CN220047168U - High-efficient combination formula sedimentation tank of mud sediment suspension - Google Patents
High-efficient combination formula sedimentation tank of mud sediment suspension Download PDFInfo
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- CN220047168U CN220047168U CN202320429111.9U CN202320429111U CN220047168U CN 220047168 U CN220047168 U CN 220047168U CN 202320429111 U CN202320429111 U CN 202320429111U CN 220047168 U CN220047168 U CN 220047168U
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- sedimentation tank
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 53
- 239000000725 suspension Substances 0.000 title claims abstract description 52
- 239000013049 sediment Substances 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 239000010802 sludge Substances 0.000 claims abstract description 50
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000005189 flocculation Methods 0.000 claims description 13
- 230000016615 flocculation Effects 0.000 claims description 13
- 239000002245 particle Substances 0.000 abstract description 22
- 230000001174 ascending effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000000084 colloidal system Substances 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 description 14
- 238000005192 partition Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 229940037003 alum Drugs 0.000 description 6
- 239000000701 coagulant Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the field of water treatment and discloses a sludge suspension efficient combined sedimentation tank which comprises a water distribution area, a reflocculating auxiliary area, a sludge suspension area, an inclined plate area and a clear water area, wherein the water outlet end of the water distribution area is connected with the water inlet end of the reflocculating auxiliary area, the water outlet end of the reflocculating auxiliary area is connected with the water inlet end of the sludge suspension area, the water outlet end of the sludge suspension area is connected with the water inlet end of the inclined plate area, the water outlet end of the inclined plate area is connected with the water inlet end of the clear water area, a plurality of groups of vertical baffle plates are arranged in the reflocculating auxiliary area at equal intervals, a plurality of groups of inclined plates are arranged in the inclined plate area at equal intervals, the sludge suspension efficient combined sedimentation tank forms a sludge suspension area in the process that the ascending water flow falls down after being precipitated by the inclined plates through the water distribution area and the sludge in the sludge suspension area, and the colloid in the ascending water flow further contacts with the sludge in the sludge suspension area to form large sludge particles again, so that the sludge particles in the ascending water flow is favorable for separating mud and separating of a separation section.
Description
Technical Field
The utility model relates to the field of water treatment, in particular to a sludge suspension efficient combined sedimentation tank.
Background
According to the shallow pool theory (under the condition of a certain effective volume of the sedimentation pool, the sedimentation area is increased, so that the removal rate of particles is improved), the inclined plate sedimentation pool is gradually developed. The inclined plate sedimentation tanks are classified according to the flow direction of water flow, and can be classified into sedimentation tanks according to the direction of water flow, and can be classified into upward flow, horizontal flow and downward flow. At present, an upward flow inclined plate (pipe) sedimentation tank is mainly adopted in China, namely, water flows in from the bottom of the inclined plate (pipe) and flows out from the upper part, sludge slides out from the lower part, and water and the sludge move in opposite directions.
But the effect on low turbidity water treatment is not ideal for conventional upward flow inclined plate (tube) sedimentation tanks. After coagulant is added into low-turbidity water, the coagulation reaction speed is very slow, and formed alum flowers are tiny and easy and are not easy to sink, so that the reaction precipitation effect is poor, and therefore, the high-efficiency combined sedimentation tank for suspending mud residue is provided.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a sludge suspension efficient combined sedimentation tank, and aims at solving the problem of uneven water distribution of the traditional inclined tube inclined plate sedimentation tank, and the problem of uniform water distribution can be effectively solved by placing a vertical baffle at a water inlet. The vertical partition plate can realize high-resistance water distribution to ensure uniform water distribution of the sedimentation tank unit, and prevent poor sedimentation effect caused by uneven water distribution. Moreover, the vertical partition plates can be arranged to perform deflocculation on the alum blossom in the partition plate area, so that collision is further promoted, alum blossom particles further flocculate and grow up, and turbidity and SS can be effectively removed.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high-efficient combination formula sedimentation tank of mud sediment suspension, includes water distribution area, the region is assisted in the flocculation again, mud sediment suspension district, swash plate district and clear water district, water distribution area's play water end is connected the income water end that the region was assisted in the flocculation again, and the play water end that the region was assisted in the flocculation again is connected the income water end in mud sediment suspension district, and the income water end in swash plate district is connected to mud sediment suspension district's play water end, and clear water district's income water end is connected to swash plate district's play water end, and the inside equidistance that the region was assisted in the flocculation again is provided with the vertical baffle of multiunit, and the inside equidistance in swash plate district is provided with the swash plate of multiunit slope.
Preferably, the water inlet of the water distribution area is a perforated wall.
Preferably, the inclined plate is plate-shaped or tubular, and the inclination angle between the inclined plate and the horizontal direction is 45-70 degrees.
Preferably, the length of the inclined plates is 0.5-1.2 m, the distance between two adjacent inclined plates is 10-35mm, and the thickness of the inclined plates 7 is 0.85-1.25mm.
Preferably, the distance between two adjacent vertical partition plates is 30-100mm, and the length of the inclined plate is 200-500mm.
Preferably, the height of the sludge suspension area is 200-500mm.
(III) beneficial effects
Compared with the prior art, the utility model provides the sludge suspension efficient combined sedimentation tank, which has the following beneficial effects:
1. in the traditional inclined plate (pipe) sedimentation tank, the sludge suspension high-efficiency combined sedimentation tank needs to pass through a section of rectifying section before entering the sedimentation tank to improve the shock resistance of the sedimentation tank and reduce the rising flow velocity, thereby playing a role in enhancing the sedimentation effect. According to the utility model, a section of vertical partition plate (pipe) is additionally arranged after water inflow of the traditional inclined plate sedimentation tank, so that the functions of preventing muddy water from flowing in different weight and rectifying rising water flow are achieved, water can be effectively and uniformly distributed, and the rectifying function is achieved.
2. The high-efficiency combined sedimentation tank for suspending the sludge is characterized in that a sludge suspending area is formed in the falling process of the ascending water flow after the sludge with large particles is precipitated by the inclined plate through the water distribution area, and colloid in the ascending water flow is further in contact with the sludge in the sludge suspending area for flocculation and is recombined into large sludge particles, so that the sludge-water separation of a separation section is facilitated.
3. The mud suspending high-efficiency combined sedimentation tank combines the inclined plate sedimentation tank to reduce the dosage of the device due to the formation of the mud suspending layer. When the raw water load changes greatly, the water quality of the effluent can be stabilized without changing the dosage. The sludge suspension layer forms larger sludge flocs and higher density, so that the treatment of low-turbidity water can be effectively considered.
4. This high-efficient combination formula sedimentation tank of mud sediment suspension, in traditional swash plate sedimentation tank newly-increased mud sediment suspension district, when the quality of water that intakes is high turbidity water, can further improve coagulating sedimentation effect through mud sediment suspension district, when the quality of water that intakes is low turbidity water, can improve out water quality through behind the mud sediment suspension district, whatever quality of water, through mud sediment suspension district, all can improve quality of water, therefore can reduce coagulant and coagulant aid's quantity, save the medicament.
5. The mud residue suspension high-efficiency combined sedimentation tank has the advantages that the distance between the sloping plates is 10-35mm, the disturbance of alum blossom particles and water in sedimentation can be effectively reduced by the aid of the small-distance sloping plates (pipes), the small alum blossom particles are short in sedimentation distance, small particles are further trapped, and the water outlet effect is guaranteed. The small-spacing inclined plate increases hydraulic resistance, so that flow in the inclined plate (pipe) is uniformly distributed, and the sedimentation condition is obviously improved.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
In the figure: 1. a water distribution area; 2. a reflocculating synergistic zone; 3. a sludge suspension zone; 4. a swash plate region; 5. a clear water zone; 6. a vertical partition; 7. and a sloping plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, a sludge suspension efficient combined sedimentation tank comprises a water distribution area 1, a reflocculating auxiliary area 2, a sludge suspension area 3, an inclined plate area 4 and a clear water area 5, wherein the water outlet end of the water distribution area 1 is connected with the water inlet end of the reflocculating auxiliary area 2, the water outlet end of the reflocculating auxiliary area 2 is connected with the water inlet end of the sludge suspension area 3, the water outlet end of the sludge suspension area 3 is connected with the water inlet end of the inclined plate area 4, the water outlet end of the inclined plate area 4 is connected with the water inlet end of the clear water area 5, a plurality of groups of vertical partition plates 6 are arranged in the reflocculating auxiliary area 2 at equal intervals, and a plurality of groups of inclined plates 7 are arranged in the inclined plate area 4 at equal intervals.
The water inlet of the water distribution area 1 is a perforated wall, so that the water distribution of the water flow in the horizontal direction is uniform, and the reflocculating synergistic area 2 can realize the synergistic effect of the uniform water distribution of the water flow in the vertical direction and the reflocculating of the floc particles in the vertical partition plate 6.
The inclined plate 7 is plate-shaped or tubular, and the inclination angle between the inclined plate 7 and the horizontal direction is 45-70 degrees.
The length of each sloping plate 7 is 0.5-1.2 m, the distance between every two adjacent sloping plates 7 is 10-35mm, and the thickness of each sloping plate 7 is 0.85-1.25mm.
The distance between two adjacent sloping plates 7 is 5-10 mm.
The distance between two adjacent vertical baffle plates 6 is 30-100mm, the length of the inclined plate 7 is 200-500mm, when the distance between the baffle plates 6 is reduced, the number of the baffle plates 6 is increased, the on-way resistance is increased, the water flow pulsation generated in the water flow rising process can be restrained, the vortex generation is reduced, the water flow rising process is in a laminar flow state, and the water distribution is more uniform. The shearing strength Fr is controlled to be 0.0001-0.01, and the flow rate of water flow rising from the water distribution area to the reflocculating assistant area is 1.0-3.5mm/s.
The height of the sludge suspension zone 3 is 200-500mm.
The alum particles enter a mud residue suspension area 3 in the process of sliding downwards in an inclined plate 7, collide with falling mud residues, flocculate and grow up, the grown particles are separated from a reflocculating auxiliary area 2 and enter the mud residue suspension area 3 so as to be separated from water, water is purified, and when the turbidity of raw water is lower than 10NTU, a coagulant is required to be added into a traditional inclined plate sedimentation tank to ensure the concentration of flocculated particles. When the turbidity of raw water is higher than 10NTU, compared with the traditional inclined plate sedimentation tank, the utility model can realize stable water outlet by only ensuring sedimentation of colloid particles and destabilization of suspended matters through flocculant and coagulant with less than the optimal dosage due to the existence of the reflocculating zone 2 and the sludge suspension 3.
The turbidity and the SS retention rate reach over 99.5 percent, the SS of the effluent of the sewage treatment sedimentation tank is less than or equal to 5mg/L, and the turbidity of the effluent of the water treatment sedimentation tank is less than or equal to 0.8NTU.
Working principle: raw water passes through the flocculation tank, the water flow evenly flows into the inclined plate sedimentation tank, a perforated wall is arranged at the water inlet, then the water flow sequentially flows into the water distribution area 1, the reflocculating auxiliary area 2, the sludge suspension area 3 and the inclined plate area 4, and finally the water flow stabilizes the water from the clear water area 5.
The rising water flow carries flocs and mud slag falling from the mud slag suspending area 3 to form cross flow, and larger mud slag formed in the mud slag suspending area 3 falls into the reflocculating assistant area 2 to collide with the flocs carried by the rising water flow, and the flocs of small particles reflocculate and grow up, so that the grown particles fall into the sedimentation area after leaving the reflocculating assistant area 2, and are separated from water.
The rising water flows through the sludge suspension area 3 and further contacts and flocculates the falling sludge, the sludge is subjected to mud-water separation in the inclined plate area 4, particles sink on the inclined plate 7 of the inclined plate area 4 under the blocking of the inclined plate area 4 and the action of gravity of the particles, and the water flows through the clear water area 5 after passing through the inclined plate area 4, is collected by the perforated water collecting pipe and is discharged to the water distribution channel. The settled sludge is stored in the perforated sludge discharge pipe of the sludge accumulation zone, and discharge is started when the settled sludge is stored to a certain extent.
When particles accumulate to a certain degree on the inclined plate 7, the particles start to slide down from the inclined plate area 4, the sliding mud and the ascending water flow form cross flow for further contact flocculation to form a mud suspension area, larger colloid particles collide with mud in the mud suspension area 3 and fall into a mud accumulation area, and small particles contact flocculation in the mud suspension area 3 to form larger mud falling, so that the integral sedimentation effect is improved.
Water supply experiment
Raw water passes through a flocculation tank, a flocculating agent adopts polyaluminium chloride (PAC) with the dosage of 10mg/L, a perforated wall is arranged at a water inlet when water flows uniformly into an inclined plate sedimentation tank, and then the water flows into the inclined plate (pipe) sedimentation tank.
The sloping plate 7 has the specification of 1000mm in length, 1000mm in width and 1mm in thickness, and the distance between the sloping plates 7 and 7 is 25mm.
The height of the sludge suspension zone 3 is 300mm.
The vertical partition plate 6 has a length of 300mm, a width of 1000mm and a thickness of 1mm, and the space between the vertical partition plates 6 and 6 is 60mm.
When the turbidity of the inlet water is 105NTU, the rising flow rate is controlled to be 3.0-3.5mm/s, and the turbidity of the outlet water quality is 1.0NTU; the rising flow rate is controlled to be more than 2.0-3.0mm/s, the turbidity of the water quality of the effluent is 0.8-1.0NTU, the rising flow rate is controlled to be less than 2.0mm/s, and the turbidity of the water quality of the effluent is less than 0.8NTU.
When the turbidity of the inlet water is 9.3NTU, the rising flow rate is controlled to be 2.5-3.0mm/s, and the turbidity of the outlet water quality is 1.0NTU; the rising flow rate is controlled to be 2.0-2.5mm/s, the turbidity of the water quality of the effluent is 0.8-1.0NTU, the rising flow rate is controlled to be less than 2.0mm/s, and the turbidity of the water quality of the effluent is less than 0.8NTU.
Experiment of sewage
The sloping plate 7 has the specification of 1000mm in length, 1000mm in width and 1mm in thickness, and the distance between the sloping plates 7 and 7 is 35mm.
The height of the sludge suspension zone 3 is 500mm.
The length of the vertical partition plate 6 is 300mm, the width is 1000mm, the thickness is 1mm, and the interval between the vertical partition plates 6 and the vertical partition plate 6 is 80mm.
The raw water inflow SS is 250-300mg/L, the water flow speed is controlled at 3.0mm/s, and the effluent SS of the sewage treatment sedimentation tank is less than or equal to 2.5mg/L.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high-efficient combination formula sedimentation tank of mud sediment suspension, its characterized in that, including joining in marriage water district (1), the flocculation is assisted district (2) again, mud sediment suspension district (3), swash plate district (4) and clear water district (5), the play water end of joining in marriage water district (1) is connected the income water end of flocculation is assisted district (2) again, the play water end of flocculation is assisted district (2) and is connected the income water end of mud sediment suspension district (3), the play water end of mud sediment suspension district (3) is connected the income water end of swash plate district (4), the play water end of swash plate district (4) is connected the income water end of clear water district (5), the inside equidistance of flocculation is assisted district (2) again is provided with vertical baffle (6) of multiunit, the inside equidistance of swash plate district (4) is provided with swash plate (7) of multiunit slope.
2. The sludge suspension efficient combined sedimentation tank of claim 1, wherein: the water inlet of the water distribution area (1) is a perforated wall.
3. The sludge suspension efficient combined sedimentation tank of claim 1, wherein: the inclined plate (7) is plate-shaped or tubular, and the inclination angle between the inclined plate (7) and the horizontal direction is 45-70 degrees.
4. The sludge suspension efficient combined sedimentation tank of claim 1, wherein: the length of each inclined plate (7) is 0.5-1.2 m, the distance between every two adjacent inclined plates (7) is 10-35mm, and the thickness of each inclined plate (7) is 0.85-1.25mm.
5. The sludge suspension efficient combined sedimentation tank of claim 1, wherein: the distance between two adjacent vertical separation plates (6) is 30-100mm, and the length of the inclined plate (7) is 200-500mm.
6. The sludge suspension efficient combined sedimentation tank of claim 1, wherein: the heights of two adjacent sludge suspension areas (3) are 200-500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320429111.9U CN220047168U (en) | 2023-03-07 | 2023-03-07 | High-efficient combination formula sedimentation tank of mud sediment suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320429111.9U CN220047168U (en) | 2023-03-07 | 2023-03-07 | High-efficient combination formula sedimentation tank of mud sediment suspension |
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| Publication Number | Publication Date |
|---|---|
| CN220047168U true CN220047168U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320429111.9U Active CN220047168U (en) | 2023-03-07 | 2023-03-07 | High-efficient combination formula sedimentation tank of mud sediment suspension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220047168U (en) |
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2023
- 2023-03-07 CN CN202320429111.9U patent/CN220047168U/en active Active
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