CN106085866A - A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae - Google Patents
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae Download PDFInfo
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Abstract
The invention discloses a kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae.The method is to will not pass through coal-burning power plant's discharge flue gas of pretreatment, in flue gas supply unit is passed into both culturing microalgae unit, controls to be suitable for the algae solution pH value of micro algae growth by adjusting flue gas intake, it is achieved the large-scale farming of microalgae.The present invention can be greatly improved the controllability cultivating parameter in the open breeding process of microalgae, reduce occurrence frequency and the difficulty of governance of various pollutions during microalgae large-scale farming, realize the efficient growth of microalgae, and the cost that simultaneously can be substantially reduced large-scale production puts into.
Description
Technical field
The present invention relates to agricultural breeding field, the method particularly relating to large-scale farming microalgae.
Background technology
Large-scale cultivation microalgae absorbs CO in coal-fired flue-gas2Carry out biological sequestration and harvesting microalgae biomass, be international
CO2Reduce discharging the forward position study hotspot with new energy development field and high-tech focus of the competition.The U.S., the flourishing state such as European and Japanese
Family has put into substantial contribution and has actively developed this research.Owing to microalgae conversion solar can be up to 2-for the quantum efficiency of biomass energy
10% (and the quantum efficiency of terrestrial plant is both less than 1%), and micro algae growth speed is exceedingly fast, and (every day, the increment of biomass could
Reach 1-3 times), therefore utilize microalgae photosynthesis to absorb a large amount of CO2Tap a new source of energy and there is outstanding advantage.Cultivating microalgae absorbs electricity
The flue gas technology of factory's discharge also has a lot of trial, but all concentrates on the indoor bench-scale testing stage, and emphasis is all for greatly
Scale absorbs CO2Aspect, compositions various for flue gas are fewer to the Effect study of microalgae, generally believe that flue gas is not suitable for directly
Connect cultivating microalgae, need the purification through technical sophistication.And the technology of China's large-scale farming microalgae is also in the most extensive
Technological phase, or traditional agriculture cultivates the breeding way of formula, and production efficiency is very low, and existing many is supported for microalgae
The invention of the technological invention grown, particularly bioreactor, it is desirable to investment of production the biggest, except indivedual economic worths
Outside extra high microalgae can be applied, general microalgae cannot be applied.The current business-like major obstacle of microalgae is still thus
Efficiency and cost, core technology bottleneck is algae kind and large-scale cultivation technology.Existing microalgae, when large-scale culture, cultivates effect
Also there is a big difference from heavy industrialization application for rate, antipollution and low cost cultivation aspect.
Heavy industrialization cultivating microalgae direct for flue gas or technological gap the most in the world, this technological invention is direct
Start with from this, develop the state-of-the-art technology directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae, find that flue gas is supported
Grow microalgae to be possible not only to be greatly improved the controllability cultivating parameter in the open breeding process of microalgae, it is achieved microalgae efficient growth, fall
The occurrence frequency of various pollutions and difficulty of governance during low microalgae large-scale farming, and can be substantially reduced extensive raw simultaneously
The cost produced puts into, and makes overall the entrance from traditional agriculture breeding way of cultural technique of microalgae modernize industry cultural technique, and
And to CO2Reduction of discharging and the deep purifying of flue gas have positive role.
Summary of the invention
The technical problem to be solved in the present invention there is provided one and directly utilizes coal-burning power plant's discharge flue gas large-scale farming
The method of microalgae.The method achieve microalgae efficient growth, the generation of various pollutions during reducing microalgae large-scale farming
Frequency and difficulty of governance, and the cost input of large-scale production can be substantially reduced simultaneously.
Of the present invention a kind of directly utilize coal-burning power plant discharge flue gas large-scale farming microalgae method, be by without
Cross coal-burning power plant's discharge flue gas of pretreatment, in flue gas supply unit is passed into both culturing microalgae unit, by adjusting flue gas
Intake controls algae solution pH value, it is ensured that within the culture-cycle, pH value is in the pH value range of applicable micro algae growth, culture-cycle
After end, obtain, by results unit, the microalgae cultivated；
When pH value is less than the pH value range of applicable micro algae growth, reduce flue gas intake until algae solution pH value reaches applicable
The pH value range of micro algae growth；When pH value is higher than when being suitable for the pH value range of micro algae growth, strengthen flue gas intake until algae solution
PH value reaches to be suitable for the pH value range of micro algae growth；
The described culture-cycle is 5～10 days.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae of the present invention, wherein said
Flue gas supply unit include flue gas blower fan, flue gas main pipeline, flue gas bypass line, bypass line electrically operated valve, branched pipe, point
Arm manually-operated gate, drain valve, smoke distributor, smoke distributor manually-operated gate；Both culturing microalgae unit include micro-algae culture pond,
Paddle wheel；Results unit includes centrifuge；
Described flue gas enters flue gas main pipeline through flue gas blower fan, enters back into bypass line, is distributed to respectively through bypass line
Culturing pool；Bypass line is provided with electrically operated valve and controls flue gas conveying, and sets 8～10 branched pipes and be fixed on culturing pool pool wall；Point
Arm connects smoke distributor, and each branched pipe sets manually-operated gate and controls flue gas conveying, and branched pipe end sets drain valve；Each cigarette
Edema caused by disorder of QI orchestration stretches into culturing pool, and is provided with manually-operated gate；
Described flue gas main pipeline is layed on ground；Culturing pool is positioned at the both sides of flue gas main pipeline；
Described branched pipe is spaced apart 2～2.5m, and every branched pipe connects 1 smoke distributor, allotter from the bottom of pond 0～
5cm；
The material of described smoke distributor is corrosion-resistant PE pipe or corrosion-resistant PPR pipe；Its material density is close more than sea water
Degree；Specification is length 1.5～2m, bore 1～2.5cm, wall thickness 2.5mm, solarization air cap aperture 0.8～2.0mm；Every centimetre of distribution
Device average laser punches 5；
Described micro-algae culture pond is open raceway pond, including warmhouse booth culturing pool and outdoor breeding pond；Warmhouse booth
The floor space specification of culturing pool includes 8.6m2、18.6m2、34m2、82m2、153m2、324m2；The floor space specification in outdoor breeding pond
Including 600m2And 1000m2；
The body of wall of described open raceway pond is built into by cement；Paver is elastic polyethylene material (FPO) and random
One in COPP (PPR) or a combination thereof；Use elastic polyethylene material (FPO) and atactic copolymerized polypropene
(PPR) a kind of or a combination thereof in carries out both culturing microalgae as the paver of open raceway pond, heavy metal in microalgae cell
The content of Pb, Cd, Hg and As is respectively as follows:
Pb: < 2ppm,
Cd: < 0.2ppm,
Hg: < 0.05ppm
As: < 0.5ppm.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae of the present invention, wherein said
Flue gas intake can be controlled by smoke distributor manually-operated gate；
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae of the present invention, wherein coal-fired
After power-plant flue gas may also pass through simple pretreatment, then it is passed in micro-algae culture pond；Described pretreatment mode includes fire coal
The condensation of power plant emission flue gas.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae of the present invention, is wherein suitable for
The algae solution pH value of micro algae growth is 4.0～10.0；Wherein, the algae solution pH value of suitable Nannochloropsis sp growth is 5.5～8.5；Suitable
Preferably the algae solution pH value of Dunaliella salina growth is 7.0～9.0；The algae solution pH value of suitable Nannochloropsis oceanica growth is 5.5～8.5；Suitable
Preferably the algae solution pH value of Skeletonema Costatum growth is 7.0～8.0；Algae solution PH of suitable Growth of Platymonas Spp is 7.5～8.5.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae of the present invention, wherein passes through
The regulation of algae solution pH value, can control miscellaneous algae pollution and protozoacide is polluted；
Described miscellaneous algae pollution includes but not limited to that cyanophyceae pollutes, unarmored dinoflagellate pollutes；
When temperature is higher than 25 DEG C, algae solution pH value is controlled 5.0～7.0, cyanophyceae can be controlled and pollute；
Algae solution pH value is controlled 4.0～5.0, keep 24～48 hours, unarmored dinoflagellate can be controlled and pollute；
Night is passed through flue gas, is controlled by algae solution pH value 3.5～5.0, can control protozoacide and pollute.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae of the present invention, wherein microalgae
Cultivation kind include in Cyanophyta, Chrysophyta, Xanthophyta, Bacillariophyta, Pyrrhophyta, Cryptophyta, Euglenophyta, Chlorophyta any
The combination of one or more than one.
The cultivation of microalgae is from the beginning of indoor breeding chamber, and indoor use pure carbon dioxide is cultivated, and indoor maximum cultivates body
Amassing as 200L, carry out expanding species when transferring to warmhouse booth after indoor both culturing microalgae to certain volume, warmhouse booth is provided with 6 kinds of specifications
Culturing pool, the floor space of culturing pool is respectively 8.6m2、18.6m2、34m2、82m2、153m2、324m2, the floor space of culturing pool
Substantially in multiplication state, the expansion cultivation being so provided with in beneficially cultivation.
It is pool cultivated that warmhouse booth is transferred to outdoor breeding after cultivating certain volume, and outdoor breeding has 600m2And 1000m2Two
Plant specification.Culturing pool has the most corresponding different cultivation of culture medium supply line, flue, results pipeline, drain pipeline to need
Ask, and be equipped with paddle wheel agitation cultivation frond.Cultivate culturing pool specification that different algae uses and differ, as Dunaliella salina because of
Can move about for amphitrichous own, culturing pool can select bigger, and Skeletonema Costatum makes more greatly without flagellum and frond
More suitable with the culturing pool of small dimension.
Different algaes has the different culture-cycles, according to the frustule concentration of cultivation initial in cultivation with suitably cultivate factory and join
The concentration of standby centrifuge results determines.In general the both culturing microalgae cycle is all at about 5-10 days, Various Seasonal and
Temperature can change, and is primarily upon the growth of algae dry weight in both culturing microalgae, and a general culture-cycle dry weight to be guaranteed increases
More than one times.When culturing pool Middle nutrition salt exhausts, dry weight increases enough, when in culturing pool, microalgae quantity is suitable for centrifuge results
Starting results, results can be taked all to gather in the crops the mode the most again cultivated, it is possible to takes results part again to add culture medium again
Carry out the mode cultivated.
The technological core of the present invention is fume emission condition based on current international standard, will not pass through pretreatment or warp
Cross coal-burning power plant's discharge flue gas of simple pretreatment by adjusting flue gas intake, it is achieved flue gas produces at microalgae large-scale farming
In comprehensive utilization, have the highest using value.
The body of wall of the open raceway pond in the present invention is built into cement, and is screened the material laying raceway pond.
Test mainly for elastic polyethylene material (FPO), polrvinyl chloride (PVC), TPO (TPO1 and TPO2) and randomly
Five kinds of materials such as COPP (PPR) carry out heavy metal release research, and final FPO and PPR of confirmation supports for food stage microalgae
It is safe for growing requirement.As raceway pond paver cultivating microalgae most preferably FPO and PPR, micro-during use both materials
In frustule, heavy metal Pb, the content of Cd, Hg and As are substantially all the national standard (GB/ that can reach spirulina food level
T16919-1997) (Pb < 2ppm, Cd < 0.2ppm, Hg < 0.05ppm, As < 0.5ppm).Cultivate by TPO1 and PVC waterproof material
Microalgae in the comparision contents of heavy metal Pb high, be 1.25 times and 3.29 times with FPO cultivation respectively, with PPR cultivation
1.30 times and 3.41 times, the content of heavy metal Pb in the microalgae of TPO1 and PVC cultivation is therefore used to exceed spirulina food level
National standard.The highest with the content of As and Pb in the microalgae of TPO2 material cultivation, wherein the content of As be with FPO and
1.84 times and 1.79 times of PPR cultivation, the content of Pb is 12.32 times and 12.78 times with FPO and PPR cultivation.Lay raceway pond
Five kinds of membrane materials accompanying drawing 1 is shown in the impact of microalgae enriching heavy metal.
Through contrast, the content of four heavy metal species in the microalgae of FPO and PPR material-paving raceway pond cultivation is used to reach
To the national standard of spirulina food level, use the content of heavy metal Cd in the microalgae of TPO1 material higher, use PVC material
In microalgae, the content of heavy metal Pb is higher, use TPO2 material microalgae in heavy metal As, Cd and Pb content the most higher.
Smoke distributor simple in construction in the present invention, little to the pressure requirements of blower fan, invest little, cleaned and changed letter
Just, installing Relatively centralized and be beneficial to construction, gas output is big, it is possible to ensure be passed through in culturing pool and dissolve enough flue gases.
Main component in the flue gas of power plant emission is CO2、SO2、NOX, CO, dust etc..The present invention is found through experiments,
It is passed through flue gas and makes algae solution is dissolved CO2When reaching to meet major part microalgae compared with the 2mmol/L of Seedling height speed needs, in flue gas
SO2Dissolubility is the highest, reaches more than 60%；NOXDissolubility smaller, only about 25%；CO dissolubility is the least, weight
Metal, the content of dust and meltage are less, little to the growth effect of microalgae.NO in flue gasXFor nitrate nitrogen and nitrite nitrogen,
Nitrate nitrogen directly can be absorbed, by microalgae, the nitrogen source providing a small amount of, and nitrite nitrogen can also partly turn under the effect of antibacterial
Turn to nitrate nitrogen absorbed, therefore present invention discover that SO in flue gas2Concentration finally determine whether flue gas is used directly for
The heavy industrialization cultivation of microalgae, and it is found that SO2The concentration impact on both culturing microalgae.
The present invention studies discovery: in extensive microalgae industryization cultivates, in general SO in flue gas2Control
428.6mg/Nm3(150ppm) below, by controlling the mode that is passed through and the intake of flue gas, artificial to current most microalgae
Cultivate without negative effect.And domestic flue gas SO2The standard of discharge is 100mg/Nm3, so complying fully with microalgae large-scale industry
Change the demand of cultivation, and some micro algae growth needs certain density SO4 -2(e.g., certain density SO4 -2Du can be promoted
The cell division of family name's salt alga, improves the speed of growth).
Large-scale open raceway pond both culturing microalgae is the most most economical breeding way.It is characterized in cultivating volume relatively
Greatly, the parameter controllability of cultivation system is far below with indoor small size cultivation system, and therefore the production efficiency of large-scale farming is remote
Little system cultivation less than indoor artificial environment completely.And present invention discover that the intake by controlling flue gas, it is possible not only to reality
Existing pH and dissolving CO2Effective control, it is also possible to realize the effect prevented and remedied pollution.
The flue gas method of salary distribution and allotter determine CO in the amount of the flue gas being passed through in algae solution and algae solution2The amount dissolved.This
The fume treatment mode of invention makes to utilize flue gas large-scale culturing micro-algae to be suitably applied current almost all of microalgae.In algae solution
The amount that flue gas is passed through depends on algae type, cultivating condition (sea water or fresh water), temperature, upgrowth situation etc..When factors above becomes
During change, flue gas intake also needs to change therewith.
Flue gas can be done pretreatment for the requirement of Various Seasonal and different algae kind by the present invention, makes flue gas can be more suitable for microalgae
To CO in growth2Demand.The mode of pretreatment is the condensation to flue gas, to control to be passed through SO in algae solution2Amount, in order to be passed through
More flue gas.
Additionally, the time that is passed through of flue gas should coordinate sunrise, sunset time, and it is passed through the time according to the needs adjustment of cultivation
Control the cultivation parameter of algae solution.In traditional cultivation, the most more advanced breeding way is to be passed through pure gas CO2, and to dividing
The requirement of orchestration is extremely strict, in order to avoid causing CO2Waste, therefore production cost is the highest；Domestic use solid carbonic acid
The carbon sources such as hydrogen sodium, in production, the most disposable interpolation, causes initial stage CO2Content is higher and Developing restraint, later stage CO2Content is inclined
Low and limiting growth.The present invention uses flue gas to provide CO2, CO in algae solution2Content is more suitable, fixing, can preferably promote
Growth.
In the present invention, the intake of flue gas typically enough always dissolves CO ensureing to have in algae solution2On the premise of by suitably
The pH value of micro algae growth determines.Containing CO in flue gas2、SO2And NOX, being passed through rear algae solution pH value is acidity, but can pass through
The intake and the time that is passed through that control flue gas control the pH of algae solution.Extensive both culturing microalgae can be realized by the regulation of pH
Controllability, pollutes including miscellaneous algae pollution, protozoacide.Coordinate the control of pH, not only can effectively reduce these and pollute, and pollute
After improvement also become the simplest.Such as, during cultivation Nannochloropsis sp, enter the end of spring and the beginning of summer, cultivation algae solution easily infects
Cyanophyceae pollutes, and by the intake strengthening flue gas, algae solution pH is controlled just can effectively ensure Nannochloropsis sp below 7.5
Population advantage, suppression cyanophyceae growth；Algae solution pH value is controlled 4.0～5.0, keep 24～48h, unarmored dinoflagellate can be controlled
Pollute；Processing protozoacide pollution when, the method that can take to be passed through flue gas night, pH value is reduced by 3.5～5.0,
Just can kill part protozoacide.The animal tolerated at this ph, the sodium hypochlorite adding 5-10ppm just can have very much
The improvement of effect.
The system directly utilizing coal-fired plant flue gas breeding scale microalgae and cultural method thereof that the present invention provides are produced
Technique effect include:
(1) coal-fired plant flue gas needs not move through and again processes, and i.e. can be used for cultivating microalgae, decreases equipment investment, economical
Property is more preferable；
(2) type selecting and the arrangement of smoke distributor ensure that flue gas more fully contacts with microalgae, more favorably
In microalgae fast-growth；
(3) present invention only needs to control to be suitable for the algae solution pH value of micro algae growth by adjusting flue gas intake, it is not necessary to add
Other chemical reagent；
(4) the exploitation raceway pond paver that the present invention selects is more environment-friendly and safer, and the microalgae cultivated reaches food stage
National standard；
(5) present invention directly utilizes the productivity of coal-fired plant flue gas cultivating microalgae and biomass is far longer than pure CO2
Cultivate microalgae and the productivity of solid carbon source cultivation microalgae and biomass.Wherein, productivity can reach 30g/m2/D。
Below in conjunction with specific embodiment, the present invention is directly utilized coal-burning power plant and discharge flue gas large-scale farming microalgae
Method is described further.
Accompanying drawing explanation
Fig. 1 is the five kinds of membrane materials the laying raceway pond impacts on microalgae enriching heavy metal.
Detailed description of the invention
Embodiment 1
Directly utilize coal-burning power plant's discharge flue gas large-scale farming Dunaliella salina
Access flue gas main pipeline without the coal-fired plant flue gas of pretreatment by flue gas blower fan, then be distributed through bypass line
To each culturing pool；Bypass line is provided with electrically operated valve, and sets 8 branched pipes and be fixed on culturing pool pool wall.Branched pipe connects and draws flue gas
Allotter enters culturing pool, and each branched pipe sets manually-operated gate, and branched pipe end sets drain valve；Each smoke distributor is provided with hands
Movable valve.
Flue gas main pipeline is positioned on ground；Culturing pool is positioned at flue gas main pipeline side.
Branched pipe is spaced apart 2m, and every branched pipe connects 1 smoke distributor, along from 0cm at the bottom of pond under smoke distributor.
The material of smoke distributor is PPR pipe；Its material density is 1.10g/cm3；Specification is length 1.5m, bore
2.5cm, wall thickness 2.5mm, solarization air cap aperture 2.0mm；Every centimetre of allotter average laser punches 5.
The floor space of open raceway pond is 1000m2, body of wall is built into by cement, and paver is atactic copolymerized polypropene material
Material.
Algae solution pH value span of control: 7.0～9.0.
Breeding process adjusts flue gas intake by controlling smoke distributor manually-operated gate, uses 5 smoke distributors,
When algae solution pH value < when 7.0, closes part smoke distributor until algae solution pH value reaches normal span of control；When algae solution pH value >
When 9.0, opening section smoke distributor is until algae solution pH value reaches normal span of control.
Culture-cycle: 10 days.
Productivity and biomass are shown in Table 1.
Table 1 Dunaliella salina productivity and biomass
Embodiment 2
Directly utilize coal-burning power plant's discharge flue gas large-scale farming Nannochloropsis oceanica
Coal-fired plant flue gas through condensation process accesses flue gas main pipeline by flue gas blower fan, then is distributed through bypass line
To each culturing pool；Bypass line is provided with electrically operated valve, and sets 10 branched pipes and be fixed on culturing pool pool wall；Branched pipe connects and draws flue gas
Allotter enters culturing pool, and each branched pipe sets manually-operated gate, and branched pipe end sets drain valve；Each smoke distributor is provided with hands
Movable valve.
Flue gas main pipeline is positioned on ground；Culturing pool is positioned at flue gas main pipeline side.
Branched pipe is spaced apart 2.5m, and every branched pipe connects 1 smoke distributor, along from 5cm at the bottom of pond under smoke distributor.
The material of smoke distributor is PPR pipe；Its material density is 1.10g/cm3；Specification is length 2m, bore
1.5cm, wall thickness 2.5mm, solarization air cap aperture 1.5mm；Every centimetre of allotter average laser punches 5.
The floor space of open raceway pond is 82m2, body of wall is built into by cement, and paver is polypropylene random copolymer material.
Algae solution pH value span of control: 5.5～8.5.
Breeding process adjusts flue gas intake by controlling smoke distributor manually-operated gate, uses 7 smoke distributors,
When algae solution pH value < when 5.5, closes part smoke distributor until algae solution pH value reaches normal span of control；When algae solution pH value >
When 8.5, opening section smoke distributor is until algae solution pH value reaches normal span of control.
When temperature is higher than 25 DEG C, as occurred, cyanophyceae pollutes, and controls algae solution pH value 5.0～7.0；
Pollute if there is unarmored dinoflagellate, algae solution pH value is controlled 4.0～5.0, keep 36h；
Pollute if there is protozoacide, be then passed through flue gas night, algae solution pH value is controlled 3.5～5.0.
Culture-cycle: 7 days.
Productivity and biomass are shown in Table 2.
Table 2 Nannochloropsis oceanica productivity and biomass
Embodiment 3
Directly utilize coal-burning power plant's discharge flue gas large-scale farming Nannochloropsis sp
Access flue gas main pipeline without the coal-fired plant flue gas of pretreatment by flue gas blower fan, then be distributed through bypass line
To each culturing pool；Bypass line is provided with electrically operated valve, and sets 10 branched pipes and be fixed on culturing pool pool wall；Branched pipe connects and draws flue gas
Allotter enters culturing pool, and each branched pipe sets manually-operated gate, and branched pipe end sets drain valve.Each smoke distributor is provided with hands
Movable valve.
Flue gas main pipeline is positioned on ground；Culturing pool is positioned at flue gas main pipeline side.
Branched pipe is spaced apart 2.5m, and every branched pipe connects 1 smoke distributor, along from 5cm at the bottom of pond under smoke distributor.
The material of smoke distributor is PE pipe；Its material density is 1.08g/cm3；Specification is length 2m, bore 1cm,
Wall thickness 2.5mm, solarization air cap aperture 0.8mm；Every centimetre of allotter average laser punches 5.
The floor space of open raceway pond is 8.6m2, body of wall is built into by cement, and paver is elastic polyethylene material.
Algae solution pH value span of control: 5.5-8.5.
Breeding process adjusts flue gas intake by controlling smoke distributor manually-operated gate, uses 7 smoke distributors,
When algae solution pH value < when 5.5, closes part smoke distributor until algae solution pH value reaches normal span of control；When algae solution pH value >
When 8.5, opening section smoke distributor is until algae solution pH value reaches normal span of control.
When temperature is higher than 25 DEG C, as occurred, cyanophyceae pollutes, and controls algae solution pH value 5.0～7.0；
Pollute if there is unarmored dinoflagellate, algae solution pH value controlled 4.0～5.0, keep 24h,；
Pollute if there is protozoacide, be then passed through flue gas night, algae solution pH value is controlled 3.5～5.0.
Culture-cycle: 5 days.
Productivity and biomass are shown in Table 3.
Table 3 Nannochloropsis sp productivity and biomass
Embodiment 4
Directly utilize coal-burning power plant's discharge flue gas large-scale farming Skeletonema Costatum
Access flue gas main pipeline without the coal-fired plant flue gas of pretreatment by flue gas blower fan, then be distributed through bypass line
To each culturing pool；Bypass line is provided with electrically operated valve, and sets 8 branched pipes and be fixed on culturing pool pool wall；Branched pipe connects and draws flue gas
Allotter enters culturing pool, and each branched pipe sets manually-operated gate, and branched pipe end sets drain valve；Each smoke distributor is provided with hands
Movable valve.
Flue gas main pipeline is positioned on ground；Culturing pool is positioned at flue gas main pipeline both sides.
Branched pipe is spaced apart 2m, and every branched pipe connects 1 smoke distributor, along from 5cm at the bottom of pond under smoke distributor.
The material of smoke distributor is PE pipe；Its material density is 1.08g/cm3；Specification is length 1.5m, bore
1.5cm, wall thickness 2.5mm, solarization air cap aperture 1.5mm；Every centimetre of allotter average laser punches 5.
Open raceway pond 6, floor space is respectively 8.6m2、18.6m2、34m2、82m2、153m2、324m2, body of wall is by cement
Being built into, paver is elastic polyethylene material.
Algae solution pH value span of control: 7.0～8.0.
Breeding process adjusts flue gas intake by controlling smoke distributor manually-operated gate, uses 8 smoke distributors,
When algae solution pH value < when 7.0, closes part smoke distributor until algae solution pH value reaches normal span of control；When algae solution pH value >
When 8.0, opening section smoke distributor is until algae solution pH value reaches normal span of control.
When temperature is higher than 25 DEG C, as occurred, cyanophyceae pollutes, and controls algae solution pH value 5.0～7.0；
Pollute if there is unarmored dinoflagellate, algae solution pH value is controlled 4.0～5.0, keep 48h；
Pollute if there is protozoacide, be then passed through flue gas night, algae solution pH value is controlled 3.5～5.0.
Culture-cycle: 6 days.
Productivity and biomass are shown in Table 4.
Table 4 Skeletonema Costatum productivity and biomass
Embodiment 5
Directly utilize coal-burning power plant's discharge flue gas large-scale farming flat algae
Access flue gas main pipeline without the coal-fired plant flue gas of pretreatment by flue gas blower fan, then be distributed through bypass line
To each culturing pool；Bypass line is provided with electrically operated valve, and sets 8 branched pipes and be fixed on culturing pool pool wall；Branched pipe connects and draws flue gas
Allotter enters culturing pool, and each branched pipe sets manually-operated gate, and branched pipe end sets drain valve.Each smoke distributor is provided with hands
Movable valve.
Flue gas main pipeline is positioned on ground；Culturing pool is positioned at flue gas main pipeline both sides.
Branched pipe is spaced apart 2.5m, and every branched pipe connects 1 smoke distributor, along from 5cm at the bottom of pond under smoke distributor.
The material of smoke distributor is PE pipe；Its material density is 1.08g/cm3；Specification is length 2.0m, bore
1.5cm, wall thickness 2.5mm, solarization air cap aperture 1.5mm；Every centimetre of allotter average laser punches 5.
Open raceway pond 2, floor space is respectively 600m2And 1000m2, body of wall is built into by cement, and paver is elastic
Polythene material and atactic copolymerized polypropene.
Algae solution pH value span of control: 7.5～8.5.
Breeding process adjusts flue gas intake by controlling smoke distributor manually-operated gate, uses 6 smoke distributors,
When algae solution pH value < when 7.5, closes part smoke distributor until algae solution pH value reaches normal span of control；When algae solution pH value >
When 8.5, opening section smoke distributor is until algae solution pH value reaches normal span of control.
When temperature is higher than 25 DEG C, as occurred, cyanophyceae pollutes, and controls algae solution pH value 5.0～7.0；
Pollute if there is unarmored dinoflagellate, algae solution pH value controlled 4.0～5.0, keep 24h,；
Pollute if there is protozoacide, be then passed through flue gas night, algae solution pH value is controlled 3.5～5.0.
Culture-cycle: 9 days.
Productivity and biomass are shown in Table 5.
Table 5 flat algae productivity and biomass
Embodiment described above is only to be described the preferred embodiment of the present invention, the not model to the present invention
Enclose and be defined, on the premise of designing spirit without departing from the present invention, the those of ordinary skill in the art technical side to the present invention
Various deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (10)
1. the method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae, it is characterised in that: will not pass through pre-
The coal-burning power plant's discharge flue gas processed, in flue gas supply unit is passed into both culturing microalgae unit, is passed through by adjusting flue gas
Amount controls algae solution pH value, it is ensured that within the culture-cycle, pH value is in the pH value range of applicable micro algae growth, and the culture-cycle terminates
After, obtain, by results unit, the microalgae cultivated；
When pH value is less than the pH value range of applicable micro algae growth, reduce flue gas intake until algae solution pH value reaches to be suitable for microalgae
The pH value range of growth；When pH value is higher than when being suitable for the pH value range of micro algae growth, strengthen flue gas intake until algae solution pH value
Reach to be suitable for the pH value range of micro algae growth；
The described culture-cycle is 5～10 days.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 1, its
It is characterised by: described flue gas supply unit includes that flue gas blower fan, flue gas main pipeline, flue gas bypass line, bypass line are electronic
Valve, branched pipe, branched pipe manually-operated gate, drain valve, smoke distributor, smoke distributor manually-operated gate；Both culturing microalgae unit
Including micro-algae culture pond, paddle wheel；Results unit includes centrifuge；
Described flue gas enters flue gas main pipeline through flue gas blower fan, enters back into bypass line, is distributed to each cultivation through bypass line
Pond；Bypass line is provided with electrically operated valve and controls flue gas conveying, and sets 8～10 branched pipes and be fixed on culturing pool pool wall；Branched pipe
Connecting smoke distributor, each branched pipe sets manually-operated gate and controls flue gas conveying, and branched pipe end sets drain valve；Each flue gas divides
Orchestration stretches into culturing pool, and is provided with manually-operated gate；
Described flue gas main pipeline is layed on ground；Culturing pool is positioned at the both sides of flue gas main pipeline；
Described branched pipe is spaced apart 2～2.5m, and every branched pipe connects 1 smoke distributor, along from pond under smoke distributor
The end 0～5cm；
The material of described smoke distributor is corrosion-resistant PE pipe or corrosion-resistant PPR pipe；Its material density is more than density of sea water；Rule
Lattice are length 1.5～2m, bore 1～2.5cm, wall thickness 2.5mm, solarization air cap aperture 0.8～2.0mm；Every centimetre of allotter is put down
All laser boring 5；
Described micro-algae culture pond is open raceway pond, including warmhouse booth culturing pool and outdoor breeding pond；Warmhouse booth cultivates
The floor space specification in pond includes 8.6m2、18.6m2、34m2、82m2、153m2、324m2；The floor space specification in outdoor breeding pond includes
600m2And 1000m2；
The body of wall of described open raceway pond is built into by cement；Paver is elastic polyethylene material (FPO) and random copolymerization
One in polypropylene (PPR) or a combination thereof；Use in elastic polyethylene material (FPO) and atactic copolymerized polypropene (PPR)
A kind of or a combination thereof carry out both culturing microalgae as the paver of open raceway pond, heavy metal Pb in microalgae cell, Cd,
The content of Hg and As is respectively as follows:
Pb: < 2ppm,
Cd: < 0.2ppm,
Hg: < 0.05ppm
As: < 0.5ppm.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 1, its
It is characterised by: described flue gas intake can be controlled by smoke distributor manually-operated gate.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 1, its
It is characterised by: after coal-fired plant flue gas may also pass through simple pretreatment, then be passed in micro-algae culture pond；Described pretreatment side
Formula includes the condensation to coal-burning power plant's discharge flue gas.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 1, its
It is characterised by: the algae solution pH value being suitable for micro algae growth is 4.0～10.0.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 5, its
It is characterised by: the algae solution pH value of suitable Nannochloropsis sp growth is 5.5～8.5；The algae solution pH value of suitable Dunaliella salina growth
It is 7.0～9.0；The algae solution pH value of suitable Nannochloropsis oceanica growth is 5.5～8.5；The algae solution pH value of suitable Skeletonema Costatum growth
It is 7.0～8.0；Algae solution PH of suitable Growth of Platymonas Spp is 7.5～8.5.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 1, its
It is characterized by the regulation of algae solution pH value, miscellaneous algae pollution can be controlled and protozoacide is polluted；
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 7, its
It is characterised by: described miscellaneous algae pollution includes but not limited to that cyanophyceae pollutes, unarmored dinoflagellate pollutes.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 8, its
It is characterised by: when temperature is higher than 25 DEG C, algae solution pH value is controlled 5.0～7.0, cyanophyceae can be controlled and pollute；
Algae solution pH value is controlled 4.0～5.0, keep 24～48h, unarmored dinoflagellate can be controlled and pollute；
Night is passed through flue gas, is controlled by algae solution pH value 3.5～5.0, can control protozoacide and pollute.
A kind of method directly utilizing coal-burning power plant's discharge flue gas large-scale farming microalgae the most according to claim 1, its
Be characterised by: the cultivation kind of microalgae include Cyanophyta, Chrysophyta, Xanthophyta, Bacillariophyta, Pyrrhophyta, Cryptophyta, Euglenophyta,
Any one or more than one combination in Chlorophyta.
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| CN115212704A (en) * | 2022-06-27 | 2022-10-21 | 江西江投电力技术与试验研究有限公司 | Coal-fired power plant flue tail gas regulating system for cultivating microalgae |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111183217A (en) * | 2017-07-25 | 2020-05-19 | 深圳市前海小藻科技有限公司 | Method for harvesting microalgae |
| CN108277155A (en) * | 2018-03-13 | 2018-07-13 | 江苏大学 | A kind of algae culture pond |
| CN114774283A (en) * | 2022-04-29 | 2022-07-22 | 西南科技大学 | By using high-concentration CO2Method for culturing microalgae by using coal-fired flue gas |
| CN115212704A (en) * | 2022-06-27 | 2022-10-21 | 江西江投电力技术与试验研究有限公司 | Coal-fired power plant flue tail gas regulating system for cultivating microalgae |
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