Effects of sludge pellet mulch on soil physicochemical properties and soil enzyme activities
Abstract
The drinking-water treatment sludge (DWTS) possesses intricate characteristics, which restrict its broad applicability. To tackle this issue, we employed DWTS obtained from the Minhang District of Shanghai as the primary constituent, blending it with a low-alkaline curing material to produce pelletized mulch. This investigation primarily focuses on evaluating the environmental safety of sludge pellet mulch (SPM) and scrutinizing alterations in soil physicochemical properties at various mulch thicknesses. The outcomes affirm the durability of SPM and the compliance of eight heavy metals with prescribed standards concerning their concentration, pH, and EC values. After applying SPM, noteworthy enhancements were observed in soil moisture, organic matter content, available nutrients, and the activity of four enzymes. Furthermore, a reduction in soil temperature was observed. For urban landscape mulching, SPM within the range of 9.6–28.8 kg/m2 emerged as the preferred choice, yielding the most favorable overall soil quality improvements.
Keyword : drinking-water treatment sludge, sludge pellet mulch, soil physicochemical properties, soil enzyme activities
How to Cite
Mo, Q., Sun, H., Wang, Y., Song, S., Zhang, X., He, T., & Zhuo, C. (2024). Effects of sludge pellet mulch on soil physicochemical properties and soil enzyme activities. Journal of Environmental Engineering and Landscape Management, 32(2), 169–181. https://doi.org/10.3846/jeelm.2024.20978
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
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Faisal, A. A. H., Al-Wakel, S. F. A., Assi, H. A., Naji, L. A., & Naushad, Mu. (2020). Waterworks sludge-filter sand permeable reactive barrier for removal of toxic lead ions from contaminated groundwater. Journal of Water Process Engineering, 33, Article 101112. https://doi.org/10.1016/j.jwpe.2019.101112
García-Ruiz, R., Ochoa, V., Hinojosa, M. B., & Carreira, J. A. (2008). Suitability of enzyme activities for the monitoring of soil quality improvement in organic agricultural systems. Soil Biology and Biochemistry, 40(9), 2137–2145. https://doi.org/10.1016/j.soilbio.2008.03.023
Ge, T., Nie, S., Wu, J., Shen, J., Xiao, H., Tong, C., Huang, D., Hong, Y., & Iwasaki, K. (2011). Chemical properties, microbial biomass, and activity differ between soils of organic and conventional horticultural systems under greenhouse and open field management: A case study. Journal of Soils and Sediments, 11(1), 25–36. https://doi.org/10.1007/s11368-010-0293-4
General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China, & Standardization Administration of China. (2009). The disposal of sludge from municipal wastewater treatment plant – The quality of sludge used in gardens or parks (GB/T 23486-2009). Beijing, China.
General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China, & Standardization Administration of China. (2010). Lightweight aggregates and its test methods – Part 2: Test methods for lightweight aggregates (GB/T 17431.2-2010). Beijing, China.
Guan, S. (1986). In soil enzymes and methods for research. China Agriculture Press.
Håkansson, I., & Lipiec, J. (2000). A review of the usefulness of relative bulk density values in studies of soil structure and compaction. Soil and Tillage Research, 53(2), 71–85. https://doi.org/10.1016/S0167-1987(99)00095-1
Heil, D. M., & Barbarick, K. A. (1989). Water treatment sludge influence on the growth of sorghum-sudangrass. Journal of Environmental Quality, 18(3), 292–298. https://doi.org/10.2134/jeq1989.00472425001800030008x
Ippolito, J. A., Barbarick, K. A., & Redente, E. F. (1999). Co-application effects of water treatment residuals and biosolids on two range grasses. Journal of Environmental Quality, 28(5), 1644–1650. https://doi.org/10.2134/jeq1999.00472425002800050031x
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Jodaugienė, D., Pupalienė, R., Sinkevičienė, A., Marcinkevičienė, A., Žebrauskaitė, K., Baltaduonytė, M., & Čepulienė, R. (2010). The influence of organic mulches on soil biological properties. Žemdirbystė-Agriculture, 97, 33–40.
Kader, M. A., Senge, M., Mojid, M. A., & Ito, K. (2017). Recent advances in mulching materials and methods for modifying soil environment. Soil and Tillage Research, 168, 155–166. https://doi.org/10.1016/j.still.2017.01.001
Kai, M., Takazumi, K., Adachi, H., Wasaki, J., Shinano, T., & Osaki, M. (2002). Cloning and characterization of four phosphate transporter cDNAs in tobacco. Plant Science, 163(4), 837–846. https://doi.org/10.1016/S0168-9452(02)00233-9
Kołodziejczyk, M., Antonkiewicz, J., & Kulig, B. (2017). Effect of living mulches and conventional methods of weed control on weed occurrence and nutrient uptake in potato. International Journal of Plant Production, 11(2), 276–284. http://ijpp.gau.ac.ir//article_3424_e69d66817514b0ab6d2ca0e1c0996e8e.pdf
Koski, R., & Jacobi, W. (2004). Tree pathogen survival in chipped wood mulch. Arboriculture & Urban Forestry, 30(3), 165–171. https://doi.org/10.48044/jauf.2004.020
Lin, W., Zhan, X., Zhan, T. L., Chen, Y., Jin, Y., & Jiang, J. (2014). Effect of FeCl3-conditioning on consolidation property of sewage sludge and vacuum preloading test with integrated PVDs at the Changan landfill, China. Geotextiles and Geomembranes, 42(3), 181–190. https://doi.org/10.1016/j.geotexmem.2013.12.008
Masciandaro, G., Ceccanti, B., Benedicto, S., Lee, H. C., & Cook, H. F. (2004). Enzyme activity and C and N pools in soil following application of mulches. Canadian Journal of Soil Science, 84(1), 19–30. https://doi.org/10.4141/S03-045
Meng, Z., Wu, F., Guo, W., Yu, T., & Yu, S. (2013). State-of-the-art of excess sludge reduction technology. China Water & Wastewater, 29(8), 26–28. https://doi.org/10.3969/j.issn.1000-4602.2013.08.007
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