DPL Announce a cost-effective solution for microalgae cultivation. To overcome the low productivity, we designed this integrated bioreactor(Patent pending) with the underwater rotary LED light source with adjustable wavelength. The internal light reduces the distance between the light source and microalgae, effectively enhancing the light transmission. Our goal is that this light source can provide 300-400 par allover the cultivation solution which meat the light intensity requirement for max productivity.

1. IntegratedCylindrical
Bioreactor with
underwater LED light
source
Authors of the presentation:
Henrik Lindskov,Yan Xia (DPL Industri A/S Denmark)
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2. Why
Microalgae?
-a potential
source for a
wide range of
novel high-
value products
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3. What is
microalgae
cultivation?
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4. What is the
problem now?
-Low
productivity &
high cost
Cultivation Method Average Productivity
(g/l/day)
Cost
(EUR/M3)
Raceway 0.1 200
Flat Panel Bioreactor 0.6 3000
Tubular Bioreactor 1.0 5000
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OPEN RACEWAY Tubular Bioreactor Tubular Bioreactor

5. Why low
productivity?
-Limited light
energy in
cultivation
solution
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6. Open
Raceway:
-TheCheapest
solution in the
market
 Open raceways are low capital investment with low
power consumption, but also low productivity rate.
6

7. Flat panel
Bioreactor
Flat panel method is lower power
consumption, but the material cost is
also higher.
7

8. Tubular
production
-most popular
method in the
market
 there are problems with not only oxygen accumulation
bit also carbon limitation and PH variation along large
tube lengths, therefore, the diameter of tube should
not exceed 0.1m.
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9. OurChallenge:
How light
energy go
through this?
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10. Why DPL?
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Experienced
engineering
design
The oldest UV system
manufacture in Europe
Pattern owner of
cold UV technology
Innovator of LED
module designer
DPL

11. Our Idea
-Intelligent
Integrated
Bioreactor
with Rotary
underwater
light source
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12. 12
How Underwater Rotary Light SourceWork?

13. What is
underwater light
source?
- LED with
specific
wavelength
-Energy output:
100-400par
13

14. What is our
feature:
-1. DPL own
design LED
Module with
specific
wavelength and
transmission
lens
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15. Feature 2:
Stable and
uniform
distribution of
light energy in
reactor
15
Over-Demand Less-Demand
Dynamic
Balance
Diffusion LightTransmission

16. Feature 3:
-Controlled
environment
with stable
temperature,
flow and
nutrientC02
input
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Integrated PLC Control System
Temperature:
25-26 C
Co2
Flow Nutrient

17. Feature 4:
-A low-cost
energy saving
equipment
suitable for
large-scale
production
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Heat
Exchanger

18. Feature 5:
- Ready for
additional
devices
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Bioreactor
Harvest
Purification
Downstream
Process
Waster water
System
Power Station

19. What is our
expected
result: A demo
bioreactor
with fully
controlled
cultivation
environment
for microalgae.
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Integrated Bioreactor
Temperature:
25-26 C
PHValue:
11
Light Energy:
100-400par
Productivity
Evaluation

20. Where can you
use it?
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Laboratory
Application
Production Application:
Light source for open
raceway

21. Company
Culture
Innovation is not just the dream of
young people.
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Thanks