a vertical flushing hole, and the flushing hole is communicated with the communicating hole.

Through the technical scheme, sewage subjected to coarse filtration by the coarse filtration enters the coarse filtration area and enters the slow flow area from the communication hole, the slow flow area can temporarily store the sewage, but the sewage subjected to coarse filtration still contains more solid impurities which can possibly block the communication hole, and at the moment, an external high-pressure water source can be introduced into the flushing hole and the communication hole is flushed along the flushing hole, so that the blocking phenomenon of the communication hole is effectively prevented, and the continuity and the reliability of sewage filtration are further improved.

The invention is further configured to: the water suction pump is fixedly arranged on the second partition plate, the water suction pump is communicated with a water inlet pipe and a water outlet pipe, the water inlet pipe extends to the bottom position of the slow flow area, the water outlet pipe extends into the standing area, and the end of the water inlet pipe is provided with an anti-blocking filter screen.

Through above-mentioned technical scheme, sewage gets into the gentle district back, and the suction pump starts to the sewage that will slowly flow the district through inlet tube and outlet pipe suction to the district that stews, thereby the stifled filter screen of preventing of inlet tube tip can prevent effectively that some great solid impurity of volume from entering into the suction pump inside and causing the jam, has ensured the stable operation ability of suction pump, prolongs the life of suction pump.

The invention is further configured to: and a standing hole is formed in the vertical surface of the third partition plate close to the top end, and the standing hole is used for communicating the standing area with the fine filtration area.

Through above-mentioned technical scheme, after sewage entered into the district that stews, because the hole of standing is located the top position department in the district that stews, consequently only the liquid level surpasss just can enter into the essence from the district that stews after the hole of standing and strains the district, and this in-process that the liquid level height reachd the hole of standing, some solid impurity in the sewage can take place to subside to further improve the filter effect of sewage, and then improve the purification quality of sewage.

The invention is further configured to: the fine filtration area is provided with a fine filtration component, and the fine filtration component comprises a displacement frame arranged above the fine filtration area and a fine filtration net fixedly arranged in the displacement frame.

Through the technical scheme, sewage is discharged into the fine filtration area from the standing hole, and passes through the fine filtration net from top to bottom, due to the fine filtration effect of the fine filtration net, the sewage can be further subjected to filtration treatment, the filtration force is large, the sewage basically reaches the standard capable of being reused, the bottom of the fine filtration area is a clean water source which is reused intentionally at the moment, the fine filtration net can be blocked by impurities due to long-time use, the displacement frame can be taken down at the moment, the displacement frame drives the fine filtration net to fall off the fine filtration area together, then the fine filtration net inside the displacement frame can be cleaned or reused after being replaced, the fine filtration process can be continuously carried out, and the filtration effect of the sewage is improved.

The invention is further configured to: the fine filtration net comprises a filter plate layer, a fiber ball filter material layer and an active carbon plate layer which are sequentially arranged from top to bottom.

Through above-mentioned technical scheme, sewage is in proper order through filtering behind sheet layer, fibre ball filter bed and the active carbon sheet layer, and more impurity and some less impurity of volume can be kept apart, adsorb to make the water source quality who gets into the fine filtration district improve, the purification treatment quality of sewage improves promptly.

The invention is further configured to: and a submersible pump is arranged at the bottom of the fine filtering area.

Through above-mentioned technical scheme, the immersible pump can be with the moisture recycle that purifies the completion.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the collecting pipes communicated with the coarse filtration area, the slow flow area and the standing area are arranged, so that impurities at the bottom of the pool can be quickly discharged, the convenience for cleaning the impurities at the bottom of the pool is improved, and the manual cleaning cost is reduced;

2. by arranging the flushing pump and arranging the plurality of filter screens in the collecting pipe, the further treatment force of the sewage is effectively improved while the blockage in the collecting pipe is prevented;

3. through setting up rough filtration subassembly and essence and strain the subassembly and make the treatment dynamics of sewage improve greatly.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded schematic view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a top view of the present invention;

FIG. 5 is an exploded view intended to emphasize an anti-clogging screen;

FIG. 6 is a cross-sectional view of a header.

Reference numerals: 1. a sedimentation treatment tank; 11. a sewage pipe; 12. a first separator; 121. a communicating hole; 122. flushing the hole; 13. a second separator; 131. a water pump; 1311. a water inlet pipe; 13111. anti-blocking filter screens; 1312. a water outlet pipe; 14. a third partition plate; 141. a static placement hole; 2. a coarse filtration area; 3. a slow flow area; 4. a standing area; 5. a fine filtration area; 51. a submersible pump; 6. a blow-off pipe; 7. a header; 71. a filter screen; 72. a flush pump; 73. a sediment discharge pipe; 8. a coarse filtration component; 81. coarse filtration; 82. a top cover; 821. a connecting shaft; 822. a handle; 9. a fine filter assembly; 91. a replacement frame; 92. fine filtering net; 921. a filter plate layer; 922. a fiber ball filter material layer; 923. an active carbon plate layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A multistage sedimentation garden sewage regeneration system is shown in figure 1 and comprises a sedimentation treatment tank 1, a sewage pipe 11 is communicated with one side of the sedimentation treatment tank 1, a first partition plate 12, a second partition plate 13 and a third partition plate 14 which are parallel to each other are arranged in the sedimentation treatment tank 1 at intervals, the sedimentation treatment tank 1 is divided into a rough filtering area 2, a slow flow area 3, a standing area 4 and a fine filtering area 5 which are communicated in sequence by the first partition plate 12, the second partition plate 13 and the third partition plate 14, the sewage pipe 11 is communicated with the rough filtering area 2, a collecting pipe 7 is arranged outside the sedimentation treatment tank 1, the collecting pipe 7 is communicated with the rough filtering area 2, the slow flow area 3 and the standing area 4, one end of the collecting pipe 7 is communicated with a flushing pump 72, and the other end is open. After the sewage passes through the coarse filtration zone 2, the slow flow zone 3 and the standing zone 4 in sequence, solid impurities remained at the bottom of the sedimentation treatment tank 1 can be flushed into the collecting pipe 7 for uniform treatment and flushed out by the flushing pump 72, so that the blockage of the collecting pipe 7 is prevented.

As shown in fig. 1 and fig. 6, the bottom positions of the rough filtration area 2, the slow flow area 3 and the standing area 4 are all communicated with a drainage pipe 6 with a valve, one end of the drainage pipe 6 far away from the sedimentation treatment tank 1 is communicated with a collection pipe 7, a plurality of filter screens 71 are arranged inside the collection pipe 7 at intervals, the plurality of filter screens 71 and the plurality of drainage pipes 6 are arranged in a staggered manner in the length direction of the collection pipe 7, the size of filter holes of the filter screens 71 is gradually reduced along the direction far away from a flushing pump 72, sedimentation drainage pipes 73 with valves are arranged between the adjacent filter screens 71 and between the filter screen 71 closest to one end of the flushing pump 72 and the flushing pump 72, and the collection pipe 7 is communicated with the external environment through the sedimentation drainage pipes 73. After the sedimentation treatment tank 1 works for a long time, more impurities can be accumulated at the bottom of each area, the valve of the sewage discharge pipe 6 can be opened at the moment, then a plurality of areas of the sedimentation treatment tank 1 are washed, solid impurities enter the collecting pipe 7 along the sewage discharge pipe 6 after washing, and then sewage is filtered by the filter screen 71 and the filtered sewage is recovered. The sewage discharged from the rough filtering area 2 contains more impurities, the quantity of the passing filter screens 71 is the largest, the sewage discharged from the rough filtering area 3 contains a little less impurities, the quantity of the passing filter screens 71 is less than that of the passing filter screens 71 of the sewage of the rough filtering area 2, and the quantity of the impurities contained in the sewage discharged from the standing area 4 is less, so that the sewage with different pollution degrees only needs to pass one layer of filter screens 71, and the filtering force of the sewage with different pollution degrees is different, thereby improving the filtering effect.

As shown in fig. 2, coarse filtration section 2 is provided with coarse filtration assembly 8, coarse filtration assembly 8 includes coarse filtration screen 81 and top cover 82, top cover 82 covers the top end of coarse filtration section 2, vertical connecting shaft 821 is fixedly provided on the lower surface of top cover 82, connecting shaft 821 fixes top cover 82 and coarse filtration screen 81 together, handle 822 is provided on the upper surface of top cover 82, coarse filtration screen 81 is lower than sewage pipe 11, therefore, after entering the coarse filtration area 2, the sewage is firstly contacted with the coarse filtration screen 81, the coarse filtration screen 81 primarily filters the solid impurities with larger body types in the sewage, when the coarse filter 81 has a large amount of impurities accumulated thereon, the top cover 82 can be lifted by the handle 822, therefore, the coarse filter 81 is taken away from the coarse filter area 2, impurities on the coarse filter 81 are cleaned, and then the top cover 82 is covered above the coarse filter area 2 again, so that the coarse filter 81 continues to perform filtering function, and the filtering capacity of the coarse filter 81 is ensured.

As shown in fig. 2, a communication hole 121 for communicating the coarse filtration region 2 with the slow flow region 3 is formed at the middle position of the first partition plate 12, and sewage is coarsely filtered and then enters the slow flow region 3 through the communication hole 121 for temporary storage. The top end of the first partition plate 12 is provided with a vertical flushing hole 122, the flushing hole 122 is communicated with the communication hole 121, when the communication hole 121 is blocked due to long-term use, the flushing hole 122 can be communicated with an external high-pressure water source, high-pressure water enters the communication hole 121 through the flushing hole 122, the communication hole 121 is backwashed, and the communication hole 121 is prevented from being blocked.

As shown in fig. 2 and 5, a water suction pump 131 is disposed at the top end of the second partition plate 13, the water suction pump 131 is communicated with a water inlet pipe 1311 and a water outlet pipe 1312, the water inlet pipe 1311 extends into the bottom of the slow flow area 3, the water outlet pipe 1312 extends into the standing area 4, an anti-blocking filter screen 13111 is disposed at the bottom of the water inlet pipe 1311, and sewage in the slow flow area 3 can be pumped into the standing area 4 through the operation of the water suction pump 131, so that the sewage is further subjected to standing filtration in the standing area 4, and the filtration effect is improved.

As shown in fig. 2, a plurality of standing holes 141 are formed on a vertical surface of the third partition 14 near the top end, the standing holes 141 communicate the standing region 4 with the fine filtration region 5, when the level of the sewage in the standing region 4 is higher than that of the standing holes 141, the sewage enters the fine filtration region 5 through the standing holes 141, and most of impurities in the sewage settle at the bottom of the standing region 4 due to standing in the process that the liquid level reaches the height of the standing holes 141, so that the filtration effect of the sewage is further improved.

As shown in fig. 2 and fig. 3, the fine filtering region 5 is provided with a fine filtering component 9, the fine filtering component 9 includes a displacement frame 91 and a fine filtering net 92 located inside the displacement frame 91, the displacement frame 91 is erected on the top of the third partition plate 14 and the sedimentation treatment tank 1, the fine filtering net 92 includes a filtering plate layer 921, a fiber ball filtering material layer 922 and an activated carbon plate layer 923 which are sequentially arranged from top to bottom, so that impurities in the sewage are further filtered and adsorbed, and the impurities entering the fine filtering region 5 are purified water basically meeting the requirements, so that the sewage can be recycled after being treated, and waste of water resources is reduced.

As shown in fig. 4, a submersible pump 51 is disposed at the bottom of the fine filtering area 5, and a water pumping pipe of the submersible pump 51 is communicated with the outside, so that the submersible pump 51 can pump out the purified water meeting the filtering requirement of the fine filtering area 5 and recycle the purified water.

The implementation principle of the embodiment is as follows: the sewage is discharged into the sedimentation treatment tank 1 from the sewage pipe 11, at the moment, valves of the sewage discharge pipe 6 are all closed, the sewage is firstly primarily filtered by the coarse filter screen 81, some impurities with larger volume are positioned above the coarse filter screen 81, the filtered sewage enters the coarse filter area 2 and enters the slow flow area 3 from the communication hole 121 for temporary storage, then the sewage in the slow flow area 3 is pumped into the standing area 4 by the water suction pump 131, the liquid level of the sewage in the standing area 4 is continuously raised, solid impurities in the sewage are continuously settled due to the standing effect in the process, a little flocculating agent can be properly added into the standing area 4, the impurity settling effect is further improved, the sewage purification treatment strength is larger, when the liquid level reaches the standing hole 141, the sewage at a little clean point after standing enters the fine filter area 5, the fine filtration effect of the fertilization filter screen 92 is realized, and the sewage is basically filtered completely, finally pumped out of the fine filtering area 5 by a submersible pump 51 for recycling.

When the amount of solid impurities accumulated at the bottom of the sedimentation treatment tank 1 is large, the valve of the sewage discharge pipe 6 can be opened at the moment, then the rough filtration area 2, the slow flow area 3 and the standing area 4 are washed, sewage mixed with impurities is discharged into the collecting pipe 7 after washing, the valve on the sedimentation discharge pipe 73 is in a closed state, the sewage entering the collecting pipe 7 passes through the filter screen 71, and the number of layers of the filter screen 71 passing through the rough filtration area 2 is larger than that of the filter screen 71 passing through the slow flow area 3 and is larger than that of the filter screen 71 passing through the standing area 4, so that the sewage with different impurity contents is filtered with different strength, and the filtered water passing through the collecting pipe 7 can also meet the recycling requirement.

When the amount of solid impurities accumulated in the collecting pipe 7 is large, the valve of the precipitation discharge pipe 73 can be opened, the valve of the sewage discharge pipe 6 is closed, then the flushing pump 72 is opened, and the impurities blocked by the filter screen 71 are discharged from the precipitation discharge pipe 73 by the flushing pump 72, so that the blockage in the collecting pipe 7 is prevented, and the continuous use of the collecting pipe 7 is ensured.

In summary, by providing the collecting pipe 7 communicated with a plurality of areas in the sedimentation treatment tank 1 and the plurality of sedimentation discharge pipes 73 communicated with the collecting pipe 7, the areas of the sedimentation treatment tank 1 can be cleaned conveniently, and the manual cleaning cost can be reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a multistage gardens sewage regeneration system that subsides, includes sedimentation treatment pond (1) and sewage pipe (11) with sedimentation treatment pond (1) intercommunication, its characterized in that: the sedimentation treatment tank (1) is internally and fixedly provided with a first clapboard (12), a second clapboard (13) and a third clapboard (14), the sedimentation treatment tank (1) is divided into a coarse filtration area (2), a slow flow area (3), a standing area (4) and a fine filtration area (5) which are communicated with each other, the bottoms of the coarse filtration area (2), the slow flow area (3) and the standing area (4) are communicated with drain pipes (6) with valves, all the drain pipes (6) are communicated with the same collecting pipe (7), one end of the collecting pipe (7) is communicated with a flushing pump (72), one end of the collecting pipe (7), which is far away from the flushing pump (72), is in an open shape, a plurality of filter screens (71) are arranged in the collecting pipe (7), the plurality of filter screens (71) and the plurality of drain pipes (6) are arranged in a staggered manner, the size of filter holes of the filter screens (71) is gradually reduced along the direction far away from the flushing pump (72), a sediment discharge pipe (73) with a valve is arranged between every two adjacent filter screens (71) and between the filter screen (71) closest to the washing pump (72) and the washing pump (72), and the sediment discharge pipe (73) is communicated with the collecting pipe (7).

2. The multi-stage settling garden sewage regeneration system of claim 1, wherein: be provided with coarse filtration subassembly (8) in coarse filtration district (2), coarse filtration subassembly (8) include coarse filtration screen (81) and with top cap (82) of coarse filtration screen (81) rigid coupling, coarse filtration district (2) top is located to top cap (82) lid, the height that highly is less than sewage pipe (11) of coarse filtration screen (81) in coarse filtration district (2).

3. The multi-stage settling garden sewage regeneration system of claim 1, wherein: the middle position of the vertical surface of the first clapboard (12) is provided with a communicating hole (121) which communicates the coarse filtration area (2) with the slow flow area (3), the top of the first clapboard (12) is provided with a vertical flushing hole (122), and the flushing hole (122) is communicated with the communicating hole (121).

4. The multi-stage settling garden sewage regeneration system of claim 1, wherein: a water suction pump (131) is fixedly arranged on the second partition plate (13), a water inlet pipe (1311) and a water outlet pipe (1312) are communicated with the water suction pump (131), the water inlet pipe (1311) extends to the bottom position of the slow flow area (3), the water outlet pipe (1312) extends into the standing area (4), and an anti-blocking filter screen (13111) is arranged at the end of the water inlet pipe (1311).

5. The multi-stage settling garden sewage regeneration system of claim 1, wherein: and a standing hole (141) is formed in the vertical surface of the third partition plate (14) close to the top end, and the standing area (4) is communicated with the fine filtering area (5) through the standing hole (141).

6. The multi-stage settling garden sewage regeneration system of claim 5, wherein: the fine filtering area (5) is provided with a fine filtering component (9), and the fine filtering component (9) comprises a displacement frame (91) arranged above the fine filtering area (5) and a fine filtering net (92) fixedly arranged in the displacement frame (91).

7. The multi-stage settling garden sewage regeneration system of claim 6, wherein: the fine filtering net (92) comprises a filtering plate layer (921), a fiber ball filtering material layer (922) and an active carbon plate layer (923) which are sequentially arranged from top to bottom.

8. The multi-stage settling garden sewage regeneration system of claim 1, wherein: and a submersible pump (51) is arranged at the bottom of the fine filtering area (5).