Inter-department of Environmental Science, Graduate School, Chulalongkorn University, Payathai Road, Patumwan, Bangkok, 10330, Thailand.
Department of Environmental Engineering, Chulalongkorn University, Payathai Road, Patumwan, Bangkok, 10330, Thailand.
J Environ Manage. 2018 Jan 15;206:698-706. doi: 10.1016/j.jenvman.2017.10.071. Epub 2017 Nov 16.
Effects of temperature and hydraulic retention time (HRT) on the performance of the novel insulated anaerobic filter system (IAF) incorporated with the waste heat input in treating building wastewater were investigated. In this study, an electric heater was used to simulate the waste heat input from air conditioner to the IAF system. The wastewater was collected from an office building in Phitsanulok province, Thailand. The HRTs of IAF system were varied to 9, 18 and 27 h, whereas the water temperatures were raised from 30 °C to 35 °C, 40 °C and 45 °C by electric heating to the IAF tank with the covered insulator. From the results, it was found that the IAF system with HRT 27 h and water temperature 35 °C had the highest removal efficiencies for SS, COD, TKN and TP at 67.71, 61.35, 51.20 and 20.08%, respectively per applied heat energy of 4.70 Wh. The predominant bacteria and Archaea species in the system were Uncultured Flavobacterium sp. and Uncultured Methanosaeta sp. The performance index of the IAF system was developed in this study as the highest treatment performance per lowest energy consumption. Therefore, the IAF system incorporated with waste heat input can be a challenging on-site wastewater treatment system for further usage of renewable energy from waste heat as well as environmental conservation.
温度和水力停留时间（HRT）对新型隔热厌氧滤池系统（IAF）在处理建筑废水中的性能的影响进行了研究。在本研究中，电加热器用于模拟来自空调的废热输入到 IAF 系统。废水取自泰国佛统府的一栋办公楼。IAF 系统的 HRT 分别为 9、18 和 27 h，而通过电加热将水温从 30°C 升高到 35°C、40°C 和 45°C，IAF 罐用覆盖的绝热材料覆盖。结果表明，在 35°C 的 HRT 27 h 和水温条件下，每应用 4.70 Wh 热能，SS、COD、TKN 和 TP 的去除效率最高，分别为 67.71%、61.35%、51.20%和 20.08%。系统中主要的细菌和古菌物种是未培养的黄杆菌属和未培养的产甲烷菌属。本研究开发了 IAF 系统的性能指标，作为最低能耗下的最高处理性能。因此，结合废热输入的 IAF 系统可以成为一种具有挑战性的现场废水处理系统，以进一步利用废热中的可再生能源和环境保护。
