Pretreatment device for sewage treatment

Abstract

The utility model discloses a pretreatment device for sewage treatment, which comprises a horizontally arranged mixing tank, a water inlet pipe and a chemical inlet pipe are arranged at the upper end of one side of the mixing tank, an aeration pipe group is arranged at the bottom of the other side of the mixing tank, a flow switch is arranged on the water inlet pipe, and a water outlet is formed in the upper side of one end, far away from the water inlet pipe, of the mixing tank. And a mixing conveying piece is arranged in the mixing tank. According to the pretreatment device for sewage treatment, gas can be introduced while sewage is introduced, floating sludge can float on the upper side through tiny bubbles in real time, impurities in the sewage can be conveniently cleaned in time, the gas introduction time is not controlled by the liquid level, it can be guaranteed that data of a back row detection end is relatively stable, and the impurities in the sewage are prevented from exceeding the standard; the sewage treatment effect is good and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a pretreatment device for sewage treatment. Background Art

[0002] Kitchen waste contains a high amount of water and organic matter, which makes it easy to rot and produce a foul odor. After proper treatment and processing, it can be transformed into new resources. The high organic content makes it suitable for use as fertilizer and feed after strict treatment. It can also produce biogas for fuel or power generation, and the oil and fat part can be used to prepare biofuel.

[0003] A large amount of sewage is generated when kitchen waste is treated and processed, so it needs to be treated. At present, flotation machines are mainly used to treat the sewage after kitchen waste treatment. When the flotation machine is working, it usually starts aeration after the liquid level gauge detects that the sewage in the flotation machine reaches a certain height; however, this method of aeration is not timely, and the impurities in the sewage cannot be treated in the first time, resulting in large fluctuations in the data at the rear detection end (that is, the impurities in the sewage are detected to exceed the standard), which reduces the sewage treatment effect and is inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a pretreatment device for sewage treatment, in which gas can be introduced while sewage is introduced, and floating mud can be made to float on the upper side through tiny bubbles in real time, so as to be convenient for timely cleaning of impurities in sewage, and the gas introduction time is not controlled by the liquid level, so that the data of the rear detection end can be guaranteed to be relatively stable, and the impurities in sewage can be avoided from exceeding the standard. The sewage treatment effect is good, the device is easy to use, and the problems in the background technology can be effectively solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pretreatment device for sewage treatment, comprising a horizontally arranged mixing tank, a water inlet pipe and a drug inlet pipe are provided at the upper end of one side of the mixing tank, and an aeration pipe group is provided at the bottom of the other side of the mixing tank, a flow switch is provided on the water inlet pipe, a water outlet is provided on the upper side of one end of the mixing tank away from the water inlet pipe, and a mixing conveying member is provided in the mixing tank.

[0006] As a preferred technical solution of the utility model, the aeration pipe group includes an aeration pipe installed at the bottom of the mixing tank, and an air inlet pipe connected to an external air pump is provided on the side of the aeration pipe.

[0007] As a preferred technical solution of the utility model, the mixing conveying member includes a rotating shaft rotatably arranged in the middle of the mixing tank, and the rotating shaft is provided with spiral blades at both ends of the mixing tank, and when the rotating shaft drives the spiral blades to rotate, the sewage tank outlet is transported.

[0008] As a preferred technical solution of the utility model, the rotating shaft is provided with evenly distributed stirring rods at the middle part of the mixing tank.

[0009] As a preferred technical solution of the utility model, one end of the rotating shaft away from the water outlet passes through and is exposed outside the mixing tank, and a pulley is provided at one end of the rotating shaft located outside the mixing tank.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The pretreatment device for sewage treatment in the example of the utility model can introduce gas while introducing sewage, and can make the floating mud float on the upper side through tiny bubbles in real time, so as to facilitate timely cleaning of impurities in the sewage, and the gas introduction time is not controlled by the liquid level, which can ensure that the data of the rear detection end is relatively stable, avoid exceeding the impurity standard in the sewage, and have good sewage treatment effect and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a right side structural schematic diagram of the utility model.

[0014] In the figure: 1 mixing tank, 2 water inlet pipe, 21 flow switch, 3 medicine inlet pipe, 4 air inlet pipe, 41 aeration pipe, 5 water outlet, 6 rotating shaft, 61 pulley, 7 spiral blade, 8 stirring rod. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2 The utility model provides a technical solution: a pretreatment device for sewage treatment, comprising a horizontally arranged mixing tank 1, a water inlet pipe 2 and a drug inlet pipe 3 are arranged at the upper end of one side of the mixing tank 1, and an aeration pipe group is arranged at the bottom of the other side of the mixing tank 1, a flow switch 21 is arranged on the water inlet pipe 2, a water outlet 5 is opened on the upper side of one end of the mixing tank 1 away from the water inlet pipe 2, and a mixing conveying member is arranged in the mixing tank 1. When the flow switch 21 on the water inlet pipe 2 detects that a certain flow of water enters the mixing tank 1, the flow switch 21 controls the external air pump to work, so that the aeration pipe group aerates the sewage, and tiny bubbles make the floating mud float on the upper side of the sewage, which is convenient for timely cleaning of impurities in the sewage.

[0017] Furthermore, the aeration pipe group includes an aeration pipe 41 installed at the bottom of the mixing tank 1, and an air inlet pipe 4 connected to an external air pump is provided on the side of the aeration pipe 41. The air pump delivers air to the mixing tank 1 through the air inlet pipe 4 and the aeration pipe 41, thereby aerating the sewage, causing tiny bubbles to attach to the flocs and drive the flocs to move upward, and finally allowing the sewage to be discharged into the froth scraper chamber of the flotation machine through the water outlet 5.

[0018] Furthermore, the mixing conveying member includes a rotating shaft 6 rotatably arranged in the middle of the mixing tank 1, and spiral blades 7 are provided at both ends of the rotating shaft 6 inside the mixing tank 1, and when the rotating shaft 6 drives the spiral blades 7 to rotate, the sewage tank outlet 5 is transported.

[0019] Furthermore, a rotating shaft 6 is located in the middle part of the mixing tank 1 and is provided with evenly distributed stirring rods 8. The rotating shaft 6 drives the spiral blades 7 and the stirring rods 8 to rotate. The sewage enters the mixing tank 1 through the water inlet pipe 2, and the flocculant enters the mixing tank 1 through the drug inlet pipe 3. During the rotation of the stirring rods 8, the sewage and the flocculant are mixed and stirred.

[0020] Furthermore, one end of the rotating shaft 6 away from the water outlet passes through and is exposed outside the mixing tank 1, and one end of the rotating shaft 6 located outside the mixing tank 1 is provided with a pulley 61, and the external driving device drives the pulley 61 to rotate through a belt, and the pulley 61 drives the rotating shaft 6 to rotate.

[0021] The flow switch 21 used in the present invention is a common electronic component in the prior art, and its working mode and circuit structure are well-known technologies and are not described in detail here. The flow switch 21 can control the operation of an external air pump to aerate the sewage.

[0022] The flotation machine includes a stirring chamber for stirring sewage and chemicals, an air flotation chamber for suspending impurities to the upper side, and a scraping chamber for scraping impurities on the upper side. The device combines the stirring chamber with the air flotation chamber, so that the discharged sewage can directly enter the scraping chamber and then scrape off the impurities on the upper layer.

[0023] When using:

[0024] The external driving device drives the pulley 61 to rotate through the belt, the pulley 61 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the spiral blade 7 and the stirring rod 8 to rotate;

[0025] The sewage enters the mixing tank 1 through the water inlet pipe 2, and the flocculating agent enters the mixing tank 1 through the agent inlet pipe 3. The sewage and the flocculating agent are mixed and stirred during the rotation of the stirring rod 8;

[0026] The spiral blade 7 is rotating to discharge the water in the direction of the water outlet 5;

[0027] When the flow switch 21 on the water inlet pipe 2 detects that a certain flow of water enters the mixing tank 1, the flow switch 21 controls the operation of the external air pump, and the air pump delivers air to the mixing tank 1 through the air inlet pipe 4 and the aeration pipe 41, thereby aerating the sewage, so that tiny bubbles adhere to the flocculants and drive the flocculants to move upward, and finally the sewage is discharged into the froth scraper chamber of the flotation machine through the water outlet 5.

[0028] The utility model can introduce gas while introducing sewage, and can make floating mud float on the upper side through tiny bubbles in real time, which is convenient for timely cleaning of impurities in sewage. The gas introduction time is not controlled by the liquid level, which can ensure that the data of the rear detection end is relatively stable, avoid exceeding the impurity standard in the sewage, have good sewage treatment effect, and are easy to use.

[0029] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A pretreatment device for sewage treatment, comprising a horizontally arranged mixing tank (1), characterized in that: A water inlet pipe (2) and a drug inlet pipe (3) are provided at the upper end of one side of the mixing tank (1), and an aeration pipe group is provided at the bottom of the other side of the mixing tank (1). A flow switch (21) is provided on the water inlet pipe (2). A water outlet (5) is provided on the upper side of one end of the mixing tank (1) away from the water inlet pipe (2), and a mixing conveying member is provided in the mixing tank (1).

2. The pretreatment device for sewage treatment according to claim 1, characterized in that: The aeration pipe group comprises an aeration pipe (41) installed at the bottom of the mixing tank (1), and an air inlet pipe (4) connected to an external air pump is provided on the side of the aeration pipe (41).

3. The pretreatment device for sewage treatment according to claim 1, characterized in that: The mixing conveying member comprises a rotating shaft (6) rotatably arranged in the middle of the mixing tank (1), and spiral blades (7) are provided at both ends of the rotating shaft (6) inside the mixing tank (1), and when the rotating shaft (6) drives the spiral blades (7) to rotate, the sewage is conveyed in the direction of the sewage tank outlet (5).

4. The pretreatment device for sewage treatment according to claim 3, characterized in that: The rotating shaft (6) is provided with evenly distributed stirring rods (8) at a location in the middle of the mixing tank (1).

5. The sewage treatment pretreatment device according to claim 3, characterized in that: One end of the rotating shaft (6) away from the water outlet passes through and is exposed outside the mixing tank (1), and a pulley (61) is provided at one end of the rotating shaft (6) located outside the mixing tank (1).

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