Sewage treatment PAM dispensing device

Abstract

The utility model relates to sewage treatment technical field, concretely relates to a sewage treatment PAM batching device, including batching container and pipeline system. The first baffle and second baffle are arranged in the middle of batching container, and batching container is divided into three mixing grids; PAM powder and water enter batching container from the first mixing grid, are turned up to the second mixing grid through the below of first baffle, and overflow from the top of second baffle to the third mixing grid, and the filter screen is arranged in the below of first baffle, and the discharge pipeline is arranged in the bottom of third mixing grid; pipeline system still includes water inlet main pipe, second water inlet pipeline, flushing pipeline and waste pipe etc., and the filter is arranged on water inlet main pipe and discharge pipeline. The utility model discloses the structural design of batching container, and sets up filter screen and sets up filter on pipeline, so that the utility model discloses can effectively slow down the plugging condition of pipeline in the process of using, and positively plays a role in guaranteeing the long time stable continuous use of batching device.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater treatment PAM batching device. Background Technology

[0002] Flocculants are needed in the process of wastewater treatment, and PAM solution is commonly used. PAM solution can be used for sludge flocculation and sedimentation in the process of sludge reduction, and can be used in conjunction with coagulant PAC in high-efficiency sedimentation tanks to achieve deep treatment of wastewater.

[0003] Since commercially available PAM is mostly in powder form, it needs to be prepared into a solution in actual production and then transported to the biochemical treatment section. The common practice is to add PAM powder and water in a certain proportion to a mixing tank, stir and dissolve it, and then pump it to the biochemical treatment section for use.

[0004] However, in actual production, it was found that oxidation occurs during the stirring and dissolving process of PAM, which produces a light red, viscous, insoluble substance. This insoluble substance easily clogs the delivery pipeline, making it difficult to continuously and stably prepare the PAM solution and posing a significant obstacle to the stable operation of the production process.

[0005] Therefore, this utility model proposes a PAM batching device, which achieves continuous and stable operation of the PAM batching device through structural design of the batching container, arrangement of the pipeline system and corresponding installation of filters, bringing convenience to actual production. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of the existing technology by providing a wastewater treatment PAM batching device, which can effectively control and reduce blockage in the conveying pipeline and enable the batching device to be used continuously and stably for a long time.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a wastewater treatment PAM batching device, comprising a batching container and a pipeline system;

[0008] The mixing container is provided with a first partition and a second partition, which divide the mixing container into three mixing compartments. Each mixing compartment is provided with a stirrer. The first mixing compartment is provided with a feed inlet and a water inlet. The mixed PAM solution flows from below the first partition to the second mixing compartment and overflows from the top of the second partition to the third mixing compartment. A filter screen is provided in the connecting channel below the first partition.

[0009] The pipeline system includes a first inlet pipe and a discharge pipe; the first inlet pipe is connected to a water inlet, a flow meter is installed on the first inlet pipe, and a first inlet control valve is installed at the rear end of the flow meter; a discharge pipe is installed at the bottom of the third mixing chamber, a discharge control valve is installed on the discharge pipe, and a discharge filter is installed at the rear end of the discharge control valve; the rear end of the discharge pipe is connected to a conveying pump.

[0010] Furthermore, the pipeline system also includes a main inlet pipe connected to the first inlet pipe, an inlet main control valve installed on the main inlet pipe, and an inlet filter installed at the rear end of the main inlet control valve; an overflow port is installed above the third mixing chamber; the main inlet pipe is also connected to the second inlet pipe via a connecting pipe, the second inlet pipe is connected to the overflow port, a connecting control valve is installed on the connecting pipe, and a second inlet control valve is installed on the second inlet pipe.

[0011] Furthermore, the water inlet and overflow outlet are both located on the side wall of the mixing container, with the height of the water inlet being higher than the height of the upper end of the second partition, and the height of the upper end of the second partition being higher than the height of the overflow outlet.

[0012] Furthermore, the connecting pipe is connected to the flushing pipe, and the flushing pipe is connected to the discharge pipe at the rear end of the discharge filter. A flushing control valve is installed on the flushing pipe.

[0013] Furthermore, each of the stirring compartments is provided with a drain port at its bottom, and each drain port is connected to the main drain pipe through a drain pipe channel. Each drain pipe channel is provided with a drain control valve, and the main drain pipe is provided with a main drain control valve.

[0014] Furthermore, the overflow port is connected to the overflow pipe, the overflow pipe is connected to the main drain pipe, and an overflow control valve is installed on the overflow pipe.

[0015] Furthermore, the inlet filter and outlet filter are Y-type filters.

[0016] Furthermore, the aperture of both the filter screen and the sieve in the discharge filter is 0.3~0.8cm.

[0017] Furthermore, each of the inlet filter and the outlet filter is provided with two, one for standby and one for use. The two filters in the inlet filter and the outlet filter are connected in parallel, and control valves are provided at both ends of each filter.

[0018] The beneficial effects of this utility model are:

[0019] 1. The mixing container of this utility model is provided with two partitions, so that the PAM solution is turned up from the bottom of the first partition to the second stirring compartment, and overflows from the top of the second partition to the third stirring compartment. By setting a filter screen below the first partition and the overflow method, the generated viscous insoluble matter can be effectively filtered and separated, which plays a positive role in ensuring the stable use of the mixing container.

[0020] 2. This utility model is equipped with filters on both the main water inlet pipe and the discharge pipe, with one filter for each pipe. This further filters impurities in the inlet water and viscous insoluble substances in the discharge, thereby improving the stability of the mixing container.

[0021] 3. The screen in the filter and the discharge filter of this utility model has a large pore size. Since the insoluble matter generated during the preparation of PAM solution is relatively viscous and lumpy, it can achieve effective filtration and facilitate the stable use of the filter and the filter screen.

[0022] 4. This utility model also includes a cleaning system. The cleaning system introduces water through the first water inlet pipe and the second water inlet pipe, which can realize the water intake and cleaning of each mixing compartment. It also discharges waste through the waste discharge pipe. In addition, a flushing pipe is provided to flush the downstream conveying pump pipe, which brings convenience to the maintenance in production and makes it easier for the continuous and stable operation of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the pipeline connection arrangement of this utility model.

[0025] The names corresponding to each mark in the diagram:

[0026] 1. Batching container; 11. First mixing compartment; 111. Feed inlet; 112. First agitator; 113. Water inlet; 114. First drain outlet; 12. Second mixing compartment; 121. Second agitator; 122. Second drain outlet; 13. Third mixing compartment; 131. Third agitator; 132. Overflow outlet; 133. Third drain outlet; 14. First baffle; 141. Filter screen; 15. Second baffle; 2. Main water inlet pipe; 21. Main water inlet control valve; 22. Water inlet filter; 3. First water inlet pipe; 31. Flow meter; 32. First inlet... 4. Water control valve; 5. Connecting pipe; 6. Connecting control valve; 7. Second water inlet pipe; 8. Second water inlet control valve; 9. Flushing pipe; 10. Flushing control valve; 11. Overflow control valve; 12. Waste discharge pipe; 23. Main drain pipe; 24. Main drain control valve; 35. First drain pipe; 46. Second drain pipe; 57. Second drain control valve; 68. Third drain pipe; 79. Third drain control valve; 80. Discharge pipe; 10. Discharge control valve; 11. Discharge filter. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0028] Embodiments of this utility model:

[0029] like Figure 1-2 As shown, this utility model includes a mixing container 1 in this embodiment. In this embodiment, the mixing container 1 is rectangular. A first partition 14 and a second partition 15 are arranged in the mixing container 1 at intervals. The mixing container 1 is divided into three mixing compartments by the first partition 14 and the second partition 15, namely the first mixing compartment 11, the second mixing compartment 12 and the third mixing compartment 13. The first mixing compartment 11 is connected to the second mixing compartment 12 through the bottom of the first partition 14. A filter screen 141 is fixedly arranged in the connecting channel (the two sides of the first partition 14 are connected to the wall of the mixing container 1, and the bottom forms a connecting channel. The filter screen is fixed to the first partition 14 by bolts, etc.). The second mixing compartment 12 is connected to the third mixing compartment 13 above the second partition 15 through overflow.

[0030] Agitators are respectively provided in the first mixing grid 11, the second mixing grid 12, and the third mixing grid 13, namely the first agitator 112, the second agitator 121, and the third agitator 131. A feed inlet 111 is provided above the first mixing grid 11 for adding PAM powder. In this embodiment, the PAM powder is quantitatively added by a screw conveyor. A water inlet 113 is provided above the side wall of the first mixing grid 11, and an overflow outlet 132 is provided above the side wall of the third mixing grid 13. The height of the upper end of the second partition 15 is lower than the height of the water inlet 113, and the height of the overflow outlet 132 is lower than the height of the top of the second partition 15. A discharge outlet is provided on one side of the bottom of the third mixing grid 13. Drain outlets are respectively provided at the bottom of the first mixing grid 11, the second mixing grid 12, and the third mixing grid 13, namely the first drain outlet 114, the second drain outlet 122, and the third drain outlet 133.

[0031] In this embodiment, a main inlet pipe 2 is provided, and an inlet pump is provided on the main inlet pipe 2. In this embodiment, the main inlet pipe 2 draws recycled water from the secondary sedimentation tank in the plant area. A main inlet control valve 21 is provided on the main inlet pipe 2, and an inlet filter 22 is provided at the rear end of the main inlet control valve 21. In this embodiment, the main inlet control valve 21 is a manual ball valve, and the inlet filter 22 is a Y-type filter.

[0032] The main inlet pipe 2 is connected to the first inlet pipe 3 and the connecting pipe 4 via a tee. A flow meter 31 is installed on the first inlet pipe 3, and a first inlet control valve 32 is installed at the rear end of the flow meter 31. The first inlet pipe 3 is connected to the inlet 113. In this embodiment, the flow meter 31 is a float flow meter 31, and the first inlet control valve 32 is a manual ball valve.

[0033] The connecting pipe 4 is connected to the second inlet pipe 5 and the flushing pipe 6 via a tee. A connecting control valve 41 is installed on the connecting pipe 4, a second inlet control valve 51 is installed on the second inlet pipe 5, and a flushing control valve 61 is installed on the flushing pipe 6. The second inlet pipe 5 is connected to the overflow port 132. The flushing pipe 6 is connected to the discharge pipe 9. One end of the discharge pipe 9 is connected to the discharge port at the bottom of the third mixing grid 13, and the other end is connected to the discharge conveying pump. A discharge control valve 91 is installed on the discharge pipe 9, and a discharge filter 92 is installed at the rear end of the discharge control valve 91. The flushing pipe 6 is connected to the rear end of the discharge filter 92. In this embodiment, the connecting control valve 41, the second inlet control valve 51, the flushing control valve 61, and the discharge control valve 91 are all manual ball valves, and the discharge filter 92 is a Y-type filter.

[0034] In this embodiment, a waste discharge pipe 8 is also provided. The waste discharge pipe 8 includes a main discharge pipe 81, which is connected to the overflow pipe 7, the first discharge pipe 82, the second discharge pipe 83, and the third discharge pipe 84. The first discharge pipe 82 is connected to the first discharge outlet 114, the second discharge pipe 83 is connected to the second discharge outlet 122, and the third discharge pipe 84 is connected to the third discharge outlet 133. The overflow pipe 7, the first discharge pipe 82, the second discharge pipe 83, and the third discharge pipe 84 are connected to the third discharge outlet 133. The system is equipped with an overflow control valve 71, a first drain control valve 821, a second drain control valve 831, and a third drain control valve 841. One end of the drain main pipe 81 is connected to the factory's sewage pipe and then leads to the factory's wastewater treatment system. A drain main control valve 811 is installed on the drain main pipe 81 between the first drain pipe 82 and the factory's sewage pipe. In this embodiment, the overflow control valve 71, the first drain control valve 821, the second drain control valve 831, and the third drain control valve 841 are all manual ball valves.

[0035] The principle of this utility model is as follows:

[0036] This invention is used for preparing PAM solution in a factory. Commercially available powdered PAM is quantitatively conveyed into the mixing container 1 via a screw conveyor through the inlet 111. Simultaneously, a certain amount of metered water is added to the mixing container 1 through the main water inlet pipe 2 and the first water inlet pipe 3. During the process, both PAM powder and metered water are continuously added according to a specific ratio. For example, to prepare a PAM solution with a concentration of approximately 0.1%, the PAM and water are mixed at a mass ratio of 1:1000. Continuous addition; it should be noted that minor fluctuations in materials during the batching process have negligible impact on actual production; during normal batching, all agitators are turned on, the main inlet control valve 21, the first inlet control valve 32, the discharge control valve 91, the overflow control valve 71, and the drain control valve 811 are open, and all other valves are closed; the material in the batching container 1 overflows from the bottom of the first partition 14 and the top of the second partition 15 into the third mixing compartment 13, and then is transported to the biochemical treatment section of the plant through the discharge pipe 9.

[0037] During the PAM preparation process, due to the high viscosity of the material and the influence of oxidation, a red, viscous, insoluble substance will form in the PAM solution. This insoluble substance easily clogs the pipes and the downstream conveying pump, affecting the normal transport of the material. Therefore, this invention uses multiple filtration mechanisms to reduce the insoluble substance in the PAM solution. For example, the inlet filter 22 on the main inlet pipe 2 is used to filter impurities in the inlet water; the filter screen 141 below the first partition 14 is used for primary filtration of the insoluble substance generated in the solution; and the outlet filter on the outlet pipe 9... 92 is used for secondary filtration of insoluble substances generated in the solution; at the same time, the overflow above the second partition 15 also helps to reduce the flow of insoluble substances to the third stirring grid 13 at the rear end; it should be noted that since the insoluble substances generated in the PAM solution are relatively viscous and lumpy, the pore size of the screen in the filter screen 141 and the discharge filter 92 should be relatively large, preferably 0.3~0.8cm. At the same time, the inlet filter 22 and the discharge filter 92 are set up with one in reserve and one in use (parallel pipelines are set, and control valves are set on both the front and rear sides of the filter) to ensure the continuous and stable operation of the batching device.

[0038] After the device has been running for a period of time, it needs to be cleaned. During the process, insoluble substances adhering to the inner wall of the container and the filter screen 141 are removed. During the cleaning process, the screw conveyor stops conveying PAM powder. At this time, the first water inlet pipe 3 is opened to deliver cleaning water to the first mixing grid 11 and the second mixing grid 12. At the same time, the second water inlet pipe 5 is opened (at this time, the connecting control valve 41 is opened and the overflow control valve 71 is closed) to deliver cleaning water to the third mixing grid 13. Then, the batching container 1 is cleaned (a manhole is opened on the top of the container for manual cleaning). After cleaning, the cleaning water is discharged into the factory sewage pipe through each drain. If the conveying pump at the rear end of the discharge pipe 9 becomes blocked during production or cleaning, in this utility model, the conveying pump at the rear end of the discharge filter 92 can also be flushed through the flushing pipe 6, thereby ensuring continuous and stable production.

Claims

1. A wastewater treatment PAM batching device, characterized in that: Including ingredient containers and piping systems; The mixing container is provided with a first partition and a second partition, which divide the mixing container into three mixing compartments. Each mixing compartment is provided with a stirrer. The first mixing compartment is provided with a feed inlet and a water inlet. The mixed PAM solution flows from below the first partition to the second mixing compartment and overflows from the top of the second partition to the third mixing compartment. A filter screen is provided in the connecting channel below the first partition. The pipeline system includes a first inlet pipe and a discharge pipe; the first inlet pipe is connected to a water inlet, a flow meter is installed on the first inlet pipe, and a first inlet control valve is installed at the rear end of the flow meter; a discharge pipe is installed at the bottom of the third mixing chamber, a discharge control valve is installed on the discharge pipe, and a discharge filter is installed at the rear end of the discharge control valve; the rear end of the discharge pipe is connected to a conveying pump.

2. The wastewater treatment PAM batching device according to claim 1, characterized in that: The pipeline system also includes a main inlet pipe connected to the first inlet pipe, an inlet main control valve installed on the main inlet pipe, and an inlet filter installed at the rear end of the main inlet control valve; an overflow port is installed above the third mixing compartment; the main inlet pipe is also connected to the second inlet pipe via a connecting pipe, the second inlet pipe is connected to the overflow port, a connecting control valve is installed on the connecting pipe, and a second inlet control valve is installed on the second inlet pipe.

3. The wastewater treatment PAM batching device according to claim 2, characterized in that: The water inlet and overflow outlet are both located on the side wall of the mixing container. The height of the water inlet is higher than the height of the upper part of the second partition, and the height of the upper part of the second partition is higher than the height of the overflow outlet.

4. A wastewater treatment PAM batching device according to claim 2, characterized in that: The connecting pipe is connected to the flushing pipe, which is connected to the discharge pipe at the rear end of the discharge filter. A flushing control valve is installed on the flushing pipe.

5. A wastewater treatment PAM batching device according to claim 2, characterized in that: Each mixing chamber is equipped with a drain outlet at the bottom, and each drain outlet is connected to the main drain pipe through a drain channel. Each drain channel is equipped with a drain control valve, and the main drain pipe is equipped with a main drain control valve.

6. A wastewater treatment PAM batching device according to claim 5, characterized in that: The overflow port is connected to the overflow pipe, which is connected to the main drain pipe. An overflow control valve is installed on the overflow pipe.

7. A wastewater treatment PAM batching device according to claim 2, characterized in that: The inlet filter and outlet filter are Y-type filters.

8. A wastewater treatment PAM batching device according to claim 7, characterized in that: The aperture of both the filter screen and the sieve in the discharge filter is 0.3~0.8cm.

9. A wastewater treatment PAM batching device according to claim 7, characterized in that: The inlet filter and outlet filter are each provided in pairs, with one for standby and one for use. The two filters in the inlet filter and outlet filter are connected in parallel, and control valves are provided at both ends of each filter.

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