A pH regulating device and method for river water

Abstract

The invention belongs to the technical field of wastewater treatment equipment, and specifically is a river water pH regulating device and method thereof, S1: collecting river water through a water collection tank and performing sedimentation and filtration treatment, and at the same time, detecting the pH of the river water; S2: transporting the polluted river water to a treatment tank according to the pH detection result of the river water; S3: adjusting the pH value of the river water entering the treatment tank through an electrolysis method or a neutralization method; S4: the river water with a neutral pH after treatment leaves the treatment tank and enters a subsequent treatment step; the invention separates the polluted river water through an acid-base separator, so that the acidic river water enters an acid electrolysis tank or a neutralization tank, and the alkaline river water enters an alkaline electrolysis tank or a neutralization tank, and then, the electrolysis method or the neutralization method is used to adjust the pH of the acidic or alkaline river water respectively, and after the adjustment is completed, the discharged river water is merged together for subsequent treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment equipment, in particular to a river water pH regulating device and a method thereof. Background Art

[0002] When utilizing river water, it is purified through purification equipment to remove impurities such as sludge, branches, discarded garbage, and suspended matter in the water. At the same time, due to pollution, the water quality of river water may be acidic or alkaline, and the pH value of river water needs to be adjusted to ensure that the pH of the purified and adjusted river water is neutral, so as to avoid affecting the utilization of river water.

[0003] The regulating device in the prior art usually adjusts the pH of river water by adding a neutralizing agent, and then quickly diffuses and mixes the neutralizing agent into all the river water in the device by stirring, so that the pH of the river water is neutral and meets the use requirements. However, since the neutralizing agent is added subsequently and then stirred, the operation process often results in low regulation efficiency due to uneven mixing, and causes large changes in the pH value of the local river water in the device, which can easily cause misjudgment of the pH detection sensor, resulting in poor regulation effect of the pH value of the river water, affecting the subsequent use of the river water. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, the neutralizer is directly distributed to different positions in the pool body through a distribution pipe, and the neutralizer and river water are fully stirred and mixed by a stirring rod, a baffle and the discharged gas to ensure the efficiency and effect of regulating the pH value of the river water. The present invention proposes a river water pH regulating device and a method thereof.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the pH regulating device for river water of the present invention comprises a pool body, the pool body is provided with a water inlet and a water outlet from bottom to top, a motor is provided at the upper end of the pool body, a rotating shaft is provided in the pool body, a stirring rod is provided on the rotating shaft, the motor drives the stirring rod to rotate, a pH sensor is provided on the inner wall of the pool body, and a slag discharge port is provided at the bottom of the pool body;

[0006] A delivery pipe is installed on the outer wall of the cell body, and an addition pipe is installed in the cell body. The delivery pipe delivers the neutralizer to the addition pipe. The addition pipes are arranged in multiple groups from bottom to top. Distribution pipes are installed on the addition pipes along the circumferential direction. The distribution pipes are distributed along the radius direction of the cell body, and the lengths of the distribution pipes are different.

[0007] The distribution pipe comprises an outer shell pipe and an inner pipe. The inner pipes in each distribution pipe in the pool body have the same length. A pressure valve and a solenoid valve are installed at the connection between the delivery pipe and the addition pipe.

[0008] Preferably, a plurality of groups of stirring rods are arranged on the rotating shaft, and stirring rods are installed between adjacent adding pipes;

[0009] There is an angle between the projections of the adding pipes on the horizontal plane.

[0010] Preferably, the rotating shaft and the stirring rod are provided with interconnected cavities, the stirring rod is provided with air holes, and the outlet direction of the air holes on the stirring rod between the adding tubes faces the bottom surface of the tank body;

[0011] An air inlet and an air outlet are installed at the upper end of the pool body, and the air inlet is connected to the cavity in the rotating shaft through a connecting ring.

[0012] Preferably, the housing tube is made of elastic material;

[0013] A blocking rod is installed at the outlet of the distribution pipe. The cross section of the blocking rod is semicircular, and the surface of the blocking rod facing the distribution pipe is an arc surface.

[0014] Preferably, the blocking rod is eccentrically installed at the outlet of the distribution pipe.

[0015] Preferably, a baffle is installed at the upper end of the pool body, a rectangular through hole is opened on the baffle, and the baffle is located below the water outlet.

[0016] Preferably, the baffle comprises an upper plate and a lower plate, the upper plate is mounted on the inner wall of the pool body, the lower plate is mounted on the rotating shaft, an angle is formed between the through holes on the upper plate and the lower plate and the vertical direction, and the inclination directions of the through holes on the upper plate and the lower plate are opposite;

[0017] The through holes on the upper plate and the lower plate are not aligned with each other.

[0018] Preferably, the adjustment method is applicable to any one of the above-mentioned river water pH adjustment devices, and the method comprises the following steps:

[0019] S1: The river water is collected and filtered through the water collection tank to remove large impurities in the river water. At the same time, the pH value of the river water is tested. When the pH value of the river water is neutral, the water collection tank opens the outlet valve to transport the river water for collection or utilization;

[0020] S2: According to the pH test results of river water, when the acidity and alkalinity of river water change greatly, the water collection tank closes the outlet valve and transports the polluted river water to the treatment tank for treatment;

[0021] S3: Adjusting the pH value of the river water entering the treatment tank by electrolysis or neutralization;

[0022] S4: The treated river water with a neutral pH leaves the treatment tank and enters the subsequent treatment steps; the river water is flocculated, precipitated, filtered, and collected or utilized after pH adjustment;

[0023] Wherein, when the electrolysis method is applied to treat the polluted river water in step S3, the polluted river water is separated by an acid-base separator, so that the acidic river water enters the acid electrolysis cell and the alkaline river water enters the alkaline electrolysis cell for electrolysis treatment;

[0024] When the neutralization method is used to treat the polluted river water in step S3, the polluted river water is separated by an acid-base separator, so that the acidic river water enters the acidic neutralization tank and the alkaline river water enters the alkaline neutralization tank;

[0025] Among them, in the step S4, the river water after the pH adjustment is merged together and then processed centrally.

[0026] Preferably, the method for adjusting the pH of river water by neutralization comprises the following steps:

[0027] A1: The river water to be regulated is fed into the tank body 1 of the regulating device from the water inlet 12, and then the pH value of the river water is detected by the pH sensor 18;

[0028] A2: According to the detected pH value data of the river water, the controller controls the motor 11 to operate, and the controller controls the electromagnetic valve at the connection between the delivery pipe 17 and the addition pipe 3 to open, so as to deliver the neutralizer into the tank body 1 to adjust the pH value of the river water; the controller will adjust the number of the addition pipes 3 with the electromagnetic valves opened according to the detected pH value, so as to control the amount of the neutralizer added per unit time;

[0029] A3: The controller controls the external gas source to deliver gas into the cell body 1, so that gas is blown out on the stirring rod 21 to form bubbles for stirring and mixing, thereby improving the efficiency and effect of pH regulation;

[0030] A4: After the river water level in the pool body 1 passes through the baffle 4, the river water is discharged from the pool body 1 through the outlet 13, and the regulated river water enters the subsequent process for treatment;

[0031] Wherein, the neutralizing agent is sodium hydroxide liquid or hydrochloric acid liquid, the sodium hydroxide liquid is used to neutralize acidic river water, and the hydrochloric acid liquid is used to neutralize alkaline river water.

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The device and method for adjusting the pH of river water described in the present invention, by arranging a stirring rod, an addition pipe, a distribution pipe, an outer shell pipe and an inner pipe, enables the neutralizer to be added to areas of different heights and positions in the pool at the same time, and the neutralizer and the river water are also stirred by the stirring rod, thereby fully accelerating and promoting the mixing and neutralization between the neutralizer and the river water, ensuring the uniformity, rapidity and accuracy of the pH adjustment, and making the pH adjustment efficiency and effect of the river water good.

[0034] 2. The device and method for adjusting the pH of river water described in the present invention, by setting an air inlet, a stirring rod, an air hole, a baffle, an upper plate, a lower plate and a through hole, allows the blown gas to be distributed in areas of different heights and positions in the pool body, further stirring and mixing the neutralizer and the river water, so that the pH adjustment has good uniformity, rapidity and accuracy. At the same time, the bubbles generated by the blown gas are blocked and intercepted, and the river water is stirred and mixed for the last time before being discharged, thereby improving the efficiency and effect of pH adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 It is a flowchart of the pH adjustment method of the present invention;

[0037] Figure 2 It is a flowchart of the neutralization method in the pH adjustment method of the present invention;

[0038] Figure 3 It is a schematic diagram of the electrolysis method in the pH adjustment method of the present invention;

[0039] Figure 4 It is a schematic diagram of the neutralization method in the pH adjustment method of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the regulating device of the present invention;

[0041] Figure 6 is a cross-sectional view of the regulating device of the present invention;

[0042] Figure 7 It is a schematic diagram of the structure of the baffle and the stirring rod in the regulating device of the present invention;

[0043] Figure 8 It is a schematic diagram of the structure of the adding pipe and the distribution pipe in the regulating device of the present invention;

[0044] Fig. 9 is a partial cross-sectional view of a distribution pipe in the regulating device of the present invention;

[0045] Fig.10 yes Figure 7 A partial enlarged view of the middle part;

[0046] Fig.11 yes Figure 8 A partial enlarged view of point B in the middle;

[0047] In the figure: pool body 1, motor 11, water inlet 12, water outlet 13, air inlet 14, air outlet 15, slag discharge port 16, conveying pipe 17, pH sensor 18, rotating shaft 2, stirring rod 21, blowing hole 22, adding pipe 3, distribution pipe 31, outer shell pipe 311, inner pipe 312, blocking rod 32, baffle 4, upper plate 41, lower plate 42, through hole 43. DETAILED DESCRIPTION

[0048] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0049] like Figures 1 to 11 As shown, a river water pH regulating device of the present invention comprises a pool body 1, the pool body 1 is provided with a water inlet 12 and a water outlet 13 from bottom to top, a motor 11 is provided at the upper end of the pool body 1, a rotating shaft 2 is provided in the pool body 1, a stirring rod 21 is provided on the rotating shaft 2, the motor 11 drives the stirring rod 21 to rotate, a pH sensor 18 is provided on the inner wall of the pool body 1, and a slag discharge port 16 is provided at the bottom of the pool body 1;

[0050] A delivery pipe 17 is installed on the outer wall of the cell body 1, and an addition pipe 3 is installed in the cell body 1. The delivery pipe 17 delivers the neutralizer to the addition pipe 3. The addition pipe 3 is provided with multiple groups from bottom to top. A distribution pipe 31 is installed on the addition pipe 3 along the circumferential direction. The distribution pipe 31 is distributed along the radial direction of the cell body 1, and the lengths of the distribution pipes 31 are different.

[0051] The distribution pipe 31 includes an outer shell pipe 311 and an inner pipe 312. The inner pipes 312 in each distribution pipe 31 in the cell body 1 are of the same length. A pressure valve and a solenoid valve are installed at the connection between the delivery pipe 17 and the addition pipe 3.

[0052] When working, the river water is sent into the pool body 1 from the water inlet 12, so that the liquid level of the river water in the pool body 1 gradually rises, until the river water is discharged from the water outlet 13 and enters the subsequent treatment process;

[0053] At the same time, when the river water enters the pool body 1, the controller controls the motor 11 to operate, thereby driving the rotating shaft 2 and the stirring rod 21 to rotate, stirring the river water in the pool body 1. At the same time, the neutralizer for adjusting the pH value is sent to the adding pipe 3 through the delivery pipe 17, and is added and spread into the pool body 1 from the distribution pipe 31, so that the neutralizer and the river water are quickly stirred and mixed, thereby promoting the efficiency and effect of pH adjustment of the river water;

[0054] At the same time, since there are multiple groups of adding pipes 3, the distribution pipes 31 are distributed in the circumferential direction, and the lengths of the distribution pipes 31 are different, the outlets of the distribution pipes 31 are distributed throughout the areas at different heights and positions in the tank body 1. Therefore, when adding the neutralizer, the neutralizer can be added and mixed into various areas in the tank body 1 through the distribution pipes 31 at the same time, thereby shortening the time required for the neutralizer to mix with the river water, accelerating the mixing speed, and improving the effect of rapid mixing, thereby improving the effect of pH adjustment of the river water, so that the added neutralizer can be quickly and evenly distributed into the river water without stirring, thereby avoiding the situation in which the neutralizer enters the tank body 1 at a single position or area and the neutralizer needs to be stirred before it can be fully mixed and neutralized with the river water.

[0055] At the same time, since the inner tubes 312 in the distribution pipes 31 have the same length, even if the size of the tank body 1 of the adjustment device is relatively large, the neutralizer can be discharged from the outlets of each distribution pipe 31 at the same time, and the speed of the neutralizer discharge is also the same, ensuring that the neutralizer is relatively evenly distributed in the tank body 1, and avoiding the time difference when the neutralizer is discharged into the tank body 1, that is, the neutralizer in one area is discharged first and the neutralizer in another area is discharged later, or the neutralizer in one area is discharged first and the discharge amount is large, and the neutralizer in another area is discharged later and the discharge amount is relatively small, resulting in poor pH adjustment effect of river water in a local area of ​​the tank body 1, and the occurrence of over-acidity or over-alkalinity, causing subsequent equipment and pipeline corrosion, affecting the normal operation of the adjustment device;

[0056] At the same time, since a pressure valve and a solenoid valve are installed at the connection between the delivery pipe 17 and the addition pipe 3, and multiple groups of pH sensors 18 are installed on the pool body 1, when adjusting the pH of the river water, the controller will change the pH adjustment of the river water in the pool body 1 according to the data detected in real time by the pH sensor 18. For example, when the pH value of the river water at a certain height in the pool body 1 is already neutral and no additional adjustment is required, the controller will control the solenoid valve on the addition pipe 3 at and above the height to be closed, thereby reducing meaningless adjustments, ensuring that the neutralizer is fully used for neutralization, and avoiding excessive addition of the neutralizer, resulting in poor pH adjustment effect of the river water. At the same time, when the pH value of the river water deviates from neutrality by a large amount, the controller will increase the number of opened solenoid valves according to the data detected by the pH sensor 18, thereby increasing the number of addition pipes 3 and distribution pipes 31 in working state in the pool body 1, accelerating the efficiency of pH adjustment, and improving the uniformity and accuracy of pH adjustment, thereby ensuring that the neutralizer can just adjust the pH value of the river water to neutrality, and avoiding the neutralizer from not being able to fully react and polluting the environment after discharge.

[0057] As an embodiment of the present invention, a plurality of stirring rods 21 are provided on the rotating shaft 2, and stirring rods 21 are installed between adjacent addition pipes 3;

[0058] There is an angle between the projections of the adding pipe 3 on the horizontal plane;

[0059] Since multiple groups of addition pipes 3 and stirring rods 21 are provided, and the stirring rods 21 are also provided between two adjacent addition pipes 3, when the neutralizer is discharged from the distribution pipe 31 on the addition pipe 3 and evenly distributed in the tank body 1, the stirring rods 21 will also rotate with the movement of the motor 11, stirring and mixing the neutralizer and the river water, promoting the mutual mixing and reaction between the neutralizer and the river water, making the pH value of the river water neutral, thereby avoiding affecting the normal operation of the regulating device;

[0060] At the same time, since the stirring rod 21 is located between two adjacent addition tubes 3, the stirring rod 21 is relatively close to the added neutralizer, and then when the stirring rod 21 is driven to rotate, the stirring rod 21 can easily stir the neutralizer and the river water, promote rapid mixing and neutralization between the two, improve the uniformity and rapidity of pH adjustment of the river water, and enhance the accuracy of pH adjustment. At the same time, the position between the addition tubes 3 is adjusted so that there is an angle between the projections of the addition tubes 3 on the horizontal plane, which will further promote the uniform distribution of the neutralizer discharged from the distribution pipe 31 in the tank body 1, accelerate the mixing between the neutralizer and the river water, improve the efficiency of pH adjustment, and ensure the uniformity, rapidity and accuracy of pH adjustment.

[0061] As an embodiment of the present invention, the rotating shaft 2 and the stirring rod 21 are provided with interconnected cavities, the stirring rod 21 is provided with a blowing hole 22, and the outlet direction of the blowing hole 22 on the stirring rod 21 between the adding pipes 3 faces the bottom surface of the tank body 1;

[0062] The upper end of the cell body 1 is provided with an air inlet 14 and an air outlet 15, and the air inlet 14 is connected to the cavity in the rotating shaft 2 through a connecting ring;

[0063] When the pH value of the river water is adjusted by adding the neutralizer, the controller controls the external air source to send gas into the pool body 1 through the air inlet 14. The sent gas will enter the cavity in the rotating shaft 2 through the connecting ring from the air inlet 14, and then be discharged from the blowing hole 22 on the stirring rod 21. The blown gas will stir the river water in the pool body 1 and the added neutralizer, promote the mixing and neutralization between the two, ensure the uniformity, rapidity and accuracy of the pH adjustment, and improve the efficiency and effect of the pH adjustment.

[0064] At the same time, since the stirring rod 21 rotates with the rotating shaft 2 in the pool body 1, the gas blown out of the stirring rod 21 is evenly distributed in various places in the pool body 1, improving the effect of the gas stirring the river water and the neutralizer, thereby ensuring the efficiency and effect of pH adjustment;

[0065] At the same time, since the outlet direction of the air hole 22 is toward the bottom surface of the pool body 1, and a stirring rod 21 is arranged between two adjacent adding pipes 3, the gas blown out of the air hole 22 will quickly and directly contact the added neutralizer and river water, thereby accelerating the mixing and neutralization efficiency between the neutralizer and the river water, improving the effect of pH adjustment, and ensuring the uniformity, rapidity and accuracy of pH adjustment. At the same time, since there are multiple groups of stirring rods 21 from bottom to top, the blown gas will be evenly distributed at various heights in the pool body 1, fully stirring the river water in the pool body 1, promoting uniform mixing and sufficient neutralization between the neutralizer and the river water, avoiding poor local pH adjustment effect, over-acidity or over-alkalinity in the pool body 1, and affecting the normal operation of the adjustment device.

[0066] As an embodiment of the present invention, the housing tube 311 is made of elastic material;

[0067] A blocking rod 32 is installed at the outlet of the distribution pipe 31. The cross section of the blocking rod 32 is semicircular, and the surface of the blocking rod 32 facing the distribution pipe 31 is an arc surface.

[0068] Since the outer shell tube 311 on the distribution pipe 31 is made of elastic material, such as using a spring or an elastic tube to be sleeved on the outside of the inner tube 312 to serve as the outer shell tube 311, the distribution pipe 31 can vibrate and shake in the pool body 1. When the stirring rod 21 and the blown gas stir the river water in the pool body 1, the river water in the pool body 1 will fluctuate, thereby driving the relatively long distribution pipe 31 to shake and vibrate in the pool body 1, causing the outlet position of the distribution pipe 31 to swing and shake, so that the neutralizer discharged from the outlet of the distribution pipe 31 is relatively dispersed, and the neutralizer can be relatively quickly mixed into the river water, thereby improving the efficiency of pH adjustment and ensuring the uniformity, rapidity and accuracy of pH adjustment. At the same time, through the swing of the outlet position on the distribution pipe 31, the added neutralizer is promoted to be relatively dispersed, and it is avoided that the neutralizer is relatively aggregated at a local position in the pool body 1 after addition and is not easy to diffuse, which affects the efficiency and effect of pH adjustment, and affects the normal operation of the adjustment device;

[0069] At the same time, a blocking rod 32 is installed at the outlet of the distribution pipe 31. With the cooperation of the shape and installation position of the distribution pipe 31, the neutralizer discharged from the outlet of the distribution pipe 31 is further dispersed, promoting rapid mixing and neutralization between the neutralizer and river water, and improving the efficiency and effect of pH adjustment.

[0070] As an embodiment of the present invention, the blocking rod 32 is eccentrically installed at the outlet of the distribution pipe 31;

[0071] When the neutralizer is discharged from the outlet of the distribution pipe 31, the neutralizer will impact the eccentrically installed blocking rod 32, thereby promoting the distribution pipe 31 to swing and shake, making the discharged neutralizer relatively dispersed, accelerating the mixing and neutralization between the neutralizer and the river water, and improving the efficiency and effect of pH adjustment.

[0072] As an embodiment of the present invention, a baffle plate 4 is installed at the upper end of the pool body 1, and a rectangular through hole 43 is opened on the baffle plate 4. The baffle plate 4 is located below the water outlet 13;

[0073] After the river water enters the tank body 1 from the water inlet 12 and the neutralizer enters the tank body 1 from the addition pipe 3 and the distribution pipe 31, the neutralizer and the river water are mixed and neutralized with each other under the action of the stirring rod 21 and the bubbles blown out. After that, the liquid level of the river water after pH adjustment will continue to rise in the tank body 1 until the river water passes through the through hole 43 upward and reaches the top of the baffle 4. After that, the river water will be discharged from the regulating device from the water outlet 13. In this process, since the tank body 1 is relatively closed to the outside world and the inside of the tank body 1 will continue to The river water is introduced from the water inlet 12 and the gas is introduced from the gas inlet 14, so that the pressure in the pool body 1 is relatively large compared to the outside. Therefore, in combination with the rectangular through hole 43 with relatively small gaps on the baffle 4, the river water reaching the upper end of the pool body 1 will be ejected from the through hole 43 relatively quickly, that is, the river water is disturbed and mixed at the rectangular through hole 43, generating turbulence, promoting the re-mixing of the river water, improving the efficiency and effect of pH adjustment of the river water, and ensuring the uniformity, rapidity and accuracy of pH adjustment;

[0074] At the same time, when the gas blown out from the blowing hole 22 moves from the bottom to the top of the pool body 1 again, the bubbles formed by the blown gas will be blocked and intercepted by the baffle 4, thereby producing a defoaming effect, preventing the pollution in the river water from combining with the bubbles to produce foam, affecting the normal operation of the regulating device. At the same time, the gas carried by the bubbles will also pass through the through hole 43, further stirring and disturbing the river water passing through the through hole 43, thereby improving the uniformity, rapidity and accuracy of the pH adjustment of the river water. At the same time, the gas reaching the space above the baffle 4 will be discharged from the air outlet 15, and after being treated, it will be discharged into the environment or directly collected for recycling to avoid air pollution.

[0075] As an embodiment of the present invention, the baffle 4 includes an upper plate 41 and a lower plate 42, the upper plate 41 is mounted on the inner wall of the pool body 1, and the lower plate 42 is mounted on the rotating shaft 2, and there is an angle between the through holes 43 on the upper plate 41 and the lower plate 42 and the vertical direction, and the inclination directions of the through holes 43 on the upper plate 41 and the lower plate 42 are opposite;

[0076] The through holes 43 on the upper plate 41 and the lower plate 42 are not aligned with each other;

[0077] When the rotating shaft 2 rotates, the lower plate 42 will be driven to rotate synchronously, and the upper plate 41 is fixedly installed on the inner wall of the tank body 1, so that the upper plate 41 and the lower plate 42 rotate relative to each other, so that the river water passing through the through holes 43 on the upper plate 41 and the lower plate 42 will be sheared and stirred, further promoting the uniform mixing and neutralization between the river water and the neutralizer, ensuring the pH adjustment efficiency and effect. At the same time, because the through holes 43 on the upper plate 41 and the lower plate 42 are inclined in opposite directions and the through holes 43 are not aligned with each other, when the river water passes through the through holes 43 on the upper plate 41 and the lower plate 42, the river water between the upper plate 41 and the lower plate 42 will impact and shear each other, so that the river water and the neutralizer are mixed evenly, ensuring that the pH adjustment of the river water is uniform, fast and accurate, and improving the pH adjustment effect;

[0078] At the same time, since an upper plate 41 and a lower plate 42 are installed at the upper end of the pool body 1, some impurities carried in the river water entering the pool body 1 are intercepted by the baffle 4. In conjunction with the slag discharge port 16 installed at the bottom of the pool body 1, the impurities accumulated and intercepted in the pool body 1 can be discharged from the slag discharge port 16 to the regulating device, thereby avoiding the accumulation of impurities in the pool body 1 and affecting the normal operation of the regulating device.

[0079] As an embodiment of the present invention, the adjustment method is applicable to a river water pH adjustment device as described in any one of the above, and the method comprises the following steps:

[0080] S1: The river water is collected and filtered through the water collection tank to remove large impurities in the river water. At the same time, the pH value of the river water is tested. When the pH value of the river water is neutral, the water collection tank opens the outlet valve to transport the river water for collection or utilization;

[0081] S2: According to the pH test results of river water, when the acidity and alkalinity of river water change greatly, the water collection tank closes the outlet valve and transports the polluted river water to the treatment tank for treatment;

[0082] S3: Adjusting the pH value of the river water entering the treatment tank by electrolysis or neutralization;

[0083] S4: The treated river water with a neutral pH leaves the treatment tank and enters the subsequent treatment steps; the river water is flocculated, precipitated, filtered, and collected or utilized after pH adjustment;

[0084] Wherein, when the electrolysis method is applied to treat the polluted river water in step S3, the polluted river water is separated by an acid-base separator, so that the acidic river water enters the acid electrolysis cell and the alkaline river water enters the alkaline electrolysis cell for electrolysis treatment;

[0085] When the neutralization method is used to treat the polluted river water in step S3, the polluted river water is separated by an acid-base separator, so that the acidic river water enters the acidic neutralization tank and the alkaline river water enters the alkaline neutralization tank;

[0086] Wherein, in the step S4, the river water after pH adjustment is merged together and then processed centrally;

[0087] When the pH value of river water is neutral, the river water in the water collection tank can be directly discharged from the outlet of the water collection tank without adjusting the pH value. The river water is collected in a water storage tank for storage or directly sent to a generator set for power generation. At the same time, when the pH value of the river water changes significantly, making the river water acidic or alkaline, the valve at the outlet of the water collection tank is closed and the valve of the acid-base separator is opened. According to the pH test results, the polluted river water is separated through the acid-base separator, so that the acidic river water enters the acid electrolysis cell or the acid neutralization cell, and the alkaline river water enters the alkaline electrolysis cell or the alkaline neutralization cell. Finally, the pH value of the river water is adjusted according to the selected pH adjustment method: the electrolysis method is used to adjust the pH value of the river water in the acid electrolysis cell and the alkaline electrolysis cell, and the neutralization method is used to adjust the pH value of the river water in the acid neutralization cell and the alkaline neutralization cell. At the same time, after the pH value of the river water is adjusted, the river water discharged from the acid electrolysis cell or the acid neutralization cell, the alkaline electrolysis cell or the alkaline neutralization cell is combined together and sent to the treatment tank. After flocculation, sedimentation and filtration treatment of the river water in the treatment tank, the river water is sent to the water storage tank for storage and standby or directly sent to the generator set for power generation.

[0088] As an embodiment of the present invention, the method for adjusting the pH of river water by neutralization method comprises the following steps:

[0089] A1: The river water to be regulated is fed into the tank body 1 of the regulating device from the water inlet 12, and then the pH value of the river water is detected by the pH sensor 18;

[0090] A2: According to the detected pH value data of the river water, the controller controls the motor 11 to operate, and the controller controls the electromagnetic valve at the connection between the delivery pipe 17 and the addition pipe 3 to open, so as to deliver the neutralizer into the tank body 1 to adjust the pH value of the river water; the controller will adjust the number of the addition pipes 3 with the electromagnetic valves opened according to the detected pH value, so as to control the amount of the neutralizer added per unit time;

[0091] A3: The controller controls the external gas source to deliver gas into the cell body 1, so that gas is blown out on the stirring rod 21 to form bubbles for stirring and mixing, thereby improving the efficiency and effect of pH regulation;

[0092] A4: After the river water level in the pool body 1 passes through the baffle 4, the river water is discharged from the pool body 1 through the outlet 13, and the regulated river water enters the subsequent process for treatment;

[0093] Wherein, the neutralizing agent is sodium hydroxide liquid or hydrochloric acid liquid, the sodium hydroxide liquid is used to neutralize acidic river water, and the hydrochloric acid liquid is used to neutralize alkaline river water;

[0094] The neutralizer is fully distributed to various areas at different heights and positions in the tank body 1 of the regulating device, so that the neutralizer directly and fully contacts and mixes with the river water to be regulated, so that the neutralizer and the river water are mutually neutralized, and the pH of the river water is adjusted to ensure that the pH of the river water is neutral, thereby mixing and neutralizing the neutralizer and the river water once and for all, reducing the influence of uneven distribution of the neutralizer and poor stirring on the neutralization efficiency and effect of the river water, and avoiding as much as possible that the local pH is too high or too low, which affects the pH adjustment effect of the river water;

[0095] At the same time, in the process of adjusting pH by neutralization method, the river water and the neutralizer are mixed at various places in the pool body and multiple times by stirring, blowing gas, setting baffles with through holes, so as to improve the efficiency and effect of pH adjustment;

[0096] Meanwhile, the neutralizing agent is common sodium hydroxide liquid and other commercially available alkaline liquids that can be used in liquid form, or the neutralizing agent is common hydrochloric acid liquid and other commercially available acidic liquids that can be used in liquid form.

[0097] The specific workflow is as follows:

[0098] When working, the river water is sent into the pool body 1 from the water inlet 12, so that the liquid level of the river water in the pool body 1 gradually rises, until the river water is discharged from the water outlet 13 and enters the subsequent treatment process;

[0099] At the same time, when the river water enters the pool body 1, the controller controls the motor 11 to operate, thereby driving the rotating shaft 2 and the stirring rod 21 to rotate, stirring the river water, and adding the neutralizer into the pool body 1 through the delivery pipe 17, the adding pipe 3, and the distribution pipe 31;

[0100] At the same time, since there are multiple groups of adding pipes 3, the distribution pipes 31 are distributed in the circumferential direction, and the lengths of the distribution pipes 31 are different, the outlets of the distribution pipes 31 are distributed in areas of different heights and positions in the cell body 1, so that when adding the neutralizer, the neutralizer can be added and mixed to various areas in the cell body 1 through the distribution pipes 31 at the same time;

[0101] At the same time, since the inner tubes 312 in the distribution pipes 31 have the same length, even if the size of the tank body 1 of the adjustment device is relatively large, the neutralizer can be discharged from the outlets of each distribution pipe 31 at the same time, and the speed of the neutralizer discharge is also the same, ensuring that the neutralizer is relatively evenly distributed in the tank body 1, and avoiding the time difference when the neutralizer is discharged into the tank body 1, that is, the neutralizer in one area is discharged first and the neutralizer in another area is discharged later, or the neutralizer in one area is discharged first and the discharge amount is large, and the neutralizer in another area is discharged later and the discharge amount is relatively small, resulting in poor pH adjustment effect of river water in a local area of ​​the tank body 1, and the occurrence of over-acidity or over-alkalinity;

[0102] At the same time, since a pressure valve and a solenoid valve are installed at the connection between the delivery pipe 17 and the addition pipe 3, and multiple groups of pH sensors 18 are installed on the pool body 1, when adjusting the pH of the river water, the controller will change the pH adjustment of the river water in the pool body 1 according to the data detected in real time by the pH sensor 18. For example, if the pH value of the river water at a certain height in the pool body 1 is already neutral and no additional adjustment is required, the controller will control the solenoid valve on the addition pipe 3 at and above the height to close. At the same time, when the pH value of the river water deviates from neutrality by a large amount, the controller will increase the number of opened solenoid valves according to the data detected by the pH sensor 18, thereby increasing the number of addition pipes 3 and distribution pipes 31 in working state in the pool body 1;

[0103] When the neutralizer is discharged from the distribution pipe 31 on the addition pipe 3 and evenly distributed in the tank body 1, the stirring rod 21 will also rotate with the movement of the motor 11 to stir and mix the neutralizer and the river water;

[0104] At the same time, since the stirring rod 21 is located between two adjacent addition pipes 3, the stirring rod 21 is relatively close to the added neutralizer, and when the stirring rod 21 is driven to rotate, the stirring rod 21 can easily stir the neutralizer and the river water. At the same time, the positions between the addition pipes 3 are adjusted so that there is an angle between the projections of the addition pipes 3 on the horizontal plane, which will further promote the uniform distribution of the neutralizer discharged from the distribution pipe 31 in the tank body 1.

[0105] When the pH value of the river water is adjusted by adding a neutralizer, the controller controls the external air source to feed gas into the pool body 1 through the air inlet 14. The fed gas enters the cavity in the rotating shaft 2 through the connecting ring from the air inlet 14, and then is discharged from the blowing hole 22 on the stirring rod 21. The blown gas stirs the river water and the added neutralizer in the pool body 1.

[0106] At the same time, since the stirring rod 21 rotates with the rotating shaft 2 in the pool body 1, the gas blown out of the stirring rod 21 is evenly distributed in various places in the pool body 1;

[0107] At the same time, since the outlet direction of the air hole 22 is toward the bottom surface of the pool body 1, and a stirring rod 21 is provided between two adjacent addition pipes 3, the gas blown out of the air hole 22 will quickly and directly contact the added neutralizer and river water, thereby accelerating the mixing and neutralization efficiency between the neutralizer and the river water. At the same time, since multiple groups of stirring rods 21 are provided from bottom to top, the blown gas will be evenly distributed at various heights in the pool body 1;

[0108] Since the outer shell tube 311 on the distribution pipe 31 is made of elastic material, the relatively long distribution pipe 31 is driven to shake and vibrate in the pool body 1, causing the outlet position of the distribution pipe 31 to swing and shake, so that the neutralizer discharged from the outlet of the distribution pipe 31 is relatively dispersed and the neutralizer can be mixed into the river water relatively quickly;

[0109] At the same time, a blocking rod 32 is installed at the outlet of the distribution pipe 31. Under the coordination of the shape and installation position of the distribution pipe 31, the neutralizer discharged from the outlet of the distribution pipe 31 is further dispersed, promoting rapid mixing and neutralization between the neutralizer and the river water;

[0110] When the neutralizer is discharged from the outlet of the distribution pipe 31, the neutralizer will impact the eccentrically installed blocking rod 32, thereby promoting the distribution pipe 31 to swing and shake, so that the discharged neutralizer is relatively dispersed;

[0111] After the river water enters the tank body 1 from the water inlet 12 and the neutralizer enters the tank body 1 from the addition pipe 3 and the distribution pipe 31, the neutralizer and the river water are mixed and neutralized with each other under the action of the stirring rod 21 and the bubbles blown out. After that, the liquid level of the river water after pH adjustment will continue to rise in the tank body 1 until the river water passes through the through hole 43 upward and reaches the top of the baffle 4. After that, the river water will be discharged from the regulating device at the water outlet 13. In this process, the river water reaching the upper end of the tank body 1 will be ejected from the through hole 43 relatively quickly, that is, the river water is disturbed and mixed at the rectangular through hole 43, generating turbulence, which promotes the mixing of the river water again.

[0112] At the same time, when the gas blown out from the blowing hole 22 moves from the bottom to the top of the pool body 1 again, the bubbles formed by the blown gas will be blocked and intercepted by the baffle 4, thereby producing a defoaming effect. At the same time, the gas carried by the bubbles will also pass through the through hole 43, further stirring and disturbing the river water passing through the through hole 43. At the same time, the gas reaching the space above the baffle 4 will be discharged from the gas outlet 15;

[0113] When the rotating shaft 2 rotates, the lower plate 42 is driven to rotate synchronously, and the upper plate 41 is fixedly installed on the inner wall of the tank body 1, so that the upper plate 41 and the lower plate 42 rotate relative to each other, so that the river water passing through the through holes 43 on the upper plate 41 and the lower plate 42 will be sheared and stirred, further promoting the uniform mixing and neutralization between the river water and the neutralizer. At the same time, because the through holes 43 on the upper plate 41 and the lower plate 42 are inclined in opposite directions and the through holes 43 are not aligned with each other, when the river water passes through the through holes 43 on the upper plate 41 and the lower plate 42, the river water between the upper plate 41 and the lower plate 42 will impact and shear each other, so that the river water and the neutralizer are evenly mixed;

[0114] At the same time, since an upper plate 41 and a lower plate 42 are installed at the upper end of the pool body 1, some impurities carried in the river water entering the pool body 1 are intercepted by the baffle 4, and in conjunction with the slag discharge port 16 installed at the bottom of the pool body 1, the impurities accumulated and intercepted in the pool body 1 can be discharged from the slag discharge port 16 by the regulating device.

[0115] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A river water pH regulating device, comprising a pool body (1), the pool body (1) being provided with a water inlet (12) and a water outlet (13) from bottom to top, a motor (11) being provided at the upper end of the pool body (1), a rotating shaft (2) being provided in the pool body (1), a stirring rod (21) being provided on the rotating shaft (2), the motor (11) driving the stirring rod (21) to rotate, a pH sensor (18) being provided on the inner wall of the pool body (1), and a slag discharge port (16) being provided at the bottom of the pool body (1); Features: A delivery pipe (17) is installed on the outer wall of the tank body (1), and an addition pipe (3) is installed in the tank body (1). The delivery pipe (17) delivers the neutralizer to the addition pipe (3). The addition pipe (3) is provided in multiple groups from bottom to top. The addition pipe (3) is annular. Distribution pipes (31) are installed on the addition pipe (3) along the circumferential direction. The distribution pipes (31) are distributed along the radial direction of the tank body (1), and the lengths of the distribution pipes (31) are different. The distribution pipe (31) comprises an outer shell pipe (311) and an inner pipe (312); the inner pipes (312) in each distribution pipe (31) in the cell body (1) are of the same length; a pressure valve and a solenoid valve are installed at the connection between the delivery pipe (17) and the addition pipe (3); The rotating shaft (2) is provided with a plurality of groups of stirring rods (21), and stirring rods (21) are installed between adjacent addition pipes (3); There is an angle between the projections of the multiple groups of adding pipes (3) on the horizontal plane; The rotating shaft (2) and the stirring rod (21) are provided with interconnected cavities, the stirring rod (21) is provided with an air blowing hole (22), and the outlet direction of the air blowing hole (22) on the stirring rod (21) between the adding pipes (3) faces the bottom surface of the tank body (1); An air inlet (14) and an air outlet (15) are installed at the upper end of the pool body (1), and the air inlet (14) is connected to the cavity in the rotating shaft (2) through a connecting ring; The outer shell tube (311) is made of elastic material; A blocking rod (32) is installed at the outlet of the distribution pipe (31), the cross section of the blocking rod (32) is semicircular, and the surface of the blocking rod (32) facing the distribution pipe (31) is an arc surface; The blocking rod (32) is eccentrically installed at the outlet of the distribution pipe (31); A baffle (4) is installed at the upper end of the pool body (1), a rectangular through hole (43) is opened on the baffle (4), and the baffle (4) is located below the water outlet (13); The baffle (4) comprises an upper plate (41) and a lower plate (42); the upper plate (41) is mounted on the inner wall of the pool body (1); the lower plate (42) is mounted on the rotating shaft (2); the through holes (43) on the upper plate (41) and the through holes (43) on the lower plate (42) are both at an angle to the vertical direction; and the through holes (43) on the upper plate (41) and the through holes (43) on the lower plate (42) are inclined in opposite directions; The through holes (43) on the upper plate (41) and the through holes (43) on the lower plate (42) are not aligned with each other.

Images