CN103563830A - Technology for economical and practical circulating water breeding of cynoglossus semilaevis - Google Patents
Technology for economical and practical circulating water breeding of cynoglossus semilaevis Download PDFInfo
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- CN103563830A CN103563830A CN201310588433.9A CN201310588433A CN103563830A CN 103563830 A CN103563830 A CN 103563830A CN 201310588433 A CN201310588433 A CN 201310588433A CN 103563830 A CN103563830 A CN 103563830A
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Abstract
The invention provides a technology for economical and practical circulating water breeding of cynoglossus semilaevis. The technology is composed of a circulating water disposal process and a breeding operation process. The circulating water disposal process comprises the steps that breeding water pumped through a water pump enters a circulating water breeding system; water in a circulating water breeding pool is recycled to an arc screen through a circulating water discharging and draining device, so that large-particle residual feed and excrement are eliminated through filtration; the water disposed through the arc screen is pumped through a circulating pump to a protein separator, so that solid-liquid separation is conducted, and organic matter is further removed; the water disposed through the protein separator enters a biological disposal pool; the water disposed through the biological disposal pool is circulated to the circulating water breeding pool after the water is disposed through an ultraviolet disinfection device and after liquid oxygen is input to the water through a liquid oxygen input device. According to the technology for economical and practical circulating water breeding of the cynoglossus semilaevis, the total manufacturing cost of the established circulating water breeding system is low, the water disposal efficiency in the circulating water breeding system is high, the energy consumption is low, the cultivation yield of the cynoglossus semilaevis is high, and the amount of consumed new water is small.
Description
Technical field
The present invention relates to fish industrial circulating water cultivating facility technology field, be specifically related to a kind of economic and practical type Cynoglossus semilaevis circulation water breeding technique.
background technology
Cynoglossus semilaevis is the famous and precious fish of China tradition, has the suitable salt scope of thermophilic wide, strong stress resistance, nutritious, delicious meat, fast growth, the advantage such as dressing percentage is high, economic worth is large.In recent years along with the raising of people's living standard, demand to Cynoglossus semilaevis is more and more stronger, but, because Cynoglossus semilaevis natural resources is few, only depend on and fish for and cannot meet the need of market, increasing breeding enterprise is taken to cynoglossus semilaevis cultivation, and Cynoglossus semilaevis has become one of China's marine fish principal item.
Cynoglossus semilaevis cultivation has the various ways such as net cage, pond, batch production at present, wherein industrial aquaculture mainly contains " green house+deep-well seawater ", circulating water cultivation pattern, the former is low in breeding process mid-early stage investment, operate relatively simple, shortcoming be need winter to heat up, breeding water discharge causes environmental pollution, water requirement is large, and circulating water cultivation has overcome above shortcoming accordingly.At current water resource growing tension, advocate energy-saving and emission-reduction in the situation that, more and more breeding enterprises attempt using circulating water cultivation pattern, but most circulating water culture system constructing technologies are complicated, cost is expensive, operation requirements is high, cause many middle-size and small-size breeding enterprises to be hung back, therefore a kind of invention of economic and practical type cynoglossus semilaevis cultivation technique is to promoting applying of Cynoglossus semilaevis industrial circulating water cultivating significant.
Summary of the invention
For solving the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of economic and practical type Cynoglossus semilaevis circulation water breeding technique, make it improve water treatment efficiency, reduce energy consumption and water treatment system cost, strengthen water treatment system stability.
Technical scheme of the present invention is: a kind of economic and practical type Cynoglossus semilaevis circulation water breeding technique, comprises the steps: that the breeding water that water pump extracts enters circulating water culture system; Water after sieve bend is processed is extracted into protein separator through circulating pump to carry out Separation of Solid and Liquid and further removes organic matter; Protein separator enters biological treatment tank after processing; Water after biological treatment is circulated to culturing pool after apparatus for ultraviolet disinfection processing, liquid oxygen input unit input liquid oxygen; The water in circulating water cultivation pond is recycled to and enters the residual bait ight soil of sieve bend filtration larger particles through cycle water draining blowdown apparatus.
Optimize, the arc radius R of sieve bend is 2660mm, bar gap 0.25mm, filter area 0.60m2.
Optimize, on the blowdown of cycle water draining blowdown apparatus, drainage pipeline, elasticity hairbrush blocking apparatus is set respectively, suspension in residual bait, ight soil, water is carried out to elementary interception.
Optimize, circulating pump arranges frequency converter and regulates its power, according to circulatory system cultivation saturation and culturing pool usage amount, controls the day internal circulating load of culturing pool.
Optimize, with the ozone that jet pump produces ozone generator, pass in protein separator, the cause of disease such as effective kill bacteria, virus, parasite when promoting Separation of Solid and Liquid.
Optimize, biological treatment tank is comprised of three grades of biofilters, first order biofilter material adopts the stereo-elastic filtrate that specific surface area is 100m2/m3, and the second level adopts the stereo-elastic filtrate that specific surface area is 200m2/m3, and the third level adopts the holey biologic packing material that specific surface area is 380m2/m3.
Optimize, degasser is set before disinfection by ultraviolet light after biological treatment, degasser adopts and drips filter formula biofilter, carries out final stage biological cleaning in degassed process simultaneously, and the filtrate that degasser adopts is that specific surface area is the biological bag of BIO-BLOK of 100m2/m3.
Optimize, the ammonia nitrogen of water, content of nitrite in circulating water cultivation pond, at 0.2mg/L with below 0.1mg/L, dissolved oxygen content remains on 8mg/L～12mg/L respectively, and pH value is controlled at 7.5～8.2.
Optimize, circulating water cultivation pond adopts circular pond, and pond diameter is 5: 1 to 10: 1 to the ratio of the degree of depth.
Optimize, while throwing something and feeding bait, regulate in advance circulating pump frequency converter, reduce frequency, thereby reduce cycle water flow velocity in culturing pool, be convenient to ingesting of fish, reduce the loss of bait, after the end of ingesting, be adjusted to again original frequency.
The arc-shaped solid-liquid separation sieve of circulating water cultivation special use is set at the discharge outlet place of culturing pool, the radian of sieve plate, bar grid gap and effective area are all passed through to test of many times and be optimized selection, finally determine that arc radius R is 2660mm, bar gap 0.25mm, filter area 0.60m
2, be optimal selection.
The present invention carries out Separation of Solid and Liquid by the draining of culturing pool through sieve bend the solid sundries such as residual bait ight soil is separated in real time, prevent from water, continuing to decompose, this has just improved the water quality of recycle-water greatly, alleviated greatly the processing load of circular water treating system, the volume that rear class is processed reduces greatly, thereby reduced the cost of whole system, because sieve bend is in operation without any need for power and water for cleaning, separated solid is not messy, therefore the application of sieve bend is one of key technology of system.
Water more clear after sieve bend carries out Separation of Solid and Liquid enters pump pond, pump pond is again the regulating reservoir of cycle water, discharge that can stable equilibrium's cycle water, by circulation axial-flow immersible pump, enter albumen air flotation separator and carry out the separated further processing of foam protein, the fine impurities such as suspension that here cannot be separated by solid-liquid separator and colloid albumen utilize pneumatically supported method to separate.
Adopting air supporting is to utilize can adsorb at bubble surface various granular dirt and the protein soluble in water being mingled in water, carries out the process of separated contracting.Suction-operated is exactly to make the solute of gas or bubble surface concentrated, the foam that removing forms on liquid surface, can remove the material being concentrated, add a small amount of ozone to increase treatment effect, thereby reach organic fine suspension harmful in fast eliminating water, directly from water, adsorbing and removing falls the organic matters such as colloid, cellulose, albumin, prevents that it from decomposing in water body, reaches rapid minimizing NH in circulating water treatment
3the object of-N and COD, the biological treatment that further alleviates next flow process is loaded.
Ozonation treatment device is mainly here for reducing the NO very harmful to aquaculture organism
2-N arranges, and ozonation treatment is located in Protein Skimmer, utilizes the microcoacervation effect of ozone can strengthen the impurity such as separated small suspension and foam, and result of use is ideal.
Through the cycle water of air supporting integrated treatment, enter the biofilter that is connected to efficient halophile water purification microorganism and carry out biological cleaning, here NH
3-N, NO
2the harmful substances such as-N all will effectively be removed.
Biological cleaning is three grades, and it is 100m that first order biofilter material adopts specific surface area
2/ m
3stereo-elastic filtrate, it is 200m that the second level adopts specific surface area
2/ m
3stereo-elastic filtrate, it is 380m that the third level adopts the specific surface area of the independent intellectual property right that we develop voluntarily
2/ m
3holey biologic packing material, so just the permeability of biofilter material and the problem of specific surface area have well been taken into account, because front end twice sieve bend and dissolved air flotation are effectively processed, to the load of biological cleaning here, alleviate greatly, therefore smaller what can do aspect whole biological treatment, this just greatly reduces cost and floor space.
After biological treatment, before disinfection by ultraviolet light, be provided with degasser, degasser is again one filter formula biofilter, carries out final stage biological cleaning in degassed process simultaneously, and the filtrate that degasser adopts is that specific surface area is 100m
2/ m
3the biological bag of BIO-BLOK, this filtrate void ratio is conducive to more greatly the exchange of air water.
Degasser is mainly used for driving away pernicious gases such as residual ozone, carbonic acid gas and nitrogen in water and total gas level in water and water quality is approached and be better than fresh nature seawater.
Cycle water sterilization, we adopt Ultraviolet Disinfection, utilize high efficiency, high strength and long-life ultraviolet light generating means of particular design, compared with conventional apparatus for ultraviolet disinfection have that disinfection process is long, ultraviolet wave attenuation is little, energy-saving efficiency is high, cheap and for ease of maintenaince with the feature such as cleaning.
Cycle water oxygenation, what native system was used is liquid oxygen, and the dissolved oxygen mode of employing is nanometer oxygen diffuser releasing oxygen aqueous vapor convection current ladder ring packing mixed dissolution, and the availability of oxygen has almost reached absolutely.
By this handling process, the water of handling flow back in culturing pool again, thus the circular flow going round and beginning again.
In daily production, during the operations such as the ,Shua of falling pond pond, adjustment density, first the water of 2/3 left and right in pond is evacuated to sky pond with water pump standby, the water in former pond is drawn back to fishpond after having operated, only supplement the 1/3 new water in left and right.First that the water circulation of 4/5 left and right in biological tank is standby to empty pond while cleaning biological tank, after having operated, drawn back biological tank, only supplement the 1/5 new water in left and right.
The invention has the beneficial effects as follows:
1, in breeding technique provided by the invention, by means such as circulating water cultivation draining blowdown apparatus, sieve bend, protein separator, ozonization, ultraviolet disinfection, three grades of biological tank filtration treatment, greatly improved the disposal ability of system; Especially elementary more than 40% residual bait, ight soil, the suspension etc. tackled of elasticity hairbrush blocking apparatus that arrange on the water return pipeline of circulating water cultivation draining blowdown apparatus, effectively alleviate the pressure of subsequent treatment, system is processed more efficient, for fish body provides good living environment.This technological operation is simple, remarkable benefit.Constructed circulating water culture system total cost is like product 1/5, when can improve water treatment efficiency in cultivating system 60% of the international like product of energy consumption Jin Wei; Cynoglossus semilaevis cultivation output reaches 15kg/m
2above, compare flowing water culture pattern and improved 50%～100%, greatly improved culture benefit; The consumption of new water water yield is less than 10m
3/ kg.
2, this energy saving technology reduces discharging, environmental protection.This technique is taked the aquaculture model of " deep-well seawater+circulation ", water temperature is constant, recycle, solved the problem that cynoglossus semilaevis cultivation needs winter and heats up, greatly reduced the discharge of breeding wastewater simultaneously, compare the water saving of flowing water culture pattern more than 95%, the cultivation per kilogram Cynoglossus semilaevis consumption of new water water yield is less than 10m
3, power consumption is less than 8kW; At the crucial kinetic pump circulating pump of whole system, place arranges frequency converter, according to cultivating workshop capacity, adjusts at any time circulation pump power, further reaches energy-saving effect.
3, the regular job in the production management of this process optimization, necessity in daily production operates as brushes in the process such as ,Dao pond, pond, cleaning biological tank, the recycling of the proposition culturing pool of novelty, is evacuated to culturing pool sky pond in advance, draws back former pond after having operated again.Avoid on the one hand the invalid discharge of aquaculture water, saved water resource; Can keep the stability of whole water circulation system on the other hand, reduce the stress reaction of fish, be conducive to the healthy aquaculture of Cynoglossus semilaevis.
Accompanying drawing explanation
Fig. 1 is a kind of economic and practical type Cynoglossus semilaevis circulation water breeding technique flow chart of the present invention.
Embodiment
Below in conjunction with drawings and embodiments, further illustrate the present invention.
The technical scheme of present embodiment is: a kind of economic and practical type Cynoglossus semilaevis circulation water breeding technique, comprises the steps: that the breeding water that water pump extracts enters circulating water culture system; Water after sieve bend is processed is extracted into protein separator through circulating pump to carry out Separation of Solid and Liquid and further removes organic matter; Protein separator enters biological treatment tank after processing; Water after biological treatment is circulated to culturing pool after apparatus for ultraviolet disinfection processing, liquid oxygen input unit input liquid oxygen; The water in circulating water cultivation pond is recycled to and enters the residual bait ight soil of sieve bend filtration larger particles through cycle water draining blowdown apparatus.
The arc radius R of sieve bend is 2660mm, bar gap 0.25mm, filter area 0.60m
2.
On the blowdown of cycle water draining blowdown apparatus, drainage pipeline, elasticity hairbrush blocking apparatus is set respectively, suspension in residual bait, ight soil, water is carried out to elementary interception.
Circulating pump arranges frequency converter and regulates its power, according to circulatory system cultivation saturation and culturing pool usage amount, controls the day internal circulating load of culturing pool.
With the ozone that jet pump produces ozone generator, pass in protein separator the cause of disease such as effective kill bacteria, virus, parasite when promoting Separation of Solid and Liquid.
Biological treatment tank is comprised of three grades of biofilters, first order biofilter material adopts the stereo-elastic filtrate that specific surface area is 100m2/m3, the second level adopts the stereo-elastic filtrate that specific surface area is 200m2/m3, and the third level adopts the holey biologic packing material that specific surface area is 380m2/m3.
Degasser is set before disinfection by ultraviolet light after biological treatment, and degasser adopts and drips filter formula biofilter, carries out final stage biological cleaning in degassed process simultaneously, and the filtrate that degasser adopts is that specific surface area is the biological bag of BIO-BLOK of 100m2/m3.
The ammonia nitrogen of water, content of nitrite in circulating water cultivation pond, at 0.2mg/L with below 0.1mg/L, dissolved oxygen content remains on 8mg/L～12mg/L respectively, and pH value is controlled at 7.5～8.2.
Circulating water cultivation pond adopts circular pond, and pond diameter is 5: 1 to 10: 1 to the ratio of the degree of depth.
While throwing something and feeding bait, regulate in advance circulating pump frequency converter, reduce frequency, thereby reduce cycle water flow velocity in culturing pool, be convenient to ingesting of fish, reduce the loss of bait, after the end of ingesting, be adjusted to again original frequency.
In daily production, during the operations such as the ,Shua of falling pond pond, adjustment density, first the water of 2/3 left and right in pond is evacuated to sky pond with water pump standby, the water in former pond is drawn back to fishpond after having operated, only supplement the 1/3 new water in left and right.First that the water circulation of 4/5 left and right in biological tank is standby to empty pond while cleaning biological tank, after having operated, drawn back biological tank, only supplement the 1/5 new water in left and right.
The arc-shaped solid-liquid separation sieve of circulating water cultivation special use is set at the discharge outlet place of culturing pool, the radian of sieve plate, bar grid gap and effective area are all passed through to test of many times and be optimized selection, finally determine that arc radius R is 2660mm, bar gap 0.25mm, filter area 0.60m2 is optimal selection.
Present embodiment is carried out Separation of Solid and Liquid by the draining of culturing pool through sieve bend the solid sundries such as residual bait ight soil is separated in real time, prevent from water, continuing to decompose, this has just improved the water quality of recycle-water greatly, alleviated greatly the processing load of circular water treating system, the volume that rear class is processed reduces greatly, thereby reduced the cost of whole system, because sieve bend is in operation without any need for power and water for cleaning, separated solid is not messy, therefore the application of sieve bend is one of key technology of system.
Water more clear after sieve bend carries out Separation of Solid and Liquid enters pump pond, pump pond is again the regulating reservoir of cycle water, discharge that can stable equilibrium's cycle water, by circulation axial-flow immersible pump, enter albumen air flotation separator and carry out the separated further processing of foam protein, the fine impurities such as suspension that here cannot be separated by solid-liquid separator and colloid albumen utilize pneumatically supported method to separate.
Adopting air supporting is to utilize can adsorb at bubble surface various granular dirt and the protein soluble in water being mingled in water, carries out separated concentrated process.Suction-operated is exactly to make the solute of gas or bubble surface concentrated, the foam that removing forms on liquid surface, can remove the material being concentrated, add a small amount of ozone to increase treatment effect, thereby reach organic fine suspension harmful in fast eliminating water, directly from water, adsorbing and removing falls the organic matters such as colloid, cellulose, albumin, prevent that it from decomposing in water body, in circulating water treatment, reach the object of rapid minimizing NH3-N and COD, further alleviate the biological treatment load of next flow process.
Ozonation treatment device, mainly here for reducing, the very harmful NO2-N of aquaculture organism to be arranged, ozonation treatment is located in Protein Skimmer, utilizes the microcoacervation effect of ozone can strengthen the impurity such as separated small suspension and foam, and result of use is ideal.
Through the cycle water of air supporting integrated treatment, enter the biofilter that is connected to efficient halophile water purification microorganism and carry out biological cleaning, here the harmful substance such as NH3-N, NO2-N all will effectively be removed.
Biological cleaning is three grades, first order biofilter material adopts the stereo-elastic filtrate that specific surface area is 100m2/m3, the second level adopts the stereo-elastic filtrate that specific surface area is 200m2/m3, the third level adopts the holey biologic packing material that the specific surface area of the independent intellectual property right that we develop is voluntarily 380m2/m3, so just the permeability of biofilter material and the problem of specific surface area have well been taken into account, because front end twice sieve bend and dissolved air flotation are effectively processed, to the load of biological cleaning here, alleviate greatly, therefore smaller what can do aspect whole biological treatment, this just greatly reduces cost and floor space.
After biological treatment, before disinfection by ultraviolet light, be provided with degasser, degasser is again one and drips filter formula biofilter, in degassed process, carry out final stage biological cleaning simultaneously, the filtrate that degasser adopts is that specific surface area is the biological bag of BIO-BLOK of 100m2/m3, and this filtrate void ratio is conducive to more greatly the exchange of air water.
Degasser is mainly used for driving away pernicious gases such as residual ozone, carbonic acid gas and nitrogen in water and total gas level in water and water quality is approached and be better than fresh nature seawater.
Cycle water sterilization, we adopt Ultraviolet Disinfection, utilize high efficiency, high strength and long-life ultraviolet light generating means of particular design, compared with conventional apparatus for ultraviolet disinfection have that disinfection process is long, ultraviolet wave attenuation is little, energy-saving efficiency is high, cheap and for ease of maintenaince with the feature such as cleaning.
Cycle water oxygenation, what native system was used is liquid oxygen, and the dissolved oxygen mode of employing is nanometer oxygen diffuser releasing oxygen aqueous vapor convection current ladder ring packing mixed dissolution, and the availability of oxygen has almost reached absolutely.
By this handling process, the water of handling flow back in culturing pool again, thus circular flow again and again.
The feature of present embodiment is:
1, in the breeding technique that present embodiment provides, by means such as circulating water cultivation draining blowdown apparatus, sieve bend, protein separator, ozonization, ultraviolet disinfection, three grades of biological tank filtration treatment, greatly improved the disposal ability of system; Especially elementary more than 40% residual bait, ight soil, the suspension etc. tackled of elasticity hairbrush blocking apparatus that arrange on the water return pipeline of circulating water cultivation draining blowdown apparatus, effectively alleviate the pressure of subsequent treatment, system is processed more efficient, for fish body provides good living environment.This technological operation is simple, remarkable benefit.Constructed circulating water culture system total cost is like product 1/5, when can improve water treatment efficiency in cultivating system 60% of the international like product of energy consumption Jin Wei; More than cynoglossus semilaevis cultivation output reaches 15kg/m2, compare flowing water culture pattern and improved 50%～100%, greatly improved culture benefit; The consumption of new water water yield is less than 10m3/kg.
2, this energy saving technology reduces discharging, environmental protection.This technique is taked the aquaculture model of " deep-well seawater+circulation ", water temperature is constant, recycle, solved the problem that cynoglossus semilaevis cultivation needs winter and heats up, greatly reduced the discharge of breeding wastewater simultaneously, compare the water saving of flowing water culture pattern more than 95%, the cultivation per kilogram Cynoglossus semilaevis consumption of new water water yield is less than 10m3, and power consumption is less than 8kW; At the crucial kinetic pump circulating pump of whole system, place arranges frequency converter, according to cultivating workshop capacity, adjusts at any time circulation pump power, further reaches energy-saving effect.
3, the regular job in the production management of this process optimization, necessity in daily production operates as brushes in the process such as ,Dao pond, pond, cleaning biological tank, the recycling of the proposition culturing pool of novelty, is evacuated to culturing pool sky pond in advance, draws back former pond after having operated again.Avoid on the one hand the invalid discharge of aquaculture water, saved water resource; Can keep the stability of whole water circulation system on the other hand, reduce the stress reaction of fish, be conducive to the healthy aquaculture of Cynoglossus semilaevis.
Claims (10)
1. an economic and practical type Cynoglossus semilaevis circulation water breeding technique, is characterized in that: comprise the steps: that the breeding water that water pump extracts enters circulating water culture system; Water after sieve bend is processed is extracted into protein separator through circulating pump to carry out Separation of Solid and Liquid and further removes organic matter; Protein separator enters biological treatment tank after processing; Water after biological treatment is circulated to culturing pool after apparatus for ultraviolet disinfection processing, liquid oxygen input unit input liquid oxygen; The water in circulating water cultivation pond is recycled to and enters the residual bait ight soil of sieve bend filtration larger particles through cycle water draining blowdown apparatus.
2. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 1, is characterized in that: the arc radius R of sieve bend is 2660mm bar gap 0.25mm, filter area 0.60m
2.
3. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 2, it is characterized in that: on the blowdown of cycle water draining blowdown apparatus, drainage pipeline, elasticity hairbrush blocking apparatus is set respectively, suspension in residual bait, ight soil, water is carried out to elementary interception.
4. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 3, is characterized in that: circulating pump arranges frequency converter and regulates its power, according to circulatory system cultivation saturation and culturing pool usage amount, controls the day internal circulating load of culturing pool.
5. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 4, it is characterized in that: with the ozone that jet pump produces ozone generator, pass in protein separator the cause of disease such as effective kill bacteria, virus, parasite when promoting Separation of Solid and Liquid.
6. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 5, is characterized in that: biological treatment tank is comprised of three grades of biofilters, and it is 100m that first order biofilter material adopts specific surface area
2/ m
3stereo-elastic filtrate, it is 200m that the second level adopts specific surface area
2/ m
3stereo-elastic filtrate, it is 380m that the third level adopts specific surface area
2/ m
3holey biologic packing material.
7. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 6, it is characterized in that: degasser is set before disinfection by ultraviolet light after biological treatment, degasser adopts and drips filter formula biofilter, in degassed process, carry out final stage biological cleaning, the filtrate that degasser adopts is that specific surface area is 100m simultaneously
2/ m
3the biological bag of BIO-BLOK.
8. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 7, it is characterized in that: the ammonia nitrogen of water, content of nitrite in circulating water cultivation pond, respectively at 0.2mg/L with below 0.1mg/L, dissolved oxygen content remains on 8mg/L～12mg/L, and pH value is controlled at 7.5～8.2.
9. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 8, is characterized in that: circulating water cultivation pond adopts circular pond, and pond diameter is 5: 1 to 10: 1 to the ratio of the degree of depth.
10. economic and practical type Cynoglossus semilaevis circulation water breeding technique according to claim 9, it is characterized in that, while throwing something and feeding bait, regulate in advance circulating pump frequency converter, reduce frequency, thereby reduce cycle water flow velocity in culturing pool, be convenient to ingesting of fish, reduce the loss of bait, after the end of ingesting, be adjusted to again original frequency.
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| CN104430134A (en) * | 2014-11-28 | 2015-03-25 | 金贝尔(福建)水环境工程有限公司 | Efficient, energy-saving and land-saving factory circulating water high-density breeding system |
| CN104430134B (en) * | 2014-11-28 | 2017-01-04 | 金贝尔(福建)水环境工程有限公司 | A kind of energy-efficient industrial circulating water high-density cultivation system saved land |
| CN104926027A (en) * | 2015-05-27 | 2015-09-23 | 通威股份有限公司 | Recycling method of water for seedling culture in fresh water |
| CN106186520A (en) * | 2016-07-26 | 2016-12-07 | 福建省闽东水产研究所 | It is applicable to the circulation water breeding technique of Carnis Pseudosciaenae |
| CN106186520B (en) * | 2016-07-26 | 2019-03-19 | 福建省闽东水产研究所 | Circulation water breeding technique suitable for Larimichthys crocea |
| CN109368931A (en) * | 2018-11-26 | 2019-02-22 | 浙江海洋大学 | The modification method of flounder flounder class breeding water |
| 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 |
| CN110089479B (en) * | 2019-06-18 | 2024-04-12 | 岭南师范学院 | Aquatic product circulating water culture laboratory breeding device |
| CN110384066A (en) * | 2019-08-09 | 2019-10-29 | 李迅 | A kind of sea farming system with high yield low-carbon environment-friendly |
| CN114014490A (en) * | 2021-09-28 | 2022-02-08 | 北京工商大学 | Intensive industrial recirculating aquaculture system based on ecological environment protection and working method thereof |
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