Eutrophication control using modified local soil-induced ecological restoration technology; III, The effect of emergency mitigation on black spots

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doi: 10.18307/2013.0305
Authors:Dai Lichun; Pan Gang; Li Liang; Li Hong; Bi Lei; Shang Yuanyuan; Wang Lijing; Wang Dan; Zhang Honggang; Li Qiaoxia; Gu Xiaozhi; Zhong Jicheng
Author Affiliations:Primary:
Chinese Academy of Sciences, Beijing, China
Volume Title:Hupo Kexue Journal of Lake Sciences
Source:Hupo Kexue = Journal of Lake Sciences, 25(3), p.342-346. Publisher: Science Press, Beijing, China. ISSN: 1003-5427
Publication Date:2013
Note:In Chinese with English summary. 19 refs.; illus.
Summary:Modified local soil-induced ecological restoration (MLS-IER) technology was tested to alleviate an organoleptic problem and water quality deterioration originating from "black spots". The lab study shows that chitosan-modified local soil was more effective than PAC in the mitigation of black substances in the water, turbidity was reduced from >2000 NTU in the control to 5 NTU with a 55 mg/L MLS dosage, and capping with soil or sand reduced the re-suspension flock for black spots. A field pilot study shows that, 30 min after MLS-IER treatment, nutrient levels (TN and TP) decreased by 97%, MIB and DMTS odor compounds decreased by >75%, and the DO of the surface and base water increased by 75% and 183.5%, respectively. MLS technology provides an in-situ strategy to alleviate the negative effects of black spots.
Subjects:Controls; Ecology; Eutrophication; Experimental studies; Lakes; Mitigation; Pollution; Remediation; Soils; Technology; Water pollution; Asia; China; Far East; Jiangsu China; Taihu Lake
Coordinates:N305500 N313500 E1203500 E1195500
Record ID:2017042659
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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