废乳化液处理技术“水-能-碳”综合评价体系的构建及应用

翟龚琪; 黄翔峰; 熊永娇; 李乐雪; 张佳路; 王丽雅; 彭开铭

doi:10.13205/j.hjgc.202504015

废乳化液处理技术“水-能-碳”综合评价体系的构建及应用

doi: 10.13205/j.hjgc.202504015

1. 同济大学环境科学与工程学院,上海 200092;
2. 同济大学碳中和研究院,上海 200092

基金项目:

国家自然科学基金“磁性纳米颗粒捕集乳化剂的功能化设计及其纳乳液破乳机制”（51978490）；上海市自然科学基金“磁场对功能化磁性纳米粒子破乳过程的驱动机制”（20ZDR1461200）

详细信息

作者简介:
翟龚琪（2001-），女，硕士研究生在读，主要研究方向为工业废水处理技术。2232779@tongji.edu.cn

通讯作者:
彭开铭（1986-），男，助理教授，主要研究方向为工业废水处理技术。pengkaiming@tongji.edu.cn

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出版历程
- 收稿日期: 2023-08-19
- 录用日期: 2023-12-12
- 修回日期: 2023-11-20
- 网络出版日期: 2025-06-07
- 刊出日期: 2025-04-01

Construction and application of a Water - Energy - Carbon comprehensive evaluation system for emulsion treatment technologies

1. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Institute of Carbon Neutrality, Tongji University, Shanghai 200092, China

摘要

摘要: 双碳背景下，为了全面客观评价废乳化液处理技术，构建了一种“水-能-碳”综合评价体系，采用进水水质、油类削减量、耗电量、能耗碳排放、药耗碳排放、碳补偿指标及“水-能-碳”耦合指数对化学破乳、蒸发、膜分离等废乳化液处理技术进行综合评价，并结合工程案例对技术展开量化分析。研究发现，传统化学破乳法应用最为广泛，呈低能耗高药耗特征；近年来，蒸发法也被用于废乳化液处理，呈高能耗高碳排特征；膜分离法的实验研究较多，呈低能耗低碳排特征，具有较好的发展前景。江苏某废乳化液处理中心的“水-能-碳”评价结果显示：机械蒸汽再压缩、混凝气浮和磁絮凝单元的碳排放量分别为38.55，22.87，13.39 kg CO₂eq/kg，“水-能-碳”耦合指数分别为0.379、0.524和0.705。机械蒸汽再压缩普适性强、处理效果好，但能耗、碳排放量高，综合性能一般；磁絮凝作为新型化学破乳法，处理效果好，能耗、碳排放量少，水能碳耦合水平高，综合性能更优。该研究可为废乳化液处理技术的评价及选择提供新的思路与方法。
- 废乳化液 /
- 破乳分离技术 /
- 评价体系 /
- 水-能-碳 /
- 碳排放
Abstract: The treatment technologies for waste emulsions are diverse， with significant differences in technical characteristics and applicability. However， a unified standard for technology evaluation has not yet been established. Under the backdrop of carbon peaking and carbon neutrality， how to conduct a comprehensive and objective technical evaluation of waste emulsion treatment technologies has attracted great attention. In this paper， a comprehensive evaluation system of Water-Energy-Carbon was constructed， and the waste emulsion treatment technologies such as chemical demulsification， evaporation， and membrane separation were comprehensively evaluated by using influent water quality， oil reduction， electricity consumption， energy consumption carbon emissions， drug consumption carbon emissions， carbon compensation indexes， and Water-Energy-Carbon coupling index （WECCI）， and these technologies were quantitatively analyzed in combination with engineering cases.The research revealed that the traditional chemical demulsification method was the most widely applied， primarily for waste emulsions with simple compositions and low pollutants concentrations. It was characterized by low energy consumption but high chemical consumption， with an energy consumption typically below 10 kW·h/t and carbon emissions ranging from 20 to 80 kg CO₂eq/kg. Evaporation methods were also employed for waste emulsion treatment in recent years， particularly for complex， stable emulsions with high oil content. It was characterized by high energy consumption and high carbon emissions， with energy consumption reaching 60 kW·h/t and carbon emissions ranging from 10 to 40 kg CO₂eq/kg.Membrane separation technology was extensively studied experimentally. It was characterized by low energy consumption and low carbon emissions， with energy consumption typically ranging from 5 kW·h/t to 35 kW·h/t and carbon emissions below 20 kg CO₂eq/kg. This method showed promising prospects for future development. The Water-Energy-Carbon evaluation results of a waste emulsion treatment center in Jiangsu showed that the carbon emissions of mechanical vapor recompression （MVR）， coagulation air flotation， and magnetic flocculation units were 38.55， 22.87 and 13.39 kg CO₂eq/kg， respectively， and their WECCI were 0.379， 0.524， and 0.705， respectively. MVR had strong universality and good treatment effect， but the energy consumption and carbon emissions were high， and the comprehensive performance was medididare. As a new type of chemical demulsification method， magnetic flocculation had good treatment effects， low energy consumption and carbon emissions， high level of hydro-carbon coupling， indicating a better comprehensive performance. This study provides a new multidimensional method for the evaluation and selection of waste emulsion treatment technologies. Future research can expand the evaluation system by incorporating indicators such as lifecycle assessment and regional adaptability， ensuring its high applicability in diverse environments.
- waste emulsions /
- demulsification and separation technology /
- evaluation system /
- Water-Energy-Carbon /
- carbon emissions

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