Tail water alkalinization adjusting device and adjusting method based on multi-stage reaction tank

Abstract

The application discloses a tail water alkalization adjusting device and method based on a multistage reaction tank. The device comprises a tail water input pipe, an alkalization dissolving tank, an alkali storage tank, a pH adjusting reaction tank and a control system. First, the tail water input pipe is used to input the tail water to be treated into the alkalization dissolving tank and the pH adjusting reaction tank respectively; a part of the tail water to be treated is used as a solvent of an alkalization agent, the alkalization dissolving control box is used to control the dissolution degree of the alkalization agent in the alkalization dissolving tank to obtain alkali; the alkali is stored in the alkali storage tank, the pH adjusting and alkali storage control box is used to add the alkali into the pH adjusting reaction tank, and the alkali is mixed with the remaining part of the tail water again, and the tail water is discharged after treatment, so that the alkalization adjusting treatment of all the tail water is realized. The application adopts a modular design, has a compact structure, has a wide application range, has low maintenance cost, can realize automatic control, realizes real-time monitoring of water quality change and precise control of dosage adjustment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment, and particularly relates to a tail water alkalization adjusting device and method based on a multi-stage reaction tank. BACKGROUND

[0002] In tail water treatment of a sewage treatment plant, increasing the alkalinity of tail water is a new strategy for increasing ocean carbon sinks, aiming to neutralize part of acidic substances in the ocean by discharging alkalized tail water into the ocean, thereby increasing the carbon sink capacity of the ocean. Discharging alkalized tail water into the ocean not only can adjust the pH of seawater and slow down the trend of ocean acidification, but also can enhance the ocean's ability to absorb and store atmospheric CO2, providing a new way to cope with climate change.

[0003] The tail water treatment of a conventional sewage treatment plant mainly focuses on removing suspended particulate matter, organic matter, heavy metals and other harmful substances, and less on the alkalinity adjustment of tail water. The tail water after conventional sewage treatment has relatively low alkalinity, which cannot effectively provide sufficient alkalization for the ocean and cannot meet the demand for increasing ocean carbon sinks. If the alkalinity of tail water is increased according to the existing sewage treatment process, there are many deficiencies. For example, although the method of directly adding alkalizing agent can improve the alkalinity of tail water to a certain extent, due to the lack of fine process control, it is easy to cause excessive or insufficient alkalizing agent, affecting the treatment effect. Excessive alkalizing agent not only causes resource waste, but also may cause secondary pollution to the marine environment after tail water discharge. On the contrary, if the alkalizing agent is insufficient, the ideal alkalization effect cannot be achieved, which weakens the role of alkalized tail water in increasing ocean carbon sinks.

[0004] Therefore, in the alkalization process, the pH of tail water and the amount of alkalizing agent added are difficult to monitor and control in real time and accurately, which may lead to unstable alkalization effect of tail water. Although some processes in the prior art can be automatically controlled to a certain extent, they usually have complex structures, large equipment, high operation and maintenance difficulty, and relatively high running cost. Therefore, how to develop a tail water treatment device with simple structure, easy operation and precise alkalization has become an important research direction for increasing ocean carbon sinks. SUMMARY

[0005] The application aims to overcome the deficiencies of the prior art, and provides a tail water alkalization adjusting device and method based on a multi-stage reaction tank, which can efficiently and accurately adjust the alkalinity of tail water to meet the discharge standard, and can neutralize acidic substances and enhance ocean carbon sinks after being discharged into the ocean. The design and operation of the device can effectively overcome the deficiencies of the conventional tail water treatment process, realize the automation, intelligentization and stabilization of tail water alkalization, and solve the problems in the background art.

[0006] One of the technical solutions adopted by the present application to solve its technical problems is: a tail water alkalization adjusting device based on multi-stage reaction tanks is provided, which comprises a tail water input pipe, an alkalization dissolving tank, an alkali storage tank, a pH adjusting reaction tank and a control system;

[0007] The tail water input pipe respectively inputs the tail water to be treated into the alkalization dissolving tank and the pH adjusting reaction tank; the top of the alkalization dissolving tank is provided with an alkalizing agent feeding mechanism, and the inside is provided with an alkalization stirring mechanism; the alkali storage tank is connected with the alkalization dissolving tank through an alkali storage pipe; the pH adjusting reaction tank is connected with the alkali storage tank through an alkali input pipe, and the inside of the pH adjusting reaction tank is provided with a pH adjusting stirring mechanism; the control system comprises an alkalization dissolving control box and a pH adjusting and alkali storage control box, and further comprises sensors arranged in the alkalization dissolving tank, the alkali storage tank and the pH adjusting reaction tank, and water pumps and electronic valves arranged in the tail water input pipe, the alkali storage pipe and the alkali input pipe; the sensors comprise pH sensors, water level sensors, alkalinity sensors and dissolved oxygen sensors.

[0008] In the present application, the water inlet end of the tail water input pipe downstream has two groups of input pipes, a connecting pipe is arranged between the two groups of input pipes, and the two groups of input pipes are respectively provided with electronic valves, water pumps and one-way valves.

[0009] In the present application, the tail water input pipe, the alkali storage pipe and the alkali input pipe respectively comprise at least two groups of parallel pipelines, each group of parallel pipelines is provided with at least one water pump and two electronic valves before and after the water pump.

[0010] In the present application, the alkalization dissolving tank is provided with a top cover and a tank body; the top cover is connected with pH sensor and water level sensor interfaces through openings, and is provided with an alkalizing agent input port, and the alkalizing agent feeding mechanism is arranged in the alkalizing agent input port; the tank body is a hollow tubular cylinder, and three ports are opened at the bottom of the tank body and the cylindrical surface, which are respectively a maintenance drainage port, a tail water inlet and an alkali outlet.

[0011] In the present application, the alkalizing agent feeding mechanism comprises a feeding motor, a spiral feeding hopper and a shell, the spiral feeding hopper is upwardly open and vertically arranged outside the shell, the feeding motor is arranged in the shell and located at the bottom of the spiral feeding hopper, and the advancing direction of the feeding motor is towards the alkalizing agent input port.

[0012] In the present application, the alkalization stirring mechanism and the pH adjusting stirring mechanism comprise stirring paddles, stirring motors and belts, the stirring paddles are arranged in the alkalization dissolving tank or the pH adjusting reaction tank and connected with the stirring motors on the outer wall of the tank body through the belts.

[0013] In the application, the pH adjusting reaction tank includes a top cover and a tank body, the bottom and the cylindrical surface of the tank body are provided with an inspection drainage port, a lye inlet and a standard tail water outlet; the top cover is provided with a hole connected with a pH sensor and a water level sensor interface, and an artificial inspection port is further provided.

[0014] In the application, the alkalization dissolution control box and the pH adjusting and lye storage control box include operation buttons and a display screen; the alkalization dissolution control box is used to control the tail water and alkalization agent feeding of the alkalization dissolution tank, the movement of the alkalization stirring mechanism and the alkalization agent solution discharging; the pH adjusting and lye storage control box is used to control.

[0015] The second technical solution adopted by the application to solve the technical problem is to provide a tail water alkalization adjusting method based on a multi-stage reaction tank, wherein the tail water to be treated is input into the alkalization dissolution tank and the pH adjusting reaction tank through tail water input pipes; part of the tail water to be treated is used as a solvent of the alkalization agent, the pH and water level information of the alkalization dissolution tank is collected, the alkalization dissolution control box is used to control the dissolution degree of the alkalization agent in the alkalization dissolution tank to obtain lye; the lye is stored in a lye storage tank, the pH and water level information of the pH adjusting reaction tank is collected, the pH adjusting and lye storage control box is used to add lye to the pH adjusting reaction tank, and the lye is mixed with the remaining part of the tail water again, and the tail water is discharged after being treated to reach the standard, so that the alkalization adjusting treatment of all the tail water is realized.

[0016] Compared with the background art, the technical solution has the following advantages:

[0017] 1. Modular design: each functional module of the application can be independently installed, disassembled and maintained. Compared with traditional integrated large-scale treatment devices, the modular design facilitates flexible adjustment of the configuration of the equipment according to different sewage treatment scales and discharge requirements. At the same time, the modular design reduces the difficulty of installation and maintenance, so that the equipment can adapt to more use scenarios and sewage treatment plants of different scales, and the operation cost is saved.

[0018] 2. Precise control: the application adopts an alkalization dissolution control box and a pH adjusting and lye storage control box to collect and monitor the pH value, water level height and other parameters in each reaction tank in real time, and realizes precise adjustment of the pH value of the tail water by automatically controlling the addition of the alkalization agent. The control system can automatically adjust the addition amount of the alkalization agent according to the real-time monitoring of the water quality, so as to ensure that the pH value of the tail water after treatment is stable within the set range and meets the environmental protection discharge standard. This precise control not only improves the treatment effect, but also reduces the waste of the alkalization agent and reduces the operation cost.

[0019] 3. Redundant design to improve system reliability: In traditional treatment devices, the failure of key components such as water pumps often leads to the paralysis of the entire treatment system, affecting the stability of tail water discharge. The invention introduces parallel redundant design in the connecting pipeline, which is equipped with corresponding electronic valves, providing a backup channel for key components such as water pumps. When one water pump fails, the standby water pump can immediately take over the work, ensuring the continuous operation of the device. Such redundant design greatly improves the reliability of the system, reduces the complexity of equipment maintenance, and reduces downtime due to equipment failure.

[0020] 4. High automation and intelligent level: The device integrates an automated control system that can communicate with the indoor remote monitoring platform through wireless or wired means, enabling remote monitoring and control of the status of each reaction tank. Through automation and intelligent means, the device can adjust itself according to the real-time conditions of the tail water, reducing the dependence on manual operation. Operators only need to observe data on the monitoring platform and make necessary adjustments, greatly improving work efficiency and reducing the frequency of human intervention.

[0021] 5. Strong adaptability: The device has a compact structure and can be adjusted according to different processing scales and discharge standards, suitable for tail water alkalization treatment in various sewage treatment plants.

[0022] 6. Reduce maintenance costs: Due to the modular design and the presence of access ports at the bottom of each reaction tank, cleaning and maintenance of the device become more convenient. Each functional module can be maintained and replaced individually without the need to disassemble the entire system. This not only shortens the maintenance time, but also reduces the maintenance cost, prolonging the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the embodiment of the invention;

[0024] Figure 2 is a schematic diagram of the tail water input pipe structure;

[0025] Figure 3 is a schematic diagram of the alkalization dissolving tank structure;

[0026] Figure 4 is a schematic diagram of the alkalization dissolving tank structure;

[0027] Figure 5 is a schematic diagram of the alkalization stirring mechanism;

[0028] Figure 6 is a schematic diagram of the alkalization dissolving control box;

[0029] Figure 7 is a schematic diagram of the alkaline solution storage pipe structure;

[0030] Figure 8 Structure diagram of alkali storage tank;

[0031] Figure 9 Structure diagram of alkali input pipe;

[0032] Figure 10 Structure diagram of pH adjustment reaction tank;

[0033] Figure 11 Structure diagram of pH adjustment stirring mechanism.

[0034] alkalization and dissolution control box 104, pH adjustment and alkali storage control box 105, alkalization agent feeding mechanism 106, alkalization stirring mechanism 107, pH adjustment stirring mechanism 108, tail water input pipe 109, alkali storage pipe 110, alkali input pipe 111, alkalization and dissolution tank body 112, alkalization and dissolution tank top cover 113, alkalization and dissolution tank maintenance drainage port 114, alkalization and dissolution tank tail water inlet 115, alkalization and dissolution tank alkali outlet 116, pH sensor interface 117, water level sensor interface 118, alkalization agent input port 119, feeding motor 120, screw mechanism 121, shell 122, button 123, display screen 124, alkali storage tank body 125, alkali storage tank top cover 126, alkali storage tank maintenance drainage port 127, alkali storage tank alkali inlet 128, alkali storage tank alkali outlet 129, pH adjustment reaction tank body 130, pH adjustment reaction tank top cover 131, pH adjustment reaction tank maintenance drainage port 132, pH adjustment reaction tank tail water inlet 133, pH adjustment reaction tank alkali inlet 134, pH adjustment reaction tank up-to-standard tail water outlet 135, manual maintenance port 136, alkalization stirrer 137, alkalization stirring motor 138, dissolution tank belt 139, reaction tank stirrer 140, reaction tank stirring motor 141, reaction tank belt 142, water pipe 143, one-way valve 144, water pump 145, electronic valve 146 DETAILED DESCRIPTION

[0035] The application will be further described below in conjunction with the drawings and examples. It should be noted that the terms "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0036] EMBODIMENT

[0037] The tail water input pipe 109 respectively inputs the tail water to be treated into the alkali dissolving tank and the pH adjustment reaction tank. As shown in FIG. 1, the tail water input pipe 109 is connected to the tail water inlet of the alkali dissolving tank 101 and the tail water inlet of the pH adjustment reaction tank 103.

[0038] The tail water input pipe 109 respectively inputs the tail water to be treated into the alkali dissolving tank and the pH adjustment reaction tank. As shown in FIG. 1, the tail water input pipe 109 is connected to the tail water inlet of the alkali dissolving tank 101 and the tail water inlet of the pH adjustment reaction tank 103. Figure 2 In the embodiment, the water inlet end of the tail water input pipe 109 has two groups of input pipes, and a connecting pipe 143 is arranged between the two groups of input pipes. In addition, two one-way valves 144, four water pumps 145 and ten electronic valves 146 are further arranged. The two one-way valves 144 are respectively connected to the front end of the tail water inlets of the alkali dissolving tank 101 and the pH adjustment reaction tank 103 to prevent backflow of the tail water. The four water pumps 145 and the eight electronic valves 146 form two parallel pipelines, and the two parallel pipelines are respectively connected to the tail water inlets of the alkali dissolving tank 101 and the pH adjustment reaction tank 103.

[0039] The alkali dissolving tank 101 is composed of an alkali dissolving tank body 112 and an alkali dissolving tank top cover 113. The bottom and the side of the alkali dissolving tank body 112 are provided with three openings, which are respectively an alkali dissolving tank maintenance drainage opening 114, an alkali dissolving tank tail water inlet 115 and an alkali dissolving tank alkali outlet 116. The alkali dissolving tank top cover 113 is connected with a pH sensor interface 117 and a water level sensor interface 118, and is further provided with an alkali agent input port 119. The tail water of the sewage treatment plant enters the alkali dissolving tank tail water inlet 115 and is mixed with the alkali agent entering the alkali agent input port 119 to form alkali which flows out of the alkali dissolving tank alkali outlet 116. The alkali agent feeding mechanism 106 is composed of a feeding motor 120, a spiral mechanism 121 and a shell 122. The alkali agent is fed into the spiral mechanism 121 from the top opening of the shell 122, and the feeding motor 120 drives the spiral mechanism 121 to push the alkali agent into the alkali dissolving tank 101. The alkali stirring mechanism 107 is composed of an alkali stirrer 137, an alkali stirring motor 138 and a dissolving tank belt 139. The alkali stirrer 137 is arranged in the alkali dissolving tank 101, and the alkali stirring motor 138 drives the alkali stirrer 137 through the dissolving tank belt 139 to fully mix the tail water and the alkali agent.

[0040] The alkali dissolution control box 104 is composed of a plurality of buttons 123 and a display screen 124; the water pump 145 and the electronic valve 146 of the tail water input pipe 109 are controlled through the button 123, and the display screen 124 can display the pH value and water level and the like information of the alkali dissolution tank 101.

[0041] The alkali storage tank 102 and the alkali dissolution tank 101 are connected through the alkali storage pipe 110. The alkali storage pipe 110 is sequentially connected by the water pipe 143, two water pumps 145 and seven electronic valves 146; two water pumps 145 and four electronic valves 146 form a parallel pipe, and the two ends are respectively connected to the alkali outlet 116 of the alkali dissolution tank and the alkali inlet 128 of the alkali storage tank.

[0042] The alkali storage tank 102 is composed of an alkali storage tank body 125 and an alkali storage tank top cover 126; the bottom and the side of the alkali storage tank body 125 are provided with three openings, which are respectively the alkali storage tank maintenance drain 127, the alkali storage tank alkali inlet 128 and the alkali storage tank alkali outlet 129; the pH sensor interface 117 and the water level sensor interface 118 are connected to the alkali storage tank top cover 126.

[0043] The pH adjustment reaction tank 103 and the alkali storage tank 102 are connected through the alkali input pipe 111. The alkali input pipe 111 is sequentially connected by the water pipe 143, two water pumps 145 and seven electronic valves 146; two water pumps 145 and four electronic valves 146 form a parallel pipe, and the two ends are respectively connected to the alkali outlet 129 of the alkali storage tank and the alkali inlet 134 of the pH adjustment reaction tank.

[0044] The pH adjustment reaction tank 103 is composed of a pH adjustment reaction tank body 130 and a pH adjustment reaction tank top cover 131; the bottom and the side of the pH adjustment reaction tank body 130 are provided with four openings, which are respectively the pH adjustment reaction tank maintenance drain 132, the pH adjustment reaction tank tail water inlet 133, the pH adjustment reaction tank alkali inlet 134 and the pH adjustment reaction tank qualified tail water outlet 135; the pH sensor interface 117 and the water level sensor interface 118 are connected to the pH adjustment reaction tank top cover 131; at the same time, the pH adjustment reaction tank top cover 131 is provided with a manual maintenance opening 136, which is convenient for the periodic maintenance of the pH adjustment reaction tank.

[0045] The pH adjustment stirring mechanism 108 is composed of a reaction tank stirrer 140, a reaction tank stirring motor 141 and a reaction tank belt 142; the reaction tank stirrer 140 is arranged in the pH adjustment reaction tank 103, the reaction tank stirring motor 141 drives the reaction tank stirrer 140 through the reaction tank belt 142 to fully mix the tail water and the alkali.

[0046] A tail water alkalization adjustment method based on a multi-stage reaction tank is performed by using the device of the embodiment, and includes the following steps:

[0047] First, the tail water input pipe 109 inputs the sewage treatment plant to be treated tail water into the alkalization dissolving tank 101 and the pH adjustment reaction tank 103 respectively; wherein a part of the tail water to be treated is used as a solvent of the alkalization agent, by collecting the pH and water level information of the alkalization dissolving tank 101, the alkalization dissolving control box 104 is used to accurately control the alkalization agent feeding mechanism 106 to add the alkalization agent to the alkalization dissolving tank 101 as needed, so that the dissolution of the alkalization agent in the alkalization dissolving tank 101 obtains the alkaline solution with a specific pH value; the alkaline solution is discharged from the alkalization dissolving tank 101 by using the alkalization dissolving control box 104, and is stored in the alkaline solution storage tank 102; by collecting the pH and water level information of the pH adjustment reaction tank 103, the pH adjustment and alkaline solution storage control box 105 is used to add the alkaline solution to the pH adjustment reaction tank 103, and the remaining part of the tail water is accurately controlled to be mixed with the alkaline solution in a certain proportion; the pH and water level information in the pH adjustment reaction tank 103 are collected in real time, and the tail water treatment is monitored to reach the standard and then discharged, so as to realize the alkalization adjustment treatment of all the tail water.

[0048] In the processing process of the embodiment method, the control system can be used to adjust the stirring mechanism in the tank, so as to accelerate the mixing of the alkaline solution and the tail water, improve the timeliness of information collection and the accuracy of control. The modularization setting of the multi-stage reaction tank can not only better control the reaction time and reaction conditions, but also ensure that the pH value of the tail water remains stable and improve the water quality. At the same time, during or after the processing process, the alkalization dissolving tank 101, the alkaline solution storage tank 102 and the pH adjustment reaction tank 103 are provided with manholes at the bottom, so that the tank devices can be cleaned and maintained.

[0049] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for tail water alkalization adjustment based on multi-stage reaction tank, using a tail water alkalization adjustment device based on multi-stage reaction tank, characterized in that: The device comprises a tail water input pipe, an alkalization dissolving tank, an alkali storage tank, a pH adjustment reaction tank and a control system. The tail water input pipe respectively inputs the tail water to be treated into the alkalization dissolving tank and the pH adjustment reaction tank; the top of the alkalization dissolving tank is provided with an alkalization agent feeding mechanism, and the inside of the alkalization dissolving tank is provided with an alkalization stirring mechanism; the alkali storage tank is connected with the alkalization dissolving tank through an alkali storage pipe; the pH adjustment reaction tank is connected with the alkali storage tank through an alkali input pipe, and the inside of the pH adjustment reaction tank is provided with a pH adjustment stirring mechanism; the control system comprises an alkalization dissolving control box and a pH adjustment and alkali storage control box, and further comprises sensors arranged in the alkalization dissolving tank, the alkali storage tank and the pH adjustment reaction tank, and water pumps and electronic valves arranged in the tail water input pipe, the alkali storage pipe and the alkali input pipe. The alkalization dissolving tank is provided with an alkalization dissolving tank top cover and an alkalization dissolving tank body; the alkalization dissolving tank top cover is connected with a pH sensor interface and a water level sensor interface through openings. The pH adjustment reaction tank comprises a pH adjustment reaction tank top cover and a pH adjustment reaction tank body, and the pH adjustment reaction tank top cover is connected with a pH sensor interface and a water level sensor interface through openings. The alkalization dissolving control box is used for controlling the tail water and the feeding of the alkalization agent, the movement of the alkalization stirring mechanism and the discharge of the alkali in the alkalization dissolving tank; the pH adjustment and alkali storage control box is used for controlling the addition of the alkali into the pH adjustment reaction tank. The tail water alkalization adjustment method comprises the following steps: the tail water to be treated is respectively input into the alkalization dissolving tank and the pH adjustment reaction tank through the tail water input pipe; part of the tail water to be treated is used as a solvent of the alkalization agent, the pH and water level information of the alkalization dissolving tank is collected, the alkalization dissolving control box is used to control the dissolution degree of the alkalization agent in the alkalization dissolving tank to obtain the alkali; the alkali is stored in the alkali storage tank, the pH and water level information of the pH adjustment reaction tank is collected, the pH adjustment and alkali storage control box is used to add the alkali into the pH adjustment reaction tank, the alkali is mixed with the remaining part of the tail water again, and the tail water is discharged after treatment to reach the standard, so that the alkalization adjustment treatment of all the tail water is realized.

2. The method for tail water alkalization adjustment based on multi-stage reaction tank according to claim 1, characterized in that: The water inlet end of the tail water input pipe is provided with two groups of input pipes, and the two groups of input pipes are provided with a connecting pipe, electronic valves, water pumps and one-way valves.

3. The method according to claim 1, wherein the method is characterized by: The tail water input pipe, the alkali storage pipe and the alkali input pipe respectively comprise at least two groups of parallel pipes, each group of parallel pipes is provided with at least one water pump and two electronic valves before and after the water pump.

4. The method for tail water alkalization adjustment based on multi-stage reaction tank according to claim 1, characterized in that: The alkalization dissolving tank top cover is further provided with an alkalization agent input port, and the alkalization agent feeding mechanism is arranged in the alkalization agent input port; the alkalization dissolving tank body is a hollow tubular cylinder, and the bottom and the cylindrical surface of the alkalization dissolving tank body are provided with three openings, which are respectively an alkalization dissolving tank maintenance drainage opening, an alkalization dissolving tank tail water inlet and an alkalization dissolving tank alkali outlet.

5. The method for tail water alkalization adjustment based on multi-stage reaction tank according to claim 4, characterized in that: The alkalization agent feeding mechanism comprises a feeding motor, a spiral feeding hopper and a shell, the spiral feeding hopper is arranged vertically to the shell with an upward opening, the feeding motor is arranged in the shell and located at the bottom of the spiral feeding hopper, and the propulsion direction of the feeding motor is towards the alkalization agent input port.

6. The method of claim 1, wherein the method is a multi-stage reactor based tailwater alkalization adjustment method. The alkali stirring mechanism is composed of an alkali stirrer, an alkali stirring motor and a dissolving tank belt; the alkali stirrer is arranged inside the alkali dissolving tank, and the alkali stirring motor drives the alkali stirrer through the dissolving tank belt; the pH adjusting stirring mechanism is composed of a reaction tank stirrer, a reaction tank stirring motor and a reaction tank belt; the reaction tank stirrer is arranged inside the pH adjusting reaction tank, and the reaction tank stirring motor drives the reaction tank stirrer through the reaction tank belt.

7. The method of claim 1, wherein the method is a multi-stage reactor based tailwater alkalization method. The tank body bottom and side of the pH adjusting reaction tank are provided with a pH adjusting reaction tank maintenance drainage port, a pH adjusting reaction tank tail water inlet, a pH adjusting reaction tank lye inlet and a pH adjusting reaction tank standard tail water outlet; and the pH adjusting reaction tank top cover is further provided with a manual maintenance port.

8. The method of claim 1, wherein the method is a multi-stage reactor based tailwater alkalization adjustment method. The alkali dissolving control box and the pH adjusting and lye storage control box comprise operation buttons and display screens.

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