厌氧颗粒污泥高效反硝化处理高盐度树脂再生液  

Anaerobic Granular Sludge for Efficient Denitrification Treatment of High Salinity Resin Regeneration Liquid

作　　者：李忠强 骆倩 黄慧敏 梅荣武 胡正峰 张胜军 LI Zhong‑qiang;LUO Qian;HUANG Hui‑min;MEI Rong‑wu;HU Zheng‑feng;ZHANG Sheng‑jun(Eco‑Environment Science Research&Design Institute of Zhejiang Province,Hangzhou 310007,China;School of Geography and Environmental Sciences,Zhejiang Normal University,Jinhua 321019,China;Zhejiang Huanke Environment Academy Co.Ltd.,Hangzhou 310007,China;Key Laboratory of Environmental Pollution Control Technology of Zhejiang Province,State Environmental Protection EngineeringCenter for Water Pollution Control,Hangzhou 310007,China)

机构地区：[1]浙江省生态环境科学设计研究院,浙江杭州310007 [2]浙江师范大学地理与环境科学学院,浙江金华321019 [3]浙江环科环境研究院有限公司,浙江杭州310007 [4]国家环境保护水污染控制工程技术<浙江>中心浙江省环境污染控制技术研究重点实验室,浙江杭州310007

出　　处：《中国给水排水》2024年第7期19-26,共8页China Water & Wastewater

基　　金：浙江省重点研发计划项目(2021C03021);浙江省住建厅建设科研项目(自筹)课题(2022K154)。

摘　　要：针对目前离子交换树脂再生液高盐度的问题,在上流式污泥床反应器内接种厌氧颗粒污泥,采用连续进水的方式逐步提高进水NO_(3)^(-)-N负荷和盐度,对污泥进行驯化。优化反应器运行参数,得到最适盐度为2.0%、HRT为12 h、C/N为3.3、上升流速为1.5 m/h。在该参数下TN去除率达90%以上,出水TN低于10 mg/L,极限脱氮与再生液处理混合出水TN<1.5 mg/L,达到地表水Ⅳ类标准,处理费用为0.587元/m^(3)。对运行前中后期的颗粒污泥进行电镜和高通量测序,污泥表面杆状菌明显增多,变形菌门占比随时间增加,反硝化杆菌逐渐成为优势菌种。该城镇污水处理厂尾水树脂极限脱氮及高盐度再生液处理技术经济高效,为树脂再生废水的处理提供了新的选择。To address the problem of handling high‑salinity regeneration liquid generated from the ion exchange resin regeneration process,anaerobic granular sludge was inoculated in an upflow sludge bed reactor.A continuous inflow method was adopted to gradually increase the inflow NO_(3)^(-)-N load and salinity to domesticate the sludge.The operational parameters of the reactor were optimized to achieve the optimal salinity of 2.0%,hydraulic retention time(HRT)of 12 hours,carbon‑to‑nitrogen ratio(C/N)of 3.3,and upflow velocity of 1.5 m/h.Under these conditions,the TN removal rate reached over 90%,the effluent TN was below 10 mg/L,and the combined effluent TN from the ultimate denitrification and regeneration liquid treatment was less than 1.5 mg/L,meeting the surface water classⅣstandard.The treatment cost was 0.587 yuan/m^(3).Scanning electron microscopy and high‑throughput sequencing were performed on the granular sludge during different stages of operation.The number of filamentous bacteria on the sludge surface increased significantly,and the proportion of Proteobacteria increased over time,with denitrifying bacteria gradually becoming dominant.The developed technique is economical and efficient,and provides an option for the treatment of high‑salinity regeneration liquid.

关 键 词：树脂再生液 颗粒污泥 反硝化 高盐度 微生物群落 

分 类 号：TU992[建筑科学—市政工程]