Efficient precipitation and filtration integrated device for phosphating wastewater treatment

Abstract

The utility model relates to the technical field of sewage physicochemical treatment, and particularly discloses an efficient precipitation and filtration integrated device for phosphating wastewater treatment, which comprises a precipitation tank, a filtration tank, quartz sand filtration equipment and activated carbon filtration equipment, the outer side wall of the precipitation tank is communicated with a mixing pipe, and the outer side wall of the mixing pipe is provided with a booster pump; a top cover is mounted at the top of the filter tank, an observation window is mounted on the upper end face of the top cover in a penetrating manner, a supporting table is mounted on the inner side wall of the filter tank, and a filter basket is placed on the upper end face of the supporting table, so that the sedimentation rate of particulate matters in wastewater is increased; the concentration of pollutants in the wastewater is effectively reduced, after the wastewater enters the filtering tank through the flow guide pipe, the wastewater is preliminarily filtered by the filtering basket, and the preliminary filtering treatment effect on the wastewater is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater physicochemical treatment technology, specifically to an integrated device for high-efficiency sedimentation and filtration in phosphating wastewater treatment. Background Technology

[0002] Phosphating is a common surface treatment process for metals, aiming to form a phosphate chemical conversion film that adheres to the metal surface through chemical and electrochemical reactions. Before phosphating, degreasing and pickling are required to remove grease, scale, and rust from the metal surface. Pickling and phosphating wastewater originates from pre-degreasing, degreasing, pickling, surface conditioning, and passivation processes. Its main pollutants include COD, phosphates, suspended solids (SS), metals, and small amounts of emulsified oil, characterized by complex water quality, a wide variety of pollutants, and high concentrations. Various regions have high requirements for the treatment and discharge of wastewater from the pickling and phosphating industry, necessitating treatment to ensure compliance with discharge standards.

[0003] The Chinese Patent Publication No. CN222312915U discloses an integrated high-efficiency sedimentation and filtration device for treating pickling and phosphating wastewater, belonging to the field of wastewater physicochemical treatment technology. It comprises an inclined tube sedimentation tank, a quartz sand filter, and an activated carbon filter, arranged sequentially. A secondary sedimentation tank is located between the inclined tube sedimentation tank and the quartz sand filter for secondary sedimentation. The inclined tube sedimentation tank includes a dosing zone and a sedimentation zone. The inlet of the inclined tube sedimentation tank is connected to a pipe leading directly to the bottom of the dosing zone, and the upper end of the dosing zone is connected to the sedimentation zone. The outlet of the inclined tube sedimentation tank is connected to the inlet pipe of the secondary sedimentation tank. A diversion plate is installed below the outlet of the secondary sedimentation tank inlet pipe to divert wastewater and prevent the wastewater from washing away sludge. The beneficial effects of this invention are: it provides an inclined tube sedimentation tank capable of simultaneous dosing, mixing, and sedimentation; the inclined tube sedimentation tank and the secondary sedimentation tank work together to simplify the process flow, reduce operating costs, shorten the production cycle, and improve production efficiency.

[0004] In actual use, the above-mentioned device cannot quickly and evenly mix the wastewater and the drug solution, which reduces the sedimentation speed of the wastewater and the sedimentation filtration efficiency is poor, thus reducing the wastewater treatment efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an integrated high-efficiency sedimentation and filtration device for phosphating wastewater treatment. It increases the sedimentation rate of particulate matter in the wastewater, effectively reduces the concentration of pollutants in the wastewater, and after the wastewater enters the interior of the filter tank through the guide pipe, the filter basket performs preliminary filtration of the wastewater, effectively improving the preliminary filtration treatment of the wastewater.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment, including a sedimentation tank, a filtration tank, a quartz sand filtration device and an activated carbon filtration device, wherein a mixing pipe is connected to the outer wall of the sedimentation tank, a booster pump is installed on the outer wall of the mixing pipe, and the other end of the mixing pipe penetrates the upper surface of the sedimentation tank and extends into the interior of the sedimentation tank.

[0007] The top of the filter tank is equipped with a top cover, and an observation window is installed through the upper surface of the top cover. A support platform is installed on the inner side wall of the filter tank, and a filter basket is placed on the upper surface of the support platform.

[0008] The outer walls of the sedimentation tank outlet pipe and the filtration tank outlet pipe are respectively equipped with a first flow control valve and a second flow control valve, and the other end is connected to a sewage pipe.

[0009] In order to allow the supernatant in the sedimentation tank to enter the interior of the filter tank through the guide pipe, as a preferred embodiment of the high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment of this utility model, a guide pipe is connected between the outer wall of the sedimentation tank and the outer wall of the filter tank, and a solenoid valve is installed on the outer wall of the guide pipe.

[0010] In order to allow the water filtered by the filter basket to be passed through the hose into the quartz sand filtration equipment for filtration, as a preferred embodiment of the high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment of this utility model, the filter basket is provided with a hose inside, the other end of the hose penetrates the inner wall of the filter tank and is connected to the quartz sand filtration equipment, and a water pump is installed on the outer wall of the hose and fixed to the outer wall of the filter tank by an mounting plate.

[0011] To facilitate the control of the operation of each component, the outer wall of the sedimentation tank of the present invention, which is a preferred high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment, is equipped with a timer and a controller.

[0012] To facilitate the addition of wastewater and chemical solutions to the sedimentation tank, the preferred embodiment of the high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment of this utility model has an inlet pipe and a chemical dosing pipe installed through the outer wall and top surface of the sedimentation tank, respectively. A metering pump located outside the sedimentation tank is installed on the outer wall of both the inlet pipe and the chemical dosing pipe.

[0013] To facilitate the further filtration of water filtered by the quartz sand filter into the activated carbon filter, the quartz sand filter and the activated carbon filter are preferably connected by a pipeline with a pump body, as is preferred in the high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment of this utility model.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention involves adding a predetermined amount of wastewater and chemical solution into a sedimentation tank. A booster pump then sprays the wastewater and chemical solution from the top of the sedimentation tank through a mixing pipe, which quickly and evenly mixes the chemical solution and wastewater, increasing the sedimentation rate of particulate matter in the wastewater and effectively reducing the concentration of pollutants in the wastewater. After the wastewater enters the filter tank through a guide pipe, the filter basket performs preliminary filtration, effectively improving the preliminary filtration effect of the wastewater. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a top view of the filter tank of this utility model;

[0019] Figure 4 This is a structural diagram of the filter basket of this utility model.

[0020] In the diagram: 1. Sedimentation tank; 101. Inlet pipe; 102. Dosing pipe; 103. First flow control valve; 2. Filtration tank; 201. Top cover; 202. Second flow control valve; 203. Support platform; 204. Filter basket; 3. Quartz sand filtration equipment; 301. Flexible hose; 302. Water pump; 4. Activated carbon filtration equipment; 5. Mixing pipe; 501. Booster pump; 6. Guide pipe; 601. Solenoid valve; 7. Sewage pipe. Detailed Implementation

[0021] Please see Figures 1 to 4 The high-efficiency sedimentation and filtration integrated device for phosphating wastewater treatment includes a sedimentation tank 1, a filtration tank 2, a quartz sand filtration device 3 and an activated carbon filtration device 4. The outer wall of the sedimentation tank 1 is connected to a mixing pipe 5. A booster pump 501 is installed on the outer wall of the mixing pipe 5, and the other end of the pump penetrates the upper surface of the sedimentation tank 1 and extends into the interior of the sedimentation tank 1.

[0022] A top cover 201 is installed on the top of the filter tank 2. An observation window is installed through the upper end of the top cover 201. A support platform 203 is installed on the inner side wall of the filter tank 2. A filter basket 204 is placed on the upper end of the support platform 203.

[0023] The outer walls of the effluent pipes of sedimentation tank 1 and filtration tank 2 are respectively equipped with a first flow control valve 103 and a second flow control valve 202, and the other end is connected to a sewage pipe 7.

[0024] In this embodiment: a set amount of wastewater is added to the sedimentation tank 1 via a metering pump on the inlet pipe 101. A set amount of chemicals (polyaluminum chloride, calcium oxide, and polyacrylamide) is added to the sedimentation tank 1 via a metering pump on the outer wall of the dosing pipe 102. Then, the booster pump 501 is started, causing the mixing pipe 5 to spray the wastewater and chemical solution from the top of the sedimentation tank 1, which can quickly mix the chemical solution and wastewater. After mixing and sedimentation are completed, the controller controls the first flow control valve 103 to open, allowing the sedimentation tank 1 to... The outlet pipe carries a set amount of sediment (phosphate, suspended particulate matter, metal ions and a small amount of emulsified oil) into the sewage pipe 7. Then, the solenoid valve 601 is opened, allowing the supernatant in the sedimentation tank 1 to enter the interior of the filter tank 2 through the guide pipe 6. The filter basket 204 effectively performs preliminary filtration of the wastewater. By starting the water pump 302, the hose 301 passes the filtered wastewater into the quartz sand filter 3 for further filtration. Then, the pump body passes the filtered wastewater into the activated carbon filter 4 for further filtration.

[0025] As a technical optimization of this utility model, a guide pipe 6 is connected between the outer wall of the sedimentation tank 1 and the outer wall of the filter tank 2, and a solenoid valve 601 is installed on the outer wall of the guide pipe 6.

[0026] In this embodiment: by opening the solenoid valve 601, the supernatant in the sedimentation tank 1 can enter the interior of the filter tank 2 through the guide pipe 6.

[0027] As a technical optimization of this utility model, a flexible hose 301 is provided inside the filter basket 204. The other end of the flexible hose 301 passes through the inner wall of the filter pool 2 and is connected to the quartz sand filter device 3. A water pump 302 is installed on the outer wall of the flexible hose 301 and is fixedly installed on the outer wall of the filter pool 2 by an mounting plate.

[0028] In this embodiment: by starting the water pump 302, the hose 301 passes the water filtered by the filter basket 204 into the quartz sand filter device 3 for filtration.

[0029] As a technical optimization of this utility model, a timer and a controller are installed on the outer wall of the sedimentation tank 1.

[0030] In this embodiment, by electrically connecting the controller to the timer, metering pump, solenoid valve 601, first flow control valve 103, second flow control valve 202, booster pump 501, and water pump 302 respectively, it is convenient to control the operation of each component.

[0031] As a technical optimization of this utility model, an inlet pipe 101 and a dosing pipe 102 are respectively installed through the outer wall and top surface of the sedimentation tank 1. Metering pumps located outside the sedimentation tank 1 are installed on the outer walls of both the inlet pipe 101 and the dosing pipe 102.

[0032] In this embodiment: by setting up an inlet pipe 101 and a dosing pipe 102, it is convenient to add wastewater and chemical solution into the sedimentation tank 1, and the metering pump can measure the wastewater and chemical solution added to the sedimentation tank 1.

[0033] As a technical optimization of this utility model, the quartz sand filter device 3 and the activated carbon filter device 4 are connected by a pipe with a pump body.

[0034] In this embodiment, by setting up a pipeline with a pump between the quartz sand filter 3 and the activated carbon filter 4, it is convenient to pass the water filtered by the quartz sand filter 3 into the activated carbon filter 4 for further filtration.

[0035] Working principle: First, connect the device to an external power source. When using the device, first connect the inlet pipe 101 to the wastewater pipe. Through the metering pump on the inlet pipe 101, add the set amount of wastewater into the sedimentation tank 1. Then connect the dosing pipe 102 to the external chemical tank. Through the metering pump on the outer wall of the dosing pipe 102, add the set amount of chemicals (polyaluminum chloride, calcium oxide, and polyacrylamide) into the sedimentation tank 1. Then start the booster pump 501, so that the mixing pipe 5 sprays the wastewater and chemical solution from the top of the sedimentation tank 1, which can quickly mix the chemical solution and wastewater. During the mixing process, the controller controls the timer to keep track of the time. When the mixing time is up... Then, the timer starts timing the sedimentation time in sedimentation tank 1. When the sedimentation time is over, the controller controls the first flow control valve 103 to open, so that the set amount of sediment (phosphate, suspended particulate matter, metal ions and a small amount of emulsified oil) is passed from the outlet pipe of sedimentation tank 1 into the sewage pipe 7. Then, the solenoid valve 601 is opened, so that the supernatant in sedimentation tank 1 can enter the interior of filter tank 2 through the guide pipe 6. The filter basket 204 filters the wastewater. By starting the water pump 302, the hose 301 passes the filtered wastewater into the quartz sand filter device 3 for filtration. Then, the pump body passes the filtered wastewater into the activated carbon filter device 4 for further filtration.

[0036] When it is necessary to clean the impurities in the filter basket 204, the impurities in the filter basket 204 can be cleaned and replaced by opening the top cover 201. The sediment in the filter tank 2 can be discharged by opening the first flow control valve 103.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency precipitation and filtration integrated device for treating phosphating wastewater, comprising a precipitation tank (1), a filtration tank (2), a quartz sand filtration device (3), and an activated carbon filtration device (4), characterized in that: The outer wall of the sedimentation tank (1) is connected to a mixing pipe (5), and a booster pump (501) is installed on the outer wall of the mixing pipe (5), and the other end of the mixing pipe (5) penetrates the upper surface of the sedimentation tank (1) and extends into the interior of the sedimentation tank (1). The filter pool (2) is equipped with a top cover (201), and an observation window is installed through the upper surface of the top cover (201). A support platform (203) is installed on the inner side wall of the filter pool (2), and a filter basket (204) is placed on the upper surface of the support platform (203). The outer walls of the sedimentation tank (1) outlet pipe and the filter tank (2) outlet pipe are respectively equipped with a first flow control valve (103) and a second flow control valve (202), and the other end is connected to a sewage pipe (7).

2. The integrated device for efficient precipitation and filtration of phosphating wastewater according to claim 1, characterized in that: A guide pipe (6) is connected between the outer wall of the sedimentation tank (1) and the outer wall of the filter tank (2), and a solenoid valve (601) is installed on the outer wall of the guide pipe (6).

3. The integrated device for high-efficiency precipitation and filtration of phosphating wastewater according to claim 1, characterized in that: The filter basket (204) is equipped with a hose (301) inside. The other end of the hose (301) passes through the inner wall of the filter tank (2) and is connected to the quartz sand filter device (3). A water pump (302) is installed on the outer wall of the hose (301) and fixed to the outer wall of the filter tank (2) by a mounting plate.

4. The integrated device for efficient precipitation and filtration of phosphating wastewater according to claim 1, characterized in that: A timer and a controller are installed on the outer wall of the sedimentation tank (1).

5. The integrated device for high-efficiency precipitation and filtration of phosphating wastewater according to claim 1, characterized in that: The sedimentation tank (1) has an inlet pipe (101) and a dosing pipe (102) installed through its outer wall and top surface, respectively. The outer walls of the inlet pipe (101) and the dosing pipe (102) are each equipped with a metering pump located outside the sedimentation tank (1).

6. The integrated device for high-efficiency precipitation and filtration of phosphating wastewater according to claim 1, characterized in that: The quartz sand filter (3) and the activated carbon filter (4) are connected by a pipe with a pump.

Images