An integrated device for solid-liquid and oil-water separation of kitchen waste

Abstract

The present invention provides an integrated device for solid-liquid and oil-water separation of kitchen waste, belonging to the technical field of kitchen waste treatment. The device includes a pretreatment filter screen, a solid-liquid separation filling area, a solid-liquid separation oil filtering area, a solid-liquid separation cleaning area, an oil pump, a shallow pond separation area, a bubble oil removal area, an oil tank and a water tank. The pretreatment filter screen is arranged at the front end of the device, and the solid-liquid separation filling area is arranged behind it. The solid-liquid separation oil filtering area and the solid-liquid separation cleaning area are sequentially arranged behind the solid-liquid separation filling area. The solid-liquid separation oil filtering area is connected to the shallow pond separation area through an oil pump. The bubble oil removal area is arranged behind the shallow pond separation area, and the oil tank and the water tank are connected behind the bubble oil removal area. The device separates and processes the solid-liquid mixture by using the three-way rotation centrifugal method at the source of kitchen waste, and performs multi-stage separation treatment on the oil-water mixture by applying the shallow pond theory, realizing the recycling of kitchen waste and avoiding environmental pollution caused by oil-water leakage during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen waste treatment, and particularly to an integrated device for solid-liquid and oil-water separation of kitchen waste. Background Art

[0002] With the rapid development of the Chinese economy, the Chinese catering industry has also witnessed unprecedented growth, accompanied by a large amount of residual kitchen waste. Statistical data shows that the annual generation of kitchen waste in Chinese cities is not less than 60 million tons. This not only causes a large amount of waste but also pollutes the environment. Kitchen waste mainly includes solid residues such as meat bones, residual rice and flour foods, plastic lunch boxes, etc., as well as a mixture of oil and water with a content of 70% to 90%. The traditional treatment methods for kitchen waste mainly include directly using it as animal feed, landfilling, incineration, etc. Kitchen waste contains various germs. If used as animal feed without treatment, it will pose a hazard to human health through the accumulation of toxins and harmful substances in livestock and poultry bodies. The content of leftover soup and swill in kitchen waste is very high, and it is easy to leak during transportation, affecting the urban environment. Direct landfill treatment or incineration treatment will cause serious pollution of groundwater and air. On this basis, the present invention contemplates an energy-saving and efficient treatment method, and installs a device for treating kitchen waste in restaurants to achieve the separation of solid residues and oil-water mixtures, as well as the separation of oil and water. This can not only make full use of resources but also avoid pollution caused by oil-water leakage during transportation. The separated solid residues can be processed into high-quality feed, which is rich in protein content; the separated oil can be used for the preparation of biodiesel. It can be seen that correctly and efficiently treating kitchen waste can not only improve the resource utilization rate but also reduce environmental pollution. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an integrated device for solid-liquid and oil-water separation of kitchen waste, which is used to separate solid waste, waste oil, and waste water in kitchen waste and achieve the separation of the three in the device.

[0004] The device includes a pretreatment filter screen, a solid-liquid separation filling area, a solid-liquid separation oil filtering area, a solid-liquid separation cleaning area, an oil pump, a shallow pool separation area, a bubble oil removal area, an oil tank, and a water tank. The pretreatment filter screen is arranged at the front end of the device. The solid-liquid separation filling area is arranged behind the pretreatment filter screen. The solid-liquid separation oil filtering area and the solid-liquid separation cleaning area are successively arranged behind the solid-liquid separation filling area. The solid-liquid separation oil filtering area is connected to the shallow pool separation area through an oil pump. The bubble oil removal area is arranged behind the shallow pool separation area. The oil tank and the water tank are connected behind the bubble oil removal area.

[0005] Among them, there are 3 separation barrels in the solid-liquid separation filling area. Kitchen waste is loaded into the separation barrels in the solid-liquid separation filling area, and the separation barrels are installed on the base.

[0006] The base of the separation barrel can rotate. At the same time, three separation barrels are respectively located in the solid-liquid separation filling area, the solid-liquid separation oil filtering area, and the solid-liquid separation cleaning area.

[0007] The waste oil separated and collected in the oil tank, and the waste water separated and collected in the water tank.

[0008] This device uses the centrifugal principle for solid-liquid separation, and realizes the separation of solid residues and waste oil and waste liquid through the high-speed rotation of the cylindrical barrel in the centrifugal area.

[0009] The shallow pond separation area uses three-level shallow ponds for oil-water separation. The shallow ponds use corrugated plates attached with paraffin. The distance between the corrugated plates is 27 - 33 mm, and the inclination angle of the corrugated plates is 55° - 65°.

[0010] The beneficial effects of the above technical solutions of the present invention are as follows:

[0011] In the above solution, a pretreatment filter screen is used for preliminary separation, which speeds up the subsequent separation speed and reduces the total separation time. The centrifugal separation technology is used for solid-liquid separation, which improves the solid-liquid separation efficiency. The design of three separation barrels is adopted, and the three separation barrels work in the filling area, the oil filtering area, and the cleaning area respectively, which improves the work efficiency. The shallow pond is used to separate waste oil and waste water, and the separation efficiency is high. Description of the Drawings

[0012] Figure 1 It is the working flow chart of the integrated device for solid-liquid and oil-water separation of kitchen waste of the present invention;

[0013] Figure 2 It is the schematic diagram of the filling and solid-liquid separation part of the integrated device for solid-liquid and oil-water separation of kitchen waste of the present invention;

[0014] Figure 3 It is the schematic diagram of the oil-water separation part of the integrated device for solid-liquid and oil-water separation of kitchen waste of the present invention. Detailed Embodiments

[0015] To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the drawings and specific embodiments.

[0016] The present invention provides an integrated device for solid-liquid and oil-water separation of kitchen waste.

[0017] The device includes a pretreatment filter screen, a solid-liquid separation filling area, a solid-liquid separation oil filtering area, a solid-liquid separation cleaning area, an oil pump, a shallow pond separation area, a bubble oil removal area, an oil tank and a water tank. The pretreatment filter screen is arranged at the front end of the device. The solid-liquid separation filling area is arranged behind the pretreatment filter screen. The solid-liquid separation oil filtering area and the solid-liquid separation cleaning area are successively arranged behind the solid-liquid separation filling area. The solid-liquid separation oil filtering area is connected to the shallow pond separation area through an oil pump. The bubble oil removal area is arranged behind the shallow pond separation area. The oil tank and the water tank are connected behind the bubble oil removal area.

[0018] Among them, the pretreatment filter screen mainly conducts preliminary solid-liquid separation, and can quickly separate large solid wastes from waste oil and waste water.

[0019] Such as Figure 2 shown, the solid-liquid separation filling area is used to load kitchen waste into the separation barrels. There are 3 separation barrels in total in this device, and the 3 separation barrels are rotated and moved through the base.

[0020] Such as Figure 3 shown, the solid-liquid separation oil filtering area is a centrifugal separation device. After the kitchen waste in the separation barrel enters the centrifugal separation device, the solid and waste oil and waste water are separated through the centrifugal separation system.

[0021] The solid-liquid separation cleaning area mainly conducts the cleaning work of the separation barrels leaving the solid-liquid separation oil filtering area.

[0022] The oil pump provides power for the transportation of separating waste oil and waste water from the solid-liquid separation oil filtering area.

[0023] The shallow pond separation area and the bubble oil removal area adopt the shallow pond principle to separate waste oil and waste water.

[0024] The oil tank and the water tank respectively store the separated waste oil and waste water.

[0025] The working process of the device is as Figure 1 shown. First, the kitchen waste is preliminarily separated through the pretreatment filter screen, and then enters the solid-liquid separation filling area. There are 3 separation barrels in the solid-liquid separation filling area. The kitchen waste is loaded into the separation barrels in the solid-liquid separation filling area. When one separation barrel is filled with a predetermined amount of kitchen waste, its base rotates, and this separation barrel enters the solid-liquid separation oil filtering area for solid-liquid centrifugal separation. After the solid-liquid separation, the solid is discharged, and the oil-liquid mixture enters the subsequent treatment process. This separation barrel enters the solid-liquid separation cleaning area for cleaning. At the same time, the 3 separation barrels are respectively located in the filling area, the oil filtering area and the cleaning area, and the 3 separation barrels are moved through the base rotation device. The oil-liquid mixture separated from the solid-liquid separation area is separated into waste oil and waste water in the shallow pond separation area and the bubble oil removal area. The separated waste oil enters the oil tank, and the separated waste water enters the water tank.

[0026] The solid-liquid separation efficiency that the device can achieve is more than 98%, and the oil-water separation efficiency is more than 71%.

[0027] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An integrated device for solid-liquid and oil-water separation of kitchen waste, characterized in that: it includes a pretreatment filter screen, a solid-liquid separation filling area, a solid-liquid separation oil filtering area, a solid-liquid separation cleaning area, an oil pump, a shallow pond separation area, a bubble oil removal area, an oil tank and a water tank. The pretreatment filter screen is arranged at the front end of the device. The solid-liquid separation filling area is arranged behind the pretreatment filter screen. The solid-liquid separation oil filtering area and the solid-liquid separation cleaning area are sequentially arranged behind the solid-liquid separation filling area. The solid-liquid separation oil filtering area is connected to the shallow pond separation area through an oil pump. The bubble oil removal area is arranged behind the shallow pond separation area. The oil tank and the water tank are connected behind the bubble oil removal area; There are 3 separation barrels in the solid-liquid separation filling area. Kitchen waste is loaded into the separation barrels in the solid-liquid separation filling area, and the separation barrels are installed on the base; The base of the separation barrel can rotate. At the same time, the 3 separation barrels are respectively located in the solid-liquid separation filling area, the solid-liquid separation oil filtering area and the solid-liquid separation cleaning area.

2. The integrated device for solid-liquid and oil-water separation of kitchen waste according to claim 1, characterized in that: the waste oil separated is collected in the oil tank, and the waste water separated is collected in the water tank.

3. The integrated device for solid-liquid and oil-water separation of kitchen waste according to claim 1, characterized in that: the device uses the centrifugal principle for solid-liquid separation.

4. The integrated device for solid-liquid and oil-water separation of kitchen waste according to claim 1, characterized in that: the shallow pond separation area uses a three-stage shallow pond for oil-water separation. The shallow pond uses corrugated plates attached with paraffin. The distance between the corrugated plates is 27 - 33 mm, and the inclination angle of the corrugated plates is 55° - 65°.

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