CN215886632U - Horizontal flow type sedimentation tank for advanced sewage treatment - Google Patents
Horizontal flow type sedimentation tank for advanced sewage treatment Download PDFInfo
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- CN215886632U CN215886632U CN202122249183.9U CN202122249183U CN215886632U CN 215886632 U CN215886632 U CN 215886632U CN 202122249183 U CN202122249183 U CN 202122249183U CN 215886632 U CN215886632 U CN 215886632U
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Abstract
The utility model discloses a horizontal flow type sedimentation tank for advanced sewage treatment, which comprises a mixing tank, a folded plate flocculation tank and a horizontal flow sedimentation tank, wherein the mixing tank is connected with the folded plate flocculation tank, a mixing device is arranged in the mixing tank, the folded plate flocculation tank comprises opposite folded plates, parallel folded plates and parallel straight plates, the folded plate flocculation tank is connected with the horizontal flow sedimentation tank, and the horizontal flow sedimentation tank is connected with a filtering tank. According to the utility model, after the chemicals are added into the mixing tank, the mixed chemicals directly enter the folded plate flocculation tank to perform three-stage flocculation operation, so that the flocculation reaction time is sufficient, and the flocculation effect is good.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a horizontal flow type sedimentation tank for advanced sewage treatment.
Background
The efficient sedimentation tank has wide application range in the upgrading and reconstruction project of the sewage treatment plant in China, for example, the upgrading and reconstruction of a certain sewage treatment plant, and the process flow after the water plant is coarse grating-water inlet pump room-fine grating-sand basin-primary sedimentation tank-A20 tank-secondary sedimentation tank-aeration biological filter tank-efficient sedimentation tank; the second-stage upgrading of another sewage treatment plant adopts a regulating tank, a hydrolysis acidification tank, a multi-stage enhanced krypton removal improved A2O biochemical tank, an ozone contact tank, a high-efficiency sedimentation tank, a biological filter and a disinfection process. Firstly, a large number of large flocculated objects appear when water flows out from the water inlet pipeline after the chemicals are added into the water and then flows out to the inclined tube sedimentation tank, and the large flocculated objects cannot settle in the inclined tube and can only be manually cleaned; meanwhile, the design place of the flocculation tank is small, the flocculation reaction time is not enough, the flocculation effect is not good enough, the water flow impact is large, and the mud is easy to turn over.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides the horizontal flow type sedimentation tank for advanced sewage treatment, the mixed tank is directly fed with chemicals and then enters the folded plate flocculation tank for three-stage flocculation operation, the flocculation reaction time is enough, and the flocculation effect is better.
The utility model adopts the following technical scheme:
the utility model provides a sewage advanced treatment's advection type sedimentation tank, is including mixing tank, folded plate flocculation basin and advection sedimentation tank, the folded plate flocculation tank is connected to the mixing tank, is equipped with mixing arrangement in the mixing tank, and the folded plate flocculation tank includes relative folded plate, parallel straight board, the advection sedimentation tank is connected to the folded plate flocculation tank, and filtering ponds are connected to the advection sedimentation tank.
Preferably, the integral bottom of the horizontal sedimentation tank is provided with a sludge discharge pipe.
Preferably, the horizontal flow sedimentation tank is internally provided with a perforated wall, and the water flow is uniformly distributed on the whole section of the sedimentation tank through the perforated wall.
Preferably, an outlet triangular weir is arranged at one end of the horizontal flow sedimentation tank connected with the filtering tank.
Preferably, the filter tank is a fiber cloth filter tank.
Preferably, a truss type suction dredge is arranged on the horizontal sedimentation tank.
Preferably, the mixing device is a blender.
Compared with the prior art, the utility model has the following advantages:
1. the utility model provides a horizontal flow sedimentation tank for advanced sewage treatment, which directly enters a folded plate flocculation tank for three-stage flocculation operation after adding chemicals into a mixing tank, and has enough flocculation reaction time and better flocculation effect.
2. The horizontal flow sedimentation tank has the advantages of large surface area, strong adaptability to impact load, water quantity and temperature change, good sedimentation effect, high solid suspended matter removal rate and stable effluent quality.
3. A series of problems such as inclined pipe fouling and blocking can not occur in the horizontal flow type sedimentation tank, and the performance of the activated sludge is better.
4. Compared with a circular mud scraper, the truss type mud suction machine adopted by the mud discharging measure does not disturb a water body when sucking and discharging the mud, can effectively avoid the displacement of the mud, does not need to frequently clean the tank body, and does not influence production operation.
Drawings
FIG. 1 is a schematic structural diagram of a horizontal flow type sedimentation tank.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a cross-sectional view taken along line C-C of fig. 1.
Fig. 5 is a cross-sectional view taken along line D-D of fig. 1.
Fig. 6 is a cross-sectional view E-E of fig. 1.
Fig. 7 is a sectional view F-F of fig. 1.
Fig. 8 is a sectional view taken along line G-G of fig. 1.
In the figure, a mixing tank 1, a folded plate flocculation tank 2, opposite folded plates 2-1, parallel folded plates 2-2, parallel straight plates 2-3, a horizontal flow sedimentation tank 3, a perforated wall 3-1, a sludge discharge pipe 4, a truss type suction dredge 5 and a stirrer 6.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
The high-efficiency sedimentation tank in the prior art finds that the use effect is unstable in the actual operation process, and the specific performance problem is as follows:
1. a large number of large flocculation objects appear when water flows out from the water inlet pipeline after the medicine is added to the inclined tube sedimentation tank, the large flocculation objects cannot be settled in the inclined tube, and finally the large flocculation objects can only be manually cleaned, so that the production is influenced frequently by the cleaning times.
2. The design place of the flocculation tank is small, the flocculation reaction time is short, the flocculation effect is not good enough, the water flow impact is large, and the mud is easy to turn over.
3. The requirement on the control of the medicament dosage is high, and the dosage of pac at the front end can influence the performance of activated sludge at the later stage.
4. The removal rate of solid suspended substances is not high enough, and the effluent quality is not good.
5. The mud discharging facility of the inclined tube sedimentation tank is a circular mud scraper and a screw pump for discharging mud, mud is easily accumulated at the tail end of the inclined tube to cause blockage, the size of the inclined tube can also influence the sedimentation effect, the material of the inclined tube is easy to age, and the cost consumption is large.
In order to solve the problems, as shown in fig. 1 to 8, the utility model provides a horizontal flow type sedimentation tank for advanced sewage treatment, which comprises a mixing tank, a folded plate flocculation tank and a horizontal flow sedimentation tank, wherein the mixing tank is connected with the folded plate flocculation tank, a mixing device is arranged in the mixing tank, the folded plate flocculation tank comprises opposite folded plates, parallel folded plates and parallel straight plates, the folded plate flocculation tank is connected with the horizontal flow sedimentation tank, and the horizontal flow sedimentation tank is connected with a filtering tank. According to the utility model, after the chemicals are added into the mixing tank, the mixed chemicals directly enter the folded plate flocculation tank to perform three-stage flocculation operation, so that the flocculation reaction time is sufficient, and the flocculation effect is good.
Specifically, the water discharged from the MSBR tank firstly enters the mixing tank to be added with the medicament, and then enters the folded plate flocculation tank after the quick and efficient mixing of the mixing device, the folded plate flocculation tank is divided into three sections which comprise relative folded plates, parallel folded plates and parallel straight plates, water flow sequentially passes through the three structures, the speed gradient in the three processes is from large to small, flocculation particles are from small to large, and the water flow continuously flows among the folded plates so as to form a plurality of small vortexes, and the particle collision flocculation effect is improved. Then enters a horizontal flow sedimentation tank and finally enters a filtering tank.
As shown in fig. 3, it is specific that the relative folded plate comprises a plurality of first folded plate structures, the first folded plate structures comprise connecting rods fixedly arranged in a folded plate flocculation basin and vertical plate structures connected to one ends of the connecting rods, the first folded plate structures are arranged in the folded plate flocculation basin in a staggered manner one on the other, two adjacent first folded plate structures arranged in a staggered manner are arranged relatively, and water flows sequentially between the first folded plate structures and flows to parallel folded plates.
As shown in fig. 4, the parallel folded plate includes a plurality of second folded plate structures, the folded plate structure is fixed to be set up in the connecting rod of folded plate flocculation basin and connect in the one last perpendicular plate structure of connecting rod to second folded plate structure misplaces one on the other and sets up in the folded plate flocculation basin, and two adjacent second folded plate structures that misplace set up are parallel arrangement, and rivers loop through flowing to between the parallel straight board between the second folded plate structure.
As shown in fig. 5, the parallel straight plates comprise a plurality of straight plate structures, the straight plate structures comprise connecting rods fixedly arranged in the folded plate flocculation tank and straight plates connected to one end of the connecting rods, the straight plate structures are arranged in the folded plate flocculation tank in a staggered manner one on the other, two adjacent straight plate structures arranged in a staggered manner are arranged in parallel, water flows sequentially flow between the straight plate structures to flow into the water inlet area between the parallel straight plates, and the water flows enter the horizontal flow sedimentation tank through the water inlet area.
The integral bottom of the advection type sedimentation tank is provided with a sludge discharge pipe, in particular to a perforated sludge discharge pipe, which is used for sludge discharge.
The horizontal flow sedimentation tank is internally provided with a perforated wall, and water flow is uniformly distributed on the whole section of the sedimentation tank through the perforated wall, so that the fluctuation of the water flow is reduced.
And one end of the horizontal flow sedimentation tank connected with the filtering tank is provided with an outlet triangular weir, and the outlet triangular weir ensures that the water after sedimentation can uniformly flow into the subsequent filtering tank.
The filter tank is a fiber cloth filter tank, the problems that the sand filter tank is troublesome to replace and large in occupied area are solved, water does not need to be stored in the backwashing process, and the operation is convenient.
The truss type suction dredge is arranged on the horizontal sedimentation tank, so that a water body is not disturbed when sludge is sucked and discharged, sludge displacement can be effectively avoided, the tank body does not need to be cleaned frequently, and production operation is not influenced.
The mixing device is a stirrer, and the mixing of the sewage and the medicament is accelerated through the stirrer.
In this embodiment, the horizontal flow sedimentation tank is divided into 2 grids, each grid is divided into 2 groups, the plane size is 80m × 16m, and the design flow Q of each grid is 1700m3The horizontal flow rate is 11mm/s, the settling time is 2h, the effective water depth is 2.7m, and the surface hydraulic load is 1.33m3/m2H. In the embodiment, the surface area of the horizontal flow sedimentation tank body is large, the adaptability to impact load, water quantity and temperature change is strong, the sedimentation effect is good, the removal rate of suspended solid is high, and the effluent quality is stable.
Compared with the traditional high-efficiency sedimentation tank, the horizontal flow sedimentation tank has the advantages that a series of problems such as inclined pipe fouling and blocking can not occur, and the performance of activated sludge is better.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Claims (7)
1. The utility model provides a sewage advanced treatment's advection formula sedimentation tank, its characterized in that, is including mixing pond, folded plate flocculation basin and advection sedimentation tank, the folded plate flocculation tank is connected to the mixing pond, is equipped with mixing arrangement in the mixing pond, and the folded plate flocculation tank includes relative folded plate, parallel straight board, the advection sedimentation tank is connected to the folded plate flocculation tank, and filtering ponds are connected to the advection sedimentation tank.
2. The advection-type settling pond for advanced wastewater treatment as claimed in claim 1, wherein a sludge discharge pipe is arranged at the bottom of the entire advection-type settling pond.
3. The horizontal flow type sedimentation tank for advanced wastewater treatment as claimed in claim 1, wherein the horizontal flow type sedimentation tank is provided with perforated walls through which water flows are uniformly distributed over the entire cross section of the sedimentation tank.
4. The horizontal flow type sedimentation tank for advanced wastewater treatment as claimed in claim 1, wherein an outlet triangular weir is arranged at the end of the horizontal flow type sedimentation tank connected with the filtering tank.
5. The horizontal flow type sedimentation tank for advanced wastewater treatment as claimed in claim 1, wherein the filtration tank is a fiber cloth filter.
6. The horizontal flow type sedimentation tank for advanced wastewater treatment as claimed in claim 1, wherein a truss type suction dredge is arranged on the horizontal flow type sedimentation tank.
7. The horizontal flow type sedimentation tank for advanced wastewater treatment as claimed in claim 1, wherein the mixing device is a stirrer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122249183.9U CN215886632U (en) | 2021-09-16 | 2021-09-16 | Horizontal flow type sedimentation tank for advanced sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122249183.9U CN215886632U (en) | 2021-09-16 | 2021-09-16 | Horizontal flow type sedimentation tank for advanced sewage treatment |
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| CN215886632U true CN215886632U (en) | 2022-02-22 |
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| CN202122249183.9U Active CN215886632U (en) | 2021-09-16 | 2021-09-16 | Horizontal flow type sedimentation tank for advanced sewage treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117504380A (en) * | 2024-01-08 | 2024-02-06 | 成都三扬新材科技有限公司 | Waste liquid recovery device and method for processing environment-friendly water-based industrial paint |
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2021
- 2021-09-16 CN CN202122249183.9U patent/CN215886632U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117504380A (en) * | 2024-01-08 | 2024-02-06 | 成都三扬新材科技有限公司 | Waste liquid recovery device and method for processing environment-friendly water-based industrial paint |
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