Article(id=1314923027901547359, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314922986466009203, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1754755200000, receivedDateStr=2025-08-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791431679940, onlineDateStr=2026-10-08, pubDate=1773936000000, pubDateStr=2026-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791431679940, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791431679940, creator=13701087609, updateTime=1791431679940, updator=13701087609, issue=Issue{id=1314922986466009203, tenantId=1146029695717560320, journalId=1234093305789726721, year='2026', volume='46', issue='3', pageStart='1185', pageEnd='1776', issueExtLink='null', onlineDate='null', pubDate='1773936000000', pubDateStr='2026-03-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1791431670061, creator='13701087609', updateTime=1791431955369, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314924183251935526, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314922986466009203, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314924183251935527, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314922986466009203, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1344, endPage=1355, ext={EN=ArticleExt(id=1314923028153205600, articleId=1314923027901547359, tenantId=1146029695717560320, journalId=1234093305789726721, language=EN, title=Research on the start-up and denitrification performance of long term 5℃ low-temperature pure MBBR process, columnId=1234106386360103680, journalTitle=China Environmental Science, columnName=Water Pollution Control, runingTitle=null, highlight=null, articleAbstract=

Aiming at the problems of low sewage temperature, poor nitrogen removal efficiency and weak shock resistance of traditional activated sludge process in the alpine regions of southwest China, a pilot-scale experiment of pure moving bed biofilm reactor (MBBR) was conducted. The startup characteristics, nitrogen removal performance, and shock resistance mechanism under long-term ultra-low temperature conditions were systematically investigated. The results showed that the pure MBBR was successfully started up within 25days at a water temperature of (6.14±1.06)℃. During a long-term operation of 245days with an average water temperature of (5.45±1.29)℃, superior effluent quality was achieved with an actual hydraulic retention time (HRT) only 20% of that of the activated sludge process in the same WWTP. After a 1-month shutdown, the treatment capacity was fully restored within only 14days. In the pure-membrane MBBR system, the first-stage nitrification zone realized the removal of inhibitors such as chemical oxygen demand (COD) and preliminary nitrification, the second stage served as the main nitrification zone, and the third stage ensured stable effluent quality. A single-stage process was adopted in the denitrification zone, where the reflux ratio was flexibly adjusted according to the residual nitrate nitrogen in the anoxic zone to enhance nitrogen removal. Regarding nitrogen removal potential, when facing influent quality shock, increasing dissolved oxygen (DO) in the aerobic zone to strengthen mass transfer and oxygen supply could further improve the system's nitrification load by more than 25%, while driving the nitrogen removal capacity to increase by more than 10%. The excellent low-temperature resistance of the pure MBBR was attributed to two aspects: on one hand, the biofilm enhanced the enrichment of nitrogen-removing functional bacteria, especially low-temperature-tolerant strains such as Flavobacterium and Dechloromonas; On the other hand, the biofilm's dense structure and complex microbial community supported thermal insulation. For pure MBBR design, enhanced functional bacteria enrichment and high effective biomass should be concurrently considered, thus conferring higher treatment load.

, authors=Wen-jie HAN¹, Zhong-fu ZHAO², Jia-zhong ZHOU^{1, *}, Yan-ruo ZHAO², Zhong-qi YANG¹, Yu-hai LIANG³, authorsList=Wen-jie HAN, Zhong-fu ZHAO, Jia-zhong ZHOU, Yan-ruo ZHAO, Zhong-qi YANG, Yu-hai LIANG, authorCompany=null, correspAuthors=Jia-zhong ZHOU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314923028383892321, articleId=1314923027901547359, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=长期5℃低温生活污水纯膜MBBR启动及脱氮性能, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

针对我国西南高寒地区污水温度低，传统活性污泥法脱氮效率差、抗冲击能力弱等问题，通过纯膜MBBR（移动床生物膜反应器）中试，系统探究了其在长周期超低温环境下的启动特性、脱氮效能及抗冲击机制．结果表明，纯膜MBBR在（6.14±1.06）℃水温下，25d启动成功；在长达245d，（5.45±1.29）℃水温下，实际HRT仅为同厂活性污泥20%基础上可达到更优出水水质；纯膜MBBR停机1个月，仅需14d即完全恢复处理能力．纯膜MBBR一级硝化区实现COD等抑制物去除与初步硝化，二级为主硝化区，三级保障出水稳定；反硝化区采用单级工艺，根据缺氧区硝氮残留灵活调控回流比以强化脱氮．在脱氮潜力上，当面临进水水质冲击时，好氧区提高溶解氧（DO）强化传质传氧，可进一步提高系统硝化负荷25%以上，同时带动脱氮能力提升10%以上．纯膜MBBR抗低温，一方面源于生物膜强化了脱氮功能菌，特别是Flavobacterium与Dechloromonas等耐低温脱氮菌的富集能力，另一方面则源于生物膜致密的结构和复杂的生物相，为保温性能提供了支撑．纯膜MBBR设计需同步考虑功能菌强化富集和较高的有效生物量，从而使其具备更高的处理负荷．

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韩文杰（1990-），男，山东青岛人，正高级工程师，硕士，主要研究方向为污水生物脱氮技术及生物质降解．发表论文30余篇．hanwenjie1003@163.com.

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韩文杰（1990-），男，山东青岛人，正高级工程师，硕士，主要研究方向为污水生物脱氮技术及生物质降解．发表论文30余篇．hanwenjie1003@163.com.

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