Evaluation of process for conversion of sewage sludge to activated carbon for wastewater treatment

该提案的目的是提供一种新的工艺，将废水处理污泥转化为含碳吸附剂，该产品可以增强并用于处理二级流出物，在排放到环境中之前减少新出现的污染物。这一废物变资源的过程 ** 不仅会减少废物的数量，而且还可能有效地处理雨水和 ** 稳定沉积物/土壤中新出现的污染物。这项工作将支持 ** 渐进解决方案的领导者大温哥华市促进其关于“液体废物和资源综合管理 **”和“固体废物和资源综合管理”以及废物变资源的可持续区域倡议。这项研究将由李博士和她在UBC的土木工程专业的学生进行，将涉及几个部分：（1）通过操纵条件优化活化，包括热解温度，加热时间，使用来自大温哥华（MV）的污水处理厂二次污泥的生物质的升温速率。(2)** 比较在相同操作条件下获得的小型和大型熔炉中的活性炭的关键物理性质（比表面积、表面官能团）和化学吸附性 **，以确定它们对多环芳烃（PAH）的物理性质。(3)将多环芳烃的吸附效率与吸附剂的理化性质相关联。(4)将新吸附剂的结果与UBC试验工厂污泥产生的结果进行比较。这项研究将为进一步更有针对性的测试提供基础，这些测试有可能直接应用于废水处理厂，以去除 ** 水环境中出现的污染物。它将提供关于以工业规模生产 ** 以污泥为基础的活性炭的经济可行性和可持续性的资料，并与其他污泥减量技术进行比较。

The goal of this proposal is to provide a novel process which converts wastewater treatment sludge into a**carbonaceous sorbent, a product which can be enhanced and used to treat secondary effluent, reducing**emerging contaminants before they are discharged to the environment. This waste-to-resources process would**not only reduce the quantity of waste, but also potentially be effective for stormwater treatment and for**stabilizing emerging contaminants in sediments/soils. This work will support Metro-Vancouver, a leader in**progressive solutions, in promoting its sustainable region initiative on "Integrated Liquid Waste and Resource**Management" and "Integrated Solid Waste and Resource Management", as well as waste-to-resources. The**research, to be carried out by Dr. Li and her Civil Engineering students at UBC, will involve several**components: (1) Optimize the activation by manipulating conditions, including pyrolysis temperature, heating**time, temperature ramping rate with biomass using WWTP secondary sludge from Metro Vancouver (MV). (2)**Compare key physical properties (specific surface area, surface functional group) and chemical adsorptivities**of activated carbons from small and larger furnaces obtained under the same operating conditions for their**physical properties on polyaromatic hydrocarbons (PAHs). (3) Correlate sorption efficiencies for PAHs and the**physiochemical properties of the sorbents. (4) Compare the results for the new sorbents with those produced**from UBC pilot plant sludge. This study will provide a foundation for further more focused testing that with**potential for direct application at wastewater treatment plants for removal of emerging contaminants from**aqueous environments. It will provide information on the economic viability and sustainability of producing**sludge-based activated carbons on an industrial scale, compared with alternative sludge reduction technologies.