CN1248398A - Closed circulation cultivation system - Google Patents
Closed circulation cultivation system Download PDFInfo
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- CN1248398A CN1248398A CN98110480A CN98110480A CN1248398A CN 1248398 A CN1248398 A CN 1248398A CN 98110480 A CN98110480 A CN 98110480A CN 98110480 A CN98110480 A CN 98110480A CN 1248398 A CN1248398 A CN 1248398A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
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Abstract
The closed circulating cultivation system is mainly characterized by that making the tail water discharged from cultivating pool pass through microfiltering machine to make separation of residual forage and excrement, then making aeration and nitration by means of biological contact oxidation tank and automatic aerator, and setting of netty biological bag to make decomposition of organic matter, and feeding the tail water into biological filtering tank to make secondary biological filtration, and feeding it cotact with ozone and foam separation tank from lower portion of biological filtering tank to make ozonization, then making it flow into the active carbon filtering tank to implement carbon filtration, and feeding the circulating water into the clear water tank, and pumping into dissolved oxygen tower to make oxygenation, then making the circulating water feed into cultivating pool.
Description
The closed circulation cultivation system that the present invention relates to mainly is to be used in industrialized fish culture to support on the shrimp, is that collection chemistry, biology, hydro science, a mechano-electronic are the system engineering of one.
The closed circulation cultivation system that existing domestic many breed units do is mostly with fixed biologically filter tank, disinfection by ultraviolet light (not establishing sterilizing equipment decontaminating apparatus mostly), conventional meanses such as Roots blower oxygenation, and breed variety is based on lower oxygen concentration resistance kinds such as Tilapia mossambica, carps, system's quantity of exchanged water is bigger, energy consumption is also bigger, water quality is in a lower level all the time, purifies water and cultivation density is in a lower level all the time.
Purpose of the present invention is intended to improve above-mentioned deficiency, provide a kind of collect chemistry, biology, hydro science, mechano-electronic be one utilize ozone fluid bed principle, combination oxygen enrichment oxygenation technology is with less investment, improve the closed circulation industry cultivating system of cultivation density and bearing capacity
In order to achieve the above object, the present invention realizes like this, it is by a soakaway trench 2 water intakings, soakaway trench 2 is extended in the layer of sand at water source, by soakaway trench 2 water is stored in the sump 3, by a water intaking pump 4 water is added in the oxygen-dissolving tower 21, establish an oxygen filler 20 on the oxygen-dissolving tower 21, by feed pipe 19 water is added in the breed pond 17, at this moment fish can be thrown in or shrimp is cultured, be characterized in carrying out the separation of residual bait ight soil by the tail water of culturing 18 discharges of pond drainpipe through Microfilter 16, the filter screen mesh of separation is the 80-200 order, and residual bait ight soil is just separated between hydrolysis; The cycle water that filters through Microfilter enters biological contact oxidation pond 15, in biological contact oxidation pond 15, establish aerator 14, it is nitrated to carry out aeration by aerator 14, improve the water body dissolved oxygen by the oxygen increasing machine impeller agitate water, in aerator 14 outsides the gauze bio bag is set or the SNP filtrate carries out the nitrated of organic aerobic decomposition, nitride, and can carries out anaerobic digestion, acidifying and denitrification; Cycle water is after biological contact oxidation pond 15 is handled, flow into biofilter 13 by biological contact oxidation pond top and carry out the two stage biological filtration, adopt gauze bio to carry out biofiltration, 13 the cross-section of river is provided with the 10-18 road along the biofilter, and is nitrated to form---the continuous process of denitrification (denitrogenation); 13 cycle waters of handling through the biofilter, enter the ozone contact by the bottom, biofilter, foam separate tank 9 carries out ozonation treatment, the ozone contact, establish ozone filler pipe 11 in the foam separate tank 9, temperature adjustment water inlet 10, foam discharger 8, procedural style is once adopted on two in ozone contact, carry out the ozone filling by ozone filler pipe 11, the adding amount of ozone is 0.15-0.2mg/L, the pipe of temperature adjustment water inlet 10 stretches into below the water surface of pond, under the drive of current, form negative pressure, mix temperature adjustment water better, above temperature adjustment water inlet 10, establish a ventilation hole, sucking air under the effect of negative pressure is blended in the water, produce bubble greatly, improve the water body dissolved oxygen and can take away more impurity, can produce more foam behind the bubble rising water surface, overflow by foam discharger 8, thereby can purify water better; Cycle water flows out the bottom that enters activated carbon filter 7 by ozone contact, foam separate tank 9 bottoms, activated carbon filtration adopts the method for anti-filter, active carbon adopts the granular pattern of Φ 3-Φ 5 to be contained in 200mm * 300mm purpose nylon net bag, tie mouth, staggered being placed in the activated carbon filter 7, the activated carbon filter height is 500-800mm; The water that is flowed out by activated carbon filter enters clear water reserviors 6, to oxygen-dissolving tower 21, carry out oxygen bath oxygenation through 5 dozens of circulating pumps, above oxygen-dissolving tower 21, establish oxygen filler 20, water sprayering hole 22 is established in oxygen-dissolving tower water inlet pipe 23 terminations, oxygen is from oxygen filler 20 oxygenation inwards, be provided with packing layer in the oxygen-dissolving tower 21, packing layer multiaspect hollow ball or cascade ring, water spills down from oxygen-dissolving tower top water sprayering hole 22, tentatively bathe oxygen, enter packing layer then, carry out gas, liquid, (Gu filler) three-phase exchange dissolved oxygen, oxygen source adopts liquid oxygen, the oxygen enrichment that bottled oxygen or oxygen enricher are produced, the thickness of packing layer is determined according to packing variety, should keep the space about 1 meter more than the packing layer, the water level of oxygen-dissolving tower should be controlled at packing layer and be advisable for following about 0.2 meter, to guarantee that having sufficient space to carry out oxygen bathes.
Cycle water is bathed the back by feed pipe 19 through oxygen-dissolving tower oxygen, flow back into to culture in the pond 17 to reuse, and goes round and begins again like this, thereby has finished the recycling of water.
The closed circulation cultivation system action principle is such, clean when can tentatively reaching water quality through the Microfilter filtration from the tail water of culturing the pond discharge, enter biological contact oxidation pond, can improve the water body dissolved oxygen by the oxygen increasing machine impeller stirring, pernicious gas in the water can be taken away by aeration, the gauze bio bag that is provided with is can reach water filtration to purify, because the filter method of the fluid bed that adopts, the SNP filtrate in water and the water surface constantly move, bubble is had the effect that significantly repeats to cut and bring in the water, thereby the dissolved oxygen in the water is improved, oxygen transfer efficiency increases, Lao Hua mycoderm can in time come off simultaneously, prevents the obstruction of filtrate, has kept the high activity of bacterium.Cycle water flows into the biofilter by biological contact oxidation pond 15 tops and carries out the two stage biological filtration, realizing nitrated---the continuous process of denitrification (denitrogenation), the realization of this process are constantly to reduce by the dissolved oxygen value in the cycle water of the biofilter of flowing through to realize.Ozone adopt ozonization mainly to be because not only can be killed the algae in germ, virus and the former water in the water body, to culturing the harmful soluble heavy metal of object, nitrous acid nitrogen etc. is oxidized to harmless oxide, decomposing hydrogen sulfide, and the filtration of energy fortified water, dissolved oxygen in clarifying effect and the increase water body, and the effect that stimulates the aquaculture organism growth is arranged.Ozone here has been not only above-mentioned effect, because at closed circulation cultivation system, more prior is that ozone is because ozone can be with larger molecular organics to the influence of nitrifying bacteria in the biology bag, resolve into less molecule as fat and protein oxidation, as aldehyde and acid; Adopt ozonation treatment to separate the method that combines with foam, can remove the metal trace element in anhydrating, bacterium, oxidation and separation of organic substances and toxic metabolite material, especially nitrite are stablized carbon effectively.The independent ozone contactor of this effect is not accomplished; Activated carbon filtration adopts the method for anti-filter, does the obstruction that can avoid the filter tank like this, influences the unimpeded of current, prolongs the life cycle in filter tank, and the main effect of activated carbon filtration is the toxicity that is used for eliminating residual ozone, to guarantee the safety of aquaculture organism; Water beaten carry out oxygen to the oxygen-dissolving tower and bathe oxygenation, because of the dissolved oxygen in the breeding water body is the most important condition that aquaculture organism is depended on for existence, it also is one of key of decision output, the dissolved oxygen in water height, water quality easily purifies, pathogenic bacteria are difficult for breeding, the aquaculture organism resistance against diseases is strong, and honey stomach improves and increases meat factor, reduce the consumption of bait and medicine, and can improve breeding density, the filler of establishing in the oxygen-dissolving tower is because of filler has very big specific surface area, make the fully contact on filler of oxygen G﹠W, thereby improved the dissolved oxygen value of water greatly.
Closed circulation cultivation system is a collection chemistry, biology, hydro science, mechano-electronic is the system engineering of one, it is the direction of futurity industry breed, it can carry out Artificial Control to the environment factor of culturing, the interference that not changed by external environment, as red tide, typhoon, cold current etc., the breed object is eaten like a bird in the water environment of the best, look fast, disease is few, quality better, and finished product is as the annual balanced listing of industrial goods, certain regulating action is played in market supply, another distinguishing feature of the present invention is to save the energy, coal,, the saving rate of water all can reach about 30%, is a kind of reasonable closed circulation cultivation system of propagating usefulness at present artificially.
Description of drawings:
Fig. 1 is a closed circulation cultivation system technological process schematic diagram;
Fig. 2 is a closed circulation cultivation system embodiment plane.
The explanation of accompanying drawing drawing:
1 water source, 2 soakaway trenchs, 3 sumps, 4 water intaking pumps, 5 circulating pumps, 6 clear water reserviors, 7 activated carbon filters, 8 foam dischargers, the contact of 9 ozone, foam separate tank, 10 temperature adjustment water inlets, 11 ozone filler pipes, 12 biological bags, 13 biofilters, 14 aerators, 15 biological contact oxidation ponds, 16 Microfilters, 17 culture pond, 18 drainpipes, 19 feed pipes, 20 oxygen fillers, 21 oxygen-dissolving towers, 22 water sprayering holes, 23 oxygen-dissolving tower water inlet pipes.
Sump 3 is water sources of water as a supplement in the closed circulation cultivation system.This part can need not be filtered separately directly as source of water supply in acyclic cultivating system and seedling system, but the dissolved oxygen in the layer of sand water is generally lower, and is comparatively suitable through using after the oxygenation.The borehole wall of sump is the non-fine concrete borehole wall, and manhole is established in the well lid top, and loaded filter is established in the shaft bottom, and it is fine sand that sump is generally built geology in, and a day permeability is 5 meters, and water withdrawal is 500m per hour
3Hole diameter is elected 4 meters as, and the well height is 6.5 meters, grade 500mm in the soakaway trench 2, external diameter 660mm, soakaway trench 2 can be established five (every 40 joint), and loaded filter is pot bottom type in the shaft bottom, from bottom to top be formulated as coarse sand, gravel, water pump suction pipe can be selected 50 meters for use, the water intaking pump can adopt 30 kilowatts of powers of motor, 14 meters of lifts, flow 486m
3/ h, construction method can adopt the drop shaft sinking construction.
Oxygen-dissolving tower 21 bodies of the tower are brick structure, establish an oxygen filler 20 up, oxygen-dissolving tower water inlet pipe 23 is established water sprayering hole 22, water spills down from the water sprayering hole 22 of the water inlet pipe on tower top, enter packing layer then, packing layer can adopt multiaspect hollow ball or cascade ring, and body of the tower can be set as square, also can be designed to circle or rectangle, the water amount of the body of the tower cross-section of river should be chosen in 200m
3.m
2Be advisable about/h, water amount is too big, and dissolved oxygen weak effect, the oxygen source that native system adopted can be the oxygen enrichment that liquid oxygen, bottled oxygen or oxygen enricher are produced.
By feed pipe 19 water is transported to culture in the pond 17 and propagates artificially, breed fish, support shrimp or foster abalone get final product, culture the design in pond and can specifically set according to density, the quantity of culturing, can be according to existing mature technology consideration.
Carry out the separation of residual bait ight soil by culturing the tail water that pond drainpipe 18 discharges through Microfilter 16, adopt 80-200 order stainless steel filtering net, Microfilter can adopt present domestic production.
Cycle water through the Microfilter filtration enters biological contact oxidation pond 15, and this pond is to be become by cement, brick, barnacle, and the dark general 2-3 rice in pond is advisable, and pool area is determined by the biological pollution load of being born, 1 ton of aquaculture organism of general per 1.5 square metres of loads.Aerator 14 adopts fish to use the deep water impeller type, power configuration is about 75 watts of aquaculture organisms per ton, biological bag is made up of two kinds of different forms, a kind of is the gauze bio bag, another kind is the SNP biofilter material, and the gauze bio bag is that the anastomose of net sheet is provided with the filler bundle by a net sheet, four limits of net sheet are provided with the well rope rope, and four angles by the net sheet fixedly are located at the cross-section of river or plane.The gauze bio bag is arranged on aerator 14 outsides, is used to isolate the SNP filtrate, and the SNP filtrate is fluidized state work here.Biofilter material adopts the biological filter bulb of SNP, and by aquaculture organism input 0.75-1.10 cubic meter per ton (look breed variety and determine), the SNP biofilter material is domestic all available.
Cycle water is after biological contact oxidation pond is handled, flow into biofilter 13 by oxidation pond top and carry out the two stage biological filtration, adopt the gauze bio bag to carry out biofiltration, establish the 10-18 road along the cross-section of river of biofilter, aquaculture organism per ton needs 6.5-8 square metre gauze bio bag.
The cycle water of handling through the biofilter, enter the ozone contact by the bottom, biofilter, foam separate tank 9, establish foam discharger 8 on this top, pond, temperature adjustment water inlet 10, above temperature adjustment water inlet 10, establish breather pipe, foam is discharged through discharger 8, and establish an ozone filler pipe 11, extend to the bottom, pond, by ozone filler pipe 11 filling ozone, owing to be cycle water, the accumulation that the residual ozone of trace is gone round and begun again in the circulatory system, can give and culture the biological very big harm that causes, so the adding amount of ozone is a key, the highest adding amount is 0.22mg/L, and 0.15-0.2mg/L just can generally speaking.
Cycle water is entered the bottom of activated carbon filter 7 by ozone contact, foam separate tank 9 bottoms, active carbon adopts Φ 3-Φ 5 granular patterns, be contained in 200mm * 300mm purpose nylon net bag and tie mouth, staggered being placed in the filter tank, the filter tank height generally adopts 500-800mm, because of cycle water is that bottom from activated carbon filter enters, adopt the method for anti-filter, it mainly is the obstruction that to avoid the filter tank, influence the unimpeded of current, prolong the life cycle in filter tank, the main effect of activated carbon filtration is the toxicity that is used for eliminating residual ozone, to guarantee bio-safety.
The water that is flowed out by activated carbon filter enters clear water reserviors 6 to carry out oxygen through 5 dozens of circulating pumps to the oxygen-dissolving tower and bathes oxygenation, bathe oxygenation by oxygen after, be added to pond 17, the work that goes round and begins again like this of culturing through feed pipe 19 again.Water in the sump can replenish the water source at any time by the water intaking pump, and is unimpeded to guarantee cycle water.Only used one to extract water pump among the present invention, a cover circulating pump, the mobile of other parts cycle water is to form certain pressure reduction by design to circulate automatically.The direction of arrow among Fig. 1 is represented water (flow) direction.
Claims (2)
1, a kind of closed circulation cultivation system, it is to fetch water by a soakaway trench (2), soakaway trench (2) is extended in the layer of sand at water source, by soakaway trench (2) water is stored in the sump (3), by a water intaking pump (4) water is added in the oxygen-dissolving tower (21), be added in the breed pond (17) by feed pipe (19), it is characterized in that:
A, the tail water of being discharged by breed pond drainpipe (18) carry out the separation of residual bait ight soil through Microfilter (16), and the filter screen mesh of separation is the 80-200 order, and residual bait ight soil was just separated before hydrolysis;
B, the cycle water that filters through Microfilter enter biological contact oxidation pond (15), in biological contact oxidation pond (15), establish aerator (14), it is nitrated to carry out aeration by aerator (14), improve the water body dissolved oxygen by the oxygen increasing machine impeller agitate water, in aerator (14) outside the gauze bio bag is set or the SNP filtrate carries out the nitrated of organic aerobic decomposition, nitride, and can carries out anaerobic digestion, acidifying and denitrification;
C, cycle water are after biological contact oxidation pond is handled, flow into biofilter (13) by biological contact oxidation pond top and carry out the two stage biological filtration, adopt the gauze bio bag to carry out biofiltration, the cross-section of river of (13) is provided with the 10-18 road along the biofilter, and is nitrated to form---denitrifying continuous process;
D, enter the ozone contact by the bottom, biofilter, foam separate tank (9) carries out ozonation treatment, the ozone contact, establish ozone filler pipe (11) in the foam separate tank (9), temperature adjustment water inlet (10), foam discharger 8, procedural style is once adopted on two in ozone contact, carry out the ozone filling by ozone filler pipe (11), the adding amount of ozone is 0.15-0.2mg/L, the pipe of temperature adjustment water inlet (10) stretches into below the water surface of pond, under the drive of current, form negative pressure, mix temperature adjustment water better, establish a ventilation hole in temperature adjustment water inlet (10) top, under the effect of negative pressure, suck air and be blended in the water, produce a large amount of foams and overflow by foam discharger (8);
E, cycle water flow out the bottom that enters activated carbon filter (7) by ozone contact, foam separate tank (9) bottom, activated carbon filtration adopts the method for anti-filter, active carbon adopts the granular pattern of Φ 3-Φ 5 to be contained in 200mm * 300mm20 purpose nylon net bag, tie mouth, staggered being placed in the activated carbon filter (7), activated carbon filter (7) highly is 500-800mm;
F, the water that is flowed out by activated carbon filter enter clear water reserviors (6), beat through circulating pump (5) and to carry out oxygen to the oxygen-dissolving tower (21) and bathe oxygenation, establish oxygen filler (20) in oxygen-dissolving tower (21) top, oxygen-dissolving tower water inlet pipe (23) is established water sprayering hole (22), and oxygen is from oxygen filler (20) oxygenation inwards, and oxygen-dissolving tower is provided with packing layer in (21), water spills down from oxygen-dissolving tower top water sprayering hole (22), tentatively bathe oxygen, enter packing layer then, carry out gas, liquid, solid three-phase exchange dissolved oxygen;
G, cycle water flow back into repeated use in the breed pond (17) by feed pipe (19) after bathing through oxygen-dissolving tower oxygen, go round and begin again like this, thereby have finished the recycling of water.
2, by the described closed circulation cultivation system of claim 1, it is characterized in that the packing layer established in the oxygen-dissolving tower (21), the above space of packing layer also will keep about 1 meter, and the peak level in the oxygen-dissolving tower should be controlled at packing layer and be advisable for following about 0.2 meter, to guarantee that having sufficient space to carry out oxygen bathes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110480A CN1120658C (en) | 1998-09-23 | 1998-09-23 | Closed circulation cultivation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110480A CN1120658C (en) | 1998-09-23 | 1998-09-23 | Closed circulation cultivation system |
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| CN1248398A true CN1248398A (en) | 2000-03-29 |
| CN1120658C CN1120658C (en) | 2003-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN98110480A Expired - Fee Related CN1120658C (en) | 1998-09-23 | 1998-09-23 | Closed circulation cultivation system |
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| CN100346691C (en) * | 2001-09-12 | 2007-11-07 | 卡明斯科普有限公司 | Aquaculture system |
| CN100350997C (en) * | 2005-10-12 | 2007-11-28 | 中国科学院海洋研究所 | Process and apparatus for removing superfine suspension from water used to culture seedling in sea water |
| CN100429163C (en) * | 2005-09-12 | 2008-10-29 | 中国科学院生态环境研究中心 | Dispersed spot source sewage treating and grading reusing system and its operation process |
| CN100435629C (en) * | 2005-09-01 | 2008-11-26 | 牟秀元 | Biological feedstuff, fish, shrimp and crab seedling circular biological breeding apparatus |
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| CN105692969A (en) * | 2016-01-11 | 2016-06-22 | 毛明艳 | Circulating water treatment method of seawater for cultivation and device thereof |
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| CN105850838A (en) * | 2016-03-30 | 2016-08-17 | 苏州市相城区阳澄湖镇益丰生态养殖专业合作社 | Highly-efficient circulating water environment-friendly culture system |
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| CN108328848A (en) * | 2017-01-20 | 2018-07-27 | 林群超 | The return-to-zero method of cultivation water |
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