Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China.
Water Sci Technol. 2013;67(10):2265-72. doi: 10.2166/wst.2013.105.
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.
我们测试了牡蛎壳（OS）作为人工湿地（CWs）中处理猪废水的磷去除基质的适宜性。OS 被证明具有显著的磷吸附能力；在垂直潜流人工湿地（VSSFs）中填充 OS 并用于处理猪废水，可实现显著的磷去除。在 VSSF 系统中，OS 吸附和沉淀在磷去除中起着最大的作用，基质层中的磷分布归因于系统中废水的垂直流动状态。Ca-P 是系统中磷的主要形式。总体而言，研究结果表明，OS 可用于 CWs 中的磷去除。OS 还允许废物的再利用，使整个系统更加环保。
