TY - JOUR
T1 - Effect of combining adsorption-stripping treatment with acidification on the growth of Chlorella vulgaris and nutrient removal from swine wastewater
AU - Cao, Leipeng
AU - Zhou, Ting
AU - Li, Zihan
AU - Wang, Jingjing
AU - Tang, Juan
AU - Ruan, Roger
AU - Liu, Yuhuan
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/9
Y1 - 2018/9
N2 - After swine wastewater (SW) was treated with adsorption-stripping stage, the concentration of NH4 +-N and Total phosphorus (TP) in SW significantly decreased from 598.04, 42.95 to 338.02, 8.36 mg L−1, respectively. The concentration of heavy metals, especially Zn2+ (96.78%), decreased by the ion exchange of artificial zeolite (AZ). The acidification of SW could significantly improve the nutrient utilization efficiency and promote the growth rate of C. vulgaris due to the hydrolysis of macromolecular substances into smaller molecules usable for algae. By combining adsorption (Part I), stripping (Part II) and cultivation (Part III), the highest removal rates of NH4 +-N, TP, chemical oxygen demand (COD) and total organic carbon (TOC) from SW were 80.50, 96.90, 72.91, and 84.17%, respectively, and the OD680 value was 1.129 (1.48 times of control) at pH 6.0. The combined system (Part I-III) can significantly enhance the removal efficiency of nutrient and biomass production by acidification.
AB - After swine wastewater (SW) was treated with adsorption-stripping stage, the concentration of NH4 +-N and Total phosphorus (TP) in SW significantly decreased from 598.04, 42.95 to 338.02, 8.36 mg L−1, respectively. The concentration of heavy metals, especially Zn2+ (96.78%), decreased by the ion exchange of artificial zeolite (AZ). The acidification of SW could significantly improve the nutrient utilization efficiency and promote the growth rate of C. vulgaris due to the hydrolysis of macromolecular substances into smaller molecules usable for algae. By combining adsorption (Part I), stripping (Part II) and cultivation (Part III), the highest removal rates of NH4 +-N, TP, chemical oxygen demand (COD) and total organic carbon (TOC) from SW were 80.50, 96.90, 72.91, and 84.17%, respectively, and the OD680 value was 1.129 (1.48 times of control) at pH 6.0. The combined system (Part I-III) can significantly enhance the removal efficiency of nutrient and biomass production by acidification.
KW - Acidification
KW - Adsorption-stripping
KW - Chlorella vulgaris
KW - Nutrient removal
KW - Swine wastewater (SW)
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U2 - 10.1016/j.biortech.2018.04.094
DO - 10.1016/j.biortech.2018.04.094
M3 - Article
C2 - 29723844
AN - SCOPUS:85046151999
SN - 0960-8524
VL - 263
SP - 10
EP - 16
JO - Bioresource Technology
JF - Bioresource Technology
ER -
