School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.
School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China.
J Environ Manage. 2019 Apr 1;235:423-431. doi: 10.1016/j.jenvman.2019.01.093. Epub 2019 Jan 30.
This study proposes a new evaluation method based on expert scoring and data normalization to optimize operational conditions of sludge pyrolysis and assess the comprehensive benefits of the adsorption process in coking wastewater treatment. Pyrolysis temperature, holding time and heating rate were considered as the experimental parameters in sludge pyrolysis. They were optimized by the proposed method, considering raw material cost, net energy consumption, carbon emission and adsorption capacity of sludge-derived bio-char (SB). Two operational modes (cyclic centralized and traditional distributed) were compared to identify a better solution for coking wastewater treatment. The results showed that the optimized operational conditions of coking sludge pyrolysis were that temperature of 550 °C, holding time of 60 min and heating rate of 20 °C/min, using the proposed method. Cyclic centralized mode has been demonstrated as the better mode for wastewater treatment by the proposed method, due to the higher comprehensive score of -0.296. It is a promising technology for sustainable wastewater treatment in terms of sludge recycling, energy saving and carbon emission reduction.
本研究提出了一种基于专家评分和数据归一化的新评价方法，以优化污泥热解的操作条件，并评估焦化废水处理中吸附过程的综合效益。在污泥热解中，考虑了热解温度、保温时间和加热速率作为实验参数。通过提出的方法，综合考虑原料成本、净能耗、碳排放和污泥衍生生物炭（SB）的吸附能力，对其进行了优化。比较了两种操作模式（循环集中式和传统分布式），以确定一种更好的焦化废水处理解决方案。结果表明，采用提出的方法，优化的焦化污泥热解操作条件为温度 550°C、保温时间 60min 和加热速率 20°C/min。提出的方法表明，循环集中式模式是更好的废水处理模式，其综合得分为-0.296。从污泥回收、节能和减少碳排放的角度来看，该技术有望成为可持续的废水处理技术。
