@incollection{Maharjan21, author = {Namita Maharjan and Choolaka Hewawasam and Masashi Hatamoto and Takashi Yamaguchi and Hideki Harada and Nobuo Araki}, title = {Downflow Hanging Sponge System: A Self-Sustaining Option for Wastewater Treatment}, booktitle = {Promising Techniques for Wastewater Treatment and Water Quality Assessment}, publisher = {IntechOpen}, address = {Rijeka}, year = {2021}, editor = {Iqbal Ahmed Moujdin and J. Kevin Summers}, chapter = {21}, doi = {10.5772/intechopen.94287}, url = {https://doi.org/10.5772/intechopen.94287} }