A filter press for industrial wastewater treatment and convenient to maintain independently

Abstract

This invention relates to the field of water pollution treatment technology and discloses a filter press for industrial wastewater treatment that is easy to maintain independently. The filter press includes a main body with a multi-stage wastewater treatment mechanism on its side. This mechanism includes a first treatment tank and a second treatment tank. A sludge pipe connects the outlet of the first treatment tank to the inlet of the second treatment tank. The filter press itself is connected to the inlet of the second treatment tank. A first dosing tank and a second dosing tank are connected above the first and second treatment tanks, respectively, for adding different chemicals to the sludge. A stirring mechanism is provided in both the first and second treatment tanks, comprising a first mixing motor, a second mixing motor, and a stirrer. PAC and CPAM can be added to the first and second chemical tanks to perform multi-stage wastewater treatment on the sludge entering the filter press, allowing the sludge to be mixed with different chemicals and thus altering its properties.

Description

Technical Field

[0001] This invention relates to the field of water pollution treatment technology, and more specifically, to a filter press for industrial wastewater treatment that is easy to maintain independently. Background Technology

[0002] In related technologies, a filter press is an intermittently operating pressure filtration device. Its core working principle is to use a special filter medium (usually filter cloth) under certain pressure, so that the liquid phase in the sludge passes through the medium to become filtrate, while the solid particles are trapped to form a filter cake, thus achieving thorough solid-liquid separation. Currently, the most widely used are chamber filter presses and plate and frame filter presses. Their main principle is that a hydraulic system presses dozens or even hundreds of hollow filter plates together to form a series of sealed filter chambers. A high-pressure pump pumps the prepared sludge into all the filter chambers. Under the action of pump pressure, water permeates through the filter cloth and flows out from the drain holes of the filter plates. Solid particles are quickly trapped in the filter chambers. After feeding, some models will introduce high-pressure water or compressed air into the elastic diaphragm inside the filter plates to perform secondary compression on the initially formed filter cake, further reducing the moisture content. During unloading, the hydraulic system releases the filter plates, and the drive device pulls open each filter plate in sequence. The filter cake is then removed by gravity or an auxiliary scraper.

[0003] Because sludge particles and debris can clog the pores of filter cloth, and severe clogging can even cause the filter plates to crack, the maintenance cost of filter presses is high. Existing technologies involve adding chemical agents to the sludge to alter its properties, such as polyaluminum chloride (PAC) and cationic polyacrylamide (CPAM). However, the current technology is not precise enough in its agent addition, and errors in the process can lead to the formation of sticky flocs between the sludge and the agents, clogging the filter cloth. This negatively impacts the treatment of wastewater sludge and accelerates the filter press maintenance cycle, increasing maintenance costs. Therefore, we propose a filter press for industrial wastewater treatment that is easy to maintain independently. Summary of the Invention

[0004] This invention provides a filter press for industrial wastewater treatment that is easy to maintain independently. This filter press for industrial wastewater treatment that is easy to maintain independently can solve the problems mentioned in the background art, such as the insufficient precision of the reagent dosing or even the error in the steps, which leads to the formation of sticky drug flocs between sludge and reagent that clog the filter cloth, thus affecting the treatment of wastewater and sludge, and accelerating the maintenance cycle of the filter press and increasing maintenance costs.

[0005] To achieve the above objectives, this solution provides a filter press for industrial wastewater treatment that is easy to maintain independently. The filter press includes a main body, with a multi-stage wastewater treatment mechanism on its side. This multi-stage mechanism includes a first treatment tank and a second treatment tank. A sludge pipe connects the outlet of the first treatment tank and the inlet of the second treatment tank. The filter press itself connects the second treatment tank to the inlet of the main body. A first feeding tank is connected above the first treatment tank, and a second feeding tank is connected above the second treatment tank for adding different chemicals to the sludge. A stirring mechanism is provided in both the first and second treatment tanks, comprising a first mixing motor, a second mixing motor, and a stirrer.

[0006] Optionally, the first mixing motor and the second mixing motor are respectively disposed on the side of the first processing tank and the second processing tank, and the agitator is rotatably installed in the first processing tank and the second processing tank. The first mixing motor and the second mixing motor are respectively connected to the corresponding agitator.

[0007] Optionally, the first dispensing tank includes a first reagent tank and an outer shell located outside the first reagent tank, and the second dispensing tank includes a second reagent tank and an outer shell located outside the second reagent tank. The two outer shells are of the same specifications, and the outlets of the first reagent tank and the second reagent tank are respectively connected to the inlets of the first processing tank and the second processing tank.

[0008] Optionally, a first support plate is installed on the top of the first treatment tank, and a second support plate is installed on the top of the second treatment tank. Both the first and second support plates are provided with a drug passage hole. Both the first and second drug tanks are provided with a drug dispenser. The outer shell is provided with a curved surface, and the drug dispenser periodically contacts the curved surface.

[0009] Optionally, the dosing device includes a dispensing movable plate, a dispensing fixed plate, a dispensing limiting plate, and a dispensing telescopic spring. The inner walls of the first and second medicine containers have the same number of dispensing ports as the dosing device. The dispensing fixed plate is slidably engaged with the dispensing movable plate. The dispensing movable plate has an external dispensing channel inside, and the dispensing fixed plate has an internal dispensing channel inside. The internal dispensing channel communicates with the dispensing ports. The dispensing telescopic spring is connected to the side of the dispensing movable plate. The number of the drug dispensing limiting plates is the same as the number of the drug dispensing movable plates. The drug dispensing limiting plates are located on the side of the drug dispensing movable plates away from the drug dispensing fixed plates. The drug dispensing movable plates and the drug dispensing limiting plates are slidably attached to each other.

[0010] Optionally, the first medicine container has one and only one dispenser, while the second medicine container has multiple dispensers arranged in a circular array.

[0011] Optionally, the top of the first and second dispensing tanks is also provided with a top plate, and a support frame is installed above the top plate, on which a dispensing motor is fixedly installed.

[0012] Optionally, the first medicine tank is fixedly connected to the first support plate, the second medicine tank is rotatably connected to the second support plate, a drive plate is fixedly installed on the top of the outer shell of the first dispensing tank, a belt drive wheel is provided on the top of the top plate, the output shaft of the dispensing motor is fixedly connected to the top of the second medicine tank, and the dispensing motor is connected to the drive plate through the belt drive wheel.

[0013] Optionally, a telescopic screw is coaxially mounted on the bottom of the drive disc, a threaded hole is provided on the top of the first medicine container, the telescopic screw is threadedly engaged with the threaded hole, and a pressing plate is rotatably mounted on the bottom of the telescopic screw, the pressing plate slidingly adhering to the inner wall of the first medicine container.

[0014] Optionally, the dosing device of the first reagent tank is arranged in a direction corresponding to the feed inlet of the first treatment tank.

[0015] The filter press provided by this solution for industrial wastewater treatment, which is easy to maintain independently, is used in the following ways: 1. By setting up a first treatment tank and a second treatment tank, as well as a first dosing tank and a second dosing tank, PAC and CPAM can be placed in the first and second reagent tanks to perform multi-stage wastewater treatment on the sludge entering the filter press. This allows the sludge to be mixed with different reagents, thereby changing the properties of the sludge. The sludge first enters the first treatment tank and is fully mixed with PAC by a stirring mechanism. The charge neutralization and adsorption bridging effect of PAC destroys the stability of the sludge and achieves preliminary dewatering. Subsequently, the sludge enters the second treatment tank through the sludge pipe and undergoes a flocculation reaction with CPAM. Through the entrapment effect of the polymer chains, large flocs are formed, further reducing the water content of the sludge. 2. The internal structure of the first and second dosing tanks differs according to the dosing requirements of PAC and CPAM. The dosing motor drives both the first and second dosing tanks simultaneously. During operation, the output shaft of the dosing motor rotates only once. Since there is only one dosing device on the first dosing tank, the dosing device will only contact the curved part once, thus dosing only once. The second dosing tank is equipped with multiple dosing devices, thus dosing CPAM multiple times, which meets the dosing requirements, ensures the rationality of the chemical changes in sludge, further ensures the effectiveness of water pollution treatment, and protects the filter press. 3. When the dosing motor is running, the drive disc drives the outer shell to rotate, achieving relative rotation with the single dosing device, thereby triggering the dosing device to discharge. At the same time, the drive disc drives the telescopic screw to rotate, causing the telescopic screw to undergo helical motion through the threaded hole. The sliding screw of the telescopic screw rotates and extends, causing the position of the extrusion plate to change, thereby extruding the agent inside the first agent tank. This causes PAC to be subjected to pressure and gravity simultaneously and discharge quickly. Combined with the stirring of the agitator, instantaneous charge neutralization is ensured, forming stable flocs.

[0016] Other features and advantages of this solution will be described in detail in the following detailed implementation section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the first and second dispensing tanks of the present invention.

[0020] Figure 4 This is a schematic diagram of the outer casing of the present invention.

[0021] Figure 5 This is a schematic diagram of the specific three-dimensional structure of the second dispensing tank of the present invention.

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the dosing device of the present invention.

[0023] Figure 7 This is a partial cross-sectional structural diagram of the present invention.

[0024] Figure 8 For the present invention Figure 7 A magnified structural diagram at point A.

[0025] Explanation of reference numerals in the attached drawings: 10. Filter press body; 110. First treatment tank; 120. Second treatment tank; 130. Sludge pipe; 140. Filter press tube; 150. First feeding tank; 160. Second feeding tank; 170. First mixing motor; 180. Second mixing motor; 190. Agitator; 200. Outer shell; 210. First reagent tank; 220. Second reagent tank; 230. First support plate; 240. Second support plate. Support plate; 250, Dosing device; 251, Dispensing movable plate; 252, Dispensing fixed plate; 253, Dispensing limit plate; 254, Dispensing telescopic spring; 255, Outer dispensing channel; 256, Inner dispensing channel; 260, Curved surface; 310, Top plate; 320, Support frame; 330, Dosing motor; 340, Belt drive pulley; 350, Drive plate; 360, Telescopic screw; 370, Threaded hole; 380, Extrusion plate. Detailed Implementation

[0026] To make the aforementioned objectives, features, and advantages of this solution more apparent and understandable, the specific embodiments of this solution are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this solution. However, this solution can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this solution. Therefore, this solution is not limited to the specific embodiments disclosed below.

[0027] In the description of this solution, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this solution. The terms "first" and "second" are used to distinguish one element from another and do not have sequential or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings indicate the same or similar elements, which will not be repeated here.

[0028] In this solution, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this solution based on the specific circumstances.

[0029] According to some embodiments of this solution, a filter press for industrial wastewater treatment that is easy to maintain independently is provided, for reference. Figures 1-8 As shown, the industrial wastewater treatment filter press that is easy to maintain independently includes a filter press body 10, and the operation of the filter press body 10 uses existing filter press technology.

[0030] The filter press body 10 is equipped with a multi-stage wastewater treatment mechanism on its side. The multi-stage wastewater treatment mechanism includes a first treatment tank 110 and a second treatment tank 120. A sludge pipe 130 is connected between the discharge port of the first treatment tank 110 and the inlet of the second treatment tank 120. The filter press body 10 is connected between the second treatment tank 120 and the inlet of the filter press body 10. A first feeding tank 150 is connected above the first treatment tank 110, and a second feeding tank 160 is connected above the second treatment tank 120 for adding different agents to the sludge. A stirring mechanism is provided in the first treatment tank 110 and the second treatment tank 120. The stirring mechanism includes a first mixing motor 170, a second mixing motor 180, and a stirrer 190.

[0031] The first mixing motor 170 and the second mixing motor 180 are respectively disposed on the side of the first processing tank 110 and the second processing tank 120. The stirrer 190 is rotatably installed in the first processing tank 110 and the second processing tank 120. The first mixing motor 170 and the second mixing motor 180 are respectively connected to the corresponding stirrer 190.

[0032] The first dispensing tank 150 includes a first reagent tank 210 and an outer shell 200 located outside the first reagent tank 210. The second dispensing tank 160 includes a second reagent tank 220 and an outer shell 200 located outside the second reagent tank 220. The two outer shells 200 are of the same specifications. The discharge ports of the first reagent tank 210 and the second reagent tank 220 are respectively connected to the inlet ports of the first processing tank 110 and the second processing tank 120.

[0033] The first reagent container 210 contains PAC, which is polyaluminum chloride. It needs to be added in full at once and mixed quickly. The second reagent container 220 contains CPAM, which is cationic polyacrylamide. It needs to be mixed slowly in multiple batches to avoid excessive local concentrations that could cause the coating to fail.

[0034] In specific configurations, sludge pumps are selectively installed on sludge pipe 130 and filter press pipe 140 according to actual needs for transporting sludge. Solenoid valves are installed at the discharge ports of the first treatment tank 110, the second treatment tank 120, the first reagent tank 210, and the second reagent tank 220 to control the discharge time.

[0035] Additionally, see Figure 3 The first treatment tank 110 is equipped with a first support plate 230 on its top, and the second treatment tank 120 is equipped with a second support plate 240 on its top. Both the first support plate 230 and the second support plate 240 are provided with medicine passage holes. Both the first medicine tank 210 and the second medicine tank 220 are provided with medicine dispensers 250. The outer shell 200 is provided with a curved surface 260, and the medicine dispenser 250 is in periodic contact with the curved surface 260.

[0036] See Figure 6 The dosing device 250 includes a dispensing movable plate 251, a dispensing fixed plate 252, a dispensing limiting plate 253, and a dispensing telescopic spring 254. The inner walls of the first medicine tank 210 and the second medicine tank 220 have the same number of dispensing ports as the dosing device 250. The dispensing fixed plate 252 is slidably engaged with the dispensing movable plate 251. The dispensing movable plate 251 has an outward dispensing channel 255 inside. The dispensing fixed plate 252 has an inner dispensing channel 256 inside. The inner dispensing channel 256 is connected to the dispensing port. The dispensing telescopic spring 254 is connected to the side of the dispensing movable plate 251. The number of dispensing limit plates 253 is the same as that of dispensing movable plates 251. The dispensing limit plates 253 are located on the side of the dispensing movable plate 251 away from the dispensing fixed plate 252. The dispensing movable plate 251 and the dispensing limit plates 253 slide and fit together.

[0037] When the dispensing plate 251 touches the curved part 260, the dispensing plate 251 is pushed, the dispensing extension spring 254 is compressed, the inner dispensing channel 256 and the outer dispensing channel 255 are connected, and the dispensing device 250 dispenses medicine.

[0038] Furthermore, see Figure 3 The first medicine tank 210 has one and only one dispenser 250, while the second medicine tank 220 has multiple dispensers 250 arranged in a circular array.

[0039] The first dispensing tank 150 and the second dispensing tank 160 are also provided with a top plate 310, and a support frame 320 is installed above the top plate 310. A dosing motor 330 is fixedly installed on the support frame 320.

[0040] The first medicine tank 210 is fixedly connected to the first support plate 230, the second medicine tank 220 is rotatably connected to the second support plate 240, the top of the outer shell 200 of the first dispensing tank 150 is fixedly installed with a drive plate 350, the top of the top plate 310 is provided with a belt drive wheel 340, the output shaft of the dispensing motor 330 is fixedly connected to the top of the second medicine tank 220, and the dispensing motor 330 is connected to the drive plate 350 through the belt drive wheel 340.

[0041] A telescopic screw 360 is coaxially mounted on the bottom of the drive disk 350. The telescopic screw 360 is a combination of a fixed sleeve and a sliding screw, with the sliding screw slidingly engaged with the fixed sleeve.

[0042] The top of the first medicine container 210 has a threaded hole 370, and the telescopic screw 360 is threadedly engaged with the threaded hole 370. A pressing plate 380 is rotatably installed at the bottom of the telescopic screw 360, and the pressing plate 380 slides against the inner wall of the first medicine container 210.

[0043] In particular, the dosing device 250 of the first reagent tank 210 is positioned in the same direction as the inlet of the first treatment tank 110. This ensures that when the dosing device 250 of the first reagent tank 210 comes into contact with the curved section 260, the falling material mixes perfectly with the incoming sludge.

[0044] Specifically, by setting up the first treatment tank 110 and the second treatment tank 120, as well as the first dosing tank 150 and the second dosing tank 160, PAC and CPAM can be placed in the first reagent tank 210 and the second reagent tank 220 to perform multi-stage wastewater treatment on the sludge entering the filter press. This allows the sludge to be mixed with different reagents, thereby changing the properties of the sludge, reducing the clogging of the filter cloth pores, improving the wastewater treatment effect, and reducing the maintenance cost of the filter press.

[0045] Through the above technical solution, the industrial wastewater treatment filter press provided by this solution, which is easy to maintain independently, allows wastewater containing a large amount of sludge to first enter the first treatment tank 110 and the second treatment tank 120, add chemicals, and drive the agitator 190 to rotate to mix the wastewater and chemicals. After completing multi-stage wastewater treatment, the wastewater is then transported into the filter press body 10 for filtration.

[0046] Specifically, since the first reagent tank 210 is equipped with only a single dosing device 250, when the curved part 260 touches the dispensing movable plate 251, the movable plate 251 is pushed, causing the dispensing telescopic spring 254 to be compressed. At this time, the inner dispensing channel 256 and the outer dispensing channel 255 are connected, realizing single dispensing. At the same time, the output shaft of the dosing motor 330 rotates, driving the telescopic screw 360 to complete the spiral feeding in the threaded hole 370 through the belt drive wheel 340, so that the extrusion plate 380 moves vertically downward to apply positive pressure to the reagent, causing PAC to be discharged quickly and completely under the dual action of gravity and mechanical pressure, ensuring that the sludge reagent body instantly completes charge neutralization and forms stable flocs; When the treated sludge enters the second treatment tank 120, multiple dosing devices 250 are arranged in a circular array in the second reagent tank 220. When the dosing motor 330 drives the second reagent tank 220, each dosing device 250 sequentially contacts the curved section 260, triggering multiple dispensing actions to achieve continuous and segmented CPAM dosing. This differentiated dosing strategy precisely matches the chemical characteristics of PAC, which requires rapid reaction, and CPAM, which requires continuous action.

[0047] It should be noted that the curved part 260 of the second reagent tank 220 is set to correspond to the feed inlet of the second processing tank 120.

[0048] The preferred embodiments of this solution have been described in detail above with reference to the accompanying drawings. However, this solution is not limited to the specific details in the above embodiments. Within the scope of the technical concept of this solution, various simple modifications can be made to the technical solution, and these simple modifications all fall within the protection scope of this solution.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this solution will not describe the various possible combinations separately.

[0050] Furthermore, various implementations of this solution can be combined in any way, as long as they do not violate the spirit of this solution, they should also be regarded as the content disclosed in this solution.

Claims

1. A filter press for industrial wastewater treatment that is easy to maintain independently, comprising a filter press body (10), characterized in that: The filter press body (10) is provided with a multi-stage sewage treatment mechanism on its side. The multi-stage sewage treatment mechanism includes a first treatment tank (110) and a second treatment tank (120). A sludge pipe (130) is connected between the discharge port of the first treatment tank (110) and the inlet of the second treatment tank (120). The filter press body (10) is connected between the second treatment tank (120) and the inlet of the filter press body (10). A first feeding tank (150) is connected above the first treatment tank (110), and a second feeding tank (160) is connected above the second treatment tank (120) for adding different agents to the sludge. A stirring mechanism is provided in the first treatment tank (110) and the second treatment tank (120). The stirring mechanism includes a first mixing motor (170), a second mixing motor (180), and a stirrer (190).

2. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 1, characterized in that: The first mixing motor (170) and the second mixing motor (180) are respectively disposed on the side of the first processing tank (110) and the second processing tank (120), and the stirrer (190) is rotatably installed in the first processing tank (110) and the second processing tank (120). The first mixing motor (170) and the second mixing motor (180) are respectively connected to the corresponding stirrer (190).

3. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 1, characterized in that: The first dispensing tank (150) includes a first reagent tank (210) and an outer shell (200) located outside the first reagent tank (210). The second dispensing tank (160) includes a second reagent tank (220) and an outer shell (200) located outside the second reagent tank (220). The two outer shells (200) are of the same specifications. The outlets of the first reagent tank (210) and the second reagent tank (220) are respectively connected to the inlets of the first processing tank (110) and the second processing tank (120).

4. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 3, characterized in that: The first treatment tank (110) is equipped with a first support plate (230) on top, and the second treatment tank (120) is equipped with a second support plate (240) on top. Both the first support plate (230) and the second support plate (240) are provided with a drug passage hole. Both the first drug tank (210) and the second drug tank (220) are provided with a drug dispenser (250). The outer shell (200) is provided with a curved surface (260). The drug dispenser (250) is in periodic contact with the curved surface (260).

5. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 4, characterized in that: The dosing device (250) includes a dispensing movable plate (251), a dispensing fixed plate (252), a dispensing limiting plate (253), and a dispensing telescopic spring (254). The inner walls of the first medicine tank (210) and the second medicine tank (220) have the same number of dispensing ports as the dosing device (250). The dispensing fixed plate (252) is slidably engaged with the dispensing movable plate (251). The dispensing movable plate (251) has an outward dispensing channel (255) inside. The dispensing fixed plate (252) has an inner dispensing channel (256) inside. The inner dispensing channel (256) is connected to the dispensing port. The dispensing telescopic spring (254) is connected to the side of the dispensing movable plate (251). The number of the dispensing limiting plates (253) is the same as the number of the dispensing movable plates (251). The dispensing limiting plates (253) are located on the side of the dispensing movable plates (251) away from the dispensing fixed plates (252). The dispensing movable plates (251) and the dispensing limiting plates (253) slide against each other.

6. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 4, characterized in that: The first medicine container (210) has one and only one dispenser (250), and the second medicine container (220) has multiple dispensers (250) arranged in a circular array.

7. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 4, characterized in that: The first dispensing tank (150) and the second dispensing tank (160) are also provided with a top plate (310), and a support frame (320) is installed above the top plate (310). A dosing motor (330) is fixedly installed on the support frame (320).

8. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 7, characterized in that: The first medicine tank (210) is fixedly connected to the first support plate (230), the second medicine tank (220) is rotatably connected to the second support plate (240), a drive plate (350) is fixedly installed on the top of the outer shell (200) of the first dispensing tank (150), a belt drive wheel (340) is provided on the top of the top plate (310), the output shaft of the dispensing motor (330) is fixedly connected to the top of the second medicine tank (220), and the dispensing motor (330) is connected to the drive plate (350) through the belt drive wheel (340).

9. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 8, characterized in that: A telescopic screw (360) is coaxially mounted on the bottom of the drive disc (350). A threaded hole (370) is opened on the top of the first medicine tank (210). The telescopic screw (360) is threadedly engaged with the threaded hole (370). A pressing plate (380) is rotatably mounted on the bottom of the telescopic screw (360). The pressing plate (380) slides against the inner wall of the first medicine tank (210).

10. A filter press for industrial wastewater treatment and easy to maintain independently, as described in claim 5, characterized in that: The dosing device (250) of the first reagent tank (210) is arranged in the direction corresponding to the feed inlet of the first processing tank (110).

Images