CN102766567B - Overwater unpowered microalgae culture method and floating island system - Google Patents
Overwater unpowered microalgae culture method and floating island system Download PDFInfo
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Abstract
Disclosed are an overwater unpowered microalgae culture method and a floating island system. The floating island system comprises a circular floating bed which is provided with a treatment tank, a culture tank, a sedimentation tank and a collection tank. The collection tank comprises a water collection tank and an algae collection tank. The treatment tank is connected with a water inlet pipe. A first partition is arranged between the treatment tank and the culture tank. A second partition is arranged between the culture tank and the sedimentation tank. The upper portion of the sedimentation tank is communicated with the water collection tank through a water outlet pipe. The bottom of the sedimentation tank is communicated with the algae collection tank through an algae discharge pipe. Polluted water can be pumped into the floating island culture tank for microalgae culture by atmospheric pressure, algae absorb nutrient salts in the water and carbon dioxide in air, and the water and the algae are primarily separated by sedimentation. Therefore, unpowered microalgae culture, polluted water purification, emission reduction, carbon sequestration, water-algae separation and the like are achieved, and cost in microalgae culture is reduced greatly.
Description
Technical field
The present invention relates to a kind of open microalgae culture method waterborne and chinampa system, belong to micro-algae culture technique field.
Background technology
The fast development of world economy since the nineties in 20th century, increases greatly to oil and coal demand on the one hand, causes that fossil oil storage capacity die-offs, Nonrenewable energy resources are on the verge of exhaustion; On the other hand, suitability for industrialized production is accelerated carbon emission, causes Greenhouse effect, and the waste water of discharge causes the problems such as environmental degradation simultaneously.Thus, energy problem, Climatic issues, environmental problem become the subject matter of 21 century urgent need solution.Micro-algae is a kind of primeval life having survived on earth tens years, and its oleaginousness, up to 70%, is that the most promising produce oil is biological; Micro-algae absorbing carbon dioxide and nutritive salt in the process of growth, has unusual effect to solid carbon with purifying waste water simultaneously; In addition, the micro-algae of part also has the nutritive substances such as higher protein, polysaccharide, lipid acid, has higher edibleness.Therefore, micro-algae is likely the biology of the tool potentiality that solve 21 century energy dilemma, ecocrisis and crisis in food.
Countries in the world have started to greatly develop micro-algae industry, and the countries such as the U.S., Holland, Israel, Britain drop into substantial contribution and done large quantity research at aspects such as micro-algae cultivation, Strain selection, system development, suitability for industrialized production.China also extremely payes attention to the development of micro-algae industry, and especially " 973 " project of 2011 Nian， China first " micro-algae energy " direction starts comprehensively, and investment amount will reach 10,000,000,000, indicate that China's micro-algae biofuel research work enters peak time.Yet, the micro-algae industry in countries in the world is all in the middle real stage at present, seldom achievement is carried out extensive industrialization operation, mainly face three problems: the firstth, current micro-algae is cultivated and mainly carries out on land, water consumption, consumption ground, power consumption, consumption equipment have increased micro-algae and have cultivated cost, become the main neck bottle of its large-scale production; The secondth, micro-algae culture technique is still immature, and the defects such as high oily pure algae screening, inoculation, cultivation have material impact to the exploitation of high value algae; The 3rd is that micro-algae evaluation and exploration technology is not perfect, and the technical costss such as the conversion of algae diesel oil, byproduct extraction are too high.How solving these three problems becomes the key of micro-algae industry fast development, is also the major technique demand of our times bioenergy research and development, and meaning is very great.
In addition, China faces serious dystrophication problem at present, Taihu Lake, Dian Chi, Huaihe River and Three Gorges Reservoir present serious body eutrophication and follow serious algal tufa phenomenon, and cities and towns industry and sanitary sewage discharge cause the little stream pollution in cities and towns, Ecological degenerative problem and sternness thereof.In addition, China's Dam Construction, as: Three Gorges Dam has changed basin carbon cycle process, has flooded part carbon and has converged, and has produced new carbon source, and natural river course solvability carbon concentration background is higher in addition, and it provides sufficient carbon source for algal bloom.How can carry out on the water micro-algae and cultivate, absorb in a large number on the one hand water nutritions, purifying water body, absorbs water body solvability carbon on the other hand, and generation is organic, is the new way of carrying out micro-algae industrialization, dwindling cost.
Summary of the invention
Technical problem to be solved by this invention is to propose a kind of open microalgae culture method waterborne and chinampa system.Can utilize normal atmosphere that polluted-water is pressed in the cultivation pool of chinampa and carries out micro-algae cultivation, make algae absorb nutritive salt and the airborne carbonic acid gas in water body, then utilize settling process that algae is carried out to initial gross separation.And then reach the objects such as unpowered micro-algae cultivation, polluted water purification, the solid carbon of reduction of discharging, algae separation, greatly dwindle micro-algae and cultivate cost.
Above-mentioned purpose of the present invention is to realize by such technical scheme: a kind of opening waterborne algae that declines is cultivated chinampa system, comprise annular floating bed, described annular floating bed is provided with treating pond, cultivation pool, settling bowl and collecting tank, described collecting tank comprises water collecting basin, Ji Zaochi, described treating pond is connected with water inlet pipe, between described treating pond and cultivation pool, be provided with the first dividing plate, between described cultivation pool and settling bowl, be provided with second partition, between described settling bowl top and water collecting basin, by rising pipe, be communicated with, bottom described settling bowl with between collection algae pond, by going out algae pipe, be communicated with.
Described annular floating bed consists of: steelframe, floating drum and panel, and described steelframe is welded by angle steel, and floating drum is upper urushoil cylinder, and panel is that bamboo springboard processes.
The water inlet of described water inlet pipe is provided with Stainless Steel Cloth, and described water inlet pipe and treating pond junction are provided with valve.
Described cultivation pool is flat rectangular parallelepiped, is evenly provided with along its length by three dividing plates, and cultivation pool is separated into two circulation loops.
Described collecting tank becomes water collecting basin, collection algae pond two portions by baffle for separating.
Described rising pipe one end is communicated with settling bowl top, and the other end is provided with valve and is placed in water collecting basin top.
Describedly go out algae pipe one end and be communicated with settling bowl top, the other end is provided with valve and is placed in top, collection algae pond.
An open microalgae culture method, comprises the following steps:
Step 1: close all valves and dividing plate, water is put into in described chinampa, open all valves and dividing plate, water body enters treating pond through water inlet pipe, pours into afterwards cultivation pool, enters water collecting basin after the settling bowl of flowing through;
Step 2: pending pond and cultivation pool are filled after water body, closes water inlet pipe valve and rising pipe, goes out algae pipe place valve, extracts water collecting basin water body out, regulates floating drum and counterweight, makes chinampa in equilibrium state;
Step 3: add corresponding substratum in treating pond, cultivate the water body residence time according to micro-algae, adjust water pipe and go out algae pipe, open water inlet pipe place valve, form water body circulation loop;
Step 4: water body is via water inlet pipe, flow into treating pond, add after substratum, flow into cultivation pool, through cultivating micro-algae reached after finite concentration after a while, the settling bowl of flowing through, static for some time, the bigger micro-algae of density flows into Ji Zaochi by going out algae pipe, and the water body after purification flows into water collecting basin by rising pipe.
A kind of open microalgae culture method waterborne of the present invention and chinampa system, can on the water surface, carry out the micro-algae of unpowered Cyclic culture, can be applicable to the waters such as China most of eutrophic water bodies, especially Three Gorges Reservoir, Taihu Lake, Dian Chi, after suitably improving in municipal pollution river, also can apply.The method and chinampa system make full use of eutrophic water body nutritive salt, not only can purifying water body, and can also absorb water body and airborne carbonic acid gas, play reduction of discharging effect significantly.This chinampa system is for conventional inexpensive materials composition, cheap; Culture in situ has been saved the water consumption that cultivate on land simultaneously, and unpowered technology has been saved a large amount of lift pump energy, has significantly lowered microalgae and has cultivated cost, can carry out large-scale industrialized production.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is chinampa of the present invention system vertical view.
Fig. 2 is chinampa of the present invention system longitudinal diagram.
Fig. 3 is the present invention's annular floating bed panel vertical view.
Fig. 4 is the present invention's annular floating bed steelframe vertical view.
Fig. 5 is the present invention's annular floating bed front view.
Fig. 6 is water inlet pipe side-view of the present invention.
Fig. 7 is water inlet pipe front view of the present invention.
Fig. 8 is the slot side-view of the present invention's the first dividing plate, the first dividing plate.
Fig. 9 is the slot vertical view of the present invention's the first dividing plate, the first dividing plate.
Figure 10 is the side-view of the present invention's the first dividing plate, the first dividing plate.
Figure 11 is the front view of the present invention's the first dividing plate, the first dividing plate.
Figure 12 is process flow sheet of the present invention.
Embodiment
Open microalgae culture method and a chinampa system, utilize steel to be welded into annular steelframe 1-1, sets up floating drum 1-2 under steelframe 1-1, and it is upper that bamboo springboard is laid on to steelframe 1-1, forms an inner hollow, the annular floating bed 1 that surrounding passageway surrounds.Recycling angle steel is separated into annular floating bed 1 hollow space four parts of different sizes on request, the open water frame of the difference size that polythene material is made is filled and presented respectively four hollow spaces, successively formation processing pond 3, cultivation pool 4, settling bowl 5 and collecting tank 6.
Wherein, treating pond 3 lower than floating drum 0.5 m, is isolated into four parts by dividing plate by cultivation pool 4 with cultivation pool 4 bottoms, forms loop-type cultivation pool.
Settling bowl 5 is shaped as streamline doline, and bottom is lower than circulating culturing pool 1.0 m.
With dividing plate, collecting tank 6 being divided into water collecting basin 6-1 and collection algae pond 6-2, is rectangular parallelepiped, and bottom is lower than settling bowl 5 bottom 1.0 m.
The long PVC water pipe of 5 m is switched to treating pond 3, and junction, below floating drum 1-2 bottom, forms water inlet pipe 2.Utilize pvc pipe that settling bowl 5 funnel bottom are connected with collection algae pond 6-2.Utilize pvc pipe that settling bowl 5 tops and water collecting basin 6-1 are connected.Between treating pond 3 and cultivation pool 4, cultivation pool 4 and settling bowl 5, evenly laying pvc pipe is communicated with.At each pipe place of connecing, movable switch is all set.Form the opening waterborne algae that declines and cultivate chinampa system.
Chinampa is placed in water body, eutrophic water body is entered by entering pipe, process in treated pond 3, enters cultivation pool 4 and carry out micro-algae propagation, then flows into settling bowl 5 and carry out frond sedimentation ， Shang Cheongju water body and enter water collecting basin 6-1, and high algae water body enters collection algae pond 6-2.Collect in time high algae water body and discharge upper Cheongju water body, just can form unpowered micro-algae and cultivate recycle circuit, its technique as shown in Figure 6.
Annular floating bed 1 is the floating supporting structure on micro-algae waterborne chinampa, as shown in Figure 1 and Figure 2.In annular floating bed 1, treating pond 3, cultivation pool 4, settling bowl 5 and collecting tank 6 are installed, collecting tank 6 comprises water collecting basin 6-1 and collection algae pond 6-2.Water inlet pipe 2 is connected with treating pond 3, between treating pond 3 and cultivation pool 4, with the first dividing plate 7, separate, between cultivation pool 4 and settling bowl 5, with second partition 8, separate, between settling bowl 5 tops and water collecting basin 6-1, with rising pipe 9, connect, between settling bowl 5 bottoms and collection algae pond 6-2, with going out algae pipe 10, connect.
Annular floating bed 1 consists of steelframe 1-1, floating drum 1-2 and panel 1-3.Wherein steelframe 1-1 is welded by angle steel, and floating drum 1-2 is the upper urushoil cylinders of 1000 L, and panel 1-3 is that the processing of bamboo springboard is tailored and formed, as shown in Fig. 3 ~ 5.
Treating pond 3 is made of plastics, and is shaped as rectangular parallelepiped, as shown in Figure 1 and Figure 2.
Settling bowl 5 is made of plastics, and shaped upper part rectangular parallelepiped, lower shape are streamline doline.The smooth perforation of upper and lower two portions and nothing be flex point obviously, as shown in Figure 1 and Figure 2.
The first dividing plate 7 is made of plastics, and comprises the clamp of 7-1 with holes and pulls and pushes plate, and the clamp of 7-1 with holes is through plate, and itself and treating pond 3 and cultivation pool 4 are consolidated, and pull and push plate for baffler not with holes, as shown in Fig. 8 ~ 12.
Rising pipe 9 is spliced by pvc pipe, and one end and settling bowl 5 tops are connected, and the other end mounted valve is also placed in water collecting basin 6-1 top, as shown in Figure 2.
Go out algae pipe 10 the same with rising pipe 9, one end and settling bowl 5 tops are connected, and the other end mounted valve is also placed in collection algae pond 6-2 top, as shown in Figure 2.
It is as follows that unpowered microalgae culture method is carried out on micro-algae waterborne chinampa:
Close all valves and dividing plate, chinampa system is put into water, open all valves and dividing plate, water body enters pre-treatment pond 3 through water inlet pipe 2, pours into circulating culturing pool 4, after the camera bellows settling bowl 5 of flowing through, enters water collecting basin 6,
Until pre-treatment pond 3, fill after water body with circulating culturing pool 4, close water inlet pipe 2 valves and rising pipe 9, go out algae pipe 10 place's valves.Extract water collecting basin 6-1 water body out, regulate left and right floating drum and counterweight, make chinampa system in equilibrium state.
Then, according to circumstances in treating pond 3, add corresponding micro-algae culture medium, according to micro-algae, cultivate the water body residence time, adjust water pipe 9 and go out algae pipe 10, open water inlet pipe 2 place's valves, form water body circulation loop.
Water body, via water inlet pipe 2, flows into pre-treatment pond 3, adds after substratum, flows into circulating culturing pool 4, through 5-7 Time of Day, cultivates, and makes micro-algae chlorophyll-a concentration reach 1000 μ gL
-1after, the settling bowl 5 of flowing through, static 24 hours, the bigger micro-algae of density flowed into collection algae pond 6-2 by going out algae pipe 10, and the water body after purification flows into water collecting basin 6-1 by rising pipe 9.
Claims (8)
1. an opening waterborne algae that declines is cultivated chinampa system, comprise annular floating bed (1), it is characterized in that, described annular floating bed (1) is provided with treating pond (3), cultivation pool (4), settling bowl (5) and collecting tank (6), described treating pond (3), cultivation pool (4), between settling bowl (5), be communicated with, described collecting tank (6) comprises water collecting basin (6-1), Ji Zaochi (6-2), described treating pond (3) is connected with water inlet pipe (2), between described treating pond (3) and cultivation pool (4), be provided with the first dividing plate (7), between described cultivation pool (4) and settling bowl (5), be provided with second partition (8), between described settling bowl (5) top and water collecting basin, by rising pipe (9), be communicated with, bottom described settling bowl (5) with between Ji Zaochi (6-2), by going out algae pipe (10), be communicated with.
2. a kind of opening waterborne algae that declines is cultivated chinampa system according to claim 1, it is characterized in that, described annular floating bed (1) consists of: steelframe (1-1), floating drum (1-2) and panel (1-3), described steelframe (1-1) is welded by angle steel, floating drum (1-2) is upper urushoil cylinder, and panel (1-3) processes for bamboo springboard.
3. a kind of opening waterborne algae that declines is cultivated chinampa system according to claim 1, it is characterized in that, the water inlet of described water inlet pipe (2) is provided with Stainless Steel Cloth, and described water inlet pipe (2) is provided with valve with treating pond (3) junction.
4. a kind of opening waterborne algae that declines is cultivated chinampa system according to claim 1, it is characterized in that, described cultivation pool (4) is flat rectangular parallelepiped, is evenly provided with along its length three dividing plates, and cultivation pool (4) is separated into two circulation loops.
5. a kind of opening waterborne algae that declines is cultivated chinampa system according to claim 1, it is characterized in that, described collecting tank (6) becomes water collecting basin (6-1), Ji Zaochi (6-2) two portions by baffle for separating.
6. a kind of opening waterborne algae that declines is cultivated chinampa system according to claim 1, it is characterized in that, described rising pipe (9) one end is communicated with settling bowl (5) top, and the other end is provided with valve and is placed in above water collecting basin (6-1).
7. a kind of opening waterborne algae that declines is cultivated chinampa system according to claim 1, it is characterized in that, described in go out algae pipe (10) one end and be communicated with settling bowl (5) bottom, the other end is provided with valve and is placed in above Ji Zaochi (6-2).
8. utilize the chinampa system described in claim 2 to carry out open microalgae culture method waterborne, it is characterized in that comprising the following steps:
Step 1: close all valves and dividing plate, water is put into in described chinampa, open all valves and dividing plate, water body enters treating pond (3) through water inlet pipe (2), pours into afterwards cultivation pool (4), enters water collecting basin (6) after the settling bowl of flowing through (5);
Step 2: fill after water body with cultivation pool (4) pending pond (3), close water inlet pipe (2) valve and rising pipe (9), go out algae pipe (10) and locate valve, extract water collecting basin (6-1) water body out, regulate floating drum (1-2) and counterweight, make chinampa in equilibrium state;
Step 3: add corresponding substratum in treating pond (3), cultivate the water body residence time according to micro-algae, adjust water pipe (9) and go out algae pipe (10), open water inlet pipe (2) and locate valve, form water body circulation loop;
Step 4: water body is via water inlet pipe (2), flow into treating pond (3), add after substratum, flow into cultivation pool (4), through cultivating micro-algae reached after finite concentration after a while, the settling bowl of flowing through (5), static for some time, the bigger micro-algae of density flows into Ji Zaochi (6-2) by going out algae pipe (10), and the water body after purification flows into water collecting basin (6-1) by rising pipe (9).
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