Sludge treatment device

Abstract

The utility model relates to a sludge treatment device and belongs to the field of sludge treatment. Sludge is discharged into a sludge thickening tank to be settled and dewatered and then enters a centrifugal dewatering machine to be secondarily dewatered, the dewatered sludge enters a sludge buffering bin, a hydraulic arch breaking sliding frame is arranged in the sludge buffering bin, the sludge buffering bin is connected with a double-shaft screw conveyor through a pipeline, the double-shaft screw conveyor is connected with a sludge plunger pump through a pipeline, and the sludge plunger pump is connected with the sludge thickening tank through a pipeline. And the sludge plunger pump is connected with a boiler through a pipeline. The sludge treatment device disclosed by the utility model is relatively high in safety and automation degree, and the workload is reduced. Secondary waste gas generated after the sludge is incinerated in the boiler is treated in the flue gas treatment section of the boiler, a secondary treatment device does not need to be additionally arranged, and the treatment cost is reduced.

Description

Technical Field

[0001] The utility model relates to a sludge treatment device, belonging to the field of sludge treatment. Background Art

[0002] Wastewater treatment methods can generally be categorized as physical, chemical, physicochemical, and biological. These methods inevitably produce sludge during wastewater treatment. This sludge is typically first dehydrated and reduced in volume before being further processed through methods such as incineration, extrusion drying, thermal drying, solidification, incineration, and landfill.

[0003] In the process of sludge treatment, the above-mentioned mainstream treatment processes will not only increase energy and material consumption, but also generate waste gas or waste. The generated waste and waste gas need to be reprocessed, which is very likely to cause environmental pollution. Summary of the Invention

[0004] According to the background problem, the problem to be solved by the present invention is:

[0005] The waste and exhaust gas generated by existing chemical and other types of production equipment need to be treated, but their treatment equipment is scattered and duplicated; the treatment process will produce secondary waste and exhaust gas, which requires secondary treatment. The process is cumbersome and increases energy consumption and costs.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A sludge treatment device includes a dewatering system and a sludge conveying system, the dewatering system includes a sludge thickening tank and a centrifugal dewatering machine, the sludge conveying system includes a sludge buffer bin, a hydraulic arch breaking slide, a hydraulic maintenance gate, a double-axis screw conveyor and a sludge plunger pump; the sludge is discharged into the sludge thickening tank for sedimentation and dehydration, and then enters the centrifugal dewatering machine for secondary dehydration, and the dehydrated sludge enters the sludge buffer bin, the sludge buffer bin is provided with a hydraulic arch breaking slide, the sludge buffer bin is connected to the double-axis screw conveyor through a pipeline, the double-axis screw conveyor is connected to the sludge plunger pump through a pipeline, and the sludge plunger pump is connected to the boiler through a pipeline; a hydraulic maintenance gate is provided on the pipeline between the sludge buffer bin and the double-axis screw conveyor, the sludge plunger pump outlet pipeline is connected to a lubricating water pump, the sludge plunger pump outlet pipeline is provided with a pressure gauge, and the pressure gauge is electrically connected to the lubricating water pump.

[0008] Preferably, two or more dehydration systems may be provided.

[0009] Preferably, when the pressure value measured by the pressure gauge reaches 7 MPa, the lubrication water pump is interlocked and started.

[0010] Preferably, the hydraulic arch-breaking slides are provided with two sets, the hydraulic inspection gates are provided with two sets, and the two hydraulic inspection gates are arranged in parallel.

[0011] The sludge generated by the sewage treatment plant is dehydrated by a centrifugal sludge dewatering machine to reduce its moisture content. The sludge is then transported to the boiler sludge silo via a dedicated pipeline using a sludge plunger pump. Further sludge plunger pumps are used to transport the sludge to the top of the boiler for incineration. A pressure interlock system is installed at the sludge plunger pump outlet. If the alarm pressure exceeds the set value, the lubrication water pump automatically starts and injects lubrication water into the sludge pipeline at the plunger pump outlet to reduce pipeline resistance.

[0012] The beneficial effects of the utility model are:

[0013] The harmless treatment of sludge can minimize the pollution to the environment and reduce the cost of sludge treatment.

[0014] The sludge treatment device has a high degree of safety and automation, which reduces workload.

[0015] The secondary waste gas generated after the sludge is incinerated in the boiler is treated in the flue gas treatment section of the boiler, without the need for additional secondary treatment equipment, thus reducing treatment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of sludge treatment device

[0017] In the figure: 1 is a sludge thickening tank; 2 is a centrifugal dewatering machine; 3 is a sludge buffer bin; 4 is a hydraulic arch-breaking slide; 5 is a hydraulic maintenance gate; 6 is a double-axis screw conveyor; 7 is a sludge plunger pump; 8 is a boiler; 9 is a lubricating water pump; and 10 is a pressure gauge. DETAILED DESCRIPTION

[0018] Example 1

[0019] A sludge treatment device includes a dewatering system and a sludge conveying system. The dewatering system includes a sludge thickening tank 1 and a centrifugal dewatering machine 2. The sludge conveying system includes a sludge buffer bin 3, a hydraulic arch breaking slide 4, a hydraulic maintenance gate 5, a double-axis screw conveyor 6 and a sludge plunger pump 7. The sludge is discharged into the sludge thickening tank 1 for sedimentation and dehydration, and then enters the centrifugal dewatering machine 2 for secondary dehydration. The dehydrated sludge enters the sludge buffer bin 3. The sludge buffer bin 3 is provided with a hydraulic arch breaking slide 4. The sludge buffer bin 3 is connected to the double-axis screw conveyor 6 through a pipeline. The double-axis screw conveyor 6 is connected to the sludge plunger pump 7 through a pipeline. The sludge plunger pump 7 is connected to a boiler 8 through a pipeline. A hydraulic maintenance gate 5 is provided on the pipeline between the sludge buffer bin 3 and the double-axis screw conveyor 6. The outlet pipeline of the sludge plunger pump 7 is connected to a lubricating water pump 9. A pressure gauge 10 is provided on the outlet pipeline of the sludge plunger pump 7, and the pressure gauge 10 is electrically connected to the lubricating water pump 9.

[0020] The dehydration system can be provided with two or more sets.

[0021] When the pressure value measured by the pressure gauge 10 reaches 7 MPa, the lubricating water pump 9 is interlocked and started.

[0022] The hydraulic arch-breaking slide 4 is provided with two sets, the hydraulic maintenance gate 5 is provided with two sets, and the two hydraulic maintenance gates 5 are arranged in parallel.

[0023] The utility model sludge treatment device has high safety and automation, reduces workload. The secondary exhaust gas generated after the sludge is incinerated in the boiler 8 is treated in the flue gas treatment section of the boiler 8, without the need for additional secondary treatment equipment, reducing treatment costs.

Claims

1. A sludge treatment device, characterized in that: The invention comprises a dewatering system and a sludge conveying system, wherein the dewatering system comprises a sludge thickening tank (1) and a centrifugal dewatering machine (2), and the sludge conveying system comprises a sludge buffer bin (3), a hydraulic arch breaking slide (4), a hydraulic maintenance gate (5), a double-axis screw conveyor (6) and a sludge plunger pump (7); the sludge is discharged into the sludge thickening tank (1) for sedimentation and dewatering, and then enters the centrifugal dewatering machine (2) for secondary dewatering, and the dewatered sludge enters the sludge buffer bin (3), wherein the sludge buffer bin (3) is provided with a hydraulic arch breaking slide (4), and the sludge buffer bin (3) is provided with a hydraulic arch breaking slide (4). The sludge buffer bin (3) is connected to a double-shaft screw conveyor (6) through a pipeline, the double-shaft screw conveyor (6) is connected to a sludge plunger pump (7) through a pipeline, and the sludge plunger pump (7) is connected to a boiler (8) through a pipeline; a hydraulic maintenance gate (5) is provided on the pipeline between the sludge buffer bin (3) and the double-shaft screw conveyor (6), the outlet pipeline of the sludge plunger pump (7) is connected to a lubricating water pump (9), the outlet pipeline of the sludge plunger pump (7) is provided with a pressure gauge (10), and the pressure gauge (10) is electrically connected to the lubricating water pump (9).

2. A sludge treatment device according to claim 1, characterized in that: The dehydration system can be provided with two or more sets.

3. A sludge treatment device according to claim 1, characterized in that: When the pressure value measured by the pressure gauge (10) reaches 7 MPa, the lubricating water pump (9) is started through interlocking.

4. A sludge treatment device according to claim 1, characterized in that: The hydraulic arch-breaking slides (4) are provided with two sets, the hydraulic maintenance gates (5) are provided with two sets, and the two hydraulic maintenance gates (5) are arranged in parallel.

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