Integrated kitchen wastewater liquid carbon source preparation device

Abstract

The utility model is applicable to the technical field of kitchen wastewater recovery treatment, and particularly relates to an integrated kitchen wastewater liquid carbon source preparation device which comprises a working platform, a flocculation basin is arranged on the surface of the working platform, an annular cooling pipeline is arranged in the flocculation basin, and a temperature sensor is mounted in the flocculation basin; a flocculating agent mixing box is arranged on the surface of the working platform, a stirring assembly is arranged in the flocculating agent mixing box, and a metering pump is mounted on the side surface of the flocculating agent mixing box. According to the utility model, the temperature of kitchen wastewater in the flocculation basin is monitored in real time through the temperature sensor, and an external refrigerant system is used for accurately cooling, so that the temperature is always maintained in an ideal range, and the effect of a flocculant is not influenced. And secondly, a flocculating agent mixing box can be used for respectively preparing PFS and PAM solutions, and uniform adding is realized through a metering pump and a liquid conveying pipeline system, so that full mixing of the flocculating agent and the kitchen wastewater is ensured, and the treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste water recycling and treatment, in particular to an integrated device for preparing liquid carbon source from kitchen waste water. Background Technique

[0002] Kitchen waste water is the aqueous phase with high organic matter content generated in the process of kitchen waste treatment, usually formed in the processes of fine separation pulping and three-phase separation. Due to its rich organic substances, traditional treatment methods often mix the kitchen waste water with the solid phase and then send it to a wet anaerobic system for fermentation to produce biogas. However, this process is complex and costly, especially when subsequent operations such as solid-liquid separation and sewage treatment are required, and more stringent requirements are imposed on equipment and technology.

[0003] When the prior art treats kitchen waste water, operations such as adding medicine, stirring, and pumping are usually completed in different devices, lacking systematic integration. For example, the addition of flocculant is usually carried out in one device, while the stirring of waste water and the pumping of supernatant are completed in other devices respectively. This decentralized treatment method not only increases the complexity of operation and the need for manual intervention, but also easily leads to problems such as uneven addition of flocculant, insufficient stirring effect, and untimely pumping of supernatant, ultimately affecting the overall treatment effect and efficiency.

[0004] Due to the lack of effective linkage in these independent operation links, the overall integration degree of kitchen waste water treatment is relatively low, and it is difficult to achieve an efficient and automated treatment process. Therefore, there is an urgent need for a device with a higher integration degree, which can complete key operations such as adding medicine, stirring, and pumping in the same system, simplify the process flow, reduce the treatment cost, and improve the resource utilization rate. Content of the Utility Model

[0005] The purpose of the embodiment of the utility model is to provide an integrated device for preparing liquid carbon source from kitchen waste water, aiming to solve the technical problems mentioned in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution:

[0007] An integrated device for preparing liquid carbon source from kitchen waste water, comprising a working platform, on the surface of which a flocculation tank is arranged, and an annular cooling pipeline is arranged inside the flocculation tank, and a temperature sensor is installed inside the flocculation tank;

[0008] A flocculant mixing tank is provided on the surface of the working platform, and a stirring assembly is arranged inside the flocculant mixing tank. A metering pump is installed on the side of the flocculant mixing tank, and a flocculant extraction pipe and a main infusion pipe are respectively connected to both sides outside the metering pump. A number of auxiliary infusion pipes are connected to the outside of the main infusion pipe. A tap water input pipe is connected to the inside of the flocculant mixing tank, and a control valve is installed on the surface of the tap water input pipe;

[0009] An air compressor is provided on the surface of the working platform, and a main air delivery pipe is connected to the outside of the air compressor. A number of auxiliary air delivery pipes are connected to the outside of the main air delivery pipe, and a gas diffuser is installed at one end of the auxiliary air delivery pipe away from the main air delivery pipe;

[0010] A self-priming pump is provided on the surface of the working platform, and a supernatant extraction pipe is connected to the outside of the self-priming pump.

[0011] Further, one end of the flocculant extraction pipe away from the metering pump is arranged at the inner bottom of the flocculant mixing tank, one end of the auxiliary infusion pipe away from the main infusion pipe is arranged at the inner top of the flocculation tank, the gas diffuser is arranged inside the flocculation tank, and one end of the supernatant extraction pipe away from the self-priming pump is arranged inside the flocculation tank.

[0012] Further, the supernatant extraction pipe is a telescopic pipe, and a sight glass is arranged at a position on the side of the flocculation tank close to the supernatant extraction pipe.

[0013] Further, the stirring assembly includes: a stirring motor installed on the surface of the flocculant mixing tank, and a rotating rod is installed at the output end of the stirring motor, and stirring blades are installed on the surface of the rotating rod.

[0014] Further, an intelligent display screen is installed on the outside of the flocculation tank, and the intelligent display screen is electrically connected to a temperature sensor.

[0015] Further, an injection port and a discharge port are arranged on the cooling pipeline, and both the injection port and the discharge port are located outside the flocculation tank.

[0016] An integrated device for preparing liquid carbon source from kitchen waste wastewater provided by the utility model has the following beneficial effects:

[0017] First, the temperature of the food waste wastewater in the flocculation tank is monitored in real time by a temperature sensor, and an external refrigerant system is used to accurately cool it to ensure that the temperature is always maintained within the ideal range without affecting the effect of the flocculant. Secondly, the flocculant mixing tank can separately prepare PFS and PAM solutions, and through the metering pump and the infusion pipeline system, uniform dosing is achieved to ensure the full mixing of the flocculant and the food waste wastewater and improve the treatment effect. Finally, through the coordinated action of the air compressor and the gas diffuser, it is ensured that the flocculant and the food waste wastewater are fully stirred and evenly distributed. After standing and stratifying, the best flocculation effect is provided, laying a good foundation for the extraction and subsequent treatment of the supernatant. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of an integrated device for preparing liquid carbon source from food waste wastewater.

[0019] In the figure: 1, working platform; 2, flocculation tank; 3, air compressor; 4, main gas transmission pipe; 5, auxiliary gas transmission pipe; 6, gas diffuser; 7, auxiliary infusion pipe; 8, main infusion pipe; 9, tap water input pipe; 10, sight glass; 11, supernatant extraction pipe; 12, self-priming pump; 13, flocculant extraction pipe; 14, metering pump; 15, control valve; 16, stirring motor; 17, rotating rod; 18, stirring blade; 19, flocculant mixing tank. Detailed Embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model 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 only used to explain the present utility model and are not used to limit the present utility model.

[0021] The following describes in detail the specific implementation of the present utility model with reference to specific embodiments.

[0022] As Figure 1 shown, an integrated device for preparing liquid carbon source from food waste wastewater provided by an embodiment of the present utility model includes a working platform 1. A flocculation tank 2 is arranged on the surface of the working platform 1, and an annular cooling pipeline is arranged inside the flocculation tank 2. An injection port and a discharge port are arranged on the cooling pipeline, and both the injection port and the discharge port are located outside the flocculation tank 2. The injection port and the discharge port of the cooling pipeline are both connected to an external refrigerant system and can realize the circulation of the refrigerant to maintain the stable cooling effect of the system. A temperature sensor is installed inside the flocculation tank 2, and the temperature sensor is used to monitor the temperature of the food waste wastewater inside the flocculation tank 2 in real time.

[0023] The surface of the working platform 1 is provided with a flocculant mixing tank 19, and a stirring assembly is arranged inside the flocculant mixing tank 19. The flocculant mixing tank 19 is used to prepare two kinds of flocculant solutions, one is PFS solution and the other is PAM solution, and the concentrations and flow rates of the two kinds of flocculants can be controlled respectively.

[0024] A metering pump 14 is installed on the side of the flocculant mixing tank 19. The metering pump 14 has an accurate metering function and can display the extraction amount of the flocculant in real time. Flocculant extraction pipes 13 and a main infusion pipe 8 are respectively connected to both sides outside the metering pump 14. A number of auxiliary infusion pipes 7 are connected to the outside of the main infusion pipe 8. Preferably, the length of the main infusion pipe 8 is the same as the width of the pool body of the flocculation tank 2, and the distance between two adjacent auxiliary infusion pipes 7 is set at 30 cm.

[0025] A tap water input pipe 9 is connected inside the flocculant mixing tank 19, and a control valve 15 is installed on the surface of the tap water input pipe 9. The port of the tap water input pipe 9 far from the flocculant mixing tank 19 is connected to the external tap water pipe;

[0026] An air compressor 3 is arranged on the surface of the working platform 1, and a main air delivery pipe 4 is connected to the outside of the air compressor 3. A number of auxiliary air delivery pipes 5 are connected to the outside of the main air delivery pipe 4, and a gas diffuser 6 is installed at one end of the auxiliary air delivery pipe 5 far from the main air delivery pipe 4.

[0027] A self-priming pump 12 is arranged on the surface of the working platform 1, and a supernatant extraction pipe 11 is connected to the outside of the self-priming pump 12.

[0028] The supernatant refers to the relatively clear liquid part in the upper layer after the flocculation and sedimentation processes, where suspended particles and impurities settle to the bottom. It is called "supernatant" because it is located above the sediment and has a higher transparency. During the preparation of liquid carbon sources, the supernatant usually contains organic substances and other soluble components, which can be further processed or extracted to become part of the liquid carbon source. Therefore, the supernatant is one of the precursors or raw materials of the liquid carbon source and can be transformed into the final carbon source product through processing.

[0029] One end of the flocculant extraction pipe 13 far from the metering pump 14 is arranged at the inner bottom of the flocculant mixing tank 19, one end of the auxiliary infusion pipe 7 far from the main infusion pipe 8 is arranged at the inner top of the flocculation tank 2, the gas diffuser 6 is arranged inside the flocculation tank 2, and one end of the supernatant extraction pipe 11 far from the self-priming pump 12 is arranged inside the flocculation tank 2.

[0030] In an embodiment of the present utility model, the temperature sensor is used to monitor the temperature of the food waste water inside the flocculation tank 2. When the temperature of the food waste water inside the flocculation tank 2 exceeds 50 °C, the external refrigerant system is started, and the food waste water is cooled through the cooling pipeline arranged on the inner wall of the working platform 1 until the temperature drops below 50 °C. This cooling process will not affect the flocculation effect of the flocculant.

[0031] After the temperature stabilizes, the staff prepares an appropriate amount of PFS solution flocculant in the flocculant mixing tank 19. During the preparation process, the solution in the mixing tank 19 can be continuously stirred by the stirring assembly. After the PFS solution flocculant is prepared, the staff starts the metering pump 14. The metering pump 14 pumps the PFS solution flocculant into the main infusion pipe 8 through the flocculant extraction pipe 13 and evenly distributes it to a number of sub-infusion pipes 7, so that the PFS solution flocculant is evenly injected into the flocculation tank 2 and fully combined with the food waste water.

[0032] Subsequently, the air compressor 3 is started. The air compressor 3 injects gas into the main gas transmission pipe 4 and a number of sub-gas transmission pipes 5, and sprays the gas into the flocculation tank 2 through the gas diffuser 6 to fully stir and mix the food waste water and the PFS solution flocculant. Then, the PAM agent is prepared in the flocculant mixing tank 19 and added to the flocculation tank 2 in the same way. After the PAM agent is added, the air compressor 3 continues to stir the waste liquid and the flocculant inside the flocculation tank 2 for 20 minutes.

[0033] After the stirring stops, the mixed solution is left standing for about 1 hour to wait for the solution to flocculate and stratify. After the flocculation is completed, the self-priming pump 12 is started. The self-priming pump 12 extracts the supernatant inside the flocculation tank 2 through the supernatant extraction pipe 11 and enters the next preparation process of the liquid carbon source. After the extraction is completed, the impurities at the bottom of the flocculation tank 2 are discharged to prepare for the next round of production.

[0034] In this embodiment, the supernatant extraction pipe 11 is designed as a telescopic pipeline. A sight glass 10 is provided at a position on the side of the flocculation tank 2 close to the supernatant extraction pipe 11, which can be used to observe the solution stratification interface and facilitate accurate positioning of the supernatant. The telescopic design enables the supernatant extraction pipe 11 to adapt to different liquid levels inside the flocculation tank 2, ensuring the extraction of the supernatant from different depths and realizing more flexible operation.

[0035] In this embodiment, the stirring assembly includes: a stirring motor 16, which is installed on the surface of the flocculant mixing tank 19, and a rotating rod 17 is installed at the output end of the stirring motor 16, and stirring blades 18 are installed on the surface of the rotating rod 17.

[0036] When it is necessary to mix and stir the clean water and PFS solution or PAM agent inside the flocculant mixing box 19, the stirring motor 16 can be turned on, and the stirring motor 16 drives the rotating rod 17 and the stirring blade 18 to rotate so that the stirring blade 18 can fully mix the clean water and PAM agent or PFS solution.

[0037] In this embodiment, a smart display screen electrically connected to the temperature sensor is installed on the outside of the flocculation tank 2 to display the temperature of the kitchen wastewater monitored by the temperature sensor in real time, so that the staff can grasp the temperature conditions inside the flocculation tank 2 at any time and ensure accurate control of the process.

[0038] This technical solution has many significant advantages: First, the temperature of the food wastewater in the flocculation tank is monitored in real time by a temperature sensor, and the temperature is accurately reduced by an external refrigerant system to ensure that the temperature is always maintained within the ideal range without affecting the effect of the flocculant. Secondly, the flocculant mixing box can prepare PFS and PAM solutions respectively, and evenly add them through a metering pump and an infusion pipeline system to ensure that the flocculant and food wastewater are fully mixed and the treatment effect is improved. At the same time, the smart display screen displays temperature information in real time, which is convenient for operators to grasp and adjust the temperature in the pool at any time and optimize the operation process. In addition, the retractable supernatant extraction tube is used in conjunction with a sight glass to flexibly adjust the extraction height, effectively extract supernatant at different liquid level heights, and improve the preparation efficiency of the liquid carbon source. Finally, through the synergistic effect of the air compressor and the gas diffuser, the flocculant and food wastewater are fully stirred and evenly distributed, and after static stratification, the best flocculation effect is provided, laying a good foundation for the extraction and subsequent treatment of the supernatant.

[0039] The process of preparing liquid carbon source from wastewater by using this device is as follows:

[0040] Step 1: Prepare flocculation agent, dissolve 500g PAM in one ton of water, mix thoroughly, dissolve 50g PFS solution in one ton of water, mix thoroughly to obtain 5g / L PAM solution and 500mg / L PFS solution.

[0041] Step 2: Cool down the kitchen wastewater by using the heat exchange system of the flocculation tank, reducing the temperature from 70°C to 50°C.

[0042] Step 3: Add 500 mg / L PFS solution at a mud-drug ratio of 100:1, turn on the gas stirring device inside the flocculation tank, stir for 5 minutes, then add 5 g / L PAM solution at a mud-drug ratio of 50:1, and continue stirring for a total of 20 minutes.

[0043] Step 4: Let stand and separate into layers. After stirring for 20 minutes, stop stirring and let stand for 1 hour, waiting for the wastewater to stand and separate naturally.

[0044] Step 5: Extract the supernatant. The wastewater stratification interface can be seen through the sight glass on the edge of the flocculation tank. Move the position of the retractable pipeline fixed on the tank wall. After ensuring that the pipeline opening is at the stratification interface, start the extraction device and evacuate the supernatant until the pump has no flow, then stop the extraction.

[0045] Step 6: Discharge the bottom impurities. Discharge the bottom flocs through the bottom drain valve, and they can be re-concentrated and processed into insect feed.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated kitchen wastewater liquid carbon source preparation device, comprising a working platform (1), characterized in that: A flocculation tank (2) is arranged on the surface of the working platform (1), and a ring-shaped cooling pipeline is arranged inside the flocculation tank (2), and a temperature sensor is installed inside the flocculation tank (2); The surface of the working platform (1) is provided with a flocculant mixing box (19), and a stirring assembly is provided inside the flocculant mixing box (19); a metering pump (14) is installed on the side of the flocculant mixing box (19), and the two sides of the outer side of the metering pump (14) are respectively connected to a flocculant extraction pipe (13) and an infusion main pipe (8); the outer side of the infusion main pipe (8) is connected to a plurality of infusion auxiliary pipes (7); the inside of the flocculant mixing box (19) is connected to a tap water inlet pipe (9), and a control valve (15) is installed on the surface of the tap water inlet pipe (9); An air compressor (3) is arranged on the surface of the working platform (1), and a gas supply main pipe (4) is connected to the outside of the air compressor (3), and a plurality of gas supply auxiliary pipes (5) are connected to the outside of the gas supply main pipe (4), and a gas diffuser (6) is installed at one end of the gas supply auxiliary pipe (5) away from the gas supply main pipe (4); A self-priming pump (12) is provided on the surface of the working platform (1), and a supernatant extraction pipe (11) is connected to the outside of the self-priming pump (12).

2. The integrated kitchen wastewater liquid carbon source preparation device according to claim 1, characterized in that: The end of the flocculant extraction pipe (13) away from the metering pump (14) is arranged at the inner bottom of the flocculant mixing box (19), the end of the infusion auxiliary pipe (7) away from the infusion main pipe (8) is arranged at the inner top of the flocculation tank (2), the gas diffuser (6) is arranged inside the flocculation tank (2), and the end of the supernatant extraction pipe (11) away from the self-priming pump (12) is arranged inside the flocculation tank (2).

3. The integrated kitchen wastewater liquid carbon source preparation device according to claim 2, characterized in that: The supernatant extraction pipe (11) is a telescopic pipe, and a sight glass (10) is provided on the side of the flocculation tank (2) near the supernatant extraction pipe (11).

4. The integrated kitchen wastewater liquid carbon source preparation device according to claim 1, characterized in that: The stirring assembly comprises: a stirring motor (16) mounted on the surface of a flocculant mixing box (19), and a rotating rod (17) is mounted on the output end of the stirring motor (16), and a stirring blade (18) is mounted on the surface of the rotating rod (17).

5. The integrated kitchen wastewater liquid carbon source preparation device according to claim 1, characterized in that: An intelligent display screen is installed on the outside of the flocculation tank (2), and the intelligent display screen is electrically connected to the temperature sensor.

6. The integrated kitchen wastewater liquid carbon source preparation device according to claim 1, characterized in that: The cooling pipeline is provided with an injection port and a discharge port, and both the injection port and the discharge port are located outside the flocculation tank (2).

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