CN207713723U - Plain type raceway pond for microdisk electrode - Google Patents

Abstract

The utility model belongs to photobioreactor field, and in particular to is used for the plain type raceway pond and its application method of microdisk electrode.Including raceway pond liner and raceway pond frame, wherein raceway pond frame includes straight channel wall, curved flow path wall, flow blocking wall, agitating paddle, variable speed electric motors, particularly, strut and liquid impellers；The straight channel wall and curved flow path wall and the circulating water pool frame of flow blocking wall composition raceway pond；The raceway pond frame of the utility model, structure is simple, solid, easy to disassemble, is easy amplification, corresponding size can be determined according to actual place；The raceway pond liner of the utility model is a complete tube-in-tube structure, and when use not will produce fold, need not also be bonded, can effectively avoid leakage, consisting of food grade materials, heavy metal pollution risk when can avoid using cement or geomembrane；The liquid impellers of the utility model can coordinate agitating paddle to use, and have the characteristics that significantly reduce liquid mixing energy consumption, while frustule being avoided to precipitate, to be conducive to improve area yield.

Description

Plain type raceway pond for microdisk electrode

Technical field

The utility model belongs to photobioreactor field, and in particular to a kind of plain type runway for microdisk electrode Pond.

Background technology

Microalgae is a kind of phototroph, can pass through fixed CO₂Produce multi-chemical.Some can be used for producing Aliphatic hydrocarbon, as Wild Vitis species produce hydrocarbon amount up to the 15%~75% of dry cell weight；Some can be used for accumulating glycogen, and some can be used for accumulating Tired glycerine, the fat content of many microalgaes are the important source materials for producing biodiesel up to 30% or more of dry weight.Yin Qisheng again Long rate is fast, the advantage of cultivating etc. can be carried out using waste water and gas, worldwide of increased attention.

Currently, the culture of microalgae mainly carries out in bioreactor, the photo-biological for being currently used for microdisk electrode is anti- Answering device mainly has open and closed two types.Open refers to using open pond culture apparatus, such as raceway pond, circle Pond, this kind of reactor has the features such as easy to operate, low investment, in the industrialized production of spirulina, chlorella and salt algae Be applied widely (Liu Tianzhong, Zhang Wei, Wang Junfeng micro-algae large-scale culture technique progress life sciences, 2014,26 (005):509-522；Ben-Amotz A,Avron M.The biotechnology of mass culturing Dunaliella for products of commercial interest.Algal and Cyanobacterial Biotechnology,1989,91-114；Pulz O.Photobioreactor:production systems for phototrophic microorganisms.Applied Microbiology and Biotechnology,2001, 57 (3):287-293).Closed refers to the closed bioreactor using different structure, such as gas-lifting type, stirring-type, pipe Formula etc. can be used for producing high value products (such as drug or health products) or seeding tank (the Tredici M as open pond culture R.Massproduction of microalgae:photobioreactors.Handbook of microalgal culture.Biotechnology and Applied Phycology,2004,(1)178-214；Lehr F, Posten C.Closed photobioreactors as tools for biofuel production.Current opinion in Biotechnology,2009,20(3):280-285.)。

In traditional Large-scale microalgae incubation, raceway pond is Typical Representative, and is most widely used in the world Microalgae culture system.Raceway pond is usually to be constructed by sand or cement, needs plastic film mulch to prevent leakage in incubation, also may be used To add impervious barrier at cement pit bottom.In China Inner Mongol area, the opening pond used in both culturing microalgae is usually the race surrounded by sand Road formula water channel needs laying plastic, generally polyethylene or nylon plastic(s) film in production process.Very due to this type film Fragility is easily scratched by rubble, sharp weapon etc., and the phenomenon of leakage happens occasionally during microdisk electrode, and is frequently replaced mulch and expended Manpower and materials and cause white pollution.Area is more common in south China for the ground constructed by cement or half ground raceway pond, And generally it can be laid with geomembrane after the completion of bottom of pond is built plus impervious barrier or cement pit in civil engineering, material is generally height Density Polyethylene Resin.But since culture solution is in direct contact cement or geomembrane, cause content of beary metal in microalgae cell super Target increased risk.Attention further with people to product quality, microdisk electrode should an environmental protection, safety system in into Row.

In addition, the flowing of culture solution generally leans on blender (impeller) to drive in raceway pond, blender is generally arranged at runway In the straight channel in pond, make microalgae shuttling movement, uniformly it is light-exposed.Raceway pond generally has dead zone at curved runner, at dead zone Microalgae is easy to mix uneven, causes cell precipitation, influences the growth of microalgae.The mean depth of culture solution is generally 20~ 30cm, under this condition, since the penetration depth of light is limited, it is difficult to reach High Density Cultivation, general culture density is no more than 1g/L, it is most of in 0.5g/L or so.Increasing mixing speed can make flow accelerate, and reduce dead at the curved runner of raceway pond Area, at the same so that culture solution is sufficiently mixed, frustule receives illumination in turn, be conducive to increase the total yield.But drive culture solution The consumed energy consumption of flowing, mixing will greatly increase.

For the construction material and method of raceway pond, correlative study is not very much.Han Feifei etc. uses polypropylene plastics It machined 1.35m²Plastic track pond (Han Feifei, doctoral thesis, using high lipid-producing as the chlorella light autotrophy culture of target Process optimization and preliminary amplification, East China University of Science, 2013, p84-85.), the side that Sun Zhongliang etc. is welded using stainless steel iron plate Method machined 2m²Irony raceway pond (Sun Zhongliang, doctoral thesis, the absorption enhancement and cigarette of low concentration of carbon dioxide culture microalgae Road gas component modulation, university of the Chinese Academy of Sciences, 2015, p55.).But above-mentioned material, there are of high cost, what cannot be amplified lacks Point.The problems such as mixing for culture solution in raceway pond and stirring energy consumption, national inventing patent ZL20109100.4 discloses one Kind opens pond and its application method and purposes for the low head of large-scale culturing micro-algae, described according to the opening pond of the invention Open pond includes blender, wherein rotating mixer, in the height highest of the bottom of pond in the algae solution exit of blender, with algae solution The bottom of pond difference in height of inlet is less than 5cm, remaining runner is all lower slope section, and the invention is advantageously implemented thin layer cultivation, improves Algae cell density reduces the energy consumption of water body driving；China national practical new-type patent ZL201420768663.3 disclose deflector and Using its raceway pond, according to this utility model, deflector is set in raceway pond curved runner section, is fixedly connected on the deflector It is useful for supporting the deflector and forms it into the supporting rack of circular shape, the both ends of the main backstop are separately fixed at institute On the top edge for stating deflector both ends, this utility model advantageously reduces the mixing dead zone at curved runner.But above-mentioned improvement increases The complexity of runway pool structure is added, the quantities of outdoor construction is bigger than normal, is unfavorable for the facility of control and the operation of cost.

Utility model content

This practical purpose is to overcome leakage and heavy metal pollution risk existing for traditional raceway pond construction method big The problem of materials such as phenomenon and plastics, iron plate are not easy to amplify, provide it is a kind of can amplify and cultivate environmental protection, safety be used for The low cost simple formula raceway pond of microdisk electrode.

The design of the utility model is to weld to form raceway pond frame using stainless steel tube and stainless steel mesh sheet, instead of tradition Digging canal and joints cement raceway pond method of construction；It bonds to form the replacement of raceway pond liner using the PVC grid cloth of food-grade Polyethylene film and geomembrane；Inner lining film and frame form closed circulation pond, using the installation liquid impellers at curved runner It is common to promote liquid flowing in conjunction with the mode of agitating paddle.

The technical solution adopted in the utility model is：A kind of plain type raceway pond for microdisk electrode, including raceway pond Liner B and raceway pond frame A (Fig. 1), wherein raceway pond frame A include straight channel wall 1, curved flow path wall 2, flow blocking wall 3, agitating paddle 4, variable speed electric motors, particularly 5, strut 6 and liquid impellers 7 (Fig. 2)；The straight channel wall 1 is run with curved flow path wall 2 and the composition of flow blocking wall 3 The circulating water pool frame in road pond；The strut 6 is located at raceway pond for connecting flow blocking wall 3 and straight channel wall 1 and curved flow path wall 2 Top and bottom of pond, length be equal to the width or curved flow path wall 2 and flow blocking wall 3 for the straight channel that straight channel wall 1 and flow blocking wall 3 form The radius of the curved runner of composition；The agitating paddle 4 is located in straight channel, and one end is fixed on flow blocking wall 3, the other end and speed change Motor 5 connects, and rotation is to push liquid to flow under the drive of variable speed electric motors, particularly 5；The liquid impellers 7 are separately mounted to curved Runner and the joining place of straight channel are at angle theta with liquid flow direction nearby or in curved runner, wherein 0<θ<90°； The raceway pond liner B is different from the plastic film for sand water channel, also different from the geomembrane for cement pit, but one A complete tube-in-tube structure, when use, not will produce fold, need not also be bonded, and can be formed under the support of peripheral frame Open closing pond, material are food-grade PVC grid Tarpaulings, and size is consistent with circulating water pool frame；It is described simple The erection sequence of formula raceway pond is：(1) strut 6 is utilized to fix the bottom margin of straight channel wall 1, curved flow path wall 2 and flow blocking wall 3； (2) raceway pond liner is fixed on circulating water pool frame；(3) utilize strut 6 fix straight channel wall 1, curved flow path wall 2 and every Flow the top edge of wall 3；(4) upper in straight channel that agitating paddle 4 is installed and is connected to variable speed electric motors, particularly 5；(5) in curved runner Liquid impellers 7 are installed respectively with curved runner and straight channel joining place.

Plain type raceway pond according to the present utility model, wherein the racetrack liner by draw point and self-sealed article or The mode of pipe collar is fixed with circulating water pool frame.

Plain type raceway pond according to the present utility model, wherein the PVC grid Tarpauling thickness be 0.5mm~ 0.9mm is usually used in the project construction that outdoor swimming pool and amusement on water etc. are in direct contact with application on human skin, have it is solid, low temperature resistant and High temperature, nontoxic feature.

Plain type raceway pond according to the present utility model, wherein the straight channel wall 1, curved flow path wall 2 are by stainless steel tube It is welded with stainless steel mesh sheet, highly 1.2~2 times for medium depth；The straight channel wall 1 and curved flow path wall 2 it is upper Lower edge is stainless steel tube, and centre is stainless steel mesh sheet；The stainless steel tube wall thickness be 1mm~2mm, a diameter of 10mm~ 50mm；The stainless steel mesh sheet string diameter is 1mm~2mm, and mesh specification is 2mm*2mm~10mm*10mm.

Plain type raceway pond according to the present utility model, wherein the straight channel wall 1, curved flow path wall 2 are by equal length Component splicing is welded, and 1 single component length of straight channel wall is 1m~5m；2 single component of curved flow path wall be semicircle 1/6~ 1/2。

Plain type raceway pond according to the present utility model, wherein the length and height and straight channel wall 1 of the flow blocking wall 3 Length and highly consistent, thickness is 10cm~50cm；The flow blocking wall 3 equally by stainless steel tube and stainless steel mesh sheet welding and At being then spliced by the component of equal length, single component length is consistent with 1 single component length of straight channel wall；

Plain type raceway pond according to the present utility model, wherein the flow blocking wall 3 and straight channel wall 1,2 groups of curved flow path wall At racetrack frame, frame size is the arbitrary dimension of racetrack shape, and specification is consistent with raceway pond commonly used in the art.

Plain type raceway pond according to the present utility model, wherein the strut 6 is that specification is wall thickness 1mm~2mm, diameter For 10mm~50mm, length is equal to the stainless steel tube of the width either radius of curved runner of straight channel.

Plain type raceway pond according to the present utility model, wherein the strut 6 have it is multigroup, bearing be straight channel The joining place and flow blocking wall 3 of wall 1, curved flow path wall 2, the single component joining place of flow blocking wall 3, straight channel wall 1 and curved flow path wall 2 Both ends；The fixed form is welding or is fixed by screw-nut.

Plain type raceway pond according to the present utility model, wherein the liquid impellers 7 are that the Shui nationality make wave with magnetic-type Pump, power are 5W~60W, have the characteristics that mute, low energy consumption, low-shearing force；The liquid impellers 7 are mounted on culture medium Liquid level is hereinafter, depth is 0.5~1.0 times of liquid depth.

Plain type raceway pond according to the present utility model, wherein the liquid impellers 7 may be mounted at curved runner with it is straight Any position in runner junction or curved runner, also can root when straight channel length is long or cultivated algae is easier to precipitation According to any position for needing to be mounted on straight channel.

The plain type raceway pond of the utility model can be used in each in open, semi open model or indoor scale culture The various microalgaes such as kind microalgae, including spirulina, scenedesmus, haematococcus pluvialis, salt algae, chlorella, chlamydomonas.

The utility model has the advantages that：(1) the raceway pond frame of the utility model, structure is simple, solid, side Just it dismantles, is easy amplification, corresponding size can be determined according to actual place；(2) the raceway pond liner of the utility model is one Complete tube-in-tube structure, when use, not will produce fold, need not also be bonded, can effectively avoid leakage, consisting of food Grade material, heavy metal pollution risk when can avoid using cement or geomembrane；(3) liquid impellers of the utility model Agitating paddle can be coordinated to use, have the characteristics that significantly reduce liquid mixing energy consumption, while frustule being avoided to precipitate, to advantageous In raising area yield.

Description of the drawings

Fig. 1 is the plain type raceway pond vertical view of the utility model；

Fig. 2 is the vertical view of the plain type raceway pond raceway pond frame of the utility model；

Fig. 3 is the stereoscopic schematic diagram of the plain type raceway pond raceway pond frame of the utility model；

Fig. 4 is the plain type raceway pond longitudinal direction side view of the utility model；

Fig. 5 is the structure chart for forming raceway pond frame single component.

Reference numeral：

A raceway pond frames；B raceway pond liners；

1 straight channel wall；2 curved flow path walls；3 flow blocking walls；4 agitating paddles；5 variable speed electric motors, particularlies；6 struts；7 liquid impellers.

Specific implementation mode

Embodiment 1

Use area for 200m²Plain type raceway pond carry out spirulina culture.Specifically building mode is：Using diameter The stainless steel mesh sheet of 3cm, the stainless steel tube of wall thickness 2mm and string diameter 2mm, mesh 6.4cm*6.4cm are welded into straight channel wall, curved stream The single component of road wall and flow blocking wall, strut specification are diameter 3cm, wall thickness 2mm；Wherein direct current Taoist priest 35m, straight channel width 2.3m, curved runner radius 2.5m, flow blocking wall width 0.4m, raceway pond frame A and raceway pond liner B height are 0.6m, straight channel The single component length of wall and flow blocking wall is 5m, the length of curved flow path wall single component is the 1/2 of semicircle；It is fixed using self-sealed article Liner and frame fix strut and straight channel wall, curved flow path wall and flow blocking wall in the form of screw-nut；Using the liquid of 10W Body propeller is mounted remotely from the three curved runners and straight channel joining place of agitating paddle, and setting angle θ is 45 °, and fitting depth is The 1/2 of liquid depth.

Algae is blunt top spirulina (Spirulina Platensis), comes from aquatile institute of Chinese Academy of Sciences algae Kind of library, number is 439, and culture medium is Zarrouk culture mediums, and the mean depth of culture medium is 20cm in raceway pond, and frustule connects Kind density 0.3g (dry weight)/L.It adjusts variable speed electric motors, particularly and so that the flow velocity of culture solution in raceway pond is 15cm/s or so, open simultaneously Three liquid impellers.

The concentration of the nutritive salt of timing detection daily is simultaneously replenished in time, and supplements a small amount of water to make up the evaporating loss of water.It holds Continuous culture 7 days, algae cell density reach 0.7g (dry weight)/L, the yield of unit area frustule reach 13.3g (dry weight)/ m²·d.Obtain the conventional ingredient of spirulina, the composition and content and document report base of amino acid, aliphatic acid and carotenoid This is consistent, and the toxic heavy-metal elements such as mercury, chromium are not detected.Stirring power consumption and liquid impellers power consumption are total up to 1.10W/m²。

And same raceway pond is used, adjusting variable speed electric motors, particularly makes the flow velocity of culture solution in raceway pond be 25cm/s or so, Do not open three liquid impellers, under similarity condition, the yield of the unit area frustule of culture 7 days be 13.1g (dry weight)/ m²D, and it is 1.53W/m to stir power consumption²。

Embodiment 2

Other are the same as embodiment 1.Algae is dimorphism scenedesmus (Scenedesmus dimorphus), comes from Chinese Academy of Sciences's water Biology institute's fresh water algae library, number is 496.With BG11 medium culture dimorphism scenedesmus, the depth of culture solution is 20cm, and algae is thin Born of the same parents' inoculum density 0.3g (dry weight)/L.It adjusts variable speed electric motors, particularly and so that the flow velocity of culture solution in raceway pond is 20cm/s or so, simultaneously Open three liquid impellers.

The concentration of the nutritive salt of timing detection daily is simultaneously replenished in time, and is periodically passed through CO₂, and a small amount of water is supplemented to make up water Evaporating loss.It persistently cultivates 7 days, algae cell density reaches 0.65g (dry weight)/L, and the yield of unit area frustule reaches 10.0g (dry weight)/m²·d.It obtains the composition of the conventional ingredient of dimorphism scenedesmus, amino acid, aliphatic acid and carotenoid and contains Amount is almost the same with document report, and the toxic heavy-metal elements such as mercury, chromium are not detected.Stir power consumption and liquid impellers power consumption in total For 1.36W/m²。

And same raceway pond is used, adjusting variable speed electric motors, particularly makes the flow velocity of culture solution in raceway pond be 30cm/s or so, Do not open three liquid impellers, under similarity condition, the yield of the unit area frustule of culture 7 days be 10.1g (dry weight)/ m²D, and it is 1.77W/m to stir power consumption²。

Embodiment 3

Use area for 600m²Plain type raceway pond carry out spirulina culture.Specifically building mode is：Using diameter The stainless steel mesh sheet of 3cm, the stainless steel tube of wall thickness 2mm and string diameter 2mm, mesh 6.4cm*6.4cm are welded into straight channel wall, curved stream The single component of road wall and flow blocking wall, strut specification are diameter 3cm, wall thickness 2mm；Wherein direct current Taoist priest 115m, straight channel width 2.3m, curved runner radius 2.5m, flow blocking wall width 0.4m, raceway pond frame A and raceway pond liner B height are 0.6m, straight channel The single component length of wall and flow blocking wall is 5m, the length of curved runner single component is the 1/2 of semicircle；In being fixed using self-sealed article Lining and frame fix strut and straight channel wall, curved flow path wall and flow blocking wall in the form of screw-nut；Using the liquid of 30W Propeller is mounted remotely from the three curved runners and straight channel joining place of agitating paddle, and setting angle θ is 60 °, and fitting depth is liquid The 1/2 of body depth.

Algae is blunt top spirulina (Spirulina Platensis), comes from aquatile institute of Chinese Academy of Sciences algae Kind of library, number is 439, and culture medium is Zarrouk culture mediums, and the mean depth of culture medium is 20cm in raceway pond, and frustule connects Kind density 0.3g (dry weight)/L.It adjusts variable speed electric motors, particularly and so that the flow velocity of culture solution in raceway pond is 15cm/s or so, open simultaneously Three liquid impellers.

The concentration of the nutritive salt of timing detection daily is simultaneously replenished in time, and supplements a small amount of water to make up the evaporating loss of water.It holds Continuous culture 12 days, algae cell density reach 0.9g (dry weight)/L, the yield of unit area frustule reach 10.2g (dry weight)/ m²·d.Obtain the conventional ingredient of spirulina, the composition and content and document report base of amino acid, aliphatic acid and carotenoid This is consistent, and the toxic heavy-metal elements such as mercury, chromium are not detected.Stirring power consumption and liquid impellers power consumption are total up to 1.70W/m²。

And same raceway pond is used, adjusting variable speed electric motors, particularly makes the flow velocity of culture solution in raceway pond be 25cm/s or so, Do not open three liquid impellers, under similarity condition, the yield of the unit area frustule of culture 9 days be 9.7g (dry weight)/ m²D, and it is 1.83W/m to stir power consumption²。

Embodiment 4

Other are the same as embodiment 3.Algae is dimorphism scenedesmus (Scenedesmus dimorphus), comes from Chinese Academy of Sciences's water Biology institute's fresh water algae library, number is 496.With BG11 medium culture dimorphism scenedesmus, the depth of culture solution is 20cm, and algae is thin Born of the same parents' inoculum density 0.3g (dry weight)/L.It adjusts variable speed electric motors, particularly and so that the flow velocity of culture solution in raceway pond is 20cm/s or so, simultaneously Open three liquid impellers.

The concentration of the nutritive salt of timing detection daily is simultaneously replenished in time, and is periodically passed through CO₂, and a small amount of water is supplemented to make up water Evaporating loss.It persistently cultivates 9 days, algae cell density reaches 0.88g (dry weight)/L, and the yield of unit area frustule reaches 12.8g (dry weight)/m²·d.It obtains the composition of the conventional ingredient of dimorphism scenedesmus, amino acid, aliphatic acid and carotenoid and contains Amount is almost the same with document report, and the toxic heavy-metal elements such as mercury, chromium are not detected.Stir power consumption and liquid impellers power consumption in total For 1.76W/m²。

And same raceway pond is used, adjusting variable speed electric motors, particularly makes the flow velocity of culture solution in raceway pond be 30cm/s or so, Do not open three liquid impellers, under similarity condition, the yield of the unit area frustule of culture 7 days be 10.1g (dry weight)/ m²D, and it is 2.05W/m to stir power consumption²。

Claims (7)

1. a kind of plain type raceway pond for microdisk electrode, it is characterised in that：The raceway pond include raceway pond liner (B) and Raceway pond frame (A), wherein raceway pond frame (A) include straight channel wall (1), curved flow path wall (2), flow blocking wall (3), agitating paddle (4), variable speed electric motors, particularly (5), strut (6) and liquid impellers (7)；The straight channel wall (1) and curved flow path wall (2) and flow blocking wall (3) the circulating water pool frame of raceway pond is formed；The strut (6) is for connecting flow blocking wall (3) and straight channel wall (1) and curved runner Wall (2), is located at top and the bottom of pond of raceway pond, and length is equal to the width of straight channel wall (1) and the straight channel of flow blocking wall (3) composition Or the radius of curved flow path wall (2) and the curved runner of flow blocking wall (3) composition；The agitating paddle (4) is located in straight channel, and one end is solid Due on flow blocking wall (3), the other end is connect with variable speed electric motors, particularly (5), and rotation is to push liquid under the drive of variable speed electric motors, particularly (5) Flowing；The liquid impellers (7) are separately mounted near curved runner and the joining place of straight channel or in curved runner, It is at angle theta with liquid flow direction, wherein 0<θ<90°；The raceway pond liner (B) is a complete tube-in-tube structure, is used When not will produce fold, need not also be bonded, open closing pond can be formed under the support of peripheral frame, material is Food-grade PVC grid Tarpaulings, size are consistent with circulating water pool frame.

2. being used for the plain type raceway pond of microdisk electrode according to claim 1, it is characterised in that：The racetrack liner (B) it is fixed with circulating water pool frame by way of drawing point and self-sealed article or pipe collar；The PVC grid Tarpauling thickness is 0.5mm~0.9mm.

3. being used for the plain type raceway pond of microdisk electrode according to claim 1, it is characterised in that：The straight channel wall (1), Curved flow path wall (2) is welded by stainless steel tube and stainless steel mesh sheet, highly 1.2~2 times for medium depth；It is described straight The lower edges of flow path wall (1) and curved flow path wall (2) are stainless steel tubes, and centre is stainless steel mesh sheet；The stainless steel tube wall thickness For 1mm~2mm, a diameter of 10mm~50mm；The stainless steel mesh sheet string diameter be 1mm~2mm, mesh specification be 2mm*2mm~ 10mm*10mm；The straight channel wall (1), curved flow path wall (2) are welded by the component splicing of equal length, straight channel wall (1) Single component length is 1m~5m；Curved flow path wall (2) single component is the 1/6~1/2 of semicircle.

4. being used for the plain type raceway pond of microdisk electrode according to claim 1, it is characterised in that：The flow blocking wall (3) Length and height and the length of straight channel wall (1) and highly consistent, thickness is 10cm~50cm；The flow blocking wall (3) is by stainless Steel pipe and stainless steel mesh sheet are welded, and are then spliced by the component of equal length, single component length and straight channel wall (1) single component length is consistent.

5. being used for the plain type raceway pond of microdisk electrode according to claim 1, it is characterised in that：The flow blocking wall (3) with Straight channel wall (1), curved flow path wall (2) form racetrack frame, and frame size is the arbitrary dimension of racetrack shape, specification and sheet The common raceway pond in field is consistent.

6. being used for the plain type raceway pond of microdisk electrode according to claim 1, it is characterised in that：The strut (6) is rule Lattice are wall thickness 1mm~2mm, a diameter of 10mm~50mm, and length is equal to the radius of the width either curved runner of straight channel not Become rusty steel pipe；The strut (6) have it is multigroup, bearing be straight channel wall (1), curved flow path wall (2), flow blocking wall (3) it is single The joining place and flow blocking wall (3) both ends of component joining place, straight channel wall (1) with curved flow path wall (2)；The fixed form is Welding is fixed by screw-nut.

7. being used for the plain type raceway pond of microdisk electrode according to claim 1, it is characterised in that：The liquid impellers (7) it is that the Shui nationality make unrestrained pump with magnetic-type, power is 5W~60W, has the characteristics that mute, low energy consumption, low-shearing force；The liquid Body propeller (7) is mounted on culture medium liquid level hereinafter, depth is 0.5~1.0 times of liquid depth, may be mounted at curved runner with Any position in straight channel junction or curved runner also may be used when straight channel length is long or cultivated algae is easier to precipitation It is mounted on any position of straight channel as needed.