Reuse of agrowastes for dewatering enhancement of sewer sediments for brick production

  • Nguyen Xuan Huan Faculty of Environmental Sciences, University of Science, Vietnam National University, 334 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam
  • Dang Thi Thanh Huyen Faculty of Environmental Engineering, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Pham Thi Ngoc Lan Faculty of Chemistry and Environment, Thuy Loi University, 175 Tay Son street, Dong Da district, Hanoi, Vietnam
  • Tran Thuy Anh Faculty of Environmental Engineering, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Tran Thi Huyen Nga Faculty of Environmental Sciences, University of Science, Vietnam National University, 334 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam
  • Hoang Duc Quyen Faculty of Environmental Sciences, University of Science, Vietnam National University, 334 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam
  • Pham Thi Thuy Faculty of Environmental Sciences, University of Science, Vietnam National University, 334 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam
  • Nguyen Manh Khai Faculty of Environmental Sciences, University of Science, Vietnam National University, 334 Nguyen Trai street, Thanh Xuan district, Hanoi, Vietnam
DOI: https://doi.org/10.31814/stce.huce2023-17(2)-07
Keywords: sewers’dredged sludge, agro-wastes, moisture content, organic matters, heavy metals, waste reuse

Abstract

With the increasing wastewater generation from domestic and industrial activities due to the rapid economic development, the generation of sludge, in particular dredged sludge from municipal sewer system, has been an issue in developing countries. This study evaluated the enhancement of sewer’s sludge dewatering via mixing
the sludgewith different agro-wastes, including corn core powder, rice husk powder, bagasse powder and peanut shell powder. The addition of these agro-waste powders helped decrease the sludge’s moisture contents up to 17% while increase the organic matters nearly to 40% after mixing with the ratio of agro-wastes and sludge of 1:3. Statistical analysis revealed the impacts of both additive types and mixing ratio on moisture content reduction. Among the four types of agro-waste, rice husk was shown to be the best additive to dredged sludges with highest reduction of heavy metal concentration and moisture content. The addition of agro-waste powders to enhance the dewatering of sludges is promising in the context of promoting waste reuse and energy saving.

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Author Biography

Pham Thi Ngoc Lan, Faculty of Chemistry and Environment, Thuy Loi University, 175 Tay Son street, Dong Da district, Hanoi, Vietnam

Faculty of Chemistry and Environment,

Thuy Loi University

Published
26-06-2023
How to Cite
Huan, N. X., Thanh Huyen, D. T., Ngoc Lan, P. T., Anh, T. T., Huyen Nga, T. T., Quyen, H. D., Thuy, P. T., & Khai, N. M. (2023). Reuse of agrowastes for dewatering enhancement of sewer sediments for brick production. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 17(2), 70-82. https://doi.org/10.31814/stce.huce2023-17(2)-07
Issue
Vol 17 No 2 (2023)
Section
Research Papers

Copyright (c) 2023 Hanoi University of Civil Engineering

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