Informal waste collectors and aggregators space and activities in Buon Ma Thuot city, Vietnam, COMPOSE project (2019-2021)

The system of informal waste collectors and aggregators in Buon Ma Thuot city (Vietnam) was surveyed in the framework of the COMPOSE project (2019-2021). The social survey based on questionnaire was carried out in the entire area of in Buon Ma Thuot city, Dak Lak province, to identify the location of the aggregator warehouse participating to the informal waste collection and recycling in the city. Then, the collectors and aggregators were interviewed individually to collect information on the space, architectural characteristic of the warehouse, the neighborhood, the hours of operation, the type of materials collected and on the owners of the warehouse (hometown, the reasons for choosing the job). The quantitative surveys were conducted in November 2019 and in October 2020. Data anonymization was performed by removing identifiers, generalization (grouping precise values into less precise/larger categories) and finally by aggregating individual records, producing descriptive statistics (frequencies).

本研究在COMPOSE项目（2019-2021）框架下，针对越南邦美蜀市（Buon Ma Thuot）的非正式废品收集者与聚合者体系展开调研。本次基于问卷的社会调研覆盖多乐省（Dak Lak）邦美蜀市全域，旨在识别参与本市非正式废品收集与回收工作的聚合者仓库点位。随后，研究人员对废品收集者与聚合者开展个体访谈，收集仓库的空间与建筑特征、周边环境、运营时段、回收物料类型，以及仓库所有者的籍贯、从事该职业的动因等相关信息。定量调研分别于2019年11月与2020年10月完成。数据匿名化（data anonymization）流程包括移除识别标识、对精确数值进行泛化处理（将其归类为精度更低、范围更广的类别），最终通过聚合个体记录生成包含频数在内的描述性统计结果。