Kitchen garbage wastewater treatment system

Abstract

The utility model belongs to a wastewater treatment system, and particularly relates to a kitchen garbage wastewater treatment system which comprises a coarse filter tank, a water collecting well, an oil removal tank, a regulating tank, a UASB anaerobic reaction tank, an SBR or AO biochemical reaction tank, a mud-water separation tank and a clean water tank which are sequentially arranged along the treatment direction, an oil collecting device for capturing and collecting grease on the surface of the wastewater is arranged in the oil removal tank and comprises an oil collecting component for collecting oil and an oil receiving component for collecting grease on the oil collecting component. According to the utility model, the oil collecting component and the oil collecting component are combined, the cavity is formed in the oil collecting plate and is communicated with the cold source, and the oil is solidified by adopting the cooling effect of the cold source, so that the oil on the surface of wastewater can be effectively captured and collected, and the oil is ensured to be fully collected.

Description

Technical Field

[0001] This utility model relates to wastewater treatment systems, and more particularly to a kitchen waste wastewater treatment system. Background Technology

[0002] Kitchen waste wastewater refers to the liquid waste generated during the processing of kitchen waste. This wastewater contains high concentrations of organic matter, grease, suspended solids, and potentially pathogenic microorganisms. If it is discharged directly without proper treatment, it will have a serious impact on the environment and public health.

[0003] Oil and grease in wastewater have a significant impact on wastewater treatment. First, oil and grease form a thin film on the water surface, hindering air-water contact, reducing aeration efficiency, and thus affecting oxygen transfer in aerobic treatment processes. This leads to decreased microbial activity and poorer treatment results. Second, high concentrations of oil and grease can be toxic to microorganisms, especially aerobic microorganisms, while simultaneously potentially promoting the growth of certain microorganisms, altering the microbial community structure in the wastewater treatment system and affecting treatment effectiveness. Furthermore, oil and grease easily solidify in wastewater treatment systems, especially at low temperatures, forming solid deposits that can clog pipes, pumps, valves, and other equipment, causing system malfunctions and increasing maintenance costs.

[0004] Therefore, removing grease from wastewater is a crucial step in wastewater treatment. Currently, the treatment effect for grease in wastewater is not ideal. Utility Model Content

[0005] The purpose of this invention is to provide a kitchen waste wastewater treatment system that, after coarse filtration, efficiently removes grease from the wastewater and then performs deep treatment, thereby improving the treatment effect of kitchen waste wastewater.

[0006] The present invention adopts the following technical solution:

[0007] A kitchen waste wastewater treatment system includes a coarse filter, a collection well, an oil removal tank, an equalization tank, a UASB anaerobic reactor, an SBR or AO biochemical reactor, a sludge-water separation tank, and a clear water tank arranged sequentially along the treatment direction. The oil removal tank is equipped with an oil collection device for capturing and collecting grease on the surface of the wastewater. The oil collection device includes an oil collection component for collecting oil and an oil collection component for collecting grease on the oil collection component.

[0008] Preferably, the oil collecting component includes a mounting frame spanning above the oil removal tank, a sliding rail mounted on the mounting frame, an oil collecting element slidably connected to the sliding rail, and a first driving component for driving the oil collecting element to move along the sliding rail.

[0009] Preferably, the oil collecting component includes at least one oil collecting plate, and the oil collecting plate has a cavity that is connected to a cold source.

[0010] Preferably, the oil collecting component is connected to the sliding track via a mounting base, the oil collecting component is rotatably connected to the mounting base, and the oil collecting component is driven to rotate by a second driving component.

[0011] Preferably, an oil collection mesh bag is provided behind the oil collecting plate.

[0012] Preferably, the end of the mounting bracket is mounted to the wall of the oil removal tank via a lifting structure.

[0013] Preferably, the oil collection component includes an oil scraping structure and an oil collection tank. The oil scraping structure includes an oil scraping track installed on the mounting frame or the wall of the oil removal tank, an oil scraping blade installed on the oil scraping track, and a third driving component for driving the oil scraping blade to slide along the oil scraping track. The oil collection tank is located at one end of the oil scraping track.

[0014] Preferably, the mounting bracket has multiple brackets arranged in parallel, increasing the stability of the equipment.

[0015] Preferably, the BR or AO biochemical reaction tank is equipped with a microbial agent dosing device for periodic addition of microbial agents.

[0016] By implementing the above technical solution, this utility model has the following beneficial effects:

[0017] 1. This utility model, through the combination of oil collection component and collection component, can effectively capture and collect grease on the surface of wastewater, ensuring that the grease is fully collected.

[0018] 2. The oil collecting plate of this invention has a cavity connected to a cold source. The cooling effect of the cold source causes the grease to solidify, making it easier to capture and collect. This helps improve the oil removal efficiency and reduces the impact of grease on subsequent processing steps. Attached Figure Description

[0019] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to aid in understanding the technical solution of this utility model, wherein:

[0020] Figure 1 This is a schematic diagram of a processing system according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the oil removal tank in the treatment system shown in this utility model;

[0022] Figure 3 This is a schematic diagram of the oil collection component shown in the present invention.

[0023] In the diagram, 10-coarse filter, 20-water collection well, 30-oil removal tank, 31-oil collection device, 40-regulation tank, 50-UASB anaerobic reaction, 60-AO biochemical reaction tank, 70-sludge-water separation tank, and 80-clear water tank. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific implementation examples.

[0025] It should be noted that the following implementation examples are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the following implementation examples, those skilled in the art should understand that they can still modify the technical solutions recorded in each implementation example, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of each implementation example of this utility model.

[0026] Example 1

[0027] This embodiment provides a kitchen waste wastewater treatment system; see [link / reference] Figure 1 The system includes a coarse filter 10, a collection well 20, an oil removal tank 30, an equalization tank 40, a UASB anaerobic reactor 50, an SBR or AO biological reactor 60, a sludge-water separation tank 70, and a clear water tank 80, arranged sequentially along the wastewater treatment direction. In other embodiments, the AO biological reactor can be replaced by an SBR.

[0028] The primary function of the coarse filter 10 is to remove large suspended solids from the wastewater, such as food scraps and plastic fragments. In this embodiment, a screen is installed in the coarse filter 10 to intercept and remove larger solids for coarse filtration of kitchen waste wastewater. The collection well 20 collects the coarsely filtered wastewater. A stirring structure is typically installed in the collection well to further break up grease clumps in the wastewater, allowing the grease to float and facilitating subsequent oil removal, thus improving oil removal efficiency. The oil removal tank 30 primarily removes grease from the wastewater. The equalization tank 40 primarily regulates the flow rate and water quality of the wastewater, making it more stable and conducive to subsequent treatment. The UASB anaerobic reactor 50 primarily decomposes organic matter in the wastewater under anaerobic conditions using anaerobic microorganisms, while simultaneously removing some COD and BOD. The SBR or AO biological reactor 60 primarily removes organic matter and nutrients such as nitrogen and phosphorus from the wastewater. The sludge-water separation tank 70 separates treated wastewater and sludge. Through sedimentation or filtration, suspended solids and sludge are separated from the wastewater. The clarified water can be discharged in compliance with standards or flow into the clear water tank 80 for reuse. The various parts are connected sequentially by pipelines.

[0029] The oil removal tank 30 is configured as a rectangular tank, see [reference]. Figure 2 An oil collection device is installed above the pool to capture and collect grease from the surface of the wastewater. The oil collection device includes an oil collection component 31 for collecting oil and an oil collection component 32 for collecting grease from the oil collection component.

[0030] Specifically, see Figure 2 and Figure 3 The oil collecting component 31 includes a mounting frame 31a spanning above the oil removal tank 30, a sliding rail 31b mounted on the mounting frame 31a, an oil collecting element 31c slidably connected to the sliding rail 31b, and a first driving component 31d that drives the oil collecting element 31c to move along the sliding rail. The first driving component 31d is a motor. A lead screw 31e is mounted on one side of the sliding rail 31b, parallel to the sliding rail 31b. The oil collecting element 31c is mounted on the lead screw 31e via a guide block 31f. The motor drives the lead screw 31e to rotate, which is converted into linear movement of the oil collecting element 31c along the lead screw 31e and the sliding rail 31b.

[0031] The end of the mounting bracket 31a is installed on the wall of the oil removal tank 30 via a lifting structure 33. The height of the oil collecting component can be adjusted according to the water depth, ensuring that the component is always at or slightly submerged in the water, thus facilitating the collection of grease floating on the surface. The lifting structure 33 is implemented using a motor-controlled lifting rod, as is common in the art. The mounting bracket can be a single unit or multiple units arranged in parallel; multiple units improve the stability of the oil collecting component 31's movement. If only one unit is used, the mounting bracket 31a is positioned in the middle of the oil removal tank 30.

[0032] In another specific embodiment, the oil collecting component is connected to the sliding rail via a mounting base, and the oil collecting component and the mounting base are rotatably connected. The oil collecting component is driven to rotate by a second driving component.

[0033] The oil collecting component 31c includes an oil collecting plate with a cavity inside. One end of the oil collecting plate has an inlet, and the other end has an outlet. The cavity is connected to a cold source; the cold source enters through the inlet and exits through the outlet, thus purifying the interior of the cavity. The cold source can be a cold water source or a cold air source. The front surface of the oil collecting plate is sloped to better adhere to grease.

[0034] An oil collection mesh bag (not shown in the figure) is installed behind the oil collection plate. The oil collection mesh bag can be hung on the oil collection plate by hooks. The "behind" here refers to the side of the outlet of the oil removal tank. Because the oil collection device is in the opposite direction of the water flow during the oil collection process, the oil collection effect is the best. The oil collection mesh bag is located behind the oil collection plate and can collect solidified oil blocks that have been cooled by the oil collection plate but have fallen off the oil collection plate.

[0035] In this embodiment, the oil collection component 32 includes an oil scraping structure 32a and an oil collection tank 32b. The oil scraping structure 32a is used to scrape off solidified grease on the oil collection plate, and the oil collection tank 32b is used to collect the grease scraped off by the oil scraping structure 32a. Specifically, the oil scraping structure 32a includes an oil scraping track 32a-1 installed on the wall of the oil removal tank 30, an oil scraping blade 32a-2 installed on the oil scraping track 32a-1, and a third driving component 32a-3 that drives the oil scraping blade 32a-2 to slide along the oil scraping track. The oil collection tank 32b is located at one end of the oil scraping track 32a-1. The oil scraping surface of the oil scraping blade 32a-2 is also inclined, which cooperates with the inclined surface of the oil collection plate to achieve a better oil scraping effect. The third driving component 32a-3 can drive the oil scraping blade 32a-2 by means of a hydraulic cylinder and telescopic rod control, or by means of a motor and lead screw controlling the oil collection component by the first driving component.

[0036] A microbial agent dosing device is installed on the BR or AO biochemical reaction tank for periodic dosing of microbial agents. The microbial agent used in this embodiment is a denitrification microbial preparation with better effect developed by the applicant. The NHNS microbial agent previously developed by the applicant includes 5 kg of microbial agent A, 1 kg of microbial agent B, and 5 kg of nutrient carrier. Microbial agent A is mixed according to the following composition: 0.5 kg of Nitrospira, 0.5 kg of Nitrospira nitrifying, 0.5 kg of Nitrobacterium velutipes, 2 kg of Bacillus, 0.5 kg of Trichomonas spp. (selected from Trichomonas spp.), 0.5 kg of Rawstone's spp. (selected from eutrophic Rawstone's), and 0.5 kg of Shortwave Monoclonal bacteria (selected from Shortwave Monoclonal bacteria). Microbial agent B is mixed according to the following composition: 0.25 kg of Candida albicans, 0.25 kg of white rot fungi, and 0.5 kg of Coccidioidomyces. The nutrient carrier is mixed according to the following composition: 20 parts polyhydroxyalkane, 20 parts mica, 35 parts starch, 5 parts potassium dihydrogen phosphate, 1 part biotin, 1 part folic acid, 0.5 parts vitamin B12, 0.5 parts pantothenic acid, 0.5 parts niacin, and 0.2 parts riboflavin.

Claims

1. A kitchen garbage wastewater treatment system comprising, in order along a treatment direction, a coarse filter tank, a collecting well, an oil removal tank, a regulating tank, a UASB anaerobic reaction, an SBR or AO biochemical reaction tank, and a sludge-water separation tank and a clear water tank, characterized in that, The oil removal tank is provided with an oil collecting device for capturing and collecting grease on the surface of wastewater, which comprises an oil collecting component for oil collection and an oil collecting component for collecting grease on the oil collecting component.

2. The kitchen waste and wastewater treatment system according to claim 1, characterized in that, The oil collecting component comprises a mounting frame arranged horizontally above the oil removal tank, a sliding track arranged on the mounting frame, an oil collecting piece slidingly connected to the sliding track, and a first driving component for driving the oil collecting piece to move along the sliding track.

3. The kitchen waste and wastewater treatment system according to claim 2, wherein The oil collecting piece comprises at least one oil collecting plate, which is provided with a cavity in communication with a cold source.

4. The kitchen waste and wastewater treatment system according to claim 2, wherein The oil collecting piece is connected to the sliding track through a mounting seat, and the oil collecting piece is rotatably connected to the mounting seat and driven to rotate by a second driving component.

5. The kitchen waste and wastewater treatment system according to claim 3, wherein An oil collecting net bag is arranged at the rear of the oil collecting plate.

6. The kitchen waste and wastewater treatment system according to claim 2, wherein The end of the mounting frame is mounted to the tank wall of the oil removal tank through a lifting structure.

7. The kitchen waste and wastewater treatment system according to claim 2, wherein The oil collecting component comprises a scraping structure and an oil collecting tank, the scraping structure comprises a scraping track mounted to the mounting frame or the tank wall of the oil removal tank, a scraping piece mounted to the scraping track, and a third driving component for driving the scraping piece to slide along the scraping track, and the oil collecting tank is located at one end of the scraping track.

8. The kitchen waste and wastewater treatment system according to claim 2, wherein The mounting frame has a plurality of parallel rods.

9. The kitchen waste and wastewater treatment system according to claim 1, wherein A bacteria agent feeding device is arranged on the BR or AO biochemical reaction tank to periodically feed bacteria agent.

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