摘要
以农村生活污水处理技术为研究对象,采用以吨水占地面积评估为限制性因素评估,费用效益分析为核心因素评估,层次分析+灰色关联度为次重因素评估的"三步式"综合评估方法,对农村生活污水处理技术进行了筛选研究,给出了评估法数学模型的建模过程,并进行了实例分析。通过文献调研、实地调研及信函调研等筛选出A/O、A^2/O、水解酸化(厌氧)+接触氧化、厌氧+生态沟、厌氧+氧化塘和厌氧+人工湿地6类典型的农村污水处理技术,利用评估模型进行了单因素评估,在此基础上进行了"三步式"综合评估。单因素评估结果表明:水解酸化(厌氧)+接触氧化、厌氧+人工湿地、水解酸化(厌氧)+接触氧化分别是限制性因素、核心因素、次重因素等单因素评估的最佳技术。综合评估表明:在土地限制性强的区域,水解酸化(厌氧)+接触氧化组合工艺为最佳可行技术;在土地限制性弱的区域,厌氧+人工湿地组合工艺为最佳可行技术。
A comprehensive evaluation method was developed for screening rural domestic wastewater treatment technologies,taking per unit occupied area as the restricted factor,and adopting the cost-benefit analysis for the core factors and analytic hierarchy process（ AHP） with grey relational degree method for secondary factors. The development process of mathematical models was provided with a case study. Six rural domestic sewage treatment technologies,including A/O, A2/O, hydrolytic acidification-biological contact oxidation process, anaerobicconstructed wetland（ CW）,anaerobic-ecological gully,and anaerobic-oxidation pond,were screened out as typical technologies based on literature review,on-site survey and questionnaire. The three single factors evaluations were performed individually and then the comprehensive evaluation conducted. The results of single factor evaluation showed that the hydrolytic acidification-biological contact oxidation process was the best available technology（ BAT） in restricted factors evaluation and secondary factors evaluation,while the anaerobic-CW was the BAT in core factors evaluation. The results of comprehensive evaluation showed that the hydrolytic acidification-biological contact oxidation process was the BAT for rural domestic wastewater in the area in lack of land,and that the anaerobic-constructed wetland was the BAT in the area with more lands.
出处
《环境工程技术学报》
CAS
2016年第2期105-110,共6页
Journal of Environmental Engineering Technology
基金
国家水体污染控制与治理科技重大专项(2012ZX07206-002)
关键词
农村
生活污水
综合评估
countryside
domestic wastewater
comprehensive evaluation
