A number of relevant case studies on available alternatives and on the use of substitutes were identified, relating in particular to the treatment and minimization of medical, municipal and hazardous wastes.
有人提到了关于可行替代技术和使用替代品的一系列相关案例，其中特别涉及医疗废物、城市废物和危险废品的处理并使之减少到最低限度。