CN107651766A - A kind of deep sea water simulation water quality is used for the method for deep-sea mariculture - Google Patents
A kind of deep sea water simulation water quality is used for the method for deep-sea mariculture Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000013535 sea water Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009364 mariculture Methods 0.000 title claims abstract description 15
- 238000004088 simulation Methods 0.000 title claims abstract description 15
- 238000001728 nano-filtration Methods 0.000 claims abstract description 21
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 24
- 238000009287 sand filtration Methods 0.000 claims description 12
- 241000927735 Penaeus Species 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
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- 235000012489 doughnuts Nutrition 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000009313 farming Methods 0.000 abstract description 6
- 238000011033 desalting Methods 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 description 15
- 241000238557 Decapoda Species 0.000 description 13
- 230000004083 survival effect Effects 0.000 description 12
- 241000133262 Nauplius Species 0.000 description 11
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- 238000011161 development Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 8
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- 238000002360 preparation method Methods 0.000 description 5
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007728 cost analysis Methods 0.000 description 1
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- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 229910052749 magnesium Inorganic materials 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
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- 230000001954 sterilising effect Effects 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
-
- 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
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Marine Sciences & Fisheries (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to field of sea water desalting technology, and method of the water quality for deep-sea mariculture is simulated more particularly, to a kind of deep sea water, including：The shallow sea water of 5 ‰ 20 ‰ Low-salinities, sub- seawater or seabeach phreatic water are pre-processed as raw water and by the haze reduction in raw water to 1 below ppm, raw water after pretreatment handles to obtain nanofiltration production water through nanofiltration, and the concentrated water for the class depth seawater quality that nanofiltration production water obtains 28 ‰ 36 ‰ after reverse-osmosis treated is used to cultivate the marine organisms under the pelagic environment of deep-sea.A kind of deep sea water simulation water quality provided by the present invention is used for the method for deep-sea mariculture, the influence of such as heavy rain, red tide, typhoon natural calamity can be greatly avoided, so as to no longer live at the mercy of the elements.In addition, this method can also decrease below limitation so that sea-farming promotes to be possible toward inland.
Description
Technical field
The invention belongs to field of sea water desalting technology, is used for deep-sea ocean more particularly, to a kind of deep sea water simulation water quality
The method of biological cultivation.
Background technology
As world population expands, economy rapid development, shortage of water resources increasingly sharpens to the crisis that the mankind bring.The earth
Shanghai ocean surface product accounts for more than the 75% of the earth gross area, and seawater resources are abundant, however, the fresh water that actually can be used directly
Resource but only accounts for the 0.77% of all water resources, therefore, desalt processing is carried out to seawater to meet the needs of mankind are to fresh water tool
Emerging technology significant, that desalination technology exactly grows up in this context.
However, people are extracted using sea water desalinating unit after the fresh water in seawater, salinity has all been trapped by-product
Among thing-concentrated water, the concentrated water of this part often directly flows back to big marine, causes serious waste.According to the literature, every 1
Ton seawater will discharge about 0.62 ton or so of concentrated seawater after desalinization.Therefore, it is necessary to after to the desalinization
Concentrated seawater is reasonably utilized.
The content of the invention
It is an object of the present invention to for problem present in background technology, there is provided a kind of deep sea water simulation water quality is used
In the method for deep-sea mariculture.
Therefore, the above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of deep sea water simulation water quality is used for the method for deep-sea mariculture, and the deep sea water simulation water quality is used
Include in the method for deep-sea mariculture：Using the shallow sea water, sub- seawater or seabeach phreatic water of 5 ‰ -20 ‰ Low-salinities as
Raw water is pre-processed and by the haze reduction in raw water to below 1ppm, and raw water after pretreatment is handled through nanofiltration to be received
Filter production water, the concentrated water for the class depth seawater quality that nanofiltration production water obtains 28 ‰ -36 ‰ after reverse-osmosis treated are remote for cultivating deep-sea
Marine organisms under foreign environment.
While using above-mentioned technical proposal, the present invention can also be used or combined using technology further below
Scheme：
Pretreatment includes precipitation and sand filtration；Precipitate for shallow sea water, sub- seawater or seabeach phreatic water to be precipitated and disappeared
Poison processing and by its haze reduction to below 10ppm；Sand filtration uses sand filtering device, and three layers of quartz sand, stone are set in sand filtering device
The top-down diameter distribution of sand is respectively 0.4~0.6mm, 0.6~1.6mm and 2~4mm, and sand filtration removes outstanding in raw water
Float and colloidal substance, reduce SS indexs and by haze reduction to below 1ppm.Suspension (suspended solids) refers to outstanding
Float over the solid matter in water, including inorganic matter insoluble in water, organic matter and silt particle, clay, microorganism etc..Suspended in water
Thing content is one of index for weighing water pollution degree.
Flocculant, coagulant, flocculation aid and bactericide are not added in precipitation and sand filtration.
The operating pressure of nanofiltration membrane component is 0.8~2.0Mpa in nanofiltration, nanofiltration membrane component be board-like, rolling, tubular type or
Hollow fiber form, the material of nanofiltration membrane component is cellulose acetate or aromatic polyamide or polyether sulfone or poly- fluoropolymer；Instead
The operating pressure of reverse osmosis membrane assembly is 2.0~6.0Mpa in infiltration, and reverse osmosis membrane assembly is board-like, rolling, tubular type or hollow
Fiber type, material are cellulose acetate film or PA membrane or polyhydrazide film, and reverse osmosis membrane surface in reverse osmosis membrane assembly
Micro-pore diameter is 0.5~10nm.
Reverse osmosis membrane is rolling polyamide composite film in NF membrane and counter-infiltration in nanofiltration.
The marine organisms include Penaeus Vannmei and sea cucumber.
A kind of deep sea water simulation water quality provided by the present invention is used for the method for deep-sea mariculture, can be very big
Ground avoids the influence of such as heavy rain, red tide, typhoon natural calamity, so as to no longer live at the mercy of the elements.In addition, this method can also be reduced
Less than limitation so that sea-farming promotes to be possible toward inland.
Specifically, the present invention has following advantage：
(1) compared with the processing method of current ordinary sea water desalination system
At present, what seawater desalination system generally utilized is its production water, and the strategy that caused concentrated water is directly discharged, and is caused
The serious wasting of resources.However, often heavy metals exceeding standard, hardness are exceeded for concentrated water caused by common seawater desalination system, it is impossible to
Reach the requirement of seawater living cultivation.Method provided by the invention introduces pretreatment process of the nanofiltration as reverse osmosis concentration, removes
Valence heavy metal ions are gone, calcium and magnesium concentration is reduced, enters counter-infiltration and concentrated, enable to reach sea-farming, the utilization of resources
More reasonably purpose.
(2) compared with the processing method of crude salt is added in current fresh water
Because sea-farming aquatic products survival rate, the common freshwater aquiculture aquatic products of mass ratio are higher, build is also bigger, and meat is also more
Consolidation, there is obvious advantage.To reach water quality requirement, peasant household's widespread practice is exactly into fresh water or Low-salinity seawater at present
Addition crude salt, but the effect promoting and unobvious of method cultivation, and cost is higher.
(3) compared with transporting seawater method with abyssopelagic
Most directly simple output seawater method, is to obtain seawater to deep-sea using large transport ship.The method is short-term apparently
Simple and easy, feasibility is high, but from long term growth, the method can not only exempt the influence of natural calamity, such as typhoon, cruelly
Rain etc., and required because Offshore Waters do not meet cultivation, the increase of cost of transportation will be caused.Most of all, because cultivation is used
Water necessarily requires water source continuously to supply, water stabilization, and middle link error will fall short of success for lack of final effort, and suffer heavy losses.Compare and
Speech, method provided by the invention can effectively reduce water producing cost, in the long run, more energy efficient environmental protection.
In addition, fresh water produced by the invention can be used for domestic water, freshwater aquiculture biology water and its moisturizing etc., or even can
To prepare raw water as the ultra-pure water needed for electronics industry.
Embodiment
The present invention is described in further detail with reference to specific embodiment.
Using the seawater, sub- seawater or seabeach phreatic water of 5 ‰ -20 ‰ Low-salinities as the raw water of desalinization, by with
Lower step output salinity reaches 28 ‰ -36 ‰ class depth seawater quality：
(1) precipitate
Using sedimentation basin, for the seawater taken, sub- seawater or seabeach phreatic water etc. to be carried out into simple precipitation, sterilization,
Raw water turbidity is reduced to below 10ppm.
(2) sand filtration
Sand Filtration System, for removing suspension and colloidal substance in the water after (1) precipitation process, reduce SS and refer to
Mark, turbidity index are reduced to below 1ppm.
(3) nanofiltration
Nanofiltration system, for carrying out desalting processing to the water outlet after (2) sand filtration processing, hardness, basicity are reduced, is removed
Contained larger molecular organicses, bacterium etc. in raw water, remove the small organic molecules such as ammonia nitrogen.
(4) counter-infiltration
Counter-infiltration, the production water after (3) nanofiltration processing is concentrated and separated by system, for output concentrated water and light
Water, concentrated water are used to cultivating marine organisms under deep-sea pelagic environment of the salinity more than 35.5 ‰, production water be used for plant area's domestic water,
Freshwater aquiculture biology water and its moisturizing etc..
In the present embodiment, NF membrane is rolling polyamide composite film, and the operating pressure of NF membrane is 0.8~2.0Mpa.
In the present embodiment, reverse osmosis membrane is rolling polyamide composite film, the operating pressure of reverse osmosis membrane for 2.0~
6.0Mpa。
In precipitation and sand filtration, flocculant, coagulant, flocculation aid and bactericide are not added.
Concentrated water caused by counter-infiltration is used to cultivate the mariculture under deep-sea pelagic environment of the salinity more than 35.5 ‰,
Such as Penaeus Vannmei, sea cucumber.
Embodiment 1
Determine raw water, the water quality index of concentrated water and contrast.It is raw water life to utilize by 17 ‰ seabeach phreatic water of salt content
The seawater water used for aquiculture that salt content is 30 ‰ is produced, determining former phreatic water water quality is：Salinity is 17 ‰, pH 7.55, Ca2+It is dense
Spend for 640ppm, Mg2+Concentration is 460ppm, total alkalinity 85ppm, ammonia nitrogen concentration 0.06ppm.Determine final output concentrated water water
Matter is：Salinity is 30 ‰, pH 8.05, Ca2+Concentration is 340ppm, Mg2+Concentration is 995ppm, total alkalinity 120ppm, ammonia nitrogen
Concentration is 0.06ppm.Its result and the natural sea-water water quality index that salt content is 35 ‰ are very close.
Penaeus Vannmei shrimp seedling is cultivated using the concentrated water of preparation, it is (big first with dissolved oxygen enough in aeration holding water body
In 5ppm), illumination control is thrown in below 500Lx, water temperature by 28 DEG C of nauplius stage be gradually increased to young shrimp initial stage 32 DEG C
The agreeable to the taste bait such as algae powder, prawn slice are fed, it is about 86.8% to measure from the abnormal survival rate to phase zoea of nauplius development, from
The abnormal survival rate to phase zoea of nauplius development is 84.6%.
Comparative example 1
Low-salinity sea water simulation cultivation water is added to using crude salt, water quality is determined and contrasts.Utilize using salt content as 17 ‰
Seabeach phreatic water be raw material, crude salt is added into wherein, and prepare salt content be 30 ‰ seawater water used for aquiculture, measure
Former phreatic water water quality is：Salinity is 17 ‰, pH 7.55, Ca2+Concentration is 640ppm, Mg2+Concentration is 460ppm, and total alkalinity is
85ppm, ammonia nitrogen concentration 0.06ppm.Determining final output concentrated water water quality is：Salinity is 30 ‰, pH 8.15, Ca2+Concentration is
680ppm, Mg2+Concentration is 450ppm, total alkalinity 189ppm, ammonia nitrogen concentration 0.10ppm.
Using crude salt+sea-farming Penaeus Vannmei shrimp seedling of preparation, dissolving enough in water body is kept first with aeration
Oxygen (is more than 5ppm), and illumination control is gradually increased to the 32 of young shrimp initial stage in below 500Lx, water temperature by 28 DEG C of nauplius stage
DEG C, the agreeable to the taste bait such as algae powder, prawn slice is fed, measures from the abnormal survival rate to phase zoea of nauplius development and is about
42.5%, it is 21.5% from the abnormal survival rate to phase zoea of nauplius development.
Comparative example 2
Water law is transported using deep-sea, its water quality is determined and contrasts.The seawater that deep-sea is transported, water quality is that salinity is that 30 ‰, pH is
8.10 Ca2+Concentration is 360ppm, Mg2+Concentration is 1108ppm, total alkalinity 160ppm, ammonia nitrogen concentration 0.06ppm.
Water law, deep-sea raw water cultivation Penaeus Vannmei shrimp seedling are transported using deep-sea.Water law, the cultivation of deep-sea raw water are transported using deep-sea
Penaeus Vannmei shrimp seedling, enough dissolved oxygen (being more than 5ppm) in water body is kept first with aeration, illumination control 500Lx with
Under, water temperature is fed the agreeable to the taste bait such as algae powder, prawn slice, surveyed by 28 DEG C of nauplius stage be gradually increased to young shrimp initial stage 32 DEG C
It is about 91.2% to obtain from the abnormal survival rate to phase zoea of nauplius development, abnormal to phase flea shape from nauplius development
The survival rate of the young is 87.7%.
Penaeus Vannmei shrimp seedling is bred under same environmental conditions, utilizes 30 ‰ seawater aquaculture of output of the present invention
With water compared with crude salt+Low-salinity sea water version, about 44.3% is improved from the abnormal survival rate to phase zoea of nauplius development
(absolute value), 104.2% (relative value), about 63.1% is improved from the abnormal survival rate to phase zoea of nauplius development
(absolute value), 293.5% (relative value).
1 three kinds of water body cost analysis tables of table①
Note：1. this table by 30 ton hours, 720 ton days water supply in terms of.
2. crude salt expense is according to 300 yuan/ton of meters of existing market price.
3. power consumption is counted according to 0.6 yuan/degree of farming power.
4. fresh water market value is based on 2.2 yuan/ton of fresh water.
5. the final breeding water yield that the present invention prepares is 30 ton hours, equipment total price input is 3,600,000 yuan, wherein
Apparatus value is 2,800,000, and the depreciable life counted according to 20 years, and NF membrane, the total value of reverse osmosis membrane are 800,000 yuan in equipment, depreciation
The time limit was counted according to 6 years, was calculated according to annual using 330 days, daily equipment depreciation expense is 828.3 yuan/day.
In terms of economy, cost etc. needed for three of the above water body is analyzed, as shown in table 1.
Table 1 shows that operating cost of the invention is concentrated mainly in power consumption and equipment depreciation, and operation total cost is
2124.3 yuan/day, less than yuan/day of crude salt preparation method 2808, hence it is evident that transport yuan/day of water law 32400 less than deep-sea.
Contrast crude salt preparation method：It is real according to contrast although needing early stage of the invention to invest about 3,600,000 yuan of cost of equipment
Apply described in example 2, the present invention has higher shrimp seedling survival rate, and the economic value of this part is inestimable.
Contrast crude salt preparation method：Although need early stage of the invention to invest about 3,600,000 yuan of cost of equipment, daily about
2124.3 yuan of operating cost is the 6.6% of the deep-sea fortune daily 32400 yuan of operating costs of water law.It is computed, of the invention sets
Standby investment cost can be earned compared to deep-sea fortune water law at about 120 days or so.In addition, difference of the shrimp seedling survival rate compared with deep-sea fortune water law
Less, there is higher survival rate.
Above-mentioned embodiment is used for illustrating the present invention, only the preferred embodiments of the present invention, rather than to this
Invention is limited, and in the protection domain of spirit and claims of the present invention, to any modification of the invention made, is equal
Replace, improve etc., both fall within protection scope of the present invention.
Claims (5)
1. a kind of deep sea water simulation water quality is used for the method for deep-sea mariculture, it is characterised in that the deep sea water
The method that simulation water quality is used for deep-sea mariculture includes：Shallow sea water, sub- seawater or seabeach phreatic water are entered as raw water
Row pre-processes and by the haze reduction in raw water to 1 below ppm, and raw water after pretreatment handles to obtain nanofiltration production through nanofiltration
Water, the concentrated water that nanofiltration production water obtains after reverse-osmosis treated are used to cultivate the marine organisms under the pelagic environment of deep-sea.
2. deep sea water simulation water quality according to claim 1 is used for the method for deep-sea mariculture, its feature exists
In pretreatment includes precipitation and sand filtration；Precipitate for shallow sea water, sub- seawater or seabeach phreatic water to be precipitated and disinfected
And by its haze reduction to 10 below ppm；Sand filtration uses sand filtering device, three layers of quartz sand is set in sand filtering device, quartz sand is certainly
Upper and lower diameter distribution is respectively 0.4 ~ 0.6 mm, 0.6 ~ 1.6 mm and 2 ~ 4 mm, sand filtration remove suspension in raw water with
Colloidal substance, reduce SS indexs and by haze reduction to 1 below ppm.
3. deep sea water simulation water quality according to claim 2 is used for the method for deep-sea mariculture, its feature exists
In, precipitation and sand filtration in do not add flocculant, coagulant, flocculation aid and bactericide.
4. deep sea water simulation water quality according to claim 1 is used for the method for deep-sea mariculture, its feature exists
In the operating pressure of nanofiltration membrane component is 0.8 ~ 2.0 Mpa in nanofiltration, and nanofiltration membrane component is board-like, rolling, tubular type or hollow fibre
Dimension formula, the material of nanofiltration membrane component is cellulose acetate or aromatic polyamide or polyether sulfone or poly- fluoropolymer；In counter-infiltration
The operating pressure of reverse osmosis membrane assembly is 2.0 ~ 6.0 Mpa, and reverse osmosis membrane assembly is board-like, rolling, tubular type or doughnut
Formula, material are cellulose acetate film or PA membrane or polyhydrazide film, and in reverse osmosis membrane assembly reverse osmosis membrane surface micropore
A diameter of 0.5 ~ 10 nm.
5. deep sea water simulation water quality according to claim 1 is used for the method for deep-sea mariculture, its feature exists
In the marine organisms include Penaeus Vannmei and sea cucumber.
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