Double-filter-pool type seasoning high-concentration organic wastewater treatment system

Abstract

The utility model discloses a kind of double-filter-pool type condiment high concentration organic wastewater treatment systems, including first filter tank, first filter tank is equipped with upper splitter plate, lower convergent plate forms filler area, inner wall is equipped with heat exchange coil pipe, side wall is equipped with multiple pipelines such as oxygen inlet pipe, backwashing pipe, gas outlet pipe;First filter tank side wall is provided with temperature sensor and dissolved oxygen sensor connection controller.Upper splitter plate top surface conical surface structure and the first water pass hole of special aperture design, realize wastewater uniform dispersion, and lower convergent plate is convenient to collect wastewater after processing.Wastewater after processing enters buffer tank through wastewater outlet pipe, and it can be refluxed and processed again if it does not meet the standard.The double-filter-pool type condiment high concentration organic wastewater treatment system disclosed in the utility model can be used for organic wastewater generated in the production process of soy sauce, citrus cooking wine and citrus fruit vinegar, realizes uniform water flow distribution to improve the adsorption of filler and the degradation effect of microorganism, and optimizes secondary treatment process through double-filter-pool structure, reduces treatment cost and improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of high-concentration organic wastewater treatment technology, specifically a dual-filter type high-concentration organic wastewater treatment system for condiments. Background Technology

[0002] In the condiment production sector, the production processes of products such as soy sauce, citrus cooking wine, citrus fruit vinegar, and pickles generate a large amount of industrial wastewater. Soy sauce, in particular, is produced using a medium-salt, low-temperature brewing process, involving raw material processing, multi-strain koji preparation, brine addition, and medium-salt, low-temperature fermentation. Citrus cooking wine and citrus fruit vinegar are made from fresh citrus fruits through processes such as peeling and juicing, debittering, alcoholic fermentation, acetic acid fermentation, aging, and sterilization. These production stages not only lead to a significant increase in wastewater discharge but also result in wastewater characterized by high organic matter concentration, high color, and extremely high ammonia nitrogen levels, classifying it as typical difficult-to-treat organic wastewater.

[0003] If such high-concentration organic wastewater is discharged directly, it will cause serious harm to the ecological environment: water bodies will become unbalanced due to eutrophication, threatening the survival of aquatic organisms; the high color of the wastewater will reduce the light transmittance of the water body, hindering the photosynthesis of aquatic plants; the malodorous gases produced during fermentation will pollute the air, breed pathogenic microorganisms, and affect the quality of the surrounding environment; at the same time, the wastewater will change the chemical composition and physical properties of the soil after seeping into the soil, destroying the soil ecological balance, and its degree of harm is far greater than that of ordinary domestic wastewater.

[0004] Currently, aerobic and anaerobic biological treatment processes are commonly used to treat wastewater from condiment factories. However, existing treatment technologies have significant shortcomings in practical applications. For example, in aerobic treatment, traditional aeration devices are often located at the bottom of the tank. When the volume of water to be treated is large, this can easily lead to the sedimentation of bacterial sludge at the bottom, resulting in insufficient contact between microorganisms and wastewater, thus reducing the degradation efficiency of organic matter and ammonia nitrogen. Simultaneously, uneven water flow distribution within the treatment system prevents the packing or reaction zone from functioning effectively, further impacting the purification effect. Furthermore, there is a lack of precise control over temperature and dissolved oxygen. Microorganisms in condiment factory wastewater (especially functional bacteria involved in ammonia nitrogen degradation and organic matter decomposition) are sensitive to environmental conditions; fluctuations in temperature and dissolved oxygen significantly reduce their activity, leading to unstable treatment results. When the effluent quality fails to meet standards and requires secondary treatment, mixing the substandard wastewater with the initial raw water for reprocessing can result in low secondary treatment efficiency due to the accumulation of high-concentration pollutants, and the repeated treatment process significantly increases treatment costs. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a dual-filter filtration system for condiment production wastewater. This system is designed for difficult-to-treat organic wastewater with high organic matter concentration, high color, and high ammonia nitrogen generated during the production of soy sauce, citrus cooking wine, and citrus fruit vinegar. It achieves uniform water flow to improve the adsorption and microbial degradation effects of the packing material. At the same time, the dual-filter structure optimizes the secondary treatment process, reducing treatment costs and improving efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a dual-filter type high-concentration organic wastewater treatment system for condiments, including a first filter, an upper diverter plate is provided near the upper part of the first filter, a lower concentrator plate is provided near the bottom of the first filter, and a packing area is formed between the upper diverter plate and the lower concentrator plate. The inner wall of the first filter tank is provided with a heat exchange coil. One end of the heat exchange coil is the heat exchange medium inlet pipe, which is located near the bottom of the side wall of the first filter tank. The other end of the heat exchange coil is the heat exchange medium outlet pipe, which is located near the top of the side wall of the first filter tank. The first filter tank is also provided with an oxygen inlet pipe and a backwash pipe near the bottom of the side wall, and an air outlet pipe and a cleaning water drain pipe near the top of the side wall.

[0007] In a preferred embodiment, a temperature sensor and a dissolved oxygen sensor are provided on the side wall of the first filter tank. The temperature sensor and the dissolved oxygen sensor are connected to a controller, which is connected to a control valve on the heat exchange medium inlet pipe and a control valve on the oxygen inlet pipe.

[0008] In a preferred embodiment, the top surface of the upper diversion plate is a conical surface, and the top surface of the upper diversion plate forms a downward slope from the center to the surrounding area. Multiple water guide grooves are provided on the top surface of the upper diversion plate, and multiple first water passage holes are provided at the bottom of the water guide grooves.

[0009] In a preferred embodiment, the diameter of the plurality of first water passage holes in a single water guide channel gradually increases from the center of the upper diversion plate to the outer edge of the upper diversion plate.

[0010] In a preferred embodiment, the top surface of the lower concentrator is a conical surface, and the top surface of the lower concentrator forms a downward slope from the periphery to the center. A second water passage hole is provided at the center of the lower concentrator.

[0011] In a preferred embodiment, a wastewater outlet pipe is provided on the lower part of the side wall of the first filter tank, a wastewater output pump is provided on the wastewater outlet pipe, the wastewater outlet pipe is connected to a buffer tank, a water quality testing mechanism is provided on the buffer tank, and a drain pipe is provided on the lower part of the side wall of the buffer tank. The drain pipe is equipped with a branch pipe, a return water pump is installed on the branch pipe, a fifth tee is provided at the connection between the branch pipe and the drain pipe, the branch pipe is connected to the wastewater inlet pipe, and a sixth tee is provided at the connection between the branch pipe and the wastewater inlet pipe.

[0012] In a preferred embodiment, a second filter bed is also included, which has the same structure as the first filter bed.

[0013] In a preferred embodiment, a branch pipe is provided on the wastewater inlet pipe, and a third tee is provided at the connection between the branch pipe and the wastewater inlet pipe, and the branch pipe is connected to the second filter tank; The oxygen inlet pipe is provided with a branch pipe, and a first tee is provided at the connection between the branch pipe and the oxygen inlet pipe. The branch pipe is connected to the second filter tank. The backwash pipe is provided with a branch pipe, and a second tee is provided at the connection between the branch pipe and the backwash pipe. The branch pipe is connected to the second filter tank. The wastewater outlet pipe is equipped with a branch pipe, and a fourth tee is provided at the connection between the branch pipe and the wastewater outlet pipe. The branch pipe is connected to the second filter tank.

[0014] The dual-filter type high-concentration organic wastewater treatment system for condiments provided by this utility model has the following beneficial effects by adopting the above-mentioned structure: (1) The design of the upper diversion plate makes the high-concentration seasoning production wastewater evenly distributed in the packing area, ensuring that the packing and wastewater are in full contact, and significantly improving the adsorption and degradation efficiency of pollutants such as organic matter, color, and ammonia nitrogen; (2) Precise control of temperature and dissolved oxygen ensures the activity of microorganisms in treating high-concentration organic wastewater, especially for functional bacteria such as ammonia nitrogen degrading bacteria, which steadily improves the denitrification and decolorization effects; (3) The dual-filter structure can flexibly cope with the fluctuations in the discharge of condiment production wastewater, avoid the surge in treatment load caused by the mixing of unqualified wastewater and raw water, and reduce the cost and energy consumption of secondary treatment of high-concentration wastewater. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a top view of the upper distributor plate of this utility model.

[0017] Figure 3 This is a cross-sectional view of the lower flow-gathering plate of this utility model.

[0018] In the diagram: First filter 1, Second filter 2, Upper diversion plate 3, Water guide channel 301, First water passage 302, Lower flow convergence plate 4, Conical surface 401, Second water passage 402, Heat exchange coil 5, Heat exchange medium inlet pipe 501, Heat exchange medium outlet pipe 502, Oxygen inlet pipe 6, Gas outlet pipe 7, Backwash pipe 8, Cleaning water drain pipe 9, Wastewater inlet pipe 10, First tee 11, Second tee 12, Third tee 13, Temperature sensor 14, Dissolved oxygen sensor 15, Controller 16, Wastewater outlet pipe 17, Wastewater output pump 18, Fourth tee 19, Buffer tank 20, Water quality testing mechanism 21, Drain pipe 22, Return water pipe 23, Fifth tee 24, Sixth tee 25, Return water pump 26. Detailed Implementation

[0019] like Figure 1-3 A dual-filter type high-concentration organic wastewater treatment system for condiments includes a first filter 1. An upper diversion plate 3 is provided near the upper part of the first filter 1, and a lower concentrating plate 4 is provided near the bottom of the first filter 1. A packing zone is formed between the upper diversion plate 3 and the lower concentrating plate 4. The packing zone is filled with adsorption packing such as activated carbon (which may be supplemented with carriers such as biological ceramic particles to enhance the adhesion of microorganisms). The inner wall of the first filter tank 1 is provided with a heat exchange coil 5. One end of the heat exchange coil 5 is a heat exchange medium inlet pipe 501, which is located near the bottom of the side wall of the first filter tank 1. The other end of the heat exchange coil 5 is a heat exchange medium outlet pipe 502, which is located near the top of the side wall of the first filter tank 1. The first filter tank 1 is also provided with an oxygen inlet pipe 6 and a backwash pipe 8 near the bottom of the side wall, and an air outlet pipe 7 and a cleaning water drain pipe 9 near the top of the side wall.

[0020] In a preferred embodiment, a temperature sensor 14 and a dissolved oxygen sensor 15 are provided on the side wall of the first filter tank 1. The temperature sensor 14 and the dissolved oxygen sensor 15 are connected to a controller 16. The controller 16 is connected to a control valve on the heat exchange medium inlet pipe 501 and a control valve on the oxygen inlet pipe 6.

[0021] In a preferred embodiment, the top surface of the upper diversion plate 3 is a conical surface, and the top surface of the upper diversion plate 3 forms a downward slope from the center to the surrounding area. The top surface of the upper diversion plate 3 is provided with multiple water guide grooves 301, and the bottom of the water guide grooves 301 is provided with multiple first water passage holes 302.

[0022] In a preferred embodiment, the diameter of the plurality of first water passage holes 302 within a single water guide channel 301 gradually increases from the center of the upper diversion plate 3 to the outer edge of the upper diversion plate 3.

[0023] In a preferred embodiment, the top surface of the lower concentrator plate 4 is a conical surface, and the top surface of the lower concentrator plate 4 slopes downward from the periphery to the center. A second water passage hole 402 is provided at the center of the lower concentrator plate 4.

[0024] In a preferred embodiment, a wastewater outlet pipe 17 is provided on the lower part of the side wall of the first filter tank 1, a wastewater output pump 18 is provided on the wastewater outlet pipe 17, the wastewater outlet pipe 17 is connected to the buffer tank 20, a water quality testing mechanism 21 is provided on the buffer tank 20, and a drain pipe 22 is provided on the lower part of the side wall of the buffer tank 20. The drain pipe 22 is provided with a branch pipe, and a return water pump 26 is provided on the branch pipe. A fifth tee 24 is provided at the connection between the branch pipe and the drain pipe 22. The branch pipe is connected to the wastewater inlet pipe 10 for introducing the condiment production wastewater to be treated. A sixth tee 25 is provided at the connection between the branch pipe and the wastewater inlet pipe 10.

[0025] In a preferred embodiment, a second filter 2 is also included, which has the same structure as the first filter 1.

[0026] In a preferred embodiment, a branch pipe is provided on the wastewater inlet pipe 10, and a third tee 13 is provided at the connection between the branch pipe and the wastewater inlet pipe 10. The branch pipe is connected to the second filter tank 2. The oxygen inlet pipe 6 is provided with a branch pipe, and a first tee 11 is provided at the connection between the branch pipe and the oxygen inlet pipe 6. The branch pipe is connected to the second filter tank 2. The backwash pipe 8 is provided with a branch pipe, and a second tee 12 is provided at the connection between the branch pipe and the backwash pipe 8. The branch pipe is connected to the second filter tank 2. A branch pipe is provided on the wastewater outlet pipe 17, and a fourth tee 19 is provided at the connection between the branch pipe and the wastewater outlet pipe 17. The branch pipe is connected to the second filter tank 2. This utility model discloses a dual-filter type high-concentration organic wastewater treatment system for condiments, which performs wastewater treatment operations as follows: The wastewater to be treated enters the first filter tank 1 through the wastewater inlet pipe 10. The wastewater first flows to the upper distribution plate 3. Since the top surface of the upper distribution plate 3 is conical and is equipped with a water guide groove 301 and first water passage holes 302, and the aperture of the multiple first water passage holes 302 in a single water guide groove 301 gradually increases from the center of the upper distribution plate 3 to the outer edge of the upper distribution plate 3, this allows the wastewater to be evenly dispersed and enter the packing zone through the first water passage holes 302. In the packing zone, the wastewater is in full contact with the activated carbon packing. The adsorption performance of the activated carbon and the biofilm formed by microorganisms on the surface of the packing work together to adsorb and degrade organic pollutants, heavy metal ions, etc. in the wastewater.

[0027] The treated wastewater flows downwards to the lower concentrator plate 4. The top surface of the lower concentrator plate 4 is conical, sloping downwards from the periphery to the center. A second water passage hole 402 is provided at the center. The treated wastewater is collected through the second water passage hole 402 and then discharged from the wastewater outlet pipe 17 at the lower side wall of the first filter tank 1. It is then transported to the buffer tank 20 by the wastewater output pump 18. In the buffer tank 20, the water quality testing mechanism 21 tests the water quality of the treated wastewater. If the test results meet the standards, the wastewater is discharged through the drain pipe 22. If the test results do not meet the standards, the return water pump 26 on the branch pipe of the drain pipe 22 is started, and part of the substandard wastewater is returned to the wastewater inlet pipe 10 through the branch pipe and re-enters the first filter tank 1 for treatment.

[0028] Among them, water quality testing institutions 21 include, but are not limited to: pH meters (such as portable pH meters and online pH monitors, which measure the acidity and alkalinity of wastewater through glass electrodes and reference electrodes to determine whether it is within the discharge standard range), COD rapid analyzers (measuring the content of organic matter in wastewater to reflect the degree of water pollution), BOD analyzers (measuring the amount of oxygen consumed during the decomposition of organic matter by microorganisms to assess the biodegradability of wastewater), TOC analyzers (directly measuring the total amount of organic carbon in wastewater, suitable for monitoring high-concentration organic wastewater), atomic absorption spectrometers (AAS) or inductively coupled plasma mass spectrometers (ICP-MS) or atomic fluorescence spectrometers (AFS) (AAS / ICP-MS is used for quantitative detection of heavy metal ions such as lead, cadmium, chromium, and mercury, AFS...). It is suitable for the detection of non-metallic elements such as arsenic and selenium, total nitrogen (phosphorus) analyzer (to measure the content of ammonia nitrogen, total nitrogen and total phosphorus in wastewater to prevent eutrophication of water bodies), volatile phenol analyzer (to detect volatile phenolic substances in petroleum and chemical wastewater) and cyanide analyzer (to measure the cyanide content in electroplating and gold mining wastewater).

[0029] Throughout the treatment process, temperature sensor 14 and dissolved oxygen sensor 15 on the sidewall of the first filter 1 monitor the temperature and dissolved oxygen concentration inside the filter in real time and transmit the monitoring data to controller 16. When temperature sensor 14 detects that the temperature inside the filter deviates from the suitable temperature range for microbial survival, controller 16 controls the control valve on the heat exchange medium inlet pipe 501 to adjust the flow rate of the heat exchange medium, heating or cooling the wastewater in the filter through the heat exchange coil 5 to restore the temperature to the suitable range. If dissolved oxygen sensor 15 detects insufficient dissolved oxygen concentration, controller 16 controls the control valve on the oxygen inlet pipe 6 to increase the oxygen intake, providing sufficient oxygen for the microorganisms, ensuring their activity, and thus ensuring the stable and efficient operation of the wastewater purification process.

[0030] After the filter has been running for a period of time, backwashing and cleaning are required. At this time, high-pressure water is connected to the backwash pipe 8, and the water flows through the backwash pipe 8 into the first filter 1, flushing the activated carbon filter media in the packing area and washing away pollutants and microbial metabolites from the surface of the filter media. The flushed wastewater, carrying impurities, is discharged from the filter through the cleaning water drain pipe 9. Simultaneously, if a second filter 2 is installed, since it has the same structure as the first filter 1 and is connected via branch pipes such as the oxygen inlet pipe 6, backwash pipe 8, and wastewater outlet pipe 17, the two filters can be flexibly arranged to operate and be cleaned alternately according to actual treatment needs. This ensures the continuity of wastewater treatment, effectively extends the service life of the filters, and improves the operational stability of the equipment. If a second filter 2 exists, its wastewater purification, parameter control, and cleaning and maintenance processes are basically the same as those of the first filter 1. The two work together through various connecting pipelines, and the operating mode can be flexibly adjusted according to the actual wastewater treatment scale and working conditions to improve the applicability and treatment efficiency of the equipment.

Claims

1. A dual-filter type high-concentration organic wastewater treatment system for condiments, comprising a first filter (1), characterized in that: The first filter tank (1) is provided with an upper flow divider plate (3) near the upper part and a lower flow gatherer plate (4) near the bottom. A packing area is formed between the upper flow divider plate (3) and the lower flow gatherer plate (4). The inner wall of the first filter (1) is provided with a heat exchange coil (5). One end of the heat exchange coil (5) is a heat exchange medium inlet pipe (501), which is located near the bottom of the side wall of the first filter (1). The other end of the heat exchange coil (5) is a heat exchange medium outlet pipe (502), which is located near the top of the side wall of the first filter (1). The first filter (1) is also provided with an oxygen inlet pipe (6) and a backwash pipe (8) near the bottom of the side wall, and an air outlet pipe (7) and a cleaning water drain pipe (9) near the top of the side wall.

2. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 1, characterized in that: The first filter (1) is equipped with a temperature sensor (14) and a dissolved oxygen sensor (15) on its side wall. The temperature sensor (14) and the dissolved oxygen sensor (15) are connected to the controller (16). The controller (16) is connected to the control valve on the heat exchange medium inlet pipe (501) and the control valve on the oxygen inlet pipe (6).

3. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 1, characterized in that: The top surface of the upper diversion plate (3) is a cone surface. The top surface of the upper diversion plate (3) forms a downward slope from the center to the surrounding area. Multiple water guide grooves (301) are provided on the top surface of the upper diversion plate (3). Multiple first water passage holes (302) are provided at the bottom of the water guide grooves (301).

4. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 3, characterized in that: The diameter of the multiple first water passage holes (302) in a single water guide channel (301) gradually increases from the center of the upper diversion plate (3) to the outer edge of the upper diversion plate (3).

5. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 1, characterized in that: The top surface of the lower concentrator (4) is a cone, and the top surface of the lower concentrator (4) slopes downward from the periphery to the center. A second water passage hole (402) is provided at the center of the lower concentrator (4).

6. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 1, characterized in that: The first filter (1) has a wastewater outlet pipe (17) at the lower part of its side wall, a wastewater output pump (18) on the wastewater outlet pipe (17), the wastewater outlet pipe (17) is connected to the buffer tank (20), the buffer tank (20) is equipped with a water quality testing mechanism (21), and the buffer tank (20) has a drain pipe (22) at the lower part of its side wall. The drain pipe (22) is provided with a branch pipe, and a return water pump (26) is provided on the branch pipe. A fifth tee (24) is provided at the connection between the branch pipe and the drain pipe (22). The branch pipe is connected to the wastewater inlet pipe (10). A sixth tee (25) is provided at the connection between the branch pipe and the wastewater inlet pipe (10).

7. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 6, characterized in that: It also includes a second filter (2), which has the same structure as the first filter (1).

8. The dual-filter type high-concentration organic wastewater treatment system for condiments according to claim 7, characterized in that: A branch pipe is provided on the wastewater inlet pipe (10), and a third tee (13) is provided at the connection between the branch pipe and the wastewater inlet pipe (10). The branch pipe is connected to the second filter tank (2). The oxygen inlet pipe (6) is provided with a branch pipe, and a first tee (11) is provided at the connection between the branch pipe and the oxygen inlet pipe (6). The branch pipe is connected to the second filter (2). The backwash pipe (8) is provided with a branch pipe, and a second tee (12) is provided at the connection between the branch pipe and the backwash pipe (8). The branch pipe is connected to the second filter tank (2). The wastewater outlet pipe (17) is provided with a branch pipe, and a fourth tee (19) is provided at the connection between the branch pipe and the wastewater outlet pipe (17). The branch pipe is connected to the second filter tank (2).

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