[1]韩彩云,张晶宇,丁永伟,等.曝气沉砂池H2S排放浓度的时间变化及影响因子[J].中国给水排水,2020,36(7):74-77.
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曝气沉砂池H2S排放浓度的时间变化及影响因子

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷 期数: 2020年第7期 页码: 74-77 栏目: 出版日期: 2020-04-01
Title:
Temporal Variation Characteristics and Influencing Factors of H2S Emission Concentration in Aerated Grit Chamber
作者:
韩彩云1,2，张晶宇1，丁永伟3，陈鹏4，朱强2，席劲瑛1,2
关键词:
曝气沉砂池; H2S; 时间变化特征; 影响因子
Keywords:
aerated grit chamber; hydrogen sulfide (H2S); temporal variation characteristics; influencing factor
摘要:
为了解污水构筑物中H2S排放浓度的时间变化特征与影响因子，选取恶臭污染较重的8月—10月，分别于2014年和2015年对苏州某污水处理厂曝气沉砂池内H2S浓度进行了实时在线监测（采样间隔为30 s）。结果表明，污水厂的H2S排放浓度波动较大，具有明显的变化特征，一天中11:00—14:00、17:00—19:00、22:00—02:00是H2S排放的3个高峰期，05:00—09:00、15:00—16:00是H2S排放的低谷期。进一步考察了污水流量、污水中硫化物浓度、pH值和水温的变化对H2S排放浓度的影响,发现H2S排放浓度与污水流量（1 180~2 360 m3/h）、污水中硫化物浓度（0.36~0.71 mg/L）和水温（26.8~27.1 ℃）呈显著正相关性，其中污水中硫化物浓度和水温与H2S排放浓度的Pearson相关系数分别为0.84和0.62。在一天的变化范围内，pH值波动范围（7.07~7.23）小，与H2S排放浓度未表现出显著的相关性。
Abstract:
In order to understand temporal variation characteristics and influencing factors of H2S emission concentration in wastewater treatment structures, real-time online monitoring of H2S concentration in an aerated grit chamber of a wastewater treatment plant (WWTP) in Suzhou was carried out from August to October with heavy odor pollution in 2014 and 2015 respectively (the sampling interval was 30 s). The H2S emission concentration of WWTP fluctuated greatly and had obvious variation characteristics, which was the highest at 11:00-14:00, 17:00-19:00 and 22:00-02:00 and the lowest at 05:00-09:00 and 15:00-16:00 in a day. The effects of wastewater flow rate, sulfide concentration, pH value and water temperature on H2S emission concentration were further investigated. The emission concentration of H2S had significant positive correlations with wastewater flow rate (1 180-2 360 m3/h), sulfide concentration (0.36-0.71 mg/L) and water temperature (26.8-27.1 ℃). The Pearson correlation coefficients of sulfide concentration and water temperature with H2S concentration were 0.84 and 0.62, respectively. Within a day, pH value fluctuated within a small range (7.07-7.23), showing no significant correlation with H2S concentration.
更新日期/Last Update: 2020-04-01