Three-phase centrifugal liquid resource system and three-phase centrifugal liquid resource method

Abstract

The application provides a three-phase centrifugal liquid resource system and a three-phase centrifugal liquid resource method, wherein the three-phase centrifugal liquid resource system comprises: a three-phase centrifugal liquid device, which is used for outputting three-phase centrifugal liquid; a ceramic membrane pool, which is connected with the three-phase centrifugal liquid container and is used for filtering insoluble solids in the three-phase centrifugal liquid and reducing total nitrogen of the three-phase centrifugal liquid to form a crude quality carbon source; and an MVR device, which is used for forming a refined carbon source by steam mechanical recompression of the crude quality carbon source. Through the above technical scheme, after the three-phase centrifugal liquid is treated by the three-phase centrifugal liquid resource system, most of the insoluble solids in the three-phase centrifugal liquid can be filtered out, the crude quality carbon source (ceramic membrane system water production) and the refined carbon source (MVR system water production) are produced, the three-phase centrifugal liquid resource system is suitable for a sewage denitrification process additional carbon source, and the utilization rate of the three-phase centrifugal liquid resource is improved.

Description

Technical Field

[0001] This invention relates to the technical field of three-phase centrifugal liquid resource recovery methods, and more specifically, to a three-phase centrifugal liquid resource recovery system and a three-phase centrifugal liquid resource recovery method. Background Technology

[0002] With the increasing stringency of wastewater treatment plant discharge standards in my country, the problem of excessive total nitrogen (TNO) has received growing attention. Currently, most wastewater treatment plants employ biological denitrification processes, where denitrification requires organic matter (carbon source) as an electron donor. However, due to the influence of biological treatment processes, most wastewater treatment plants experience carbon-to-nitrogen ratio imbalances or insufficient biodegradability during the denitrification stage. Therefore, it is necessary to supplement the carbon source during denitrification, i.e., to add organic matter. The most widely used carbon sources include methanol, acetic acid, glucose, and ethanol, which have good denitrification effects but are expensive, resulting in high carbon source costs for wastewater treatment plants and significantly increasing wastewater treatment costs. Given the huge demand for external carbon sources, finding a more efficient, stable, and cost-effective carbon source can effectively reduce the operating costs of wastewater treatment plants and lower wastewater treatment costs.

[0003] On the other hand, food waste has a high organic content and is generated in large quantities, making it prone to decay and environmental pollution, while also possessing strong potential for resource utilization. Taking Shenzhen as an example, the daily amount of food waste generated is enormous, accounting for more than 20% of the city's total domestic waste. Food waste includes restaurant waste and kitchen waste; restaurant waste refers to food scraps or waste generated during cooking, mainly consisting of a solid-liquid mixture. Kitchen waste refers to leftover food and byproducts from food processing, and its composition and properties vary depending on the region, residents' dietary habits, and the season.

[0004] Currently, after sorting out impurities, food waste is crushed into a slurry and then subjected to three-phase separation. The separated oil is recycled. The separated liquid phase is a three-phase centrifugal liquid, which has high total nitrogen and COD (Chemical Oxygen Demand). Therefore, reducing the total nitrogen in the three-phase centrifugal liquid and increasing the carbon source yield are urgent problems to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a three-phase centrifugal liquid resource recovery system and a three-phase centrifugal liquid resource recovery method to solve the technical problems in the prior art of how to reduce the total nitrogen of three-phase centrifugal liquid and increase the carbon source yield.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] Firstly, a three-phase centrifugal liquid resource recovery system is provided, comprising:

[0008] Three-phase centrifugal liquid device, the three-phase centrifugal liquid device being used to output three-phase centrifugal liquid;

[0009] A ceramic membrane tank is connected to the three-phase centrifuge container. The ceramic membrane tank is used to filter insoluble solids in the three-phase centrifuge and reduce the total nitrogen in the three-phase centrifuge to form a crude carbon source.

[0010] The MVR device recompresses the crude carbon source using steam machinery to form a refined carbon source.

[0011] By adopting the above technical solution, after the three-phase centrifugal liquid is treated by the three-phase centrifugal liquid resource recovery system, most of the insoluble solids can be filtered out, and crude carbon source (permeable water of ceramic membrane system) and refined carbon source (permeable water of MVR system) can be produced. It is suitable for adding carbon source in wastewater denitrification process and improves the utilization rate of three-phase centrifugal liquid resource recovery.

[0012] In one embodiment, the three-phase centrifugal liquid device includes a three-phase centrifugal mechanism and a solid phase material outlet, an oil phase material outlet, and a liquid phase material outlet disposed on the three-phase centrifugal mechanism. The three-phase centrifugal mechanism is used to separate kitchen waste slurry into solid phase material, oil phase material, and liquid phase material. The solid phase material outlet is used to output the solid phase material, the oil phase material outlet is used to output the oil phase material, and the liquid phase material outlet is used to output the liquid phase material. The liquid phase material is the three-phase centrifugal liquid, and the liquid phase material outlet is connected to the ceramic membrane tank.

[0013] By adopting the above technical solutions, the three-phase centrifugal liquid device has a high adaptability to kitchen waste slurry, can operate automatically, continuously, and for a long time, and has a large production capacity, compact structure, and small footprint.

[0014] In one embodiment, the three-phase centrifuge device includes a three-phase centrifuge storage container connected to the ceramic membrane tank.

[0015] By adopting the above technical solution, the temporary storage of three-phase centrifugal liquid before injection into the ceramic membrane tank is realized, and the timed and quantitative injection of three-phase centrifugal liquid into the ceramic membrane tank is achieved.

[0016] In one embodiment, the three-phase centrifugal liquid resource recovery system further includes an aeration device connected to the ceramic membrane tank, which is used to mix the three-phase centrifugal liquid in the ceramic membrane tank by air aeration.

[0017] By adopting the above technical solution, the aeration device can prevent sedimentation in the ceramic membrane tank, alleviate the pollution of the ceramic membrane, and improve the reaction efficiency of the three-phase centrifugal liquid.

[0018] In one embodiment, the three-phase centrifugal liquid resource recovery system further includes a clear water tank connected between the ceramic membrane tank and the MVR device, and the clear water tank is used to store the clear water produced by the ceramic membrane tank.

[0019] By adopting the above technical solution, it is possible to collect clean water after it has been filtered through a ceramic membrane, thereby improving the recycling rate of clean water.

[0020] In one embodiment, the three-phase centrifugal liquid resource recovery system further includes a water production device connected between the ceramic membrane tank and the clear water tank, the water production device being used to drive the clear water from the ceramic membrane tank to the clear water tank.

[0021] By adopting the above technical solution, the backwash water pump uses clean water from the clean water tank to backwash the ceramic membrane, remove blockages in the ceramic membrane pores, and maintain the working flux of the ceramic membrane.

[0022] In one embodiment, the three-phase centrifugal liquid resource recovery system further includes a backwash water device connected between the clear water tank and the ceramic membrane tank. The backwash water device is used to drive the clear water from the clear water tank to the ceramic membrane tank to rinse the ceramic membrane.

[0023] By adopting the above technical solution, the backwash water pump uses clean water from the clean water tank to backwash the ceramic membrane, remove blockages in the ceramic membrane pores, and maintain the working flux of the ceramic membrane.

[0024] In one embodiment, the three-phase centrifugal liquid resource recovery system further includes a sludge discharge device connected to the ceramic membrane tank and used to discharge insoluble solids from the ceramic membrane tank.

[0025] By adopting the above technical solution, the efficiency of insoluble solids discharge from the ceramic membrane tank has been improved.

[0026] In one embodiment, the ethanol concentration of the refined carbon source is higher than that of the crude carbon source.

[0027] By adopting the above technical solution, the three-phase centrifugal resource recovery system of this embodiment is suitable for adding carbon sources in wastewater denitrification processes, thereby improving the utilization rate of three-phase centrifugal liquid resources.

[0028] Secondly, a method for resource recovery of three-phase centrifugal liquid is provided, wherein the three-phase centrifugal liquid is treated with the three-phase centrifugal liquid resource recovery system as described above to obtain the crude carbon source and the refined carbon source.

[0029] By adopting the above technical solution, based on the advantages of the three-phase centrifugal liquid resource recovery system of the above embodiments, the three-phase centrifugal liquid resource recovery method of this embodiment can filter out most of the insoluble solids in the three-phase centrifugal liquid, produce crude carbon source (permeable water of ceramic membrane system) and refined carbon source (permeable water of MVR system), which is suitable for adding carbon source in wastewater denitrification process and improves the utilization rate of three-phase centrifugal liquid resource recovery. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the three-phase centrifugal liquid resource recovery system provided in an embodiment of the present invention.

[0032] The labels for the attached figures are as follows:

[0033] 100. Three-phase centrifugal liquid resource recovery system;

[0034] 1. Three-phase centrifugal liquid device; 2. Ceramic membrane tank; 3. MVR device; 4. Aeration device; 5. Clear water tank; 6. Product water device; 7. Backwash water device; 8. Sludge discharge device. Detailed Implementation

[0035] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments:

[0039] like Figure 1 As shown in the figure, an embodiment of the present invention provides a three-phase centrifugal liquid resource recovery system 100 for treating three-phase centrifugal liquid to produce crude carbon source (permeate water of ceramic membrane system) and refined carbon source (permeate water of MVR system); the three-phase centrifugal liquid resource recovery system 100 provided in this embodiment is suitable for adding carbon sources in wastewater denitrification processes; the following is a detailed description through specific embodiments:

[0040] The three-phase centrifugal liquid resource recovery system 100 of this embodiment includes: a three-phase centrifugal liquid device 1, a ceramic membrane tank 2, and an MVR device 3;

[0041] The three-phase centrifugal liquid device 1 is used to output three-phase centrifugal liquid. It can be understood that the three-phase centrifugal liquid device 1 can be used to decompose kitchen waste slurry into solid phase material, oil phase material and liquid phase material, wherein the liquid phase material is three-phase centrifugal liquid. The three-phase centrifugal liquid device 1 is used to inject the three-phase centrifugal liquid into the ceramic membrane tank 2, or the three-phase centrifugal liquid device 1 is used to store the three-phase centrifugal liquid and then inject the three-phase centrifugal liquid device 1 into the ceramic membrane tank 2 at an appropriate time.

[0042] Ceramic membrane tank 2 is connected to the three-phase centrifuge container. Ceramic membrane tank 2 is used to filter insoluble solids in the three-phase centrifuge and reduce the total nitrogen in the three-phase centrifuge to form a crude carbon source. Here, it can be understood that ceramic membrane tank 2 is equipped with a ceramic membrane with catalytic function. When water is added to ceramic membrane tank 2, the ceramic membrane is submerged in the water. The three-phase centrifuge undergoes hydrolysis, acidification, and denitrification reactions in ceramic membrane tank 2 to remove total nitrogen. The ceramic membrane has catalytic function, which can enhance the disinfection effect of the disinfectant and the oxidative decomposition effect on organic matter. Specifically, the carbon source concentration obtained by hydrolysis and acidification of the three-phase centrifuge in ceramic membrane tank 2 is much lower than the carbon source concentration produced by fermentation. Therefore, the three-phase centrifuge generates a crude carbon source (ceramic membrane system permeate) in ceramic membrane tank 2.

[0043] MVR unit 3 uses steam mechanical recompression to form a refined carbon source from a crude carbon source. Here, MVR stands for mechanical vapor recompression. MVR is an energy-saving technology that reuses the energy of the secondary steam it generates, thereby reducing the need for external energy. MVR evaporation treatment technology operates stably, has strong shock resistance, and can adapt to the needs of unstable three-phase centrifugal liquid water quality and large fluctuations in water volume. Specifically, MVR unit 3 heats the three-phase centrifugal liquid through boiling, and then distills out light components with high COD values, such as alcohols, as a carbon source for recovery; that is, MVR unit 3 produces a refined carbon source (MVR system permeate).

[0044] By adopting the above technical solution, after the three-phase centrifugal liquid is treated by the three-phase centrifugal liquid resource recovery system 100, most of the insoluble solids can be filtered out, producing crude carbon source (permeable water of ceramic membrane system) and refined carbon source (permeable water of MVR system). It is suitable for adding carbon source in wastewater denitrification process and improves the utilization rate of three-phase centrifugal liquid resource recovery.

[0045] In one embodiment, the three-phase centrifugal liquid device 1 includes a three-phase centrifugal mechanism and a solid phase material outlet, an oil phase material outlet, and a liquid phase material outlet disposed on the three-phase centrifugal mechanism. The three-phase centrifugal mechanism is used to separate kitchen waste slurry into solid phase material, oil phase material, and liquid phase material. The solid phase material outlet is used to output solid phase material, the oil phase material outlet is used to output oil phase material, and the liquid phase material outlet is used to output liquid phase material. The liquid phase material is a three-phase centrifugal liquid, and the liquid phase material outlet is connected to the ceramic membrane tank 2.

[0046] Here, it can be understood that the working principle of the three-phase centrifuge mechanism is to utilize the specific gravity difference between oil, water, and sludge, and to amplify this difference by several thousand times using a centrifugal force field. Under the action of centrifugal force, the solid phase material is sedimented, while the liquid and oil phase materials also separate into strata, thus achieving three-phase separation of oil, water, and sludge. Solid phase material outlets, oil phase material outlets, and liquid phase material outlets are set at different locations within the three-phase centrifuge mechanism to achieve the output of solid, oil, and liquid phase materials.

[0047] Specifically, the three-phase centrifugal liquid device 1 can be a three-phase horizontal screw centrifuge device.

[0048] By adopting the above technical solution, the three-phase centrifugal liquid device 1 has a high adaptability to kitchen waste slurry, can operate automatically, continuously and for a long time, and has a large production capacity, compact structure and small footprint.

[0049] In one embodiment, the three-phase centrifugal liquid device 1 includes a three-phase centrifugal liquid storage container, which is connected to a ceramic membrane tank 2.

[0050] Here, it can be understood that the three-phase centrifugal liquid device 1 is used to store the three-phase centrifugal liquid transmitted from other pipelines. That is, the three-phase centrifugal liquid device 1 serves as a container for temporarily storing the three-phase centrifugal liquid, which is then injected into the ceramic membrane tank 2 when appropriate.

[0051] By adopting the above technical solution, the temporary storage of three-phase centrifugal liquid before injection into ceramic membrane tank 2 is realized, and the timed and quantitative injection of three-phase centrifugal liquid into ceramic membrane tank 2 is realized.

[0052] In one embodiment, the three-phase centrifugal liquid resource recovery system 100 further includes an aeration device 4 connected to the ceramic membrane tank 2, which is used to mix the three-phase centrifugal liquid in the ceramic membrane tank 2 by aeration with air.

[0053] Here, it can be understood that the aeration device 4 is separated from the ceramic membrane by a set distance. The blower is connected to the aeration device 4, and when the blower is working, gas escapes from the aeration device 4. In this way, the aeration device 4 can scrape the surface of the ceramic membrane through aeration, which can prevent sedimentation and alleviate ceramic membrane fouling. At the same time, when the three-phase centrifugal liquid enters the ceramic membrane tank 2, the three-phase centrifugal liquid is stirred by the aeration device 4, and the water quality is homogenized by air aeration, thereby improving the reaction efficiency.

[0054] It needs to be further explained that the aeration device 4 includes, but is not limited to, an aeration blower.

[0055] By adopting the above technical solution, the aeration device 4 can prevent sedimentation in the ceramic membrane tank 2, alleviate the pollution of the ceramic membrane, and improve the reaction efficiency of the three-phase centrifugal liquid.

[0056] In one embodiment, the three-phase centrifugal liquid resource recovery system 100 further includes a clear water tank 5, which is connected between the ceramic membrane tank 2 and the MVR device 3, and is used to store the clear water produced from the ceramic membrane tank 2.

[0057] Here, it can be understood that the ceramic membrane tank 2 is connected to the clear water tank 5, for example, by connecting the ceramic membrane to the clear water tank 5 through a pipeline, so that the clear water filtered by the ceramic membrane can be transported to the clear water tank 5.

[0058] By adopting the above technical solution, it is possible to collect clean water after it has been filtered through a ceramic membrane, thereby improving the recycling rate of clean water.

[0059] In one embodiment, the three-phase centrifugal liquid resource recovery system 100 further includes a water production device 6, which is connected between the ceramic membrane tank 2 and the clear water tank 5. The water production device 6 is used to drive clear water from the ceramic membrane tank 2 to the clear water tank 5.

[0060] Here, it can be understood that the water production device 6 is used to draw clean water from the ceramic membrane tank 2. The water production device 6 includes, but is not limited to, a water production pump. Specifically, the ceramic membrane tank 2 is connected to the clean water tank 5 through the water production pump. The water production pump connects the ceramic membrane to the clean water tank 5 through a pipeline. In this way, the water production pump can deliver the clean water filtered by the ceramic membrane to the clean water tank 5.

[0061] By adopting the above technical solution, the clear water formed by the primary filtration of the ceramic membrane tank 2 can flow to the clear water tank 5, thereby achieving the collection of clear water.

[0062] In one embodiment, the three-phase centrifugal liquid resource recovery system 100 further includes a backwash water device 7, which is connected between the clear water tank 5 and the ceramic membrane tank 2. The backwash water device 7 is used to drive the crude carbon source from the clear water tank 5 to the ceramic membrane tank 2 to rinse the ceramic membrane.

[0063] Here, it can be understood that the backwash water device 7 includes, but is not limited to, a backwash water pump, which connects the ceramic membrane tank 2 to the clear water tank 5. For example, the backwash water pump connects the ceramic membrane tank 2 to the clear water tank 5 through a pipeline, so that the backwash water pump can use the clear water in the clear water tank 5 to backwash the ceramic membrane.

[0064] By adopting the above technical solution, the backwash water pump uses clean water from the clean water tank 5 to backwash the ceramic membrane, remove the blockage in the ceramic membrane pores, and maintain the working flux of the ceramic membrane.

[0065] In one embodiment, the three-phase centrifugal liquid resource recovery system 100 further includes a sludge discharge device 8, which is connected to the ceramic membrane tank 2 and is used to discharge insoluble solids from the ceramic membrane tank 2.

[0066] Here, it can be understood that the sludge removal device 8 includes, but is not limited to, a sludge pump, which is located at the bottom of the ceramic membrane tank 2 and is used to remove insoluble solids deposited in the ceramic membrane tank 2.

[0067] By adopting the above technical solution, the efficiency of insoluble solids discharge from ceramic membrane tank 2 has been improved.

[0068] In one embodiment, the ethanol concentration of the refined carbon source is higher than that of the crude carbon source.

[0069] It is understandable that the ethanol concentration of coarse carbon source (permeate water from ceramic membrane system) is higher than that of refined carbon source (permeate water from MVR system).

[0070] By adopting the above technical solution, the three-phase centrifugal resource recovery system of this embodiment is suitable for adding carbon sources in wastewater denitrification processes, thereby improving the utilization rate of three-phase centrifugal liquid resources.

[0071] Secondly, a method for resource recovery of three-phase centrifugal liquid is provided, wherein the three-phase centrifugal liquid is processed using the three-phase centrifugal liquid resource recovery system 100 described above to obtain crude carbon source and refined carbon source.

[0072] Here, it can be understood that wastewater denitrification is the process of treating wastewater to remove nitrogen in order to prevent eutrophication of water bodies. Specifically, COD: Chemical Oxygen Demand. The higher the COD, the more organic pollutants are in the water, and the more serious the pollution. Total Nitrogen: Abbreviated as TN, refers to the total amount of nitrogen-containing compounds in wastewater, which are divided into organic nitrogen, ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen.

[0073] By adopting the above technical solution, based on the advantages of the three-phase centrifugal liquid resource recovery system 100 of the above embodiment, the three-phase centrifugal liquid resource recovery method of this embodiment can filter out most of the insoluble solids in the three-phase centrifugal liquid, produce crude carbon source (permeable water of ceramic membrane system) and refined carbon source (permeable water of MVR system), which is suitable for adding carbon source in wastewater denitrification process and improves the utilization rate of three-phase centrifugal liquid resource recovery.

[0074] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A three-phase centrifugal liquid resource recovery system, characterized in that, include: Three-phase centrifugal liquid device, the three-phase centrifugal liquid device is used to output three-phase centrifugal liquid; A ceramic membrane tank is connected to the three-phase centrifuge device. The ceramic membrane tank is used to filter insoluble solids in the three-phase centrifuge and reduce the total nitrogen in the three-phase centrifuge to form a crude carbon source. The ceramic membrane tank is equipped with a ceramic membrane with catalytic function. When the three-phase centrifuge is added to the ceramic membrane tank, the ceramic membrane is immersed in the three-phase centrifuge. The three-phase centrifuge undergoes hydrolysis, acidification, and denitrification reactions in the ceramic membrane tank to remove total nitrogen. The MVR device recompresses the crude carbon source using steam machinery to form a refined carbon source; The three-phase centrifugal liquid resource recovery system also includes an aeration device connected to the ceramic membrane tank. The aeration device is used to mix the three-phase centrifugal liquid in the ceramic membrane tank by aeration with air.

2. The three-phase centrifugal liquid resource recovery system as described in claim 1, characterized in that, The three-phase centrifugal liquid device includes a three-phase centrifugal mechanism and a solid phase material outlet, an oil phase material outlet, and a liquid phase material outlet disposed on the three-phase centrifugal mechanism. The three-phase centrifugal mechanism is used to separate kitchen waste slurry into solid phase material, oil phase material, and liquid phase material. The solid phase material outlet is used to output the solid phase material, the oil phase material outlet is used to output the oil phase material, and the liquid phase material outlet is used to output the liquid phase material. The liquid phase material is the three-phase centrifugal liquid, and the liquid phase material outlet is connected to the ceramic membrane tank.

3. The three-phase centrifugal liquid resource recovery system as described in claim 1, characterized in that, The three-phase centrifugal liquid device includes a three-phase centrifugal liquid storage container, which is connected to the ceramic membrane tank.

4. The three-phase centrifugal liquid resource recovery system as described in claim 1, characterized in that, The three-phase centrifugal liquid resource recovery system also includes a clear water tank, which is connected between the ceramic membrane tank and the MVR device, and is used to store the clear water produced by the ceramic membrane tank.

5. The three-phase centrifugal liquid resource recovery system as described in claim 4, characterized in that, The three-phase centrifugal liquid resource recovery system also includes a water production device, which is connected between the ceramic membrane tank and the clear water tank. The water production device is used to drive clear water from the ceramic membrane tank to the clear water tank.

6. The three-phase centrifugal liquid resource recovery system as described in claim 4, characterized in that, The three-phase centrifugal liquid resource recovery system also includes a backwash water device, which is connected between the clear water tank and the ceramic membrane tank. The backwash water device is used to drive clear water from the clear water tank to the ceramic membrane tank to rinse the ceramic membrane.

7. The three-phase centrifugal liquid resource recovery system according to any one of claims 1 to 6, characterized in that, The three-phase centrifugal liquid resource recovery system also includes a sludge discharge device, which is connected to the ceramic membrane tank and is used to discharge the insoluble solids from the ceramic membrane tank.

8. The three-phase centrifugal liquid resource recovery system according to any one of claims 1 to 6, characterized in that, The ethanol concentration of the refined carbon source is higher than that of the crude carbon source.

9. A method for resource recovery of three-phase centrifugal liquid, characterized in that, The three-phase centrifugal liquid is processed using the three-phase centrifugal liquid resource recovery system as described in any one of claims 1 to 8 to obtain the crude carbon source and the refined carbon source.

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