基于非平衡等离子体热化学处理技术的高浓高盐废水浓缩物资源化基础研究

The problem of terminal concentrate treatment has become the bottleneck of wastewater zero emission development. The widely used incineration technology is restricted by the problems of toxic material discharge, furnace coking corrosion and low recovery efficiency of ash residue. To find an effective method for recovering the salt and organic matter from the wastewater concentrate has become the a hot topic In this study, non-equilibrium plasma technology was used to treat high salt organic wastewater concentrate，and the advantages of plasma torch(high energy density, high reaction controllability and chlorinated organic waste destroying)were fully utilized to recover the combustible gas and salt crystals without secondary pollution. It is planned to use argon, air and water vapor as working gas to mix and molten the concentrate with radio frequency plasma torch；The temperature, spectra and image recording devices were used to monitor the reaction process and conduct kinetic analysis；The results were evaluated and the reaction paths were determined according to the product analysis；to change the composition and treatment conditions of the sample, test the synergistic and material adaptability of the reaction system, and determine the optimal balance control scheme. This study provides a theoretical basis for the practical application of plasma technology in the field of terminal waste disposal of wastewater zero emission，at the same time, it has important reference value for the harmless and resource treatment of high salt and high chlorine organic waste.

末端浓缩物处理问题已成为废水零排放发展的瓶颈。现广泛采用的焚烧技术受到有毒物质排放、炉膛结焦腐蚀及灰渣回收利用率低等问题的制约。寻求高效的废水浓缩物中盐类及有机质的资源转化方法成为当前的研究热点。本研究提出采用非平衡等离子体技术处理高浓高盐废水浓缩物，充分利用等离子体炬高能量密度、高反应可控性及处理含氯有机废物方面的优势，达到在无二次污染的前提下分别回收有机可燃气及洁净盐晶体之目的。计划分别以氩气、空气、水蒸气作为工作气体，运用射频等离子体炬对废水浓缩废液/盐进行混合并流及接触熔融处理；利用温度、光谱及影像记录装置监视反应过程并进行动力学分析；通过产物分析评价处理效果，确定反应路径；改变样品组成及处理条件，测试反应体系协同性及物料适应性，确定最佳质能平衡控制方案。本研究为等离子体技术在废水零排放末端废物处理领域的实际应用提供理论依据，并对高盐高氯有机废物无害化、资源化处理具有重要参考价值。

末端浓缩物处理问题已成为废水零排放发展的瓶颈。现广泛采用的焚烧技术受到有毒物质排放、炉膛结焦腐蚀及灰渣回收利用率低等问题的制约。寻求高效的废水浓缩物中盐类及有机质的资源转化方法成为当前的研究热点。本研究提出采用非平衡等离子体技术处理高浓高盐废水浓缩物，充分利用等离子体炬高能量密度、高反应可控性及处理含氯有机废物方面的优势，达到在无二次污染的前提下分别回收有机可燃气及洁净盐晶体之目的。. 首先，开展射频反应器内流场、温度场及物料传热相变过程研究，应用工程软件预测传热及相变过程，针对性地对反应器主体进行保护设计，对现场实际采集的废物样品进行等离子体处理实验；其次，开展废物分解高速反应过程的动力学分析，进行动力学三因子推导，改进废物分解的动力学模型，考察评估动力学模型的计算数值与实验结果的吻合程度并进一步对模型进行改进。然后，开展气固产物测试分析、迁移反应路径建立及资源化评估，通过产物分析评价处理效果，确定反应路径，建立有机物分解气化平衡 GasifEq 模型，并给出回收再利用方法及建议。最后，测试反应体系协同性及物料适应性并确定最佳质能平衡控制方案，改变样品组成及处理条件，测试反应体系协同性及物料适应性，为处理技术的实际应用及产能分析提供理论依据。. 本研究为等离子体技术在废水零排放末端废物处理领域的实际应用提供理论依据，并对高盐高氯有机废物无害化、资源化处理具有重要参考价值。