Clarification tank
By setting up flocculation units and sedimentation units in the clarification pool of old water plants, using bent paths and inclined water flow channel technology, the problem that old water plants cannot meet water quality requirements under the new standards is solved, and treatment efficiency and quality are improved. Reduces energy consumption and maintenance costs.
Patent Information
- Application Number
- CN202420406941.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-04
AI Technical Summary
The clarification pool of old water plants cannot meet the effluent water quality requirements under the new national standards, and the aging of internal structures leads to increased operating costs and maintenance difficulties, so these problems cannot be solved through expansion and renovation.
On the basis of not destroying the structure of the pool, the internal structure of the clarification pool is modified, flocculation units and precipitation units are set up, and the flocculation units flow through the bent path through the plate flocculation and inclined water flow channels are precipitated, thereby improving the efficiency of particle collision and mud-water separation, and optimizing the process to improve the process to improve the Processing efficiency and quality.
The raw water treatment efficiency and quality have been improved, energy consumption and maintenance costs have been reduced, the treatment scale has been increased by 60%-100%, and the turbidity of the precipitated effluent has been reduced from 3NTU to below 1NTU, meeting the new standards.
Smart Images
Figure CN222150983U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water purification, in particular to a clarifier. Background Art
[0002] In the 1980s, water plants promoted the use of hydraulic circulation clarifier sedimentation technology on a large scale. The turbidity of water quality specified in the Sanitary Standard for Drinking Water (GB 5749-1985) was 3NTU. In recent years, with the continuous increase in urban water consumption, the requirements for water quality have become higher and higher. The latest Sanitary Standard for Drinking Water (GB 5749-2022) requires a turbidity of 1NTU.
[0003] A large number of old water plants across the country are facing the following problems: (1) Under the new national standards, they are unable to meet the effluent water quality requirements and can only ensure that the effluent meets the standards by reducing the load. They are unable to meet normal water supply requirements. After expansion and renovation, the output of some water plants still cannot meet the water supply requirements, and there is no more land for expansion; (2) The clarification tanks of old water plants usually have problems such as aging of the internal structure, which not only affects the treatment effect, but also increases the operating cost and maintenance difficulty.
[0004] Therefore, this patent aims to improve the raw water treatment efficiency and quality, and reduce energy consumption and maintenance costs by transforming the internal structure of the clarifier, updating equipment, and optimizing processes, under the premise that external expansion construction is not possible. Utility Model Content
[0005] 1. Technical issues to be resolved
[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a clarifier, which solves the technical problem of how to improve the raw water treatment efficiency and treatment quality and reduce energy consumption and maintenance costs when transforming the internal structure of an old clarifier.
[0007] (II) Technical solution
[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0009] The utility model provides a clarification tank, comprising a tank body, and also comprising a flocculation unit and a sedimentation unit both located inside the tank body;
[0010] The water outlet end of the flocculation unit is connected to the sedimentation unit;
[0011] The flocculation unit comprises a plurality of plates arranged at intervals in the horizontal direction, and the upper ends and lower ends of the plurality of plates are alternately opened; water entering the flocculation unit flows through the plurality of plates along a curved path and then enters the sedimentation unit after flocculation;
[0012] The sedimentation unit is provided with a plurality of water flow channels and a plurality of sludge channels; the water flow channel extends horizontally, and the top wall and the bottom wall of the water flow channel are parallel and inclined; the sludge channel extends vertically and is connected to the corresponding inclined lower end of the water flow channel; the flocculated water enters the water flow channel, the sludge precipitated in the water slides along the bottom wall of the water flow channel and enters the corresponding sludge channel and falls, and the clear water after precipitation is discharged from the water flow channel.
[0013] According to the utility model, the number of the flocculation unit and the number of the sedimentation unit are both two;
[0014] The two flocculation units and the two sedimentation units are arranged opposite to each other, and the two flocculation units are located on both sides of the two sedimentation units. The water outlet end of each flocculation unit is connected to the corresponding sedimentation unit.
[0015] According to the utility model, a clean water collection tank is provided between the two sedimentation units, the clean water collection tank is connected to the water flow channel, and a water outlet is provided at the upper part of the clean water collection tank;
[0016] The clean water discharged from the water flow channel is collected in the clean water collecting tank and discharged from the water outlet.
[0017] According to the utility model, the flocculation unit includes a central flocculation module and at least n lateral flocculation modules; n is an even number greater than or equal to 2;
[0018] At least n lateral flocculation modules are arranged along or sequentially along the first radial direction of the tank body on both sides of the central flocculation module;
[0019] The water inlet end of the central flocculation module is connected to the water inlet channel, the water outlet end of the central flocculation module is connected to or sequentially connected to at least n lateral flocculation modules, and the water outlet end of the outermost lateral flocculation module is connected to the corresponding sedimentation unit.
[0020] According to the utility model, at least n lateral flocculation modules include two first lateral flocculation modules and two second lateral flocculation modules, and the two first lateral flocculation modules and the two second lateral flocculation modules are sequentially arranged on both sides of the central flocculation module along the first radial direction;
[0021] The length directions of the central flocculation module and the lateral flocculation module are both extended along the second radial direction of the tank body; the second radial direction is perpendicular to the first radial direction;
[0022] The central flocculation module and the lateral flocculation module each include a plurality of plates arranged in sequence along the first radial direction; the adjacent central flocculation module, the first lateral flocculation module and the second lateral flocculation module are separated by a partition; the upper ends and lower ends of the plurality of plates are alternately opened along the first radial direction of the tank body;
[0023] The end of the central flocculation module and the lateral flocculation module away from the sedimentation unit is the first end, the first end of the central flocculation module is connected to the water inlet channel, the second end of the central flocculation module is connected to the second end of the first lateral flocculation module, the first end of the first lateral flocculation module is connected to the first end of the second lateral flocculation module, and the second end of the second lateral flocculation module is connected to the corresponding sedimentation unit; the water entering the central flocculation module, the first lateral flocculation module and the second lateral flocculation module flows through the corresponding multiple plates in sequence along the curved path.
[0024] According to the utility model, the sedimentation unit comprises a plurality of sedimentation modules spaced apart along the first radial direction;
[0025] Each sedimentation module includes a plurality of sedimentation components arranged along the second radial direction;
[0026] Each sedimentation assembly includes a vertical plate, a plurality of mud guide plates and a plurality of inclined plate bodies;
[0027] The width direction of the vertical plate is extended along the first radial direction;
[0028] A plurality of mud guide plates are arranged on the vertical plate at intervals along the width direction of the vertical plate;
[0029] A plurality of inclined plates are arranged at intervals along the vertical direction, the width direction of the inclined plates extends along the first radial direction, and the inclined upper ends and the inclined lower ends of the inclined plates are respectively connected to the mud guide plate of the same sedimentation assembly and the vertical plate of the adjacent sedimentation assembly;
[0030] The water flow channel extending horizontally along the first radial direction is formed between two adjacent inclined plates, and the two adjacent inclined plates are respectively the top wall and the bottom wall of the water flow channel; the sludge channel is formed between two adjacent mud guide plates;
[0031] The water outlet of each flocculation unit introduces flocculated water into the water flow channel of the corresponding sedimentation unit, and the sludge settled in the water in the water flow channel slides along the inclined plate body to enter the sludge channel and fall.
[0032] According to the utility model, the inner cavity of the tank body is a trapezoidal shape that is wide at the top and narrow at the bottom; the flocculation unit and the sedimentation unit are both located at the upper part of the tank body;
[0033] The clarifier tank also includes a mud discharge area located at the lower part of the tank body;
[0034] The sludge discharge channels of the flocculation unit and the sedimentation unit are both connected and discharge the sludge in the water into the sludge discharge area.
[0035] According to the utility model, it also includes water distribution plates respectively located between the flocculation unit and the sedimentation unit;
[0036] The water distribution plate is located at the upper part of the pool body, the water distribution plate is vertically arranged, and the width direction of the water distribution plate extends along the first radial direction of the pool body;
[0037] The water distribution plate is provided with a plurality of water holes, and the water discharged from the water outlet of the flocculation unit is buffered and discharged into the sedimentation unit through the water holes of the water distribution plate.
[0038] According to the utility model, at least one first mud discharge pipe is arranged below the flocculation unit, and a plurality of mud discharge holes communicating with the bottom end of the flocculation unit are arranged on the mud discharge pipe;
[0039] The bottom end of the water distribution plate is connected to a second mud discharge pipe;
[0040] The bottom of the precipitation module is hollowed out;
[0041] The first mud discharge pipe, the second mud discharge pipe and the bottom of the sedimentation module are all connected to the mud discharge area, and the inner cavity of the first mud discharge pipe, the inner cavity of the second mud discharge pipe and the bottom of the sedimentation module form the mud discharge channel.
[0042] According to the utility model, the flocculation unit is fixed on the upper slope inside the tank body;
[0043] The sedimentation unit is supported at the upper part of the tank body by a supporting retaining wall;
[0044] It also includes a water inlet pipe, the interior of which forms the water inlet channel for discharging raw water into the flocculation unit; the water inlet pipe includes a first branch pipe and two second branch pipes connected to the first branch pipe; the first branch pipe is penetrated through the mud discharge area, and the two second branch pipes extend to the corresponding water inlet ends of the flocculation units respectively.
[0045] (III) Beneficial effects
[0046] The beneficial effects of the utility model are as follows: the utility model provides a clarifier, which is modified after removing the components inside the original clarifier: the space inside the original tank body is fully utilized, and a flocculation unit and a sedimentation unit are arranged inside the tank body through reasonable layout, without destroying the tank body structure, thereby reducing the modification cost and energy consumption.
[0047] The water entering the flocculation unit flows along a curved path through multiple plates for flocculation before entering the corresponding sedimentation unit. When the water flows along the curved path between the plates, it can form numerous small vortices, which improves the particle collision flocculation effect, improves the flocculation effect and shortens the flocculation time. The plates can be set up separately, which is convenient for installation and maintenance. At the same time, the shape, size and spacing of the folded plates can be adjusted to adapt to changes in raw water quality and water volume within a large range.
[0048] In the sedimentation unit, the sludge formed by the water precipitation in the water flow channel can slide down along the inclined bottom wall of the water flow channel to the inclined lower end and enter the vertically extending sludge channel without obstacles to slide down, so as to avoid the sludge on the bottom wall of the water flow channel from sliding down to the inclined lower end and being impacted and dispersed and entering the clear water after precipitation again, which can improve the sedimentation efficiency of mud-water separation. At the same time, the upper wall and the bottom wall of the water flow channel can completely contact the water, and the effective contact area is 100%, which further improves the sedimentation efficiency.
[0049] Therefore, this clarifier can improve the treatment effect of raw water and ensure the normal supply of water while retaining the structure of the original clarifier. After the transformation, the treatment scale of the water plant can be increased by 60%-100%, and the turbidity of the precipitated water can be reduced from 3NTU to below 1NTU. BRIEF DESCRIPTION OF THE DRAWINGS
[0050] Figure 1 This is a front view of the clarification tank of the utility model;
[0051] Figure 2 for Figure 1 Sectional view at EE;
[0052] Figure 3 for Figure 2 Cross-sectional view at FF;
[0053] Figure 4 for Figure 2 A cross-sectional view perpendicular to FF;
[0054] Figure 5 for Figure 4 Sectional view at GG in the middle;
[0055] Figure 6 for Figure 4 A partial schematic diagram of
[0056] Figure 7 for Figure 6 Schematic diagram of water flow path in ;
[0057] Figure 8 for Figure 2A front view of a central flocculation module, a first lateral flocculation module and a second lateral flocculation module;
[0058] Fig. 9 for Figure 8 Schematic diagram of water flow in;
[0059] Fig.10 is a three-dimensional schematic diagram of a precipitation module;
[0060] Fig.11 for Fig.10 A partial schematic diagram of
[0061] Fig.12 for Fig.10 The main view of
[0062] Fig.13 for Fig.12 A partial schematic diagram of
[0063] Fig.14 for Fig.10 A bottom-up perspective diagram of
[0064] Fig.15 for Fig.14 A partial schematic diagram of .
[0065] [Description of Reference Numerals]
[0066] 1: cell body; A: first radial direction; B: second radial direction;
[0067] 2: flocculation unit; 21: central flocculation module; 211: relative folding plate; 22: first lateral flocculation module; 221: parallel folding plate; 23: second lateral flocculation module; 231: parallel straight plate; 24: partition plate; 25: first mud discharge pipe; 251: mud discharge hole;
[0068] 3: sedimentation unit; 31: sedimentation module; 3111: vertical plate; 3112: mud guide plate; 3113: inclined plate; C: water flow channel; D: sludge channel;
[0069] 4: water inlet pipe; 41: first branch pipe; 42: second branch pipe;
[0070] 5: clean water collection tank; 51: water outlet;
[0071] 6: water distribution board; 61: second row of mud pipes;
[0072] 7: Mud discharge area; 71: The third mud discharge pipe;
[0073] 8: Support retaining wall;
[0074] 9: Cloth sink. DETAILED DESCRIPTION
[0075] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 2 The orientation is used as a reference.
[0076] See also Figure 1-15 The clarifier provided in the embodiment of the utility model comprises a tank body 1, which is the original old clarifier body. The clarifier of the utility model is formed by dismantling the internal structure of the old clarifier body and then expanding and upgrading the internal structure.
[0077] The clarifier tank further includes a flocculation unit 2 and a sedimentation unit 3 both located inside the tank body 1. The water outlet end of the flocculation unit 2 is connected to the sedimentation unit 3.
[0078] The flocculation unit 2 includes a plurality of plates arranged at intervals in the horizontal direction, and the upper and lower ends of the plurality of plates are alternately opened. Water entering the flocculation unit 2 flows through the plurality of plates along a zigzag path and enters the sedimentation unit 3 after flocculation.
[0079] The sedimentation unit 3 is provided with a plurality of water channels C and a plurality of sludge channels D. The water channel C extends horizontally, and the top wall and the bottom wall of the water channel C are parallel and inclined. The sludge channel D extends vertically and is connected to the inclined lower end of the corresponding water channel C. The flocculated water enters the water channel C, and the sludge precipitated in the water slides down the bottom wall of the water channel C and enters the corresponding sludge channel D and falls, and the clear water after precipitation is discharged from the water channel C.
[0080] This clarifier is renovated on the basis of the original old clarifier body after removing the internal components of the tank body 1: the space inside the original tank body 1 is fully utilized, and through reasonable layout, flocculation units 2 and sedimentation units 3 are set inside the tank body 1 without destroying the tank body structure, thereby reducing the renovation cost and energy consumption.
[0081] The water entering the flocculation unit 2 flows along a curved path through multiple plates for flocculation before entering the corresponding sedimentation unit 3. When the water flows along the curved path between the plates, it can form numerous small vortices, which improves the particle collision flocculation effect, thereby improving the flocculation effect and shortening the flocculation time. The plates can be set up separately, which is convenient for installation and maintenance. At the same time, the shape, size and spacing of the folded plates can be adjusted to adapt to changes in raw water quality and water volume within a large range.
[0082] In the sedimentation unit 3, the sludge formed by the water precipitation in the water flow channel C can slide down along the inclined bottom wall of the water flow channel C to the inclined lower end and enter the vertically extending sludge channel D without any obstacles to slide down, so as to avoid the sludge on the bottom wall of the water flow channel C from sliding down to the inclined lower end and being impacted and dispersed and entering the clear water after precipitation again, which can improve the sedimentation efficiency of mud-water separation. At the same time, the upper wall and the bottom wall of the water flow channel C can completely contact the water, and the effective contact area is 100%, which further improves the sedimentation efficiency.
[0083] Therefore, the clarifier can improve the treatment effect of raw water and ensure the normal supply of water while retaining the structure of the original clarifier body 1. After the transformation of the water plant, the treatment scale can be increased by 60%-100%, and the turbidity of the precipitated water can be reduced from 3NTU to below 1NTU. Among them, the raw water is untreated water.
[0084] Preferably, the number of flocculation units 2 and sedimentation units 3 is two each.
[0085] The two flocculation units 2 and the two sedimentation units 3 are arranged opposite to each other, and the two flocculation units 2 are located on both sides of the two sedimentation units 3 . The water outlet of each flocculation unit 2 is connected to the corresponding sedimentation unit 3 .
[0086] Therefore, through reasonable layout, the space inside the original tank body 1 is fully utilized, and the number of flocculation units 2 and sedimentation units 3 is increased to expand the treatment efficiency and treatment volume of raw water.
[0087] Furthermore, the flocculation unit 2 comprises a central flocculation module 21 and at least n lateral flocculation modules, where n is an even number greater than or equal to 2.
[0088] At least n lateral flocculation modules are relatively arranged on both sides of the central flocculation module 21 along or sequentially along the first radial direction A of the tank body 1. The outlet of the central flocculation module 21 is connected or sequentially connected to at least n lateral flocculation modules, and the outlet of the outermost lateral flocculation module is connected to the corresponding sedimentation unit 3.
[0089] Through the above arrangement, the number of flocculation modules in the flocculation unit 2 can be increased within the limited space of the tank body 1, and the water flowing through the central flocculation module 21 is discharged from the water outlet end of the central flocculation module 21 to the lateral flocculation modules on both sides or in sequence, so as to extend the water flow path and make the water entering the flocculation unit 2 fully flocculated, thereby improving the quality of raw water treatment.
[0090] Preferably, the at least n lateral flocculation modules include two first lateral flocculation modules 22 and two second lateral flocculation modules 23 , and the two first lateral flocculation modules 22 and the two second lateral flocculation modules 23 are sequentially arranged along the first radial direction A on both sides of the central flocculation module 21 .
[0091] The length direction of the central flocculation module 21 and the lateral flocculation module are both extended along the second radial direction B of the tank body 1. The second radial direction B is perpendicular to the first radial direction A. The central flocculation module 21 and the lateral flocculation module each include a plurality of plates arranged in sequence along the first radial direction A. The adjacent central flocculation module 21, the first lateral flocculation module 22 and the second lateral flocculation module 23 are separated by a partition 24. The upper ends and lower ends of the plurality of plates are alternately opened along the first radial direction A of the tank body 1.
[0092] The end of the central flocculation module 21 and the lateral flocculation module away from the sedimentation unit 3 is the first end, the first end of the central flocculation module 21 is connected to the water inlet channel, the second end of the central flocculation module 21 is connected to the second end of the first lateral flocculation module 22, the first end of the first lateral flocculation module 22 is connected to the first end of the second lateral flocculation module 23, and the second end of the second lateral flocculation module 23 is connected to the corresponding sedimentation unit 3.
[0093] The raw water is sequentially flocculated along the tortuous path through the water inlet channel, the first end of the central flocculation module 21, the second end of the central flocculation module 21, the second end of the first lateral flocculation module 22, the first end of the first lateral flocculation module 22, the first end of the second lateral flocculation module 23, and the second end of the second lateral flocculation module 23, and then discharged into the sedimentation unit 3 from the second end of the second lateral flocculation module 23. The flocculation unit 2 provided above enables the water to be flocculated along the tortuous path, prolonging the flocculation reaction time and improving the quality of raw water treatment. At the same time, the water entering the central flocculation module 21, the first lateral flocculation module 22, and the second lateral flocculation module 23 all sequentially flow through the corresponding multiple plates along the tortuous path to prolong the flocculation reaction time and improve the quality of raw water treatment.
[0094] Specifically, the central flocculation module 21 includes a plurality of opposing folds 211, the first lateral flocculation module 22 includes a plurality of parallel folds 221, and the second lateral flocculation module 23 includes a plurality of parallel straight plates 231. The opposing folds 211 refer to two adjacent folds arranged oppositely, and the parallel folds 221 refer to two adjacent folds arranged in parallel.
[0095] The width directions of the relative folded plates 211 , the parallel folded plates 221 and the parallel straight plates 231 are all extended along the second radial direction B.
[0096] The flow rate of water in the process of flocculation while flowing through the corresponding plates in the central flocculation module 21, the first lateral flocculation module 22 and the second lateral flocculation module 23 in sequence decreases in sequence.
[0097] The relative folded plates 211 can cause the water flow to generate violent turbulence, increasing the chance of collision between particles, the parallel folded plates 221 can gradually stabilize the water flow, which is conducive to the aggregation and sedimentation of particles, and the parallel straight plates 231 can further promote the sedimentation and separation of particles. By setting up the three types of plates, the raw water entering the flocculation unit 2 can achieve the best flocculation effect.
[0098] Preferably, the relative folded plate 211 and the parallel folded plate 221 have a width of 500-600 mm, a thickness of 5-10 mm, and a bending angle of 100°-120°. The parallel straight plate 231 has a thickness of 5-10 mm. The partition plate 24 has a thickness of 60-80 mm.
[0099] Furthermore, the sedimentation unit 3 includes a plurality of sedimentation modules 31 arranged along the first radial direction A at intervals.
[0100] Each sedimentation module 31 includes a plurality of sedimentation components arranged along the second radial direction B.
[0101] Each sedimentation assembly includes a vertical plate 3111 , a plurality of mud guide plates 3112 and a plurality of inclined plate bodies 3113 .
[0102] The width direction of the vertical plate 3111 extends along the first radial direction A.
[0103] A plurality of mud guide plates 3112 are arranged on the vertical plate 3111 at intervals along the width direction of the vertical plate 3111 .
[0104] Multiple inclined plates 3113 are arranged at intervals in the vertical direction, and the width direction of the inclined plate body 3113 extends along the first radial direction A, and the inclined upper end and the inclined lower end of the inclined plate body 3113 are respectively connected to the mud guide plate 3112 of the same sedimentation assembly and the vertical plate 3111 of the adjacent sedimentation assembly.
[0105] A water flow channel C extending horizontally along the first radial direction A is formed between two adjacent inclined plates 3113 , and the two adjacent inclined plates 3113 are respectively the top wall and the bottom wall of the water flow channel C. A sludge channel D is formed between two adjacent mud guide plates 3112 .
[0106] The outlet end of each flocculation unit 2 introduces flocculated water into the water flow channel C of the corresponding sedimentation unit 3, and the sludge settled in the water in the water flow channel C slides along the inclined plate 3113 to enter the sludge channel D and fall.
[0107] The sludge on the inclined plate 3113 slides down along the inclined plate 3113 and can enter the sludge channel D, and then falls along the vertically extending sludge channel D to discharge and settle the sludge in the water. Since the vertically extending sludge channel D formed between two adjacent mud guide plates 3112 is free of obstacles, the sludge on the inclined plate 3113 can smoothly slide into the sludge channel D and slide down, avoiding the sludge at the bottom of the inclined plate 3113 from being dispersed and entering the clean water after sedimentation again, thereby improving the sedimentation efficiency of mud-water separation. At the same time, the upper and lower sides of the inclined plate 3113 can fully contact the water, and its effective contact area is 100%, which improves the sedimentation efficiency.
[0108] Specifically, when the number of flocculation units 2 and sedimentation units 3 is one, a clean water collection tank 5 is provided at one end of the sedimentation unit 3 away from the flocculation unit 2, the clean water collection tank 5 is connected to the water flow channel C, and a water outlet 51 is provided at the upper part of the clean water collection tank 5. Clean water precipitated by the sedimentation unit 3 is collected in the clean water collection tank 5 through the water flow channel C, and overflows and is discharged from the water outlet 51.
[0109] When the number of the flocculation unit 2 and the number of the sedimentation unit 3 are both two, a clean water collection tank 5 is provided between the two sedimentation units 3, the clean water collection tank 5 is connected to the water flow channel C, and a water outlet 51 is provided at the upper portion of the clean water collection tank 5. Clean water after sedimentation by the two sedimentation units 3 is collected in the clean water collection tank 5 through the water flow channel C, and overflows and is discharged from the water outlet 51.
[0110] More specifically, the clean water collection trough 5 is an elongated trough body, and the length direction of the clean water collection trough 5 extends along the first radial direction A of the pool body 1 to fully utilize the space between the sedimentation unit 3 and the inner wall of the pool body 1 or between two sedimentation units 3, and is suitable for connecting the water flow channel C of multiple sedimentation modules 31 in the sedimentation unit 3.
[0111] Furthermore, the inner cavity of the tank body 1 is a trapezoidal shape that is wide at the top and narrow at the bottom. The flocculation unit 2 and the sedimentation unit 3 are both located at the upper part of the tank body 1 .
[0112] The clarifier tank further comprises a sludge discharge area 7 located at the lower part of the tank body 1. The sludge discharge channels of the flocculation unit 2 and the sedimentation unit 3 are both connected and discharge the sludge in the water to the sludge discharge area 7.
[0113] Therefore, by utilizing the trapezoidal shape of the tank body 1 which is wide at the top and narrow at the bottom, the flocculation unit 2 and the sedimentation unit 3 are arranged in the larger space at the top of the tank body 1, and the sludge discharge area 7 is arranged in the remaining space at the bottom of the tank body 1, so as to expand the setting volume of the flocculation unit 2 and the sedimentation unit 3, increase the raw water treatment capacity, and facilitate the sludge to be discharged downward into the sludge area 7 under the action of its own weight, thereby increasing the accommodation space of the sludge discharge area 7 and improving the sludge collection capacity.
[0114] Furthermore, the clarifier tank further comprises a water distribution plate 6 respectively located between the flocculation unit 2 and the sedimentation unit 3 , the water distribution plate 6 is vertically arranged and the width direction of the water distribution plate 6 extends along the first radial direction A of the tank body 1 . The water distribution plate 6 is provided with a plurality of water holes.
[0115] The water discharged from the water outlet of the flocculation unit 2 is buffered and discharged into the sedimentation unit 3 through the water holes of the water distribution plate 6 .
[0116] Specifically, a water distribution tank 9 is disposed between the flocculation unit 2 and the sedimentation unit 3 , and the water distribution plate 6 is disposed in the water distribution tank 9 .
[0117] More specifically, the water distribution trough 9 is an elongated trough body, and the length direction of the water distribution trough 9 extends along the first radial direction A of the tank body 1 to fully utilize the space between the flocculation unit 2 and the sedimentation unit 3, and is suitable for introducing the water flocculated by the multiple flocculation modules in the flocculation unit 2 into the multiple sedimentation modules 31 in the sedimentation unit 3.
[0118] Specifically, the flocculation unit 2, the sedimentation unit 3 and the water distribution plate 6 are located on the same setting plane of the upper part of the tank body 1, leaving space in the lower part of the tank body 1 to form a trapezoidal sludge discharge area 7 that is wide at the top and narrow at the bottom, so as to expand the accommodating space of the sludge discharge area 7, and facilitate the sludge discharged by the flocculation unit 2, the sedimentation unit 3 and the water distribution plate 6 to settle at the bottom of the sludge discharge area 7 under the action of its own weight, and also facilitate the discharge of the sludge accumulated at the bottom of the sludge area 7.
[0119] More specifically, the two sedimentation units 3 are located at the upper center of the tank body 1 , and the mud discharge area 7 is located at the lower center of the tank body 1 .
[0120] Since the inner cavity of the tank body 1 is a trapezoid that is wide at the top and narrow at the bottom, by locating the two sedimentation units 3 at the upper center of the tank body 1, and arranging the two flocculation units 2 and the two sedimentation units 3 opposite to each other, and the two flocculation units 2 are located on both sides of the two sedimentation units 3, and the two water distribution plates 6 are located between the flocculation units 2 and the corresponding sedimentation units 3, respectively, so that the two flocculation units 2, the two sedimentation units 3 and the two water distribution plates 6 are all located on the same plane of the upper part of the tank body 1, the space with larger length and width dimensions of the upper part of the tank body 1 is fully utilized, and the number and volume of the flocculation units 2 and the sedimentation units 3 are increased: the raw water is treated by the two flocculation units 2 and the two units 3 at the same time, so as to increase the scale of raw water treatment and improve the treatment efficiency. At the same time, each flocculation unit 2 includes at least n lateral flocculation modules arranged relatively on both sides of the central flocculation module 21 along or sequentially along the first radial direction A of the tank body 1, and each sedimentation unit 3 includes a plurality of sedimentation modules 31 arranged at intervals along the first radial direction A, so as to make full use of the space on the upper part of the tank body 1, increase the number of flocculation modules and sedimentation modules 31, and correspondingly extend the flocculation flow path, increase the flocculation reaction time, so as to increase the scale of raw water treatment, and improve the quality and efficiency of raw water treatment. Furthermore, the free space at the lower part of the tank body 1 is used to form a trapezoidal mud discharge area 7 that is wide at the top and narrow at the bottom, and the accommodation space of the mud discharge area 7 is expanded. The sludge discharged by the flocculation unit 2, the sedimentation unit 3 and the water distribution plate 6 can be discharged downward into the mud discharge area 7 through the mud discharge channel under the action of self-weight, thereby improving the mud discharge efficiency. In summary, the structures such as the flocculation unit 2, the sedimentation unit 3, the water distribution plate 6, and the mud discharge area 7 of the clarifier are arranged in the original tank body 1 through close arrangement and reasonable layout, and the scale of raw water treatment is increased, and the raw water treatment efficiency is improved.
[0121] Specifically, at least one first mud discharge pipe 25 is provided below each flocculation unit 2, and a plurality of mud discharge holes 251 are provided on the mud discharge pipe to communicate with the bottom end of the flocculation unit 2. A second mud discharge pipe 61 is provided at the bottom end of each water distribution plate 6. The bottom of the sedimentation module 31 is hollow.
[0122] The inner cavity of the first mud discharge pipe 25, the inner cavity of the second mud discharge pipe 61 and the bottom of the sedimentation module 31 all form mud discharge channels. The first mud discharge pipe 25, the second mud discharge pipe 61 and the bottom of the sedimentation module 31 are all connected and discharge the sludge into the mud discharge area 7 under the action of dead weight.
[0123] Specifically, at least one third mud discharge pipe 71 is connected to the mud discharge area 7 to discharge the mud to the outside of the tank body 1. Preferably, the third mud discharge pipe 71 is connected to the bottom of the mud discharge area 7 to facilitate mud discharge.
[0124] Furthermore, the clarifier tank further includes an inlet pipe 4, the interior of which forms an inlet channel for discharging raw water into the flocculation unit 2. The inlet pipe 4 includes a first branch pipe 41 and two second branch pipes 42 connected to the first branch pipe 41. The first branch pipe 41 is arranged in the mud discharge area 7, and the two second branch pipes 42 extend to the water inlet ends of the corresponding flocculation units 2, respectively, so as to make full use of the space of the mud discharge area 7, and there is no need to set additional channels for penetrating the first branch pipe 41 and the second branch pipe 42 on the tank body 1, thereby reducing the construction difficulty. The raw water entering the first branch pipe 41 enters the two second branch pipes 42 and is discharged into the corresponding flocculation unit 2.
[0125] Specifically, the first branch pipe 41 is vertically arranged, and the two second branch pipes 42 are connected to the top of the first branch pipe 41 and extend horizontally to the bottom of the corresponding flocculation unit 2 respectively.
[0126] Further, the specific construction method of the clarification tank is:
[0127] The two flocculation units 2 are fixed on the upper slope inside the tank body 1. The two sedimentation units 3 are supported on the upper part of the tank body 1 by the built support retaining wall 8. The water distribution plate 6 is fixed on the upper wall surface inside the tank body 1. In this way, the internal space of the tank body 1 can be fully utilized.
[0128] Specifically, after reinforcing bars are planted and braided on the inner wall of the tank body 1 , the support retaining wall 8 is built to separate the flocculation unit 2 from the sedimentation unit 3 and support the sedimentation unit 3 .
[0129] A plurality of steel sections are arranged on the support retaining wall 8, and the sedimentation module 31 is mounted on the steel sections, and is mounted on the support retaining wall 8 through the steel sections. The steel sections are connected to the support retaining wall 8 through expansion bolts. The top of the steel section support retaining wall 8 is leveled by a shim. HW steel sections are preferably used.
[0130] The bracket is arranged on the steel section to support and install the clean water collecting tank 5. Two water distribution tanks 9 are respectively provided with triangular support members on the supporting retaining wall 8 for support and fixing.
[0131] The partition is fixed to the wall surface of the tank body 1 through the angle steel mesh and expansion bolts.
[0132] From the above, it can be seen that the renovation construction process of this clarification tank is relatively simple and easy to construct.
[0133] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0134] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A clarification tank, comprising a tank body (1), characterized in that: It also includes a flocculation unit (2) and a sedimentation unit (3) both located inside the tank body (1); The water outlet end of the flocculation unit (2) is connected to the sedimentation unit (3); The flocculation unit (2) comprises a plurality of plates arranged at intervals in the horizontal direction, wherein the upper ends and lower ends of the plurality of plates are alternately opened; water entering the flocculation unit (2) flows along a curved path through the plurality of plates to be flocculated and then enters the sedimentation unit (3); The sedimentation unit (3) is provided with a plurality of water flow channels (C) and a plurality of sludge channels (D); the water flow channel (C) extends horizontally, and the top wall and the bottom wall of the water flow channel (C) are parallel and inclined; the sludge channel (D) extends vertically and is connected to the corresponding inclined lower end of the water flow channel (C); the flocculated water enters the water flow channel (C), the sludge precipitated in the water slides along the bottom wall of the water flow channel (C) and enters the corresponding sludge channel (D) and falls, and the clear water after precipitation is discharged from the water flow channel (C).
2. The clarifier according to claim 1, characterized in that The number of the flocculation unit (2) and the number of the sedimentation unit (3) are both two; The two flocculation units (2) and the two sedimentation units (3) are arranged opposite to each other, and the two flocculation units (2) are located on both sides of the two sedimentation units (3), and the water outlet end of each flocculation unit (2) is connected to the corresponding sedimentation unit (3).
3. The clarifier according to claim 2, characterized in that A clean water collecting trough (5) is provided between the two sedimentation units (3), the clean water collecting trough (5) is connected to the water flow channel (C), and a water outlet (51) is provided at the upper part of the clean water collecting trough (5); The clean water discharged from the water flow channel (C) is collected in the clean water collecting tank (5) and discharged from the water outlet (51).
4. The clarifier according to claim 1, characterized in that The flocculation unit (2) comprises a central flocculation module (21) and at least n lateral flocculation modules; n is an even number greater than or equal to 2; At least n lateral flocculation modules are arranged relatively on both sides of the central flocculation module (21) along or in sequence along a first radial direction (A) of the tank body (1); The water inlet end of the central flocculation module (21) is connected to the water inlet channel, the water outlet end of the central flocculation module (21) is connected to or sequentially connected to at least n lateral flocculation modules, and the water outlet end of the outermost lateral flocculation module is connected to the corresponding sedimentation unit (3).
5. The clarification tank according to claim 4, characterized in that The at least n lateral flocculation modules include two first lateral flocculation modules (22) and two second lateral flocculation modules (23), and the two first lateral flocculation modules (22) and the two second lateral flocculation modules (23) are sequentially arranged along the first radial direction (A) on both sides of the central flocculation module (21); The length directions of the central flocculation module (21) and the lateral flocculation module are both extended along the second radial direction (B) of the tank body (1); the second radial direction (B) is perpendicular to the first radial direction (A); The central flocculation module (21) and the lateral flocculation module each comprise a plurality of plates arranged in sequence and at intervals along the first radial direction (A); the adjacent central flocculation module (21), the first lateral flocculation module (22) and the second lateral flocculation module (23) are separated by a partition (24); the upper ends and lower ends of the plurality of plates are alternately opened and arranged along the first radial direction (A) of the tank body (1); The ends of the central flocculation module (21) and the lateral flocculation modules that are away from the sedimentation unit (3) are the first ends; the first end of the central flocculation module (21) is connected to the water inlet channel; the second end of the central flocculation module (21) is connected to the second end of the first lateral flocculation module (22); the first end of the first lateral flocculation module (22) is connected to the first end of the second lateral flocculation module (23); the second end of the second lateral flocculation module (23) is connected to the corresponding sedimentation unit (3); the water entering the central flocculation module (21), the first lateral flocculation module (22) and the second lateral flocculation module (23) flows through the corresponding plurality of plates in sequence along a curved path.
6. The clarifier according to claim 5, characterized in that The sedimentation unit (3) comprises a plurality of sedimentation modules (31) arranged at intervals along the first radial direction (A); Each sedimentation module (31) comprises a plurality of sedimentation components arranged along the second radial direction (B); Each sedimentation assembly includes a vertical plate (3111), a plurality of mud guide plates (3112) and a plurality of inclined plate bodies (3113); The width direction of the vertical plate (3111) is extended along the first radial direction (A); A plurality of mud guide plates (3112) are arranged on the vertical plate (3111) at intervals along the width direction of the vertical plate (3111); A plurality of inclined plates (3113) are arranged at intervals in the vertical direction, the width direction of the inclined plate bodies (3113) extends along the first radial direction (A), and the inclined upper end and the inclined lower end of the inclined plate bodies (3113) are respectively connected to the mud guide plate (3112) of the same sedimentation assembly and the vertical plate (3111) of the adjacent sedimentation assembly; The water flow channel (C) extending horizontally along the first radial direction (A) is formed between two adjacent inclined plates (3113), and the two adjacent inclined plates (3113) are respectively the top wall and the bottom wall of the water flow channel (C); the sludge channel (D) is formed between two adjacent mud guide plates (3112); The water outlet end of each flocculation unit (2) passes the flocculated water into the water flow channel (C) of the corresponding sedimentation unit (3), and the sludge precipitated in the water in the water flow channel (C) slides along the inclined plate (3113) to enter the sludge channel (D) and fall.
7. The clarifier according to claim 6, characterized in that The inner cavity of the tank body (1) is a trapezoidal shape that is wide at the top and narrow at the bottom; the flocculation unit (2) and the sedimentation unit (3) are both located at the upper part of the tank body (1); The clarifier tank further comprises a mud discharge area (7) located at the lower part of the tank body (1); The sludge discharge channels of the flocculation unit (2) and the sedimentation unit (3) are both connected and discharge the sludge in water into the sludge discharge area (7).
8. The clarifier according to claim 7, characterized in that It also includes a water distribution plate (6) respectively located between the flocculation unit (2) and the sedimentation unit (3); The water distribution plate (6) is located at the upper part of the tank body (1), the water distribution plate (6) is arranged vertically, and the width direction of the water distribution plate (6) extends along the first radial direction (A) of the tank body (1); The water distribution plate (6) is provided with a plurality of water holes, and the water discharged from the water outlet end of the flocculation unit (2) is buffered and discharged into the sedimentation unit (3) through the water holes of the water distribution plate (6).
9. The clarifier according to claim 8, characterized in that At least one first mud discharge pipe (25) is arranged below the flocculation unit (2), and a plurality of mud discharge holes (251) communicating with the bottom end of the flocculation unit (2) are arranged on the mud discharge pipe; The bottom end of the water distribution plate (6) is connected to a second mud discharge pipe (61); The bottom of the precipitation module (31) is hollowed out; The first mud discharge pipe (25), the second mud discharge pipe (61) and the bottom of the sedimentation module (31) are all connected to the mud discharge area (7), and the inner cavity of the first mud discharge pipe (25), the inner cavity of the second mud discharge pipe (61) and the bottom of the sedimentation module (31) form the mud discharge channel.
10. The clarifier according to claim 7, characterized in that The flocculation unit (2) is fixed on the upper slope inside the tank body (1); The sedimentation unit (3) is supported at the upper part of the tank body (1) by a supporting retaining wall (8); It also comprises a water inlet pipe (4), the interior of which forms the water inlet channel for discharging raw water into the flocculation unit (2); the water inlet pipe (4) comprises a first branch pipe (41) and two second branch pipes (42) connected to the first branch pipe (41); the first branch pipe (41) is arranged in the mud discharge area (7), and the two second branch pipes (42) respectively extend to the corresponding water inlet ends of the flocculation unit (2).