CN111760336A - Combined high-load sedimentation tank - Google Patents
Combined high-load sedimentation tank Download PDFInfo
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- CN111760336A CN111760336A CN202010744702.6A CN202010744702A CN111760336A CN 111760336 A CN111760336 A CN 111760336A CN 202010744702 A CN202010744702 A CN 202010744702A CN 111760336 A CN111760336 A CN 111760336A
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- inclined plate
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- mud
- sedimentation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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Abstract
The invention discloses a combined high-load sedimentation tank, which comprises: the invention relates to a sedimentation tank, which comprises a water inlet area, an advection sedimentation area, a heterodromous flow inclined plate sedimentation area and a water outlet area which are sequentially arranged along the water flow direction, wherein the water inlet area is connected with a water inlet pipe, the water outlet area is connected with a water outlet pipe, the water inlet area is communicated with the advection sedimentation area through a water distribution wall, the bottoms of the advection sedimentation area and the heterodromous flow inclined plate sedimentation area are provided with mud scraping components, the bottom of the advection sedimentation area is provided with a mud hopper, the mud hopper is internally connected with a mud pipe, a diversion baffle is arranged between the advection sedimentation area and the heterodromous flow inclined plate sedimentation area, the diversion baffle guides mud water to enter the heterodromous flow inclined plate sedimentation area from the lower part, the heterodromous flow inclined plate sedimentation area is provided with more than two inclined plates which are arranged in parallel with each other and form an included angle with the horizontal direction, the length of each inclined plate is 100-120cm, the treatment capacity of the sedimentation tank can be improved by 2-4 times, and the floor area can be reduced by more than 50%.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a combined high-load sedimentation tank.
Background
The horizontal sedimentation tank is the most basic type of sedimentation tank, has the advantages of simple structure, stable operation, convenient maintenance, strong impact load resistance and the like, but has the defects of low sedimentation efficiency, difficult uniform water distribution, large floor area, large difference before and after sludge sedimentation, uneven water outlet and the like.
The inclined plate sedimentation tank utilizes a shallow tank theory, and an inclined plate is added in the sedimentation tank to reduce the sedimentation distance of particulate matters, thereby improving the sedimentation efficiency, increasing the surface load of the sedimentation tank and reducing the occupied area, but the inclined plate has the defects of easy sludge accumulation and blockage, unstable effluent quality, poor impact load resistance and the like.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art and provides a combined high-load sedimentation tank, which can improve the treatment capacity of the sedimentation tank by 2 to 4 times and reduce the occupied area of the sedimentation tank by more than 50 percent.
According to an embodiment of the first aspect of the present invention, there is provided a combined high-load settling tank, comprising: the device comprises a water inlet area, an advection sedimentation area, a heterodromous flow inclined plate sedimentation area and a water outlet area which are sequentially arranged along the water flow direction, wherein the water inlet area is connected with a water inlet pipe, the water outlet area is connected with a water outlet pipe, the water inlet area is communicated with the advection sedimentation area through a water distribution wall, the bottom parts of the advection sedimentation area and the heterodromous flow inclined plate sedimentation area are provided with sludge scraping components, the bottom part of the advection sedimentation area is provided with a sludge hopper, the sludge hopper is internally connected with a sludge pipe, a flow guide baffle plate is arranged between the advection sedimentation area and the heterodromous flow inclined plate sedimentation area, the flow guide baffle plate guides sludge-water mixed liquid in the advection sedimentation area to enter the heterodromous flow inclined plate sedimentation area from the lower part, the heterodromous flow inclined plate sedimentation area is provided with more than two inclined plates which are arranged in parallel, and the distance between every two adjacent inclined plates is 8-10 cm.
Has the advantages that: the combined high-load sedimentation tank comprises: the device comprises a water inlet area, an advection sedimentation area, a heterodromous flow inclined plate sedimentation area and a water outlet area which are sequentially arranged along the water flow direction, wherein the water inlet area is connected with a water inlet pipe, the water outlet area is connected with a water outlet pipe, the water inlet area is communicated with the advection sedimentation area through a water distribution wall, the bottoms of the advection sedimentation area and the heterodromous flow inclined plate sedimentation area are provided with mud scraping components, the bottom of the advection sedimentation area is provided with a mud hopper, the mud hopper is internally connected with a mud pipe, a flow guide baffle is arranged between the advection sedimentation area and the heterodromous flow inclined plate sedimentation area, the flow guide baffle guides mud-water mixed liquid in the advection sedimentation area to enter the heterodromous flow inclined plate sedimentation area from the lower part, the heterodromous flow inclined plate sedimentation area is provided with more than two inclined plates which are arranged in parallel with each other and form an included angle with the horizontal direction, the, the complementary effect of the two is realized, the effect of the sedimentation tank is effectively improved, the surface load of the sedimentation tank is improved, and compared with a horizontal sedimentation tank, the treatment capacity of the sedimentation tank can be improved by 2-4 times, and the occupied area of the sedimentation tank is reduced by more than 50%.
According to the combined high-load sedimentation tank of the embodiment of the first aspect of the invention, the tank length ratio of the advection sedimentation zone and the counter-current inclined plate sedimentation zone ranges from 1 to 2.
According to the combined high-load sedimentation tank disclosed by the embodiment of the first aspect of the invention, the effective depth of the tank body of the advection sedimentation zone and the counter-current inclined plate sedimentation zone is 4-6 m.
According to the combined high-load sedimentation tank disclosed by the embodiment of the first aspect of the invention, a back-washing perforated pipe is arranged below the counter-flow inclined plate sedimentation zone.
According to the combined high-load sedimentation tank provided by the embodiment of the first aspect of the invention, the height from the bottom of the tank below the inclined plate is 2-3m, and the liquid level height of the clean water area above the inclined plate is 70-100 cm.
According to the combined high-load sedimentation tank disclosed by the embodiment of the first aspect of the invention, the sludge scraping component comprises a driving device, a chain, a scraping plate, a guide rail and a travelling crane, the starting point of the sludge scraping component is arranged in front of the flow guide baffle, the sludge scraping component is used for scraping sludge into the sludge hopper, the running track of the scraping plate is that the sludge precipitated at the bottom of the advection sedimentation zone is firstly scraped into the sludge hopper in the counter-current direction, then the sludge runs to the tail end of the counter-current inclined plate sedimentation zone in the counter-current direction, then the sludge at the bottom of the advection sedimentation zone and the counter-current inclined plate sedimentation zone is sequentially scraped into the sludge hopper in the counter-current direction, and finally the sludge is returned to the front of the flow guide baffle in the counter-current direction.
According to the combined high-load sedimentation tank disclosed by the embodiment of the first aspect of the invention, a plurality of rows of openings are arranged on the side surface of the distribution wall, and the openings are positioned at the middle upper part of the distribution wall.
According to the combined high-load sedimentation tank of the embodiment of the first aspect of the invention, the inclination angle of the inclined plates is 60 °.
According to the combined high-load sedimentation tank of the embodiment of the first aspect of the invention, the counter-current inclined plate sedimentation zone further comprises a plurality of effluent weirs.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a sectional view B-B of fig. 1.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, a combined high load settling tank includes: the water inlet area 100, the advection sedimentation zone 200, the heterotropism swash plate sedimentation zone 300, the play pool 400 that set gradually along the rivers direction, the area 100 that intakes is connected with inlet tube 110, it is connected with outlet pipe 410 to go out the pool 400, intake and communicate through distribution wall 120 between the area 100 and the advection sedimentation zone 200, distribution wall 120 side is provided with the multirow trompil, and the trompil is located distribution wall 120 well upper portion for muddy water mixed liquid evenly gently gets into the advection sedimentation zone 200, reduce the disturbance of rivers. Wherein the advection sedimentation zone 200 is provided with a mud scraping component 210, the bottom of the advection sedimentation zone 200 is provided with a sludge hopper 220, and a sludge pipe 230 is connected in the sludge hopper 220; a flow guide baffle 240 is arranged between the advection sedimentation zone 200 and the heterodromous flow inclined plate sedimentation zone 300, and the flow guide baffle 240 guides the mud-water mixed liquid in the advection sedimentation zone 200 to enter the heterodromous flow inclined plate sedimentation zone 300 from the lower part; the inclined plates 310 which are arranged in parallel and form an included angle with the horizontal direction are arranged in the anisotropic flow inclined plate sedimentation area 300, the length of each inclined plate 310 is 100 plus 120cm, the installation angle of each inclined plate 310 is 60 degrees, and the distance between every two adjacent inclined plates 310 is 8-10 cm.
The combined high-load sedimentation tank organically couples the advection sedimentation technology and the inclined plate sedimentation technology, realizes the advantage complementation of the advection sedimentation technology and the inclined plate sedimentation technology, efficiently improves the efficiency of the sedimentation tank, improves the surface load of the sedimentation tank, can improve the treatment capacity of the sedimentation tank by 2-4 times compared with the advection sedimentation tank, and reduces the occupied area of the sedimentation tank by more than 50 percent.
In one embodiment, the space between the advection precipitation zone 200 and the counter-current inclined plate precipitation zone 300 is divided into two parts by the diversion baffle 240, and the two parts guide the slurry-water mixed liquid in the advection precipitation zone 200 from the lower part into the counter-current inclined plate precipitation zone 300 through the diversion baffle 240. Wherein, the ratio of the length of the advection sedimentation zone 200 to the length of the heterodromous flow inclined plate sedimentation zone 300 is 1-2. Further, the effective depth of the tank body of the advection sedimentation zone 200 and the heterodromous flow inclined plate sedimentation zone 300 is 4-6 m.
It is understood that a backwash perforated pipe 320 is provided below the counter-current inclined plate settling zone 300. Specifically, the backwash perforated pipe 320 is disposed at the lower portion of the inclined plate 310, which further ensures smooth separation of mud and water in the counter flow inclined plate settling zone 300, and solves the problem of easy blockage of the inclined plate 310.
In this embodiment, the counter-current inclined plate sedimentation zone 300 comprises inclined plates 310, back-washing perforated pipes 320 and a plurality of effluent weirs 330. The height from the bottom of the tank below the inclined plate 310 is 2-3m, and the liquid level height of the clear water area above the inclined plate 310 is 70-100 cm.
Referring to fig. 2, the sludge scraping assembly 210 comprises a driving system, chains, scraping plates, guide rails and a travelling crane, the advection settling zone 200 and the incongruous flow inclined plate settling zone 300 share the sludge discharging assembly 210, the starting point of the sludge discharging assembly 210 is arranged in front of the diversion baffle 240, the sludge scraping assembly 210 is used for scraping sludge settled at the bottom of the pond in the advection settling zone 200 and the incongruous flow inclined plate settling zone 300 into the sludge hopper 220, and the sludge scraping assembly 210 is arranged at the bottom of the pond. The scraper plate running track of the sludge scraping component 210 is that sludge precipitated at the bottom of the advection sedimentation zone 200 is firstly scraped into the sludge hopper 220 in the counter-current direction, then the sludge travels to the tail end of the incongruous flow inclined plate sedimentation zone 300 in the counter-current direction, then the sludge at the bottom of the advection sedimentation zone 200 and the incongruous flow inclined plate sedimentation zone 300 is sequentially scraped into the sludge hopper 220 in the counter-current direction, and finally the sludge returns to the front of the flow guide baffle 240 in the counter-current direction, and then the next sludge scraping period is started. Through the setting of the orbit of scraping mud subassembly 210, realize that the high mud volume district scrapes more, the low mud volume district scrapes less, has realized the smooth and easy mud of arranging of the whole cell body of sedimentation tank, has reduced whole operation energy consumption simultaneously.
The combined high-load sedimentation tank divides the main body of the sedimentation tank into an advection sedimentation zone 200 and a heterodromous flow inclined plate sedimentation zone 300, and the advection sedimentation zone 200 is arranged in front of the heterodromous flow inclined plate sedimentation zone 300, so that sludge-water mixed liquid entering the sedimentation tank can fully play the free sedimentation function of sludge in the advection sedimentation zone 200, and most of high-concentration sludge is separated out in the advection sedimentation zone 200 to form a sludge-water interface quickly.
The sludge concentration of the mixed liquid entering the counter-current inclined plate sedimentation area 300 is obviously lower than that of the advection sedimentation area 200, so that on one hand, the sludge load of the counter-current inclined plate sedimentation area 300 is reduced, the sedimentation advantage of an inclined plate shallow pool can be fully exerted, and the effluent quality is improved; on the other hand, the sludge accumulation and blockage phenomenon between the inclined plates is reduced, and the problem that the inclined plates are easy to accumulate and block is solved.
Through the optimization of the operation mode of the sludge scraping component 210 arranged at the bottom of the sedimentation tank, the sludge with high yield in the advection sedimentation zone 200 can be quickly moved out of the tank body, and the smooth sludge discharge of the whole sedimentation tank body is realized.
The inclined plate 310 is periodically backwashed through the backwash perforated pipe 320 arranged at the lower part of the counter-current inclined plate sedimentation area 300, so that the possibility of mud accumulation and blockage of the inclined plate 310 is further reduced, and a good operating environment is provided for rapid and smooth separation of mud and water in the counter-current inclined plate sedimentation area 300.
The combined high-load sedimentation tank has the advantages that the sludge-water separation efficiency is efficiently improved, the effluent quality is improved, and compared with the traditional process, the combined high-load sedimentation tank can improve the treatment capacity of the sedimentation tank by 2-4 times, reduce the occupied area of the sedimentation tank by more than 50 percent, and save land resources.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. A modular high-load settling tank, comprising:
the device comprises a water inlet area, an advection sedimentation area, a heterodromous flow inclined plate sedimentation area and a water outlet area which are sequentially arranged along the water flow direction, wherein the water inlet area is connected with a water inlet pipe, the water outlet area is connected with a water outlet pipe, and the water inlet area is communicated with the advection sedimentation area through a water distribution wall;
the bottom of the advection sedimentation zone and the bottom of the heterodromous flow inclined plate sedimentation zone are provided with sludge scraping assemblies, the bottom of the advection sedimentation zone is provided with a sludge hopper, and a sludge pipe is connected in the sludge hopper;
a flow guide baffle is arranged between the advection sedimentation zone and the heterodromous flow inclined plate sedimentation zone, and the flow guide baffle guides the mud-water mixed liquid in the advection sedimentation zone to enter the heterodromous flow inclined plate sedimentation zone from the lower part;
the anisotropic flow inclined plate sedimentation zone is provided with more than two inclined plates which are arranged in parallel, the inclined plates form included angles with the horizontal direction, the length of each inclined plate is 100-120cm, and the distance between every two adjacent inclined plates is 8-10 cm.
2. The modular high-load settling pond of claim 1, wherein: the ratio of the length of the advection sedimentation zone to the length of the heterotropic flow inclined plate sedimentation zone is 1-2.
3. The modular high-load settling pond of claim 1, wherein: the effective depth of the pond bodies in the advection sedimentation zone and the heterodromous flow inclined plate sedimentation zone is 4-6 m.
4. The modular high-load settling pond of claim 1, wherein: and a back-washing perforated pipe is arranged below the counter-current inclined plate sedimentation zone.
5. The modular high-load settling pond of claim 1, wherein: the height from the bottom of the tank below the inclined plate is 2-3m, and the liquid level height of the clear water area above the inclined plate is 70-100 cm.
6. The modular high-load settling pond of claim 1, wherein: the mud scraping component comprises a driving device, a chain, a scraper plate, a guide rail and a travelling crane, the starting point of the mud scraping component is arranged in front of the flow guide baffle, the mud scraping component is used for scraping mud into the mud bucket, the running track of the scraper plate is firstly in the reverse water flow direction, the mud precipitated at the bottom of the advection sedimentation zone is scraped into the mud bucket, then the mud goes to the tail end of the incongruous flow inclined plate sedimentation zone along the water flow direction, then the counter water flow direction is sequentially in the advection sedimentation zone and the mud precipitated at the bottom of the incorgruous flow inclined plate sedimentation zone are scraped into the mud bucket, and finally the mud returns to the front of the flow guide baffle along the water flow direction.
7. The modular high-load settling pond of claim 1, wherein: the side surface of the water distribution wall is provided with a plurality of rows of open pores, and the open pores are positioned at the middle upper part of the water distribution wall.
8. The modular high-load settling pond of claim 1, wherein: the counter-current inclined plate sedimentation zone also comprises a plurality of effluent weirs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744702.6A CN111760336A (en) | 2020-07-29 | 2020-07-29 | Combined high-load sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744702.6A CN111760336A (en) | 2020-07-29 | 2020-07-29 | Combined high-load sedimentation tank |
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| Publication Number | Publication Date |
|---|---|
| CN111760336A true CN111760336A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010744702.6A Pending CN111760336A (en) | 2020-07-29 | 2020-07-29 | Combined high-load sedimentation tank |
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|---|---|
| CN (1) | CN111760336A (en) |
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2020
- 2020-07-29 CN CN202010744702.6A patent/CN111760336A/en active Pending
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