Ultrasonic stripping equipment for treating high-concentration ammonia-nitrogen wastewater

Abstract

The utility model relates to ultrasonic stripping equipment for treating high-concentration ammonia-nitrogen wastewater, which comprises a pipeline group, a treatment barrel, an ultrasonic generator unit, a fan, a first sewage pump, a special treatment agent barrel and a second sewage pump, the first sewage pump, the special treatment agent barrel, the second fan and the second sewage pump are respectively connected into the treatment barrel through a front-end treatment water body inlet pipeline, a treatment agent adding pipeline, a microbubble aeration air supply pipeline and a treatment water body discharge pipeline in the pipeline group; a microbubble aeration pipe is arranged at the bottom of an inner cavity of the treatment barrel, an ultrasonic equipment fixing frame is erected in the middle of the inner cavity to assist a plurality of ultrasonic generating rods of the ultrasonic generator unit in positioning and mounting, and through holes are formed in the top of the treatment barrel for mounting a PH detector, a dissolved oxygen rate detector and a liquid level transmitter. The ammonia nitrogen air stripping device is simple in structure, not only improves the traditional ammonia nitrogen air stripping process through reasonable technical combination, greatly improves the ammonia nitrogen air stripping effect, but also promotes energy consumption saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage and wastewater treatment, and particularly relates to ultrasonic stripping equipment for treating high-concentration ammonia nitrogen wastewater. Background Art

[0002] The commonly used methods for treating high-concentration NH3-N wastewater are nitrification, denitrification and stripping technology. The nitrification and denitrification process uses microorganisms to oxidize NH3-N into nitrates under aerobic conditions, and then reduces it to gaseous nitrogen under anoxic conditions. This process requires a certain amount of organic carbon in the wastewater, and the ratio of organic carbon to nitrogen should be C:N=5:1. However, the carbon-nitrogen ratio in general fertilizer production wastewater is very low and cannot meet the process conditions of nitrification and denitrification. In order to solve this problem, carbon supplementation is needed to increase the carbon-nitrogen ratio. Methanol is often used as a carbon source. This method has two shortcomings. One is that too much carbon supplementation makes it difficult for the treatment system to bear it. The other is that the cost of adding methanol is too high, which significantly increases the cost.

[0003] The process of removing NH3 by the stripping technology is to increase the pH value of the wastewater. Under alkaline conditions, NH3-N in the wastewater is mainly in the form of free NH3, which is discharged into the atmosphere or recycled through stripping. However, the stripping effect of this method is low, and the NH3-N removal rate is generally only 40%-50%, which cannot meet the emission standards. In addition, the amount of air used for stripping is large, resulting in high power consumption and high operating costs.

[0004] In order to overcome the problems existing in the stripping technology and enhance the stripping effect, the utility model combines ultrasonic radiation with air stripping methods to propose a new device for treating high-concentration NH3-N wastewater. Utility Model Content

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] An ultrasonic stripping device for treating high-concentration ammonia nitrogen wastewater comprises a pipeline group, a treatment barrel, an ultrasonic generator unit, a fan, a first sewage pump, a special treatment agent barrel and a second sewage pump, characterized in that the first sewage pump, the special treatment agent barrel, the second fan and the second sewage pump are respectively connected to the treatment barrel through the front-end treatment water body entry pipeline, the treatment agent dosing pipeline, the microbubble aeration air supply pipeline and the treatment water body discharge pipeline in the pipeline group; a microbubble aeration tube is arranged at the bottom of the inner cavity of the treatment barrel, and an ultrasonic equipment fixing frame is mounted in the middle of the inner cavity to assist in positioning and installing multiple ultrasonic generating rods of the ultrasonic generator unit, and a through hole is opened on the top of the treatment barrel for the installation of a pH detector, a dissolved oxygen rate detector and a liquid level transmitter and extending into the inner cavity for detection; the ultrasonic generator unit is electrically connected to the ultrasonic generating rod in the treatment barrel through an ultrasonic equipment connecting cable pipeline.

[0007] Preferably, the dedicated treatment agent barrel is equipped with a first fan and a quantitative dosing pump to assist the work, and the quantitative dosing pump is connected to the treatment agent dosing pipeline connecting the dedicated treatment agent barrel and the treatment barrel, and the outlet of the treatment agent dosing pipeline is arranged in the upper half of the treatment barrel.

[0008] Preferably, one end of the first sewage pump is connected to the front-end treatment water body inlet pipe, and the other end is connected to the water inlet pipe, and the outlet of the front-end treatment water body inlet pipe is arranged in the upper half of the treatment barrel.

[0009] Preferably, the second sewage pump is equipped with an acid- and alkali-resistant electric switching valve to cooperate with the work. The acid- and alkali-resistant electric switching valve is connected to the treated water discharge pipe connecting the second sewage pump to the treatment barrel, and the water inlet of the treated water discharge pipe is connected to the drain outlet at the bottom of the treatment barrel.

[0010] Preferably, the second fan is connected to the microbubble aeration pipe in the treatment barrel through a microbubble aeration air supply pipeline.

[0011] Compared with the prior art, the utility model has the following advantages: the utility model has a simple structure, and through reasonable technical combination, it not only improves the traditional ammonia nitrogen stripping process, greatly improves the effect of ammonia nitrogen stripping, but also promotes energy saving. After the wastewater is irradiated by ultrasonic wave of the utility model, the stripping effect of NH3-N can be significantly increased. Compared with the traditional stripping technology, the removal rate of NH3-N is increased by 17% to 164%, thereby achieving an increase in stripping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0013] 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.

[0014] like Figure 1As shown, the utility model is an ultrasonic stripping device for treating high-concentration ammonia nitrogen wastewater. The main components of the utility model include a pipeline group, a treatment barrel (1), an ultrasonic generator unit (3), a fan, a first sewage pump (10), a special treatment agent barrel (12) and a second sewage pump (19), wherein the pipeline group includes a front-end treatment water inlet pipeline (14), a treatment agent dosing pipeline (15), an ultrasonic equipment connecting cable pipeline (16), a microbubble aeration air supply pipeline (17) and a treatment water discharge pipeline (18), and each device is connected to the components in the treatment barrel (1) through the corresponding pipeline in the pipeline group. Specifically,

[0015] One end of the first sewage pump (10) is connected to a front-end treatment water body inlet pipe (14), and the other end is connected to a water inlet pipe, and the outlet of the front-end treatment water body inlet pipe (14) is arranged at the upper half of the treatment barrel (1);

[0016] The dedicated treatment agent barrel (12) is equipped with a first fan (5) and a quantitative dosing pump (13) to assist in operation. The quantitative dosing pump (13) is connected to a treatment agent dosing pipe (15) connecting the dedicated treatment agent barrel (12) and the treatment barrel (1). The outlet of the treatment agent dosing pipe (15) is arranged at the upper half of the treatment barrel (1).

[0017] The ultrasonic generator unit (3) is electrically connected to the ultrasonic generating rod (2) in the treatment barrel (1) via an ultrasonic equipment connecting cable conduit (16);

[0018] The second fan (20) is connected to the microbubble aeration pipe (4) in the treatment barrel (1) through the microbubble aeration air supply pipeline (17);

[0019] The second sewage pump (19) is equipped with an acid- and alkali-resistant electric switch valve (11) for cooperation. The acid- and alkali-resistant electric switch valve (11) is connected to a treated water body discharge pipe (18) connected to the second sewage pump (19) and the treatment barrel (1). The water inlet of the treated water body discharge pipe (18) is connected to the drain outlet at the bottom of the treatment barrel (1).

[0020] The treatment barrel (1) is provided with a pH detector (7), a dissolved oxygen rate detector (8) and a liquid level transmitter (9) for detecting the internal processing data, and the probes of the three are inserted into the inner cavity of the treatment barrel (1) for operation. It can be further explained that an ultrasonic device fixing frame (6) is mounted in the middle of the inner cavity of the treatment barrel (1) to assist in positioning and installing a plurality of ultrasonic generating rods (2) of the ultrasonic generator unit (3). Such a setting can place the ultrasonic generating rods (2) in the optimal working position, mutual spacing and working efficiency as envisioned, thereby effectively improving the effect, which is equivalent to reducing the working time, and energy consumption can be further saved.

[0021] To ensure that the air stripping process combined with ultrasonic radiation is reasonable and efficient, Figure 1 It can be seen that the outlet of the special treatment agent barrel (12) and the first sewage pump (10) connected to the water inlet pipe need to be arranged at the top of the treatment barrel (1), so that the sewage can be evenly dispersed to the greatest extent based on the sprinkler from top to bottom, so as to be spread out in the treatment barrel (1), thereby being treated by the ultrasonic generating rod (2) located in the treatment barrel (1), and finally being extracted and drained by the second sewage pump (19). The drained sewage will pass through the microbubble aeration pipe (4) before going to the drainage outlet at the bottom of the treatment barrel (1). At this point, the sewage in the treatment barrel (1) will be first treated with the agent, then treated by the ultrasonic generating rod (2), and then blown off by the microbubble aeration pipe (4) from top to bottom based on the gravity extracted by the second sewage pump (19), and finally discharged through the drainage outlet at the bottom of the treatment barrel (1).

[0022] The utility model is a simple and effective method for treating high-concentration NH3-N wastewater by using ultrasonic radiation and stripping technology. The utility model only adds an ultrasonic generator to the traditional stripping device, which can greatly improve the stripping efficiency, reduce the gas supply, save power consumption, and shorten the stripping time, thereby reducing the volume of the stripping tower and reducing investment.

[0023] After testing, the utility model has shown that the removal rate of NH3-N is above 90% through the stripping of high-concentration NH3-N wastewater. The concentration of NH3-N after stripping is within 100 mg / L, which can fully meet the national emission standards. The optimal process conditions are pH=11, ultrasonic stripping time is 40 minutes, and gas-water ratio is 1000:1; the denitrification rate of ultrasonic stripping is 17%-164% higher than that of traditional stripping technology; and the use of ultrasonic stripping technology also has a significant removal effect on CODCr in wastewater, with a specific removal rate of 24.90%-34.76%, which is 21% higher than the removal rate of traditional stripping methods on average.

[0024] Moreover, the NH3 tail gas after stripping can be absorbed by a hydrochloric acid solution to produce a high-concentration NH4Cl solution, which is returned to the production system as a raw material. Therefore, the utility model has significant innovation and practicality, and obtains a better structure and better effect without complicating similar structures.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

Claims

1. An ultrasonic stripping device for treating high-concentration ammonia nitrogen wastewater, comprising a pipeline group, a treatment barrel (1), an ultrasonic generator unit (3), a fan, a first sewage pump (10), a special treatment agent barrel (12) and a second sewage pump (19), characterized in that: The first sewage pump (10), the special treatment agent barrel (12), the second fan (20) and the second sewage pump (19) are connected to the treatment barrel (1) through the front end treatment water inlet pipe (14), the treatment agent dosing pipe (15), the microbubble aeration air supply pipe (17) and the treatment water discharge pipe (18) in the pipe group respectively; a microbubble aeration pipe (4) is arranged at the bottom of the inner cavity of the treatment barrel (1), and an ultrasonic device fixing frame (6) is mounted in the middle of the inner cavity to assist in the positioning and installation of multiple ultrasonic generating rods (2) of the ultrasonic generator unit (3); a through hole is opened on the top of the treatment barrel (1) for the installation of a pH detector (7), a dissolved oxygen rate detector (8) and a liquid level transmitter (9) and extending into the inner cavity for detection; the ultrasonic generator unit (3) is electrically connected to the ultrasonic generating rod (2) in the treatment barrel (1) through an ultrasonic device connecting cable pipe (16).

2. The ultrasonic stripping equipment for treating high-concentration ammonia nitrogen wastewater according to claim 1, characterized in that: The dedicated treatment agent barrel (12) is equipped with a first fan (5) and a quantitative dosing pump (13) to assist in operation. The quantitative dosing pump (13) is connected to a treatment agent dosing pipe (15) connecting the dedicated treatment agent barrel (12) and the treatment barrel (1). The outlet of the treatment agent dosing pipe (15) is arranged at the upper half of the treatment barrel (1).

3. The ultrasonic stripping equipment for treating high-concentration ammonia nitrogen wastewater according to claim 1, characterized in that: One end of the first sewage pump (10) is connected to the front-end treatment water body inlet pipe (14), and the other end is connected to the water inlet pipe. The outlet of the front-end treatment water body inlet pipe (14) is arranged in the upper half of the treatment barrel (1).

4. The ultrasonic stripping equipment for treating high-concentration ammonia nitrogen wastewater according to claim 1, characterized in that: The second sewage pump (19) is equipped with an acid- and alkali-resistant electric switch valve (11) for cooperation. The acid- and alkali-resistant electric switch valve (11) is connected to a treated water body discharge pipe (18) connected to the second sewage pump (19) and the treatment barrel (1). The water inlet of the treated water body discharge pipe (18) is connected to the drain outlet at the bottom of the treatment barrel (1).

5. The ultrasonic stripping equipment for treating high-concentration ammonia nitrogen wastewater according to claim 1, characterized in that: The second fan (20) is connected to the microbubble aeration pipe (4) in the treatment barrel (1) via the microbubble aeration air supply pipeline (17).

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