High-density pool sludge dewatering machine online dilution system

Abstract

The utility model discloses a kind of high-density pool sludge dewatering machine online dilution systems, including high-density pool, online dilution unit, coagulant adding unit and centrifugal sludge remover, the bottom of high-density pool is led out with sludge pipeline, sludge pump is arranged on the sludge pipeline, the sludge pipeline is connected to the centrifugal sludge remover, the online dilution unit includes static mixer, water inlet pipe, sludge concentration instrument, flowmeter and control system, the static mixer the sludge concentration instrument and the flowmeter are sequentially arranged on the sludge pipeline along the high-density pool to the centrifugal sludge remover direction, the static mixer is connected the water inlet pipe, electric control valve is arranged on the water inlet pipe. The technical scheme is used to solve the problem that the existing sludge dewatering machine needs to rely on sludge conditioning tank, equipment cost is higher and space occupies big.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, specifically relating to an online dilution system for a high-density sludge dewatering machine. Background Technology

[0002] In power plant raw water treatment systems, high-density sedimentation tanks (referred to as "HDTs") are key equipment for sludge separation. The sludge discharged from these tanks needs to be dewatered to reduce its volume. In traditional processes, to ensure the stable operation of the sludge dewatering machine, sludge collection tanks and sludge equalization tanks are usually set up. Through buffering and homogenization treatments, the sludge concentration and flow rate are adjusted to the design range of the dewatering machine (e.g., centrifugal dewatering machines often require an influent sludge concentration of 2% to 4%).

[0003] However, in scenarios where land is limited (such as some power plants simplifying their raw water treatment systems due to land constraints), eliminating sludge collection and equalization tanks and directly sending the sludge from the high-density tanks into centrifugal sludge dewatering machines presents the following technical challenges: Sludge concentration exceeds the standard and fluctuates greatly: The sludge concentration from the high-density tank is usually 2% to 8%, which is far beyond the design standard of the dewatering machine. In addition, due to the limitations of water flow conditions (such as the high water flow velocity and short residence time in the high-density tank, a large amount of coagulant needs to be added to form a dense sludge layer), the sludge is extremely sticky, which further aggravates the problem of unstable concentration. Dewatering machine malfunction: Excessive sludge concentration and flow fluctuations cause abnormally high torque in the dewatering machine, which can easily lead to drum blockage. Frequent manual intervention is required to adjust parameters (such as manual start-up, shutdown, and cleaning), making it impossible to achieve automated operation. Limitations of traditional solutions: If sludge collection tanks and equalization tanks are added again, not only will the equipment cost (about 300,000 yuan) and floor space (at least 80m²) be increased, but the sludge blockage problem caused by high viscosity sludge will not be solved, manual intervention will still be required, and the operating energy consumption will be high.

[0004] Therefore, the existing technology lacks a control scheme that can achieve direct feeding of sludge from high-density tanks into dewatering machines and stable, fully automatic operation without relying on traditional sludge equalization tanks, which restricts the compact, efficient, and intelligent development of raw water treatment systems. Utility Model Content

[0005] To address the issues of existing sludge dewatering machines requiring sludge equalization tanks for sludge feeding, resulting in high equipment costs and large space requirements, this utility model provides an online dilution system for high-density tank sludge dewatering machines.

[0006] This utility model provides an online dilution system for a high-density sludge dewatering machine, including a high-density tank, an online dilution unit, a coagulant addition unit, and a centrifugal dewatering machine. A sludge pipe extends from the bottom of the high-density tank, and a sludge pump is installed on the sludge pipe. The sludge pipe connects to the centrifugal dewatering machine. The online dilution unit includes a static mixer, an inlet pipe, a sludge concentration meter, a flow meter, and a control system. The static mixer, the sludge concentration meter, and the flow meter are sequentially arranged on the sludge pipe along the direction from the high-density tank to the centrifugal dewatering machine. The static mixer is connected to the inlet pipe, and an electrically controlled valve is installed on the inlet pipe. The control system is electrically connected to the sludge concentration meter, the flow meter, and the electrically controlled valve. The coagulant addition unit is installed at the inlet of the centrifugal dewatering machine.

[0007] Furthermore, the coagulant addition unit includes a coagulant pipeline and a coagulant pump, a control valve, and a coagulant flow meter installed on the coagulant pipeline.

[0008] Furthermore, there are two high-density tanks, which are connected in parallel, and each of the two high-density tanks is equipped with a sludge pump.

[0009] This high-density sludge dewatering machine's online dilution system integrates a high-density tank, an online dilution unit, a coagulant addition unit, and a centrifugal dewatering machine to construct a complete sludge dewatering process. The online dilution unit, through the coordinated operation of a static mixer, inlet pipe, sludge concentration meter, flow meter, and control system, can monitor and automatically adjust the sludge concentration in real time, eliminating the need for manual intervention. This ensures a stable sludge concentration entering the centrifugal dewatering machine, adapting to its operating requirements and improving dewatering efficiency and effectiveness. The control system, based on feedback from the sludge concentration meter and flow meter, precisely controls the opening of the electrically controlled valves, achieving precise and intelligent online sludge dilution. This solves the problem of large fluctuations in sludge concentration from the high-density tank affecting the operation of the dewatering machine, ensuring stable and efficient operation and reducing equipment failures and energy waste caused by unsuitable concentrations. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the online dilution system for a high-density sludge dewatering machine. Detailed Implementation

[0012] This utility model discloses an online dilution system for a high-density sludge dewatering machine.

[0013] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0014] See Figure 1 As shown, this utility model discloses an online dilution system for a high-density sludge dewatering machine, including a high-density tank 1, an online dilution unit 4, a coagulant addition unit, and a centrifugal desludge dewatering machine 14. A sludge pipe 3 extends from the bottom of the high-density tank 1, and a sludge pump 2 is installed on the sludge pipe 3. The sludge pipe 3 is connected to the centrifugal desludge dewatering machine 14. The online dilution unit 4 includes a static mixer 8, an inlet pipe 6, a sludge concentration meter 7, a flow meter 9, and a control system. The static mixer 8, the sludge concentration meter 7, and the flow meter 9 are sequentially arranged on the sludge pipe 3 along the direction from the high-density tank 1 to the centrifugal desludge dewatering machine 14. The static mixer 8 is connected to the inlet pipe 6, and an electrically controlled valve is installed on the inlet pipe 6. The control system is electrically connected to the sludge concentration meter 7, the flow meter 9, and the electrically controlled valve. The coagulant addition unit is installed at the inlet of the centrifugal desludge dewatering machine 14.

[0015] This high-density tank 1 sludge dewatering machine online dilution system integrates the high-density tank 1, online dilution unit 4, coagulant addition unit, and centrifugal dewatering machine 14 to construct a complete sludge dewatering process. The online dilution unit 4, with the assistance of a static mixer 8, inlet pipe 6, sludge concentration meter 7, flow meter 9, and control system, can monitor and automatically adjust the sludge concentration in real time without manual intervention, ensuring a stable sludge concentration entering the centrifugal dewatering machine 14, adapting to the machine's operating requirements, and improving dewatering efficiency and effectiveness. The control system, based on feedback from the sludge concentration meter 7 and flow meter 9, precisely controls the opening of the electronically controlled valves, achieving precise and intelligent online sludge dilution. This solves the problem of large fluctuations in sludge concentration from the high-density tank 1 affecting the operation of the dewatering machine, ensuring stable and efficient operation, and reducing equipment failures and energy waste caused by unsuitable concentrations.

[0016] The coagulant addition unit includes a coagulant pipeline 10 and a coagulant pump 11, a control valve 12 and a coagulant flow meter 13 installed on the coagulant pipeline 10.

[0017] This high-density tank 1 sludge dewatering machine online dilution system integrates the high-density tank 1, online dilution unit 4, coagulant addition unit, and centrifugal dewatering machine 14 to construct a complete sludge dewatering process. The online dilution unit 4, with the assistance of a static mixer 8, inlet pipe 6, sludge concentration meter 7, flow meter 9, and control system, can monitor and automatically adjust the sludge concentration in real time without manual intervention, ensuring a stable sludge concentration entering the centrifugal dewatering machine 14, adapting to the machine's operating requirements, and improving dewatering efficiency and effectiveness. The control system, based on feedback from the sludge concentration meter 7 and flow meter 9, precisely controls the opening of the electronically controlled valves, achieving precise and intelligent online sludge dilution. This solves the problem of large fluctuations in sludge concentration from the high-density tank 1 affecting the operation of the dewatering machine, ensuring stable and efficient operation, and reducing equipment failures and energy waste caused by unsuitable concentrations.

[0018] The system comprises two high-density tanks 1, which are connected in parallel, and each high-density tank 1 is equipped with a sludge pump 2. The parallel operation of the two high-density tanks 1 allows for a balanced distribution of the sludge treatment load between the two tanks through the rational allocation of the sludge pump 2 operation, optimizing sludge treatment scheduling. Combined with online dilution and coagulant addition units, this enables the system to treat sludge more efficiently and stably under multi-tank collaboration, improving overall treatment capacity and efficiency.

[0019] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An online dilution system for a high-density sludge dewatering machine, characterized in that, The system includes a high-density tank, an online dilution unit, a coagulant addition unit, and a centrifugal desludge dewatering machine. A sludge pipe extends from the bottom of the high-density tank, and a sludge pump is installed on the sludge pipe. The sludge pipe connects to the centrifugal desludge dewatering machine. The online dilution unit includes a static mixer, an inlet pipe, a sludge concentration meter, a flow meter, and a control system. The static mixer, the sludge concentration meter, and the flow meter are sequentially arranged on the sludge pipe along the direction from the high-density tank to the centrifugal desludge dewatering machine. The static mixer is connected to the inlet pipe, and an electrically controlled valve is installed on the inlet pipe. The control system is electrically connected to the sludge concentration meter, the flow meter, and the electrically controlled valve. The coagulant addition unit is installed at the inlet of the centrifugal desludge dewatering machine.

2. The online dilution system for a high-density sludge dewatering machine according to claim 1, characterized in that, The coagulant addition unit includes a coagulant pipeline and a coagulant pump, a control valve, and a coagulant flow meter installed on the coagulant pipeline.

3. The online dilution system for a high-density sludge dewatering machine according to claim 1, characterized in that, The number of high-density tanks is two, and the two high-density tanks are arranged in parallel, and each of the two high-density tanks is equipped with a sludge pump.

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