CN115304210B - Intelligent control system for innocent treatment of aquaculture wastewater and control method thereof - Google Patents
Intelligent control system for innocent treatment of aquaculture wastewater and control method thereof Download PDFInfo
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- CN115304210B CN115304210B CN202210745384.4A CN202210745384A CN115304210B CN 115304210 B CN115304210 B CN 115304210B CN 202210745384 A CN202210745384 A CN 202210745384A CN 115304210 B CN115304210 B CN 115304210B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 116
- 238000009360 aquaculture Methods 0.000 title claims abstract description 33
- 244000144974 aquaculture Species 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 34
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 24
- 231100000719 pollutant Toxicity 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 89
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 64
- 230000007246 mechanism Effects 0.000 claims description 47
- 230000018044 dehydration Effects 0.000 claims description 34
- 238000006297 dehydration reaction Methods 0.000 claims description 34
- 238000005189 flocculation Methods 0.000 claims description 34
- 230000016615 flocculation Effects 0.000 claims description 34
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims description 32
- 229910052698 phosphorus Inorganic materials 0.000 claims description 32
- 239000011574 phosphorus Substances 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 27
- 229910001385 heavy metal Inorganic materials 0.000 claims description 26
- 238000013016 damping Methods 0.000 claims description 25
- 239000011553 magnetic fluid Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 25
- 239000010865 sewage Substances 0.000 claims description 24
- 238000001179 sorption measurement Methods 0.000 claims description 20
- 238000004659 sterilization and disinfection Methods 0.000 claims description 18
- 239000012535 impurity Substances 0.000 claims description 16
- 230000020477 pH reduction Effects 0.000 claims description 15
- 150000003568 thioethers Chemical class 0.000 claims description 14
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 12
- 239000013049 sediment Substances 0.000 claims description 9
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 8
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000008213 purified water Substances 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000011295 pitch Substances 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 9
- 208000005156 Dehydration Diseases 0.000 description 23
- 238000010586 diagram Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 210000003811 finger Anatomy 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5209—Regulation methods for flocculation or precipitation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Physical Water Treatments (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention belongs to the technical field of intelligent control of innocent treatment of aquaculture wastewater. Intelligent control system for innocent treatment of aquaculture wastewater, comprising: the device comprises an air-floating chassis module, a solid-liquid separation module, a film-hanging denitrification and dephosphorization module and a soluble pollutant treatment module which are arranged on the air-floating chassis module; the film-forming denitrification and dephosphorization module is respectively connected with the solid-liquid separation module and the soluble pollutant treatment module; the four modules are respectively connected with the main control module. The invention also discloses a control method of the control system. The invention is used for solving the technical problem that the wastewater treatment device cannot realize intelligent control.
Description
Technical Field
The invention belongs to the technical field of intelligent control of innocent treatment of aquaculture wastewater, and particularly relates to an intelligent control system and a control method for the innocent treatment of aquaculture wastewater.
Background
In the aquaculture process, phenomena such as intensive stocking, excessive baiting, illegal medication, arbitrary discharge of aquaculture water and the like are very common, serious damage is caused to a water area ecological system, and especially the wastewater rich in nitrogen and phosphorus generated in the aquaculture process is unfavorable for the growth of the aquatic products and can cause water eutrophication, and an intelligent control system for harmless treatment of aquaculture wastewater is required to control a wastewater treatment device so as to finish intelligent, efficient and harmless treatment of the wastewater.
The existing control system can only simply control the start and stop of the treatment device, and cannot adjust the state of the device according to the wastewater treatment condition, so that the water quality after wastewater treatment does not reach the standard, and the problems of harmful substances and the like still exist. Therefore, it is necessary to invent an intelligent control system and a control method for the harmless treatment of the aquaculture wastewater, so as to realize the intelligent control of the wastewater treatment device and complete the efficient harmless treatment of the wastewater.
Disclosure of Invention
The invention provides an intelligent control system for innocent treatment of aquaculture wastewater, which is used for solving the technical problem that an intelligent control cannot be realized by a wastewater treatment device.
In order to solve the technical problems, the invention adopts the following technical scheme that the intelligent control system for innocent treatment of aquaculture wastewater comprises:
the device comprises an air-floating chassis module, a solid-liquid separation module, a film-hanging denitrification and dephosphorization module and a soluble pollutant treatment module which are arranged on the air-floating chassis module; the film-forming denitrification and dephosphorization module is respectively connected with the solid-liquid separation module and the soluble pollutant treatment module;
The air-floating chassis module comprises a chassis and a damping air bag arranged at the bottom of the chassis, and a vibration sensor is arranged on the chassis; the damping air bag is provided with a damping air bag electromagnetic valve and a gas pressure sensor; the vibration sensor is used for acquiring the vibration intensity of the chassis; the gas pressure sensor is used for acquiring the gas pressure in the vibration reduction air bag;
The solid-liquid separation module comprises a solid-liquid separation device, and a bubble generator, a filter screen, an electromagnetic filter residue cleaner, a turbidity sensor and a first flow rate sensor which are arranged in the solid-liquid separation device; the turbidity sensor is used for acquiring the turbidity of the wastewater in the solid-liquid separation module; the first flow rate sensor is used for acquiring the flow rate of the water body in front of and behind the filter screen; the electromagnetic filter residue cleaner is used for flushing and cleaning the filter holes of the filter screen;
The film-forming denitrification and dephosphorization module comprises a film-forming denitrification and dephosphorization device, an ultrasonic cleaning reaction film device, a film-forming module electromagnetic valve, a nitrogen-phosphorus sensor and a second flow sensor which are arranged in the film-forming denitrification and dephosphorization device; the nitrogen and phosphorus sensor acquires the nitrogen and phosphorus content of the wastewater; the second flow sensor is used for obtaining the flow velocity of the wastewater in the film-forming denitrification and dephosphorization module; the membrane hanging module electromagnetic valve is used for adjusting the flow rate of wastewater and increasing the reaction time of wastewater and a biological membrane;
The soluble pollutant treatment module comprises a magnetic fluid flocculation device and a dehydration processor which are connected; the magnetic fluid flocculation device is internally provided with a heavy metal detection sensor and a hydrogen sulfide sensor, wherein the heavy metal detection sensor is used for acquiring the heavy metal content in the wastewater of the magnetic fluid flocculation device; the hydrogen sulfide sensor is used for obtaining the sulfide content in the wastewater of the magnetic fluid flocculation device; the discharge port of the dehydrator is provided with a water content sensor for acquiring the water content of the flocculated sediment dehydrated by the spiral shell stacking dehydration processor;
The water-containing sensor main control module is respectively connected with the vibration sensor, the damping air bag electromagnetic valve, the gas pressure sensor, the turbidity sensor, the bubble generator, the first flow rate sensor, the electromagnetic filter residue cleaner, the ultrasonic cleaning reaction film device, the film hanging module electromagnetic valve, the nitrogen-phosphorus sensor, the second flow rate sensor, the motor of the magnetic fluid flocculation device, the motor of the dehydration processor, the metal detection sensor, the hydrogen sulfide sensor and the water-containing sensor.
The intelligent control system for harmless treatment of aquaculture wastewater comprises an air-floating type chassis module, a ternary integrated solid-liquid separation module, a film-hanging nitrogen and phosphorus removal module and a soluble pollutant treatment module, wherein the solid-liquid separation module, the film-hanging nitrogen and phosphorus removal module and the soluble pollutant treatment module are arranged on the air-floating type chassis module, the ternary integrated module is connected with the film-hanging nitrogen and phosphorus removal module, and the nitrogen and phosphorus removal module is connected with the soluble pollutant treatment module. The invention can control the running state of the wastewater treatment device according to the water quality feedback information, and realize intelligent, efficient and harmless treatment of wastewater.
The technical scheme of the invention is further improved, the solid-liquid separation device comprises a box body and a spiral conveying mechanism arranged in the box body, and the filter screen is arranged at one side of a discharge hole of the box body; the feeding end of the spiral conveying mechanism is positioned at the bottom of the water tank and at the water inlet side of the filter screen, and the discharging end of the spiral conveying mechanism is the top of the water tank.
According to the technical scheme, the water inlet is formed in the bottom of the box body, the water inlet pipe is arranged on the water inlet, and the first flow rate sensor and the bubble generator are arranged on the water inlet pipe.
The technical scheme of the invention is further improved, and the electromagnetic filter residue cleaner is arranged on the box body.
The technical scheme of the invention is further improved, and the film-forming denitrification and dephosphorization module comprises an acidification tank, a biological film reaction adsorption tank and a disinfection tank which are overlapped from inside to outside;
A sewage inlet pipe is arranged on the acidification tank; the acidification tank is connected with the biological film reaction adsorption tank through a first sewage conveying pipe arranged at the bottom of the acidification tank; the biological film reaction adsorption tank is connected with the disinfection tank through a second sewage conveying pipe arranged at the bottom of the biological film reaction adsorption tank; the disinfection tank is provided with a purified water outlet pipe.
The technical scheme of the invention is further improved, and an ultrasonic cleaning reaction membrane device is arranged on the biological membrane reaction adsorption tank.
The technical scheme of the invention is further improved, and the disinfection tank is provided with a dosing device.
The technical scheme of the invention is further improved, and the magnetic fluid flocculation device comprises a shell, and a stirring mechanism and a flocculation sedimentation mechanism which are arranged in the shell;
The stirring mechanism comprises a stirring shaft, blades arranged on the stirring shaft and a stirring shaft driving mechanism, and the stirring shaft driving mechanism is positioned above the shell;
the flocculation sedimentation mechanism comprises a magnet group and an electrode group which are arranged on the shell, wherein the magnet group and the motor group are arranged in a cross shape; the magnet group comprises an S pole and an N pole which are oppositely arranged, and the electrode group comprises a positive pole and a negative pole which are oppositely arranged; the positive electrode and the negative electrode are both connected with a power supply mechanism.
The technical scheme of the invention is further improved, and the dehydration treatment device is connected with the magnetic fluid flocculation device through a conveying device;
The dehydration treatment device is obliquely arranged, two ends of the dehydration treatment device are respectively provided with a discharge hole and a water outlet, and the discharge hole is higher than the water outlet; the dehydration treatment device comprises a shell, a spiral conveying mechanism and a spiral conveying mechanism driving mechanism, wherein the spiral conveying mechanism and the spiral conveying mechanism driving mechanism are arranged in the shell; the filter screen is circumferentially arranged on the inner side of the shell.
The second object of the invention is to provide a control method of an intelligent control system for innocuous treatment of aquaculture wastewater, comprising the following steps:
(1) The air-floating chassis module obtains the vibration intensity of the chassis through the vibration sensor, compares the measured vibration intensity with the allowable vibration intensity, and if the measured vibration intensity is larger than the allowable vibration intensity, the main control module adjusts the gas quantity in the vibration-damping air bag through the electromagnetic valve of the vibration-damping air bag; acquiring the gas pressure in the vibration reduction air bag through a gas pressure sensor, wherein the gas pressure exceeds or is lower than a rated gas pressure range, and starting an alarm device by a main control module;
(2) The solid-liquid separation module obtains the turbidity of the wastewater through the turbidity sensor, and if the turbidity does not meet the requirement, the main control module adjusts the generation quantity and frequency of bubbles of the bubble generator, so that insoluble impurities in the wastewater float on the water surface, and a filter screen is used for removing impurities; meanwhile, the water flow rate before and after the filter screen is obtained through the first flow rate sensor, if the water flow rate is too slow, the filter holes are blocked, and the main control module starts the electromagnetic filter residue cleaner to wash and clean the filter holes of the filter screen; after the turbidity of the wastewater detected by the turbidity sensor meets the requirement, discharging the wastewater into a film-forming denitrification and dephosphorization module;
(3) The film-forming denitrification and dephosphorization module obtains the nitrogen and phosphorus content of the wastewater through a nitrogen and phosphorus sensor, obtains the flow rate of the wastewater through a second flow rate sensor, and adjusts the flow rate of the wastewater through a solenoid valve of the film-forming module if the nitrogen and phosphorus content of the wastewater does not reach a critical value, so that the reaction time of the wastewater and the biological film is increased, and the nitrogen and phosphorus content in the wastewater reaches the standard; the nitrogen and phosphorus content of the wastewater reaches a critical value, and the wastewater is discharged into a soluble pollutant treatment module;
(4) The soluble pollutant treatment module obtains the contents of heavy metals and sulfides in the wastewater through the heavy metal detection sensor and the hydrogen sulfide sensor, and if the contents of the heavy metals and the sulfides in the wastewater do not reach a critical value, the main control module stirs the wastewater added with the flocculant by adjusting the rotating speed of a stirrer in the magnetic fluid flocculation device, so that the sedimentation of the heavy metals and the sulfides is realized; meanwhile, the water content of the flocculated sediment dehydrated by the spiral shell stacking dehydration processor is obtained by the water content sensor, and if the water content does not reach a dehydration critical value, the main control module dehydrates the sediment by adjusting the rotating speed of a screw in the spiral shell stacking dehydration processor and changing different diameters and screw pitches; and if the contents of heavy metals and sulfides in the wastewater reach the critical value, finishing the harmless treatment of the aquaculture wastewater.
According to the invention, the state parameters such as the rotating speed, the angle and the like of the treatment device can be adjusted according to the content of harmful substances in the wastewater; the air-floating chassis module detects the vibration intensity of the chassis and controls the vibration reduction air bag electromagnetic valve to realize the vibration reduction of the whole wastewater treatment device; the ternary integrated solid-liquid separation module detects insoluble impurities in the wastewater, controls the bubble generator to suspend the impurities, and filters the impurities by the filter screen to remove the impurities; the membrane-hanging denitrification and dephosphorization module detects the content of nitrogen and phosphorus in the wastewater, controls a membrane-hanging module electromagnetic valve to adjust the flow rate of the wastewater, and filters and treats nitrogen and phosphorus elements in the wastewater by using a biological membrane; the soluble pollutant treatment module detects the content of heavy metals and sulfides in the wastewater, controls the magnetic fluid flocculation device to flocculate and precipitate the heavy metals and the sulfides, and controls the spiral shell stack dehydration processor to dehydrate and remove the precipitate. Compared with the traditional control method, the method has clear logic, can adjust the state parameters of the device according to the content of harmful substances in the wastewater, and improves the intelligent, efficient and harmless treatment quality of the wastewater.
Drawings
FIG. 1 is a schematic diagram of an intelligent control system for innocent treatment of aquaculture wastewater according to the present invention;
FIG. 2 is a control schematic diagram of the intelligent control system for the innocent treatment of the aquaculture wastewater according to the invention.
FIG. 3 is a schematic view of the structure of the air-floating chassis module of the present invention;
FIG. 4 is a schematic diagram of the structure of the solid-liquid separation module of the present invention;
FIG. 5 is a schematic diagram of the structure of the membrane-suspended denitrification and dephosphorization module of the invention;
FIG. 6 is a schematic diagram of the structure of a soluble contaminant treatment module of the present invention;
FIG. 7 is a top view of the magnetic fluid flocculation apparatus of the present invention;
FIG. 8 is a schematic diagram of the operation of the magnetic fluid flocculation apparatus of the present invention.
Detailed Description
As shown in figures 1-8, the intelligent control system for the harmless treatment of the aquaculture wastewater comprises an air-floating type chassis module 2, a solid-liquid separation module 4, a film-forming denitrification and dephosphorization module 3, a soluble pollutant treatment module 1 and a main control module 5.
The solid-liquid separation module, the film-forming denitrification and dephosphorization module and the soluble pollutant treatment module are arranged on the air-floating chassis module; the film-forming denitrification and dephosphorization module is respectively connected with the solid-liquid separation module and the soluble pollutant treatment module.
The air-floating chassis module comprises a chassis and a damping air bag arranged at the bottom of the chassis, and a vibration sensor 211 (not shown in the figure) is arranged on the chassis; the shock-absorbing air bag is provided with a shock-absorbing air bag electromagnetic valve 210 (not shown in the figure) and a gas pressure sensor 212 (not shown in the figure); the vibration sensor is used for acquiring the vibration intensity of the chassis; and the gas pressure sensor is used for acquiring the gas pressure in the vibration reduction air bag.
Specifically, as shown in fig. 3, the air-floating chassis module is composed of a box 201, a cab 202, a guide rail 203, a slider 204, wheels 205, a hydraulic lifting device 206, a damping airbag 207, a bearing plate 208 and a chassis 209. The box 201 is internally provided with a solid-liquid separation module, a film-forming denitrification and dephosphorization module, a soluble pollutant treatment module and a main control module
The cab 202 is fixedly connected with the chassis 209, the guide rail 203 is fixedly arranged outside the cab 202, the sliding block 204 is fixedly connected with the box 201, the sliding block 204 is in sliding connection with the guide rail 203, the bearing plate 208 is fixedly connected with the chassis 209, the wheels 205 are arranged below the chassis 209, the bottom end of the hydraulic lifting device 206 is fixedly connected with the bearing plate 208 through bolts, the upper end of the hydraulic lifting device 206 is fixedly connected with the lower end of the damping air bag 207 through bolts, and the upper end of the damping air bag 207 is fixedly connected with the box 201; the bearing plate 208 is fixedly connected with the chassis 209, and both are made of metal profiles, so that the weight of the platform is reduced; the lower end of the hydraulic lifting device 206 is fixedly connected with the bearing plate 208, the upper end of the hydraulic lifting device is fixedly connected with the damping air bag 207, meanwhile, the box 201 is fixedly connected with the damping air bag 207, and the hydraulic lifting device 206 can drive the box 201 to ascend and descend so as to flexibly adjust the height of the box 201; the four hydraulic lifting devices 206 are fixedly connected with the four damping air bags 207, the box 201 has a good anti-seismic effect in the lifting process, and meanwhile, the four damping air bags 7 are beneficial to reducing vibration of the vehicle-mounted platform in the driving process.
The specific working principle is as follows: the lifting devices are started, the four hydraulic lifting devices 206 work simultaneously, and the damping air bags 207 are driven to ascend or descend, so that the box 201 is integrally ascended or descended, the height of the box 201 can be flexibly adjusted according to the specific height requirement of goods, and the four hydraulic lifting devices 206 can realize heavy lifting; the connection mode of the damping air bag 207 and the hydraulic lifting device 206 can effectively ensure that the goods in the box 201 are stable in the lifting process, and can also ensure that the vehicle does not jolt in the running process, so that the goods are protected.
The solid-liquid separation module comprises a solid-liquid separation device, and a bubble generator, a filter screen, an electromagnetic filter residue cleaner, a turbidity sensor 417 and a first flow rate sensor 418 which are arranged in the solid-liquid separation device; the turbidity sensor is used for acquiring the turbidity of the wastewater in the solid-liquid separation module; the first flow rate sensor is used for acquiring the flow rate of the water body before and after the filter screen; the electromagnetic filter residue cleaner is used for flushing and cleaning the filter holes of the filter screen.
The solid-liquid separation device comprises a box body and a spiral conveying mechanism arranged in the box body, and the filter screen is arranged at one side of a discharge hole of the box body; the feeding end of the spiral conveying mechanism is positioned at the bottom of the water tank and at the water inlet side of the filter screen, and the discharging end of the spiral conveying mechanism is positioned at the top of the water tank.
In a further embodiment, the bottom of the tank body is provided with a water inlet, the water inlet is provided with a water inlet pipe, and the water inlet pipe is provided with a first flow rate sensor and a bubble generator. An electromagnetic filter residue cleaner is arranged on the box body.
Specifically, as shown in fig. 4, a high-efficiency solid-liquid separation device, which is composed of a wastewater inlet 401, a bubble generator 402, a water tank 403, a first frame 404, a filter screen 405, a motor 406, a motor seat 407, a screw conveying shaft 408, a blade 409, a screw conveying casing 410, a waste residue outlet 411, a waste residue collecting frame 412, a secondary filtering inlet 413, a second frame 414, an electromagnetic filter residue cleaner 415 and an outlet 416; one end of the bubble generator 402 is installed on the wastewater inlet 401, the other end of the bubble generator 402 is installed at the left lower side of the water tank 403, the water tank 403 is fixedly arranged on the ground, the filter screen 405 is fixedly installed on the inner wall of the water tank 3 through the first frame 404, the lower end of the spiral conveying shaft 408 is connected with the filter screen 405, the upper end of the spiral conveying shaft 408 is connected with the output shaft of the motor 406 through a coupler, the motor 406 is fixedly installed on the motor seat 407 through bolts, the motor seat 407 is fixedly installed at the top end of the spiral conveying shell 410, the blade 409 is welded on the outer part of the spiral conveying shaft 408, the spiral conveying shell 410 is installed on the outer side of the blade 409, the waste residue outlet 411 is arranged at the lower side of the upper end of the spiral conveying shell 410, the waste residue collecting frame 412 is fixedly installed above the water tank 403, the secondary filtering inlet 413 is arranged at the right lower side of the water tank and is connected with the electromagnetic residue cleaner 415, the electromagnetic residue cleaner 415 is fixedly installed on the ground, the electromagnetic residue cleaner 415 is fixedly installed on the second frame 414, the electromagnetic residue cleaner is fixedly installed on the second frame 414, the blade is welded on the right side of the electromagnetic residue cleaner 415. Turbidity sensor 417 is provided on the water outlet side of the filter screen, not shown. The first flow sensor 418 is disposed on the inlet pipe of the inlet.
The working principle of the high-efficiency solid-liquid separation device is as follows: the bubble generator 402 introduces micro bubbles into the wastewater, and the bubbles are attached to impurities, so that the whole density of the bubbles is reduced and then the bubbles float on the water surface; the filter screen 405 filters impurities; the motor 406 drives the screw conveying shaft 408 to rotate so as to drive the blade 409 to rotate, impurities are conveyed upwards through the blade 409 and discharged from the waste residue outlet 411, and fall into the waste residue collecting frame 412; the wastewater after the primary filtration enters the electromagnetic filter residue cleaner 415 through the secondary filtration inlet 413, the secondary filtration is performed through the electromagnetic filter residue cleaner 415, and the wastewater after the secondary filtration is discharged through the outlet 416.
The film-forming nitrogen and phosphorus removal module comprises a film-forming nitrogen and phosphorus removal device, an ultrasonic cleaning reaction film device, a film-forming module electromagnetic valve, a nitrogen and phosphorus sensor 317 and a second flow sensor 318 which are arranged in the film-forming nitrogen and phosphorus removal device; acquiring the nitrogen and phosphorus content of the wastewater by a nitrogen and phosphorus sensor; the second flow sensor is used for obtaining the flow rate of the wastewater in the film-forming denitrification and dephosphorization module; the membrane hanging module electromagnetic valve is used for adjusting the flow velocity of the wastewater and increasing the reaction time of the wastewater and the biological membrane. Nitrogen-phosphorus sensor 317
The film-forming denitrification and dephosphorization module comprises an acidification tank, a biological film reaction adsorption tank and a disinfection tank which are overlapped from inside to outside; a sewage inlet pipe is arranged on the acidification tank; the acidification tank is connected with the biological film reaction adsorption tank through a first sewage conveying pipe arranged at the bottom of the acidification tank; the biological film reaction adsorption tank is connected with the disinfection tank through a second sewage conveying pipe arranged at the bottom of the biological film reaction adsorption tank; the disinfection tank is provided with a purified water outlet pipe. The disinfection tank is provided with a dosing device. An ultrasonic cleaning reaction membrane device is arranged on the biological membrane reaction adsorption tank.
Specifically, as shown in fig. 5, the film-forming denitrification and dephosphorization module comprises an acidification tank 301, a moving bed biological film reaction adsorption tank 302, a disinfection tank 303, an upper cover 304, an overhaul cover 305, a sewage inlet pipe 306, a first electromagnetic valve 307, a moving bed biological film 308, a second electromagnetic valve 309, a medicine feeder 310, a medicine feeding pump 311, a blower 312, an exhaust pipe 313, a first sewage conveying pipe 314, a second sewage conveying pipe 315 and a purified water outlet pipe 316. A nitrogen-phosphorus sensor 317 is disposed within the disinfection tank 303. A second flow sensor 318 is provided on the wastewater inlet pipe 306.
The working principle of the film-forming denitrification and dephosphorization module is as follows: sewage enters the acidification tank 301 through the sewage inlet pipe 306 to complete the first denitrification and dephosphorization treatment of the sewage; the first electromagnetic valve 307 is opened, sewage enters the moving bed biomembrane reaction adsorption tank 302, the moving bed biomembrane 308 adsorbs the acidified sewage, the blower 312 exhausts the vibrating moving bed biomembrane 308 through the exhaust pipe 313, the adsorption treatment efficiency is improved, and the second denitrification and dephosphorization treatment of the sewage is completed; the second electromagnetic valve 309 is opened, sewage enters the disinfection tank 303, the medicine liquid in the medicine feeder 310 is conveyed to the disinfection tank 303 by the medicine feeding pump 311 for disinfection, and the disinfection treatment of the sewage is completed; the on-off valve of the purified water outlet pipe 316 is opened, and the purified water flows out of the self-cleaning type biomembrane denitrification and dephosphorization device; the on-off valve of the first sewage conveying pipe 314 is opened, the sludge at the bottom of the acidification tank 301 is conveyed to the moving bed biological film reaction adsorption tank 302 through the first sewage conveying pipe 314 under the action of gravity, the on-off valve of the second sewage conveying pipe 315 is opened, and the sludge at the bottom of the moving bed biological film reaction adsorption tank 302 is discharged to the self-cleaning biological film denitrification and dephosphorization device through the second sewage conveying pipe 315 under the action of gravity, so that the cleaning of the sludge is completed.
The soluble pollutant treatment module comprises a magnetic fluid flocculation device and a dehydration processor which are connected; the magnetic fluid flocculation device is internally provided with a heavy metal detection sensor 1001 and a hydrogen sulfide sensor 1002, wherein the heavy metal detection sensor is used for acquiring the heavy metal content 1003 in the wastewater of the magnetic fluid flocculation device; the hydrogen sulfide sensor is used for obtaining the sulfide content in the wastewater of the magnetic fluid flocculation device; the discharge port of the dehydrator is provided with a water content sensor for acquiring the water content of the flocculated sediment dehydrated by the spiral shell stacking dehydration processor.
As shown in fig. 6, 7 and 8, the soluble pollutant treatment module 1 comprises a stirring flocculation precipitation device, a conveying device and a dehydration treatment device.
The stirring flocculation precipitation device comprises a shell 10, and a stirring mechanism 11 and a flocculation precipitation mechanism 12 which are arranged in the shell.
The shell 10 is provided with a feed inlet 101 and a discharge outlet 102. A filter screen is arranged on the discharge port 102.
The stirring mechanism 11 comprises a stirring shaft 110, a blade 111 arranged on the stirring shaft, and a stirring shaft driving mechanism 112, wherein the stirring shaft driving mechanism 112 is positioned above the shell 10. The stirring shaft drive mechanism 112 is a motor.
As shown in fig. 2, flocculation sedimentation mechanism 12 comprises a magnet group 121 and an electrode group 122 which are arranged on a shell, wherein magnet group 121 and electrode group 122 are arranged in a cross shape. The magnet assembly includes oppositely disposed S-poles 1211, N-poles 1212. The electrode group 122 includes a positive electrode 1221 and a negative electrode 1222 disposed opposite to each other; the positive electrode 1221 and the negative electrode 1222 are both connected to a power supply mechanism. The positive electrode 1221 and the negative electrode 1222 2 are connected to the positive electrode and the negative electrode of the dc power supply respectively by wires, and preferably, the positive electrode is disposed on the front side of the housing, and the negative electrode is disposed on the rear side of the housing.
As shown in fig. 7 and 8, the treated muddy water contains a large amount of ions and conductive impurities, has certain conductivity, flows between the magnet groups 121 and contacts the electrode groups 122, the muddy water is penetrated by magnetic force lines and has current flowing through the magnetic force lines, the magnetic force lines are from left to right, the current direction is from front to back, the left palm is flattened according to the left hand rule, four fingers are gathered together and form an angle of 90 degrees with the thumb, the palm center face faces the N pole, the four fingers point to the current direction, the thumb is the electromagnetic force direction, namely the electromagnetic force direction is downward, and ions, charged particles, conductive impurities and charged flocculates in the muddy water sink to the bottom of the shell under the driving of electromagnetic force.
The conveying device comprises a conveying pump, a feeding pipe 21 and a discharging pipe 22 which are arranged on the conveying pump. A control valve 23 is arranged on the feeding pipe or the discharging pipe.
The dehydration treatment device is connected with the stirring flocculation precipitation device through a conveying device. The dewatering device is arranged obliquely. The dehydration treatment device comprises a housing 30, a screw conveyor mechanism (including a screw conveyor shaft 31 and a screw blade 37) provided in the housing, and a screw conveyor mechanism driving mechanism 32.
The filter screen 33 is circumferentially arranged on the inner side of the housing 30. Two ends of the dehydration treatment device are respectively provided with a discharge port 34 and a water outlet 35, and the discharge port 34 is higher than the water outlet 35.
The dehydration treatment device further includes a base 36, the base mounting surface is an inclined surface, and the dehydration treatment device is disposed on the base mounting surface which is inclined. The screw conveyor driving mechanism 33 is located on the discharge port side.
As shown in fig. 6, 7 and 8, the working principle of the wastewater treatment device for aquaculture is as follows: the muddy water added with the flocculant enters the mixer shell 10 through the mixer feed inlet 101, the mixing motor 112 mixes the muddy water added with the flocculant through the mixing blades 111, the muddy water enters between the magnet groups 121 and contacts with the electrode groups 122, the current in the electrode groups 122 flows through the muddy water, ions, charged particles, conductive impurities and charged flocculates in the muddy water can be subjected to the electromagnetic force action of the magnet groups 121, and the directions of the electromagnetic forces are adjusted by adjusting the magnetic poles of the magnet groups 121 or the polarities of the electrode groups 122, so that rapid sinking is realized; the flocculated and settled muddy water enters the dewatering processor shell 30 through the feed pipe 21, the control valve 23 and the discharge pipe 22, the solids in the muddy water are conveyed through the screw conveying shaft 310 and discharged from the discharge port 34, and the liquid in the muddy water is discharged from the discharge port 35 through the dewatering processor filter screen 33.
The main control module 5 is preferably a single chip microcomputer. The main control module is respectively connected with a vibration sensor, a damping air bag electromagnetic valve, a gas pressure sensor, a turbidity sensor, a bubble generator, a first flow rate sensor, an electromagnetic filter residue cleaner, an ultrasonic cleaning reaction film device, a film hanging module electromagnetic valve, a nitrogen-phosphorus sensor, a second flow rate sensor, a motor of a magnetic fluid flocculation device, a motor of a dehydration processor, a metal detection sensor, a hydrogen sulfide sensor and a water-containing sensor.
Example 2
As shown in fig. 2, the control method of the intelligent control system for the harmless treatment of the aquaculture wastewater comprises the following steps:
(1) The air-floating chassis module obtains the vibration intensity of the chassis through the vibration sensor, compares the measured vibration intensity with the allowable vibration intensity, and if the measured vibration intensity is larger than the allowable vibration intensity, the main control module adjusts the gas quantity in the vibration-damping air bag through the electromagnetic valve of the vibration-damping air bag; acquiring the gas pressure in the vibration reduction air bag through a gas pressure sensor, wherein the gas pressure exceeds or is lower than a rated gas pressure range, and starting an alarm device by a main control module;
(2) The solid-liquid separation module obtains the turbidity of the wastewater through the turbidity sensor, and if the turbidity does not meet the requirement, the main control module adjusts the generation quantity and frequency of bubbles of the bubble generator, so that insoluble impurities in the wastewater float on the water surface, and a filter screen is used for removing impurities; meanwhile, the water flow rate before and after the filter screen is obtained through the first flow rate sensor, if the water flow rate is too slow, the filter holes are blocked, and the main control module starts the electromagnetic filter residue cleaner to wash and clean the filter holes of the filter screen; after the turbidity of the wastewater detected by the turbidity sensor meets the requirement, discharging the wastewater into a film-forming denitrification and dephosphorization module;
(3) The film-forming denitrification and dephosphorization module obtains the nitrogen and phosphorus content of the wastewater through a nitrogen and phosphorus sensor, obtains the flow rate of the wastewater through a second flow rate sensor, and adjusts the flow rate of the wastewater through a solenoid valve of the film-forming module if the nitrogen and phosphorus content of the wastewater does not reach a critical value, so that the reaction time of the wastewater and the biological film is increased, and the nitrogen and phosphorus content in the wastewater reaches the standard; the nitrogen and phosphorus content of the wastewater reaches a critical value, and the wastewater is discharged into a soluble pollutant treatment module;
(4) The soluble pollutant treatment module obtains the contents of heavy metals and sulfides in the wastewater through the heavy metal detection sensor and the hydrogen sulfide sensor, and if the contents of the heavy metals and the sulfides in the wastewater do not reach a critical value, the main control module stirs the wastewater added with the flocculant by adjusting the rotating speed of a stirrer in the magnetic fluid flocculation device, so that the sedimentation of the heavy metals and the sulfides is realized; meanwhile, the water content of the flocculated sediment dehydrated by the spiral shell stacking dehydration processor is obtained by the water content sensor, and if the water content does not reach a dehydration critical value, the main control module dehydrates the sediment by adjusting the rotating speed of a screw in the spiral shell stacking dehydration processor and changing different diameters and screw pitches; and if the contents of heavy metals and sulfides in the wastewater reach the critical value, finishing the harmless treatment of the aquaculture wastewater.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (10)
1. Intelligent control system for innocent treatment of aquaculture wastewater, characterized by comprising:
the device comprises an air-floating chassis module, a solid-liquid separation module, a film-hanging denitrification and dephosphorization module and a soluble pollutant treatment module which are arranged on the air-floating chassis module; the film-forming denitrification and dephosphorization module is respectively connected with the solid-liquid separation module and the soluble pollutant treatment module;
The air-floating chassis module comprises a chassis and a damping air bag arranged at the bottom of the chassis, and a vibration sensor is arranged on the chassis; the damping air bag is provided with a damping air bag electromagnetic valve and a gas pressure sensor; the vibration sensor is used for acquiring the vibration intensity of the chassis; the gas pressure sensor is used for acquiring the gas pressure in the vibration reduction air bag;
The solid-liquid separation module comprises a solid-liquid separation device, and a bubble generator, a filter screen, an electromagnetic filter residue cleaner, a turbidity sensor and a first flow rate sensor which are arranged in the solid-liquid separation device; the turbidity sensor is used for acquiring the turbidity of the wastewater in the solid-liquid separation module; the first flow rate sensor is used for acquiring the flow rate of the water body in front of and behind the filter screen; the electromagnetic filter residue cleaner is used for flushing and cleaning the filter holes of the filter screen;
The film-forming denitrification and dephosphorization module comprises a film-forming denitrification and dephosphorization device, an ultrasonic cleaning reaction film device, a film-forming module electromagnetic valve, a nitrogen-phosphorus sensor and a second flow sensor which are arranged in the film-forming denitrification and dephosphorization device; the nitrogen and phosphorus sensor acquires the nitrogen and phosphorus content of the wastewater; the second flow sensor is used for obtaining the flow velocity of the wastewater in the film-forming denitrification and dephosphorization module; the membrane hanging module electromagnetic valve is used for adjusting the flow rate of wastewater and increasing the reaction time of wastewater and a biological membrane;
The soluble pollutant treatment module comprises a magnetic fluid flocculation device and a dehydration processor which are connected; the magnetic fluid flocculation device is internally provided with a heavy metal detection sensor and a hydrogen sulfide sensor, wherein the heavy metal detection sensor is used for acquiring the heavy metal content in the wastewater of the magnetic fluid flocculation device; the hydrogen sulfide sensor is used for obtaining the sulfide content in the wastewater of the magnetic fluid flocculation device; a water content sensor is arranged at a discharge port of the dehydration processor and is used for acquiring the water content of flocculated sediment dehydrated by the spiral shell stacking dehydration processor;
The water-containing sensor main control module is respectively connected with the vibration sensor, the damping air bag electromagnetic valve, the gas pressure sensor, the turbidity sensor, the bubble generator, the first flow rate sensor, the electromagnetic filter residue cleaner, the ultrasonic cleaning reaction film device, the film hanging module electromagnetic valve, the nitrogen-phosphorus sensor, the second flow rate sensor, the motor of the magnetic fluid flocculation device, the motor of the dehydration processor, the metal detection sensor, the hydrogen sulfide sensor and the water-containing sensor.
2. The intelligent control system for harmless treatment of aquaculture wastewater according to claim 1, wherein the solid-liquid separation device comprises a box body and a spiral conveying mechanism arranged in the box body, and the filter screen is arranged at one side of a discharge hole of the box body; the feeding end of the spiral conveying mechanism is positioned at the bottom of the water tank and at the water inlet side of the filter screen, and the discharging end of the spiral conveying mechanism is the top of the water tank.
3. The intelligent control system for harmless treatment of aquaculture wastewater according to claim 2, wherein a water inlet is formed in the bottom of the tank, a water inlet pipe is arranged on the water inlet, and a first flow rate sensor and a bubble generator are arranged on the water inlet pipe.
4. The intelligent control system for innocent treatment of aquaculture wastewater according to claim 3, wherein an electromagnetic filter residue cleaner is arranged on the tank.
5. The intelligent control system for innocent treatment of aquaculture wastewater according to claim 1, wherein the film-forming denitrification and dephosphorization module comprises an acidification tank, a biological film reaction adsorption tank and a disinfection tank which are overlapped from inside to outside;
A sewage inlet pipe is arranged on the acidification tank; the acidification tank is connected with the biological film reaction adsorption tank through a first sewage conveying pipe arranged at the bottom of the acidification tank; the biological film reaction adsorption tank is connected with the disinfection tank through a second sewage conveying pipe arranged at the bottom of the biological film reaction adsorption tank; the disinfection tank is provided with a purified water outlet pipe.
6. The intelligent control system for innocent treatment of aquaculture wastewater according to claim 5, wherein the biofilm reaction adsorption tank is provided with an ultrasonic cleaning reaction membrane device.
7. The intelligent control system for innocent treatment of aquaculture wastewater according to claim 6, wherein a dosing device is arranged on the disinfection tank.
8. The intelligent control system for innocent treatment of aquaculture wastewater according to claim 1, wherein the magnetic fluid flocculation device comprises a shell, and a stirring mechanism and a flocculation sedimentation mechanism which are arranged in the shell;
The stirring mechanism comprises a stirring shaft, blades arranged on the stirring shaft and a stirring shaft driving mechanism, and the stirring shaft driving mechanism is positioned above the shell;
the flocculation sedimentation mechanism comprises a magnet group and an electrode group which are arranged on the shell, wherein the magnet group and the motor group are arranged in a cross shape; the magnet group comprises an S pole and an N pole which are oppositely arranged, and the electrode group comprises a positive pole and a negative pole which are oppositely arranged; the positive electrode and the negative electrode are both connected with a power supply mechanism.
9. The intelligent control system for innocent treatment of aquaculture wastewater according to claim 8, wherein the dehydration processor is connected with the magnetic fluid flocculation device through a conveying device;
The dehydration processor is obliquely arranged, two ends of the dehydration processor are respectively provided with a discharge hole and a water outlet, and the discharge hole is higher than the water outlet; the dehydration processor comprises a shell, a spiral conveying mechanism and a spiral conveying mechanism driving mechanism, wherein the spiral conveying mechanism and the spiral conveying mechanism driving mechanism are arranged in the shell; the filter screen is circumferentially arranged on the inner side of the shell.
10. The control method of the intelligent control system for the harmless treatment of the aquaculture wastewater is characterized by comprising the following steps of:
(1) The air-floating chassis module obtains the vibration intensity of the chassis through the vibration sensor, compares the measured vibration intensity with the allowable vibration intensity, and if the measured vibration intensity is larger than the allowable vibration intensity, the main control module adjusts the gas quantity in the vibration-damping air bag through the electromagnetic valve of the vibration-damping air bag; acquiring the gas pressure in the vibration reduction air bag through a gas pressure sensor, wherein the gas pressure exceeds or is lower than a rated gas pressure range, and starting an alarm device by a main control module;
(2) The solid-liquid separation module obtains the turbidity of the wastewater through the turbidity sensor, and if the turbidity does not meet the requirement, the main control module adjusts the generation quantity and frequency of bubbles of the bubble generator, so that insoluble impurities in the wastewater float on the water surface, and a filter screen is used for removing impurities; meanwhile, the water flow rate before and after the filter screen is obtained through the first flow rate sensor, if the water flow rate is too slow, the filter holes are blocked, and the main control module starts the electromagnetic filter residue cleaner to wash and clean the filter holes of the filter screen; after the turbidity of the wastewater detected by the turbidity sensor meets the requirement, discharging the wastewater into a film-forming denitrification and dephosphorization module;
(3) The film-forming denitrification and dephosphorization module obtains the nitrogen and phosphorus content of the wastewater through a nitrogen and phosphorus sensor, obtains the flow rate of the wastewater through a second flow rate sensor, and adjusts the flow rate of the wastewater through a solenoid valve of the film-forming module if the nitrogen and phosphorus content of the wastewater does not reach a critical value, so that the reaction time of the wastewater and the biological film is increased, and the nitrogen and phosphorus content in the wastewater reaches the standard; the nitrogen and phosphorus content of the wastewater reaches a critical value, and the wastewater is discharged into a soluble pollutant treatment module;
(4) The soluble pollutant treatment module obtains the contents of heavy metals and sulfides in the wastewater through the heavy metal detection sensor and the hydrogen sulfide sensor, and if the contents of the heavy metals and the sulfides in the wastewater do not reach a critical value, the main control module stirs the wastewater added with the flocculant by adjusting the rotating speed of a stirrer in the magnetic fluid flocculation device, so that the sedimentation of the heavy metals and the sulfides is realized; meanwhile, the water content of the flocculated sediment dehydrated by the spiral shell stacking dehydration processor is obtained by the water content sensor, and if the water content does not reach a dehydration critical value, the main control module dehydrates the sediment by adjusting the rotating speed of a screw in the spiral shell stacking dehydration processor and changing different diameters and screw pitches; and if the contents of heavy metals and sulfides in the wastewater reach the critical value, finishing the harmless treatment of the aquaculture wastewater.
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