| 城市污水厂H2S排放浓度与水质和泥质指标的相关性 |
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| 引用本文： | 王智超,席劲瑛,欧阳云,胡洪营.城市污水厂H2S排放浓度与水质和泥质指标的相关性[J].环境科学研究,2013,26(9):989-994. |
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| 作者姓名： | 王智超 席劲瑛 欧阳云 胡洪营 |
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| 作者单位： | 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 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项，环境模拟与污染控制国家重点联合实验室专项 |
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| 摘 要： | 于2011年7月—2012年11月对某污水厂进水单元(包括进水泵房、格栅和曝气沉砂池)、污泥浓缩池及储泥池中ρ(H2S)及其对应的污水水质〔温度、ρ(DO)、pH、ρ(CODMn)、ρ(硫化物)〕和污泥泥质指标〔w(AVS)(AVS为酸可挥发性硫化物)、ORP(氧化还原电位)、温度、pH〕进行了长期监测,分别采用单因素和多因素统计方法分析了ρ(H2S)与污水水质、污泥泥质指标之间的相关性. 结果表明:监测期间进水泵房、格栅、曝气沉砂池、污泥浓缩池及储泥池中的ρ(H2S)分别为0.08~4.27、0.04~111.61、0.16~115.69、0.007~0.04和0.21~4.00mg/m3. 进水泵房、格栅和曝气沉砂池中的ρ(H2S)与污水温度呈显著正相关,与污水pH、 ρ(DO)呈显著负相关. 当污水温度低于15℃、ρ(DO)高于0.20mg/L或pH高于7.2时,进水泵房、格栅、曝气沉砂池中ρ(H2S)维持在较低的水平,分别低于0.27、3.90和7.34mg/m3. 污泥浓缩池和储泥池中ρ(H2S)与污泥w(AVS)呈显著正相关,与ORP呈显著负相关.
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| 关 键 词： | 城市污水处理厂 H2S 水质 泥质 |
| 收稿时间： | 2013/3/20 0:00:00 |
| 修稿时间： | 2013/5/30 0:00:00 |
Correlation between H2S Concentration and Characteristic Parameters of Wastewater and Sludge in a Municipal Wastewater Treatment Plant |
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| WANG Zhi-chao,XI Jin-ying,OUYANG Yun and HU Hong-ying.Correlation between H2S Concentration and Characteristic Parameters of Wastewater and Sludge in a Municipal Wastewater Treatment Plant[J].Research of Environmental Sciences,2013,26(9):989-994. |
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| Authors: | WANG Zhi-chao XI Jin-ying OUYANG Yun and HU Hong-ying |
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| Affiliation: | 1.State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China2.Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China |
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| Abstract: | Totally 3272wastewater treatment plants (WWTPs) were built by the end of September 2012in China. The odor pollution related to WWTPs draws much attention and the odor control in WWTPs becomes more and more important in China. As one of the most typical odorants in WWTPs, H2S is generated from the wastewater and sludge and ρ(H2S) can be determined by characteristics of wastewater or sludge. The correlated parameters of wastewater includes temperature, ρ(DO), pH, ρ(CODMn) and sulfide ρS(Ⅱ)]. The correlated parameters of sludge includes acid volatile sulfide (AVS), oxidation-reduction potential (ORP), temperature and pH. So far, most of studies about the relationship between ρ(H2S) and the characteristic parameters of wastewater or sludge are carried out under laboratory conditions. The concentrations of H2S emitted from pump station, fine screen, aerated grit chamber, sludge thickening tank and sludge storage tank of a municipal wastewater treatment plant were monitored for long period. Meanwhile, wastewater parameters (temperature, ρ(DO), pH, ρ(CODMn), ρS(Ⅱ)]) and sludge parameters (AVS, ORP, temperature, pH) were also monitored. The correlation between ρ(H2S) and the characteristic parameters of wastewater or sludge was analyzed by the single variable and multivariate analyses. The results showed that the ρ(H2S) in the pump station was 0.08~4.27mg/m3, the ρ(H2S) in fine screen was 0.04~111.61mg/m3, the ρ(H2S) in aerated grit chamber was 0.16~115.69mg/m3, the ρ(H2S) in sludge thickening tank was 0.007~0.04mg/m3and the ρ(H2S) in sludge storage tank was 0.21~4.00mg/m3.The results also showed that the ρ(H2S) in the pump station, fine screen and aerated grit chamber had significant positive correlation with wastewater temperature and significant negative correlation with pH or ρ(DO) of the wastewater. When the wastewater temperature is under 15℃, or ρ(DO) is above 0.20mg/L, or pH is above 7.2, the ρ(H2S) in pump station, fine screen and aerated grit chamber were quite lower than those under other conditions. Under these conditions, the ρ(H2S) in pumping station, fine screen and aerated grid chamber was kept under 0.27,3.90and 7.34mg/m3. The ρ(H2S) in the sludge thickening tank and sludge storage tank had a significant positive correlation with sludge AVS and a significant negative correlation with sludge ORP. |
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| Keywords: | municipal wastewater treatment plant H2S wastewater characteristics sludge characteristics |
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