Stabilization ponds are open pools that remove total suspended solids, organic matters, microbial and pathogenic agents using physical, chemical, and biological processes. If the stabilization ponds are not well designed, they can produce odors, breed many insects, increase suspended solids concentration in the effluent and pollute groundwater. Consideration of environmental factors is critical for operation and maintenance. In this study, first, information on wastewater treatment plants and meteorological parameters were collected, and simultaneously, specialists were selected to score the effect of environmental factors on stabilization pond efficiency. A geographic information system was used to sit for suitable locations for stabilization ponds. The results showed that 23.6 % of Iran’s treatment plants are stabilization ponds, which based on climate, evaporation, sunny hours, ice days, wind speed, and temperature parameters, 33.33 %, 37.3 %, 14 %, 50 %, 64 and 26 % of the stabilization ponds have obtained good points, respectively. The results also showed that 50 % of the stabilization ponds obtained an acceptable score considering all environmental parameters’ simultaneous effect. A preliminary study based on considering all the environmental parameters showed that the central and southern regions are the best areas for establishing waste stabilization ponds; in contrast, northern and northeastern regions can have high operation and maintenance costs with lower efficiency. This study has shown that setup and design of the new waste stabilization ponds in Iran need to take into account by considering environmental factors because these factors have the main effect on algae growth which are one of main biological treatment.

稳定池是开放式池，使用物理、化学和生物过程去除总悬浮固体、有机物、微生物和病原体。如果稳定池设计不当，会产生异味，滋生许多昆虫，增加污水中的悬浮物浓度并污染地下水。考虑环境因素对于操作和维护至关重要。本研究首先收集污水处理厂和气象参数的信息，同时选择专家对环境因素对稳定池效率的影响进行评分。地理信息系统被用来确定稳定池塘的合适位置。结果表明，伊朗 23.6% 的处理厂是稳定池，根据气候、蒸发量、晴天时数、结冰日、风速和温度参数，分别有33.33%、37.3%、14%、50%、64%和26%的稳定池获得了好分数。结果还表明，考虑到所有环境参数的同时影响，50% 的稳定池获得了可接受的分数。综合考虑所有环境参数的初步研究表明，中南部地区是建立废物稳定池的最佳地区；相比之下，北方和东北地区的运维成本较高，效率较低。