摘要
为了探讨适用于三峡库区山地小城镇污水处理的工艺,结合山地小城镇具有较大自然地形高差和较多荒地荒沟的特点,采用"厌氧水解/自然跌水曝气/改良人工土快渗系统"组合工艺建设生活污水处理示范工程。分析了该示范工程对主要污染物的去除效果,考察了温度和进水负荷对去除污染物的影响,并进行了经济分析。结果表明,该组合工艺具有较强的抗冲击负荷能力和较好的污染物去除效果;系统对COD和NH4+-N的去除效果与温度显著相关,而对TP的去除效果受温度的影响较小;各污染物的单位面积去除负荷与进水负荷近似服从对数关系;该组合工艺的基建费用较之常用污水处理工艺减少20%～50%,运行成本仅为0.29元/m3。
In order to seek for the sewage treatment processes fitting for small mountain towns in the Three Gorges Reservoir Region, a demonstration project of domestic sewage treatment using the com- bined process of anaerobic hydrolysis, natural waterfall aeration and improved artificial soil rapid infiltra- tion was built based on the features of large terrain elevation and many barren ravines. The removal effi- ciencies of major pollutants in the combined process were analyzed. The impact of temperature and influ- ent loadings on removal of pollutants was discussed, and the economic benefit was also investigated in the demonstration project. The combined process had a strong resistance to the influent loadings with high removal efficiencies of pollutants. There was a significant correlation between temperature and the removal efficiencies of COD and NH4＋ ^- N in the system, while the removal efficiency of TP was not associated with temperature. There was an approximate logarithmic relationship between the pollutant removal load- ings per unit area and the influent loadings. The construction cost of the combined process was reduced by 20% to 50% compared with conventional sewage treatment processes. The operation cost was 0.29 yuan/m^3.
出处
《中国给水排水》
CAS
CSCD
北大核心
2012年第5期9-11,15,共4页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2009ZX07104-002)
