Advanced Pond Design

2014 ◽  
pp. 141-147
Keyword(s):  
Pond Design

scholarly journals A Comparison ofNannochloropsis salinaGrowth Performance in Two Outdoor Pond Designs: Conventional Raceways versus the ARID Pond with Superior Temperature Management

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Braden Crowe ◽  
Said Attalah ◽  
Shweta Agrawal ◽  
Peter Waller ◽  
Randy Ryan ◽  
...  
Keyword(s):  
Culture System ◽  
Light Exposure ◽  
Fatty Acid Content ◽  
Integrated Design ◽  
Climatic Conditions ◽  
Temperature Management ◽  
Nannochloropsis Salina ◽  
Batch Cultures ◽  
Cell Densities ◽  
Pond Design

The present study examines how climatic conditions and pond design affect the growth performance of microalgae. From January to April of 2011, outdoor batch cultures ofNannochloropsis salinawere grown in three replicate 780 L conventional raceways, as well as in an experimental 7500 L algae raceway integrated design (ARID) pond. The ARID culture system utilizes a series of 8–20 cm deep basins and a 1.5 m deep canal to enhance light exposure and mitigate temperature variations and extremes. The ARID culture reached the stationary phase 27 days earlier than the conventional raceways, which can be attributed to its superior temperature management and shallower basins. On a night when the air temperature dropped to −9°C, the water temperature was 18°C higher in the ARID pond than in the conventional raceways. Lipid and fatty acid content ranged from 16 to 25% and from 5 to15%, respectively, as a percentage of AFDW. Palmitic, palmitoleic, and eicosapentaenoic acids comprised the majority of fatty acids. While the ARID culture system achieved nearly double the volumetric productivity relative to the conventional raceways (0.023 versus 0.013 g L−1day−1), areal biomass productivities were of similar magnitude in both pond systems (3.47 versus 3.34 g m−2day−1), suggesting that the ARID pond design has to be further optimized, most likely by increasing the culture depth or operating at higher cell densities while maintaining adequate mixing.

scholarly journals Umbrella Labyrinth Sedimentation Device Study

2020 ◽  
Vol 4 (4) ◽  
Author(s):  
Shuisheng Wang
Keyword(s):  
Water Quality ◽  
Vertical Direction ◽  
Mutual Interference ◽  
Water Diversion ◽  
Swash Plate ◽  
Parallel Axis ◽  
The Stability ◽  
Combination Mode ◽  
Vertical Height ◽  
Pond Design

Umbrella-type mud-water diversion labyrinth sedimentation device, which is characterized by the combination of two swash plate and wing plate into an umbrella type with a set angle, the angle range of the two swash plate is 15º--100º, the vertical height of the swash plate is 60-70 mm, the parallel axis of the wing plate is the vertical direction, the height is 10-20 mm. the whole adopts the modular combination mode, and can be freely combined and disassembled according to different pond design, swash plate The interval (sedimentation distance) can be freely adjusted, mud take the mud road and water take the water road, to avoid the mutual interference of the water and mud road, to achieve the stability of the water quality. The turbidity of the sedimentation pond is low, stable in 0.3-2.0 NTU.

Climate, Site, and Pond Design

2017 ◽  
pp. 109-133
Author(s):  
Anita M. Kelly ◽  
Christopher C. Kohler
Keyword(s):  
Pond Design
Sign in / Sign up

Export Citation Format

Share Document