Sewage float sludge collecting and recycling system

Abstract

The utility model discloses a sewage float sludge collection and recovery system, the sewage float sludge collection system comprises a float sludge pusher, the float sludge pusher comprises a power mechanism and a scraper, and the power mechanism drives the scraper to move on the sewage liquid level; the mud-water separator comprises an extrusion cavity and a flow guide column rotationally arranged in the extrusion cavity, spiral blades are arranged on the side face of the flow guide column, and the outer diameter of the flow guide column is gradually increased from the small-diameter end of the flow guide column to the large-diameter end of the flow guide column; and the sludge collecting tank is used for receiving the float sludge discharged by the float sludge pusher and the sludge-water separator. The sewage float sludge recovery system comprises the sewage float sludge collection system. According to the sewage float sludge collecting system, float sludge on the surface of sewage in the Fenton box is scraped away by utilizing the float sludge pusher, and sludge is separated from sewage near the liquid level by utilizing the sludge-water separator, so that the float sludge is scraped more cleanly. According to the sewage float sludge recovery system, the collected sewage float sludge can be separated and dried again, sewage in the sewage float sludge flows back to the Fenton box for subsequent sewage purification, and waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen waste treatment, and particularly relates to a sewage floating sludge collection and recovery system. Background Art

[0002] At present, the amount of kitchen waste collection and transportation is large, and the anaerobic fermentation residence time is relatively long. During the anaerobic digestion of kitchen wastewater, high-concentration ammonia nitrogen is easily generated, which is likely to inhibit the subsequent sewage biochemical system. Therefore, for such kitchen waste, multiple filtration is generally used to separate impurities and denitrify and nitrify the sewage.

[0003] The current kitchen waste treatment route is: "regulation tank + two-phase centrifuge + microfilter + sedimentation tank + high-efficiency denitrification tank + denitrification tank (A) + nitrification tank (O) + ultrafiltration (UF) + sludge thickening tank + two-phase centrifuge / plate and frame filter press + Fenton tank + tail water tank". In actual operation, it is found that a large area of floating sludge is likely to accumulate on the surface when the Fenton tank is mixed, left standing and sedimented, which is likely to cause the overflow port to be blocked. At the same time, it may lead to excessive suspended solids in the tail water and many problems such as non-compliance with discharge indicators.

[0004] In this regard, the existing method for solving floating sludge is to manually dredge the sludge. There is no sunshade and rain shelter facility at the sludge dredging operation site, and the operation environment is harsh. When manually dredging floating sludge, it is necessary to stand on the top of the Fenton tank and open the manhole cover for dredging, which poses a risk that the operators and tools may fall into the Fenton tank. At the same time, the dredged floating sludge needs to be manually bagged and incinerated, with a large amount of labor. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a sewage floating sludge collection system capable of collecting the floating sludge on the surface of the sewage in the Fenton tank.

[0006] The present invention further provides a sewage floating sludge recovery system having the above sewage floating sludge collection system, which is capable of recycling the collected floating sludge again.

[0007] According to a first aspect embodiment of the present invention, the sewage floating sludge collection system includes:

[0008] A floating sludge pusher, which includes a power mechanism and a scraper. The power mechanism drives the scraper to move on the sewage liquid surface, and the scraper can push the floating sludge on the sewage liquid surface in the Fenton tank;

[0009] A sludge-water separator, which includes an extrusion chamber and a diversion column rotatably arranged in the extrusion chamber. A water inlet pipe communicating with a Fenton tank is provided at the first end of the extrusion chamber, and a slag discharge pipe is provided at the second end of the extrusion chamber. Threads are provided on the side surface of the diversion column. The outer diameter of the diversion column gradually increases from the small-diameter end to the large-diameter end of the diversion column. The small-diameter end of the diversion column is close to the first end of the extrusion chamber, and the large-diameter end of the diversion column is close to the second end of the extrusion chamber.

[0010] A sludge collection tank, which is installed on the top of the Fenton tank and receives the floating sludge pushed by the floating sludge pusher. The slag discharge pipe of the sludge-water separator is connected to the sludge collection tank.

[0011] The sewage floating sludge collection system according to the embodiment of the present invention has at least the following beneficial effects: The floating sludge pusher is used to scrape the floating sludge on the surface of the sewage in the Fenton tank, and at the same time, the sludge-water separator is used to separate the sludge from the sewage near the liquid surface, so that the floating sludge is scraped more cleanly.

[0012] According to some embodiments of the present invention, the power mechanism includes a pulley block and a traction chain. The traction chain is wound around each pulley in the pulley block to form a chain drive. There are multiple scrapers and they are equidistantly installed on the traction chain.

[0013] According to some embodiments of the present invention, the power mechanism further includes a motor and a transmission chain. The transmission chain is wound around the output shaft of the motor and one of the pulleys in the pulley block, and the motor drives the pulley in the pulley block to rotate through the transmission chain.

[0014] According to some embodiments of the present invention, the floating sludge pusher further includes a support plate, and the support plate is used to support the traction chain.

[0015] According to some embodiments of the present invention, the power mechanism includes a pulley block and a traction belt. The traction belt is wound around each pulley in the pulley block to form a belt drive. There are multiple scrapers and they are equidistantly installed on the traction belt.

[0016] According to some embodiments of the present invention, the power mechanism further includes a motor and a transmission belt. The transmission belt is wound around the output shaft of the motor and one of the pulleys in the pulley block, and the motor drives the pulley in the pulley block to rotate through the transmission belt.

[0017] According to some embodiments of the present invention, the floating sludge pusher further includes a support plate, and the support plate is used to support the traction belt.

[0018] According to some embodiments of the present invention, a drain pipe is provided at the bottom of the extrusion chamber, a filter screen is provided between the drain pipe and the extrusion chamber, and the liquid water squeezed out in the extrusion chamber is discharged from the drain pipe.

[0019] The sewage floating sludge recovery system according to the second aspect embodiment of the present invention includes the above-mentioned sewage floating sludge collection system, as well as a sludge thickening tank and a sludge separation system. The sludge collection tank is connected to the sludge thickening tank and conveys sludge to it. The sludge thickening tank is connected to the sludge separation system to further dry the sludge. The sludge separation system is provided with a water pipe for collecting water and is connected to the Fenton tank.

[0020] The sewage floating sludge recovery system according to the embodiments of the present invention has at least the following beneficial effects: it can separate and dry the collected sewage floating sludge again, and the sewage therein flows back to the Fenton tank for subsequent sewage purification, reducing waste.

[0021] According to some embodiments of the present invention, the sewage floating sludge recovery system further includes a tail water tank. The Fenton tank and the sludge-water separator are both connected to the tail water tank through pipelines, and the tail water tank is used for collecting the filtered sewage.

[0022] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0023] The following further describes the present invention in conjunction with the drawings and embodiments, where:

[0024] Figure 1 It is a side view of the floating sludge pusher 100 in the sewage floating sludge collection system according to the first aspect embodiment of the present invention;

[0025] Figure 2 It is a cross-sectional view of the sludge-water separator 200 in the sewage floating sludge collection system according to the first aspect embodiment of the present invention;

[0026] Figure 3 It is a connection schematic diagram of the sewage floating sludge recovery system according to the second aspect embodiment of the present invention.

[0027] Reference numerals: 100 - floating sludge pusher, 110 - power mechanism, 111 - pulley block, 112 - traction chain, 113 - motor, 114 - drive chain, 120 - scraper, 130 - support plate, 200 - sludge-water separator, 210 - extrusion chamber, 211 - water inlet pipe, 212 - slag discharge pipe, 213 - drain pipe, 220 - guide column, 221 - spiral blade, 300 - sludge collection tank. Detailed Embodiments

[0028] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc., which relate to the orientation description, is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0032] In the description of the present invention, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0033] The current treatment route for kitchen waste is: "regulation tank + two-phase centrifuge + microfilter + sedimentation tank + high-efficiency denitrification tank + denitrification tank (A) + nitrification tank (O) + ultrafiltration (UF) + sludge thickening tank + two-phase centrifuge / plate and frame filter press + Fenton tank + tail water tank". It is found in actual operation that when the Fenton tank performs mixing, static settling and precipitation, a large amount of floating sludge is likely to accumulate on the surface, which is likely to cause blockage of the overflow port. At the same time, it may lead to excessive suspended solids in the tail water and many problems such as non-compliance of the discharge index.

[0034] In response to this, the existing method for dealing with floating sludge is manual sludge dredging. There are no sunshade and rain shelter facilities at the sludge dredging operation site, and the working environment is harsh. When manually salvaging floating sludge, workers need to stand on top of the Fenton tank and open the manhole cover for dredging, which poses a risk of workers and tools falling into the Fenton tank. At the same time, the salvaged floating sludge needs to be manually bagged and incinerated, resulting in a large amount of labor.

[0035] In response to this, the present application proposes a sewage floating sludge collection and recovery system. This sewage floating sludge collection system uses a floating sludge pusher 100 to scrape the floating sludge on the surface of the sewage in the Fenton tank, and also uses a sludge water separator 200 to separate the sludge from the sewage near the liquid level, making the floating sludge be scraped more cleanly. This sewage floating sludge recovery system can further separate and dry the collected sewage floating sludge, and the sewage therein flows back to the Fenton tank for subsequent sewage purification, reducing waste.

[0036] Referring to Figure 1 and Figure 2 , the sewage floating sludge collection system in the first aspect embodiment of the present application includes a floating sludge pusher 100, a sludge water separator 200, and a sludge collection tank 300. Among them, the floating sludge pusher 100 is used to push the floating sludge on the sewage liquid surface and physically push the floating sludge into the sludge collection tank 300. The sludge water separator 200 is used to suck the sewage near the liquid level and separate the sludge suspended therein, collecting the floating sludge more thoroughly. The sludge collection tank 300 is used to collect the sludge discharged from the floating sludge pusher 100 and the sludge water separator 200 and discharge it to the subsequent sludge recovery system.

[0037] Specifically, the floating sludge pusher 100 includes a power mechanism 110 and a scraper 120. The power mechanism 110 drives the scraper 120 to move on the sewage liquid surface, so that the scraper 120 can push the floating sludge on the sewage liquid surface in the Fenton tank. For the specific structure of the power mechanism 110, an electric slide rail can be used to drive the scraper 120 to move horizontally, or a motor can be used to drive a rope to pull the floating scraper 120 to move on the liquid surface, and the floating sludge is scraped during the movement of the scraper 120.

[0038] In some embodiments, referring to Figure 1 , the power mechanism 110 includes a pulley block 111 and a traction chain 112. The pulley block 111 includes a plurality of fixed pulleys, and the traction chain 112 is wound around each pulley in the pulley block 111 to form a chain drive. The number of scrapers 120 is multiple and they are equidistantly installed on the traction chain 112. When installing this floating sludge pusher 100 to the Fenton tank, the pulley block 111 and the traction chain 112 are erected above the Fenton tank, and the lower part of the traction chain 112 is close to the liquid level. When the pulley starts to rotate, the traction chain 112 moves, thereby driving the scraper 120 to move and pushing the floating sludge to the sludge collection tank located on one side of the Fenton tank.

[0039] Furthermore, the power mechanism 110 further includes a motor 113 and a transmission chain 114. The transmission chain 114 is wound around the output shaft of the motor 113 and one of the pulleys in the pulley set 111, and the motor 113 drives the pulley in the pulley set to rotate through the transmission chain 114. By setting the transmission chain 114 to transmit power, the transmission ratio of the motor 113 can be changed, thereby reducing the burden on the motor 113.

[0040] Furthermore, the floating sludge pusher 100 further includes a support plate 130, and the support plate 130 is used to support the traction chain 112 to reduce the amplitude of its hanging due to gravity. Both ends of the support plate 130 are provided with bent surfaces to guide the traction chain 112 to slide over the upper surface of the support plate 130.

[0041] In some other embodiments, the power mechanism 110 includes a pulley set 111 and a traction belt. The traction belt is wound around each pulley in the pulley set 111 to form a belt drive, and a plurality of scrapers 120 are equidistantly installed on the traction belt. When the floating sludge pusher 100 is installed in the Fenton tank, the pulley set 111 and the traction belt are erected above the Fenton tank, and the lower part of the traction belt is close to the liquid level. When the pulley starts to rotate, the traction belt moves, thereby driving the scraper 120 to move and pushing the floating sludge to the sludge collection tank located on one side of the Fenton tank.

[0042] Furthermore, the power mechanism 110 further includes a motor 113 and a transmission belt. The transmission belt is wound around the output shaft of the motor 113 and one of the pulleys in the pulley set 111, and the motor 113 drives the pulley in the pulley set to rotate through the transmission belt. By setting the transmission belt to transmit power, the transmission ratio of the motor 113 can be changed, thereby reducing the burden on the motor 113.

[0043] Furthermore, the floating sludge pusher 100 further includes a support plate 130, and the support plate 130 is used to support the traction belt to reduce the amplitude of its hanging due to gravity. Both ends of the support plate 130 are provided with bent surfaces to guide the traction belt to slide over the upper surface of the support plate 130.

[0044] Refer to Figure 2, the sludge-water separator 200 includes an extrusion chamber 210 and a diversion column 220 rotatably disposed in the extrusion chamber 210. A water inlet pipe 211 connected to the Fenton tank is provided at the first end of the extrusion chamber 210, and a slag discharge pipe 212 is provided at the second end of the extrusion chamber 210. A spiral blade 221 is provided on the side surface of the diversion column 220. The outer diameter of the diversion column 220 gradually increases from the small-diameter end to the large-diameter end of the diversion column 220. The small-diameter end of the diversion column 220 is close to the first end of the extrusion chamber 210, and the large-diameter end of the diversion column 220 is close to the second end of the extrusion chamber 210. When the mixture of sewage and sludge flows in from the water inlet pipe 211, the sludge-water separator 200 is started and the diversion column 220 is rotated. The mixture is driven by the spiral blade 221 and moves towards the second end of the extrusion chamber 210. At the same time, due to the gradually increasing outer diameter of the diversion column 220, the mixture is extruded to squeeze out the water. The sludge discharged after the water is discharged finally discharges from the slag discharge pipe 212, completing the separation of sewage and sludge.

[0045] Further, a drain pipe 213 is provided at the bottom of the extrusion chamber 210, and a filter screen is provided between the drain pipe 213 and the extrusion chamber 210. When the mixture in the extrusion chamber 210 is extruded, the sludge cannot pass through the filter screen, and the sewage can pass through the filter screen, so that the liquid water extruded and discharged in the extrusion chamber 210 discharges from the drain pipe 213.

[0046] The sludge collection tank 300 is installed on the top of the Fenton tank and receives the floating sludge pushed by the floating sludge pusher 100. The slag discharge pipe 212 of the sludge-water separator 200 is connected to the sludge collection tank 300, which serves to collect the sludge.

[0047] Referring to Figure 3 , a sewage floating sludge recovery system in the second aspect embodiment of the present application includes the above-mentioned sewage floating sludge collection system, as well as a sludge thickening tank and a sludge separation system. The sludge collection tank 300 is connected to the sludge thickening tank and conveys the sludge to it. The sludge thickening tank is connected to the sludge separation system to further dry the sludge. The sludge separation system is provided with a water pipe for collecting water and is connected to the Fenton tank. The dried sludge enters the subsequent incineration process. For the specific equipment in the sludge separation system, it includes a two-phase centrifuge and a plate and frame filter press, which are used to completely separate sewage and sludge. The two-phase centrifuge and the plate and frame filter press are both prior arts, and their specific structures and working principles will not be elaborated here.

[0048] Further, the sewage floating sludge recovery system further includes a tail water tank. The Fenton tank and the sludge-water separator 200 are both connected to the tail water tank through pipelines. The tail water tank is used to collect the filtered sewage and discharge it after passing the detection.

[0049] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the relevant art. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other without conflict.

Claims

1. A sewage floating sludge collection system, characterized in that Comprising: A floating sludge pusher, which includes a power mechanism and a scraper. The power mechanism drives the scraper to move on the sewage liquid surface, and the scraper can push the floating sludge on the sewage liquid surface in the Fenton tank; A sludge-water separator, which includes an extrusion chamber and a guide column rotatably arranged in the extrusion chamber. A water inlet pipe communicating with the Fenton tank is arranged at the first end of the extrusion chamber, and a slag discharge pipe is arranged at the second end of the extrusion chamber; a spiral blade is arranged on the side surface of the guide column, the outer diameter of the guide column gradually increases from the small-diameter end to the large-diameter end of the guide column, the small-diameter end of the guide column is close to the first end of the extrusion chamber, and the large-diameter end of the guide column is close to the second end of the extrusion chamber; A sludge collection tank, which is installed on the top of the Fenton tank and receives the floating sludge pushed by the floating sludge pusher, and the slag discharge pipe of the sludge-water separator is connected to the sludge collection tank.

2. The sewage floating sludge collection system according to claim 1, wherein: The power mechanism includes a pulley group and a traction chain. The traction chain is wound around each pulley in the pulley group to form a chain drive. There are multiple scrapers and they are equidistantly installed on the traction chain.

3. The sewage floating sludge collection system according to claim 2, wherein: The power mechanism further includes a motor and a transmission chain. The transmission chain is wound around the output shaft of the motor and one of the pulleys in the pulley group, and the motor drives the pulley in the pulley group to rotate through the transmission chain.

4. The sewage floating sludge collection system according to claim 2, characterized in that: The floating sludge pusher further includes a support plate, and the support plate is used to support the traction chain.

5. The sewage floating sludge collection system according to claim 1, wherein: The power mechanism includes a pulley group and a traction belt. The traction belt is wound around each pulley in the pulley group to form a belt drive. There are multiple scrapers and they are equidistantly installed on the traction belt.

6. The sewage floating sludge collection system according to claim 5, wherein: The power mechanism further includes a motor and a transmission belt. The transmission belt is wound around the output shaft of the motor and one of the pulleys in the pulley group, and the motor drives the pulley in the pulley group to rotate through the transmission belt.

7. The sewage floating sludge collection system according to claim 5, wherein: The floating sludge pusher further includes a support plate, and the support plate is used to support the traction belt.

8. The sewage floating sludge collection system according to claim 1, characterized in that: A drain pipe is arranged at the bottom of the extrusion chamber, and a filter screen is arranged between the drain pipe and the extrusion chamber. The liquid water squeezed out in the extrusion chamber is discharged from the drain pipe.

9. A sewage floating sludge recovery system, characterized in that, Comprising the sewage floating sludge collection system according to any one of claims 1 to 8, as well as a sludge thickening tank and a sludge separation system. The sludge collection tank is connected to the sludge thickening tank and conveys sludge to it. The sludge thickening tank is connected to the sludge separation system to further dry the sludge. The sludge separation system is provided with a water pipe for collecting water and is connected to the Fenton tank.

10. The sewage floating sludge recovery system according to claim 9, characterized in that: The sewage floating sludge recovery system further includes a tail water tank. The Fenton tank and the sludge-water separator are both connected to the tail water tank through pipelines, and the tail water tank is used to collect the filtered sewage.

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