Incineration wet-process high-salinity wastewater recycling system
By installing siphon and filter components between the wet deacidification tower and the high-salt wastewater treatment tank, combined with buffer tank and flow regulating components, and using salt inhibitors and mixing components, the problems of high energy consumption and equipment blockage in high-salt wastewater treatment are solved, achieving efficient wastewater reuse and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 福建兴业东江环保科技有限公司
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-08
AI Technical Summary
The treatment of high-salt wastewater generated during the existing hazardous waste incineration process is costly and involves increased energy consumption and liquid backflow, which affects equipment use.
A siphon and filter are installed between the wet deacidification tower and the high-salt wastewater treatment tank. Combined with a buffer tank and flow regulator, salt inhibitors and mixing devices are used to pretreat the high-salt wastewater through siphon action, regulate pipeline pressure and flow, and prevent salt scaling and blockage.
It reduces energy consumption and equipment load in the treatment of high-salt wastewater, reduces the use of fresh water, avoids equipment blockage, and ensures the normal operation of the incinerator.
Smart Images
Figure CN224212428U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater reuse technology, specifically to a wet incineration high-salt wastewater reuse system. Background Technology
[0002] With rapid economic development, the generation of hazardous waste has increased dramatically. Given its potential environmental risks and threats to human health, hazardous waste has become one of the major environmental problems we face today. Incineration can effectively destroy toxic and harmful organic waste in hazardous waste, reduce its volume and mass, and facilitate its safe final disposal. It is the fastest and most effective technology for achieving the reduction, harmlessness, and resource recovery of hazardous waste.
[0003] Wet acid removal technology is commonly used for flue gas purification in hazardous waste incineration, resulting in the generation of large amounts of high-salinity wastewater during the incineration process. High-salinity wastewater refers to wastewater with a total salt content ≥1%, primarily including industrial high-salinity wastewater, saline domestic sewage, and other saline wastewater. This type of high-salinity wastewater contains a large amount of dissolved inorganic salts, such as Cl-. - SO4 2- Na + Ca 2+ Plasma, along with the presence of certain organic pollutants in the water, makes the treatment of such wastewater very costly. To address this, patent number CN215798985U describes a high-salt wastewater reuse system for hazardous waste incineration. Through the combined action of a filter, conductivity adjustment mechanism, and salt inhibitor addition mechanism, the wastewater hardly precipitates or adheres to the surface of the quenching spray tower. Salt exists in powder or small particle form, effectively avoiding scaling and clogging problems caused by salt precipitation in the quenching spray tower, saving wastewater treatment costs and reducing the use of fresh water. However, this system has the following problems: 1. Transferring high-salt wastewater using a wastewater lift pump increases energy consumption; 2. The connection between the quenching spray tower and the wastewater pump and metering pump is only through pipes, which can easily cause backflow of liquid under the action of high-temperature flue gas, thus affecting the operation of the wastewater pump and metering pump. Utility Model Content
[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art and to provide a wet high-salt wastewater incineration and reuse system.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A wet high-salt wastewater incineration and reuse system includes a wet desulfurization tower and a high-salt wastewater treatment tank. A siphon component is installed between the wet desulfurization tower and the high-salt wastewater treatment tank to connect them. A filter component is connected to the siphon component. The air outlet of the high-salt wastewater treatment tank is connected to a buffer tank. The water outlet of the buffer tank is connected to a flow regulating component. The water outlet of the flow regulating component is connected to a quench spray tower. The air inlet of the quench spray tower is connected to the air outlet of the wet desulfurization tower and the buffer tank through a pipeline.
[0006] Furthermore, the siphon component includes a siphon tube, one end of which is connected to the filter component. The filter component includes a housing, inside which a filter is provided, and on the surface of the housing are a plurality of filter holes that match the filter.
[0007] Furthermore, the housing includes an upper housing and a lower housing that matches the upper housing, the upper housing and the lower housing forming a sphere together.
[0008] Furthermore, the upper shell and the lower shell are detachably connected to each other, and a magnetic attraction element is provided between the upper shell and the lower shell. The magnetic attraction element includes a magnet and an iron block respectively disposed on the upper shell and the lower shell.
[0009] Furthermore, it also includes a snap-fit component, which is a limiting ring. One side of the limiting ring is fixedly connected to the inner wall of the wet deacidification tower, and the siphon pipe passes through the limiting ring and is connected to the upper shell.
[0010] Furthermore, the flow regulating component includes a pump connected to the outlet of the high-salt wastewater treatment tank, the output of the pump being connected to a nozzle and a return pipe connected to a buffer tank, and the nozzle being located inside the quench spray tower.
[0011] Furthermore, the outlet of the buffer tank is connected to the inlet of the pump.
[0012] Furthermore, it also includes a salt inhibitor additive installed on the high-salt wastewater treatment tank. The salt inhibitor additive includes a salt inhibitor storage tank, and a discharge pipe is installed at the discharge end of the salt inhibitor storage tank. A control valve for controlling the amount of salt inhibitor added is installed on the discharge pipe.
[0013] Furthermore, it also includes a mixing element installed inside the high-salinity wastewater treatment tank. The mixing element includes a motor installed on the high-salinity wastewater treatment tank. The output end of the motor is provided with a rotating shaft. A first stirring rod, a second stirring rod, a third stirring rod, and a fourth stirring rod are installed on the rotating shaft. The first stirring rod and the second stirring rod are arranged to pass through the top and bottom of the rotating shaft. The third stirring rod and the fourth stirring rod are located on the same side of the rotating shaft.
[0014] Furthermore, a first spiral blade is connected to the end of both the first and second stirring rods; a second spiral blade is connected to the second, third, and fourth stirring rods, and the second spiral blade is located inside the first spiral blade.
[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0016] 1. This application achieves pretreatment of most suspended solids and some salt particles in high-salt wastewater by installing a siphon component between a wet deacidification tower and a high-salt wastewater treatment tank to connect them. The siphon component is connected to a filter element, thereby reducing pipeline resistance and downstream scaling problems. Furthermore, the use of the siphon component can effectively reduce the use of pumps and lower production costs.
[0017] 2. This application connects a buffer tank to the air outlet of the high-salt wastewater treatment tank, and a flow regulator is connected to the water outlet of the buffer tank. The water outlet of the flow regulator is connected to a quench spray tower, and the air inlet of the quench spray tower is connected to the air outlet of the wet deacidification tower and the buffer tank through a pipeline. This allows for the adjustment of pipeline pressure and flow rate, reducing the load on the high-salt wastewater treatment tank and the spray nozzles, and preventing wastewater backflow.
[0018] 3. This application, by installing salt inhibitor additives and mixing components on the high-salt wastewater treatment tank, can disrupt the formation of salt particles, ensuring that the wastewater hardly settles or adheres to the surface of the quench spray tower. The salt exists in powder or small particle form, falling off along with the ash and entering the ash collection hopper at the bottom of the quench spray tower. This improves the cleanliness of the quench spray tower surface, effectively preventing scaling and clogging caused by salt precipitation in the quench spray tower, saving wastewater treatment costs, reducing fresh water usage, and without affecting the normal operation of the incinerator. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the wet high-salt wastewater incineration reuse system in a preferred embodiment of the present invention;
[0020] Figure 2 This is a schematic diagram of the filter element in a preferred embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the mixing component in a preferred embodiment of the present invention.
[0022] Reference numerals: 1. Wet deacidification tower; 2. High-salt wastewater treatment tank; 3. Buffer tank; 4. Siphon component; 5. Filter component; 501. Shell; 501a. Upper shell; 501b. Lower shell; 502. Filter; 503. Filter hole; 6. Salt inhibitor additive; 7. Mixing component; 701. Motor; 702. Rotating shaft; 703. First stirring rod; 704. Second stirring rod; 705. Third stirring rod; 706. Fourth stirring rod; 707. First spiral blade; 708. Second spiral blade; 8. Quenching spray tower; 9. Snap-fit component; 10. Liquid pump; 11. Spray head; 12. Return pipe. Detailed Implementation
[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.
[0024] Reference Figures 1-3 As shown in the preferred embodiment of this utility model, a wet high-salt wastewater reuse system includes a wet desulfurization tower 1 and a high-salt wastewater treatment tank 2. A siphon 4 is installed between the wet desulfurization tower 1 and the high-salt wastewater treatment tank 2 to connect them. A filter element 5 is connected to the siphon 4, thereby achieving pretreatment of most suspended solids and some salt particles separated from the high-salt wastewater, reducing pipeline resistance and downstream scaling problems. The siphon 4 can also effectively reduce the use of pumps and lower production costs. The air outlet of the high-salt wastewater treatment tank 2 is connected to a buffer tank 3. The water outlet of the buffer tank 3 is connected to a flow regulator. The water outlet of the flow regulator is connected to a quench spray tower 8. The air inlet of the quench spray tower 8 is connected to the air outlet of the wet desulfurization tower 1 and the buffer tank 3 through a pipeline, thereby adjusting the pipeline pressure and flow rate, reducing the load on the high-salt wastewater treatment tank and the spray head, and preventing wastewater backflow.
[0025] As a preferred embodiment of this utility model, it may also have the following additional technical features: the siphon component 4 includes a siphon tube, one end of which is connected to the filter component 5. The filter component 5 includes a housing 501, and a filter 502 is provided inside the housing 501. In practical applications, this filter can be a filter screen tightly attached to the filter holes on the housing, removing most of the suspended matter and some of the precipitated salt particles. The connection between the filter screen and the filter holes can be achieved by existing adhesive bonding or other methods, which will not be described in detail in this embodiment; the housing includes an upper housing 501a and the upper housing... The upper shell 501a is matched with the lower shell 501b. The upper shell 501a and the lower shell 501b form a sphere with each other, and the surface of the shell 5 is provided with a plurality of filter holes 503. The upper shell 501a and the lower shell 501b are detachably connected to each other. A magnetic attraction element is provided between the upper shell 501a and the lower shell 501b. The magnetic attraction element includes a magnet and an iron block respectively provided on the upper shell 501a and the lower shell 501b, so as to facilitate cleaning of the filter element 5. A switch valve is installed on the siphon tube so as to discharge high-salt wastewater according to actual needs.
[0026] In practical applications, the siphon requires a certain amount of gas to pressurize the system, allowing the high-salt wastewater in the wet desulfurization tower 1 to flow into the high-salt wastewater treatment tank 2 via siphon action. After flowing into the high-salt wastewater treatment tank 2, the gas is discharged into the buffer tank 3 through the exhaust pipe of the high-salt wastewater treatment tank 2, and then discharged into the quench spray tower 8 through the buffer tank 3, thereby achieving pressure regulation of the system and preventing the gas from impacting and damaging the liquid pump. At the same time, when the high-salt wastewater in the high-salt wastewater treatment tank 2 is mixed with the salt inhibitor, some of the gas loaded in the high-salt wastewater will also be generated. After being released, the gas flows into the buffer tank 3 and is then discharged into the quench spray tower 8 for discharge.
[0027] In this embodiment, a snap-fit component 9 is also included. The snap-fit component 9 is a limiting ring. One side of the limiting ring is fixedly connected to the inner wall of the wet deacidification tower 1. The siphon tube passes through the limiting ring and is connected to the upper shell 501a. Because the diameter of the limiting ring is smaller than the diameter of the filter element shell 501, it is convenient to fix the liquid inlet end of the siphon tube. At the same time, in practical applications, the siphon tube is threadedly connected to the upper shell 501a, which facilitates the disassembly, assembly, and cleaning of the filter element 5.
[0028] In this embodiment, the flow regulating component includes a pump 10 connected to the outlet of the high-salt wastewater treatment tank 2. The output end of the pump 10 is connected to a nozzle 11 and a return pipe 12 connected to the buffer tank 3. The nozzle 11 is located inside the quench spray tower 8 to achieve cooling treatment of high-temperature flue gas. In practical applications, the bottom of the quench spray tower 8 is also equipped with an ash collection hopper, and the return pipe 12 is equipped with a valve for controlling the return of wastewater. The valve is opened and closed according to actual needs. If the water pressure in the pipeline is too high, the valve on the return pipe is opened to allow the wastewater to return to the buffer tank 3; otherwise, the valve is closed.
[0029] In this embodiment, the outlet of the buffer tank 3 is connected to the inlet of the pump 10. Specifically, a valve is also installed on the pipe connecting the buffer tank 3 and the pump 10. When the reflux liquid stored in the buffer tank 3 reaches a preset value, the valve on the outlet pipe of the buffer tank 3 is opened and the valve on the outlet pipe of the high-salt wastewater treatment tank 2 is closed, so that the wastewater in the buffer tank 3 cools the flue gas in the quench spray tower 8, thereby realizing the recycling of wastewater. Conversely, the valve on the outlet pipe of the buffer tank 3 is closed and the valve on the outlet pipe of the high-salt wastewater treatment tank 2 is opened.
[0030] In this embodiment, a salt inhibitor additive 6 is also included, installed on the high-salinity wastewater treatment tank. The salt inhibitor additive 6 includes a salt inhibitor storage tank, with a discharge pipe installed at the discharge end of the storage tank. A control valve for controlling the amount of salt inhibitor added is installed on the discharge pipe. Thus, by adding the salt inhibitor, the formation of salt particles in the high-salinity wastewater is effectively prevented.
[0031] In this embodiment, a mixing element 7 is also included, installed inside the high-salinity wastewater treatment tank. The mixing element 7 includes a motor 701 mounted on the high-salinity wastewater treatment tank 2. The output end of the motor 701 has a rotating shaft 702. A first stirring rod 703, a second stirring rod 704, a third stirring rod 705, and a fourth stirring rod 706 are mounted on the rotating shaft 702. The first stirring rod 703 and the second stirring rod 704 extend through the top and bottom of the rotating shaft 702. The third stirring rod 705 and the fourth stirring rod 706 are located on the same side of the rotating shaft 702. A first spiral blade 707 is connected to the end of both the first stirring rod 703 and the end of the second stirring rod 704. A second spiral blade 708 is connected to the second stirring rod 702, the third stirring rod 705, and the fourth stirring rod 706, and the second spiral blade 708 is located inside the first spiral blade 701. This allows the salt inhibitor to be fully mixed with the high-salinity wastewater, preventing the formation of salt particles.
[0032] The working principle of this utility model is as follows: During operation, the siphon pipe is opened, allowing the high-salt wastewater in the wet desulfurization tower 1 to flow into the high-salt wastewater treatment tank 2. The suspended solids and some salt particles in the water are filtered through the filter element on the siphon pipe. Then, a salt inhibitor is added, and the mixing element 7 is activated to ensure that the high-salt wastewater and the salt inhibitor are fully and evenly mixed. After even mixing, the liquid pump 10 is activated to spray the high-salt wastewater through the nozzle 11 to contact the high-temperature flue gas of the wet desulfurization tower 1. This causes the salt to exist in powder or small particle form and fall off along with the ash, entering the ash collection hopper at the bottom of the quench spray tower 8. This improves the cleanliness of the surface of the quench spray tower 8, thereby preventing the scaling and clogging problem caused by salt precipitation in the quench spray tower. This saves wastewater treatment costs, reduces the use of fresh water, and does not affect the normal operation of the incinerator.
[0033] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.
[0034] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A system for reusing wet high-salinity wastewater from incineration, characterized in that: The system includes a wet desulfurization tower and a high-salt wastewater treatment tank. A siphon device is installed between the wet desulfurization tower and the high-salt wastewater treatment tank to connect them. A filter element is connected to the siphon device. The air outlet of the high-salt wastewater treatment tank is connected to a buffer tank. The water outlet of the buffer tank is connected to a flow regulator. The water outlet of the flow regulator is connected to a quench spray tower. The air inlet of the quench spray tower is connected to the air outlet of the wet desulfurization tower and the buffer tank through a pipeline.
2. The incineration wet high-salinity wastewater reuse system according to claim 1, characterized in that: The siphon component includes a siphon tube, one end of which is connected to the filter component. The filter component includes a housing, inside which a filter is provided, and on the surface of the housing are a plurality of filter holes that match the filter.
3. The incineration wet high-salinity wastewater reuse system according to claim 2, characterized in that: The housing includes an upper housing and a lower housing that matches the upper housing, and the upper housing and the lower housing together form a sphere.
4. The incineration wet high-salinity wastewater reuse system according to claim 3, characterized in that: The upper and lower shells are detachably connected to each other, and a magnetic attraction element is provided between the upper and lower shells. The magnetic attraction element includes a magnet and an iron block respectively disposed on the upper and lower shells.
5. The incineration wet high-salinity wastewater reuse system according to claim 4, characterized in that: It also includes a snap-fit component, which is a limiting ring. One side of the limiting ring is fixedly connected to the inner wall of the wet deacidification tower, and the siphon pipe passes through the limiting ring and is connected to the upper shell.
6. The incineration wet high-salinity wastewater reuse system according to claim 1, characterized in that: The flow regulating component includes a pump connected to the outlet of the high-salt wastewater treatment tank. The output end of the pump is connected to a nozzle and a return pipe connected to a buffer tank. The nozzle is located inside the quench spray tower.
7. The incineration wet high-salinity wastewater reuse system according to claim 6, characterized in that: The outlet of the buffer tank is connected to the inlet of the pump.
8. The wet high-salinity wastewater reuse system according to claim 1, characterized in that: It also includes a salt inhibitor additive installed on the high-salt wastewater treatment tank. The salt inhibitor additive includes a salt inhibitor storage tank, and a discharge pipe is installed at the discharge end of the salt inhibitor storage tank. A control valve for controlling the amount of salt inhibitor added is installed on the discharge pipe.
9. The incineration wet high-salinity wastewater reuse system according to claim 1, characterized in that: It also includes a mixing element installed inside the high-salinity wastewater treatment tank. The mixing element includes a motor installed on the high-salinity wastewater treatment tank. The output end of the motor is provided with a rotating shaft. A first stirring rod, a second stirring rod, a third stirring rod, and a fourth stirring rod are installed on the rotating shaft. The first stirring rod and the second stirring rod are arranged to pass through the top and bottom of the rotating shaft. The third stirring rod and the fourth stirring rod are located on the same side of the rotating shaft.
10. The incineration wet high-salinity wastewater reuse system according to claim 9, characterized in that: Both the end of the first stirring rod and the end of the second stirring rod are connected to a first spiral blade; the second stirring rod, the third stirring rod, and the fourth stirring rod are connected to a second spiral blade, and the second spiral blade is located inside the first spiral blade.