CN104756916A - Self-maintaining reflowing type cold water salmon fry culture system - Google Patents
Self-maintaining reflowing type cold water salmon fry culture system Download PDFInfo
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- CN104756916A CN104756916A CN201510168404.6A CN201510168404A CN104756916A CN 104756916 A CN104756916 A CN 104756916A CN 201510168404 A CN201510168404 A CN 201510168404A CN 104756916 A CN104756916 A CN 104756916A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
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Abstract
The invention belongs to the field of aquaculture and particularly relates to a self-maintaining reflowing type cold water salmon fry culture system. The self-maintaining reflowing type cold water salmon fry culture system comprises an ultraviolet disinfection unit, a water quality terminal optimization unit, a circulating water culture tank, an arc-shaped sieve solid-liquid separation unit, a buffering adjusting tank, a biological filtering unit and a self-maintaining reflowing pipe group; newly-added supplemented water is supplied by a nearby water source land, and passes through the ultraviolet disinfection unit and the water quality terminal optimization unit to enter the circulating water culture tank; the water in the culture tank is circularly utilized. The self-maintaining reflowing type cold water salmon fry culture system is applicable to sealed type circulating water culture and can keep the biological purification capability of the system; the aim of self-maintaining inoculating-free aim of a circulating water treatment system is realized; a water circulating system can be continuously operated for a long period; the self-maintaining reflowing type cold water salmon fry culture system has the characteristics of strong functionality, low power consumption, small occupied area and less cost investment; the circulating utilization of water resources is realized; the self-maintaining reflowing type cold water salmon fry culture system is economical and efficient and is easy to popularize.
Description
Technical field
The invention belongs to aquaculture field, a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type specifically.
Background technology
Due to fish production start to carry out seawater in the urgent need to, numerous domestic aquatic products unit, the cyclic culture of fresh water is produced, experiment.Circulating water cultivation refers to that breeding water is after some column processing, mainly comprises the ammonia nitrogen and nitrite nitrogen of removing solubilised state in water, and improves dissolved oxygen in water, remove excess carbon dioxide in water, nitrogen etc. and make water quality again reach cultivation standard, for cultivation.Main methods is all quite similar in various cultivating system, mainly comprises the means such as physical filtering, biofiltration, sterilizing, aeration aerating.
Physical filtering link easily can not remove in time because of build up of dirt and produce blocking, affects breeding process, meanwhile, as adopted sedimentation basin or Microfilter, then needs larger place or energy consumption; Construction scale in multi-stage biological filter tank in biofiltration link is raw not easily to be held, and builds and too much causes construction cost and operating cost to increase, build and cause water treatment efficiency not reach requirement less.Said method simple combination uses and not only implements difficulty comparatively greatly, and treatment effect also can not be very good.
Therefore, based on the above analysis to existing circulating water culture system deficiency, in the urgent need to combining the national conditions of China, accelerated development has lower equipment cost, system operating power consumption cost, the ecological industrial circulating water culture system really friendly to environment.Cultivating system only in this way, just has real feasibility, can spread.
Summary of the invention
For solving above-mentioned the deficiencies in the prior art, the invention provides a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, this intrasystem breeding water uses through circular treatment Posterior circle, does not need repeated inoculation purifying water micrcxDrganism, comprising: comprise disinfection by ultraviolet light unit, the terminal optimized unit of water quality, circulating water cultivation pond, sieve bend solid-liquid separation unit, buffering regulating reservoir, biofiltration unit, safeguards return duct group certainly; Described disinfection by ultraviolet light unit, the terminal optimized unit of water quality, circulating water cultivation pond, sieve bend solid-liquid separation unit, buffering regulating reservoir, biofiltration unit connects successively, and described from safeguarding that return duct group input is connected with biofiltration unit with the terminal optimized unit of water quality, output is connected with sieve bend solid-liquid separation unit; Described biofiltration unit is connected with disinfection by ultraviolet light unit; Due to blowdown, evaporation, maintenance water quality, in system, breeding water need carry out a certain amount of discharge, within 20% of total Water, therefore need amount of makeup water, newly replenish water-filling to be supplied by neighbouring water head site, as underground water, fresh seawater, but all need through pretreatment, by disinfection by ultraviolet light unit, the terminal optimized unit of water quality enters circulating water cultivation pond.
The sterilization module that described disinfection by ultraviolet light unit adopts direct-injection type ultraviolet vertically to sterilize, the supplementary new water added and the backwater filtered by biofiltration unit, via disinfection by ultraviolet light unit, enter the terminal optimized unit of water quality; Apparatus for ultraviolet disinfection traditional at present also exists that cost is high, consume energy large problem, the sterilization module that the direct-injection type ultraviolet that native system adopts vertically is sterilized, the problem of circulating water cultivation backwater recycling prevention of damage by disease is solved by efficient disinfection by ultraviolet light, the cross-infection preventing noxious bacteria and virus from causing liking diffusion in water, substantially increases the safety of cycle water.Its maximum feature of direct-injection type ultraviolet vertical sterilizing device is efficient, energy-conservation and green non-pollution, reduces the labour intensity of cost, energy consumption and operational administrative than Conventional ultraviolet chlorination equipment.Modularized design, therefore the scale of installation is changeable, can adjust flexibly according to processing requirements and load.Ultraviolet disinfection module is arranged in disinfection by ultraviolet light well, disinfection well water (flow) direction bottom in and top out, and when not installing sterilization module, disinfection well only uses as crossing aquaporin.
The terminal optimized unit of described water quality is the buffering pond being provided with ORP controller and monitoring probe, its inside is also provided with oxygenation mouth and ozone entrance, connect oxygenate apparatus and ozone generating-device respectively, reach 10mg/L to oxygen in water concentration, logical ozone oxidation kills disease caused by infectious water substance; The terminal optimized unit of described water quality also connects degasser, and described degasser is connected with fan blower, blasts air and removes the carbonic acid gas and nitrogen that in water body, content is too much.This unit is controlled by oxygenation, ORP and the balance, degassed and remove the object that a series of technological means such as the biomembrane that comes off in cycle water and other impurity reach optimizing water quality of total gas level, make cycle water farthest revert to the level of fresh water, improve aquaculture organism adaptive capacity and immunity.Dissolved oxygen monitoring, CO can be added in inside
2the real-time online intelligent monitor systems such as concentration measurement and control, ORP monitoring, ORP be used to monitor ozone dissolved in water after the index of redox reaction current potential, oxidation-reduction electrode can weigh the Disinfection Effect of aquaculture water process, because the bactericidal effect of colon bacillus is subject to redox potential impact in water, so redox potential is the reliability index of water quality, redox potential value in water is equal to or higher than 650mv, then represent that bacteria containing amount is wherein acceptable.Each monitoring system co-ordination, closes with the unlatching controlling dissolved oxygen valve, maintains target dissolved oxygen content, and ORP monitoring can be connected with ultraviolet disinfection module intellectuality, controls ultraviolet disinfection module opening time and the scale of unlatching in terminal pond by monitoring.
Described circulating water cultivation pond is provided with circulating water reclamation assembly, and each culturing pool is installed a set of, and described circulating water reclamation assembly is opened type syphon structure; According to when aquaculture organism is ill in water level, if desired pond like this in breed variety regulating reservoir, can departs from separately circulation and change flowing water culture into, can water level monitor device be added, to monitor low water level.
Described sieve bend solid-liquid separation unit is the sieve bend distribution channel that upper surface is provided with sieve bend, is provided with overflow launder in described sieve bend distribution channel, to be drained by the water being greater than Treatment for Reuse amount; Sieve bend has sewage sump, and mudhole is established on sewage sump top, by enrichment dirt recoil on sieve bend to sewage sump, then can discharge cultivating system, with anti-clogging via mudhole; Sieve bend solid-liquid separation technique, its maximum feature of sieve bend equipment for separating liquid from solid is the discharge of water saving, energy-conservation and green non-pollution, minimizing waste water, adopt the water saving of the circulating water culture system of Microfilter Separation of Solid and Liquid can reach 100%-without the need to cleaning, energy-conservation 100%-without the need to power than conventional, reduce sewage discharge more than 80%, overall economic efficiency can improve more than 20%.This unit is intended to the solid particle polluter of removal more than 100 μm, and rotary drum Microfilter and sieve bend are all widely used in physical filtering step, and wherein Microfilter needs external source thing, and filter drum is rotated, and safeguards and also more bothers.Sieve bend is simply laid, and current are stayed from it, flows out, filtering solid particle polluter through it.
In described buffering regulating reservoir, immersible pump is installed, is connected with biofiltration unit by immersible pump; Slow down current, carry out buffer memory, then by water circulating pump, water is transported to acidic reduction oxidation pond.Immersible pump adopts submersible axial flow pump, lift 4.00m, flow 150m
3/ h, power of motor 3.00kw, often overlap circulation and install three, with two for one.
Described biofiltration unit comprises the acidifying reduction reaction pond of anaerobic environment and two biofilters of aerobic environment, the acidifying also eobiont having anaerobism is cultivated in described acidifying reduction reaction pond, the acidifying of anaerobism reduction bioremediation is adopted to carry out the method purified treatment of biological denitrificaion and precipitation, improve the microcirculation in biological bag and metabolic state, the ratio of BOD and the COD of water is improve through the water of the acidifying reduction treatment of anaerobism, water is become and more easily carries out nitrated process, biological cleaning for next step is carried out water quality and is prepared, water inlet is provided with above its side, be connected with immersible pump, delivery port is provided with below opposite side, be connected with the water inlet below the first biofilter, above first biofilter, delivery port is connected with water inlet above the second biofilter, below described second biofilter delivery port and disinfection by ultraviolet light unit with certainly safeguard that return duct group is connected, described biofilter is immersion bed biofilter, is provided with stereo-elastic biofilter material, lays aeration tube group bottom biofilter, by Roots blower air feed, and oxygen in water concentration 4-6mg/L,
Described from safeguarding that return duct group is by the overflow launder above biofilter, the pump pond be connected with the terminal optimized unit of water quality and the two pipeline be connected with sieve bend solid-liquid separation unit form.For ensureing that purifying water micrcxDrganism keeps higher level in treatment system, the method of segment reflux is adopted to maintain the content of purifying water micrcxDrganism in system, the front end intrasystem cycle water being back to system is come, the various purifying water micrcxDrganism dissociated in water can be back to front end to play the object of microbial inoculant like this, go round and begin again continual backflow, continual " inoculation ", this ensures that there the concentration of purifying water micrcxDrganism in system and the speed of purifying water micrcxDrganism renewal, maintain the vigor of system biological purification, thus the object of circular water treating system from maintaining non-inoculation is reached, circulation can be made to run without interruption for a long time, the amount of cure of the time circulation more of a specified duration run is higher.
Flow into from safeguarding that the return duct group water yield is the 10%-20% of the system water yield in the biofilter of the terminal optimized unit of described water quality and biofiltration unit.
Further, described system also comprises eddy current type separate tank, can make granule foreign heavier in cycle water backwater before entering sieve bend, carry out separation to remove, thus alleviate the filtration load of sieve bend, provide further relative savings the filter area of sieve bend, described eddy current type separate tank is connected via drainpipe with circulating water cultivation pond, and the other end is connected with sieve bend distribution reservoir, and described eddy current type separate tank is higher than sieve bend distribution reservoir 8-15cm.
Further, described circulating water reclamation assembly adopts Φ 160pvc pipe and tube manufacture, has recovery breeding wastewater (comprising water surface offscum), the dirt at the bottom of pond (can be discharged separately to alleviate the pressure of circular water treating system by constant pool inner water position (overflow), the blowdown of single pond.
Further, oxygenation adopts the oxygenation of liquid oxygen pure oxygen, and described oxygenation mechanism is venturi type ejector or low-head oxygen supply.
Further, described sieve bend filtering accuracy is 210-240 μm, and individual theoretical drainage amount is 50m3/h.
Further, in described disinfection by ultraviolet light treatment step, radiates ultraviolet wavelength is 220-230nm, can ensure brokenly meeting cell structure, destroy DNA or RNA chain structure.
Flow out again through disinfection by ultraviolet light after new water adds the water mixing of water and biofilter outflow and enter the terminal optimized unit of water quality, then wherein a part of water is through the suction of pump pool inner water pump from safeguarding return duct group, and remaining water delivers into each culturing pool by aqueduct by water pump.Then water flows into eddy current separate tank from culturing pool, the water flowed out from eddy current separate tank freely falls into sieve bend distribution reservoir, water after sieve bend filters enters buffering regulating reservoir, the water mixing that water filters via each group of sieve bend, slow down water velocity, have water circulating pump to carry to acidic reduction oxidation pond, water circulating pump, just as in buffering regulating reservoir, is separated out a pocket and is used for installing water pump in buffering regulating reservoir.Water is carried on acidic reduction oxidation pond by water pump, and current upper entering and lower leaving enters acidic reduction oxidation pond, and bottom in and top out enters biological purifying tank, and biological purifying tank divides two-stage, and wherein current bottom in and top out enters the first order, and upper entering and lower leaving enters the second level.In second level biological purifying tank part, by overflow launder and pipeline, part water being introduced from safeguarding return duct group, entering the distribution reservoir of sieve bend, recycle.The water that biofilter is flowed out enters disinfection by ultraviolet light well, water (flow) direction bottom in and top out.
In sum, the present invention be applicable to closed circulation water cultivation, have functional strong, low in energy consumption, floor space is little, the feature of cost less investment, achieves recycling of water resource, economical and efficient, be easy to promote.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
For making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
A kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, be applicable to closed circulation water cultivation, comprise: comprise disinfection by ultraviolet light unit, the terminal optimized unit of water quality, circulating water cultivation pond, sieve bend solid-liquid separation unit, buffering regulating reservoir, biofiltration unit, safeguards return duct group certainly; Described disinfection by ultraviolet light unit, the terminal optimized unit of water quality, circulating water cultivation pond, sieve bend solid-liquid separation unit, buffering regulating reservoir, biofiltration unit connects successively, and described from safeguarding that return duct group input is connected with biofiltration unit with the terminal optimized unit of water quality, output is connected with sieve bend solid-liquid separation unit; Described biofiltration unit is connected with disinfection by ultraviolet light unit; Newly replenish water-filling to be supplied by neighbouring water head site, by disinfection by ultraviolet light unit, the terminal optimized unit of water quality enters circulating water cultivation pond.
The sterilization module that described disinfection by ultraviolet light unit adopts direct-injection type ultraviolet vertically to sterilize, the supplementary new water added and the backwater filtered by biofiltration unit, via disinfection by ultraviolet light unit, enter the terminal optimized unit of water quality; Apparatus for ultraviolet disinfection traditional at present also exists that cost is high, consume energy large problem, the sterilization module that the direct-injection type ultraviolet that native system adopts vertically is sterilized, the problem of circulating water cultivation backwater recycling prevention of damage by disease is solved by efficient disinfection by ultraviolet light, the cross-infection preventing noxious bacteria and virus from causing liking diffusion in water, substantially increases the safety of cycle water.Its maximum feature of direct-injection type ultraviolet vertical sterilizing device is efficient, energy-conservation and green non-pollution, reduces the labour intensity of cost, energy consumption and operational administrative than Conventional ultraviolet chlorination equipment.Ultraviolet disinfection module is arranged in disinfection by ultraviolet light well, disinfection well water (flow) direction bottom in and top out.
The terminal optimized unit of described water quality is the buffering pond being provided with ORP controller and monitoring probe, its inside is also provided with oxygenation mouth and ozone entrance, connect oxygenate apparatus and ozone generating-device respectively, reach 10mg/L to oxygen in water concentration, logical ozone oxidation kills disease caused by infectious water substance; The terminal optimized unit of described water quality also connects degasser, and described degasser is connected with fan blower, blasts air and removes the carbonic acid gas and nitrogen that in water body, content is too much.This unit is controlled by oxygenation, ORP and the balance, degassed and remove the object that a series of technological means such as the biomembrane that comes off in cycle water and other impurity reach optimizing water quality of total gas level, make cycle water farthest revert to the level of fresh water, improve aquaculture organism adaptive capacity and immunity.The monitoring of inner interpolation dissolved oxygen, CO
2the real-time online intelligent monitor systems such as concentration measurement and control, ORP monitoring, ORP be used to monitor ozone dissolved in water after the index of redox reaction current potential, oxidation-reduction electrode can weigh the Disinfection Effect of aquaculture water process, because the bactericidal effect of colon bacillus is subject to redox potential impact in water, so redox potential is the reliability index of water quality, redox potential value in water is equal to or higher than 650mv, then represent that bacteria containing amount is wherein acceptable.Each monitoring system co-ordination, closes with the unlatching controlling dissolved oxygen valve, maintains target dissolved oxygen content, and ORP monitoring can be connected with ultraviolet disinfection module intellectuality, controls ultraviolet disinfection module opening time and the scale of unlatching in terminal pond by monitoring.
Described circulating water cultivation pond is provided with circulating water reclamation assembly, and each culturing pool is installed a set of, and described circulating water reclamation assembly is opened type syphon structure; When aquaculture organism is ill in this pond, departs from separately circulation and change flowing water culture into, add water level monitor device, to monitor low water level.
Described sieve bend solid-liquid separation unit is the sieve bend distribution channel that upper surface is provided with sieve bend, is provided with overflow launder in described sieve bend distribution channel, to be drained by the water being greater than Treatment for Reuse amount; Sieve bend has sewage sump, and mudhole is established on sewage sump top, by enrichment dirt recoil on sieve bend to sewage sump, then can discharge cultivating system, with anti-clogging via mudhole; Sieve bend solid-liquid separation technique, its maximum feature of sieve bend equipment for separating liquid from solid is the discharge of water saving, energy-conservation and green non-pollution, minimizing waste water, adopt the water saving of the circulating water culture system of Microfilter Separation of Solid and Liquid can reach 100%-without the need to cleaning, energy-conservation 100%-without the need to power than conventional, reduce sewage discharge more than 80%, overall economic efficiency can improve more than 20%.This unit is intended to the solid particle polluter of removal more than 100 μm, and rotary drum Microfilter and sieve bend are all widely used in physical filtering step, and wherein Microfilter needs external source thing, and filter drum is rotated, and safeguards and also more bothers.Sieve bend is simply laid, and current are stayed from it, flows out, filtering solid particle polluter through it.
In described buffering regulating reservoir, immersible pump is installed, is connected with biofiltration unit by immersible pump; Slow down current, carry out buffer memory, then by water circulating pump, water is transported to acidic reduction oxidation pond.Immersible pump adopts submersible axial flow pump, lift 4.00m, flow 150m
3/ h, power of motor 3.00kw, often overlap circulation and install three, with two for one.
Described biofiltration unit comprises the acidifying reduction reaction pond of anaerobic environment and two biofilters of aerobic environment, the acidifying also eobiont having anaerobism is cultivated in described acidifying reduction reaction pond, the acidifying of anaerobism reduction bioremediation is adopted to carry out the method purified treatment of biological denitrificaion and precipitation, improve the microcirculation in biological bag and metabolic state, the ratio of BOD and the COD of water is improve through the water of the acidifying reduction treatment of anaerobism, water is become and more easily carries out nitrated process, biological cleaning for next step is carried out water quality and is prepared, water inlet is provided with above its side, be connected with immersible pump, delivery port is provided with below opposite side, be connected with the water inlet below the first biofilter, above first biofilter, delivery port is connected with water inlet above the second biofilter, below described second biofilter delivery port and disinfection by ultraviolet light unit with certainly safeguard that return duct group is connected, described biofilter is immersion bed biofilter, is provided with stereo-elastic biofilter material, lays aeration tube group bottom biofilter, by Roots blower air feed, and oxygen in water concentration 5mg/L,
Described from safeguarding that return duct group is by the overflow launder above biofilter, the pump pond be connected with the terminal optimized unit of water quality and the two pipeline be connected with sieve bend solid-liquid separation unit form.For ensureing that purifying water micrcxDrganism keeps higher level in treatment system, the method of segment reflux is adopted to maintain the content of purifying water micrcxDrganism in system, the front end intrasystem cycle water being back to system is come, the various purifying water micrcxDrganism dissociated in water can be back to front end to play the object of microbial inoculant like this, go round and begin again continual backflow, continual " inoculation ".
Flow into from safeguarding that the return duct group water yield is 15% of the system water yield in the biofilter of the terminal optimized unit of described water quality and biofiltration unit.
Described system also comprises eddy current type separate tank, can make granule foreign heavier in cycle water backwater before entering sieve bend, carry out separation to remove, thus alleviate the filtration load of sieve bend, provide further relative savings the filter area of sieve bend, described eddy current type separate tank is connected via drainpipe with circulating water cultivation pond, the other end is connected with sieve bend distribution reservoir, and described eddy current type separate tank is higher than sieve bend distribution reservoir 10cm.
Described circulating water reclamation assembly adopts Φ 160pvc pipe and tube manufacture, has recovery breeding wastewater (comprising water surface offscum), the dirt at the bottom of pond (can be discharged separately to alleviate the pressure of circular water treating system by constant pool inner water position (overflow), the blowdown of single pond.
Oxygenation adopts the oxygenation of liquid oxygen pure oxygen, and described oxygenation mechanism is low-head oxygen supply.
Described sieve bend filtering accuracy is 225 μm, and individual theoretical drainage amount is 50m3/h.
In described disinfection by ultraviolet light treatment step, radiates ultraviolet wavelength is 225nm, can ensure brokenly meeting cell structure, destroy DNA or RNA chain structure.
The maximum biological bearing capacity of the present embodiment breeding water body: 30kg/m3; Water quality after treatment can reach NH
4-N≤0.15mg/L(ammonia nitrogen), NO
2-N≤0.02mg/L(nitrite nitrogen), COD≤2mg/L, SS≤10mg/L(suspended solid), pH=7.5-8.2, DO(are in culturing pool output water temperature 20 DEG C of)≤10mg/L; Every (24 hours) water circulation number of times :≤20 round the clock; The system self-maintenance backflow water yield: 10-20%; New water supplements addition: < 20m3/d.
Below the present invention be described in detail, the above, be only the preferred embodiment of the present invention, when not limiting the scope of the present invention, namely allly does impartial change according to the application's scope and modify, all should still belong in covering scope of the present invention.
Claims (8)
1. certainly safeguard the cold aqueous Salmons seedling system of reverse-flow type for one kind, it is characterized in that: this intrasystem breeding water uses through circular treatment Posterior circle, do not need repeated inoculation purifying water micrcxDrganism, wherein, be provided with the terminal optimized unit of water quality in circular treatment and certainly safeguard return duct group;
The terminal optimized unit of described water quality is the buffering pond being provided with ORP controller and monitoring probe, and its inside is also provided with oxygenation mouth and ozone entrance, connects oxygenate apparatus and ozone generating-device respectively; The terminal optimized unit of described water quality also connects degasser, and described degasser is connected with fan blower; The terminal optimized unit of described water quality is connected with pump pond, described pump pond pipeline with certainly safeguard that the input of return duct is connected;
Described certainly safeguard that return duct group adopts the method for segment reflux, being made up of the overflow launder of input linkage unit, pump pond and each connecting pipe, flowing into from safeguarding that the return duct group water yield is the 10%-20% of the system water yield.
2. one as claimed in claim 1 is from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: this system comprises disinfection by ultraviolet light unit, circulating water cultivation pond, sieve bend solid-liquid separation unit, buffering regulating reservoir, and biofiltration unit; Described disinfection by ultraviolet light unit, the terminal optimized unit of water quality, circulating water cultivation pond, sieve bend solid-liquid separation unit, buffering regulating reservoir, biofiltration unit connects successively;
Described from safeguarding that return duct group input is connected with the overflow launder of biofiltration unit with the pump pond of the terminal optimized unit of water quality, output and sieve bend solid-liquid separation unit are connected to form from safeguarding reflux cycle;
Described biofiltration unit is connected with disinfection by ultraviolet light unit, forms aquaculture water circulation;
New water supplements and adds by disinfection by ultraviolet light unit, and the terminal optimized unit of water quality enters circulating water cultivation pond.
3. as claimed in claim 1 a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: described system also comprises eddy current type separate tank, described eddy current type separate tank is connected via drainpipe with circulating water cultivation pond, the other end is connected with sieve bend distribution reservoir, and described eddy current type separate tank is higher than sieve bend distribution reservoir 8-15cm.
4. as claimed in claim 1 a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: the monitoring probe of the terminal optimized unit of described water quality is dissolved oxygen monitoring probe, CO
2concentration monitor probe, ORP monitoring probe, described monitoring probe is connected with real-time online intelligent monitor system, and the unlatching that described control system controls dissolved oxygen valve closes.
5. as claimed in claim 1 a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: described ORP controller is connected with ultraviolet disinfection module intellectuality, control ultraviolet disinfection module opening time and the scale of unlatching.
6. as claimed in claim 1 a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: oxygenation adopts the oxygenation of liquid oxygen pure oxygen, and described oxygenation mechanism is venturi type ejector or low-head oxygen supply.
7. as claimed in claim 1 a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: described sieve bend solid-liquid separation unit uses sieve bend to filter, and precision is 210-240 μm, and individual theoretical drainage amount is 50m3/h.
8. as claimed in claim 1 a kind of from safeguarding the cold aqueous Salmons seedling system of reverse-flow type, it is characterized in that: in described disinfection by ultraviolet light treatment step, radiates ultraviolet wavelength is 220-230nm.
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| CN109231685A (en) * | 2018-10-18 | 2019-01-18 | 无锡康立斯科技发展有限公司 | A kind of environment-friendly and energy-efficient sea water and fresh water industrial aquaculture system circulation water treatment system and method |
| CN110089479A (en) * | 2019-06-18 | 2019-08-06 | 岭南师范学院 | A kind of aquatic products recirculated water culture Laboratory culture device |
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| CN114747513A (en) * | 2022-03-17 | 2022-07-15 | 中国水产科学研究院黑龙江水产研究所 | High-density cultivation method for early juvenile fishes of brachymystax lenok |
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