Abstract
Dehydration with a plate and frame filter press is a common method for treating dredged silt from rivers and lakes. The silt is often conditioned by the addition of solidifying materials before plate and frame press filtration and, therefore, is subjected to the coupling effect of solidification and consolidation. In this study, consolidation tests of the silt with cement were carried out and compared with the silt after only solidification or only consolidation in terms of moisture content, unconfined compressive strength, and leaching concentration. The test results showed that the moisture content of the silt can be reduced to less than 60% under the coupling action of solidification and consolidation, which was 22% and 4% lower than with solidification only or consolidation only, respectively. The effect of consolidation improved the solidification process; the unconfined compressive strength increased rapidly in the early stage of curing and was 30–150% higher than that of solidified silt. The coupling effects of solidification and consolidation on the leaching concentrations of Ni and Cr in silt were the most significant, and the lowest leaching concentrations were 60% and 90% lower than those of solidified only and consolidated only silt, respectively.
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The datasets used and analyzed in the current study are available from the corresponding author on reasonable request.
References
Bao J, Wang L, **ao M (2016) Changes in speciation and leaching behaviors of heavy metals in dredged sediment solidified/stabilized with various materials. Environ Sci Pollut Res 23:8294–8301. https://doi.org/10.1007/s11356-016-6184-5
Cui Y, Hou H, Wu S, Lin N (2019) Study on two-stage characteristics of mud dewatering by plate-frame pressure filtration and simplified evaluation index. Environ Sci Tech 32(4):1–5 (in Chinese)
Ding A, Qu F, Liang H et al (2014) Effect of adding wood chips on sewage sludge dewatering in a pilot-scale plate-and-frame filter press process. RSC Adv 4(47):24762–24768. https://doi.org/10.1039/c4ra03584d
Huang Y, Zhu W, Qian X, Zhang N, Zhou X (2011) Change of mechanical behavior between solidified and remolded solidified dredged materials. Eng Geol 119(3–4):112–119. https://doi.org/10.1016/j.enggeo.2011.03.005
Ministry of Construction of the People's Republic of China (2005) Determination method for municipal sludge in wastewater treatment plant (CJ/T 221-2005). China Architecture & Building Press, Bei**g (in Chinese)
Ministry of Housing and Urban-Rural Development of the People’s Republic of China (2019) Standard for geotechnical test method (GB/T 50123-2019). China Architecture & Building Press, Bei**g (in Chinese)
Niu Y, Jiang X, Wang K et al (2020) Meta analysis of heavy metal pollution and sources in surface sediments of Lake Taihu, China. Sci Total Environ 700:134509. https://doi.org/10.1016/j.scitotenv.2019.134509
Pan Y, Rossabi J, Pan C, **e X (2019) Stabilization/solidification characteristics of organic clay contaminated by lead when using cement. J Hazard Mater 362:132–139. https://doi.org/10.1016/j.jhazmat.2018.09.010
Ridgway K, Dhami TS, Evans SE, Shaw R, Wright AM (2011) Cake thickness and deposition rate variation in a plate-and-frame filter press. J Pharm Pharmacol 24(10):815–818. https://doi.org/10.1111/j.2042-7158.1972.tb08888.x
Smith BT, Howard IL, Vahedifard F (2018) Lightly cemented dredged sediments for sustainable reuse. Environ Geotech 5(6):324–335. https://doi.org/10.1680/jenge.16.00019
State Environmental Protection Administration of the People’s Republic of China (2007) Solid waste-extraction procedure for leaching toxicity-acetic acid buffer solution method (HJ/T 200-2007). China Environmental Science Press, Bei**g (in Chinese)
Tang CS, Cheng Q, Wang P et al (2020a) Hydro-mechanical behavior of fiber reinforced dredged sludge. Eng Geol 276:105779. https://doi.org/10.1016/j.enggeo.2020.105779
Tang PP, Zhang WL, Chen YH, Chen G, Xu J (2020b) Stabilization/solidification and recycling of sediment from Taihu Lake in China: engineering behavior and environmental impact. Waste Manag 116:1–8. https://doi.org/10.1016/j.wasman.2020.07.040
Wan W, Grossart HP, He D, Yuan W, Yang Y (2020) Stronger environmental adaptation of rare rather than abundant bacterioplankton in response to dredging in eutrophic Lake Nanhu (Wuhan, China). Water Res 190:116751. https://doi.org/10.1016/j.watres.2020.116751
Wu S (2020) Study on filtration and separation performance and retention mechanism of dredged slurry. Doctoral dissertation, Hohai University, China (in in Chinese).
Wu Y, Xu Y, Zhang X et al (2021) Experimental study on vacuum preloading consolidation of landfill sludge conditioned by Fenton’s reagent under varying filter pore size. Geotext Geomembr 49:109–121. https://doi.org/10.1016/j.geotexmem.2020.09.008
Yu J, Fan C, Zhong J et al (2016) Evaluation of in situ simulated dredging to reduce internal nitrogen flux across the sediment-water interface in Lake Taihu, China. Environ Pollut 214:866–877. https://doi.org/10.1016/j.envpol.2016.03.062
Zhong J, Chen C, Yu J et al (2022) Effect of dredging and cap** with clean soil on the mitigation of algae-induced black blooms in Lake Taihu, China: A simulation study. J Environ Manage 302:114106. https://doi.org/10.1016/j.jenvman.2021.114106
Zhou Y, Wang P, Shi L, Cai Y, Wang J (2021) Analytical solution on vacuum consolidation of dredged slurry considering clogging effects. Geotext Geomembr 49(3):842–851. https://doi.org/10.1016/j.geotexmem.2020.12.013
Zhu W, Zhang CL, Chiu ACF (2007) Soil–water transfer mechanism for solidified dredged materials. J Geotech Geoenviron Eng 133(5):588–598. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:5(588)
Zouch A, Mamindy-Pajany Y, Abriak NE, Ksibi M (2022) Storage facilities reclamation using dredged sediments from waterways: growing media formulation for plants according to the EU ecolabel requirements. Waste Manag Res 40(6):822–835. https://doi.org/10.1177/0734242X211025201
Acknowledgements
We thank Gabrielle Tara Penner MSc for editing the English text of a draft of this manuscript.
Funding
This work was supported by the National Key R&D Program of China (2022YFC3202704-01), the National Natural Science Foundation of China (No. 42007253), and the Water Conservancy Science and Technology Project of Jiangsu Province (No. 2022073).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Shi Shu, Lei Li, and Mingwei Cao. Resources, methodology, and validation were performed by Zhengguo Pan, Ruoyu Li, Gaofeng Xu, and Yan Tang. The first draft of the manuscript was written by Shi Shu, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Shu, S., Li, L., Cao, M. et al. Coupling effect of solidification and consolidation on characteristics of the dredged silt. Environ Sci Pollut Res 31, 10887–10895 (2024). https://doi.org/10.1007/s11356-024-31878-1
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DOI: https://doi.org/10.1007/s11356-024-31878-1