4.7 Article

Heavy metal fate in pilot-scale sludge drying reed beds under various design and operation conditions

期刊

JOURNAL OF HAZARDOUS MATERIALS
卷 213, 期 -, 页码 393-405

出版社

ELSEVIER
DOI: 10.1016/j.jhazmat.2012.02.016

关键词

Activated sludge; Sludge treatment wetlands; Sludge dewatering; Vegetation; Porous media; Aeration; Heavy metals

资金

  1. General Secretariat of Research and Technology (GSRT) of Greece

向作者/读者索取更多资源

Thirteen pilot-scale sludge drying reed bed (SDRB) units have been constructed and operated under various settings. The beds included a cobbles lower layer, where perforated PVC aeration tubes were placed, and two gravel layers on top. The setup included planted beds with common reeds and control units. Three sludge loading rates (SLR) were examined: 30, 60 and 75 kg dm/m(2)/yr. Heavy metal (HM) accumulation in the residual sludge layer was negligible or low, and was found to increase with sludge layer depth. Plant uptake was low; the belowground biomass accumulated significantly more HMs compared to the aboveground biomass. Less than 16% of the influent HM left the bed through drainage. HM accumulation in the gravel layer was the major metal sink in the mass balance. On the whole, the HM content of the residual sludge was below the legal limits proposed by the EU for land application. (C) 2012 Elsevier BM. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据