Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan, ROC.
Mar Pollut Bull. 2011 Jul;62(7):1455-63. doi: 10.1016/j.marpolbul.2011.04.015. Epub 2011 May 11.
This study established wetland microcosms that were either unplanted or planted in monoculture with native mangrove species in Taiwan (Avicennia marina, Rhizophora stylosa, and Lumnitzera racemosa) for the purpose of receiving high-salinity mariculture effluents; additionally, the microcosms operated at different hydraulic retention times (HRTs). Plant growth and the performance of the microcosms with respect to pollutant removal were investigated. The results showed that seedlings of all three mangrove species survived and grew sufficiently well under continuous flooding. The presence of mangroves consistently improved SS, BOD(5), and TP removal, particularly under short HRT conditions. The mangrove microcosms removed pollutants from the mariculture effluents with efficiencies of 5.7-27.1% (SS), 4.9-36.3% (BOD(5)), 18.7-29.9% (TP), 21.2-49.8% (NH(4)-N), and 5.4-37.7% (NO(x)-N). A. marina and L. racemosa were more tolerant of continuous flooding than R. stylosa. However, no species displayed consistently superior performance in decreasing all pollutant-related parameters investigated. For all pollutants, microcosms operating at a 2-d HRT exhibited a higher removal efficiency than those operating at a 0.5-d HRT.
本研究建立了湿地微宇宙，这些微宇宙要么没有种植，要么以台湾本地红树林物种（海茄苳、红海榄和角果木）进行单一种植，用于接收高盐度海水养殖废水；此外，这些微宇宙还在不同水力停留时间（HRT）下运行。研究了植物生长和微宇宙对污染物去除的性能。结果表明，所有三种红树林物种的幼苗在连续淹没条件下均能存活并生长良好。红树林的存在始终能提高悬浮物（SS）、五日生化需氧量（BOD5）和总磷（TP）的去除率，特别是在短 HRT 条件下。红树林微宇宙从海水养殖废水中去除污染物的效率为 5.7-27.1%（SS）、4.9-36.3%（BOD5）、18.7-29.9%（TP）、21.2-49.8%（NH4-N）和 5.4-37.7%（NOx-N）。海茄苳和角果木比红海榄更能耐受连续淹没。然而，没有一种物种在降低所有调查的污染物相关参数方面表现出始终优于其他物种的性能。对于所有污染物，2 天 HRT 运行的微宇宙比 0.5 天 HRT 运行的微宇宙具有更高的去除效率。
