Kitchen waste wastewater treatment system

Abstract

The invention provides a kitchen waste wastewater treatment system. A grease biological treatment unit is used for performing grease treatment on filtered and precipitated grease-containing wastewater; the anaerobic treatment unit is used for performing anaerobic treatment on the wastewater subjected to grease treatment; the aerobic treatment unit is used for performing aerobic treatment on the wastewater subjected to anaerobic treatment; the detection unit is used for carrying out multiple sampling detections on the wastewater subjected to aerobic treatment; the comprehensive treatment unit is used for carrying out directional treatment and disinfection on the wastewater subjected to aerobic treatment according to a detection result; and the data management unit is used for storing the detection data and the user demand data, performing matching analysis on the detection data and the user demand data and then sending the detection data and the user demand data to the upper management terminal. According to the invention, the grease-containing wastewater is subjected to microbial degradation through the grease biological treatment unit, physical and chemical modes are not needed, and after user demand data are collected, detected and matched, the eutrophic wastewater can be directly conveyed to a demand user, and subsequent multi-stage treatment on the eutrophic wastewater is not needed.

Description

Technical Field

[0001] The invention relates to the field of restaurant kitchen waste, and in particular to a restaurant kitchen waste wastewater treatment system. Background Art

[0002] Kitchen waste accounts for about 50%-60% of domestic waste. It refers to the waste generated in residents' daily life and food processing, catering services, and unit catering activities, including discarded vegetable leaves, leftovers, leftover rice, fruit peels, egg shells, tea dregs, bones, etc. Its main sources are family kitchens, restaurants, hotels, canteens, markets and other industries related to food processing. Kitchen waste contains a high amount of water and organic matter. After proper treatment and processing, kitchen waste can be converted into new resources, which can be used as fertilizer, feed, and can also produce biogas for fuel or power generation. The oil and fat part can be used to prepare biofuels.

[0003] Kitchen wastewater refers to high-concentration organic wastewater containing edible waste oil after solid-liquid separation of kitchen waste. Kitchen wastewater is rich in organic matter such as starch, protein, and fat, which makes the biological oxygen demand (BOD) and chemical oxygen demand (COD) of the wastewater very high. The conventional treatment method is to separate the waste oil from the wastewater by physical and chemical methods, and then treat them separately. The physical and chemical treatment of oil not only requires a large space and high cost, but also requires regular cleaning of physical equipment and maintenance and replacement of consumable parts, which also causes great costs. In addition, the current research on kitchen wastewater at home and abroad is mainly focused on the resource utilization of waste oil after oil-water separation. For the separated degreased kitchen wastewater, it is generally discharged directly after physical and chemical treatment to meet the standards. Not only does it require continued investment in treatment costs, but the treated water is directly discharged, resulting in waste. Summary of the invention

[0004] In order to solve the problems existing in the background technology, the present invention proposes a restaurant kitchen waste water treatment system.

[0005] A kitchen wastewater treatment system, comprising: Grease biological treatment unit, used for grease treatment of grease-containing wastewater after filtration and sedimentation; an anaerobic treatment unit configured to be connected to the grease biological treatment unit for anaerobically treating the grease-treated wastewater; an aerobic treatment unit configured to be connected to the anaerobic treatment unit for aerobic treatment of the anaerobic treated wastewater; A detection unit is configured to be disposed in the integrated treatment unit and is used to perform various sampling and detection on the wastewater after aerobic treatment; The integrated treatment unit is configured to be connected to the aerobic treatment unit and is used to perform targeted treatment and disinfection on the aerobic treated wastewater according to the test results; The data management unit is configured to connect the detection unit and the upper management terminal, and is used to store the detection data and the user demand data, and send the detection data and the user demand data to the upper management terminal after matching and analyzing.

[0006] Based on the above, the grease biological treatment unit is a biodegradation tank, which is used to degrade grease in wastewater by grease-degrading bacteria.

[0007] Based on the above, the anaerobic treatment unit is an anaerobic digester, which is used to decompose organic matter in wastewater by anaerobic microorganisms.

[0008] Based on the above, the aerobic treatment unit is a biofilm treatment unit, which is used to further degrade organic matter in the wastewater through aerobic microorganisms.

[0009] Based on the above, the detection unit is a variety of sensors, including at least a pH sensor, an ammonia nitrogen sensor, a calcium ion sensor, a COD sensor and a water quality BOD analyzer.

[0010] Based on the above, the integrated treatment unit is a water storage tank, which is used to disinfect and direct the wastewater before storing it and waiting for transportation and discharge.

[0011] Based on the above, it includes a user management unit configured to connect to a host management terminal and store user demand data, including at least the user's nursery type information, nutrient-rich wastewater demand type information and demand quantity information.

[0012] Based on the above, it includes a soil sensor, which is set in the user's nursery and communicates with the user management unit, and is used to generate user demand data information based on the detection information.

[0013] Compared with the prior art, the present invention has outstanding substantial features and significant progress. Specifically, the present invention uses a grease biological treatment unit to perform microbial degradation on wastewater containing grease, without the need for physical and chemical methods, occupies a small area and does not require subsequent cleaning, treatment, maintenance and replacement of equipment. By collecting user demand data and performing testing and matching, nutrient-rich wastewater that meets the demand can be directly delivered to the user in need, thereby eliminating the need for subsequent multi-stage treatment and direct discharge of the nutrient-rich wastewater, greatly reducing site occupation, treatment costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figure 1 As shown, a restaurant kitchen waste wastewater treatment system includes: a grease biological treatment unit, which is used to treat grease-containing wastewater after filtration and precipitation; an anaerobic treatment unit, which is configured to be connected to the grease biological treatment unit, and is used to perform anaerobic treatment on wastewater treated with grease; an aerobic treatment unit, which is configured to be connected to the anaerobic treatment unit, and is used to perform aerobic treatment on wastewater after anaerobic treatment; a detection unit, which is configured to be arranged in the comprehensive treatment unit, and is used to perform multiple sampling and detection on the wastewater after aerobic treatment; the comprehensive treatment unit is configured to be connected to the aerobic treatment unit, and is used to perform directional treatment and disinfection on the wastewater after aerobic treatment according to the detection results; a data management unit, which is configured to be connected to the detection unit and the upper management terminal, and is used to store detection data and user demand data, and send the detection data and user demand data to the upper management terminal after matching and analyzing.

[0017] When in use, the high-concentration organic wastewater containing edible waste oil after solid-liquid separation and filtration precipitation of the kitchen waste is input into the oil biological treatment unit. After the oil biological treatment unit degrades the oil in the wastewater, it is transported to the anaerobic treatment unit for anaerobic treatment, and then transported to the aerobic treatment unit for aerobic treatment to further degrade the organic matter in the wastewater. Finally, the wastewater is transported to the comprehensive treatment unit for final treatment and storage. A variety of detection units are set in the comprehensive treatment unit. According to the test results, the target components in the wastewater are directional treated, such as adjusting the pH value, inactivating microorganisms, etc., and the wastewater is disinfected such as ultraviolet disinfection, etc., and finally eutrophic wastewater is obtained. The data management unit stores the final test data, and after matching and analyzing the acquired user demand information with the test data, the matching user information is screened and sent to the upper management terminal. The upper management terminal contacts the matching users and transports the eutrophic wastewater to the matching users.

[0018] Specifically, the grease biological treatment unit is a biodegradation tank, which is used to degrade the grease in the wastewater by grease-degrading bacteria. Physical and chemical treatments require large investments, occupy a large area, have complex processes, and are prone to secondary pollution. The grease in the kitchen wastewater mainly includes soybean oil, rapeseed oil and peanut oil. Through microorganisms with grease degradation ability, the grease is used as a carbon source and energy source, and the lipase and other degradation enzymes produced during the growth of microorganisms hydrolyze the grease into glycerol and fatty acids, and finally decompose and oxidize into metabolites such as H2O and CO2. The grease degradation rate can reach more than 90%. The biological treatment process has small investment, low cost, high efficiency and no secondary pollution. The anaerobic treatment unit is an anaerobic digester, which is used to decompose organic matter in the wastewater by anaerobic microorganisms. Under anaerobic conditions, anaerobic microorganisms are used to decompose organic matter in the wastewater into gases such as methane and carbon dioxide, and sludge is produced at the same time. Anaerobic digestion can reduce the COD and BOD of the wastewater, creating favorable conditions for subsequent treatment. The aerobic treatment unit is a biofilm treatment unit, which is used to further degrade organic matter in the wastewater by aerobic microorganisms. Under aerobic conditions, aerobic microorganisms are used to further degrade organic matter in the wastewater, so that the wastewater reaches a higher degree of purification. In this embodiment, the aerobic treatment adopts a biofilm method, and in other embodiments, an activated sludge method may also be adopted.

[0019] The treated wastewater is discharged into the comprehensive treatment unit, which is a water storage tank with a detection unit installed inside. The detection unit is a variety of sensors, including at least a pH sensor, an ammonia nitrogen sensor, a calcium ion sensor, a COD sensor, and a water quality BOD analyzer, etc. The detection data is sent to the data management unit. According to the detection results, the target components in the wastewater are treated in a targeted manner, such as adjusting the pH value, inactivating microorganisms, etc., and the wastewater is disinfected, such as ultraviolet disinfection, etc., and finally nutrient-rich wastewater is obtained, stored, and waits for transportation and discharge.

[0020] Preferably, the restaurant kitchen wastewater treatment system also includes a user management unit, which is configured to connect to the upper management terminal and is used to store user demand data, including at least the user's nursery type information, nutrient-rich wastewater demand type information and demand information. The user is actually a cooperative plant planting nursery / base enterprise and cultivated land grower, etc. In reality, with the development of agricultural technology, soil sensors are widely used to obtain soil moisture conditions such as temperature and humidity, pH value, conductivity, nitrogen, phosphorus and potassium content, etc., and then carry out scientific planting. Therefore, by setting the soil sensor in the user's nursery and communicating with the user management unit, the soil detection information of the cooperative user is obtained, and the user demand data information is generated according to the detection information. The data management unit performs matching analysis based on the detection data of the wastewater and the user demand data information. After obtaining the matching user land information that meets the irrigation requirements, the nutrient-rich wastewater can be transported to the matching user for irrigation without the need for subsequent nutrient-rich water de-nutrition discharge, which not only saves space and cost, but also improves efficiency.

[0021] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A kitchen wastewater treatment system, characterized in that: include: Grease biological treatment unit, used for grease treatment of grease-containing wastewater after filtration and sedimentation; an anaerobic treatment unit configured to be connected to the grease biological treatment unit for anaerobically treating the grease-treated wastewater; an aerobic treatment unit configured to be connected to the anaerobic treatment unit for aerobic treatment of the anaerobic treated wastewater; A detection unit is configured to be disposed in the integrated treatment unit and is used to perform various sampling and detection on the wastewater after aerobic treatment; The integrated treatment unit is configured to be connected to the aerobic treatment unit and is used to perform targeted treatment and disinfection on the aerobic treated wastewater according to the test results; The data management unit is configured to connect the detection unit and the upper management terminal, and is used to store the detection data and the user demand data, and send the detection data and the user demand data to the upper management terminal after matching and analyzing them.

2. The kitchen waste water treatment system according to claim 1, characterized in that: The grease biological treatment unit is a biodegradation tank, which is used to degrade grease in wastewater by using grease-degrading bacteria.

3. The kitchen waste water treatment system according to claim 1, characterized in that: The anaerobic treatment unit is an anaerobic digester, which is used to decompose organic matter in wastewater by anaerobic microorganisms.

4. The restaurant kitchen wastewater treatment system according to claim 1, characterized in that: The aerobic treatment unit is a biofilm treatment unit, which is used to further degrade organic matter in the wastewater by aerobic microorganisms.

5. The restaurant kitchen wastewater treatment system according to claim 1, characterized in that: The detection unit is a variety of sensors, including at least a pH sensor, an ammonia nitrogen sensor, a calcium ion sensor, a COD sensor and a water quality BOD analyzer.

6. The restaurant kitchen waste water treatment system according to claim 1, characterized in that: The integrated treatment unit is a water storage tank, which is used to disinfect and direct the wastewater before storing it and waiting for transportation and discharge.

7. The restaurant kitchen wastewater treatment system according to claim 1, characterized in that: It includes a user management unit configured to connect to a host management terminal and store user demand data, including at least the user's nursery type information, nutrient-rich wastewater demand type information and demand quantity information.

8. The restaurant kitchen wastewater treatment system according to claim 7, characterized in that: It includes a soil sensor, which is arranged in a user's nursery and is communicatively connected to a user management unit, and is used to generate user demand data information according to detection information.

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