Ammonia nitrogen wastewater collection and treatment equipment

Abstract

This utility model discloses an ammonia nitrogen wastewater collection and treatment device, belonging to the technical field of wastewater treatment equipment. It includes a collection tank, with an inlet pipe for a booster pump extending from the top of the collection tank. The outlet of the booster pump is connected to the inlet pipe of a mixer. The outlet pipe of the mixer is connected to one side inlet of a heat exchanger, and the outlet pipe of the heat exchanger is connected to the inlet of a deammoniation tower. A pipe connects the top steam pipe of the deammoniation tower to the steam inlet of a condenser, and a pipe connects the bottom pipe of the condenser to the liquid inlet of a gas-liquid separator. By incorporating multiple treatment devices, the ammonia nitrogen wastewater undergoes steps such as alkali replenishment, stripping deammoniation, steam distillation, and condensation. The ammonia water is collected and stored in an ammonia water storage tank, while the residual tail gas is treated and purified by an ammonia scrubber and a line purification tower, achieving highly efficient treatment and recovery of ammonia nitrogen wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to an ammonia nitrogen wastewater collection and treatment device. Background Technology

[0002] Wastewater treatment utilizes physical, chemical, and biological methods to purify wastewater, reduce pollution, and ultimately achieve wastewater recycling and reuse, fully utilizing water resources. Domestic sewage refers to wastewater discharged during daily life activities. This wastewater is mainly polluted by household waste and human excrement. The quantity, composition, and concentration of pollutants are related to people's living habits and water consumption. Domestic sewage generally does not contain toxic substances; however, it provides suitable conditions for microbial reproduction and contains a large number of bacteria and pathogens, posing a certain degree of harm from a hygiene perspective.

[0003] Ammonia nitrogen wastewater treatment device, patent number CN201720605406.1. The device includes an ammonia nitrogen wastewater stripping tank, a solar collector, a flowable heat transfer medium, and a pipeline for supplying the flowable heat transfer medium; the ammonia nitrogen wastewater stripping tank is connected to the solar collector via the pipeline. The entire device is lightweight, simple in structure, occupies little space, and is easy to install; the collector can rotate with the platform, greatly improving the utilization rate of solar energy.

[0004] Existing ammonia nitrogen wastewater treatment equipment has a simple structure. After the ammonia nitrogen wastewater enters the treatment equipment, the simple ammonia nitrogen wastewater treatment equipment cannot effectively recover and purify the ammonia nitrogen wastewater. Therefore, we propose an ammonia nitrogen wastewater collection and treatment equipment. Utility Model Content

[0005] This utility model provides an ammonia nitrogen wastewater collection and treatment device. By setting up multiple treatment devices, the ammonia nitrogen wastewater undergoes steps such as alkali replenishment, stripping to remove ammonia, steam distillation and condensation. The ammonia water is then collected and stored in an ammonia water storage tank, while the residual tail gas is treated and purified by an ammonia scrubber and a line purification tower, thus achieving high-efficiency treatment and recovery of ammonia nitrogen wastewater.

[0006] The specific technical solution provided by this utility model is as follows:

[0007] This utility model provides an ammonia nitrogen wastewater collection and treatment device, including a collection tank. A booster pump inlet pipe extends from the top of the collection tank, and the booster pump outlet is connected to the inlet pipe of a mixer. The mixer outlet pipe is connected to one side inlet of a heat exchanger, and the other side outlet of the heat exchanger is connected to the inlet of an ammonia removal tower. A pipe connects the top steam inlet of the ammonia removal tower to the condenser steam inlet, and a pipe connects the bottom pipe of the condenser to the liquid inlet pipe of a gas-liquid separator. The gas-liquid separator outlet pipe is connected to... The reflux pump inlets are interconnected by pipes, and the reflux pump outlet is interconnected with the ammonia removal tower by pipes. The top gas port of the condenser extends into the vacuum pump's extraction pipe, and the vacuum pump's outlet pipe is interconnected with the ammonia recovery device's inlet. The top pipe of the ammonia recovery device is interconnected with the ammonia scrubber's inlet pipe, and the ammonia scrubber's outlet pipe is interconnected with the ammonia scrubbing purification tower by pipes. The outlet of the ammonia scrubbing purification tower is interconnected with a water pump, and the water pump's outlet pipe extends into a water collection tank. The bottom pipe of the ammonia scrubber is interconnected with an ammonia storage tank.

[0008] Optionally, the bottom of the booster pump and the heat exchanger are connected to a base plate.

[0009] Optionally, the metal outer walls of the ammonia removal tower and the ammonia washing purification tower are coated with a metal protective paint.

[0010] The beneficial effects of this utility model are as follows:

[0011] This invention utilizes multiple treatment devices. Ammonia nitrogen wastewater is collected in a collection tank, homogenized, and then pumped into a mixer for alkali replenishment and pH adjustment. The wastewater is then fed into a heat exchanger, where high-temperature water discharged from the deammoniation tower serves as a heat source to preheat the wastewater. After preheating, the wastewater enters the upper part of the deammoniation tower and moves downwards. Low-pressure steam from outside the tower enters the bottom of the negative pressure stripping deammoniation tower and moves upwards within the tower. The high-temperature water undergoes layer-by-layer boiling and jetting to remove ammonia under the action of the tower plates. At this point, the effluent from the bottom of the deammoniation tower meets or exceeds the process standards. After the required ammonia vapor is stripped and distilled, it enters the condenser for condensation. The ammonia-containing condensate is then separated by a gas-liquid separator and pumped back to the ammonia removal tower by a reflux pump. The ammonia gas separated by the gas-liquid separator is pumped into the ammonia recovery unit by a vacuum pump to recover the ammonia water. The ammonia water is collected and discharged into the ammonia water storage tank for storage. The tail gas overflowing from the ammonia recovery unit enters the ammonia scrubber and is then sent to the ammonia washing and purification tower for washing and purification with clean water. After reaching the required ammonia water concentration, the deammoniated water is pumped into the collection tank by the effluent pump. This solves the problem of the existing ammonia nitrogen wastewater treatment equipment having a simple structure and poor treatment capacity. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of an ammonia nitrogen wastewater collection and treatment device according to an embodiment of the present invention.

[0014] In the diagram: 1. Water collection tank; 2. Booster pump; 3. Mixer; 4. Heat exchanger; 5. Ammonia removal tower; 6. Condenser; 7. Reflux pump; 8. Gas-liquid separator; 9. Ammonia recovery device; 10. Ammonia scrubber; 11. Vacuum pump; 12. Ammonia water storage tank; 13. Ammonia scrubbing purification tower; 14. Water outlet pump. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] The following will combine Figure 1 A detailed description of an ammonia nitrogen wastewater collection and treatment device according to an embodiment of this utility model is provided.

[0017] refer to Figure 1As shown in the figure, an ammonia nitrogen wastewater collection and treatment device provided by this utility model includes a collection tank 1. The top of the collection tank 1 has an inlet pipe for a lift pump 2, and the outlet of the lift pump 2 is connected to the inlet pipe of a mixer 3. The outlet pipe of the mixer 3 is connected to one side inlet of a heat exchanger 4, and the other side outlet of the heat exchanger 4 is connected to the inlet of an ammonia removal tower 5. A pipe connects the top steam inlet of the ammonia removal tower 5 to the steam inlet of a condenser 6, and a pipe connects the bottom pipe of the condenser 6 to the liquid inlet pipe of a gas-liquid separator 8. The outlet pipe of the gas-liquid separator 8 is connected to a reflux pump 7. The inlets are interconnected by pipes, and the outlet of the reflux pump 7 is interconnected with the ammonia removal tower 5 by pipes. The top gas port of the condenser 6 extends into the suction pipe of the vacuum pump 11, and the outlet pipe of the vacuum pump 11 is interconnected with the inlet of the ammonia recovery device 9. The top pipe of the ammonia recovery device 9 is interconnected with the inlet pipe of the ammonia scrubber 10, and the outlet pipe of the ammonia scrubber 10 is interconnected with the ammonia scrubbing purification tower 13 by pipes. The outlet of the ammonia scrubbing purification tower 13 is interconnected with the outlet pipe of the water pump 14, and the outlet pipe of the water pump 14 extends into the water collection tank 1. The bottom pipe of the ammonia scrubber 10 is interconnected with the ammonia water storage tank 12.

[0018] For example, by setting up multiple treatment devices, ammonia nitrogen wastewater is collected in a collection tank 1, homogenized, and then sent to a mixer 3 via a booster pump 2 for alkali replenishment and pH adjustment. The ammonia nitrogen wastewater is then sent to a heat exchanger 4, where high-temperature water discharged from a deammoniation tower 5 serves as a heat source to preheat the ammonia nitrogen wastewater in the heat exchanger 4. After preheating, the wastewater enters the upper part of the deammoniation tower 5 and then moves downwards within it. Low-pressure steam from outside the system enters the bottom of the negative pressure stripping deammoniation tower 5 and moves upwards within the tower. High-temperature water, under the action of the tower plates in the deammoniation tower 5, undergoes layer-by-layer boiling and jet deammoniation. At this time, the deammoniation tower 5... After the water at the bottom of the tower reaches or exceeds the process requirements, the ammonia vapor volatilized from the stripping is distilled and then condensed in the condenser 6. The ammonia-containing condensate is generated and then pumped back to the deammoniation tower 5 by the reflux pump 7 after passing through the gas-liquid separator 8. The ammonia gas separated by the gas-liquid separator is pumped into the ammonia recovery device 9 by the vacuum pump 11 to recover the ammonia water. The ammonia water is collected and discharged into the ammonia water storage tank 12 for storage. The tail gas overflowing from the ammonia recovery device 9 enters the ammonia scrubber 10 and is then sent to the ammonia washing and purification tower 13 for washing and purification with clean water. After reaching the required ammonia water concentration, the deammoniation water is pumped into the water collection tank 1 by the water pump 14.

[0019] refer to Figure 1 As shown, the bottom of the booster pump 2 and the heat exchanger 4 are connected to a base plate.

[0020] For example, the base plate is supported by contacting the ground at the bottom of the booster pump 2 and the heat exchanger 4.

[0021] refer to Figure 1As shown, the metal outer walls of the ammonia removal tower 5 and the ammonia washing and purification tower 13 are coated with metal protective paint.

[0022] For example, a metal protective paint forms a rust-proof protective layer on the metal surfaces of the ammonia removal tower 5 and the ammonia washing and purification tower 13 to prevent the tower bodies from being corroded and rusted by the environment.

[0023] This utility model relates to an ammonia nitrogen wastewater collection and treatment device. It comprises multiple treatment units. Ammonia nitrogen wastewater is collected in a collection tank 1, homogenized, and then pumped by a booster pump 2 to a mixer 3 for alkali replenishment and pH adjustment. The wastewater is then fed into a heat exchanger 4. High-temperature water discharged from a deammoniation tower 5 serves as a heat source to preheat the ammonia nitrogen wastewater in the heat exchanger 4. After preheating, the wastewater enters the upper part of the deammoniation tower 5 and moves downwards within it. Low-pressure steam from outside the system enters the bottom of the negative pressure stripping deammoniation tower 5 and moves upwards within the tower. High-temperature water, under the action of the tower plates in the deammoniation tower 5, undergoes layer-by-layer boiling and jetting to remove the ammonia nitrogen. Ammonia is removed from the ammonia stripping tower 5. After the water at the bottom of the tower reaches or exceeds the process requirements, the ammonia vapor volatilized from the stripping is distilled and then condensed in the condenser 6. The ammonia-containing condensate is generated and then pumped back to the ammonia stripping tower 5 by the reflux pump 7 after passing through the gas-liquid separator 8. The ammonia gas separated by the gas-liquid separator is pumped into the ammonia recovery device 9 by the vacuum pump 11 to recover the ammonia water. The ammonia water is collected and discharged into the ammonia water storage tank 12 for storage. The tail gas overflowing from the ammonia recovery device 9 enters the ammonia scrubber 10 and is then sent to the ammonia washing and purification tower 13 for washing and purification with clean water. After reaching the required ammonia water concentration, the deammoniated water is pumped into the water collection tank 1 by the water pump 14.

[0024] It should be noted that this utility model is an ammonia nitrogen wastewater collection and treatment device, including a water collection tank 1, a booster pump 2, a mixer 3, a heat exchanger 4, an ammonia removal tower 5, a condenser 6, a reflux pump 7, a gas-liquid separator 8, an ammonia recovery device 9, an ammonia scrubber 10, a vacuum pump 11, an ammonia water storage tank 12, an ammonia scrubbing and purification tower 13, and an outlet pump 14. All components are general standard parts or parts known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0025] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. An ammonia-nitrogen wastewater collecting and treating apparatus comprising a water collecting pool (1), characterized in that: The top of the water collection tank (1) is connected to the inlet pipe of the booster pump (2), and the outlet of the booster pump (2) is connected to the inlet pipe of the mixer (3). The outlet pipe of the mixer (3) is connected to the inlet of one side of the heat exchanger (4), and the outlet pipe of the heat exchanger (4) is connected to the inlet of the deammoniation tower (5). The top steam pipe of the deammoniation tower (5) is connected to the steam inlet of the condenser (6), and the bottom pipe of the condenser (6) is connected to the liquid inlet of the gas-liquid separator (8). The outlet pipe of the gas-liquid separator (8) is connected to the inlet of the reflux pump (7), and the reflux pump (7) is connected to the inlet of the reflux pump (7). The outlet of the condenser (6) is connected to the deammoniation tower (5) by a pipe. The top gas port of the condenser (6) extends into the suction pipe of the vacuum pump (11), and the outlet pipe of the vacuum pump (11) is connected to the inlet of the ammonia recovery device (9). The top pipe of the ammonia recovery device (9) is connected to the inlet pipe of the ammonia scrubber (10), and the outlet pipe of the ammonia scrubber (10) is connected to the ammonia scrubbing purification tower (13). The outlet of the ammonia scrubbing purification tower (13) is connected to the outlet pipe of the water pump (14), and the outlet pipe of the water pump (14) extends into the water collection tank (1). The bottom pipe of the ammonia scrubber (10) is connected to the ammonia water storage tank (12).

2. The ammonia-nitrogen wastewater collecting and treating apparatus according to claim 1, characterized in that: The bottom of the booster pump (2) and the heat exchanger (4) are connected to a base plate.

3. The ammonia-nitrogen wastewater collecting and processing apparatus according to claim 1, characterized in that: The metal outer walls of the ammonia removal tower (5) and the ammonia washing and purification tower (13) are coated with metal protective paint.

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