This study attempted to calculate the amount of waste generated by the residents, households and commercial businesses in Songkhla and Hat Yai cities under three potential scenarios: (1) status quo—no charge for waste collection service (current situation); (2) an equal fee charging rate for constituents of both Songkhla and Hat Yai cities as stated in the Public Health Law of Thailand; (3) a different waste collection fee within the cities of Songkhla and Hat Yai as proposed and concluded in the study of Siritorn (Presented at the APBERS conferences in Japan, 2017, Ritsumeikan Asia Pacific University, Beppu, 2017). The regression results of the double-log model indicated that different optimal rates for waste collection fee in each city would decrease the waste produced in Songkhla by 162 kg per day and decrease waste production by 503 kg per day in Hat Yai. As a result, the two municipalities could generate a double benefit of (1) savings from total expenditure on waste management and (2) savings from the adjustment of behaviour of the residents to create a decrease in the present waste production total amounts. In summary, the “different” fee policy strategy created a win–win situation for the municipalities.

本研究试图在以下三种可能的情况下，计算宋卡和合艾市居民，家庭和商业企业产生的废物量：（1）现状—对废物收集服务不收费（现状）；（2）按照泰国《公共卫生法》的规定，对宋卡府和合艾市的居民收取相等的费用；（3）对Siritorn的研究提出并得出结论，在宋卡和合艾市内收取不同的废物收集费（2017年在日本APBERS会议上提出，2017年在别府立命馆亚太大学提出）。双对数模型的回归结果表明，每个城市不同的垃圾收集费最佳费率将使宋卡每天减少162公斤废物，合艾每天减少503公斤废物。结果，这两个城市可以产生双重收益：（1）废物管理总支出的节省和（2）居民行为调整以减少目前废物产生总量的节省。总之，“不同的”收费政策策略为市政当局创造了双赢的局面。这两个城市可以产生双重收益：（1）废物管理总支出的节省和（2）居民行为调整以减少目前废物产生总量的节省。总之，“不同的”收费政策策略为市政当局创造了双赢的局面。这两个城市可以产生双重收益：（1）废物管理总支出的节省和（2）居民行为调整以减少目前废物产生总量的节省。总之，“不同的”收费政策策略为市政当局创造了双赢的局面。