CN209815750U - Front hydraulic stirring flocculation tank of horizontal sedimentation tank - Google Patents
Front hydraulic stirring flocculation tank of horizontal sedimentation tank Download PDFInfo
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- CN209815750U CN209815750U CN201920318710.7U CN201920318710U CN209815750U CN 209815750 U CN209815750 U CN 209815750U CN 201920318710 U CN201920318710 U CN 201920318710U CN 209815750 U CN209815750 U CN 209815750U
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Abstract
The utility model discloses a leading water conservancy stirring flocculation basin of advection sedimentation tank belongs to the water purification treatment field. The utility model discloses a flocculation tank, including the flocculation tank cell body, be equipped with a plurality of crossing current partition walls by the upper reaches downstream direction parallel interval in proper order in the flocculation tank cell body, two adjacent crossing current partition walls separate the flocculation tank cell body into the crossing current runner, and be equipped with the water hole of crossing each other in position on two adjacent crossing current partition walls, make adjacent crossing current runner communicate and form horizontal "S" shape reciprocal turn back runner; a plurality of vertical flow folded plates are arranged in each transverse flow channel at intervals in parallel, so that the transverse flow channels form vertical S-shaped reciprocating return flow channels. In the utility model, the water flow forms the return flow in the horizontal direction and the vertical direction, the hydraulic stirring effect is fully exerted, the flocculation effect is improved, and the phenomenon of sludge deposition at the corners of the tank body is avoided by using the stirring effect of the water flow; the existing mechanical stirring flocculation tank is replaced, the energy is saved, the environment is protected, the maintenance is convenient, and the operating cost is low.
Description
Technical Field
The utility model relates to a drinking water purification unit, more specifically say, relate to a leading water conservancy of advection sedimentation tank stirs flocculation basin.
Background
Flocculation is an important link in the process of purifying drinking water, a flocculation tank mainly used in China is mainly a hydraulic flocculation tank, and the flocculation tank adopts a folded plate structure and has the advantages of simple structure, convenience in maintenance, low operating cost and the like. However, the existing hydraulic flocculation tank mainly adopts folded plates to enable water flow to flow in a single direction up and down or left and right, for example, the traditional Chinese patent number is ZL201720405257.4, the publication date is 2017, 12 and 5 days, and the name of the utility model is: the high-efficient vertical flow formula folded plate flocculation basin of low water yield, this application make rivers form the vertical flow motion of direction from top to bottom through the folded plate, but it can't accomplish to adjust the water conservancy flow state of equipment according to actual operating condition, and the effect of water conservancy stirring is not good enough, influences the flocculation efficiency of water. And adopt mechanical stirring, though can adjust the mixer rotational speed according to operating condition, can intervene flocculation water conservancy condition, nevertheless need higher plant maintenance ability to consume higher energy consumption, be difficult to accomplish meticulous regulation to its inside shearing vortex moreover, and the great shearing force of near its paddle production easily makes the great flocculating constituent who has generated cut up, influences follow-up sediment. In the practical application process, a horizontal mechanical stirring device is adopted, and after running for a period of time, the phenomena that sludge is often deposited, a stirrer pulp plate is scraped, a speed reducer set is often subjected to over-torque, a motor is burnt, a chain is broken and the like are often caused, so that the normal production of a water plant is seriously influenced; by adopting the vertical stirring device, although a chain is cancelled and the speed reducer directly drives the paddle to stir, the sludge deposition phenomenon can not be avoided. The source of the above problems is caused by the uniformity of water distribution, the variation in the flow rate of water flowing through a structure, and the like.
Therefore, the existing hydraulic flocculation tank needs to be modified to improve the coagulation and flocculation effects of the hydraulic flocculation tank so as to replace a flocculation tank adopting a mechanical stirring mode.
Disclosure of Invention
1. Technical problem to be solved by the utility model
The utility model aims to overcome the defects of the flocculation tank used in the existing drinking water purification treatment process, and provides a front hydraulic stirring flocculation tank of a horizontal flow sedimentation tank, and the technical proposal of the utility model is adopted, a transverse S-shaped reciprocating return flow channel is formed in the flocculation tank body by utilizing a transverse flow partition wall, and a vertical S-shaped reciprocating return flow channel is formed in the transverse flow channel by utilizing a vertical flow folded plate, so that the water flow forms return flow in the transverse direction and the vertical direction, the hydraulic stirring function is fully exerted, the coagulation and flocculation effects are improved, and the stirring function of the water flow is utilized to avoid the sludge deposition phenomenon at the corners of the tank body; the existing mechanical stirring flocculation tank is replaced, and the production requirement is met, so that the energy-saving and environment-friendly flocculation tank is more energy-saving and environment-friendly, is convenient to maintain, and is low in operating cost.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a front hydraulic stirring flocculation tank of a horizontal flow sedimentation tank, which comprises a flocculation tank body, wherein the upstream of the flocculation tank body is provided with a water inlet area, the downstream is provided with a water distribution pattern wall separated from the sedimentation tank, a plurality of horizontal flow partition walls are arranged in the flocculation tank body from the upstream to the downstream in parallel at intervals in sequence, two adjacent horizontal flow partition walls separate the flocculation tank body into horizontal flow channels, and the two adjacent horizontal flow partition walls are provided with water passing holes with mutually staggered positions, so that the adjacent horizontal flow channels are communicated to form a transverse S-shaped reciprocating back-turning flow channel; each transverse flow channel is internally provided with a plurality of vertical flow folded plates at intervals in parallel, each vertical flow folded plate is divided into an upper side folded plate and a lower side folded plate, and the upper side folded plates and the lower side folded plates are alternately arranged in the corresponding transverse flow channel from top to bottom, so that the transverse flow channels form vertical S-shaped reciprocating return flow channels.
Furthermore, a primary flocculation area, a secondary flocculation area and a tertiary flocculation area are sequentially arranged in the flocculation pool from upstream to downstream, the distance between adjacent vertical flow folded plates in the cross flow channel of the primary flocculation area is smaller than that in the cross flow channel of the secondary flocculation area, and the distance between adjacent vertical flow folded plates in the cross flow channel of the secondary flocculation area is smaller than that in the cross flow channel of the tertiary flocculation area.
Furthermore, the vertical flow folded plates in the primary flocculation area and the secondary flocculation area are of a wavy folded plate structure, and the vertical flow folded plates in the tertiary flocculation area are of a plane folded plate structure.
Furthermore, the distance between two adjacent cross flow partition walls in the flocculation tank body is equal.
Furthermore, the vertical flow folded plate is made of glass fiber reinforced plastic materials.
Furthermore, the device also comprises a mud discharging device, wherein the mud discharging device is provided with a mud discharging pipe arranged at the bottom of each cross flow channel, and a plurality of mud discharging holes with the aperture of 20mm are obliquely and downwards arranged on the pipe wall of the mud discharging pipe in a 45-degree staggered manner.
Furthermore, a water falling weir is further arranged at the water inlet area, and a stainless steel weir plate is further arranged at the top of the water falling weir.
Furthermore, a lower stack clean water tank is also arranged at the bottom of the flocculation tank body.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:
(1) the utility model relates to a front hydraulic stirring flocculation tank of a horizontal flow sedimentation tank, which is characterized in that a water inlet area is arranged at the upstream of a flocculation tank body, a water distribution pattern wall separated from the sedimentation tank is arranged at the downstream, a plurality of horizontal flow partition walls are arranged in the flocculation tank body from the upstream to the downstream in parallel at intervals, two adjacent horizontal flow partition walls divide the flocculation tank body into horizontal flow channels, a plurality of vertical flow folded plates are arranged in each horizontal flow channel at intervals in parallel, the cross-flow partition wall is utilized to form a transverse S-shaped reciprocating back-turning flow channel in the flocculation tank body, and the vertical flow folded plate is utilized to form a vertical S-shaped reciprocating back-turning flow channel in the cross-flow channel, so that water flow forms back-turning flow in the transverse direction and the vertical direction, the hydraulic stirring effect is fully exerted, the coagulation and flocculation effects are improved, and the phenomenon of sludge deposition at the corners of the tank body is avoided by utilizing the stirring effect of the water flow; the existing mechanical stirring flocculation tank is replaced, and under the condition of meeting the production requirement, the energy-saving and environment-friendly flocculation tank is more energy-saving and convenient to maintain, and the running cost is low;
(2) the utility model discloses a front hydraulic stirring flocculation basin of advection sedimentation tank, have first grade flocculation district, second grade flocculation district and tertiary flocculation district from the upper reaches to downstream in proper order in its flocculation basin cell body, adjacent vertical flow folded plate interval is less than the interval of adjacent vertical flow folded plate in the second grade flocculation district cross flow runner in the first grade flocculation district cross flow runner, adjacent vertical flow folded plate interval is less than the interval of adjacent vertical flow folded plate in the tertiary flocculation district cross flow runner in the second grade flocculation district cross flow runner, make the rivers mix and roll by the rapid to the slow, reach the effect that the flocculating constituent is not destroyed to the anterior segment rapid mixing flocculation, back end;
(3) the utility model discloses a front hydraulic stirring flocculation basin of a horizontal sedimentation tank, wherein the vertical flow folded plates in a primary flocculation area and a secondary flocculation area of the horizontal sedimentation tank all adopt a wavy folded plate structure, and the vertical flow folded plates in a tertiary flocculation area adopt a plane folded plate structure, thereby enhancing the mixing effect of the front section and reducing the damage of the rear section to a flocculating constituent;
(4) the utility model discloses a front hydraulic stirring flocculation tank of a horizontal sedimentation tank, which also comprises a sludge discharge device, wherein the sludge discharge device is provided with a sludge discharge pipe arranged at the bottom of each horizontal flow channel, a plurality of sludge discharge holes with the aperture of 20mm are arranged on the pipe wall of the sludge discharge pipe in a downward inclined 45-degree staggered manner, and sludge deposition at the bottom of the tank is prevented through periodic back flushing and discharging;
(5) the utility model discloses a leading water conservancy stirring flocculation basin of advection sedimentation tank, its flocculation basin cell body bottom has still built the lower clear water basin that folds, has improved the space utilization in production factory district.
Drawings
FIG. 1 is a schematic plane structure diagram of a front hydraulic stirring flocculation tank of a horizontal sedimentation tank of the utility model;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the flow direction of a hydraulic stirring flocculation tank arranged in front of a horizontal flow sedimentation tank;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 1;
fig. 7 is a cross-sectional view taken along the line E-E in fig. 1.
The reference numerals in the schematic drawings illustrate:
100. a flocculation tank; 100a, a primary flocculation area; 100b, a secondary flocculation area; 100c, a third-stage flocculation area; 101. a cross flow partition wall; 102. a water inlet area; 103. a water falling weir; 104. a water inlet of the primary flocculation area; 105. a vertical flow folded plate; 105a, upper side flaps; 105b, lower side flaps; 106. water passing holes of the primary flocculation area; 107. a water inlet of the secondary flocculation area; 108. water passing holes of the secondary flocculation area; 109. a water inlet of the third-stage flocculation area; 110. water passing holes of the third-stage flocculation area; 200. a sludge discharge device; 201. a sludge discharge pipe; 300. a water distribution tracery wall; 400. a sedimentation tank; 401. a water collection tank; 402. a water outlet pipe of the sedimentation tank; 500. a clean water tank is stacked downwards; 501. A clean water tank water inlet pipe; 502. and a water outlet pipe of the clean water tank.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Examples
Referring to fig. 1, 2 and 3, in the embodiment of the hydraulic stirring flocculation tank with a front horizontal sedimentation tank, the flocculation tank 100 is constructed in a previous process of the sedimentation tank 400, the flocculation tank 100 and the sedimentation tank 400 are separated by the water distribution wall 300, a water collection tank 401 is arranged at the downstream of the sedimentation tank 400, a sedimentation tank water outlet pipe 402 is arranged at the bottom of the downstream of the sedimentation tank 400, water flows are mixed and flocculated by the flocculation tank 100, the flow rate of the water flow entering the horizontal sedimentation tank 400 is reduced by the water distribution wall 300, disturbance to the sedimentation tank 400 is reduced, and then a flocculating constituent in a water body gradually settles to the bottom of the sedimentation tank 400 at the upstream of the sedimentation tank 400, overflows into the water collection tank 401 at the downstream of the sedimentation tank 400, and flows out through the sedimentation tank water outlet pipe 402. The flocculation tank 100 comprises a flocculation tank body, wherein a water inlet area 102 is arranged at the upstream of the flocculation tank bodyThe downstream is provided with a water distribution tracery wall 300 separated from the sedimentation tank 400, a plurality of transverse flow partition walls 101 are sequentially arranged in parallel at intervals from the upstream to the downstream in the flocculation tank body, the transverse flow partition walls 101 can be built by concrete, the flocculation tank body is divided into transverse flow channels by two adjacent transverse flow partition walls 101, and water passing holes with mutually staggered positions are arranged on the two adjacent transverse flow partition walls 101, so that the adjacent transverse flow channels are communicated to form a transverse S-shaped reciprocating back-turning channel; a plurality of vertical flow folded plates 105 are arranged in each cross flow channel at intervals in parallel, each vertical flow folded plate 105 is divided into an upper side folded plate 105a and a lower side folded plate 105b, and the upper side folded plates 105a and the lower side folded plates 105b are alternately arranged up and down in the corresponding cross flow channels, so that the cross flow channels form vertical S-shaped reciprocating return flow channels. As shown in fig. 3, the water flows into the flocculation basin body from the water inlet area 102, and the up-and-down rolling motion is formed in the cross flow channel, wherein "☉" in fig. 3 represents that the water flows upwards,the water flow is downward, the alternating motion is to form vertical S-shaped reciprocating and returning flow, and the horizontal S-shaped reciprocating and returning flow state is shown by an arrow in figure 3. Through the design of the transverse flow partition wall 101 and the vertical flow folded plate 105, the water flow forms return flow in the transverse direction and the vertical direction, the hydraulic stirring effect is fully exerted, the coagulation and flocculation effects are improved, and meanwhile, the sludge deposition phenomenon at the corners of the tank body is avoided by using the stirring effect of the water flow; the existing mechanical stirring flocculation tank is replaced, and the production requirement is met, so that the energy-saving and environment-friendly flocculation tank is more energy-saving and environment-friendly, is convenient to maintain, and is low in operating cost.
As shown in fig. 3, in the present embodiment, a primary flocculation area 100a, a secondary flocculation area 100b and a tertiary flocculation area 100c are sequentially arranged in the flocculation tank from upstream to downstream, and the structures of the primary flocculation area 100a, the secondary flocculation area 100b and the tertiary flocculation area 100c are substantially the same, except that the distance between adjacent vertical flow folded plates 105 in the cross flow channel of the primary flocculation area 100a is smaller than the distance between adjacent vertical flow folded plates 105 in the cross flow channel of the secondary flocculation area 100b, and the distance between adjacent vertical flow folded plates 105 in the cross flow channel of the secondary flocculation area 100b is smaller than the distance between adjacent vertical flow folded plates 105 in the cross flow channel of the tertiary flocculation area 100c, so that the water flow mixing and tumbling is from rapid to moderate, and the effects of rapid mixing flocculation at the front section and no damage to the floccule at the rear section are; further, as shown in fig. 4, 5 and 6, the vertical flow folded plates 105 in the primary flocculation area 100a and the secondary flocculation area 100b both adopt a wavy folded plate structure, and the vertical flow folded plates 105 in the tertiary flocculation area 100c adopt a plane folded plate structure, so that the mixing effect of the front section is enhanced, and the damage of the rear section to the floccule is reduced. Fig. 4 is a layout structure diagram of the vertical flow folding plate 105 of the primary flocculation area 100a, wherein the arrow direction represents the direction of the water flow rolling up and down, the water flow enters from the water inlet hole 104 of the primary flocculation area, forms up-and-down flow through the blockage of the upper folding plate 105a and the lower folding plate 105b, and flows into the secondary flocculation area 100b from the water through hole 106 of the primary flocculation area; fig. 5 is a layout structure diagram of the vertical flow folded plate 105 of the secondary flocculation area 100b, wherein the arrow direction represents the direction of the water flow rolling up and down, the water flow enters from the water inlet hole 107 of the secondary flocculation area, forms up-and-down flow through the blockage of the upper folded plate 105a and the lower folded plate 105b, and flows into the tertiary flocculation area 100c from the water through hole 108 of the secondary flocculation area; fig. 6 is a layout structure diagram of the vertical flow folded plate 105 of the tertiary flocculation area 100c, wherein the arrow direction represents the direction of the water flow rolling up and down, the water flow enters from the water inlet hole 109 of the tertiary flocculation area, forms up-and-down flow through the blockage of the upper folded plate 105a and the lower folded plate 105b, and the flow is uniformly dispersed before flowing into the distributing wall 300 from the water through hole 110 of the tertiary flocculation area; the structure of the match wall 300 is shown in fig. 7. In addition, the distance between two adjacent transverse flow partition walls 101 in the flocculation tank body is equal, and the vertical flow folded plate 105 is made of glass fiber reinforced plastic materials.
Returning to fig. 1 and 2, the front hydraulic stirring flocculation tank of the horizontal sedimentation tank of the present embodiment further includes a sludge discharge device 200, the sludge discharge device 200 has a sludge discharge pipe 201 disposed at the bottom of each cross flow channel, and a plurality of sludge discharge holes with a diameter of 20mm are arranged on the pipe wall of the sludge discharge pipe 201 in a staggered manner, wherein the angle of the inclined angle is 45 degrees. The sludge discharge pipe 201 is connected with a back flush water pipe and is connected with devices such as an air pump and the like through an air path distributor, and sludge deposition at the bottom of the tank is prevented through periodic back flushing and discharging. In addition, in order to make the flocculation tank 100 intake water stably, a water falling weir 103 is further arranged at the water intake area 102, and a stainless steel weir plate is further arranged at the top of the water falling weir 103, so that the impact of high falling water is effectively reduced. In addition, a lower-stacked clean water tank 500 is further built at the bottom of the flocculation tank, the flocculation tank 100 and the sedimentation tank 400 can be built above the lower-stacked clean water tank 500, the lower-stacked clean water tank 500 is arranged at the part below the ground, and a clean water tank water inlet pipe 501 and a clean water tank water outlet pipe 502 are also buried below the ground, so that the space utilization rate of a production plant area is improved.
The utility model discloses a leading water conservancy stirring flocculation basin of advection sedimentation tank utilizes the crossing current partition wall to form horizontal "S" shape and reciprocates the runner of turning back in the flocculation basin cell body to utilize the vertical flow folded plate to form vertical "S" shape and reciprocate the runner of turning back in the crossing current runner, make rivers transversely and two vertical orientation formation flow of turning back, full play hydraulic stirring effect, improved and thoughtlessly congealed, the flocculation effect, the stirring effect who utilizes the rivers simultaneously has avoided cell body corner to take place the phenomenon of siltation mud.
The utility model discloses a leading water conservancy of advection sedimentation tank stirs flocculation basin still has following advantage:
1. the structure is simple: mechanical stirring equipment and an auxiliary support are omitted, so that the change condition of the water body on the surface of the coagulation tank can be observed conveniently, and the coagulation and flocculation effects can be judged;
2. energy conservation: electric equipment such as a motor and a frequency converter which are matched with stirring equipment is omitted, so that the production is met, and the electricity is saved;
3. the practicality is high: the main structure is not damaged, the influence on production is small, and the workload of maintenance of process equipment is reduced.
The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a leading water conservancy of advection sedimentation tank stirs flocculation basin, includes the flocculation basin cell body, the upper reaches of flocculation basin cell body be equipped with into water district (102), the low reaches are equipped with the water distribution flower wall (300) that separate mutually with sedimentation tank (400), its characterized in that: a plurality of cross flow partition walls (101) are sequentially arranged in the flocculation tank body from the upstream to the downstream in parallel at intervals, the flocculation tank body is partitioned into cross flow channels by two adjacent cross flow partition walls (101), and water passing holes with mutually staggered positions are arranged on the two adjacent cross flow partition walls (101), so that the adjacent cross flow channels are communicated to form a transverse S-shaped reciprocating back-turning channel; each transverse flow channel is internally provided with a plurality of vertical flow folded plates (105) at intervals in parallel, each vertical flow folded plate (105) is divided into an upper side folded plate (105a) and a lower side folded plate (105b), and the upper side folded plate (105a) and the lower side folded plate (105b) are alternately arranged up and down in the corresponding transverse flow channel, so that the transverse flow channel forms a vertical S-shaped reciprocating turning-back flow channel.
2. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: the flocculation tank is characterized in that a primary flocculation area (100a), a secondary flocculation area (100b) and a tertiary flocculation area (100c) are sequentially arranged from upstream to downstream in the flocculation tank body, the distance between adjacent vertical flow folded plates (105) in a cross flow channel of the primary flocculation area (100a) is smaller than that between adjacent vertical flow folded plates (105) in a cross flow channel of the secondary flocculation area (100b), and the distance between adjacent vertical flow folded plates (105) in the cross flow channel of the secondary flocculation area (100b) is smaller than that between adjacent vertical flow folded plates (105) in the cross flow channel of the tertiary flocculation area (100 c).
3. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: the vertical flow folded plate (105) in the primary flocculation area (100a) and the secondary flocculation area (100b) are both in a wavy folded plate structure, and the vertical flow folded plate (105) in the tertiary flocculation area (100c) is in a plane folded plate structure.
4. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: the distance between two adjacent cross flow partition walls (101) in the flocculation tank body is equal.
5. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: the vertical flow folded plate (105) is made of glass fiber reinforced plastic materials.
6. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: still include row mud device (200), row mud device (200) have arrange mud pipe (201) of locating every crossing flow runner bottom, the pipe wall of mud pipe (201) go up 45 crisscross mud discharging hole that is equipped with a plurality of apertures for 20mm under the slant.
7. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: the water inlet area (102) is also provided with a water falling weir (103), and the top of the water falling weir (103) is also provided with a stainless steel weir plate.
8. The front hydraulic stirring flocculation tank of the horizontal flow sedimentation tank is characterized in that: the bottom of the flocculation tank body is also provided with a lower-stacked clean water tank (500).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920318710.7U CN209815750U (en) | 2019-03-12 | 2019-03-12 | Front hydraulic stirring flocculation tank of horizontal sedimentation tank |
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| CN201920318710.7U CN209815750U (en) | 2019-03-12 | 2019-03-12 | Front hydraulic stirring flocculation tank of horizontal sedimentation tank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420432A (en) * | 2020-01-19 | 2020-07-17 | 中国市政工程中南设计研究总院有限公司 | High-density horizontal flow sedimentation tank |
| CN113307340A (en) * | 2021-05-19 | 2021-08-27 | 中国水利水电第五工程局有限公司 | Tunnel sewage flocculation treatment system |
| CN113772794A (en) * | 2021-08-30 | 2021-12-10 | 山东水利建设集团有限公司 | Folded plate flocculation tank and horizontal flow sedimentation tank combined construction structure and construction process thereof |
-
2019
- 2019-03-12 CN CN201920318710.7U patent/CN209815750U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420432A (en) * | 2020-01-19 | 2020-07-17 | 中国市政工程中南设计研究总院有限公司 | High-density horizontal flow sedimentation tank |
| CN113307340A (en) * | 2021-05-19 | 2021-08-27 | 中国水利水电第五工程局有限公司 | Tunnel sewage flocculation treatment system |
| CN113307340B (en) * | 2021-05-19 | 2023-03-14 | 中国水利水电第五工程局有限公司 | Tunnel sewage flocculation treatment system |
| CN113772794A (en) * | 2021-08-30 | 2021-12-10 | 山东水利建设集团有限公司 | Folded plate flocculation tank and horizontal flow sedimentation tank combined construction structure and construction process thereof |
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