Sewage treatment device for dye processing

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device for dye processing. Comprising a sewage pool and pool bottom supporting columns, and a flocculation reaction area, a settling area and a water collecting area are sequentially arranged in the sewage pool in the sewage flowing direction; a plurality of groups of staggered baffle plates are arranged in the flocculation reaction zone to form a continuous zigzag water flow channel, and the tail end of the flocculation reaction zone is connected with a divergent guide plate; a detachable rectification perforated plate is arranged at an inlet of the settling zone, and a fillet rectification hole is formed in the rectification perforated plate; a plurality of groups of parallel corrugated inclined plates with inclination angles greater than or equal to 60 degrees are arranged in the settling area, and the tops of the corrugated inclined plates are positioned at the same height and are 30cm lower than the water surface; a sludge hopper with a taper angle of not less than 60 degrees is arranged at the bottom of the settling zone; a sawtooth weir is arranged at the top of the baffle; energy conservation, blockage prevention and water quality stabilization are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for dye processing. Background Technology

[0002] Wastewater treatment equipment for dye processing is a complete set of equipment specifically designed to degrade high concentrations of organic dyes, auxiliaries, and heavy metal ions in dyeing and printing wastewater. It typically includes units such as coagulation reaction, solid-liquid separation, and deep purification. Its core objective is to achieve a color removal rate of over 95% and a COD reduction of over 85% through a synergistic physical-chemical process, ultimately meeting the mandatory requirements of the "Water Pollutant Discharge Standard for Textile Dyeing and Finishing Industry" (GB4287-2012). This equipment is directly related to the environmental compliance and production sustainability of dye enterprises.

[0003] The key to treating dye wastewater lies in the structural defects of the flocculation unit: traditional devices generally use mechanical stirring to achieve reagent mixing and flocculation. The high-speed rotating blades generate high-intensity shear forces in the turbulent field, which easily destroys the unique three-dimensional network structure of organic polymer flocs in dye wastewater, such as those formed by polyacrylamide. This mechanical damage causes the floc particle size to break down to the micron level, triggering a triple chain reaction: broken flocs clump and clog the surface of the inclined plates in the sedimentation zone; unsettled micro-flocs penetrate the system, causing excessive suspended solids in the effluent; and dye molecules dissolve again, releasing color. Especially for reactive dyes containing sulfonic acid and azo groups, the increased ionization after floc breakage further exacerbates the treatment difficulty.

[0004] Therefore, this application provides a wastewater treatment device for dye processing to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a wastewater treatment device for dye processing, which solves the problems of mechanical stirring damaging flocs, causing sludge loss and color rebound, and insufficient inclination angle of inclined plates leading to frequent blockages in existing devices.

[0006] To solve the above-mentioned technical problems, this utility model provides a wastewater treatment device for dye processing, including a wastewater tank and a support column at the bottom of the tank. The wastewater tank is provided with a flocculation reaction zone, a sedimentation zone and a water collection zone arranged sequentially along the wastewater flow direction.

[0007] Several sets of staggered baffles are set in the flocculation reaction zone to form a continuous and tortuous water flow channel, and the end of the flocculation reaction zone is connected to a gradually expanding guide plate.

[0008] A detachable flow straightening perforated plate is installed at the inlet of the sedimentation zone, with rounded flow straightening holes on the flow straightening plate; several sets of parallel corrugated inclined plates with an inclination angle ≥60° are installed in the sedimentation zone, with the tops of the corrugated inclined plates at the same height and 30cm below the water surface; a sludge hopper with a cone angle ≥60° is installed at the bottom of the sedimentation zone.

[0009] A baffle is installed at the beginning of the water catchment area, and a sawtooth weir is installed on top of the baffle.

[0010] A further improvement of this utility model is that baffles are alternately fixed on the inner sidewalls of the sewage tank. The baffles are multiple sets of parallel vertical plates, which are arranged in an alternating manner along the sewage flow direction. The spacing between the baffles along the water flow direction increases by 10%-20%, and the channel width increases by 15%-25%.

[0011] A further improvement of this utility model is that a gradually expanding guide plate is set between the end of the flocculation reaction zone and the rectifier perforated plate, and the guide plate and the baffle plate are spliced ​​together to form a gradually expanding cavity with a diffusion angle of 30°-60°.

[0012] A further improvement of this utility model is that: corresponding vertical grooves are provided on the inner sidewalls of the sewage tank, and a rectifier perforated plate is detachably engaged in the grooves. The rectifier perforated plate is detachably engaged in the vertical grooves on the inner sidewalls of the sewage tank.

[0013] A further improvement of this utility model is that: corrugated inclined plates are set below the water surface in the sedimentation zone, at least 3 corrugated inclined plates are set, the corrugated inclined plates are set in a wave shape, and modular frames are set on both sides of the corrugated inclined plates for fixing, and lifting rings are set on the frames.

[0014] A further improvement of this utility model is that the sawtooth weir is located at the beginning of the water collection area, the sawtooth height is 30-50mm, and the tooth spacing is 50-100mm.

[0015] A further improvement to this utility model is that the top of the corrugated inclined plate is more than 20cm lower than the bottom of the sawtooth weir.

[0016] A further improvement of this utility model is that an end cap is provided at the top of the flocculation reaction zone, and an inlet valve and a dosing pipe are provided adjacent to the end cap. The bottom of the inlet valve and the dosing pipe extends to the starting position of the flocculation reaction zone through a pipe.

[0017] A further improvement to the technical solution of this utility model is that: a water outlet valve is provided at the end of the water collection area, and a sludge cleaning valve is provided at the bottom of the sludge hopper.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects:

[0019] 1. The wastewater treatment device for dye processing provided by the present invention completely abandons the traditional mechanical stirring structure by combining staggered baffles and gradually expanding guide plates in the flocculation reaction zone, and uses hydraulic self-disturbing to form a gradient flocculation environment; the increasing structure of baffle spacing and channel width matches the growth law of flocs, and the gradually expanding cavity eliminates sudden changes in water flow, providing double protection for the integrity of flocs, eliminating sludge runoff and color rebound caused by floc breakage from the source, and reducing maintenance costs by more than 40%.

[0020] 2. The wastewater treatment device for dye processing provided by this invention significantly improves solid-liquid separation efficiency through the synergistic design of a detachable rectifier perforated plate in the sedimentation zone and a corrugated inclined plate with an inclination angle of ≥60°. The rounded rectifier holes of the rectifier perforated plate smoothly transport complete flocs. The corrugated inclined plate with an inclination angle ≥60° combined with a wave-like surface accelerates sludge sliding and disperses water flow shear force. The modular frame supports rapid hoisting and cleaning, solving the industry problem of dye floc caking and blockage, and reducing the backwashing frequency from once a week to once a quarter.

[0021] 3. The wastewater treatment device for dye processing provided by the present invention ensures continuous and stable operation of the system through structural optimization of the sawtooth weir and sludge hopper; the specific tooth height and tooth spacing of the sawtooth weir breaks the surface flow state and collects the clarified water evenly; the top of the inclined plate is more than 20cm lower than the bottom of the sawtooth weir to form a sludge settling buffer zone; the sludge hopper with a cone angle ≥60° prevents sludge accumulation and bridging, and the sludge discharge is achieved with one-button sludge discharge in combination with the cleaning valve.

[0022] 4. The wastewater treatment device for dye processing provided by this invention significantly improves the practicality and maintainability of the device through its integrated and detachable design; the rectifier perforated plate and corrugated inclined plate modules all adopt a quick-release structure with slotted lifting; the inlet valve and dosing pipe are centrally arranged to avoid pipe cross-interference. The whole system supports separate maintenance, reducing downtime for maintenance by 80%, and is especially suitable for the high-load continuous production needs of dye enterprises. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an overall wastewater treatment device for dye processing.

[0025] Figure 2 A side view of a wastewater treatment device for dye processing;

[0026] Figure 3A top view of a wastewater treatment device for dye processing without an end cover;

[0027] Figure 4 This is a cross-sectional view of a wastewater treatment device for dye processing;

[0028] Figure 5 This is a cross-sectional view of a wastewater treatment device for dye processing;

[0029] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle;

[0030] Figure 7 for Figure 5 Enlarged schematic diagram of part B;

[0031] Figure 8 for Figure 1 A schematic diagram of the structure of a corrugated inclined plate.

[0032] Attached reference numerals: 1. Wastewater tank; 2. Support column; 3. Flocculation reaction zone; 31. Baffle plate; 32. Guide plate; 33. Channel; 34. End cap; 35. Inlet valve; 36. Dosing pipe; 37. Pipeline; 4. Sedimentation zone; 41. Rectifying perforated plate; 42. Rectifying hole; 43. Corrugated inclined plate; 44. Sludge hopper; 45. Groove; 46. Lifting ring; 47. Cleaning valve; 5. Water collection zone; 51. Baffle; 52. Sawtooth weir; 53. Sawtooth; 54. Outlet valve. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will be further explained below with reference to specific embodiments.

[0037] like Figures 1-8 As shown in this embodiment, a wastewater treatment device for dye processing includes a wastewater tank 1 and a bottom support column 2. A flocculation reaction zone 3, a sedimentation zone 4, and a water collection zone 5 are sequentially arranged along the water flow direction within the tank. Multiple sets of staggered baffles 31 are arranged within the flocculation reaction zone 3, forming a continuous and tortuous water flow channel 33 through alternating fixation to the sidewall of the wastewater tank 1. The spacing between the baffles 31 increases by 10%-20% along the water flow direction, and the width of the channel 33 increases by 15%-25%, achieving a gradient attenuation of flocculation energy from strong mixing to weak disturbance, avoiding mechanical shear damage to the flocs. A gradually expanding guide plate 32 at the end is spliced ​​with the baffles 31 to form a gradually expanding cavity with a diffusion angle of 30°-60°, eliminating sudden changes in flow velocity and protecting the structural integrity of the flocs. This structure uses hydraulic self-disturbance instead of mechanical energy input, achieving efficient flocculation of dye wastewater under zero-power conditions, preventing sludge runoff and color rebound caused by floc breakage from the source.

[0038] like Figures 1-6 As shown, in this embodiment, a detachable rectifier perforated plate 41 is installed at the inlet of the sedimentation zone 4. Its rounded rectifier holes 42 are designed to reduce eddies and lower shear stress when flocs pass through. The perforated plate is quickly disassembled and assembled via vertical slots 45, adapting to immediate maintenance in high-clogging-risk conditions. Corrugated inclined plates 43 with an inclination angle ≥60° are arranged parallel within the sedimentation zone 4. The wavy surface design disperses water flow shear force and accelerates sludge sliding. The top of the corrugated inclined plates 43 is uniformly 30cm below the water surface, and the bottom is connected to a sludge hopper 44 with a cone angle ≥60°. This double-slope structure completely eliminates dead zones for floc accumulation. The modular frame's lifting ring 46 design supports the overall lifting and cleaning of the inclined plate assembly, solving the persistent problem of dye floc caking. The three-stage synergy of the rectifier perforated plate 41, corrugated inclined plates 43, and sludge hopper 44 facilitates solid-liquid separation of dye wastewater. The inclination angle setting and quick-release structure of the corrugated inclined plates 43 reduce the backwashing frequency by 80%.

[0039] like Figures 4-7As shown, in this embodiment, a sawtooth weir 52 is installed on the top of the baffle 51 at the starting end of the water collection area 5. The precise specifications of the sawtooth 53, with a height of 30-50mm and a tooth spacing of 50-100mm, break the surface flow and evenly distribute the water collection load. The top of the corrugated inclined plate 43 is strictly 20cm lower than the bottom of the sawtooth weir 52, forming a safe buffer zone for sludge settling and preventing floating sludge from entering the effluent system. The fluid optimization design of the sawtooth weir 52 eliminates the edge water collection defects of traditional flat-topped weirs, and combined with the safety distance control of the inclined plate, ensures stable effluent.

[0040] like Figure 4 , Figure 5 , Figure 8 As shown, in this embodiment, the top end cap 34 of the flocculation reaction zone 3 integrates an inlet valve 35 and a dosing pipe 36, with an extension pipe 37 reaching directly to the reaction start point, enabling instantaneous and precise dosing of the reagent. The outlet valve 54 at the end of the water collection zone 5 and the bottom cleaning valve 47 of the sludge hopper 44 are separate, ensuring independent and controllable discharge of clarified water and sludge. The rectifier perforated plate 41 with its slotted 45 interlocking structure and the corrugated inclined plate 43 with its lifting ring 46 design create a minute-level response maintenance system. The entire device adopts a modular quick-disassembly architecture, improving maintenance efficiency by 300% and meeting the continuous operation requirements of the dye production line.

[0041] This utility model also provides the operating principle of a wastewater treatment device for dye processing:

[0042] The dye wastewater is introduced into the flocculation reaction zone 3 through the top inlet valve 35, and is fully mixed with the reagent added by the dosing pipe 36 in the continuous tortuous channel 33 formed by the staggered baffles 31. After the water flows smoothly through the gradually expanding guide plate 32, it enters the sedimentation zone 4 evenly through the rounded rectifier holes 42 of the rectifier perforated plate 41. The wastewater completes solid-liquid separation between the corrugated inclined plates 43 with an inclination angle of ≥60°. The sludge slides down the inclined plates to the sludge hopper 44 with a cone angle of ≥60° for temporary storage, and the clarified water rises to the collection zone 5. After the water flows through the sawtooth weir 52 at the top of the baffle 51 for even collection, it is discharged through the outlet valve 54 to meet the discharge standards. The sludge accumulated in the sludge hopper 44 is periodically discharged through the cleaning valve 47, realizing the whole process of non-powered flocculation anti-clogging separation and intelligent operation and maintenance.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wastewater treatment device for dye processing, characterized in that, It includes a sewage tank (1) and a bottom support column (2). The sewage tank (1) is arranged in sequence along the sewage flow direction as a flocculation reaction zone (3), a sedimentation zone (4) and a water collection zone (5). Several sets of staggered baffles (31) are set in the flocculation reaction zone (3) to form a continuous tortuous water flow channel (33), and the end of the flocculation reaction zone (3) is connected to a gradually expanding guide plate (32); A detachable rectifier perforated plate (41) is installed at the inlet of the sedimentation zone (4), and rounded rectifier holes (42) are provided on the rectifier perforated plate (41); several sets of parallel corrugated inclined plates (43) with an inclination angle ≥60° are installed in the sedimentation zone (4), and the top of the corrugated inclined plates (43) is at the same height and 30cm below the water surface; a sludge hopper (44) with a cone angle ≥60° is installed at the bottom of the sedimentation zone (4); A baffle (51) is installed at the beginning of the water collection area (5), and a sawtooth weir (52) is installed on the top of the baffle (51).

2. The wastewater treatment device for dye processing according to claim 1, characterized in that, The inner walls of the sewage tank (1) are alternately fixed with baffles (31). The baffles (31) are multiple sets of parallel vertical plates, which are arranged in an alternating manner along the sewage flow direction. The spacing of the baffles (31) along the water flow direction increases by 10%-20%, and the width of the channel (33) increases by 15%-25%.

3. The wastewater treatment device for dye processing according to claim 1, characterized in that, A gradually expanding guide plate (32) is set between the end of the flocculation reaction zone (3) and the rectifier perforated plate (41). The guide plate (32) and the baffle plate (31) are spliced ​​together to form a gradually expanding cavity with a diffusion angle of 30°-60°.

4. The wastewater treatment device for dye processing according to claim 1, characterized in that, A vertical groove (45) is provided on the inner side wall of the sewage tank (1). A rectifier perforated plate (41) is detachably engaged in the groove (45). The rectifier perforated plate (41) is detachably engaged in the vertical groove (45) on the inner side wall of the sewage tank (1).

5. The wastewater treatment device for dye processing according to claim 1, characterized in that, The corrugated inclined plate (43) is set below the water surface in the sedimentation zone (4). At least three corrugated inclined plates (43) are set. The corrugated inclined plate (43) is set in a wave shape. Modular frames are set on both sides of the corrugated inclined plate (43) for fixing. Lifting rings (46) are set on the frames.

6. The wastewater treatment device for dye processing according to claim 1, characterized in that, The sawtooth weir (52) is located at the beginning of the water catchment area (5), and the height of the sawtooth (53) is 30-50mm and the tooth spacing is 50-100mm.

7. A wastewater treatment device for dye processing according to claim 3, characterized in that, The top of the corrugated inclined plate (43) is more than 20cm lower than the bottom of the sawtooth weir (52).

8. A wastewater treatment device for dye processing according to claim 1, characterized in that, An end cap (34) is provided at the top of the flocculation reaction zone (3). An inlet valve (35) and a dosing pipe (36) are provided adjacent to the end cap (34). The bottom of the inlet valve (35) and the dosing pipe (36) extends to the starting position of the flocculation reaction zone (3) through a pipe (37).

9. A wastewater treatment device for dye processing according to claim 1, characterized in that, A water outlet valve (54) is installed at the end of the water collection area (5), and a sludge cleaning valve (47) is installed at the bottom of the sludge hopper (44).

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