SNAD—藻类工艺在污泥消化液处理中的应用  

Application of SNAD-Algae Coupling Process in Sludge Digestion Liquid Treatment

作　　者：邹瑜 张国权[2] 徐晓晨[2] 杨凤林[2] ZOU Yu;ZHANG Guo-quan;XU Xiao-chen;YANG Feng-lin(China Vanke Co.Ltd.,Shenzhen 518000,China;Key Laboratory of Industrial Ecology and Environmental Engineering,School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]万科企业股份有限公司,广东深圳518000 [2]大连理工大学环境学院工业生态与环境工程教育部重点实验室,辽宁大连116024

出　　处：《中国给水排水》2021年第15期14-20,共7页China Water & Wastewater

基　　金：中国博士后科学基金资助项目(2020M672845)。

摘　　要：近年来以能源回收和资源循环为主的理念正作为污水及污泥处理领域行业发展的首要衡量目标之一。通过与大连某污泥处理厂现有污泥发酵—亚硝化/厌氧氨氧化/反硝化(SNAD)—MBBR处理工艺进行对比,对提出的SNAD—藻类耦合工艺的放大实际投产进行了能耗和运行成本分析。结果表明,该耦合工艺可以使污染物得到进一步去除,并在整体系统中基本实现碳、氮、磷资源回收。该工艺单位能耗为2.55 kW·h/m^(3),运行成本为1.94元/m^(3),经济效益与环境效益显著。此外,通过SNAD—藻类耦合工艺回收污水中能量(CH4)并优化各处理单元运行,产能与耗能的比值为1.05,实现了整套系统能量中和的运行目标。In recent years, the concept of energy recovery and resource recycling is becoming one of the primary objectives for the development of sewage and sludge treatment industry. Compared with the existing sludge digestion-SNAD-MBBR treatment process of a sludge treatment plant in Dalian, energy consumption and operation cost of the proposed SNAD-algae coupling process were analyzed. The coupling process could further remove pollutants and basically realize resource recovery of carbon, nitrogen and phosphorus in the overall system. The energy consumption and operation cost of the coupling process were 2.55 kW·h/m^(3) and 1.94 yuan/m^(3), indicating that the economic and environmental benefits were significant. In addition, energy(CH4) in wastewater was recovered by SNAD-algae coupling process, and the operation of each treatment unit was optimized. The ratio of production capacity to energy consumption was 1.05, which achieved the operation goal of energy neutralization of the whole system.

关 键 词：污泥消化液 藻类光生物反应器 SNAD 能耗 

分 类 号：TU992[建筑科学—市政工程]