CN118084275A - Sewage treatment system of mixing station - Google Patents
Sewage treatment system of mixing station Download PDFInfo
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- CN118084275A CN118084275A CN202410488275.8A CN202410488275A CN118084275A CN 118084275 A CN118084275 A CN 118084275A CN 202410488275 A CN202410488275 A CN 202410488275A CN 118084275 A CN118084275 A CN 118084275A
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- tank
- sewage
- aeration
- equipment
- pipe
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- 239000010865 sewage Substances 0.000 title claims abstract description 99
- 238000002156 mixing Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 56
- 238000005273 aeration Methods 0.000 claims abstract description 55
- 239000000706 filtrate Substances 0.000 claims abstract description 44
- 238000003756 stirring Methods 0.000 claims abstract description 39
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 34
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 34
- 239000004576 sand Substances 0.000 claims abstract description 33
- 238000000926 separation method Methods 0.000 claims abstract description 30
- 239000004575 stone Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims description 61
- 230000007704 transition Effects 0.000 claims description 16
- 238000004065 wastewater treatment Methods 0.000 claims description 10
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 230000000630 rising effect Effects 0.000 description 16
- 238000006386 neutralization reaction Methods 0.000 description 15
- 239000002351 wastewater Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 235000013409 condiments Nutrition 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system of a mixing station, and aims to solve the problems that treated sewage cannot be reused, the environment is affected to a certain extent and the aeration effect is not ideal. Comprising the following steps: the device comprises a discharging platform, sand and stone separation equipment, a central control room, a stirring pool, a plurality of clean water pools, a carbon dioxide tank, a plate-and-frame filter press, a liquid filtering pool, a filtrate barrel and FNR equipment, wherein the central control room, the stirring pool, the plurality of clean water pools, the carbon dioxide tank, the plate-and-frame filter press, the liquid filtering pool, the filtrate barrel and the FNR equipment are sequentially arranged; the aeration equipment is arranged in the reaction tank, the outer wall of the reaction tank is also communicated with a water inlet pipe, the reaction tank is filled with a plurality of suspended fillers, and the reaction tank is also internally provided with an aeration pipe. After the equipment arranged above is used for carrying out step-by-step treatment and aeration, sewage can be recycled, the aeration efficiency is improved, and resources are further saved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system of a mixing station.
Background
The wastewater treatment process of the mixing station is limited and affected by a variety of factors. Optimization of wastewater treatment process schemes is important to ensure the operation performance of wastewater treatment facilities and reduce investment and operation cost. According to the specific conditions of the climate conditions, the land, the vegetation, the topography, the road traffic conditions, the residential building layout and the like of the project area, the collection and treatment modes of the mixing station wastewater according to local conditions are explored, the problem of effective treatment of the current wastewater is solved, the requirement of resource utilization can be fully considered, water resources are saved, the water environment is protected, and the social and economic development of the project area is promoted to be coordinated with resources and environment.
The wastewater sources of the mixing station are as follows: separating water generated by waste concrete, washing water of production and transportation equipment, washing water of production sites and part of rainwater. When wastewater is treated, the water area is treated in an aeration mode, the device is filled with CO 2 by utilizing an aeration system, meanwhile, the water is stirred by adopting a water pump, so that the wastewater is fully reacted, the pH of the wastewater is regulated, meanwhile, the wastewater solubility Ca 2+ is precipitated, a full reaction system stands, the sludge and clear water are controlled to be respectively discharged by an electromagnetic valve, and two groups of alternating operation are realized.
In wastewater treatment, the consumption of treatment equipment is higher, the water consumption is more, the water resource waste is serious, when sewage is subjected to aeration treatment, the diameter of gas bubbles exposed in water by an aeration pipe is larger, the rising speed of the gas bubbles in water is high, the gas bubbles are difficult to stay in water for a long time to perform neutralization reaction with the sewage, the aeration time is prolonged, the sewage treatment efficiency is not improved, and the resource waste is further caused.
Disclosure of Invention
The invention aims to provide a sewage treatment system of a mixing station, which can ensure that bubbles generated by aeration stay in water for a long time and can ensure that the bubbles generated by aeration can fully perform neutralization reaction with sewage.
The invention is realized by the following technical scheme:
a mixing station sewage treatment system comprising:
The device comprises a discharging platform, sand and stone separation equipment, a central control room, a stirring pool, a plurality of clean water pools, a carbon dioxide tank, a plate-and-frame filter press, a liquid filtering pool, a filtrate barrel and FNR equipment, wherein the central control room, the stirring pool, the plurality of clean water pools, the carbon dioxide tank, the plate-and-frame filter press, the liquid filtering pool, the filtrate barrel and the FNR equipment are sequentially arranged;
The aeration equipment is arranged in the reaction tank, a water inlet pipe is also communicated with the outer wall of the reaction tank, a plurality of suspended fillers are filled in the reaction tank, and an aeration pipe is also arranged in the reaction tank;
The filter tank is communicated with a clear water pipe and is connected with a discharge chute and a filtering area of FNR equipment respectively, the FNR equipment is also connected with the clear water tank and the stirring tank respectively through the clear water pipe, the carbon dioxide tank is connected with an aeration pipe in the FNR equipment through the carbon dioxide pipe, an outlet of the sand-stone separation equipment is connected with the stirring tank through a mud sewage pipe, an inlet and an outlet of the filtrate tank are respectively connected with a plate-frame filter press and a filtrate barrel through the mud sewage pipe, the filtrate barrel is connected with a water inlet pipe of a reaction tank in the FNR equipment through a filtrate pipe pump, the discharge chute is used for collecting sewage and mixing clear water, the sand-stone separation equipment is used for introducing sewage after sand-stone separation into the stirring tank, the stirring tank is used for introducing sewage into the plate-frame filter press again after rotary processing through a screw pump, the water after sewage separation and filtration is fed into the filtrate tank, the water in the filtrate tank is used for introducing sewage into the filtrate barrel through the mud sewage precipitation tank, the sewage in the filtrate barrel enters the reaction tank through the filtrate pipe pump, and the carbon dioxide is recycled into the sewage tank and the aeration tank simultaneously, and the sewage is recycled through the sedimentation tank and the aeration tank.
According to the technical scheme, after the sewage to be treated in the mixing station is treated by the discharging platform, the sewage flows to the sand-stone separation equipment through the discharging groove, the sewage after sand-stone separation flows to the stirring tank, the sewage enters the plate-and-frame filter press after being stirred and mixed in the stirring tank, the separated water is sent to the filtering liquid tank after mud-water separation of the plate-and-frame filter press, the filtering liquid tank is used for filtering and penetrating the sewage and then sending the sewage to the filtrate tank, the filtrate tank is used for precipitating the sewage and then sending the sewage to the FNR equipment, and finally, the sewage and the sewage generated by the treated sewage are respectively sent to the stirring tank and the clean water tank through aeration treatment, so that the recycling is realized.
In some optional technical schemes, the aeration equipment comprises a cyclone and a shielding cover, the cyclone is positioned under an inner cavity of the shielding cover, a driving piece is connected to the bottom transmission of the cyclone, a plurality of cyclone arms are arranged on an annular array on the peripheral wall of the cyclone, a cutting rod is further arranged on the peripheral wall of the cyclone, and the cutting rod surrounds the center of the cyclone to rotate and the rotating track is conical.
According to the technical scheme, the cyclone is used for rotating through the driving piece, and carbon dioxide bubbles exposed out of the aeration pipe are cut and split into small bubbles by the aid of the cyclone arm and the cutting rod, so that the small bubbles can be fully neutralized with sewage in the reaction tank.
In some optional technical scheme, the inside hollow out construction that is of swirler, the whirl arm is L type and center runs through there is the passageway, the whirl arm with the inner chamber intercommunication of swirler, still put through in the liquid filtering pond has mixed liquid back flow, the input of mixed liquid back flow is located the inner chamber of swirler, the spiral encircles there is a plurality of cutting blades on the cutting rod, the swirler is conical structure, the top center of swirler still is provided with the (mixing) shaft, the (mixing) shaft is spiral and keeps away from the diameter of swirler one end increases gradually, the logical groove that makes aeration pipe and mixed liquid back flow wear to establish is seted up to the bottom of shielding cover.
Among the above-mentioned technical scheme, the mixed liquor back flow can be to the injection mixed liquor in the swirler and spout through the whirl arm, and the mixed liquor of rotatory spraying also can break up the segmentation to a certain extent to the bubble, and cutting blade on the cutting stick can cut apart the bubble when rotating, and the (mixing) shaft can help the bubble to rise when cutting apart the bubble.
In some optional technical schemes, the middle part of the shielding cover is folded towards the central shaft to form a folded part, the top end diameter of the shielding cover is larger than the bottom end diameter of the shielding cover, a transition part is formed between the folded part and the top end of the shielding cover, the transition part is of a curved surface structure, a plurality of baffles are hinged in the shielding cover at the folded part, and the top end of the cutting rod is abutted to the bottom surface of the baffle.
In the technical scheme, the gathering part and the baffle plate can delay the residence time of the carbon dioxide bubbles to a certain extent, and the residence time can be effectively prolonged when the bubbles rise along the curved surface of the transition part.
In some optional technical schemes, the bottom surface of the baffle is provided with an arc-shaped raised line, the starting end, the ending end or the middle part of the arc-shaped raised line faces the baffle to form a recess, the total radian length of the arc-shaped raised line on the bottom surface of each baffle is smaller than pi, and the radius of the arc-shaped raised line is equal to the rotation radius of the cutting rod.
Among the above-mentioned technical scheme, the cutting stick is when rotating, contradicts with the baffle, and when contradicting with the arc sand grip, then can jack-up the baffle because of the arc sand grip, causes the baffle of this department to open, makes the bubble pass through, and when the cutting stick left arc sand grip and the baffle was contradicted once more, the baffle reset is closed, and the cutting stick is rotatory through next baffle once more, when the arc sand grip was passed through, this department baffle was opened, realizes the circulation.
In some optional technical schemes, a plurality of flow stopping plates are arranged on the inner wall of the gathering part, the flow stopping plates are distributed in an annular array, a plurality of spines are arranged on the flow stopping plates in a surrounding mode, and through holes penetrating through the shielding cover are formed in the transition part.
According to the technical scheme, when the baffle opens the bubble and passes through the flow stopping plate, the sharp point on the flow stopping plate can cut the bubble again, and when the rising part of the bubble passes through the through hole, the rising part of the bubble leaves the shielding cover from the through hole and rises along the curved surface of the transition part, so that the residence time of the bubble is prolonged again.
In some optional technical schemes, the top surface of the shielding cover is provided with an air outlet plate, the top surface of the air outlet plate is penetrated with a plurality of air holes, the air holes are distributed in a ring-shaped array, and the pore diameters of the air holes gradually decrease upwards along the height direction.
In the technical scheme, part of bubbles linearly rise after passing through the flow stop plate, react with the suspended filler through the air outlet plate, and can be split again to be smaller when passing through the air holes.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. In the invention, after the sewage to be treated in the mixing station is treated by a discharging platform, the sewage flows to sand-stone separation equipment through a discharging groove, the sewage after sand-stone separation flows to a stirring tank, the sewage is stirred and mixed by the stirring tank and then enters a plate-and-frame filter press, the separated water enters a liquid filtering tank after mud-water separation of the plate-and-frame filter press, the sewage is filtered and permeated by the liquid filtering tank and then is sent to a filtrate tank, the sewage is precipitated by the filtrate tank and then is sent to FNR equipment, and finally, the sludge and the water generated by the treated sewage are respectively sent to the stirring tank and a clean water tank for recycling;
2. When the aeration treatment is carried out, carbon dioxide bubbles exposed by the aeration pipe can be divided into smaller bubbles by the cyclone, the cyclone arm, the cutting rod and the stirring shaft, the effect of neutralization reaction with sewage can be enhanced when the bubbles are smaller, meanwhile, the baffle plate in the shielding cover and the shielding cover can delay the residence time of the bubbles in the reaction tank to a certain extent, so that the effect of neutralization reaction becomes more obvious, and the combination of the baffle plate and the shielding cover can enhance the aeration effect;
3. The mixed liquid reflux pipe is arranged in the reaction tank, so that the gas-water mixed liquid at the upper part of the reaction zone can be refluxed to the cyclone at the lower part, the reaction condition of the reaction tank is regulated, when the PH value in the tank is higher, the flow rate can be increased, the water in the reaction tank can be circulated in an accelerating way, and the reaction can be more sufficient and complete.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is an apparatus distribution diagram of a mixing station according to the present invention;
FIG. 2 is a schematic structural view of an FNR device of the present invention;
FIG. 3 is a schematic structural view of a reaction tank in the present invention;
FIG. 4 is a schematic view of the structure of an aeration apparatus according to the present invention;
Fig. 5 is a cross-sectional view of an aeration apparatus according to the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5at A;
FIG. 7 is a second cross-sectional view of the aeration apparatus of the present invention;
FIG. 8 is a cross-sectional view of a shadow mask of the present invention;
FIG. 9 is a schematic view of the structure of the cyclone and cutting bar of the present invention;
FIG. 10 is a cross-sectional view of a cyclone of the present invention;
FIG. 11 is a schematic view of a cutting bar according to the present invention;
fig. 12 is a schematic structural view of a baffle plate according to the present invention.
The reference numerals are represented as follows:
11. A reversing platform; 111. a discharge chute; 12. sand and stone separation equipment; 13. a clean water tank; 14. a stirring pool; 15. a liquid filtering pool; 16. a filtrate barrel; 17. a central control room; 18. a carbon dioxide tank; 2. an FNR device; 21. a reaction tank; 22. a filtration zone; 23. a precipitation zone; 24. an aeration pipe; 25. a mixed liquor return pipe; 3. a shielding cover; 31. a gathering part; 32. a transition section; 33. a through hole; 34. air holes; 4. a cyclone; 41. a swirl arm; 42. cutting a rod; 421. cutting the blade; 43. a stirring shaft; 5. a baffle; 51. arc convex strips; 6. and a flow stop plate.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention. It should be noted that the present invention is already in a practical development and use stage.
Example 1
As shown in fig. 1, this embodiment provides a sewage treatment system of a mixing station, including:
The sand and stone separating device comprises a discharging platform, sand and stone separating equipment 12, a central control room 17, a stirring pool 14, a plurality of clean water pools 13, a carbon dioxide tank 18, a plate-and-frame filter press, a filtrate pool 15, a filtrate bucket 16 and FNR equipment 2 which are sequentially arranged, wherein the discharging platform is arranged adjacent to the sand and stone separating equipment 12, one side of the discharging platform, which is close to the sand and stone separating equipment 12, is provided with a discharging groove 111, an outlet of the discharging groove 111 is positioned above the sand and stone separating equipment 12, and the FNR equipment 2 comprises a reaction pool 21, a filtering area 22 and a sedimentation area 23 which are arranged adjacently;
The aeration equipment is arranged in the reaction tank 21, a water inlet pipe is also communicated with the outer wall of the reaction tank 21, a plurality of suspended fillers are filled in the reaction tank 21, and an aeration pipe 24 is also arranged in the reaction tank 21;
The clear water tank 13 is connected with a clear water pipe and is respectively connected with a discharge chute 111 and a filtering area 22 of the FNR device 2, the FNR device 2 is also respectively connected with the clear water tank 13 and the stirring tank 14 through the clear water pipe, the carbon dioxide tank 18 is connected with an aeration pipe 24 in the FNR device 2 through the carbon dioxide pipe, an outlet of the sand and stone separation device 12 is connected with the stirring tank 14 through a mud sewage pipe, an inlet and an outlet of the filtrate tank 15 are respectively connected with a plate-frame filter press and a filtrate barrel 16 through the mud sewage pipe, the filtrate barrel 16 is connected with a water inlet pipe of a reaction tank 21 in the FNR device 2 through a filtrate pipeline pump, the discharge chute 111 is used for collecting sewage and mixing the clear water into the sand and stone separation device 12, the sand and stone separation device 12 is used for leading sewage after sand and stone separation into the stirring tank 14 through a screw pump, the sewage after the sewage is led into a plate-frame filter press again through the stirring tank 14 through the screw pump, the water after the sewage separation and the filtering is sent into the filtering tank 15 through the plate-frame filter press, the water in the filtrate barrel 15 is used for leading the water into the filtrate barrel 16 through the carbon dioxide pump and the filter press through the sedimentation tank 21, and the sewage tank is led into the filter tank 14 through the sedimentation tank and the aeration tank 14 through the carbon dioxide pipe and the sedimentation tank 21, and the sewage tank is simultaneously recycled into the sewage tank 14.
Specifically, the sewage treatment and recycling process of this embodiment is that firstly, a tank truck is driven onto a discharging platform, the tank truck is cleaned by water connected into a clean water tank, the cleaned and mixed sewage enters a sand-stone separation device 12 through a discharging groove 111, the sewage can also be water produced by separating waste concrete, washing water in a production site, partial rainwater and the like, sand-stone separation device 12 separates sand and stones doped in the sewage, the sewage after sand-stone separation enters a stirring tank 14 through a mud sewage pipe, an ultrasonic liquid level meter is arranged in the stirring tank 14, the liquid level of the sewage currently introduced into the stirring tank 14 can be detected, the stirring tank 14 works through an internal stirrer, the sewage is mixed and stirred, after the treatment is completed, the mixed sewage is sent into a plate-frame filter press through a mud sewage pipe by a screw pump, the plate-frame filter press filters the sewage, the sewage is filtered and separated into mud and water, the mud is transported out through an outward transportation device, the separated water enters a filtrate tank 15, the filtrate tank 15 filters the sewage, the filtered sewage enters a filtrate barrel 16 through a mud sewage pipe again, the diameter of the filtrate barrel 16 is 4000mm, the highest diameter of the filtrate barrel can accommodate 10t of sewage and is responsible for precipitating the filtered sewage, a float switch is arranged in the filtrate barrel 16 and is used for opening and closing the sewage between the filtrate barrel 16 and the filtrate tank 15, finally, the sewage in the filtrate barrel 16 enters a reaction tank 21 of an FNR device 2 through a filtrate pipeline pump and a water inlet pipe after precipitation, simultaneously, a carbon dioxide tank 18 introduces carbon dioxide into an aeration pipe 24 in the FNR device 2 through a carbon dioxide pipe, so that the carbon dioxide generates bubbles through the aeration pipe 24 to perform neutralization reaction with the sewage in the reaction tank 21, and the neutralized sewage contains calcium hydroxide, after entering the sedimentation zone 23 for sedimentation, the sewage is divided into upper water and lower sludge, the sludge is discharged into the stirring tank 14 through a sludge discharge pipe of the sedimentation zone 23 in the FNR equipment 2, the water firstly enters the filtering zone 22 through a sand filtering water distribution pipe, the water in the filtering zone 22 is sent into the clean water tank 13 through a clear water pipe, a central control room 17 is also arranged, the central control room 17 is responsible for controlling the valve switch of each pipeline and the operation of each equipment, and the filtering and recycling of the sewage and the environmental protection treatment are realized through the above working flows.
It should be noted that, the FNR device 2 is named Fluidized Neutralization Reactor, namely a fluidization neutralization reactor, the FNR device 2 can efficiently neutralize alkaline water containing a large amount of Ca 2+、Mg2+ and separate generated neutralized precipitate Ca (OH) 2, the obtained clean water can be reused in a mixing station, in addition, the carbon dioxide gas pipe, the clean water pipe and the slurry sewage pipe are all provided with a plurality of pipes for connecting two interactive device transmission media, the carbon dioxide gas pipe is mainly used for transmitting carbon dioxide, the clean water pipe is mainly used for conveying clean water or refluxing filtered clean water to the clean water tank 13, and the slurry sewage pipe is mainly used for conveying sewage with different concentrations between different devices.
Example 2
As shown in fig. 2 to 12, the aeration device comprises a cyclone 4 and a shielding cover 3, the cyclone 4 is positioned under the inner cavity of the shielding cover 3, a driving piece is connected to the bottom of the cyclone 4 in a transmission way, a plurality of cyclone arms 41 are arranged on the peripheral wall of the cyclone 4 in an annular array manner, a cutting rod 42 is further arranged on the peripheral wall of the cyclone 4, and the cutting rod 42 rotates around the center of the cyclone 4 and has a conical rotating track.
As shown in fig. 5 and 10, the inside of the cyclone 4 is hollow structure, the cyclone arm 41 is L-shaped and the center is penetrated with a channel, the cyclone arm 41 is communicated with the inner cavity of the cyclone 4, the filtrate tank 15 is also communicated with the mixed liquor return pipe 25, the input end of the mixed liquor return pipe 25 is positioned in the inner cavity of the cyclone 4, the cutting rod 42 is spirally wound with a plurality of cutting blades 421, the cyclone 4 is in a conical structure, the center of the top end of the cyclone 4 is also provided with a stirring shaft 43, the stirring shaft 43 is spiral and the diameter of one end far away from the cyclone 4 is gradually increased, and the bottom of the shielding cover 3 is provided with a through groove for the aeration pipe 24 and the mixed liquor return pipe 25 to penetrate.
As shown in fig. 5 to 8, the middle part of the shielding cover 3 is folded towards the central axis to form a folded part 31, the diameter of the top end of the shielding cover 3 is larger than that of the bottom end of the shielding cover 3, a transition part 32 is formed between the folded part 31 and the top end of the shielding cover 3, the transition part 32 is of a curved surface structure, a plurality of baffles 5 are hinged in the shielding cover 3 positioned in the folded part 31, and the top ends of the cutting bars 42 are abutted against the bottom surfaces of the baffles 5.
As shown in fig. 6 and 12, the bottom surface of the baffle 5 is provided with an arc-shaped protruding strip 51, the starting end or the ending end or the middle part of the arc-shaped protruding strip 51 is recessed toward the baffle 5, the total arc length of the arc-shaped protruding strip 51 positioned on the bottom surface of each baffle 5 is smaller than pi, and the radius of the arc-shaped protruding strip 51 is equal to the rotation radius of the cutting rod 42.
As shown in fig. 5, a plurality of flow stopping plates 6 are arranged on the inner wall of the gathering part 31, the flow stopping plates 6 are distributed in an annular array, a plurality of spines are arranged on the flow stopping plates 6 in a surrounding manner, and a through hole 33 penetrating through the shielding cover 3 is formed in the transition part 32.
As shown in fig. 8, the top surface of the shielding cover 3 is provided with an air outlet plate, the top surface of the air outlet plate is penetrated with a plurality of air holes 34, the air holes 34 are distributed in a ring-shaped array, and the aperture of the air holes 34 gradually decreases upwards along the height direction.
Specifically, aeration equipment sets up in the reaction tank 21 of FNR equipment 2, the one end of aeration pipe 24 is located the pond top of reaction tank 21 and is used for switching on the carbon dioxide trachea, the other end of aeration pipe 24 is located the bottom of the pool of reaction tank 21, still put in a plurality of suspension fillers in the reaction tank 21, the suspension condiment floats on the surface of water of the interior sewage of reaction tank 21, when aeration pipe 24 aerifys the water in the reaction tank 21, carbon dioxide can become the bubble in reaction tank 21 and rise, the carbon dioxide bubble produces neutralization reaction through with sewage and mixes, adjust the PH value of water, and carry out precipitation separation with the calcium ion that contains in the water, realize the purification of sewage, the water in the reaction tank 21 can carry out reciprocating cycle in the reaction tank 21 through the mixed solution back flow pipe, the gas-water mixture of reaction tank 21 upper portion can flow back to the swirler 4 of below, be provided with the PH meter in the reaction tank 21, when detecting that the PH value in the current reaction tank 21 is higher, the flow in-control chamber can increase the mixed solution flow in the pond, and increase the circulation number, make neutralization reaction more fully play the effect of PH regulation back flow pipe.
Regarding water aeration: the bottom of the reaction tank 21 is also provided with a shielding cover 3, the bottom of the shielding cover 3 is provided with a through hole 33, an aeration pipe 24 at the bottom of the tank is penetrated with the through hole 33 to enable the aeration hole 34 to be located below the shielding cover 3, the bottom of the reaction tank 21 is also provided with a mixed liquid return pipe 25, the mixed liquid return pipe 25 is used for injecting mixed liquid into a cavity in the cyclone 4, the bottom of the cyclone 4 is provided with a driving piece, the driving piece is used for controlling the cyclone 4 to rotate, the cyclone 4 rotates, meanwhile, the mixed liquid in the cyclone can be sprayed out through a cyclone arm 41, the cyclone arm 41 can spray the mixed liquid in the reaction tank 21 while following the cyclone 4 rapidly, the rising bubbles along the aeration hole 34 of the aeration pipe 24 can be blocked by the bottom surface of the cyclone 4 and rise along the edge of the cyclone 4, the rising bubbles can be cut and split into small bubbles by the cyclone arm 41, meanwhile, the mixed liquid sprayed by the cyclone arm 41 can also impact the bubbles, the rising bubbles can be enabled to be smaller, and the rising bubbles impacted by the cyclone arm 41 and the rising bubbles can continue along the rising gap between the cyclone 4 and the shielding cover 3.
When the cyclone 4 rotates, the cutting rod 42 connected to the peripheral wall of the cyclone 4, the cyclone 4 is in a conical structure, the central axis of the cutting rod 42 is intersected with the central axis of the cyclone 4, so that the rotating track of the cutting rod 42 is conical, a plurality of cutting blades 421 are further arranged on the cutting rod 42, the cutting rod 42 can cut the ascending small bubbles again by using the cutting blades 421 while rotating, the volume of the bubbles is further divided, the top end of the cutting rod 42 is positioned at the gathering part 31 of the shielding cover 3, the gathering part 31 of the shielding cover 3 is hinged with a plurality of baffle plates 5, the bottom of the baffle plates 5 is connected with arc convex strips 51, the baffle plates 5 can be semicircular, fan-shaped, triangular, quadrilateral and the like, the shape of the baffle plates 5 after being spliced in sequence is the same as the opening shape of the gathering part 31 of the shielding cover 3, the utility model provides a cutting rod, be used for shielding the portion of drawing in 31, the height of cutting rod 42 is higher than the height at arc sand grip 51 place, the radius of arc sand grip 51 equals the radius of rotation of cutting rod 42, therefore when cutting rod 42 rotates to the below of arc sand grip 51, cutting rod 42 can upwards jack up baffle 5 through arc sand grip 51, baffle 5 upwards turns up through the hinge that self set up, the opening appears in the confined portion of drawing in 31, and when cutting rod 42 rotated to the depressed part of arc sand grip 51, arc sand grip 51 loses the thrust, can set up the torsional spring on the hinge of baffle 5, fall down the reset promptly after losing the support, the depressed part of arc sand grip 51, the starting end, the bottom surface of terminating end and baffle 5 is the arc transitional surface, cutting rod 42 accessible arc transitional surface rotates smoothly to next baffle 5 department and jack up baffle 5 of here, realize the circulation.
The above-mentioned shutter 5 has two states, open or closed, in the closed state: the bubbles which are cut and split by the cyclone arms 41 and the cutting rods 42 and become smaller are temporarily stored below the gathering part 31 of the shielding cover 3, so that carbon dioxide bubbles can be stored in the reaction tank 21 for a certain time to fully perform neutralization reaction with sewage, and in the gathering process, the cutting rods 42 and the cyclone arms 41 work all the time, so that the situation that the bubbles which are split and become smaller are fused again and become large bubbles is difficult to happen, the small bubbles which are remained in the reaction tank can be stirred and split again, the neutralization reaction effect is realized further, when one baffle plate 5 is changed from the opening state to the closing state, because the torsional spring effect on the baffle 5 causes the baffle 5 to fall down and reset fast, the baffle 5 can realize an impact effect on water, the small bubbles under the reset baffle 5 can be scattered because of impact, the residence time of the small bubbles is further delayed, and because of the existence of the cutting rod 42, the small bubbles scattered because of water flow are not easy to gather and become large bubbles again, and in the opening state: when one of the baffles 5 is opened due to the rotation of the cutting bar 42, a plurality of small bubbles rapidly rise through the baffle 5 and reach above the gathering portion 31, and only one baffle 5 can be opened at a time due to the fact that only one cutting bar 42 is provided, as shown in fig. 5, the baffles 5 are divided into a first baffle 5 and a second baffle 5, preferably, the V-shaped grooves are formed on the mutually abutting surfaces of the baffle plates 5, so that collision between one baffle plate 5 and the adjacent baffle plate 5 can be avoided, when the first baffle plate 5 is opened, small bubbles gathered below the baffle plate 5 can only rise along the outlet of the first baffle plate 5, small bubbles below the first baffle plate 5 can directly rise along the outlet of the first baffle plate 5, bubbles below the second baffle plate 5 can only rise along the bottom surface of the second baffle plate 5 towards the opening of the first baffle plate 5, the rising time of bubbles below the second baffle plate 5 is delayed, otherwise, the effect can be achieved when the second baffle plate 5 is opened, and the cutting blades 421 on the cutting rods 42 are preferably in a plurality of groups, and each group of cutting blades 421 is arranged along the axis array of the cutting rod 42, at least one group of cutting blades 421 are in a curved arc shape, the arc surface is consistent with the rotation direction of the cutting rod 42, so that the cut small bubbles can remain in the rotation path of the cutting rod 42 to the greatest extent, and are split again through the stirring shaft 43 at the center of the cyclone 4, optimally, other cutting blades 421 except the arc-shaped cutting blades 421 can be attached with a spiral structure, rotation can be realized through arranging a bevel gear set or other rotation structures on the cutting rod 42, the splitting effect is enhanced, the stirring shaft 43 is spiral, the diameter of the stirring shaft along the height direction is gradually increased, the cutting rod 42 can form small vortex when rotating, so that small bubbles remain in the vortex to the greatest extent, and the small bubbles after being split can be sent to the upper part of the furling part 31 through the generated vortex when the baffle plate 5 is opened, so that the phenomenon that the small bubbles are difficult to rise and contact with suspended filler due to too high opening and closing frequency of the baffle plate 5 or too many baffle plates 5 is avoided, and the stirring shaft 43 is not required to be arranged when the number of the baffle plates 5 is small or the area is large, and the arrangement of the stirring shaft 43 does not influence the retention time of the small bubbles.
When the small bubbles pass through the baffle plate 5 and are positioned at the gathering part 31, the small bubbles can smoothly rise in the shielding cover 3, preferably, a flow stopping plate 6 is arranged above the baffle plate 5 in a surrounding manner, a plurality of spikes can be arranged on the inner wall of the flow stopping plate 6, the spikes can divide the rising small bubbles to a certain extent, the situation that the rising small bubbles are too much to generate partial convergence is avoided, through holes 33 penetrate through the transition part 32, part of rising bubbles leave the shielding cover 3 along the through holes 33 at the transition part 32, the bubbles rising along the through holes 33 rise along the arc-shaped peripheral wall of the transition part 32 according to the rising and floating characteristics of the bubbles, and the small bubbles can also rise along the time of remaining in the reaction tank 21 after rising along the transition part 32 while carrying out neutralization reaction with sewage in the reaction tank 21, and finally break at the floating suspended filler.
In addition to the above-mentioned way of carrying out neutralization reaction of the bubbles, most of the bubbles will rise to the top end of the shielding cover 3 after passing through the flow stop plate 6, and leave the shielding cover 3 along the air holes 34 on the air outlet plate, the longitudinal section shape of the air holes 34 is in a truncated cone shape, and the top diameter is smaller than the bottom diameter, therefore, when the bubbles leave the shielding cover 3 through the air holes 34, the bubbles can be divided again, and the effect of carrying out neutralization reaction with sewage can be achieved.
In summary, in the aeration apparatus of the present embodiment, carbon dioxide bubbles exposed to the aeration pipe 24 can be made smaller to a certain extent while the aeration treatment of the sewage is performed, and at the same time, the residence time of these divided small bubbles in the reaction tank 21 can be delayed, so that the carbon dioxide bubbles can sufficiently perform the neutralization reaction with the sewage in the reaction tank 21.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A mixing station sewage treatment system, comprising:
The device comprises a discharging platform, sand and stone separation equipment (12), a central control room (17), a stirring pool (14), a plurality of clean water tanks (13), a carbon dioxide tank (18), a plate-and-frame filter press, a filtrate tank (15), a filtrate barrel (16) and FNR equipment (2), wherein the discharging platform is arranged adjacent to the sand and stone separation equipment (12), a discharging groove (111) is formed in one side, close to the sand and stone separation equipment (12), of the discharging platform, an outlet of the discharging groove (111) is positioned above the sand and stone separation equipment (12), and the FNR equipment (2) comprises a reaction tank (21), a filtering area (22) and a sedimentation area (23) which are arranged adjacently;
The aeration equipment is arranged in the reaction tank (21), a water inlet pipe is also communicated with the outer wall of the reaction tank (21), a plurality of suspended fillers are filled in the reaction tank (21), and an aeration pipe (24) is also arranged in the reaction tank (21);
Wherein a clear water pipe is communicated with the clear water tank (13) and is respectively connected with a discharge chute (111) and a filtering area (22) of an FNR device (2), the FNR device (2) is also respectively connected with the clear water tank (13) and a stirring tank (14) through the clear water pipe, a carbon dioxide tank (18) is connected with an aeration pipe (24) in the FNR device (2) through the carbon dioxide pipe, an outlet of the sandstone separation device (12) is connected with the stirring tank (14) through a mud sewage pipe, an inlet and an outlet of the filtrate tank (15) are respectively connected with a plate-and-frame filter press and a filtrate drum (16) through mud sewage pipes, the filtrate drum (16) is connected with a water inlet pipe of a reaction tank (21) in the FNR device (2) through a filtrate pipeline pump, the discharge chute (111) is used for collecting sewage and mixing clear water into the sandstone separation device (12), the sewage after sandstone separation device (12) is introduced into the stirring tank (14), an outlet of the sandstone separation device (12) is introduced into the sewage tank (14) through a mud sewage pump, an inlet and a sewage tank (15) is introduced into a filter press through a filter press after being rotated to be introduced into a filter press (16) to a filter drum (16) through a filter press to be filtered in the filter drum (16) to be filtered by a filter drum (21) after being processed in the filter drum (2) through a filter press, simultaneously, the carbon dioxide tank (18) is used for introducing carbon dioxide into the aeration pipe (24), sewage treated by the aeration equipment is separated into sludge and water through precipitation, and the sludge and the water are respectively introduced into the stirring tank (14) and the clean water tank (13) through the clean water pipe, so that the recycling is realized.
2. A mixing station wastewater treatment system according to claim 1, wherein: aeration equipment includes swirler (4) and shields cover (3), swirler (4) are located shield cover (3) inner chamber under, the bottom transmission of swirler (4) is connected with the driving piece, annular array is provided with a plurality of swirl arms (41) on the periphery wall of swirler (4), still be provided with cutting stick (42) on the periphery wall of swirler (4), cutting stick (42) encircle the rotatory and rotatory orbit in center of swirler (4) is the toper.
3. A mixing station wastewater treatment system according to claim 2, wherein: the inside hollow out construction that is of swirler (4), swirl arm (41) are L type and center run through there is the passageway, swirl arm (41) with the inner chamber intercommunication of swirler (4), still put through in filtrate pond (15) has mixed liquid back flow (25), the input of mixed liquid back flow (25) is located the inner chamber of swirler (4), spiral on cutting rod (42) has a plurality of cutting blade (421), swirler (4) are conical structure, the top center of swirler (4) still is provided with (mixing) shaft (43), (mixing) shaft (43) are spiral and keep away from the diameter of swirler (4) one end increases gradually, make the logical groove that aeration tube (24) and mixed liquid back flow (25) wear to set up is offered to the bottom of shielding cover (3).
4. A mixing station wastewater treatment system according to claim 3 and wherein: the middle part of shielding cover (3) is drawn in towards the center pin and is formed folding portion (31), the top diameter of shielding cover (3) is greater than the bottom diameter of shielding cover (3), folding portion (31) with form transition portion (32) between the top of shielding cover (3), transition portion (32) are curved surface structure, are located folding portion (31) shielding cover (3) are interior to articulate has a plurality of baffles (5), the top of cutting stick (42) with the bottom surface conflict of baffle (5).
5. A mixing station wastewater treatment system as set forth in claim 4, wherein: the bottom surface of baffle (5) is provided with arc sand grip (51), the beginning, or the termination, or the middle part of arc sand grip (51) is towards baffle (5) form the sunken, be located every the radian total length of arc sand grip (51) of baffle (5) bottom surface is less than pi, the radius of arc sand grip (51) equals the radius of rotation of cutting stick (42).
6. A mixing station wastewater treatment system as set forth in claim 5, wherein: the inner wall of the folding part (31) is provided with a plurality of flow stopping plates (6), the flow stopping plates (6) are distributed in an annular array, the flow stopping plates (6) are provided with a plurality of spines in a surrounding mode, and the transition part (32) is provided with a through hole (33) penetrating through the shielding cover (3).
7. A mixing station wastewater treatment system as set forth in claim 5, wherein: the top surface of shielding cover (3) is provided with the gas outlet plate, the top surface of gas outlet plate runs through and has a plurality of gas pockets (34), gas pockets (34) are annular array and distribute, the aperture of gas pockets (34) upwards reduces along the direction of height gradually.
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