LIHuaibo,WANGYan,ZHOUZheng,et al.Greenhouse Gas Emission of Wastewater Treatment Plants in Taihu Lake Basin[J].China Water & Wastewater,2026,42(1):99-104.
太湖流域城镇污水处理厂温室气体排放研究
- Title:
- Greenhouse Gas Emission of Wastewater Treatment Plants in Taihu Lake Basin
- Keywords:
- wastewater treatment plant; greenhouse gas accounting; carbon dioxide emission equivalent; Taihu Lake basin
- 摘要:
- 以污水处理厂二氧化碳排放当量与比二氧化碳排放当量为基础，探究了太湖流域污水处理厂温室气体排放现状、处理水量和进水水质与比二氧化碳排放当量之间的关系、工艺类型和负荷率与碳排放强度之间的关系。结果表明，不同规模的污水处理厂二氧化碳排放当量具有显著差异；当处理水量>3×104 m3/d、进水COD浓度≥300 mg/L、进水TN浓度≥30 mg/L时，比二氧化碳排放当量最低；不同工艺的平均碳排放强度（以CO2计）为0.77~0.91 kg/m3，其中氧化沟工艺的平均碳排放强度最小；AAO工艺不同负荷率区间下的碳排放强度具有显著差异，碳排放强度最小时的负荷率为（90%，100%］，而氧化沟为（80%，90%］。
- Abstract:
- Based on the carbon dioxide emission equivalent and specific carbon dioxide emission equivalent of wastewater treatment plants, this study investigated the current status of greenhouse gas emissions from such facilities in Taihu Lake basin. It further examined the relationship between treatment volume and influent water quality with specific carbon dioxide emission equivalent, as well as the influence of treatment process type and loading rate on carbon emission intensity of treated water. There were notable variations in carbon dioxide emission equivalents across wastewater treatment plants of different scales. The lowest specific carbon dioxide emission equivalent were observed when the wastewater treatment capacity exceeded 3×104 m3/d, with influent COD not less than 300 mg/L and influent TN greater than or equal to 30 mg/L. The average carbon emission intensity (accounted by CO2) across different treatment processes ranged from 0.77 kg/m3 to 0.91 kg/m3, with the oxidation ditch process exhibiting the lowest average carbon dioxide emission intensity. The AAO process demonstrated notable variation in carbon emission intensity under different loading rate intervals. The minimum specific carbon emission intensity for the AAO process occurred at a loading rate of 90% to 100%, whereas for the oxidation ditch process, this range was observed at 80% to 90%.
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