Remediation effects of used brick powder on nutrient-laden sediment

文献类型： 外文期刊

第一作者： Jia, Chenrong

作者： Jia, Chenrong;Dai, Yanran;Wang, Feihua;Liang, Wei;Li, Gu;Jia, Chenrong;Dai, Yanran

作者机构：

关键词： Used brick;Remediation effect;Nutrient-laden sediment;Optimal dosage

期刊名称：DESALINATION AND WATER TREATMENT （ 影响因子：1.254； 五年影响因子：1.553 ）

ISSN： 1944-3994

年卷期： 2016 年 57 卷 10 期

页码：

收录情况： SCI

摘要： Sediment is one of the major sources of internal pollution in lakes. Pollution control of contaminated sediment has become a hot topic in the world. In this paper, used brick powder was chosen as a passivator for remediating nutrient-laden sediment, and the relationships between brick powder dosages and pollutant indexes in the overlying water and sediments were determined. The results showed that in the overlying water, brick powder could be used to reduce total phosphorus (TP) concentrations; however, it had no effects on total nitrogen (TN), chemical oxygen demands, pH, and oxygen. In the sediments, organic matter (OM), TN, TP, Fe-P, Al-P, and Ca-P concentrations were decreased, while organic phosphorus (Org-P) was increased. Using principal component analysis, it was found that brick dosage could significantly affect the sediment physicochemical properties. A positive correlation was established between brick dosage and Org-P, and a negative correlation with TP and organic matter. An optimal dosage of 20g of brick powders was determined to be effective in the sediment remediation of this study.

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