Haque Shama E, Nahar Nazmun, Chowdhury Nafisa N, Gazi-Khan Lameesa, Sayanno Tasriba K, Muktadir Md Abdul, Haque Md Sazzadul
Department of Civil and Environmental Engineering, North South University, Dhaka, 1229, Bangladesh.
C3ER, BRAC University, Dhaka, 1212, Bangladesh.
Environ Monit Assess. 2025 May 10;197(6):646. doi: 10.1007/s10661-025-14081-8.
In the past five decades, Dhaka city, the capital of Bangladesh experienced urbanization in an unprecedented manner. The city has grown spatially in all directions to accommodate the urban population that resulted in accelerated growth of the construction and demolished floor areas in Dhaka and its surroundings, commonly known as the Greater Dhaka. As a result, the quantities of construction and demolition waste have increased significantly within this region. Through an onsite field investigation of 21 construction and 12 demolition project sites in Greater Dhaka, the study identified the waste generation rate to be approximately 463.67 kg and 90.31 kg per m floor area of demolition and construction projects, respectively. Projection based on this waste generation rate; the annual waste amount has been calculated for the eight districts of the Greater Dhaka region. The recycling potential identified through this study also estimated the economic benefits of the studied construction and demolition waste (CDW) materials for these eight districts for years 2022 to 2030. The findings of the present study are expected to assist the relevant stakeholders and policymakers to devise business development and legislative measures for the successful implementation of the sustainable waste management plan for the construction industry.
在过去的五十年里，孟加拉国首都达卡市经历了前所未有的城市化进程。这座城市向各个方向空间扩张，以容纳城市人口，这导致达卡及其周边地区（通常称为大达卡）的建筑面积加速增长，建筑和拆除面积不断增加。因此，该地区的建筑垃圾和拆除垃圾数量大幅增加。通过对大达卡地区21个建筑项目工地和12个拆除项目工地进行实地调查，该研究确定拆除项目和建筑项目每平方米建筑面积的垃圾产生率分别约为463.67千克和90.31千克。基于此垃圾产生率进行预测，计算出了大达卡地区八个区的年度垃圾量。通过本研究确定的回收潜力还估算了2022年至2030年这八个区所研究的建筑和拆除垃圾（CDW）材料的经济效益。本研究结果有望帮助相关利益攸关方和政策制定者制定商业发展和立法措施，以成功实施建筑业可持续废物管理计划。
