Multistage sedimentation tank for backflow utilization of sludge water

Abstract

The utility model discloses a multistage sedimentation tank for sludge water backflow utilization, which belongs to the technical field of sedimentation tanks and comprises a sedimentation tank I, a sedimentation tank II and a sedimentation tank III which are sequentially distributed, the sedimentation tank I is connected with a water pump I, the water pump I is connected with the sedimentation tank II, the sedimentation tank II is connected with a water pump II, and the water pump II is connected with the sedimentation tank III. The sedimentation tank III is connected with a water pump III; the water pump III is connected with an external reservoir; water inlets of the first water inlet pipe, the second water inlet pipe and the third water inlet pipe are all provided with isolation net cages, water outlets of the first water outlet pipe and the second water outlet pipe are provided with buffer pools, and the buffer pools are connected with a second sedimentation pool / a third sedimentation pool through spiral pipelines; throw-in type liquid level meters are arranged in the sedimentation tank I and the sedimentation tank II and are electrically connected with the electric control cabinet. The multi-stage sedimentation tank for sludge water backflow utilization can perform multi-stage sedimentation, so that the sedimentation efficiency and quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sedimentation tanks, in particular to a multi-stage sedimentation tank for sludge water return utilization. Background Art

[0002] In the process of seawater treatment, the addition of flocculants containing iron usually brings in iron ions, making the discharged sludge water red. The sedimentation method is a traditional method for treating iron-containing wastewater. It uses hydroxide to precipitate iron ions to generate iron hydroxide precipitation. The existing sedimentation method uses a single sedimentation tank, and the sedimentation efficiency is low. In particular, during the continuous discharge of sludge water, the sediment will splash up, making the water with good sedimentation become turbid again. Based on this, the utility model proposes a multi-stage sedimentation tank for sludge water reflux utilization. Utility Model Content

[0003] The utility model aims to provide a multi-stage sedimentation tank for sludge water recycling to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a multi-stage sedimentation tank for sludge water recycling, comprising a sedimentation tank 1, a sedimentation tank 2 and a sedimentation tank 3 which are sequentially distributed, wherein the sedimentation tank 1 is connected to a water pump 1 through a water inlet pipe 1, the water pump 1 is connected to the sedimentation tank 2 through a water outlet pipe 1, the sedimentation tank 2 is connected to a water pump 2 through a water inlet pipe 2, the water pump 2 is connected to the sedimentation tank 3 through a water outlet pipe 2, the sedimentation tank 3 is connected to a water pump 3 through a water inlet pipe 3, and the water pump 3 is connected to an external water storage tank through a water outlet pipe 3; the water inlets of the water inlet pipe 1, the water inlet pipe 2 and the water inlet pipe 3 are all provided with isolation net cages, the water outlets of the water outlet pipe 1 and the water outlet pipe 2 are provided with buffer tanks, and the buffer tanks are connected to the sedimentation tank 2 / the sedimentation tank 3 through spiral pipes; the sedimentation tank 1 and the sedimentation tank 2 are both provided with immersion level gauges, and the immersion level gauges are electrically connected to an electric control cabinet.

[0006] Furthermore, the isolation net cage includes a birdcage-shaped cage frame, and an isolation net is covered on the cage frame; a bottom plate is provided at the bottom of the cage frame, a through hole is opened at the center position of the bottom plate, and a flange is fixedly provided on the outer side wall of the bottom plate.

[0007] Furthermore, the buffer tank is connected to a sewage pump via a sewage pipe.

[0008] Furthermore, the electric control cabinet is electrically connected to the water pump 1 and the water pump 2.

[0009] Furthermore, an overflow pipe is provided in the sedimentation tank three.

[0010] Furthermore, a water inlet is provided in the sedimentation tank.

[0011] Compared with the prior art, the beneficial technical effects of the utility model are:

[0012] The utility model of the multi-stage sedimentation tank for sludge water recycling improves the quality and efficiency of sewage sedimentation treatment through multi-stage sedimentation. In addition, by monitoring the liquid level through the input-type level gauge, excessive sewage in the sedimentation tank can be avoided, and intelligent liquid level control can be achieved; and when the water is discharged from the outlet pipe, the water is directly discharged into the buffer tank for buffering before entering the sedimentation tank to avoid splashing sediment and affecting the sedimentation efficiency. In short, the utility model of the multi-stage sedimentation tank for sludge water recycling can perform multi-stage sedimentation, effectively improving the sedimentation efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 A top view of a multi-stage sedimentation tank for sludge water return utilization in the utility model;

[0015] Figure 2 Installation diagram of the isolation cage;

[0016] Figure 3 It is a schematic diagram of the spiral pipeline structure;

[0017] Figure 4 Schematic diagram of the isolation cage structure;

[0018] Explanation of the reference numerals: 1. Sedimentation tank one; 2. Sedimentation tank two; 3. Sedimentation tank three; 4. Water inlet; 5. Water pump one; 6. Water pump two; 7. Water pump three; 8. Buffer tank; 9. Spiral pipe; 10. Electric control cabinet; 11. Overflow pipe; 12. Isolation cage; 13. Submersible level meter. DETAILED DESCRIPTION

[0019] like Figure 1-4 As shown, a multi-stage sedimentation tank for sludge water recycling utilization includes sedimentation tank 1, sedimentation tank 2 2 and sedimentation tank 3 3 which are distributed in sequence, the sedimentation tank 1 is connected to water pump 1 5 through water inlet pipe 1, the water pump 1 5 is connected to sedimentation tank 2 2 through water outlet pipe 1, the sedimentation tank 2 2 is connected to water pump 2 6 through water inlet pipe 2, the water pump 2 6 is connected to sedimentation tank 3 3 through water outlet pipe 2, the sedimentation tank 3 3 is connected to water pump 3 7 through water inlet pipe 3, and the water pump 3 7 is connected to an external water storage tank through water outlet pipe 3.

[0020] The water inlets of the water inlet pipe 1, the water inlet pipe 2 and the water inlet pipe 3 are all equipped with an isolation cage 12, the isolation cage 12 includes a birdcage-shaped cage frame, and the cage frame is covered with an isolation net, which is used to filter out impurities, etc., to avoid clogging the pipeline and affecting the normal operation of the water pump. A bottom plate is installed at the bottom of the cage frame, a through hole is opened at the center of the bottom plate, and a flange is fixedly installed on the outer wall of the bottom plate, and the flange is easy and quick to install.

[0021] A buffer tank 8 is installed at the outlet of the outlet pipe 1 and the outlet pipe 2, and the buffer tank 8 is connected to the sedimentation tank 2 2 / sedimentation tank 3 3 through a spiral pipe 9. The water pumped out by the water pump directly enters the buffer tank 8. When the water in the buffer tank 8 reaches the water inlet of the spiral pipe 9, it enters the sedimentation tank below along the spiral pipe 9, avoiding the impact of high water flow on the sedimentation tank, thereby avoiding the sedimentation tank from becoming turbid again and improving the sedimentation efficiency.

[0022] Both the sedimentation tank 1 1 and the sedimentation tank 2 2 are equipped with a immersion type liquid level meter 13 , and the immersion type liquid level meter 13 is electrically connected to the electric control cabinet 10 .

[0023] The buffer tank 8 is connected to a sewage pump via a sewage pipe for periodically flushing the buffer tank 8 .

[0024] The electric control cabinet 10 is electrically connected to the water pump 1 5 and the water pump 2 6 .

[0025] An overflow pipe 11 is installed in the sedimentation tank 3.

[0026] A water inlet 4 is installed in the sedimentation tank 1.

[0027] The action process of the utility model is as follows:

[0028] First, sewage enters the sedimentation tank 1 from the water inlet 4 for sedimentation. When the water level reaches the specified position, the immersion level meter 13 transmits a signal to the electric control cabinet 10. The electric control cabinet 10 controls the water pump 5 to start pumping water, only pumping the upper clean water, and repeating this cycle until it reaches the sedimentation tank 3 3. The water in the sedimentation tank 3 3 is pumped to the water storage tank for reuse as needed. When the liquid level is high, it can be freely discharged through the overflow pipe 11.

[0029] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-stage sedimentation tank for sludge water recycling, characterized in that: The invention comprises a sedimentation tank 1 (1), a sedimentation tank 2 (2) and a sedimentation tank 3 (3) which are sequentially arranged, wherein the sedimentation tank 1 (1) is connected to a water pump 1 (5) via a water inlet pipe 1, the water pump 1 (5) is connected to the sedimentation tank 2 (2) via a water outlet pipe 1, the sedimentation tank 2 (2) is connected to a water pump 2 (6) via a water inlet pipe 2, the water pump 2 (6) is connected to the sedimentation tank 3 (3) via a water outlet pipe 2, the sedimentation tank 3 (3) is connected to a water pump 3 (7) via a water inlet pipe 3, the water pump 3 (7) is connected to the sedimentation tank 3 (3 ...2) via a water outlet pipe 1. The outlet pipe 3 is connected to an external water storage tank; the water inlets of the water inlet pipe 1, the water inlet pipe 2 and the water inlet pipe 3 are all provided with an isolation cage (12); the water outlets of the water outlet pipe 1 and the water outlet pipe 2 are provided with a buffer tank (8); the buffer tank (8) is connected to the sedimentation tank 2 (2) / sedimentation tank 3 (3) through a spiral pipe (9); the sedimentation tank 1 (1) and the sedimentation tank 2 (2) are both provided with an immersion type liquid level meter (13), and the immersion type liquid level meter (13) is electrically connected to an electric control cabinet (10).

2. The multi-stage sedimentation tank for sludge water recycling according to claim 1 is characterized in that: The isolation net cage (12) comprises a birdcage-shaped cage frame, on which an isolation net is covered; a bottom plate is provided at the bottom of the cage frame, a through hole is opened at the center of the bottom plate, and a flange is fixedly provided on the outer side wall of the bottom plate.

3. The multi-stage sedimentation tank for sludge water recycling according to claim 1 is characterized in that: The buffer tank (8) is connected to a sewage pump via a sewage pipe.

4. The multi-stage sedimentation tank for sludge water recycling according to claim 1 is characterized in that: The electric control cabinet (10) is electrically connected to the water pump 1 (5) and the water pump 2 (6).

5. The multi-stage sedimentation tank for sludge water recycling according to claim 1 is characterized in that: An overflow pipe (11) is provided in the sedimentation tank three (3).

6. The multi-stage sedimentation tank for sludge water recycling according to claim 1 is characterized in that: A water inlet (4) is provided in the sedimentation tank (1).

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