中国给水排水第九届污水处理厂提标改造高级研讨会 成都龙之梦大酒店，3月9日一10日，2025年 城市污水生物处理过程碳效率 The carbon efficiency of biological process in municipal sewage treatment 曹业始
Contents 内容 BNRand carbon(donor) 生物脱氮除磷和碳源(电子供体) Maximumefficiency:stoichiometriccoefficient 最大效率：化学计量系数 Carbonefficiencyandrelevance 碳效率及其意义 Cases 案例 ConventionalBNPR 常规BNPR InnovativeBNPR 创新BNPR Takehome Whatareinyourhand tomaximizetheBNPR 要点 efficiency? 常规BNPR最大限度地提高效率 Maximizethepotentialsoftheinnovative 创新过程最大限度地发挥潜力 process
化学计量系数： 最低C/N要求 Stoichiometric coefficients: minimum C/N requirement NO-NCOD→ N2; PO4-VFA 5.0 碳：参与生化反应的溶解性和固态COD 固态磷 BiodegradableCarbon:solubleandsolidCOD N.O N N fixation NO 3.3 Anammox Ammonification NH Org N nitrification Nitrification NO C/N Ratio Require NO Anoxic 2.0 Nitrification -oxic 快捷脱氮：减少硝化作用的曝气需求，反硝化补充碳，碱度需求，较低的所需C/N，允 许上游碳重定向，减少好氧处理量.
因为只有一小部分进水氨必须进行好氧氧化，采用 anammox的主流工艺可以显著减少好氧固体滞留时间（SRT）.
0.8 The purported benefits of shortcut nitrogen removal are: decreased aeration demandsfornitrification supplemental carbon demandsfor denitrification and alkalinity demands ii. alowerrequiredC/Nratioallowing forupstream carbon redirection and thus decreased aerobic treatment volume. Conventional Nitrite Shunt PdNA PNA i. mainstream anammoxprocesses allowfor significant aerobic solids retention time (SRT) reduction as only a fraction of the influent ammonia must be oxidized aerobically removalpathwayforpletenitrogenremoval. Yu et al. 2022 McCulloughetal. 2022
c/N:1 碳(COD)利用系数 fc/n : COD utilization coefficient stoichiometric Plant type Fig fC/N Definition fc/N = △COD/AN Activated sludge: Separate 7.9 0.9-1.0 Post denitrification 7.1 0.2-0.5 COD.
x：好氧异养反应，COD02 CO2 Maximumfc/n=100% Recycle 7.12 0.4-0.6 Normalrange of C/N:40%-90% Altermating 7.13 0.4-0.6 influencingfactorsoffc/N: Simultaneous 7.16 0.3-0.6 Mixed stoichiometric Organic matter (C/N)optimum Unit Filters: Organic matterin 3-3.5 Kg BOD/kg N wastewater Submerged filters/rotating discs with 0.4-0.7 recycle 4-5 Kg COD/N Submerged filters/rotating discs without 7.17 0.9-1.0 Acetic acid 2.9-3.5 Kg HAc/kg N recycle 3.1-3.7 Kg COD/Kg N Filter with backwash without recycle 7.18 0.5-0.8 0.9-1.1 Mol HAc/Mol N Fluidized filter 7.19 0.40.7 Table 7.3:Optimum (C/N）ratio for different types of organicmatter to be Table7.4Theefficiencyfactor fc/N fororganicmatterfordifferentplant used for denitrification design for denitrification Data from/15 Henze et al. 2014
改良常规生物脱氮除磷工艺， 苏州排水公司 Conventional Modified BNPR SDC Suzhou COD SS TN COD/TN Influentsewage 304 131.6 37.4 8.1 2nd effluent 19 5.1 6.8 Removalratio 92 76% 改进巴登堡（Bardenpho） 风机房 100 20 120 Q=105r 160kW 进水TN 出水TN 18 图1-4四期反应池工艺流程图 TN去除率 100 80 碳氮比 16 14 80 12 进出水TN浓度（mg/L） 0 碳氮比 50 TN夫除率（%） 40 30 20 20 10 信息归苏州排水公司.
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