Processes impacting on benzene removal in vertical-flow constructed wetlands

被引：37

作者：

Tang, Xianqiang ^{[2
]}

Eke, Paul Emeka ^{[1
]}

Scholz, Miklas ^{[1
]}

Huang, Suiliang ^{[2
]}

机构：

[1] Univ Edinburgh, Inst Infrastruct & Environm, Sch Engn & Elect, Edinburgh EH9 3JN, Midlothian, Scotland

[2] Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Fertilizer; Petroleum; Regression analysis; Simulation; Water quality; ORGANOCHLORINE COMPOUNDS; VOLATILIZATION RATES; WASTE-WATER; INDUSTRIAL; BIOREMEDIATION; HYDROCARBONS; EFFICIENCY; MUNICIPAL; NITROGEN; MIXTURE;

D O I：

10.1016/j.biortech.2008.05.038

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The overall aim of this research project was to reduce low molecular weight hydrocarbons such as benzene in produced wastewaters. Over 30 months of research was conducted to test the treatment performance in terms of benzene removal in vertical-flow constructed wetlands. Based on an influent concentration of 1 g L-1 benzene, the results show mean benzene removal efficiencies between 88.71 % and 89.77%, and 72.66% and 80.46% for indoor and outdoor constructed wetlands, respectively. A statistical analysis indicated that the five days at 20 degrees C N-allylthiourea biochemical oxygen demand (BOD5), chemical oxygen demand (COD), nitrate-nitrogen (NO3-N), dissolved oxygen (DO) and electric conductivity (EC) values of the effluent were positively correlated with the effluent benzene concentrations following the order COD > DO > EC > NO3-N > BOD5, and negatively correlated according to the order pH > redox potential (redox) > temperature (T) > turbidity. No strong relationships between benzene and the variables ortho-phosphate-phosphorus (PO43-) and ammonia-nitrogen (NH4-N) were recorded. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：227 / 234

页数：8

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