Ship desulfurization wastewater treatment device and treatment method thereof

Abstract

The invention provides a ship desulfurization wastewater treatment device and a treatment method thereof. The ship desulfurization wastewater treatment device comprises a desulfurization wastewater collection tank, an alkaline mineral dissolution reactor, an alkaline microorganism reactor and a discharge device, the desulfurization wastewater collecting tank outputs the wastewater to the alkaline mineral dissolving reactor and / or the alkaline microorganism reactor, the alkaline mineral dissolving reactor and / or the alkaline microorganism reactor carries out neutralization reaction to increase the pH value of the wastewater, treated water meeting the pH value standard is obtained, and finally the treated water is discharged through the discharging device. The alkalization treatment system with environment optimization and carbon negative emission functions has a wide application prospect and remarkable economic and ecological benefits; the method is suitable for large-scale industrial application.

Description

Technical Field

[0001] The invention relates to a ship desulfurization wastewater treatment technology, and in particular to a ship desulfurization wastewater treatment device and a treatment method thereof. Background Art

[0002] With the rapid development of international trade, the importance of the global ocean shipping industry has become increasingly prominent. However, while the shipping industry brings economic benefits, it also has a significant impact on the environment, especially in terms of exhaust emissions and water pollution. Among them, the flue gas emitted by ship engines contains a large amount of sulfur oxides. According to statistics, the global shipping industry emits about 16.2 million tons of sulfur dioxide into the atmosphere each year, accounting for 16.36% of the total global sulfur dioxide emissions, leading to increased air pollution and significantly increasing the risk of acid rain. In response to this problem, the International Maritime Organization and local governments have successively formulated regulations to strictly limit the content of sulfur oxides in ship flue gas, and the ship exhaust gas desulfurization system came into being.

[0003] The desulfurization technology for ship exhaust gas is based on the absorption of sulfur dioxide by seawater, and is usually achieved by installing desulfurization towers on the exhaust pipes of the main engine and generator. The sulfur dioxide and particulate matter in the flue gas are treated by the desulfurization tower and absorbed by the seawater, so that the exhaust gas meets environmental protection requirements. However, although the desulfurization system effectively reduces sulfur emissions in the air, the acidic wash water generated during the treatment process and discharged into the sea may aggravate ocean acidification and form a "pollution transfer" effect. Although the International Maritime Organization has formulated relevant guidelines to manage the discharge of wash water, the traditional method of neutralizing wash water with alkaline solutions can usually only meet the minimum emission standards and is difficult to effectively alleviate the problem of ocean acidification. As the scale of the shipping industry continues to expand, innovative technical solutions are urgently needed. These solutions should not only ensure compliance with regulations, but also effectively improve the quality of the marine environment.

[0004] In addition, greenhouse gases emitted by the shipping industry also have a profound impact on climate change. According to statistics, the global shipping industry has emitted more than 1 billion tons of carbon dioxide each year, which has further exacerbated the problem of global warming. Therefore, the development of effective carbon sink technology has become a direction that urgently needs to be broken through. As an important carbon reservoir on Earth, the total carbon storage of the ocean exceeds 38 trillion tons. Among them, ocean alkalization technology has attracted widespread attention due to its high carbon fixation potential. This technology promotes the transfer of atmospheric carbon dioxide to the ocean and seals it in the form of bicarbonate by adding alkaline substances to seawater. However, there are still many challenges in the implementation of this technology at this stage, such as how to select efficient alkaline materials and solvents to improve the efficiency of alkalinity transfer, and how to avoid the formation of secondary carbonate precipitation after the dissolution of alkaline materials.

[0005] In response to the above problems, an innovative solution has been proposed to use the tail water of sewage treatment plants to dissolve alkaline substances and transport alkalinity to the ocean. Compared with natural water bodies, the tail water of sewage treatment plants is very suitable as a solvent for alkaline substances due to its lower pH value and higher carbon dioxide partial pressure, which can effectively avoid the formation of carbonate precipitation. Existing studies have proved the feasibility of this solution through laboratory and field experiments. At the same time, the wash water generated during the desulfurization of ship exhaust gas has similar characteristics and can be used as a potential carrier for alkalinity delivery. After the alkalinized wash water enters the ocean, it can not only achieve negative emissions, but also alleviate the problem of ocean acidification, providing a new idea for solving the current environmental crisis. However, this technology is still some distance away from large-scale industrial application, and further theoretical research and technical optimization are needed. Summary of the invention

[0006] Therefore, in order to solve the above problems, the present invention provides a treatment device and a treatment method for ship desulfurization wastewater.

[0007] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0008] A treatment device for ship desulfurization wastewater, comprising a desulfurization wastewater collection tank, an alkaline mineral dissolution reactor, an alkaline microbial reactor and a discharge device; the desulfurization wastewater collection tank has a water inlet and a water outlet, the water outlet of the desulfurization wastewater collection tank is provided with a temperature detector and a valve, the desulfurization wastewater collection tank is provided with a collection tank circulation pipe, the collection tank circulation pipe is provided with a pumping pump and a heat exchanger; the alkaline mineral dissolution reactor and / or the alkaline microbial reactor comprises a reaction tank and a feeding port connected to the reaction tank and a reaction tank circulation pipe, the water outlet of the desulfurization wastewater collection tank is respectively connected to the alkaline mineral dissolution reactor and the alkaline microbial reactor, and the alkaline mineral dissolution reactor and the alkaline microbial reactor are provided with a water inlet and a water outlet of the desulfurization wastewater collection tank ... The water inlet end of the reaction tank of the alkaline mineral dissolution reactor and the water inlet end of the reaction tank of the alkaline microorganism reactor are connected; the water inlet end and the water outlet end of the reaction tank are both provided with a pH detector and a valve, and the circulation pipe of the reaction tank is provided with a water pump and a valve; the water outlet end of the reaction tank of the alkaline mineral dissolution reactor and the water outlet end of the reaction tank of the alkaline microorganism reactor are both connected to the water inlet end of the discharge device, and the discharge device is provided with a discharge port, a pH detector and a reflux port, and the reflux port is respectively connected to the water inlet end of the reaction tank of the alkaline mineral dissolution reactor and the water inlet end of the reaction tank of the alkaline microorganism reactor.

[0009] Furthermore, a filtering device is provided in the desulfurization wastewater collection tank.

[0010] Furthermore, the water outlet end of the desulfurization wastewater collection tank is connected to a water outlet pipe, and the temperature detector and the valve are arranged on the water outlet pipe; the water outlet pipe is connected to a first water pipe, and the water inlet end of the reaction tank of the alkaline mineral dissolution reactor and the water inlet end of the reaction tank of the alkaline microbial reactor are respectively connected through the first water pipe; the first water pipe is provided with a water pump.

[0011] Furthermore, the water inlet ends of the reaction tanks of the alkaline mineral dissolution reactor and the alkaline microbial reactor are both connected to a water inlet pipe, and the pH detector and valve provided at the water inlet ends of the reaction tanks are assembled on the water inlet pipe.

[0012] Furthermore, the reflux port of the discharge device is connected to a reflux pipe, and the reflux pipe is connected to the water inlet pipe; a water pump and a valve are provided on the reflux pipe.

[0013] Furthermore, the water outlet end of the reaction tank of the alkaline mineral dissolution reactor and the water outlet end of the reaction tank of the alkaline microbial reactor are both connected to a water outlet pipe, the pH detector and valve arranged at the water outlet end of the reaction tank are assembled on the water outlet pipe, the first end of the reaction tank circulation pipe is connected to the water outlet pipe, and the second end thereof is connected to the reaction tank.

[0014] Furthermore, the water outlet pipe of the reaction tank of the alkaline mineral dissolution reactor and the water outlet pipe of the reaction tank of the alkaline microbial reactor are connected to the water inlet end of the discharge device through a second water pipe with two inlets and one outlet.

[0015] Furthermore, a stirrer is provided in the reaction tank of the alkaline mineral dissolution reactor and the reaction tank of the alkaline microbial reactor.

[0016] Furthermore, it also includes a controller; the output ends of the temperature detector and each pH detector are connected to the input end of the controller, and the output end of the controller is connected to each water pump and each valve.

[0017] A method for treating ship desulfurization wastewater comprises the following steps:

[0018] S1, providing the above-mentioned ship desulfurization wastewater treatment device, transporting the ship desulfurization wastewater to the desulfurization wastewater collection tank, and the temperature detector detecting the temperature of the ship desulfurization wastewater at the output end of the desulfurization wastewater collection tank. If the temperature is lower than the set range, the pump on the collection tank circulation pipe is turned on to make the ship desulfurization wastewater flow back to the desulfurization wastewater collection tank after passing through the heat exchanger until the temperature detector detects that the temperature is within the set range;

[0019] S2, the desulfurization wastewater collection tank outputs the ship desulfurization wastewater to the alkaline mineral dissolution reactor and / or the alkaline microbial reactor, the pH detector at the water inlet end of the reaction tank detects the pH value of the input ship desulfurization wastewater, and controls the amount of reactants added and performs a neutralization reaction according to the input detected pH value; the reactants added to the alkaline mineral dissolution reactor are alkaline minerals; the reactants added to the alkaline microbial reactor are alkaline culture fluid of microorganisms; the pH detector at the water outlet end of the reaction tank detects the pH value of the reaction water output from the reaction tank, and if the pH value is not within the preset range, the valve and the water pump on the circulation pipe of the reaction tank are opened to circulate the reaction water in the reaction tank until the pH detector at the water outlet end of the reaction tank detects that the pH value meets the standard, thereby obtaining treated water;

[0020] S3, output the treated water in the alkaline mineral dissolution reactor and / or the alkaline microbial reactor to the discharge device, and the pH detector on the discharge device detects the pH value of the input treated water. If the pH value is not within the preset range, it is re-output from the reflux port to the alkaline mineral dissolution reactor and / or the alkaline microbial reactor; if the pH value is within the preset range, it is discharged from the discharge port.

[0021] The technical solution provided by the present invention has the following beneficial effects:

[0022] This application introduces an alkaline mineral dissolution reactor and / or an alkaline microbial reactor to efficiently neutralize the acidic wash water and significantly increase its pH value, thereby alleviating the local ocean acidification problem caused by ship emissions, especially in waterways and coastal areas with high shipping density. The system increases the alkalinity of the wash water, enhances the ocean's ability to absorb atmospheric carbon dioxide, promotes the conversion of carbon dioxide to bicarbonate, achieves long-term carbon storage, and effectively supports negative emission targets. In addition, the system improves the marine ecological environment and provides more suitable living conditions for marine organisms (such as corals and shellfish) that rely on calcium carbonate structures. Through this efficient alkalinization treatment method, ship operators can also obtain economic benefits through carbon credits and reduce the future repair costs that may be caused by ocean acidification through preventive measures. This alkalinization treatment system with both environmental optimization and carbon negative emission functions has broad application prospects and significant economic and ecological benefits. And the treatment device for the ship's desulfurization wastewater has a simple structure and is suitable for large-scale industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure shows a schematic diagram of the structure of a treatment device for ship desulfurization wastewater in an embodiment;

[0024] Figure 2 The figure shows a schematic diagram of the structure of the desulfurization wastewater collection tank in the embodiment;

[0025] Figure 3 Shown Figure 2 Sectional view along line AA;

[0026] Figure 4 Shown is a schematic structural diagram of an alkaline mineral dissolution reactor in an embodiment;

[0027] Figure 5 Shown Figure 4 Sectional view along the midline BB;

[0028] Figure 6 Shown is a schematic structural diagram of an alkaline microbial reactor in an embodiment;

[0029] Figure 7 Shown Figure 6 Sectional view along the CC line. DETAILED DESCRIPTION

[0030] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0031] In the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0032] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0033] Reference Figures 1 to 7As shown, a treatment device for ship desulfurization wastewater provided in this embodiment includes a desulfurization wastewater collecting tank 2, an alkaline mineral dissolution reactor 100, an alkaline microbial reactor 110 and a discharge device 23; the desulfurization wastewater collecting tank 2 has an inlet end and an outlet end. Specifically, the inlet end of the desulfurization wastewater collecting tank 2 is connected to an inlet pipe (defined as a first inlet pipe 1) as an introduction of wastewater to be treated, and the outlet end of the desulfurization wastewater collecting tank 2 is connected to an outlet pipe (defined as a first outlet pipe 301) ; The water outlet end of the desulfurization wastewater collecting tank 2 (i.e., the first water outlet pipe 301) is provided with a temperature detector 302 and a valve (defined as the first valve 4), and the desulfurization wastewater collecting tank 2 is provided with a collecting tank circulation pipe 202, and specifically, both ends of the collecting tank circulation pipe 202 are connected to the tank body of the desulfurization wastewater collecting tank 2, and the collecting tank circulation pipe 202 is provided with a water pump (defined as the first water pump 203) and a heat exchanger 204; the heat exchanger 204 is used for an external heat source.

[0034] The alkaline mineral dissolution reactor 100 and the alkaline microorganism reactor 110 include a reaction tank and a feeding port and a reaction tank circulation pipe connected to the reaction tank. For the convenience of distinction, the reaction tank, the feeding port and the reaction tank circulation pipe of the alkaline mineral dissolution reactor 100 are defined as the alkaline mineral reaction tank 10, the alkaline mineral feeding port 1001 and the first reaction tank circulation pipe 15, and the reaction tank, the feeding port and the reaction tank circulation pipe of the alkaline microorganism reactor 110 are defined as the alkaline microorganism reaction tank 11, the alkaline microorganism feeding port 1101 and the second reaction tank circulation pipe 20; the water outlet end of the desulfurization wastewater collection tank 2 is respectively connected to the water inlet end of the reaction tank of the alkaline mineral dissolution reactor 100 and the water inlet end of the reaction tank of the alkaline microorganism reactor 110; specifically, the first water outlet pipe 301 is connected to a first water pipe 3, and the water inlet end of the alkaline mineral reaction tank 10 and the water inlet end of the alkaline microorganism reaction tank 11 are respectively connected through the first water pipe 3; a water pump (defined as a second water pump 5) is arranged on the first water pipe 3. Specifically, the water inlet end of the alkaline mineral reaction tank 10 is connected to a water inlet pipe (defined as the second water inlet pipe 303), and is connected to the first water pipe 3 through the second water inlet pipe 303. The water inlet end of the alkaline microbial reaction tank 11 is connected to a water inlet pipe (defined as the third water inlet pipe 304), and is connected to the first water pipe 3 through the third water inlet pipe 304. The water inlet end of the reaction tank is provided with a pH detector and a valve, such as a first pH detector 8 and a second valve 6 are provided on the second water inlet pipe 303; a second pH detector 9 and a third valve 7 are provided on the third water inlet pipe 304. The water outlet end of the reaction tank is also provided with a pH detector and a valve, and the circulation pipes of the reaction tanks are provided with water pumps and valves; for example, the water outlet end of the alkaline mineral reaction tank 10 is connected to a water outlet pipe (defined as the second water outlet pipe 1201), the second water outlet pipe 1201 is equipped with a third pH detector 13 and a fourth valve 14, and the first reaction tank circulation pipe 15 is provided with a third water pump 17 and a fifth valve 16; the water outlet end of the alkaline microbial reaction tank 11 is connected to a water outlet pipe (defined as the third water outlet pipe 1202), the third water outlet pipe 1202 is equipped with a fourth pH detector 18 and a sixth valve 19, and the third reaction tank circulation pipe 20 is provided with a fourth water pump 22 and a seventh valve 21.

[0035] The water outlet end of the reaction tank of the alkaline mineral dissolution reactor 100 and the water outlet end of the reaction tank of the alkaline microbial reactor 110 are both connected to the water inlet end of the discharge device 23. As in the present embodiment, the second water outlet pipe 1201 and the third water outlet pipe 1202 are connected to the water inlet end of the discharge device 23 through the second water pipe 12 with two inlets and one outlet. The discharge device 23 is provided with a discharge port 27, a pH detector (defined as the fifth pH detector 2301) and a reflux port, and the reflux port is respectively connected to the water inlet end of the reaction tank of the alkaline mineral dissolution reactor 100 and the water inlet end of the reaction tank of the alkaline microbial reactor 110.

[0036] This embodiment also provides a treatment method based on the above-mentioned ship desulfurization wastewater treatment device, comprising the following steps:

[0037] S1, provide the above-mentioned ship desulfurization wastewater treatment device, transport the ship desulfurization wastewater to the desulfurization wastewater collecting tank 2, the temperature detector 302 detects the temperature of the ship desulfurization wastewater at the output end of the desulfurization wastewater collecting tank 2, if the temperature is lower than the set range, start the first pumping pump 203 on the collection tank circulation pipe 202, so that the ship desulfurization wastewater passes through the heat exchanger 204 and then flows back to the desulfurization wastewater collecting tank 2, and heats the ship desulfurization wastewater until the temperature detector 302 detects that the temperature is within the set range; at this time, the next step can be carried out.

[0038] S2, the desulfurization wastewater collection tank 2 outputs the ship's desulfurization wastewater to the alkaline mineral dissolution reactor 100 and / or the alkaline microbial reactor 110. Specifically, it can be selected to output to the alkaline mineral dissolution reactor 100 or the alkaline microbial reactor 110 according to actual conditions, or it can be output to the above two reactors at the same time; the output means is to open the first valve 4 and the second pump 5, and the second pump 5 outputs the ship's desulfurization wastewater in the desulfurization wastewater collection tank 2.

[0039] When output to the alkaline mineral dissolution reactor 100, the first pH detector 8 detects the pH value of the ship desulfurization wastewater, and controls the amount of reactant added according to the input detected pH value. The reactant is an alkaline mineral, which is added from the alkaline mineral feeding port 1001; the means of adding can be manually controlled addition or electrically controlled operation system addition. The input ship desulfurization wastewater and alkaline mineral are neutralized in the alkaline mineral reaction tank 10, and the third pH detector 13 at the output end detects the pH value after the neutralization reaction. If the pH value is not within the preset range (such as lower than the preset range), the fifth valve 16 and the third water pump 17 on the first reaction tank circulation pipe 15 are opened to circulate the reaction water in the alkaline mineral reaction tank 10 until the third pH detector 13 at the water outlet of the reaction tank detects that the pH value meets the standard, and treated water that meets the pH value is obtained;

[0040] When outputting to the alkaline microbial reactor 110, the second pH detector 9 detects the pH value of the ship desulfurization wastewater, and controls the amount of reactant added according to the input detected pH value. The reactant is a microbial alkaline culture solution, which is added from the alkaline microbial feeding port 1101; the feeding method can be manually controlled or electrically controlled. The input ship desulfurization wastewater and alkaline microorganisms are neutralized in the alkaline microbial reactor 11, and the fourth pH detector 18 at the output end detects the pH value after the neutralization reaction. If the pH value is not within the preset range (such as lower than the preset range), the seventh valve 21 and the fourth pump 22 on the second reactor circulation pipe 20 are opened to circulate the reaction water in the alkaline microbial reactor 11 until the fourth pH detector 18 at the outlet of the reactor detects that the pH value meets the standard, and the treated water that meets the pH value is obtained.

[0041] S3, output the treated water in the alkaline mineral dissolution reactor 100 and / or the alkaline microorganism reactor 110 to the discharge device 23, specifically, by opening the fourth valve 14, the treated water in the alkaline mineral dissolution reactor 100 is output to the discharge device 23, and by opening the sixth valve 19, the treated water in the alkaline microorganism reactor 110 is output to the discharge device 23. The fifth pH detector 2301 on the discharge device 23 detects the pH value of the input treated water. If the pH value is not within the preset range, it is re-output from the reflux port to the alkaline mineral dissolution reactor 100 and / or the alkaline microorganism reactor 110 (i.e., the process of step S2 is re-performed); if the pH value is within the preset range, it is discharged from the discharge port 27.

[0042] In this way, effective treatment of ship desulfurization wastewater is achieved.

[0043] The present application introduces an alkaline mineral dissolution reactor 100 and / or an alkaline microbial reactor 110 to efficiently neutralize the acidic wash water and significantly increase its pH value, thereby alleviating the local ocean acidification problem caused by ship emissions, especially in waterways and coastal areas with high shipping density. The system increases the alkalinity of the wash water, enhances the ocean's ability to absorb atmospheric carbon dioxide, promotes the conversion of carbon dioxide to bicarbonate, achieves long-term carbon storage, and effectively supports negative emission targets. In addition, the system improves the marine ecological environment and provides more suitable living conditions for marine organisms (such as corals and shellfish) that rely on calcium carbonate structures. Through this efficient alkalinization treatment method, ship operators can also obtain economic benefits through carbon credits and reduce the future repair costs that may be caused by ocean acidification through preventive measures. This alkalinization treatment system with both environmental optimization and carbon negative emission functions has broad application prospects and significant economic and ecological benefits. And the treatment device for the ship desulfurization wastewater has a simple structure and is suitable for large-scale industrial applications.

[0044] Furthermore, in this embodiment, a filter device 201 is provided in the desulfurization wastewater collection tank 2, and the particles in the input ship desulfurization wastewater are filtered through the filter device 201 to ensure the subsequent pumps and pipelines. Specifically, the filter device 201 can adopt the filter screen and other components in the prior art.

[0045] Furthermore, in this embodiment, a second pump 5 is provided on the first water pipe 3, which can stably output the wastewater in the desulfurization wastewater collection tank 2, and is not affected by the position between the collection tank and the reaction tank. Further, in this embodiment, the positions of the alkaline mineral dissolution reactor 100 and the alkaline microbial reactor 110 are both higher than the discharge device 23, so the treated water of the alkaline mineral dissolution reactor 100 and the alkaline microbial reactor 110 can flow into the discharge device 23 by its own gravity. Of course, in other embodiments, the wastewater in the desulfurization wastewater collection tank 2 can also flow into the alkaline mineral dissolution reactor 100 and / or the alkaline microbial reactor 110 by its own gravity; a pump can also be provided on the second water pipe 12 to pump the treated water in the alkaline mineral dissolution reactor 100 and / or the alkaline microbial reactor 110 to the discharge device 23, etc.

[0046] Furthermore, in this embodiment, the reflux port of the discharge device 23 is connected to a reflux pipe 24, and the reflux pipe 24 is connected to the first water inlet pipe 3; the reflux pipe 24 is provided with a pump (defined as the fifth pump 25) and a valve (defined as the eighth valve 26). When reflux is required, the eighth valve 26 is opened, and the treated water in the discharge device 23 is pumped back into the first water inlet pipe 3 by the fifth pump 25, and is transmitted to the alkaline mineral dissolution reactor 100 and / or the alkaline microbial reactor 110 by the first water inlet pipe 3. In this way, the pipe section can be well saved, the structure is more concise, and it is convenient for management.

[0047] Furthermore, in this embodiment, the first end of the first reaction tank circulation pipe 15 is connected to the second outlet pipe 1201, specifically connected between the third pH detector 13 and the fourth valve 14, and the second end thereof is connected to the alkaline mineral reaction tank 10, and the reaction water detected by the third pH detector 13 is directly withdrawn to avoid the reaction water in the third pH detector 13 not circulating and affecting the detection. Similarly, the first end of the second reaction tank circulation pipe 20 is connected to the third outlet pipe 1202, specifically connected between the fourth pH detector 18 and the sixth valve 19, and the second end thereof is connected to the alkaline microbial reaction tank 11. The detection results are more timely and accurate.

[0048] The alkaline mineral reaction tank 10 and the alkaline microbial reaction tank 11 are both provided with a stirrer, and the stirrer provided in the alkaline mineral reaction tank 10 is defined as the first stirrer 1002, and the stirrer provided in the alkaline microbial reaction tank 11 is defined as the second stirrer 1102. Through stirring, the neutralization reaction in the reaction tank is more complete and more efficient.

[0049] Furthermore, in this embodiment, a controller 29 is also included; the output ends of the temperature detector 302 and each pH detector (i.e., the first pH detector 8 to the fifth pH detector 2301) are connected to the input end of the controller 29, and the output end of the controller 29 is connected to each pump (i.e., the first pump 203 to the fifth pump 25) and each valve (i.e., the first valve 4 to the eighth valve 26). Each valve is an electrically controlled valve, such as a solenoid valve. By setting the controller 29, each step of the above-mentioned treatment method can be controlled by the controller 29, such as the temperature detector 302 and each pH detector transmit the data detected to the controller 29, which is judged by the controller 29 and then controls the corresponding pump or valve; the automatic control of the above-mentioned treatment method is realized, and the accuracy and efficiency can be greatly improved. Specifically, the structure of the controller can be realized by using a PLC control system in the prior art, and its specific structure, connection and control principle are not described in detail here. Of course, in other embodiments, the above-mentioned steps can also be completed by manual operation.

[0050] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A treatment device for ship desulfurization wastewater, characterized in that: It includes a desulfurization wastewater collection tank, an alkaline mineral dissolution reactor, an alkaline microbial reactor and a discharge device; the desulfurization wastewater collection tank has a water inlet and a water outlet, the water outlet of the desulfurization wastewater collection tank is provided with a temperature detector and a valve, the desulfurization wastewater collection tank is provided with a collection tank circulation pipe, and the collection tank circulation pipe is provided with a water pump and a heat exchanger; The alkaline mineral dissolution reactor and / or alkaline microorganism reactor comprises a reaction tank and a feeding port and a reaction tank circulation pipe connected to the reaction tank; the water outlet of the desulfurization wastewater collection tank is respectively connected to the water inlet of the reaction tank of the alkaline mineral dissolution reactor and the water inlet of the reaction tank of the alkaline microorganism reactor; the water inlet and water outlet of the reaction tank are both provided with a pH detector and a valve, and the reaction tank circulation pipe is provided with a water pump and a valve; The water outlet end of the reaction tank of the alkaline mineral dissolution reactor and the water outlet end of the reaction tank of the alkaline microbial reactor are both connected to the water inlet end of the discharge device, and the discharge device is provided with a discharge port, a pH detector and a reflux port, and the reflux port is respectively connected to the water inlet end of the reaction tank of the alkaline mineral dissolution reactor and the water inlet end of the reaction tank of the alkaline microbial reactor.

2. The treatment device for ship desulfurization wastewater according to claim 1, characterized in that: A filtering device is arranged in the desulfurization wastewater collecting tank.

3. The treatment device for ship desulfurization wastewater according to claim 1, characterized in that: The water outlet end of the desulfurization wastewater collection tank is connected to the water outlet pipe, and the temperature detector and the valve are arranged on the water outlet pipe; the water outlet pipe is connected to the first water pipe, and the water inlet end of the reaction tank of the alkaline mineral dissolution reactor and the water inlet end of the reaction tank of the alkaline microbial reactor are respectively connected through the first water pipe; the first water pipe is provided with a water pump.

4. The treatment device for ship desulfurization wastewater according to claim 3 is characterized in that: The water inlet ends of the reaction tanks of the alkaline mineral dissolution reactor and the alkaline microbial reactor are both connected to a water inlet pipe, and the pH detector and valve arranged at the water inlet ends of the reaction tanks are assembled on the water inlet pipe.

5. The treatment device for ship desulfurization wastewater according to claim 3, characterized in that: The reflux port of the discharge device is connected to a reflux pipe, and the reflux pipe is connected to the water inlet pipe; a water pump and a valve are arranged on the reflux pipe.

6. The treatment device for ship desulfurization wastewater according to claim 1, characterized in that: The water outlet ends of the reaction tanks of the alkaline mineral dissolution reactor and the water outlet ends of the reaction tanks of the alkaline microbial reactor are both connected to a water outlet pipe, the pH detector and valve arranged at the water outlet ends of the reaction tanks are assembled on the water outlet pipe, the first end of the reaction tank circulation pipe is connected to the water outlet pipe, and the second end thereof is connected to the reaction tank.

7. The treatment device for ship desulfurization wastewater according to claim 6, characterized in that: The water outlet pipe of the reaction tank of the alkaline mineral dissolution reactor and the water outlet pipe of the reaction tank of the alkaline microorganism reactor are connected to the water inlet end of the discharge device through a second water pipe with two inlets and one outlet.

8. The treatment device for ship desulfurization wastewater according to claim 1, characterized in that: Agitators are provided in the reaction tanks of the alkaline mineral dissolution reactor and the alkaline microbial reactor.

9. The device for treating ship desulfurization wastewater according to any one of claims 1 to 8, characterized in that: It also includes a controller; the output ends of the temperature detector and each pH detector are connected to the input end of the controller, and the output end of the controller is connected to each water pump and each valve.

10. A method for treating ship desulfurization wastewater, characterized in that: The steps include: S1, providing a treatment device for ship desulfurization wastewater according to any one of claims 1 to 9, transporting ship desulfurization wastewater to a desulfurization wastewater collecting tank, and using a temperature detector to detect the temperature of the ship desulfurization wastewater at the output end of the desulfurization wastewater collecting tank. If the temperature is lower than a set range, turning on a pump on a circulation pipe of the collecting tank to allow the ship desulfurization wastewater to flow back to the desulfurization wastewater collecting tank after passing through a heat exchanger, until the temperature detector detects that the temperature is within a set range; S2, the desulfurization wastewater collection tank outputs the ship desulfurization wastewater to the alkaline mineral dissolution reactor and / or the alkaline microbial reactor, and the pH detector at the water inlet end of the reaction tank detects the pH value of the input ship desulfurization wastewater, and controls the amount of reactants added according to the input detected pH value and performs a neutralization reaction; The reactant added to the alkaline mineral dissolution reactor is an alkaline mineral; the reactant added to the alkaline microbial reactor is an alkaline culture solution of microorganisms; the pH detector at the water outlet of the reaction tank detects the pH value of the reaction water output from the reaction tank, and if the pH value is not within a preset range, the valve and the water pump on the circulation pipe of the reaction tank are opened to circulate the reaction water in the reaction tank until the pH detector at the water outlet of the reaction tank detects that the pH value meets the standard, thereby obtaining treated water; S3, output the treated water in the alkaline mineral dissolution reactor and / or the alkaline microbial reactor to the discharge device, and the pH detector on the discharge device detects the pH value of the input treated water. If the pH value is not within the preset range, it is re-output from the reflux port to the alkaline mineral dissolution reactor and / or the alkaline microbial reactor; if the pH value is within the preset range, it is discharged from the discharge port.

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