Phytotoxicity of sewage sludge from selected wastewater treatment plants - new opportunities in sewage sludge treatment
<strong>Purpose</strong> The research was focused on evaluating phytotoxicity of sewage sludge from two selected wastewater treatment plants in Czech Republic.<br /> <strong>Methods</strong> Laboratory experiments were carried out with samples of sewage sludge, which we...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
OICC Press
2020-03-01
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| Series: | International Journal of Recycling of Organic Waste in Agriculture |
| Subjects: | |
| Online Access: | http://ijrowa.khuisf.ac.ir/article_671787_23c2ef173e67eb286fa752e188015804.pdf |
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| Summary: | <strong>Purpose</strong> The research was focused on evaluating phytotoxicity of sewage sludge from two selected wastewater treatment plants in Czech Republic.<br /> <strong>Methods</strong> Laboratory experiments were carried out with samples of sewage sludge, which were focused on the evaluation of their phytotoxicity by using the Phytotoxkit<sup>TM</sup> testing set. Specifically, the inhibitory/stimulating effect was established on the growth of roots from the seeds of white mustard (<em>Sinapis alba</em> L.). The chosen proportions of sewage sludge were 10%, 30% and 50%. The test was conducted in three repetitions. Additionally, the research also included a comparison of the effect of compost addition to the sewage sludge and its potentially increased stimulating effect on the growth of roots from the seeds of white mustard (<em>Sinapis alba</em> L.). Ratios of compost were 5%, 15%, 25% and 50%. The test was conducted in three repetitions.<br /> <strong>Results</strong> Stimulating effect on the growth of white mustard (<em>Sinapis alba</em> L.) was demonstrated only in samples with the sludge proportion of 10%. The results also show that the addition of compost reduced phytotoxicity of sewage sludge in all three tested ratios (5%, 15%, 25% and 50%).<br /> <strong>Conclusion</strong> It was found out that the addition of compost resulted in the decreased phytotoxicity of all tested sewage sludge samples, and hence in their suppressed inhibitory effect. |
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| ISSN: | 2195-3228 2251-7715 |