A resin column regeneration wastewater recovery system

Abstract

The utility model relates to wastewater treatment technical field, concretely relates to a resin tower regeneration wastewater recovery system, including wastewater tank, salted slag pool, plate and frame filter press and dechlorination salt water tank, wastewater tank, salted slag pool and dechlorination salt water tank are connected through water pump and pipe gallery pipeline between respectively, and the place of pipe gallery pipeline is provided with the liquid separation cylinder, the liquid separation cylinder includes the fixed cylinder that sets up horizontally, and its inside coaxial setting is the pivot, pivot side is installed with a plurality of sector's ration subpackaging box, the open side of ration subpackaging box is pasted fixed cylinder inner wall, pivot drive ration subpackaging box moves through the wastewater feed pipe, neutralizing agent feed pipe and the discharge pipe that set up on fixed cylinder in turn, rotation is installed with the spiral agitator for stirring wastewater and neutralizing agent in ration subpackaging box. The technical scheme is to the equal small part with adding the ration neutralizing agent respectively with wastewater, and the mixing ratio of both is accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a resin tower regeneration wastewater recovery system. Background Technology

[0002] Resin towers produce softened water and demineralized water through ion exchange. During the regeneration of ion exchange resins, a large amount of saline wastewater is discharged. If the wastewater is not treated before discharge, it will cause environmental pollution and waste of resources. In addition, the high chloride ion content in the regenerated wastewater will increase the cost of wastewater treatment.

[0003] Existing wastewater treatment systems require the addition of neutralizing agents to wastewater ponds for impurity removal. However, due to the large volume of wastewater, it is difficult to control the amount of neutralizing agent added, which can lead to agent waste and inadequate neutralization treatment of wastewater, resulting in serious environmental pollution. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a resin tower regeneration wastewater recovery system, comprising a wastewater tank, a salt slag pool, a plate and frame filter press, and a dechlorinated brine tank. The wastewater tank, salt slag pool, and dechlorinated brine tank are connected by water pumps and pipe corridors, respectively. A dispensing cylinder is installed at the pipe corridor, comprising a horizontally arranged fixed cylinder and a rotating shaft coaxially arranged inside it. Several fan-shaped quantitative dispensing boxes are installed around the rotating shaft, with the open side of the quantitative dispensing boxes fitting against the inner wall of the fixed cylinder. The rotating shaft drives the quantitative dispensing boxes to move sequentially through a wastewater inlet pipe, a neutralizing agent inlet pipe, and an outlet pipe arranged on the fixed cylinder. A spiral stirrer for stirring the wastewater and neutralizing agent is rotatably installed inside the quantitative dispensing boxes.

[0005] To ensure that the quantitative dispensing box rotates stably with the rotating shaft, the following features are specifically designed: the outer wall of the rotating shaft is provided with a number of limiting strips equal to the number of quantitative dispensing boxes, the limiting strips extend along the axis of the rotating shaft, the bottom surface of the quantitative dispensing box is provided with a limiting groove that matches the limiting strips, and the quantitative dispensing box is installed on the circumference of the rotating shaft through the limiting groove and the limiting strips.

[0006] Preferably, limit rings are coaxially installed at both ends of the rotating shaft, and the limit rings are attached to the limit strip and the two ends of the quantitative dispensing box.

[0007] To enable quantitative dispensing and the addition of wastewater, neutralizing agent, and drainage, the following features are specifically designed: the wastewater inlet pipe is located at the top of the fixed cylinder, the neutralizing agent inlet pipe is located on one side of the wastewater inlet pipe, and the outlet pipe is located at the bottom of the fixed cylinder.

[0008] Preferably, a one-way liquid inlet valve is provided at the neutralizing agent inlet pipe.

[0009] To ensure that the mixture can be completely discharged naturally through the discharge pipe under the action of gravity, the following features are specifically provided: the connection between the discharge pipe and the fixed cylinder has a connecting opening that is not less than the length of the quantitative dispensing box.

[0010] In order to drive the rotating shaft to rotate, the following features are specifically provided: a rotary driver for driving the rotating shaft to rotate is fixedly installed on the outside of the fixed cylinder.

[0011] To achieve the purpose of automatic rotation and stirring of the spiral stirrer during the movement of the quantitative dispensing box, the following features are specifically designed: the spiral stirrer has an external toothed groove on its circumference at one end outside the quantitative dispensing box; the outer wall of the quantitative dispensing box has an internal toothed ring surrounding the spiral stirrer; several planetary gears are meshed and installed in the external toothed groove and the internal toothed ring; the planetary gears are all mounted on a planetary carrier; the planetary carrier is coaxially arranged with the spiral stirrer; the outer wall of the fixed cylinder has a fixed toothed ring surrounding its circumference; a drive gear that meshes with the fixed toothed ring is rotatably installed on the outer wall of the quantitative dispensing box; the drive gear is connected to the synchronous pulley at the axis of the planetary carrier via a synchronous belt drive.

[0012] The advantages of this utility model compared to the prior art are:

[0013] Firstly, this invention uses a fixed cylinder and a rotating shaft inside the separator to drive the quantitative dispensing box to circulate, dividing the wastewater into equal portions and adding a quantitative amount of neutralizing agent to each portion. This precisely controls the mixing ratio of the two, solving the problem of difficulty in controlling the amount of neutralizing agent used due to the high wastewater content in traditional treatment methods. It avoids agent waste and inadequate neutralization, thus reducing the risk of environmental pollution.

[0014] Secondly, this utility model uses a fixed gear ring and drive gear to transmit power, converting the kinetic energy of the quantitative dispensing box into the rotational power of the spiral stirrer on the quantitative dispensing box. This eliminates the need for an additional independent drive motor, allowing wastewater and neutralizing agent to mix quickly and evenly, thus improving the neutralization reaction efficiency.

[0015] Thirdly, the transmission system composed of the external toothed groove, internal toothed ring, planetary gear, and planetary frame of this utility model can make the rotational speed of the spiral stirrer greater than the rotational speed of the shaft, thereby improving the stirring effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional view of a separator in a resin tower regeneration wastewater recovery system.

[0018] Figure 2 for Figure 1 A magnified view of part A.

[0019] Figure 3 This is a side view of a separator in a resin tower regeneration wastewater recovery system.

[0020] Figure 4 for Figure 3 Sectional view of section BB.

[0021] Figure 5 This is an exploded three-dimensional view of the separator in a resin tower regeneration wastewater recovery system.

[0022] Figure 6 for Figure 5 A magnified view of a portion of point C.

[0023] Explanation of reference numerals in the attached drawings: 1. Separating cylinder; 1a. Fixed cylinder; 1a1. Wastewater inlet pipe; 1a2. Neutralizing agent inlet pipe; 1a3. Discharge pipe; 1a4. One-way inlet valve; 1b. Rotating shaft; 1b1. Limiting strip; 1b2. Limiting ring; 1b3. Rotary actuator; 1c. Quantitative dispensing box; 1c1. Spiral stirrer; 1c2. Limiting groove; 1c3. External toothed groove; 1c4. Internal toothed ring; 1c5. Planetary gear; 1c6. Planetary carrier; 1c7. Drive gear; 1c8. Synchronous pulley; 1c9. Synchronous belt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 6 :

[0026] A resin tower regeneration wastewater recovery system includes a wastewater tank, a salt slag pool, a plate and frame filter press, and a dechlorinated brine tank. The wastewater tank, salt slag pool, and dechlorinated brine tank are connected by water pumps and pipe corridors, respectively. A dispensing cylinder 1 is installed at the pipe corridor. The dispensing cylinder 1 includes a horizontally arranged fixed cylinder 1a and a rotating shaft 1b coaxially arranged inside it. Several fan-shaped quantitative dispensing boxes 1c are installed around the rotating shaft 1b. The open side of the quantitative dispensing box 1c is attached to the inner wall of the fixed cylinder 1a. The rotating shaft 1b drives the quantitative dispensing box 1c to move sequentially through the wastewater inlet pipe 1a1, the neutralizing agent inlet pipe 1a2, and the outlet pipe 1a3 arranged on the fixed cylinder 1a. A spiral agitator 1c1 for stirring wastewater and neutralizing agent is rotatably installed inside the quantitative dispensing box 1c.

[0027] The recycling system in this application is used to treat wastewater after resin tower regeneration. The primary refined brine from the salt desalination plant is heated to 60±5℃ by a brine heater and then sent to a filtered brine tank. The filtered brine, pumped by a filtered brine pump, is then fed into three chelating resin towers connected in series to achieve Ca2+ and Mg2+ levels at the PPb level. Two chelating resin towers operate normally online, while the other is regenerated offline, with a regeneration frequency of once per day. The resin tower regeneration steps, usage time, and materials used are shown in the following diagram:

[0028]

[0029] The wastewater from washing I, backwashing, and brine replacement (approximately 142.4 m³) enters the brine recovery tank (170 m³), ​​where it is pumped to the salt treatment tank by the brine recovery pump. The wastewater from acid regeneration, washing II, alkali regeneration, and washing III (approximately 188.98 m³) enters the wastewater tank (230 m³), ​​which is then pumped to the salt treatment slag pool via wastewater pumps and pipe corridors. After entering the salt treatment slag pool, the regenerated wastewater passes through a plate and frame filter press and then enters the dechlorination brine tank to combine with the neutralizing agent for dechlorination. In this application, a liquid separator 1 is installed at the pipe gallery. Wastewater from the pipe gallery is transported to the fixed cylinder 1a of the liquid separator 1, and then enters the rotating quantitative dispensing box 1c through the wastewater inlet pipe 1a1, filling a single quantitative dispensing box 1c. Subsequently, the quantitative dispensing box 1c is driven by the rotating shaft 1b to move circumferentially along the inner wall of the fixed cylinder 1a. When the quantitative dispensing box 1c carrying the wastewater moves below the neutralizing agent inlet pipe 1a2, the neutralizing agent is precisely injected into the quantitative dispensing box 1c through the inlet pipe. Then, the spiral stirrer 1c1 inside the quantitative dispensing box 1c rotates to fully mix the wastewater and the neutralizing agent. After mixing is completed, the rotating shaft 1a1... b continues to drive the quantitative dispensing box 1c to the position of the discharge pipe 1a3, and the mixed liquid is discharged through the discharge pipe 1a3. In this embodiment, the fixed cylinder 1a inside the dispensing cylinder 1 cooperates with the rotating shaft 1b to drive the quantitative dispensing box 1c to circulate, dividing the wastewater into equal small portions and adding a quantitative amount of neutralizing agent to each portion, accurately controlling the mixing ratio of the two, solving the problem of difficulty in controlling the amount of neutralizing agent due to the large wastewater content in the traditional treatment method, avoiding agent waste and inadequate neutralization treatment, and reducing the risk of environmental pollution; the spiral stirrer 1c1 inside the quantitative dispensing box 1c can make the wastewater and neutralizing agent mix quickly and evenly, improving the neutralization reaction efficiency.

[0030] To ensure that the quantitative dispensing box 1c rotates stably with the rotating shaft 1b, the following features are specifically designed:

[0031] The outer wall of the rotating shaft 1b is provided with the same number of limiting strips 1b1 as the quantitative dispensing boxes 1c. The limiting strips 1b1 extend along the axis of the rotating shaft 1b. The bottom surface of the quantitative dispensing box 1c is provided with a limiting groove 1c2 that matches the limiting strips 1b1. The quantitative dispensing box 1c is installed on the periphery of the rotating shaft 1b through the limiting groove 1c2 and the limiting strips 1b1.

[0032] Limiting rings 1b2 are coaxially installed at both ends of the rotating shaft 1b, and the limiting rings 1b2 fit into the limiting strip 1b1 and the two ends of the quantitative dispensing box 1c.

[0033] like Figures 4 to 6As shown, in this embodiment, during the installation stage of the quantitative dispensing box 1c, the limiting groove 1c2 on its bottom surface is aligned with the limiting strip 1b1 on the outer periphery of the rotating shaft 1b, so that the limiting strip 1b1 is completely embedded in the limiting groove 1c2, completing the assembly and fixation of the quantitative dispensing box 1c and the rotating shaft 1b. When the rotating shaft 1b starts to rotate, the limiting strip 1b1 on its outer wall generates a circumferential driving force through its fitting and engaging action with the limiting groove 1c2 on the bottom surface of the quantitative dispensing box 1c, causing the quantitative dispensing box 1c to rotate synchronously. At the same time, the limiting rings 1b2 at both ends of the rotating shaft 1b position the quantitative dispensing box 1c along its axis, preventing the quantitative dispensing box 1c from sliding, deflecting, or falling off during the rotation of the rotating shaft 1b, thus ensuring the continuity and stability of the quantitative conveying, mixing, and discharging process.

[0034] To achieve the quantitative dispensing box 1c and the operations of adding wastewater, adding neutralizing agent, and draining water, the following features are specifically designed:

[0035] Wastewater inlet pipe 1a1 is located at the top of fixed cylinder 1a, neutralizing agent inlet pipe 1a2 is located on one side of wastewater inlet pipe 1a1, and discharge pipe 1a3 is located at the bottom of fixed cylinder 1a.

[0036] A one-way liquid inlet valve 1a4 is installed at the neutralizer inlet pipe 1a2.

[0037] like Figure 4 As shown in this embodiment, when the rotating shaft 1b drives the quantitative dispensing box 1c to rotate circumferentially along the inner wall of the fixed cylinder 1a, the quantitative dispensing box 1c first moves to below the wastewater inlet pipe 1a1 at the top of the fixed cylinder 1a. Wastewater is injected into the quantitative dispensing box 1c from top to bottom through the inlet pipe, completing the quantitative wastewater loading. Then, the rotating shaft 1b continues to drive the quantitative dispensing box 1c to rotate to the position of the neutralizing agent inlet pipe 1a2 on the side of the wastewater inlet pipe 1a1. At this time, the one-way liquid inlet valve 1a4 at the neutralizing agent inlet pipe 1a2 opens, and the neutralizing agent is injected directionally into the quantitative dispensing box 1c to mix with the wastewater. The one-way liquid inlet valve 1a4 can prevent the neutralizing agent from flowing back or leaking. After the mixing is completed, the quantitative dispensing box 1c rotates with the rotating shaft 1b to the discharge pipe 1a3 at the bottom of the fixed cylinder 1a. The mixed liquid is naturally discharged through the discharge pipe 1a3 under the action of gravity and enters the subsequent processing process.

[0038] To ensure that the mixture can be completely discharged naturally through the discharge pipe 1a3 under the action of gravity, the following features are specifically designed:

[0039] The connection between the discharge pipe 1a3 and the fixed cylinder 1a has a connecting port with a length not less than that of the quantitative dispensing box 1c.

[0040] like Figure 1 As shown, the following features are specifically designed to drive the shaft to rotate:

[0041] A rotary driver 1b3 for driving the rotating shaft 1b to rotate is fixedly installed on the outside of the fixed cylinder 1a.

[0042] To achieve the goal of automatic rotation and stirring of the spiral stirrer 1c1 during the movement of the quantitative dispensing box 1c, the following features are specifically designed:

[0043] The spiral stirrer 1c1 has an external toothed groove 1c3 on one side of its outer end outside the quantitative dispensing box 1c. The outer wall of the quantitative dispensing box 1c has an internal toothed ring 1c4 surrounding the spiral stirrer 1c1. Several planetary gears 1c5 are meshed in the external toothed groove 1c3 and the internal toothed ring 1c4. The planetary gears 1c5 are all mounted on the planetary carrier 1c6. The planetary carrier 1c6 is coaxial with the spiral stirrer 1c1. The outer wall of the fixed cylinder 1a has a fixed toothed ring 1a5 surrounding its outer side. The outer wall of the quantitative dispensing box 1c has a drive gear 1c7 that meshes with the fixed toothed ring 1a5. The drive gear 1c7 is connected to the synchronous pulley 1c8 at the axis of the planetary carrier 1c6 via a synchronous belt 1c9.

[0044] like Figure 2 and Figure 6 As shown, in this embodiment, when the rotating shaft 1b drives the quantitative dispensing box 1c to revolve around the inner wall of the fixed cylinder 1a, the driving gear 1c7 rotatably mounted on the outer wall of the quantitative dispensing box 1c maintains meshing with the fixed gear ring 1a5 surrounding the outer wall of the fixed cylinder 1a. As the quantitative dispensing box 1c revolves, the driving gear 1c7 rolls along the fixed gear ring 1a5 and rotates. The driving gear 1c7 forms a transmission engagement with the synchronous wheel 1c8 at the axis of the planetary carrier 1c6 through the synchronous belt 1c9, driving the planetary carrier 1c6 to rotate synchronously. Since the planetary wheel 1c5 on the planetary carrier 1c6 simultaneously meshes with the outer tooth groove 1c3 on the periphery of the spiral stirrer 1c1 and the inner tooth ring 1c4 on the outer wall of the quantitative dispensing box 1c, Driven by the planetary carrier 1c6, the planetary gear 1c5 performs planetary motion between the inner gear ring 1c4 and the outer gear groove 1c3, thereby driving the spiral stirrer 1c1 to rotate automatically within the quantitative dispensing box 1c, continuously stirring and mixing the wastewater and neutralizing agent. In this embodiment, the meshing transmission between the fixed gear ring 1a5 and the drive gear 1c7 converts the kinetic energy of the quantitative dispensing box 1c into the rotational power of the spiral stirrer 1c1, eliminating the need for an additional independent drive motor, thus achieving automation and energy saving of the stirring action. The transmission system composed of the outer gear groove 1c3, the inner gear ring 1c4, the planetary gear 1c5, and the planetary carrier 1c6 can make the rotational speed of the spiral stirrer 1c1 greater than the rotational speed of the shaft 1b, improving the stirring effect.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A resin tower regeneration wastewater recovery system, comprising a wastewater tank, a salt slag tank, a plate and frame filter press, and a dechlorinated brine tank, wherein the wastewater tank, the salt slag tank, and the dechlorinated brine tank are respectively connected by water pumps and pipe corridors, characterized in that, A liquid separator (1) is provided at the pipe gallery. The liquid separator (1) includes a horizontally arranged fixed cylinder (1a) and a rotating shaft (1b) coaxially arranged inside it. Several fan-shaped quantitative dispensing boxes (1c) are installed around the rotating shaft (1b). The opening side of the quantitative dispensing box (1c) is attached to the inner wall of the fixed cylinder (1a). The rotating shaft (1b) drives the quantitative dispensing box (1c) to move sequentially through the wastewater inlet pipe (1a1), the neutralizing agent inlet pipe (1a2) and the outlet pipe (1a3) provided on the fixed cylinder (1a). The quantitative dispensing box (1c) is equipped with a spiral stirrer (1c1) for stirring wastewater and neutralizing agent.

2. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, The outer wall of the rotating shaft (1b) is provided with the same number of limiting strips (1b1) as the quantitative dispensing boxes (1c). The limiting strips (1b1) extend along the axis of the rotating shaft (1b). The bottom surface of the quantitative dispensing box (1c) is provided with a limiting groove (1c2) that matches the limiting strips (1b1). The quantitative dispensing box (1c) is installed on the periphery of the rotating shaft (1b) through the limiting groove (1c2) and the limiting strips (1b1).

3. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, Limiting rings (1b2) are coaxially installed at both ends of the rotating shaft (1b), and the limiting rings (1b2) fit into the limiting strip (1b1) and the two ends of the quantitative dispensing box (1c).

4. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, The wastewater inlet pipe (1a1) is located at the top of the fixed cylinder (1a), the neutralizing agent inlet pipe (1a2) is located on one side of the wastewater inlet pipe (1a1), and the discharge pipe (1a3) is located at the bottom of the fixed cylinder (1a).

5. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, A one-way liquid inlet valve (1a4) is provided at the neutralizer inlet pipe (1a2).

6. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, The connection between the discharge pipe (1a3) and the fixed cylinder (1a) has a connecting opening with a length not less than that of the quantitative dispensing box (1c).

7. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, A rotary driver (1b3) for driving the rotating shaft (1b) to rotate is fixedly installed on the outside of the fixed cylinder (1a).

8. The resin tower regeneration wastewater recovery system according to claim 1, characterized in that, The spiral stirrer (1c1) has an external toothed groove (1c3) on one side of the outer end of the quantitative dispensing box (1c). The outer wall of the quantitative dispensing box (1c) has an internal toothed ring (1c4) surrounding the spiral stirrer (1c1). Several planetary gears (1c5) are meshed in the external toothed groove (1c3) and the internal toothed ring (1c4). The planetary gears (1c5) are all mounted on the planet carrier (1c6). The planet carrier (1c6) is coaxially arranged with the spiral stirrer (1c1). The outer wall of the fixed cylinder (1a) has a fixed toothed ring (1a5) surrounding its periphery. The outer wall of the quantitative dispensing box (1c) is rotatably mounted with a drive gear (1c7) that meshes with the fixed toothed ring (1a5). The drive gear (1c7) is connected to the synchronous pulley (1c8) at the axis of the planet carrier (1c6) via a synchronous belt (1c9).

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