Protozoan Bioassays of Soil Amended With Sewage Sludge and Heavy Metals Using The Common Soil Ciliate Colpoda Steinii

Wastewater and sewage sludge contain organic matter that can be valorized through conversion into energy and/or green chemicals. Moreover, resource recovery from these wastes has become the new focus of wastewater management, to develop more sustainable processes in a circular economy approach. The aim of this review was to analyze current sewage sludge management systems in Scandinavia with respect to resource recovery, in combination with other organic wastes. As anaerobic digestion (AD) was found to be the common sludge treatment approach in Scandinavia, different available organic municipal and industrial wastes were identified and compared, to evaluate the potential for expanding the resource recovery by anaerobic co-digestion. Additionally, a full-scale case study of co-digestion, as strategy for optimization of the anaerobic digestion treatment, was presented for each country, together with advanced biorefinery approaches to wastewater treatment and resource recovery.

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Study on co-hydrothermal treatment combined with pyrolysis of rice straw/sewage sludge: Biochar properties and heavy metals behavior

Journal of Analytical and Applied Pyrolysis ◽

10.1016/j.jaap.2021.105074 ◽

2021 ◽

Vol 155 ◽

pp. 105074

Author(s):

Sirui Tong ◽

Shuping Zhang ◽

Haoxin Yin ◽

Jiaxing Wang ◽

Minzi Chen

Keyword(s):

Heavy Metals ◽

Sewage Sludge ◽

Hydrothermal Treatment ◽

Rice Straw

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Influence of rice husk addition on phosphorus fractions and heavy metals risk of biochar derived from sewage sludge

Chemosphere ◽

10.1016/j.chemosphere.2021.130566 ◽

2021 ◽

Vol 280 ◽

pp. 130566

Author(s):

Qiao Xiong ◽

Xiang Wu ◽

Hang Lv ◽

Shuhua Liu ◽

Haobo Hou ◽

...

Keyword(s):

Heavy Metals ◽

Sewage Sludge ◽

Rice Husk ◽

Phosphorus Fractions

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Characteristic of heavy metals in biochar derived from sewage sludge

Journal of Material Cycles and Waste Management ◽

10.1007/s10163-015-0366-y ◽

2015 ◽

Vol 18 (4) ◽

pp. 725-733 ◽

Cited By ~ 56

Author(s):

Tao Lu ◽

Haoran Yuan ◽

Yazhuo Wang ◽

Hongyu Huang ◽

Yong Chen

Keyword(s):

Heavy Metals ◽

Sewage Sludge

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Optimal Solutions for the Use of Sewage Sludge on Agricultural Lands

Water ◽

10.3390/w13050585 ◽

2021 ◽

Vol 13 (5) ◽

pp. 585

Author(s):

Catalina Iticescu ◽

Puiu-Lucian Georgescu ◽

Maxim Arseni ◽

Adrian Rosu ◽

Mihaela Timofti ◽

...

Keyword(s):

Heavy Metals ◽

Sewage Sludge ◽

Agricultural Production ◽

Agricultural Land ◽

Chemical Characteristics ◽

Optimal Solutions ◽

Physico Chemical ◽

Agricultural Areas ◽

The Impact ◽

Made In

The use of sewage sludge in agriculture decreases the pressure on landfills. In Romania, massive investments have been made in wastewater treatment stations, which have resulted in the accumulation of important quantities of sewage sludge. The presence of these sewage sludges coincides with large areas of degraded agricultural land. The aim of the present article is to identify the best technological combinations meant to solve these problems simultaneously. Adapting the quality and parameters of the sludge to the specificity of the land solves the possible compatibility problems, thus reducing the impact on the environment. The physico-chemical characteristics of the fermented sludge were monitored and optimal solutions for their treatment were suggested so as to allow that the sludge could be used in agriculture according to the characteristics of the soils. The content of heavy metals in the sewage sludge was closely monitored because the use of sewage sludge as a fertilizer does not allow for any increases in the concentrations of these in soils. The article identifies those agricultural areas which are suitable for the use of sludge, as well as ways of correcting some parameters (e.g., pH), which allow the improvement of soil quality and obtained higher agricultural production.

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