CN101759342A - Sludge vacuum subcharge combined compressing and dewatering device - Google Patents

Abstract

The present invention discloses a sludge vacuum subcharge combined compression and dewatering device. The device comprises a compression tank, a framework, a vacuum device and a sewage buffer tank, wherein sludge is compressed in the compression tank, and a drain pipe communicated to the sewage buffer tank is arranged on the inner bottom of the tank; the framework is arranged in the compression tank, the vacuum device connected with the sewage buffer tank is arranged outside the compression tank, and the vacuum device comprises a geomembrane and a vacuum pump. The compression tank is closed by the geomembrane, the compression tank is vacuumized by the vacuum pump to produce negative pressure under the geomembrane, and water in the sludge in the compression tank is sucked out, led to the sewage buffer tank and discharged. The use of the dewatering device can largely shorten the dewatering period of the sludge and achieve the purposes of low investment and high efficiency.

Description

Sludge vacuum loading combined compression dehydration device

technical field

The invention relates to sludge treatment equipment, in particular to a sludge vacuum loading combined compression dehydration device for sludge dewatering.

Background technique

With the rapid development of my country's economic construction, sewage discharge and sludge production have increased dramatically. Sludge has a high water content and must be dehydrated before it can be disposed of innocuously. The existing sludge dewatering equipment, including extrusion, centrifugal and heating equipment, is not only expensive and complex in structure, but also consumes a lot of energy during operation, resulting in high economic costs, and the treatment efficiency is not very high, and the single treatment volume is small , which is difficult to handle on a large scale.

Contents of the invention

The purpose of the present invention is to provide a novel, economical and effective sludge vacuum loading combined compression dehydration device, which can realize large-scale sludge dehydration treatment and provide prerequisites for subsequent sludge disposal and utilization.

In order to achieve the above object, the technical solution of the present invention is: a sludge vacuum loading combined compression dehydration device, which includes a compression pool, a frame, a vacuum device and a sewage buffer tank; wherein,

The compression pool provides a place for sludge compression, and the bottom of the pool is equipped with drainage pipelines and connected to the sewage buffer tank outside the compression pool; the frame is placed in the compression pool, and the vacuum device is located in the compression pool. Outside the compression tank, it includes a geomembrane and a vacuum pump. The vacuum pump communicates with the sewage buffer tank so that the geomembrane can close the compression tank. The vacuum pump will cause negative pressure under the geomembrane to make the sludge in the compression tank Moisture is sucked out and introduced into the sewage buffer tank.

The compression pool is made of reinforced concrete.

A filter layer is laid on the bottom of the compression pool, and the filter layer is composed of gravel cushion, geogrid and non-woven fabric.

The frame is welded by steel bars, a layer of geonet with filter membrane is fixed on the inner side, and suspension rings are provided at the top corners of the frame.

A stacking device can be placed on the geomembrane to further compress the sludge and discharge water.

The stacking device is composed of a loading plate and concrete blocks.

The bottom of the sewage buffer tank is provided with a drain valve.

By adopting the above scheme, the present invention has the function of concentrating sludge, making full use of the vacuum negative pressure formed by the vacuum pump and the pressure provided by the stacking device, so that the sludge under the geomembrane can be compressed, and the moisture in the sludge can enter the compression layer through the filter layer. The drainage pipeline in the pool is introduced into the sewage buffer tank. The use of this device can greatly shorten the sludge dewatering cycle, with high efficiency, low energy consumption, and large processing capacity, which solves the problem of large investment, long time and land occupation of conventional sludge dehydration methods. The problem of large area provides a new way for sludge disposal.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

As shown in Figure 1, it is a preferred embodiment of the sludge vacuum loading combined compression dehydration device of the present invention, which is composed of a compression pool 1, a filter layer 2, a frame 3, a vacuum device 4, a sewage buffer tank 5 and a loading device 6 composition; among them,

The compression tank 1 is made of reinforced concrete to provide a place for sludge compression, and a drainage pipeline 11 is arranged at the bottom of the tank, and the drainage pipeline 11 is connected to the sewage buffer tank 5 outside the compression tank 1; the filter layer 2 is formed by a gravel pad Layer 21, geogrid 22 and non-woven fabric 23 are formed and laid on the bottom of the compression pool 1 in order, so that the crushed stone cushion 21 is located at the bottom layer, the laying thickness is 20cm, and the diameter of the crushed stone is 3-6cm, and The geogrid 22 is laid on the gravel cushion 21 to balance the stress and prevent uneven settlement, and the non-woven fabric 23 is laid on the top, and the sewage is filtered by the filter layer 2 and then flows into the drainage pipeline 11 of the compression pool 1 Middle; the frame 3 is placed in the compression pool 1 for containing sludge, and is welded by steel bars, with a gap of 10 cm between holes, and a layer of geonet 31 with a filter membrane is fixed on the inside of the frame 3 for reverse filtration. The geonet 31 includes a cavity portion 311 fixed on the inner surface of the frame 3 and a cover portion 312 covering the top of the cavity portion 311. The top corner of the frame is provided with a lifting ring 32, which is convenient for lifting equipment to lift the frame 3; the vacuum device 4. It includes a geomembrane 41 and a vacuum pump 42. The geomembrane 41 seals the compression pool 1, and the vacuum pump 42 is started to evacuate the geomembrane to generate negative pressure under the geomembrane, so that the water in the sludge is sucked out and introduced into the sewage buffer tank 5 through the drainage pipeline 11 , the vacuum pump 42 is located outside the sludge compression tank 1, the sewage buffer tank 5 is connected with the vacuum pump 42 through the drainage pipeline 12, the sewage buffer tank 5 is a cylindrical iron cylinder, and the bottom is provided with a drain valve for discharging sewage; The device 6 is composed of a loading plate 61 and a concrete block 62 stacked on the top of the loading plate 61. When the sludge in the compression tank 1 reaches a certain degree of consolidation, the stacking device 6 is placed on the geomembrane 41 to further compress the sludge. The mud discharges water to achieve the best dehydration effect.

Adopt above-mentioned device operating principle of the present invention is:

Sludge is poured in the cavity part 311 of the geonet 31 that is positioned at the compression tank 1, then the lid portion 312 of the geonet 31 is laid on the sludge top, and then the geomembrane 41 is laid on the top of the compression tank 1, and the geomembrane The surroundings of 41 are embedded in the soil around the compression pool to close the compression pool 1, and the geomembrane 41 in the compression pool 1 is reserved for a certain extensible length in order to prepare for the sludge to sink; start the vacuum pump 42 to evacuate the geomembrane 41 At the same time, the external air exerts atmospheric pressure on the geomembrane 41, so that the water in the sludge in the compression pool 1 is sucked out, filtered through the filter layer 2 at the bottom of the compression pool 1, and enters the drainage pipeline 11 at the bottom of the pool. The pipeline 11 introduces the sewage into the sewage buffer tank 5 and then discharges it. After the sludge in the compression tank 1 reaches a certain degree of consolidation after dehydration, a stacking device 6 (that is, a loading plate 61 and a concrete block) is added on the geomembrane 41. 62) Further compress the sludge, so that the water in the sludge is further discharged under the action of additional stress. When the sludge is dehydrated to a predetermined degree of consolidation, the lifting device unloads the stacking device 6 and lifts The frame 3 that is equipped with the consolidated sludge dumps the sludge into other transportation equipment for follow-up treatment.

The key of the present invention is to make full use of the vacuum pump 42 to form a vacuum negative pressure and the pressure provided by the stacking device, and jointly apply the sludge under the geomembrane to be compressed and dehydrated, so that the moisture in the sludge enters the drain pipe in the pool through the filter layer 2 , and introduced into the sewage buffer tank 5, and at the same time cooperate with the vertical drainage pipe provided in the sludge compression tank of the present invention to form a through system with the horizontal drainage pipe to further increase the dehydration efficiency, so the use of this device can greatly shorten the sludge dehydration time. Cycle time, small investment, high efficiency, low energy consumption, large processing capacity, and not limited by seasons and climates, solves the problems of large investment, long time and large floor area of conventional sludge dewatering methods, and provides sludge disposal a new way.

Claims (7)

1. The utility model provides a mud vacuum is piled up and is carried joint compression dewatering device which characterized in that: comprises a compression tank, a frame, a vacuum device and a sewage buffer tank; wherein,

the compression tank provides a sludge compression place, and a drainage pipeline is arranged at the bottom in the compression tank and communicated to the sewage buffer tank outside the compression tank; the frame is arranged in the compression tank, the vacuum device is positioned outside the compression tank and comprises a geomembrane and a vacuum pump, the vacuum pump is communicated with the sewage buffer tank, the geomembrane is enabled to seal the compression tank, and the vacuum pump is used for vacuumizing to generate negative pressure under the geomembrane, so that the moisture in the sludge in the compression tank is sucked out and introduced into the sewage buffer tank.

2. The sludge vacuum loading combined compression dewatering device of claim 1, characterized in that: the compression tank is made of reinforced concrete.

3. The sludge vacuum loading combined compression dewatering device of claim 1, characterized in that: and a filter layer is laid at the bottom of the compression tank and consists of a gravel cushion layer, a geogrid and non-woven fabrics.

4. The sludge vacuum loading combined compression dewatering device of claim 1, characterized in that: the frame is formed by welding reinforcing steel bars, a layer of geotechnical net with a filter membrane is fixed on the inner side of the frame, and lifting rings are arranged at the top corners of the frame.

5. The sludge vacuum loading combined compression dewatering device of claim 1, characterized in that: a ballast device may be placed on the geomembrane to further compress the sludge to remove moisture.

6. The sludge vacuum stacking combined compression dewatering device according to claim 5, characterized in that: the stacking device consists of a loading plate and a concrete block.

7. The sludge vacuum loading combined compression dewatering device of claim 1, characterized in that: and a drain valve is arranged at the bottom of the sewage buffer tank.

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