Assessment of water quality variant trends on Kenh Doi Kenh Te Canal, Ho Chi Minh City in period 2012-2022

Abstract

Ho Chi Minh City (HCMC) has a widespread inner-city canal system. The city's canals play a very important role in regulating, receiving and treating wastewater. With a very high population density, the amount of wastewater increases and the results are that the canal water being seriously polluted. The Kenh Doi - Kenh Te Canal (KDKT) is a large and very polluted canal. The canal flows through many districts of HCMC and has not yet been renovated. The role of KDKT is very important because here it is a densely populated area, it directly receives a wastewater and being an important waterway in the East of the City. In order to assess the trend of water quality changes in the KDKT canal as a basis for environment management and decision-making on implementing canal improvement projects, the study assessed and combined the level of water quality and self-cleaning capacity with establishing a matrix to determine the level of water quality trend changes considering the operation of the tide control sluice system and climate change scenarios. The trend assessment results show that the canal water quality shows no signs of change when the trend level is average. This shows that the pollution level is increasing but the self-cleaning capacity of the canal water is weakening. Thus, there is a need for the solutions to increase the self-cleaning capacity and improve the canal water quality to change and create a changing trend to improve the canal water quality.