[Pilot-scale study on riparian Scirpus yagara Ohw zone improving water quality of river].
In one year polluted water was treated with Scirpus yagara Ohw to investigate its impact on river water quality in pilot scale test, and COD, NH4(+) -N, TP, turbidity and water temperature were tested. The results show that the Scirpus yagara Ohw gives better water quality in summer and autumn than in winter and spring. In summer, the Scirpus yagara Ohw zone removes 44.10% of the COD, 78.66% of the ammonia, 69.44% of the phosphorous, and 99.53% of the turbidity. It also can improve water quality to some extent in winter. The Scirpus yagara Ohw can reduce effluent temperature and effluent temperature difference between evening and morning and then improve water microenvironment locally. Comparisons between the Scirpus yagara Ohw riparian zone and control zone showed that the Scirpus yagara Ohw affects importantly on removing pollutants, improving local microenvironment of water.
Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. liruihua@nju.edu.cn
Rui-Hua
RH
Li
Yun-Tao
YT
Guan
Miao
M
He
Hong-Ying
HY
Hu
Zhan-Peng
ZP
Jiang
D001673:Biodegradation, Environmental; D029785:Cyperaceae / Q000254:growth & development / Q000378:metabolism*; D017753:Ecosystem; D005618:Fresh Water / Q000032:analysis; D010758:Phosphorus / Q000032:analysis / Q000378:metabolism; D010865:Pilot Projects; D000644:Quaternary Ammonium Compounds / Q000032:analysis / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
D000644:Quaternary Ammonium Compounds; D014874:Water Pollutants, Chemical; D010758:Phosphorus