title: Study of oyster shell as a potential substrate for constructed wetlands.
abstract: We tested the suitability of oyster shell (OS) as a substrate for phosphorus removal in constructed wetlands (CWs) treating swine wastewater. OS is proven to have a significant phosphorus adsorption capacity; significant phosphorus removal was achieved in vertical subsurface flow constructed wetlands (VSSFs) that were filled with OS and used to treat swine wastewater. In the VSSF system, OS adsorption and precipitation played the greatest role in phosphorus removal, and the phosphorus distribution in the substrate layers was attributed to the vertical flow state of wastewater in the system. Ca-P was the predominant form of phosphorus in the system. Overall, the study results showed that OS could be used for phosphorus removal in CWs. OS also allowed for reuse of a waste substance, making the overall system more environmentally friendly.
authors.affiliation: Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Dong
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.forename: Gefu
authors.initials: G
authors.lastname: Zhu
authors.forename: Chaoxiang
authors.initials: C
authors.lastname: Liu
mesh_terms: D060105:Animal Shells; D000818:Animals; D010125:Ostreidae; D010758:Phosphorus / Q000302:isolation & purification; D062065:Wastewater; D053833:Wetlands
chemical_list: D010758:Phosphorus; D062065:Wastewater