Investigation on manhole sludge in Can Tho City
,
,
,
,
,
,
and
Article Sidebar
Full Text: 
PDF
Main Article Content
Abstract
During the rainy season, Can Tho city frequently faces severe flooding on its streets. In this study, the investigation is carried out on 30 streets and 10 canals nearby the streets in the center of Can Tho city. The results indicate that the surveyed manholes contain a lot of sludge with an average volume percent of 39.29%. In the food service areas, the average volume percent of sludge in manholes is found more than 70%. In the concentrated residential areas, the amount of sludge is less, but still at a relatively high rate (over 50%). In addition, the results show that the studied canals in the inner city are polluted due to waste directly from the drainage system. These issues have an effect on the drainage capacity of the roads. Some discussion on sand also shows that the sand shortage has reached an alarming level, which is the main factor leading to slow progress of some road projects. The sand reserves in the Mekong Delta region decrease sharply and the scarcity of sand causes sand prices to skyrocket, which is a difficult problem for this area. The development of mobile sludge treatment technology to produce a replacement material suitable for levelling and fertilizer purposes can be a potential topic for future research.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
References
Ahmed, S. N., Anh, L. H., & Schneider, P. (2020). A DPSIR assessment on ecosystem services challenges in the Mekong Delta, Vietnam: Coping with the impacts of sand mining. Sustainability (Switzerland), 12(22), 1–29. https://doi.org/10.3390/su12229323
Hau Giang Department of Construction. (2023). Construction material prices 2023. https://soxaydung.haugiang.gov.vn/gia-vat-lieu-XD
Do, T. L. (2020). Urban landscape planning adapting to flood in Can Tho city, Viet Nam. IOP Conference Series: Materials Science and Engineering, 869(2). https://doi.org/10.1088/1757-899X/869/2/022019
Ngoc, T. (2023). The highway is afraid of delays due to lack of sand. Thanh Nien News. https://thanhnien.vn/cao-toc-lo-cham-tien-do-vi-cat-185231105174033476.htm (in Vietnamese).
Phong, H., & Hang, T. (2023). Current exploitation rate to deplete Mekong Delta sand within 10 years. Vnexpress International. https://e.vnexpress.net/news/news/environment/current-exploitation-rate-to-deplete-mekong-delta-sand-within-10-years-study-4660014.html
Phung, T., & Phu, Đ. (2023). The expressway project is likely to be behind schedule due to lack of sand. Tuoi Tre News. https://tuoitre.vn/du-an-cao-toc-lo-thieu-cat-20230211090814088.htm
Phuong, N. T. L., Yabar, H., & Mizunoya, T. (2021). Characterization and Analysis of Household Solid Waste Composition to Identify the Optimal Waste Management Method: A Case Study in Hanoi City, Vietnam. Earth (Switzerland), 2(4), 1046–1058. https://doi.org/10.3390/earth2040062
Quan, N. V. (2019). Research on ecological lake solutions for minimizing flooding due to rain in new urban areas in the Mekong Delta. Journal of Water Resources and Environmental Engineering, 67, 46–53 (in Vietnamese).
Smith, K. M., Fowler, G. D., Pullket, S., & Graham, N. J. D. (2009). Sewage sludge-based adsorbents: A review of their production, properties and use in water treatment applications. Water Research, 43(10), 2569–2594. https://doi.org/10.1016/j.watres.2009.02.038
Tuyen, D. (2023). Sand crisis in the Mekong Delta. Thanh Nien News. https://thanhnien.vn/khung-hoang-cat-o-dbscl-185230703025421312.htm (in Vietnamese).
Werther, J., & Ogada, T. (1999). Sewage sludge combustion. Progress in Energy and Combustion Science, 25(1), 55–116. https://doi.org/10.1016/S0360-1285(98)00020-3