scholarly journals Nutrient removal efficiency of lake wetlands:A case study of Sanshan Wetland in Lake Taihu, eastern China

2016 ◽  
Vol 28 (1) ◽  
pp. 124-131 ◽  
Author(s):  
WANG Yan ◽  
◽  
HUANG Jiacong ◽  
YAN Renhua ◽  
GAO Junfeng
Keyword(s):  
Removal Efficiency ◽  
Nutrient Removal ◽  
Lake Taihu ◽  
Eastern China ◽  
Nutrient Removal Efficiency

scholarly journals The Optimal Width and Mechanism of Riparian Buffers for Storm Water Nutrient Removal in the Chinese Eutrophic Lake Chaohu Watershed

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1489 ◽  
Author(s):  
Xiuyun Cao ◽  
Chunlei Song ◽  
Jian Xiao ◽  
Yiyong Zhou
Keyword(s):  
Removal Efficiency ◽  
Nutrient Removal ◽  
Eutrophic Lake ◽  
Riparian Buffers ◽  
Nutrient Level ◽  
Nitrification Rate ◽  
Lake Chaohu ◽  
Potential Nitrification ◽  
Different Types ◽  
Nutrient Removal Efficiency

Riparian buffers play an important role in intercepting nutrients entering lakes from non-point runoffs. In spite of its ecological significance, little is known regarding the underlying mechanisms of riparian buffers or their optimal width. In this study, we examined nutrient removal efficiency, including the quantity of nutrients and water quality, in the littoral zone of different types of riparian buffers in the watershed around eutrophic Lake Chaohu (China), and estimated the optimal width for different types of riparian buffers for effective nutrient removal. In general, a weak phosphorus (P) adsorption ability and nitrification-denitrification potential in soil resulted in a far greater riparian buffer demand than before in Lake Chaohu, which may be attributed to the soil degradation and simplification of cover vegetation. In detail, the width was at least 23 m (grass/forest) and 130 m (grass) for total P (TP) and total nitrogen (TN) to reach 50% removal efficiency, respectively, indicating a significantly greater demand for TN removal than that for TP. Additionally, wetland and grass/forest riparian buffers were more effective for TP removal, which was attributed to a high P sorption maximum (Qmax) and a low equilibrium P concentration (EPC0), respectively. The high potential nitrification rate (PNR) and potential denitrification rate (PDR) were responsible for the more effective TN removal efficiencies in grass riparian buffers. The nutrient removal efficiency of different types of riparian buffers was closely related with nutrient level in adjacent littoral zones around Lake Chaohu.

Nutrient removal efficiency and resource economics of vertical flow and horizontal flow constructed wetlands

2001 ◽  
Vol 18 (2) ◽  
pp. 157-171 ◽  
Author(s):  
Volker Luederitz ◽  
Elke Eckert ◽  
Martina Lange-Weber ◽  
Andreas Lange ◽  
Richard M Gersberg
Keyword(s):  
Removal Efficiency ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Resource Economics ◽  
Horizontal Flow ◽  
Vertical Flow ◽  
Nutrient Removal Efficiency

scholarly journals Assessment of Domestic Wastewaters as Potential Growth Media for Chlorella vulgaris and Haematococcus pluvialis

2022 ◽  
Vol 30 (1) ◽  
pp. 565-580
Author(s):  
Yeong Hwang Tan ◽  
Mee Kin Chai ◽  
Yang Kai Ooi ◽  
Ling Shing Wong
Keyword(s):  
Removal Efficiency ◽  
Chlorella Vulgaris ◽  
Nutrient Removal ◽  
Haematococcus Pluvialis ◽  
Biomass Concentration ◽  
Basal Medium ◽  
Domestic Wastewater ◽  
Chemical Compounds ◽  
Growth Media ◽  
Nutrient Removal Efficiency

Domestic wastewater contains chemical compounds that can be used as nutrients for microalgae. Removing these chemical compounds from wastewater by microalgae might help in reducing the operation cost of wastewater management while minimizing the cultivation cost for large-scale microalgae metabolite production. In this study, domestic wastewater collected from Indah Water Konsortium (IWK), Kuala Lumpur, Malaysia, was assessed as growth media for two types of microalgae, namely Chlorella vulgaris and Haematococcus pluvialis. The biomass growth and nutrient removal efficiency of total nitrogen (TN), total phosphorus (TP), and total ammonia (TAN) in different concentrations of diluted wastewater were measured. The results showed that biomass concentration (0.227 g/L), biomass productivity (0.029 g/L/day), and specific growth rate (0,284 d-1) yielded by C. vulgaris in 14 days of 80% wastewater were comparable to those microalgae grew in standard Bold’s Basal medium (BBM). Besides, C. vulgaris grew in 50% wastewater to remove TN, TP, and TAN with the highest removal efficiency (>88%). For H. pluvialis, the biomass concentration in all wastewater concentrations was lower than BBM. The removal efficiencies of TN and TP were lower than 55%, but more than 80% for removal efficiency of TAN in 50% and 80% wastewater. Hence, C. vulgaris has better growth performance and nutrient removal efficiency than H. pluvialis. These findings indicated that IWK domestic wastewater could be used as growth media for microalgae, especially C. vulgaris.

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