Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, China.
School of Environmental Science and Engineering, Chang'an University, Xi'an, China.
PLoS One. 2019 Jul 11;14(7):e0219009. doi: 10.1371/journal.pone.0219009. eCollection 2019.
Megacities are facing serious water pollution problems due to urbanization, rapid population growth and economic development. Water is an essential resource for human activities and socio-economic development and water quality in urban settings has important implications for human and environmental health. Urbanization and lack of sewerage has left the water in Jakarta, Indonesia in a heavily polluted condition. Rigorous assessment of urban water quality is necessary to understand the factors controlling water quality conditions. We use trend analysis to assess the current water quality conditions in Jakarta, focusing on Biochemical Oxygen Demand (BOD), Dissolved Oxygen (DO), and Total Suspended Solids (TSS). In most monitoring stations analyzed, BOD and TSS concentrations have decreased over time, but from large starting concentrations. DO in most monitoring stations has increased. Although Jakarta's water quality has shown some improvement, it remains heavily impaired. The average value of BOD is low in upper stream stations compared to middle and lower stream stations. BOD and TSS trends of some water quality stations in middle and lower streams show increasing trends. Cluster analysis results suggest three groups for BOD and TSS, and four groups for DO. Understanding water quality conditions and factors that control water quality suggest strategies for improving water quality given current trends in climate, population growth and urban development. Results from this study suggest research directions and management strategies to address water quality challenges.
由于城市化、人口快速增长和经济发展,特大城市正面临着严重的水污染问题。水是人类活动和社会经济发展的基本资源,城市环境中的水质对人类和环境健康具有重要意义。城市化和缺乏下水道系统导致印度尼西亚雅加达的水质受到严重污染。对城市水质进行严格评估对于了解控制水质状况的因素是必要的。我们使用趋势分析来评估雅加达当前的水质状况,重点关注生化需氧量(BOD)、溶解氧(DO)和总悬浮固体(TSS)。在分析的大多数监测站中,BOD 和 TSS 浓度随时间呈下降趋势,但起始浓度较高。大多数监测站的 DO 呈上升趋势。尽管雅加达的水质有所改善,但仍受到严重影响。与中下游监测站相比,上游监测站的 BOD 平均值较低。中下游一些水质监测站的 BOD 和 TSS 趋势呈上升趋势。聚类分析结果表明,BOD 和 TSS 分为三组,DO 分为四组。了解水质状况和控制水质的因素表明,鉴于当前气候、人口增长和城市发展的趋势,应采取改善水质的策略。本研究的结果表明了研究方向和管理策略,以应对水质挑战。