The usability of the IR, RAC and MRI indices of heavy metal distribution to assess the environmental quality of sewage sludge composts

2014 ◽  
Vol 34 (7) ◽  
pp. 1227-1236 ◽  
Author(s):  
Zygmunt Mariusz Gusiatin ◽  
Dorota Kulikowska
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Environmental Quality ◽  
Metal Distribution ◽  
Heavy Metal Distribution

scholarly journals Potential of anaerobic co-digestion in improving the environmental quality of agro-textile wastewater sludge

2020 ◽  
Author(s):  
Jean G. Tapsoba ◽  
Hans C. Komakech ◽  
Johnson Odera Ouma
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Environmental Quality ◽  
Oxygen Demand ◽  
Wastewater Sludge ◽  
Effluent Treatment ◽  
Cow Dung ◽  
Biogas Yield ◽  
Textile Sludge

Abstract Sludge from textile effluent treatment plants (ETP) remains a challenge for many industries due to inefficient and limited waste management strategies. This study explores the potential of using anaerobic digestion (AD) to improve the environmental quality of textile ETP sludge. The AD of ETP sludge is affected by the low C/N ratio (3.7), heavy metal content, and toxicity. To improve the process, co-digestion of ETP sludge with different substrates (sewage sludge, cow dung, and sawdust) under mesophilic conditions (37 °C), followed by a thermochemical pretreatment was assessed. The results showed that anaerobic co-digestion of the textile sludge with the co-substrates is effective in reducing pollution load. It was found that organic matters degraded during the 30-day AD process. The chemical oxygen demand and biological oxygen demand reduction was in the range of 33.1–88.5% and 48.1–67.1%, respectively. Also, heavy metal (cadmium, lead, iron, and, mercury) concentration was slightly reduced after digestion. Maximal biogas yield was achieved from co-digestion of textile sludge and sewage sludge at a mixing ratio of 3:1, 1:1, and 1:3, and methane content was respectively 87.9%, 68.9%, and 69.5% of the gas composition. The results from this study show that co-digestion will not only reduce the environmental pollution and health risks from the textile industry but also recover useful energy.

Heavy metal distribution and uptake by maize in a mudflat soil amended by vermicompost derived from sewage sludge

2019 ◽  
Vol 26 (29) ◽  
pp. 30154-30166 ◽  
Author(s):  
Wengang Zuo ◽  
Kaida Xu ◽  
Wenjie Zhang ◽  
Yao Wang ◽  
Chuanhui Gu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Metal Distribution ◽  
Heavy Metal Distribution

Fissure and mineral weathering impacts on heavy metal distribution in sludge-amended soil

2011 ◽  
Vol 346 (1-2) ◽  
pp. 29-44 ◽  
Author(s):  
Dominique Proust ◽  
Jacinthe Caillaud ◽  
Claude Fontaine ◽  
Michel Fialin ◽  
Christian Courbe ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Mineral Weathering ◽  
Metal Distribution ◽  
Heavy Metal Distribution ◽  
Amended Soil

Assessment of Environmental Quality of Soil Fertilized Grapefruit Trees with Municipal Sewage Sludge

2013 ◽  
Vol 671-674 ◽  
pp. 2736-2741
Author(s):  
Yin An Ming ◽  
Tao Tao
Keyword(s):  
Sewage Sludge ◽  
Environmental Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Land Application ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Limiting Factor

To reuse municipal sewage sludge safely, experiment was carried out on grapefruit trees fertilized with composted sludge from Shiweitou Sewage Treatment Plant in Xiamen City of China, and a method was introduced of how to assess the environmental quality of grapefruit trees soil fertilized with sludge by Set Pair Analysis (SPA) model. The results showed that the soil in the surface layer (0-15cm) and the deeper layer (15-30cm) was less clean, and the environment of soil was not polluted. Thus it was feasible to use sludge as fruit fertilizer. The maximum service life of sludge for continuous land application was estimated by taking Cd as the limiting factor, which would provide scientific guide and technical support for safe land application of sludge.

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