某住宅区化粪池H_(2)S排放特征与影响因素  

Characteristics and Influencing Factors of H_(2)S Emission from Residential Septic Tanks

作　　者：洛嘎 周作勇 赵冬泉 唐兰贵 席劲瑛 LUO Ga;ZHOU Zuo-yong;ZHAO Dong-quan;TANG Lan-gui;XI Jin-ying(State Key Laboratory of Environmental Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,China;Beijing Tsinghuan Smart Water Technology Co.Ltd.,Beijing 100085,China)

机构地区：[1]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [2]北京清环智慧水务科技有限公司,北京100085

出　　处：《中国给水排水》2022年第13期1-7,共7页China Water & Wastewater

摘　　要：住宅区化粪池排放的H_(2)S是引起社区恶臭污染和投诉的重要原因。选取某住宅区,对化粪池排放气体的流量、H_(2)S浓度、污水水质与流速等指标进行了连续监测,并分析了H_(2)S排放量和相关影响因素。结果表明,该住宅区每月测得的化粪池H_(2)S排放浓度为(69.9±25.4)mg/m^(3),并呈现出夏季高、冬季低的特点。污水pH、氧化还原电位(ORP)和硫酸盐与每月监测的H_(2)S排放浓度呈显著负相关,而气温、湿度、水温、COD和硫化物浓度与H_(2)S排放浓度呈显著正相关。测定了6月某天化粪池H_(2)S排放浓度随时间的变化,发现在居民用餐和洗漱时间段内H_(2)S排放浓度出现明显峰值,污水流速与H_(2)S排放浓度的Pearson相关系数R值为0.32,呈显著相关关系。该住宅区化粪池全年人均H_(2)S排放量为2.34×10^(-3) kg,据此估算出北京市住宅区化粪池H_(2)S的年排放总量为51.3 t。H_(2)S emission from septic tanks in residential areas is an important cause of odor pollution and complaints in communities.In this study,a residential area was selected and the septic tanks emissions flow rate,H_(2)S concentration,influent quality and flow rate were continuously monitored,and H_(2)S emissions and related influencing factors were analyzed.The results showed that the monthly measured septic tanks H_(2)S emission concentrations in this residential area were(69.9±25.4)mg/m^(3) and showed a pattern of high in summer and low in winter.Influent pH,oxidation reduction potential(ORP),and sulfate were significantly negatively correlated with monthly monitored H_(2)S emission concentrations,while air temperature,humidity,water temperature,COD,and sulfide concentrations were significantly positively correlated with H_(2)S emission concentrations.The variation of septic tanks H_(2)S emission concentration with time was measured on a day in June,and it was found that there was a significant peak of H_(2)S emission concentration during the time of meal and wash for residents,and the Pearson correlation coefficient R value of 0.32 between sewage flow rate and H_(2)S emission concentration was significantly correlated.The annual per capita H_(2)S emission from septic tanks in this residential area was 2.34×10^(-3) kg,and the total annual emission of H_(2)S from septic tanks in residential areas in Beijing City was estimated to be 51.3 t.

关 键 词：化粪池 H_(2)S 排放特征 影响因素 

分 类 号：TU992[建筑科学—市政工程]