Reactor for alkaline rinsing wastewater treatment system

Abstract

The utility model discloses a reactor for an alkaline rinsing wastewater treatment system. The reactor comprises a flocculation reaction tank; the coagulant mixing mechanism comprises a fixed cylinder arranged at the upper part of the flocculation reaction tank, and a mixing shaft is rotationally mounted in the fixed cylinder; the coagulant adding mechanism comprises a quantitative dosing pipe and a quantitative water adding pipe which are connected into the fixed cylinder; the mixing driving mechanism comprises a first metering pump for pumping and draining supernate and a return pipe, a rotating rod is transversely and rotatably mounted on the fixed barrel, one end of the rotating rod is inserted into the return pipe and is fixedly connected with a corresponding impeller, and the rotating rod is in transmission connection with the mixing shaft; the spiral water passing pipe is wound on the outer side of the fixed barrel, the water inlet end of the spiral water passing pipe is connected to the water outlet end of the sewage concentration tank, and the water outlet end of the spiral water passing pipe is connected into the flocculation reaction tank. According to the utility model, the uniform mixing of the alkaline rinsing wastewater and the coagulant can be effectively realized without power intervention.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of wastewater treatment technical field, specifically refers to a reactor for alkaline rinsing wastewater treatment system. BACKGROUND

[0002] Paint spraying wastewater is alkaline wastewater, and a large number of paint particles are contained in the wastewater, and the water quality is determined by the used paint, solvent and additive. The core of the commonly used paint spraying wastewater treatment method is to add a coagulant for coagulation reaction. After the coagulation reaction, the wastewater is precipitated, and the supernatant is pumped out for further treatment and then discharged or reused. The precipitated part is then put into the corresponding filter pressing equipment for filter pressing treatment. The filtrate after filter pressing is treated again and then discharged or reused, and the filter cake is collected and treated uniformly.

[0003] The existing reactor for alkaline rinsing wastewater treatment system generally includes a flocculation reaction tank and a stirring mechanism arranged in the flocculation reaction tank. The coagulant is mixed and prepared by an external coagulant mixing mechanism, and the prepared coagulant is injected into the flocculation reaction tank to fully react with the alkaline rinsing wastewater. After the flocculation reaction, the material is subjected to solid-liquid separation treatment after being precipitated in a sedimentation tank. Since the stirring mechanism needs to be arranged in the flocculation reaction tank to stir the alkaline rinsing wastewater and the coagulant, the coagulant mixing mechanism must be arranged externally, which results in a relatively high space occupancy rate of the equipment.

[0004] Therefore, the purpose of the present utility model is to design a reactor for alkaline rinsing wastewater treatment system that can effectively mix the alkaline rinsing wastewater and the coagulant uniformly without power intervention, so that the dosing mechanism can be arranged directly in the flocculation reaction tank to reduce the space occupancy rate of the equipment. SUMMARY

[0005] In view of the technical problems existing in the prior art, the present utility model provides a reactor for alkaline rinsing wastewater treatment system that can effectively solve the above technical problems.

[0006] The technical solution of the present utility model is as follows:

[0007] A reactor for alkaline rinsing wastewater treatment system, comprising:

[0008] a flocculation reaction tank connected to the outlet of a corresponding sewage collection tank, and an outlet of the flocculation reaction tank connected to a corresponding sedimentation tank;

[0009] The utility model relates to a coagulant mixing mechanism, including the fixed cylinder body of setting in the upper portion of flocculation reaction pool, the fixed cylinder body's upper and lower end respectively fixedly connected with corresponding baffle, rotatingly installed with a corresponding mixing shaft between the baffle, fixedly installed with corresponding stirring vane on the mixing shaft,

[0010] Coagulant adding mechanism, including dosing pipe and dosing water pipe connected to the fixed cylinder body between the baffle, the dosing pipe and dosing water pipe are connected to the outside medicament source and tap water source respectively;

[0011] Mixing drive mechanism, including the first dosing pump and backflow pipe for pumping the supernatant of the sedimentation tank to the sewage concentration tank, a corresponding rotating rod is transversely rotatingly installed on the fixed cylinder body, one end of the rotating rod is inserted into the backflow pipe and fixedly connected with a corresponding impeller, one end of the rotating rod connected to the fixed cylinder body is drivingly connected to the mixing shaft,

[0012] Spiral water pipe, coiled on the outside of the fixed cylinder body, the water inlet end of the spiral water pipe is connected to the water outlet end of the sewage concentration tank, the water outlet end of the spiral water pipe is connected to the flocculation reaction pool, a second dosing pump for dosing coagulant in the fixed cylinder body to the upper side of the spiral water pipe is fixedly connected to the fixed cylinder body.

[0013] The concentration meter is arranged in the flocculation reaction pool, and the flocculation reaction pool is fixedly connected with an adjusting pipe for bypassing the backflow pipe connected to the liquid outlet end of the first dosing pump, and the backflow pipe and the adjusting pipe are respectively fixedly connected with corresponding electromagnetic valves.

[0014] The mounting seat is fixedly installed on the outside of the flocculation reaction pool, and the first dosing pump is fixedly installed on the mounting seat.

[0015] One end of the rotating rod connected to the fixed cylinder body is drivingly connected to the bottom of the mixing shaft by gear engagement.

[0016] The water inlet end of the spiral water pipe is connected to the water outlet end of the sewage concentration tank through a corresponding waste water flow-through pump and waste water flow-through pipe.

[0017] The stirring vane is fixedly installed on the mixing shaft in a spiral state.

[0018] The utility model discloses the advantages of:

[0019] 1) The coagulant mixing mechanism comprises a fixed cylinder arranged on the upper portion of the flocculation reaction tank, corresponding baffles are fixedly connected to the upper and lower ends of the fixed cylinder, a mixing shaft is rotatably installed between the baffles, and corresponding stirring blades are fixedly installed on the mixing shaft. During the batching process, only the first quantitative pump needs to be started to pump part of the supernatant in the sedimentation tank back to the sewage collection tank. During this process, the water flow drives the impeller to rotate to drive the rotating rod to drive the mixing shaft, thereby mixing the medicament and water in the fixed cylinder to mix and configure the coagulant; after the configuration is completed, the coagulant is continuously pumped into the spiral water pipe under the pumping of the second quantitative pump, and uniformly mixed with the continuously flowing alkaline rinsing wastewater in the spiral water pipe, and the mixed alkaline rinsing wastewater and coagulant are flushed into the flocculation reaction tank to further stir the water in the flocculation reaction tank, thereby further ensuring the mixing effect and ensuring the uniform mixing of the alkaline rinsing wastewater and the coagulant.

[0020] Therefore, the uniform mixing of the alkaline rinsing wastewater and the coagulant can be effectively realized without power intervention, and since no additional stirring mechanism is needed, the coagulant mixing mechanism can be directly arranged in the flocculation reaction tank to reduce the overall space occupancy of the utility model.

[0021] 2) The utility model further comprises a concentration meter arranged in the flocculation reaction tank, the flocculation reaction tank is fixedly connected with an adjusting pipe bypass connected to a reflux pipe, and corresponding electromagnetic valves are fixedly connected to the reflux pipe and the adjusting pipe. During the mixing process of the coagulant, the electromagnetic valve on the reflux pipe is opened and the electromagnetic valve on the adjusting pipe is closed; after the coagulant mixing is completed, the electromagnetic valves on the reflux pipe and the adjusting pipe are closed respectively; during the flocculation reaction process, the concentration of the material in the flocculation reaction tank is detected by the concentration meter, when the solid content in the flocculation reaction tank is too high, the material in the flocculation reaction tank is not easy to discharge to the sedimentation tank, at this time, the electromagnetic valve on the adjusting pipe is opened to quantitatively pour the supernatant into the flocculation reaction tank through the adjusting pipe, so that the material in the flocculation reaction tank can be more easily discharged to the sedimentation tank. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the utility model.

[0023] Figure 2 It is a structural schematic view of the flocculation reaction tank provided with the coagulant mixing mechanism.

[0024] Figure 3 It is a structural schematic view of the coagulant mixing mechanism.

[0025] Figure 4 It is a sectional view of the coagulant mixing mechanism.

[0026] In the drawing: flocculation reaction tank 1, sewage concentration tank 2, sedimentation tank 3, coagulant mixing mechanism 4, fixed cylinder body 401, partition plate 402, mixing shaft 403, stirring blade 404, coagulant adding mechanism 5, quantitative dosing pipe 501, quantitative water adding pipe 502, mixing drive mechanism 6, first quantitative pump 601, return pipe 602, rotating rod 7, impeller 8, spiral water pipe 9, second quantitative pump 10, adjusting pipe 11, mounting seat 12, waste water circulation pump 13, waste water circulation pipe 14. DETAILED DESCRIPTION

[0027] In order to facilitate those skilled in the art to understand, the structure of the utility model will be further described in detail in combination with the drawings:

[0028] Reference Figures 1-4 A reactor for an alkaline rinse wastewater treatment system, comprising:

[0029] The flocculation reaction tank 1 is connected to the water outlet end of the corresponding sewage concentration tank 2, and the discharge end of the flocculation reaction tank 1 is connected to the corresponding sedimentation tank 3;

[0030] The coagulant mixing mechanism 4 comprises a fixed cylinder body 401 arranged at the upper portion of the flocculation reaction tank 1, the upper and lower ends of the fixed cylinder body 401 are respectively fixedly connected with corresponding partition plates 402, a mixing shaft 403 is rotatably arranged between the partition plates 402, and corresponding stirring blades 404 are fixedly arranged on the mixing shaft 403;

[0031] The coagulant adding mechanism 5 comprises a quantitative dosing pipe 501 and a quantitative water adding pipe 502 connected in the fixed cylinder body 401 between the partition plates 402, the quantitative dosing pipe 501 and the quantitative water adding pipe 502 are respectively connected to an external medicament source and a tap water source;

[0032] The mixing drive mechanism 6 comprises a first quantitative pump 601 and a return pipe 602 for pumping the supernatant of the sedimentation tank 3 to the sewage concentration tank 2, a rotating rod 7 is transversely rotatably arranged on the fixed cylinder body 401, one end of the rotating rod 7 not connected to the fixed cylinder body 401 is inserted into the return pipe 602 and fixedly connected with a corresponding impeller 8, and one end of the rotating rod 7 connected to the fixed cylinder body 401 is drivingly connected to the mixing shaft 403;

[0033] The spiral water pipe 9 is coiled and arranged outside the fixed cylinder body 401, the water inlet end of the spiral water pipe 9 is connected to the water outlet end of the sewage concentration tank 2, the water outlet end of the spiral water pipe 9 is connected to the flocculation reaction tank 1, and a second quantitative pump 10 for quantitatively pumping the coagulant in the fixed cylinder body 401 to the upper side of the spiral water pipe 9 is fixedly connected to the fixed cylinder body 401.

[0034] The coagulant mixing mechanism 4 of the utility model contains the fixed cylinder 401 of setting in the flocculation reaction pool 1 upper portion, the upper and lower end of fixed cylinder 401 is fixedly connected with corresponding baffle 402 respectively, baffle 402 between rotationally installed have mixing shaft 403, mixing shaft 403 on fixedly installed have corresponding stirring vane 404. In the process of batching, only need to start first constant displacement pump 601 to flow back to the sewage concentration pool 2 with the part supernatant of sedimentation tank 3 is pumped, in this process, water flow forms rotational drive to impeller 8, to drive rotating rod 7 to mixing shaft 403, to form drive to the medicament and water body in fixed cylinder 401, to mix coagulant and configure; after the configuration of coagulant, under the pumping of second constant displacement pump 10, continuously enter into spiral water pipe 9, and form uniform mixing with the alkaline rinsing waste water that continuously flows in spiral water pipe 9, after mixing, the alkaline rinsing waste water and coagulant flush into flocculation reaction pool 1, to further form the water body in flocculation reaction pool 1 to turn over, to further ensure the mixing effect, to ensure the uniform mixing of alkaline rinsing waste water and coagulant.

[0035] Thus can effectively realize the uniform mixing of alkaline rinsing waste water and coagulant without power intervention, and because it does not need to add stirring mechanism, thus can set coagulant mixing mechanism 4 directly in flocculation reaction pool 1, to reduce the overall space occupancy of the utility model.

[0036] The flocculation reaction pool 1 is provided with a concentration meter, and the flocculation reaction pool 1 is fixedly connected with an adjusting pipe 11 bypassing the return pipe 602 connected to the outlet of the first constant displacement pump 601, and the return pipe 602 and the adjusting pipe 11 are respectively fixedly connected with corresponding electromagnetic valves.

[0037] In the mixing process of coagulant mixing, the electromagnetic valve on the return pipe 602 is opened, and the electromagnetic valve on the adjusting pipe 11 is closed; after the coagulant mixing is completed, the electromagnetic valves on the return pipe 602 and the adjusting pipe 11 are closed respectively; in the flocculation reaction process, the concentration of the material in the flocculation reaction pool 1 is detected by the concentration meter, when the solid content in the flocculation reaction pool 1 is too high, the material in the flocculation reaction pool 1 is not easy to discharge to the sedimentation tank 3, at this time, the electromagnetic valve on the adjusting pipe 11 is opened to quantitatively inject the supernatant into the flocculation reaction pool 1 through the adjusting pipe 11, which can more easily discharge the material in the flocculation reaction pool to the sedimentation tank.

[0038] The flocculation reaction pool 1 is fixedly installed with a corresponding mounting seat 12, and the first constant displacement pump 601 is fixedly installed on the mounting seat 12. The rotating rod 7 is connected to one end of the fixed cylinder 401 and is drivingly connected to the bottom of the mixing shaft 403 through gear engagement.

[0039] The water inlet end of the spiral water flowing pipe 9 is connected to the water outlet end of the sewage collecting pool 2 through a corresponding sewage flowing pipe pump 13 and a sewage flowing pipe 14.

[0040] The above only is the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, under the premise of can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A reactor for use in an alkaline rinse wastewater treatment system, characterized by, The utility model relates to a kind of coagulation and flocculation reaction tank and its mixing device, including: Coagulation and flocculation reaction tank (1) is connected to the effluent end of corresponding sewage concentration tank (2), and the discharge end of the coagulation and flocculation reaction tank (1) is connected to corresponding sedimentation tank (3); Coagulant mixing mechanism (4) includes fixed cylinder (401) arranged on the upper portion of coagulation and flocculation reaction tank (1), and the upper and lower ends of the fixed cylinder (401) are respectively fixed with corresponding partition (402), and a corresponding mixing shaft (403) is rotatably installed between the partition (402), and the mixing shaft (403) is fixedly installed with corresponding stirring blade (404); Coagulant adding mechanism (5) includes dosing pipe (501) and dosing water pipe (502) connected in the fixed cylinder (401) between the partition (402), and the dosing pipe (501) and dosing water pipe (502) are respectively connected to external medicament source and tap water source; Mixing drive mechanism (6) includes first dosing pump (601) and reflux pipe (602) for pumping the supernatant of the sedimentation tank (3) to the sewage concentration tank (2), a corresponding rotating rod (7) is transversely rotatably installed on the fixed cylinder (401), one end of the rotating rod (7) not connected to the fixed cylinder (401) is inserted into the reflux pipe (602) and fixedly connected with corresponding impeller (8), and one end of the rotating rod (7) connected to the fixed cylinder (401) is drivingly connected to the mixing shaft (403); Spiral water pipe (9) is coiled on the outside of the fixed cylinder (401), the water inlet end of the spiral water pipe (9) is connected to the effluent end of the sewage concentration tank (2), and the water outlet end of the spiral water pipe (9) is connected to the coagulation and flocculation reaction tank (1), and a second dosing pump (10) for dosing coagulant in the fixed cylinder (401) to the upper side of the spiral water pipe (9) is fixedly connected to the fixed cylinder (401).

2. A reactor for use in an alkaline rinse wastewater treatment system according to claim 1, characterized in that, A concentration meter is arranged in the coagulation and flocculation reaction tank (1), and an adjusting pipe (11) for bypass connection to the reflux pipe (602) at the liquid outlet end of the first dosing pump (601) is fixedly connected to the outside of the coagulation and flocculation reaction tank (1), and the reflux pipe (602) at the liquid outlet end of the first dosing pump (601) and the adjusting pipe (11) are respectively fixedly connected with corresponding solenoid valves.

3. A reactor for use in an alkaline rinse wastewater treatment system according to claim 2, wherein A corresponding mounting seat (12) is fixedly installed on the outside of the coagulation and flocculation reaction tank (1), and the first dosing pump (601) is fixedly installed on the mounting seat (12).

4. A reactor for use in an alkaline rinse wastewater treatment system according to claim 1, wherein One end of the rotating rod (7) connected to the fixed cylinder (401) is drivingly connected to the bottom of the mixing shaft (403) by gear engagement.

5. A reactor for use in an alkaline rinse wastewater treatment system according to claim 1, wherein The water inlet end of the spiral water pipe (9) is connected to the effluent end of the sewage concentration tank (2) through a corresponding waste water flow-through pump (13) and waste water flow-through pipe (14).

6. A reactor for use in an alkaline rinse wastewater treatment system according to claim 1, wherein The stirring blade (404) is fixedly installed on the mixing shaft (403) in a spiral state.

Images