Treatment of olive mill wastewater in pilot-scale vertical flow constructed wetlands
Treatment of olive mill wastewater in pilot-scale vertical flow constructed wetlands
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DOI：
10.1016/j.ecoleng.2011.01.018
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发表时间：
2011-06-01
影响因子：
3.8
通讯作者：
Vayenas, Dimitrios V.
中科院分区：
文献类型：
--
作者：
Herouvim, Elissavet;Akratos, Christos S.;Vayenas, Dimitrios V.
中试规模的人工湿地（CW）的构建和运行处理预处理橄榄磨坊废水。中试规模的单位，包括三个相同的系列与四个中试规模的垂直流CW在一个收获季节，在希腊橄榄工厂。中试规模的CW填充有各种多孔介质（即，卵石、砾石和沙子）。两个系列的中试规模的单位种植了共同的芦苇和第三个（对照）是unplanted。进水COD、酚类、正磷酸盐、氨氮和TKN的平均浓度分别为14，120 mg/L、2841 mg/L、95 mg/L、123 mg/L和506 mg/L。尽管相当高的进水浓度，CW单元的性能是非常有效的，因为它实现了约70%，70%，75%和87%的COD，酚，TKN和正磷酸盐，分别去除。COD，苯酚和TKN的去除似乎是显着较高的种植系列，而正磷酸盐的去除显示三个系列之间没有显着差异。温度和污染物表面负荷似乎影响所有污染物的去除效率。与以前的研究相比，这里应用的污染物表面负荷更高（一个或两个数量级）。尽管去除效率很高，但流出的污染物浓度仍然很高，因此无法将其用于灌溉或直接排入环境。皇冠版权所有（C）2011由Elsevier B. V.出版。保留所有权利。
Pilot-scale constructed wetlands (CW) were constructed and operated to treat pre-treated olive mill wastewater. Pilot-scale units comprising three identical series with four pilot-scale vertical flow CWs were operated for one harvest season in a Greek olive mill plant. The pilot-scale CWs were filled with various porous media (i.e., cobble, gravel, and sand) of different gradations. Two series of pilot-scale units were planted with common reeds and the third (control) was unplanted. Mean influent concentrations were 14,120 mg/L, 2841 mg/L, 95 mg/L, 123 mg/L and 506 mg/L for COD, phenols, ortho-phosphate, ammonia and TKN, respectively. Despite the rather high influent concentrations, the performance of the CW units was very effective since it achieved removals of about 70%, 70%, 75% and 87% for COD, phenols, TKN and ortho-phosphate, respectively. COD, phenol and TKN removal seems to be significantly higher in the planted series, while ortho-phosphate removal shows no significant differences among the three series. Temperature and pollutant surface load seem to affect the removal efficiency of all pollutants. Compared to previous studies, pollutant surface loads applied here were higher (by one or two orders of magnitude). Even though high removal efficiencies were achieved, effluent pollutant concentrations remained high, thus preventing their use for irrigation or immediate disposal into the environment. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.