期刊
ECOLOGICAL ENGINEERING
卷 54, 期 -, 页码 57-65出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ecoleng.2013.01.017
关键词
Constructed wetland; Substrate; Swine wastewater; Phosphorus; Oyster shell
资金
- Xiamen Municipal Bureau of Science and Technology [3502Z20101010]
- Science and Technology Planning Project of Xiamen City, China [3502Z20112018]
- Special Fund of the State Key Joint Laboratory of Environment Simulation and Pollution Control [12K06ESPCT]
- Provincial Science Foundation of Fujian [2012J01241]
- Key Project of the Fujian Provincial Science & Technology Program [2012Y0068]
This study evaluated the physicochemical properties and phosphorus adsorption capacities for oyster shell (OS), broken bricks, volcanics, and zeolite when used as substrates for swine wastewater treatment. All substrates, with the exception of volcanics, proved to be appropriate for microorganism and plant growth enrichment within water treatment systems. Meanwhile, phosphorus adsorption tests indicated that OS was most effective in phosphorus removal. Significant phosphorus removal was achieved in pilot tests when OS was used as a substrate in vertical-flow wetlands treating swine wastewater from an anaerobic tank. The pilot tests also indicated that both soluble reactive phosphorus (SRP) and total phosphorus (TP) removal rates increased when the HRT was prolonged. Overall, the study results showed that OS could be used for phosphorus removal in constructed wetlands, and such use carries the added benefits of reuse of a by-product that promotes sustainbility. (C) 2013 Elsevier B.V. All rights reserved.
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