Aquaculture tail water treatment method

Abstract

The invention relates to the field of aquaculture tail water treatment, and discloses an aquaculture tail water treatment method, which comprises the following steps: S1, tail water detection, S2, standing treatment, S3, tail water disinfection, S4, sampling test, S5, tail water monitoring, and S6, natural discharge. Before the aquaculture tail water is treated, a worker uses a test tube for the tail water and then detects the tail water by using an ultrasonic sensor, so that main components in the tail water can be checked, and relative treatment can be conveniently carried out according to main residues in the tail water; a worker prepares a coagulant disinfectant and activated sludge and prepares the content of the coagulant disinfectant and the content of the activated sludge according to main residues in the tail water, so that the tail water treatment quality can be improved, and after the tail water is filtered, the disinfection equipment is debugged and tested, so that the tail water treatment efficiency is improved. The effect of the disinfection equipment is ensured, and then a disinfectant is added into the tail water.

Description

Technical Field

[0001] The invention relates to the field of aquaculture tail water treatment, in particular to an aquaculture tail water treatment method. Background Art

[0002] Aquaculture tailwater treatment technologies include physical treatment, chemical treatment, and biological treatment. The treatment process usually includes ecological ditches, sedimentation tanks, filter dams, aeration tanks, biological purification tanks, and clean water tanks. The total area of tailwater treatment facilities is usually 6%-10% of the total aquaculture area. Typical models include the contiguous area treatment of aquaculture tailwater in Zhejiang Province, the "flow trough + rice-fish farming" wastewater recycling and tailwater treatment in the Ningxia Hui Autonomous Region, the "container + ecological pond" tailwater ecological treatment in Guangdong Province, and the fish-vegetable symbiotic aquaculture tailwater ecological treatment in Chongqing City. Therefore, "the original tailwater treatment was simple, took a long time, and had poor results", which is specifically manifested in the following aspects:

[0003] (1) Before treating the tail water, treatment agents cannot be added based on the high content of harmful substances in the tail water, thereby reducing the quality of tail water treatment; (2) When disinfecting the tail water, since the tail water contains a variety of microorganisms and bacteria, a single disinfectant cannot effectively disinfect the tail water, thereby reducing the quality of tail water disinfection; (3) After treating the tail water, the purified tail water is not regularly tested and directly discharged. Direct discharge without complete purification will cause pollution to the natural environment, thereby reducing the environmental friendliness of the tail water treatment. Summary of the Invention

[0004] The object of the present invention is to provide a method for treating aquaculture tail water, so as to solve the problems raised in the above-mentioned background technology: (1) before treating the tail water, treatment agents cannot be added according to the high content of harmful substances in the tail water, thereby reducing the quality of tail water treatment; (2) when disinfecting the tail water, since the tail water contains a variety of microorganisms and bacteria, a single disinfectant cannot effectively disinfect the tail water, thereby reducing the quality of tail water disinfection; (3) after treating the tail water, the purified tail water is not regularly tested and directly discharged. Direct discharge without complete purification will cause pollution to the natural environment, thereby reducing the environmental friendliness of the tail water treatment.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for treating aquaculture tail water, the method comprising the following steps:

[0006] S1. Tail water detection

[0007] (1. Sampling of tail water: test tube sampling, (2. Testing of tail water composition: ① using sensor, ② using pH meter, (3. Preparing materials: ① coagulant, ② disinfectant, ③ activated sludge;

[0008] S2. Static treatment

[0009] (1. Input materials, ① add activated sludge, ② add coagulant, ③ start reaction precipitation, (2. Filter, ① filter, ② membrane filtration technology, (3. Clean the filter;

[0010] S3. Tailwater disinfection

[0011] (1. Test disinfection equipment, test run disinfection equipment and instruments, (2. Add disinfectants, ① chlorine dioxide disinfection, ② ozone disinfection, ③ ultraviolet disinfection, (3. Maintain equipment, ① clean disinfection equipment, ② repair cleaning equipment;

[0012] S4. Sampling test

[0013] (1. Tail water sampling: use a sampling tube to sample the tail water; (2. Chemical testing: ① pH test, ② electrode method, ③ TDS test pen test; (3. Check the data: ① does not meet the standards, continue to repeat the purification; ② meets the standards, discharge the tail water;

[0014] S5. Tailwater monitoring

[0015] (1. Discharge buffer pool, ① cleaning buffer pool, ② tailwater discharge buffer pool, (2. Buffer pool monitoring, ① real-time detection of tailwater parameters in the buffer pool, ② recording changes in tailwater parameters, ③ discharge of tailwater;

[0016] S6, natural discharge

[0017] (1. Select multiple natural ponds, (2. Prepare equipment, ① Prepare water pipes, ② Prepare water pumps, ③ Test water pumps, (3. Start discharge, (4. Regularly monitor, the test cycle is once every 30 days.

[0018] Preferably, the coagulant is composed of polyaluminium chloride, aluminium sulfate, a coagulant aid and aluminium oxide in a ratio of 1:1.5:1:2.

[0019] Preferably, the disinfectant consists of sodium hypochlorite, chlorine dioxide and ozone in a ratio of 1:1:1.

[0020] Preferably, the ultraviolet disinfector uses the calculation formula F=Q / (A*P*S), where F is the number of lamps, Q is the number of target bacteria, A is the sterilization rate factor, P is the power of each lamp, and S is the ultraviolet radiation time.

[0021] Preferably, the water pump flow formula is: Q=Pη / 2.73H, where Q is the flow rate, P is the shaft power, η is the efficiency of the pump, and H is the head.

[0022] Preferably, the calculation formula for the membrane area required for the membrane filtration technology is: S=V / (L*H), where S is the membrane area, V is the feed liquid permeation volume, L is the membrane flux, and H is the process time.

[0023] Preferably, the sensor detection is ultrasonic sensor detection, which uses sound wave media to perform non-contact and wear-free detection of the object to be detected. The ultrasonic sensor can detect transparent and colored objects, metal and non-metal objects, solids, liquids, and powdered substances.

[0024] Preferably, the TDS is translated into Chinese as total dissolved solids, also known as total salt content, and the measurement unit is milligrams per liter (mg / L), which indicates how many milligrams of total dissolved solids are dissolved in 1 liter of water, as well as the total amount of ions in 1 liter of water.

[0025] Preferably, the TDS formula is: TDS=[Ca+Mg+Na+K]+[HCO3+S04+C].

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention allows the staff to use a test tube to test the tail water before treating the aquaculture tail water, and then use an ultrasonic sensor to detect the tail water, so as to check the main components in the tail water, and can conveniently carry out relative treatment according to the main residues in the tail water. The staff prepares the coagulant disinfectant and activated sludge, and prepares the content of the coagulant disinfectant and activated sludge according to the main residues in the tail water, thereby improving the quality of tail water treatment.

[0028] 2. The present invention debugs and tests the disinfection equipment after filtering the tail water to ensure the effectiveness of the disinfection equipment, then adds disinfectant to the tail water, first chemically disinfects the tail water through chlorine dioxide disinfection, then performs a secondary disinfection on the tail water through ozone disinfection, and finally disinfects the tail water through an ultraviolet sterilizer, thereby improving the quality of tail water disinfection through multiple disinfections and facilitating the subsequent discharge of the tail water.

[0029] 3. The present invention discharges the tail water into the buffer tank, cleans the buffer tank before discharging the tail water into the buffer tank, reduces the impact of the uncleaned buffer tank on the tail water monitoring, and then uses the monitoring instrument to detect the tail water in real time, which can detect the changes in pH and acidity and alkalinity in the tail water at any time, and then uses the computer to detect and record the data changes in real time, which is convenient for the staff to check. Finally, when the tail water meets the discharge standards, it is discharged to the natural environment, thereby improving the environmental friendliness of the tail water treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flow chart of the aquaculture tail water treatment method of the present invention;

[0031] Figure 2 This is a logic code diagram of the operation part of the ultraviolet disinfector in the present invention;

[0032] Figure 3 This is the logic code diagram of the debugging part of the ultraviolet sterilizer in the present invention. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] Example 1:

[0035] See also Figure 1-Figure 3 , a method for treating aquaculture tail water, the management method of which comprises the following steps:

[0036] S1. Tail water detection

[0037] (1. Tail water sampling, test tube sampling, (2. Detection of tail water components, ① detection using sensors, ② pH meter detection, (3. Preparation of materials, ① coagulant, ② disinfectant, ③ activated sludge. Before treating aquaculture tail water, the staff used a test tube to sample the tail water, and then used an ultrasonic sensor to detect the tail water. The main components in the tail water can be checked, and it is convenient to perform relative treatment based on the main residues in the tail water. The staff prepared the coagulant, disinfectant and activated sludge, and prepared the content of coagulant, disinfectant and activated sludge based on the main residues in the tail water, thereby improving the quality of tail water treatment;

[0038] S2. Static treatment

[0039] (1. Input materials, ① add activated sludge, ② add coagulant, ③ start reaction precipitation, (2. Filter, ① filter mesh filtration, ② membrane filtration technology, (3. Clean the filter mesh. After the tail water is tested, the staff will bury the activated sludge in the breeding pond, and then let it settle and stand. The staff will add coagulant to the pool, and then the light strip coagulant will react with the suspended matter to coagulate and precipitate. The suspended matter after the reaction will be filtered through the filter mesh, and then the membrane filtration technology will be used to filter the microorganisms and fine impurities in the tail water, thereby improving the quality of tail water filtration treatment. After the tail water is treated, the filter mesh will be cleaned regularly to ensure the quality of the filter mesh in filtration of the tail water;

[0040] S3. Tailwater disinfection

[0041] (1. Test the disinfection equipment, test run the disinfection equipment and instruments, (2. Add disinfectants, ① chlorine dioxide disinfection, ② ozone disinfection, ③ ultraviolet disinfection, (3. Maintain the equipment, ① clean the disinfection equipment, ② repair the cleaning equipment, after filtering the tail water, debug and test the disinfection equipment to ensure the effectiveness of the disinfection equipment, and then add disinfectants to the tail water, first perform chemical disinfection on the tail water through chlorine dioxide disinfection, then perform secondary disinfection on the tail water through ozone disinfection, and finally disinfect the tail water through ultraviolet disinfection, thereby improving the quality of tail water disinfection through multiple disinfections, and facilitating the subsequent discharge of the tail water;

[0042] S4. Sampling test

[0043] (1. Tail water sampling: use a sampling tube to sample the tail water; (2. Chemical testing: ① PH test, ② electrode method, ③ TDS test pen test; (3. Verify data: ① if it does not meet the standard, continue to repeat the purification; ② if it meets the standard, discharge the tail water. After filtering and disinfecting the tail water, sample the tail water, then perform chemical testing on the treated tail water sample, then use PH testing to perform PH testing on the tail water sample to detect whether the PH value in the tail water sample meets the national standard, and then use the electrode method and TDS test pen to perform solution ion testing on the tail water, so as to ensure that the tail water purification treatment meets the discharge standard and improve the accuracy and stability of tail water treatment;

[0044] S5. Tailwater monitoring

[0045] (1. Discharge buffer pool, ① clean the buffer pool, ② tail water discharge buffer pool, (2. Buffer pool monitoring, ① perform real-time parameter detection on the buffer pool tail water, ② record the change of tail water parameters, ③ discharge the tail water, discharge the tail water into the buffer pool, and clean the buffer pool before discharging the tail water into the buffer pool to reduce the impact of the uncleaned buffer pool on the tail water monitoring. Then, the tail water is tested in real time by the monitoring instrument, and the changes in pH and acidity and alkalinity in the tail water can be detected at any time. Then, the computer is used to perform real-time detection and recording of data changes, which is convenient for staff to view. Finally, when the tail water meets the discharge standards, it is discharged to the natural environment, thereby improving the environmental protection of the tail water treatment.

[0046] S6, natural discharge

[0047] (1. Select multiple natural ponds, (2. Prepare equipment, ① prepare water pipes, ② prepare water pumps, ③ test water pumps, (3. Start discharge, (4. Regular monitoring, the test cycle is once every 30 days. Before discharging the tail water, select natural ponds in advance, and discharge the treated tail water through the coordinated use of water pumps and water pipes. The staff will conduct sampling and testing on the discharge ponds every 30 days to ensure the rationality of tail water treatment.

[0048] In this embodiment, the coagulant is composed of polyaluminium chloride, aluminium sulfate, a coagulant aid and aluminium oxide in a ratio of 1:1.5:1:2.

[0049] In this embodiment, the disinfectant is composed of sodium hypochlorite, chlorine dioxide and ozone in a ratio of 1:1:1.

[0050] In this embodiment, the calculation formula of the ultraviolet disinfector is F=Q / (A*P*S), where F is the number of lamps, Q is the number of target bacteria, A is the sterilization rate factor, P is the power of each lamp, and S is the ultraviolet radiation time.

[0051] In this embodiment, the water pump flow rate formula is: Q=Pη / 2.73H, where Q is the flow rate, P is the shaft power, η is the efficiency of the pump, and H is the head.

[0052] In this embodiment, the calculation formula for the membrane area required for membrane filtration technology is: S=V / (L*H), where S is the membrane area, V is the feed liquid permeation volume, L is the membrane flux, and H is the process time.

[0053] In this embodiment, the sensor detection is ultrasonic sensor detection. The ultrasonic sensor uses sound wave media to perform non-contact and wear-free detection of the object to be detected. The ultrasonic sensor can detect transparent and colored objects, metal and non-metal objects, solids, liquids, and powdery substances.

[0054] In this embodiment, TDS is translated into Chinese as total dissolved solids, also known as total salt content, and the measurement unit is milligrams per liter (mg / L). It indicates how many milligrams of total dissolved solids are dissolved in 1 liter of water, and the total amount of ions in 1 liter of water.

[0055] In this embodiment: TDS formula: TDS=[Ca+Mg+Na+K]+[HCO3+S04+C].

[0056] Example 2:

[0057] Different from the first embodiment, the aquaculture tailwater treatment method of this embodiment includes the following steps:

[0058] S1. Tail water detection

[0059] 1. Prepare materials: ① coagulant, ② disinfectant, ③ activated sludge. Before treating aquaculture tail water, the staff will prepare the coagulant, disinfectant and activated sludge, and prepare the content of coagulant, disinfectant and activated sludge according to the main residues in the tail water.

[0060] S2. Static treatment

[0061] (1. Input materials, ① add activated sludge, ② add coagulant, ③ start reaction precipitation, (2. Filter, ① filter with filter mesh, ② membrane filtration technology, (3. Clean the filter mesh. After testing the tail water, the staff will bury the activated sludge in the breeding pond, and then let it settle and stand. The staff will add coagulant to the pool, and then the light strip coagulant will react with the suspended matter to coagulate and precipitate. The suspended matter after the reaction will be filtered through the filter mesh, and then the membrane filtration technology will be used to filter the microorganisms and fine impurities in the tail water, thereby improving the quality of tail water filtration treatment. After the tail water is treated, the filter mesh will be cleaned regularly to ensure the quality of the filter mesh in filtration of the tail water.

[0062] S3. Tailwater disinfection

[0063] 1. Test the disinfection equipment and test the disinfection equipment and instruments. 2. Add disinfectants. ① Chlorine dioxide disinfection: After filtering the tail water, debug and test the disinfection equipment to ensure the effectiveness of the disinfection equipment. Then add disinfectants to the tail water and first perform chemical disinfection on the tail water through chlorine dioxide disinfection.

[0064] S4. Sampling test

[0065] 1. Tail water sampling: use a sampling tube to sample the tail water; 2. Chemical testing; 3. Check the data; ① If it does not meet the standards, continue to repeat the purification; ② If it meets the standards, discharge the tail water. After filtering and disinfecting the tail water, sample the tail water, and then conduct chemical testing on the treated tail water sample. Then use the pH test to test whether the pH value of the tail water sample meets the national standard.

[0066] S5, natural discharge

[0067] 1. Select multiple natural ponds. 2. Prepare equipment: ① Prepare water pipes. ② Prepare water pumps. ③ Test water pumps. 3. Start discharge. Before discharging tail water, select natural ponds in advance and use water pumps and water pipes to discharge the treated tail water.

[0068] In summary: Compared with Example 2, before treating the aquaculture tail water, the staff of this embodiment 1 uses a test tube to sample the tail water, and then uses an ultrasonic sensor to detect the tail water, which can check the main components in the tail water, and can conveniently carry out relative treatment according to the main residues in the tail water. The staff prepares the coagulant disinfectant and activated sludge, and prepares the content of coagulant disinfectant and activated sludge according to the main residues in the tail water, thereby improving the quality of tail water treatment.

[0069] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0070] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for treating aquaculture tail water, characterized by: The processing method includes the following steps: S1. Tail water detection (1. Sampling of tail water: test tube sampling, (2. Testing of tail water composition: ① using sensor, ② using pH meter, (3. Preparing materials: ① coagulant, ② disinfectant, ③ activated sludge; S2. Static treatment (1. Input materials, ① add activated sludge, ② add coagulant, ③ start reaction precipitation, (2. Filter, ① filter, ② membrane filtration technology, (3. Clean the filter; S3. Tailwater disinfection (1. Test disinfection equipment, test run disinfection equipment and instruments, (2. Add disinfectants, ① chlorine dioxide disinfection, ② ozone disinfection, ③ ultraviolet disinfection, (3. Maintain equipment, ① clean disinfection equipment, ② repair cleaning equipment; S4. Sampling test (1. Tail water sampling: use a sampling tube to sample the tail water; (2. Chemical testing: ① pH test, ② electrode method, ③ TDS test pen test; (3. Check the data: ① does not meet the standards, continue to repeat the purification; ② meets the standards, discharge the tail water; S5. Tailwater monitoring (1. Discharge buffer pool, ① cleaning buffer pool, ② tailwater discharge buffer pool, (2. Buffer pool monitoring, ① real-time detection of tailwater parameters in the buffer pool, ② recording changes in tailwater parameters, ③ discharge of tailwater; S6, natural discharge (1. Select multiple natural ponds, (2. Prepare equipment, ① Prepare water pipes, ② Prepare water pumps, ③ Test water pumps, (3. Start discharge, (4. Regularly monitor, the test cycle is once every 30 days.

2. The method for treating aquaculture tail water according to claim 1, wherein: The coagulant is composed of polyaluminium chloride, aluminium sulfate, a coagulant aid and aluminium oxide in a ratio of 1:1.5:1:

2.

3. The method for treating aquaculture tail water according to claim 1, wherein: The disinfectant consists of sodium hypochlorite, chlorine dioxide and ozone in a ratio of 1:1:

1.

4. The method for treating aquaculture tail water according to claim 1, wherein: The calculation formula of the ultraviolet disinfector is F=Q / (A*P*S), where F is the number of lamps, Q is the number of target bacteria, A is the sterilization rate factor, P is the power of each lamp, and S is the ultraviolet radiation time.

5. The method for treating aquaculture tail water according to claim 1, wherein: The water pump flow formula is: Q=Pη / 2.73H, where Q is the flow rate, P is the shaft power, η is the efficiency of the pump, and H is the head.

6. The method for treating aquaculture tail water according to claim 1, wherein: The calculation formula for the membrane area required for the membrane filtration technology is: S=V / (L*H), where S is the membrane area, V is the feed liquid permeation volume, L is the membrane flux, and H is the process time.

7. The method for treating aquaculture tail water according to claim 1, wherein: The sensor detection is ultrasonic sensor detection, which uses sound wave media to perform non-contact and wear-free detection of the object to be detected. The ultrasonic sensor can detect transparent and colored objects, metal and non-metal objects, solids, liquids, and powdery substances.

8. The method for treating aquaculture tail water according to claim 1, wherein: The Chinese translation of TDS is total dissolved solids, also known as total salt content, and the measurement unit is milligrams per liter (mg / L). It indicates how many milligrams of total dissolved solids are dissolved in 1 liter of water, as well as the total amount of ions in 1 liter of water.

9. The method for treating aquaculture tail water according to claim 8, wherein: The TDS formula: TDS=[Ca+Mg+Na+K]+[HCO3+S04+C].

Images