Sewage treatment system for catering industry

Abstract

The utility model provides a catering industry sewage treatment system which comprises a residue filtering device which comprises a lifting pump, a water passing groove and a residue basket. An outlet and an inlet of the lifting pump are connected with pipelines, and the lifting pump is used for pumping sewage in the catering industry to a high position; the water passing groove is obliquely arranged, and the end, located at the high position, of the water passing groove is connected into a pipeline outlet of the lifting pump. The residue basket comprises a bottom plate, a filter plate and two side plates, the bottom plate is laid at the bottom of the water flowing groove, the filter plate is fixedly connected to the edge of the bottom plate, the included angle between the filter plate and the bottom plate faces the water coming direction of the water flowing groove, the side plates are fixedly connected between the bottom plate and the filter plate, and the side plates are fixedly connected between the bottom plate and the filter plate. The two side plates are located on the two sides of the bottom plate respectively, the multiple residue baskets are arranged at intervals, and the filtering particle sizes of the filter plates of the multiple residue baskets are sequentially decreased in the water flow direction. The food residue filtering device can be used for filtering food residues in large-capacity and large-flow sewage, and the probability of blockage is reduced as much as possible.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, specifically a wastewater treatment system for the catering industry. Background Technology

[0002] Wastewater from the catering industry generally requires treatment of two types of pollutants. The first is oil in the water, which is primarily separated using an oil-water separator. The structure and operation of oil-water separators are existing, mature technologies; their structure or improved versions are also disclosed in numerous patent documents, such as CN2608093Y, CN206970336U, and CN108793474A. The second is solids in the water, mainly food residue, which is typically filtered by installing a filter screen or filter basket at the upstream end of the wastewater collection process. When dealing with large volumes or high flows of catering industry wastewater, individual filter screens or filter baskets are easily clogged, affecting subsequent purification. Utility Model Content

[0003] The main objective of this application is to provide a wastewater treatment system for the catering industry, primarily used for filtering food residue from large-volume, high-flow-rate wastewater. To this end, this application adopts the following technical solution:

[0004] A wastewater treatment system for the catering industry includes a residue filtration device, comprising a lift pump, a water trough, and residue baskets. The lift pump has pipes connecting its inlet and outlet for pumping the wastewater to a higher location. The water trough is inclined, with its higher end connected to the outlet of the lift pump. Each residue basket includes a base plate, a filter plate, and two side plates. The base plate is laid on the bottom of the water trough. The filter plate is fixedly connected to the edge of the base plate, with the included angle between them facing the direction of the incoming water from the water trough. The side plates are fixedly connected between the base plate and the filter plate, with the two side plates located on opposite sides of the base plate. Several residue baskets are spaced apart, and the filter particle size of the filter plates in the several residue baskets decreases sequentially along the water flow direction.

[0005] In at least one embodiment, the wastewater treatment system for the catering industry further includes an oil-water separator, the inlet of which is located at the outlet end of the water trough. Optionally, the oil-water separator includes a buffer tank, a separation tank, and an oil storage tank; the upper front surface of the buffer tank is provided with a water inlet, which is located at the outlet end of the water trough; the front end of the separation tank and the rear end of the buffer tank are connected by a water inlet pipe; the separation tank is provided with a partition, an oil outlet pipe, and a water outlet pipe; the partition is fixedly connected between two side walls at the bottom of the separation tank, and its lower edge leaves a gap with the bottom surface of the separation tank; one end of the oil outlet pipe is located between the upper part of the partition and the inner wall of the front end of the separation tank, and the other end extends through to the outside of the separation tank and connects to the oil storage tank; the water outlet pipe is a right-angle bend, one end of which is located between the upper part of the partition and the inner wall of the rear end of the separation tank, and the other end extends through to the outside of the rear end of the separation tank.

[0006] The wastewater treatment system for the catering industry provided in this application can achieve at least the following beneficial effects:

[0007] This application pumps wastewater from the catering industry to a high place and then sets up multiple residue baskets along the wastewater flow path. The filter plates of the residue baskets are of different specifications, and the filter particle size decreases sequentially along the water flow direction. This allows for the first filtration of large-volume food residues and the subsequent filtration of tiny residues. The reasonable structural layout greatly avoids the disadvantage of using a single filter screen being easily clogged, making it suitable for treating large-capacity and high-flow-rate wastewater. Attached Figure Description

[0008] One or more embodiments of this application will now be described by way of example only with reference to the accompanying drawings, in which:

[0009] Figure 1 This is a perspective view of a wastewater treatment system for the catering industry, as shown in an embodiment of this application.

[0010] Figure 2 for Figure 1 A schematic diagram of the structure of the residue basket in the embodiment;

[0011] Figure 3 for Figure 1 A partial cross-sectional view of the water channel in the embodiment;

[0012] Figure 4 This is a perspective view of the oil-water separator according to an embodiment of this application;

[0013] Figure 5 for Figure 4 Top sectional view of an oil-water separator;

[0014] Figure 6 for Figure 4 Longitudinal sectional view of the separation tank of the oil-water separator.

[0015] The following numbers are labeled in the diagram: 100, Residue filtration device; 110, Lifting pump; 120, Water channel; 121, Groove; 122, Slot; 130, Residue basket; 131, Base plate; 132, Filter plate; 133, Side plate; 134, Locking block; 135, Lifting rod; 200, Oil-water separator; 210, Buffer tank; 220, Separation tank; 230, Oil storage tank; 211, Water inlet; 221, Baffle plate; 222, Oil outlet pipe; 223, Water outlet pipe; 224, Oil inlet; 225, Water inlet pipe. Detailed Implementation

[0016] The present application will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0017] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0018] like Figures 1-3 As shown, the wastewater treatment system for the catering industry in this embodiment includes a residue filtration device 100, which includes a lift pump 110, a water trough 120, and a residue basket 130. The outlet and inlet of the lift pump 110 are connected to pipes for pumping catering wastewater to a higher position. The water trough 120 is inclined, and its end at the higher position is connected to the pipe outlet of the lift pump 110. The residue basket 130 includes a base plate 131, a filter plate 132, and two side plates 133. The base plate 131 is laid on the bottom of the water trough 120. The filter plate 132 is fixedly connected to the edge of the base plate 131, and the included angle between the two faces the direction of the incoming water from the water trough 120. The side plates 133 are fixedly connected between the base plate 131 and the filter plate 132, and the two side plates 133 are respectively located on both sides of the base plate 131. There are several residue baskets 130 arranged at intervals, and the filter particle size of the filter plate 132 of the several residue baskets 130 decreases sequentially along the direction of water flow. Filter plate 132 can be a mesh filter or filter plate, or it can be made of a mesh screen or a filter plate. Figure 1 and Figure 3 The shape of the grille.

[0019] The bottom of the water trough 120 has several grooves 121, and the base plate 131 is laid in the grooves 121, with the top surface of the base plate 131 flush with the top of the grooves 121. This serves two purposes: first, it ensures that the top surface of the base plate 131 of the waste basket 130 is flat with the bottom of the water trough 120, reducing obstruction to the flow of sewage; second, it restricts the movement of the base plate 131, making the entire waste basket 130 securely installed.

[0020] The filter plate 132 has locking blocks 134 on both sides, and the side wall of the water channel 120 has a slot 122 for locking the locking blocks 134. The top of the slot 122 penetrates the upper edge of the inner wall of the water channel 120. In use, the locking blocks 134 of the residue basket 130 slide downward along the slot 122 and can be locked in the slot 122. When it is necessary to replace the residue basket 130 or empty the residue in the residue basket 130, the residue basket 130 is slid upward and removed.

[0021] To facilitate the loading and unloading of the residue basket, a lifting rod 135 is fixedly connected between the two side panels 133.

[0022] The wastewater treatment system for the catering industry may also include an oil-water separator 200, the inlet of which is located at the outlet end of the drainage trough 120. See details. Figures 4-6 This application also provides a specific embodiment of an oil-water separator, namely, the oil-water separator 200 includes a buffer tank 210, a separation tank 220, and an oil storage tank 230; the front end face of the buffer tank 210 is provided with a water inlet 211, which is located at the water outlet end of the water channel 120; the front end of the separation tank 220 and the rear end of the buffer tank 210 are connected by a water inlet pipe 225, and the separation tank 220 is provided with a baffle 221, an oil outlet pipe 222, and a water outlet pipe 223; the baffle... 221 is fixedly connected between the two side walls at the bottom of the separator 220, and its lower edge leaves a gap with the bottom surface of the separator 220; one end of the oil outlet pipe 222 is located between the upper part of the partition 221 and the inner wall of the front end of the separator 220, and the other end extends through to the outside of the separator 220 and connects to the oil storage tank 230; the water outlet pipe 223 is a right-angle bend, one end of which is located between the upper part of the partition 221 and the inner wall of the rear end of the separator 220, and the other end extends through to the outside of the rear end of the separator 220. Several oil inlets 224 are opened on the upper half of the end of the oil outlet pipe 222 located inside the separator 220.

[0023] Due to the arrangement of the baffle 221 and the difference in height between the oil outlet pipe 222, the water outlet pipe 223, and the water inlet pipe 225, the flowing sewage can be blocked and settled, which is beneficial for oil-water separation. The separated oil is collected in the oil storage tank 230, and the separated water is discharged through the water outlet pipe 223.

[0024] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this application should be within the protection scope of this application.

Claims

1. A food service wastewater treatment system, characterized by: The application relates to a residue filtering device (100) which comprises a lifting pump (110), a water channel (120) and a residue basket (130); the outlet and inlet of the lifting pump (110) are connected with pipes for pumping the sewage in restaurants to a high position; the water channel (120) is arranged in an inclined mode, and the end at the high position is connected with the pipe outlet of the lifting pump (110); the residue basket (130) comprises a bottom plate (131), a filter plate (132) and two side plates (133); the bottom plate (131) is laid on the bottom of the water channel (120); the filter plate (132) is fixedly connected with the edge of the bottom plate (131) and the included angle between the two plates faces the water inflow direction of the water channel (120); the side plates (133) are fixedly connected between the bottom plate (131) and the filter plate (132), and the two side plates (133) are respectively arranged on the two sides of the bottom plate (131); the residue baskets (130) are arranged in a spaced mode, and the filtering granularity of the filter plates (132) of the residue baskets (130) gradually decreases along the water flow direction.

2. The food service wastewater treatment system of claim 1, wherein: The bottom of the water channel (120) is provided with a plurality of grooves (121), the bottom plate (131) is matched and laid on the grooves (121), and the top surface of the bottom plate (131) is flush with the top end of the grooves (121).

3. The food service wastewater treatment system of claim 1, wherein: The two sides of the filter plate (132) are provided with clamping blocks (134), the side wall of the water channel (120) is provided with clamping grooves (122) for clamping the clamping blocks (134), and the top end of the clamping grooves (122) penetrates the inner wall of the water channel (120) upward.

4. The food service wastewater treatment system of claim 1, wherein: The two side plates (133) are fixedly connected with a lifting rod (135).

5. The food service wastewater treatment system of claim 1, wherein: The application further comprises an oil-water separator (200) which is arranged at the outlet end of the water channel (120).

6. A catering wastewater treatment system according to claim 5, characterised in that: The oil-water separator (200) comprises a buffer tank (210), a separation tank (220) and an oil storage tank (230); the front end upper portion of the buffer tank (210) is provided with a water inlet (211) which is arranged at the water outlet end of the water channel (120); the front end of the separation tank (220) and the rear end of the buffer tank (210) are connected through a water inlet pipe (225), the separation tank (220) is provided with a partition plate (221), an oil outlet pipe (222) and a water outlet pipe (223); the partition plate (221) is fixedly connected between the two side walls of the lower portion of the separation tank (220), and the lower edge of the partition plate (221) is spaced from the bottom surface of the separation tank (220); one end of the oil outlet pipe (222) is located between the upper portion of the partition plate (221) and the front end inner wall of the separation tank (220), and the other end penetrates to the outside of the separation tank (220) and is connected with the oil storage tank (230); the water outlet pipe (223) is a right-angle elbow pipe, one end of the water outlet pipe (223) is located between the upper portion of the partition plate (221) and the rear end inner wall of the separation tank (220), and the other end penetrates to the outside of the rear end of the separation tank (220).

7. A catering wastewater treatment system according to claim 6, characterised in that: The end of the oil outlet pipe (222) in the separation tank (220) is provided with several oil inlets (224) in the upper half of the pipe wall.

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