Water treatment reaction tank

Abstract

The utility model relates to a water treatment reaction tank and belongs to the technical field of water treatment. Comprising a tank body, a stirring shaft, stirring blades, a motor, a sealing cover, a fan, a carbon dioxide gas cylinder and an aeration disc, a stirring shaft is rotationally mounted in the tank body, and stirring blades are arranged on the stirring shaft; a sealing cover covers the top of the tank body, a motor is arranged on the sealing cover, and an output shaft of the motor is connected with the stirring shaft; an aeration disc is arranged at the bottom of the tank body and is connected with a carbon dioxide gas cylinder through a pipeline. The aeration disc is arranged at the bottom of the tank body, so that the size of introduced carbon dioxide bubbles is reduced, the contact area of carbon dioxide gas and sewage is increased, meanwhile, the stirring blades are arranged in the tank body, the carbon dioxide bubbles and the sewage are uniformly mixed, the carbon dioxide gas absorption amount of the sewage is increased, and the sewage treatment efficiency is improved. The sealing cover is arranged above the tank body, so that carbon dioxide gas is effectively prevented from overflowing, the sewage treatment cost is effectively reduced, and the use safety of the tank body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field especially relates to a water treatment reaction tank. BACKGROUND

[0002] In order to improve the utilization rate of water resources, smelting plant will melt the chemical water station concentrated water, dry suction circulating water pool drainage, initial rainwater etc. after centralized treatment and then reuse.

[0003] In the present process flow of treatment, the hardness of wastewater is reduced by soda method, specifically, the raw water is first pumped to the reaction tank for hardness reduction treatment, then CO2 is introduced to promote the precipitation of carbonate in water, then flocculant and coagulant aid are added, and after sufficient reaction, the water is self-flowed to the sedimentation tank for solid-liquid separation, the underflow sludge enters the sludge pool, and the upper water enters the intermediate water tank for next step physical filtration.

[0004] Since the calcium precipitation reaction of CO2 in the reaction tank is reversible, and CO2 gas is directly introduced into the bottom of the reaction tank through a straight pipe, the contact between CO2 and wastewater is not sufficient, resulting in that part of CO2 gas is discharged from the top of the reaction tank without fully reacting with the wastewater, causing the loss of CO2 gas and increasing the cost of wastewater treatment. SUMMARY

[0005] To solve or partially solve the problems in the related art, the utility model provides a water treatment reaction tank, aiming at solving the technical problem of rising wastewater treatment cost caused by incomplete carbon dioxide reaction.

[0006] The water treatment reaction tank comprises a tank body, a stirring shaft, stirring blades, a motor, a sealing cover, a fan, a carbon dioxide cylinder and an aerator;

[0007] The stirring shaft is rotatably installed in the tank body, and the stirring blades are arranged on the stirring shaft; the top of the tank body is covered with the sealing cover, the motor is arranged on the sealing cover, the output shaft of the motor is connected with the stirring shaft, the sealing cover is provided with an air outlet pipe, and the air inlet end of the fan is connected with the air outlet pipe; the bottom of the tank body is provided with the aerator, the aerator is connected with the carbon dioxide cylinder through a pipeline, and the aerator is also connected with the air outlet end of the fan through a pipeline.

[0008] In some schemes, the stirring shaft is provided with a first air guide channel, the stirring blades are provided with a second air guide channel, and the second air guide channel is in communication with the first air guide channel; the stirring blades are uniformly provided with air outlet holes in communication with the second air guide channel;

[0009] The lower end of the stirring shaft is provided with an air slip ring, and the first air guide channel is connected with the carbon dioxide gas cylinder through the air slip ring.

[0010] In some schemes, the lower end of the stirring shaft is connected with the bottom of the tank body through a bearing.

[0011] The inner top of the tank body is provided with a mounting frame, and the upper end of the stirring shaft is connected with the mounting frame through a bearing.

[0012] In some schemes, the output shaft of the motor is connected with the upper end of the stirring shaft through a key.

[0013] In some schemes, a one-way valve is arranged on the connecting pipeline of the aerator and the fan.

[0014] The technical scheme provided by the utility model can have the following beneficial effects:

[0015] The utility model discloses a water treatment reaction tank, which comprises a tank body, a stirring shaft, a motor, a fan, a carbon dioxide gas cylinder and an aerator.

[0016] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the utility model will become more apparent from the following detailed description of exemplary embodiments of the utility model, taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views.

[0018] Figure 1 is a structure schematic view of the water treatment reaction tank shown in the utility model embodiment;

[0019] Figure 2 is another structure schematic view of the water treatment reaction tank shown in the utility model embodiment;

[0020] Reference signs:

[0021] 1, tank body; 2, stirring shaft; 21, first air guide channel; 3, stirring blade; 31, second air guide channel; 32, air outlet hole; 4, motor; 5, sealing cover; 6, fan; 7, carbon dioxide gas cylinder; 8, aerator; 9, air slip ring; 10, mounting frame. DETAILED DESCRIPTION

[0022] The utility model will be described in further detail below in connection with the drawings and specific embodiments, but the protection scope of the utility model is not limited to the content.

[0023] Please refer to Figure 1 The application provides a kind of water treatment reaction tank, including tank body 1, stirring shaft 2, stirring vane 3, motor 4, sealing cover 5, fan 6, carbon dioxide gas cylinder 7, aerator 8.

[0024] The tank body 1 is cylindrical, and the stirring shaft 2 is rotatably installed in the tank body 1, the stirring shaft 2 is provided with the stirring vane 3, the stirring vane 3 is provided with two groups, each group of stirring vane 3 has two pieces, and is symmetrically arranged about the stirring shaft 2, which is beneficial to improve the stress uniformity of the stirring shaft 2, the two groups of stirring vane 3 are arranged at different heights to realize stirring of sewage at different heights;A sealing cover 5 is arranged on the top of the tank body 1, so that a closed cavity is formed in the tank body 1;The motor 4 is arranged on the sealing cover 5, the output shaft of the motor 4 is connected with the stirring shaft 2, the sealing cover 5 is provided with a gas outlet pipe, and the gas outlet pipe is connected with the air inlet end of the fan 6;The bottom of the tank body 1 is provided with an aerator 8, and the aerator 8 is connected with the carbon dioxide gas cylinder 7 through a pipeline;The aerator 8 is also connected with the air outlet end of the fan 6 through a pipeline.

[0025] When working, the carbon dioxide gas in the carbon dioxide gas cylinder 7 is introduced into the aerator 8 through the pipeline, the carbon dioxide gas is dispersed into fine bubbles through the aerator 8, and then introduced into the sewage, so as to increase the contact area of the carbon dioxide gas and the sewage, thereby improving the occurrence of calcification reaction;At the same time, the motor 4 is energized to work, the stirring vane 3 is driven to rotate in the tank body 1 by the stirring shaft 2, so as to uniformly stir the carbon dioxide gas and the sewage, at the same time, the rotating stirring vane 3 breaks the bubbles, further improving the occurrence of calcification reaction;Finally, the unreacted carbon dioxide gas overflows the sewage upwards, then flows upwards, and then is introduced into the aerator 8 again by the fan 6, which effectively avoids the overflow of carbon dioxide gas, ensures the safety of employees, effectively ensures that all carbon dioxide gas can react with the substances in the sewage, and effectively reduces the treatment cost of sewage treatment.

[0026] In some specific embodiments, as Figure 2 shown, the stirring shaft 2 is provided with a first gas guide channel 21, the stirring vane 3 is provided with a second gas guide channel 31, and the second gas guide channel 31 is communicated with the first gas guide channel 21;The stirring vane 3 is uniformly provided with a gas outlet hole 32 communicated with the second gas guide channel 31;The lower end of the stirring shaft 2 is provided with a gas slip ring 9, and the first gas guide channel 21 is connected with the carbon dioxide gas cylinder 7 through the gas slip ring 9.

[0027] In operation, part of the carbon dioxide gas is led out from the carbon dioxide gas cylinder 7, and then is led into the sewage through the gas pipe, the gas slip ring 9, the second gas guiding channel 31, the first gas guiding channel 21 and the gas outlet hole 32 in sequence, the carbon dioxide gas is guided through multiple points, so that the guided carbon dioxide bubbles are more uniformly distributed in the reaction tank, and thus the carbonates in the sewage can be fully contacted with the carbon dioxide, and the quality of the sewage treatment is improved.

[0028] Preferably, the gas outlet hole 32 is located on the side away from the rotating direction of the stirring blade 3, which is beneficial to the outflow of the carbon dioxide gas, and meanwhile, the vortex formed on the side of the gas outlet hole 32 when the stirring blade 3 rotates can impact and tear the carbon dioxide bubbles, which is beneficial to the full reaction of the carbonates in the sewage with the carbon dioxide.

[0029] In some specific embodiments, the lower end of the stirring shaft 2 is connected with the bottom of the tank body 1 through a bearing, so as to form the limiting and supporting of the lower end of the stirring shaft 2, the inner top of the tank body 1 is provided with a mounting frame 10, and the upper end of the stirring shaft 2 is connected with the mounting frame 10 through a bearing, so as to form the limiting and supporting of the upper end of the stirring shaft 2, thus the coaxiality of the rotation of the stirring shaft 2 is improved, and thus the vibration of the stirring shaft 2 in rotation is reduced, and the stirring shaft 2 rotates more stably.

[0030] In some specific embodiments, the output shaft of the motor 4 is connected with the upper end of the stirring shaft 2 through a key, which is convenient for the installation and dismounting of the motor 4.

[0031] In some specific embodiments, a one-way valve is arranged on the connecting pipeline of the aerator 8 and the fan 6.

[0032] The above has described the embodiments of the present application, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A water treatment reaction tank characterized by: Including groove body (1), stirring shaft (2), stirring blade (3), motor (4), sealing cover (5), fan (6), carbon dioxide cylinder (7), aeration disc (8); Rotary installation has stirring shaft (2) in groove body (1), be equipped with stirring blade (3) on stirring shaft (2), the top cover of groove body (1) is equipped with sealing cover (5), be equipped with motor (4) on sealing cover (5), the output shaft of motor (4) is connected with stirring shaft (2), be equipped with gas outlet pipe on sealing cover (5), the gas inlet end of fan (6) is connected with gas outlet pipe, the bottom of groove body (1) is equipped with aeration disc (8), the aeration disc (8) is connected with carbon dioxide cylinder (7) through pipeline, the aeration disc (8) is still connected with the gas outlet end of fan (6) through pipeline.

2. The water treatment reaction tank of claim 1, wherein: a first gas guide channel (21) is arranged in the stirring shaft (2), a second gas guide channel (31) is arranged in the stirring blade (3), and the second gas guide channel (31) is in communication with the first gas guide channel (21); the stirring blade (3) is uniformly provided with gas outlet holes (32) in communication with the second gas guide channel (31); a gas slip ring (9) is arranged at the lower end of the stirring shaft (2), and the first gas guide channel (21) is connected with the carbon dioxide cylinder (7) through the gas slip ring (9).

3. The water treatment reaction tank of claim 1, wherein: the lower end of the stirring shaft (2) is connected with the bottom of the groove body (1) through a bearing; an installation frame (10) is arranged at the inner top of the groove body (1), and the upper end of the stirring shaft (2) is connected with the installation frame (10) through a bearing.

4. The water treatment reaction tank of claim 1, wherein: the output shaft of the motor (4) is connected with the upper end of the stirring shaft (2) through a key.

5. The water treatment reaction tank of claim 1, wherein: a one-way valve is arranged on the connecting pipeline between the aeration disc (8) and the fan (6).

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