MBBR用于南方某污水厂强化脱氮效果分析
- Title:
- Analysis of Denitrification Efficiency of a Wastewater Treatment Plant in South China Enhanced by MBBR
- Keywords:
- MBBR; biological denitrification; simultaneous nitrification and denitrification; suspended carrier
- 摘要:
- 浙江某污水厂设计规模为16×104 m3/d，采用Bardenpho—MBBR工艺进行升级改造后，生化池出水COD、NH4+ - N、TN、TP均值分别为17.2、0.37、7.72、0.168 mg/L，在不投加碳源的情况下即可达到准Ⅳ类水标准，生物脱氮除磷效果良好。对生化池各功能区沿程采样测定发现，好氧MBBR区对TN的去除率为28%~46%，受到泥浆水冲击后也能保持在15%~22%，系统高效去除TN得益于好氧MBBR区的同步硝化反硝化（SND）作用；由于好氧区的SND现象，平均可以节省0.23元/m3的碳源费用，年节约碳源费用近1 343.2万元；生物膜厚度和溶解氧的控制对于稳定表现SND有重要影响；系统中微生物的高通量测序结果显示，悬浮载体上硝化菌丰度为32.19%、反硝化菌丰度为4.86%，硝化菌和反硝化菌同时存在为SND现象的产生提供了微观保证；冬季低温时，悬浮载体实际承担了系统近90%的硝化负荷。
- Abstract:
- The design scale of a wastewater treatment plant (WWTP) in Zhejiang Province was 16×104 m3/d. After retrofitted by Bardenpho-MBBR, the effluent COD, NH4+ - N, TN and TP of the WWTP were 17.2 mg/L, 0.37 mg/L, 7.72 mg/L and 0.168 mg/L, respectively. Without carbon addition, the effluent almost achieved class Ⅳ level of Environmental Quality Standards for Surface Water, which indicated that good biological nitrogen and phosphorus removal were obtained. According to the measurement of every functional area of the biochemical tank, 28%-46% of TN was removed in the aerobic area of the MBBR, and the removal efficiency could be maintained between 15% and 22% after the shock of muddy water. The good TN removal efficiency was benefited from simultaneous nitrification and denitrification (SND) in the MBBR zone. Due to the SND phenomenon in the aerobic zone, the carbon source cost could be saved by 0.23 yuan/m3 on average, and the annual carbon source cost could be saved by 13.432 million yuan. Control of biofilm thickness and dissolved oxygen had an important effect on stable performance of SND. Highthroughput sequencing of microorganisms in the system showed that the relative abundances of nitrifying bacteria and denitrifying bacteria on the suspended carrier were 32.19% and 4.86%, respectively. The simultaneous presence of nitrifying bacteria and denitrifying bacteria made SND phenomenon possible to happen. When the temperature was low in winter, nearly 90% of the nitrification load of the system was actually consumed by the suspended carrier.
相似文献/References:
[1]朱点钰,陈年浩,朱津苇,等.填料类型对MBBR启动及运行效能的影响[J].中国给水排水,2018,34(21):1.
ZHU Dian yu,CHEN Nian hao,ZHU Jin wei,et al.Effect of Carrier Type on Startup and Operating Efficiency of Moving Bed Biofilm Reactor[J].China Water & Wastewater,2018,34(7):1.
[2]郑临奥,吴迪,张晶晶,等.城市污水泵站改为河道生态补给站的实践总结[J].中国给水排水,2018,34(20):82.
ZHENG Lin ao,WU Di,ZHANG Jing jing,et al.Practice of River Ecological Replenishment Retrofitting from an Urban Sewage Pumping Station[J].China Water & Wastewater,2018,34(7):82.
[3]田敏,崔涛,吕恺,等.西安市第四污水处理厂A2/O工艺的脱氮性能评价[J].中国给水排水,2020,36(13):1.
TIAN Min,CUI Tao,LU Kai,et al. Denitrification Performance Evaluation of A2/O Process in Xi’an Fourth Wastewater Treatment Plant [J].China Water & Wastewater,2020,36(7):1.
[4]吴彦成,顾鑫,朱继涛,等.铁氨氧化污水生物脱氮技术的研究进展[J].中国给水排水,2020,36(18):38.
WU Yan-cheng,GU Xin,ZHU Ji-tao,et al.Research Advances of Biological Nitrogen Removal from Wastewater via Fe(Ⅲ) Reduction Coupled to Anaerobic Ammonium Oxidation (Feammox) Process[J].China Water & Wastewater,2020,36(7):38.
[5]周家中,吴迪,郑临奥.纯膜MBBR工艺在国内外的工程应用[J].中国给水排水,2020,36(22):37.
ZHOU Jia-zhong,WU Di,ZHENG Lin-ao.Engineering Application of Pure MBBR Process at Home and Abroad[J].China Water & Wastewater,2020,36(7):37.
[6]黄子洪,向婷,方华,等.分步进水SBR工艺生物脱氮运行条件优化及数学模拟[J].中国给水排水,2020,36(23):89.
HUANG Zi-hong,XIANG Ting,FANG Hua,et al.Operational Condition Optimization and Mathematical Simulation of Biological Denitrification in Step-feed SBR Process[J].China Water & Wastewater,2020,36(7):89.
[7]王朝朝,张欢,闫立娜,等.高盐度冲击后厌氧氨氧化工艺恢复及运行特性[J].中国给水排水,2021,37(3):16.
WANG Zhao-zhao,ZHANG Huan,YAN Li-na,et al.Recovery and Operational Characteristics of Anammox Process after High Salinity Shock[J].China Water & Wastewater,2021,37(7):16.
[8]冯红利,赵梦月,丁舒喆.城市污水厂A2/O工艺生物脱氮过程优化控制[J].中国给水排水,2021,37(6):102.
FENG Hong-li,ZHAO Meng-yue,DING Shu-zhe.Optimal Control of Biological Nitrogen Removal in A2/O Process of WWTP[J].China Water & Wastewater,2021,37(7):102.
[9]杨平,周家中,管勇杰,等.基于MBBR的AAO和Bardenpho工艺改造效果对比[J].中国给水排水,2021,37(7):11.
YANG Ping,ZHOU Jia-zhong,GUAN Yong-jie,et al.Comparison of AAO and Bardenpho Processes Transformation Effect Based on MBBR[J].China Water & Wastewater,2021,37(7):11.
[10]孙庆花,张晓霞,赵益华,等.天津某高盐高排放标准污水厂提标改造工程设计[J].中国给水排水,2021,37(8):83.
SUN Qing-hua,ZHANG Xiao-xia,ZHAO Yi-hua,et al.Design of a Wastewater Treatment Plant Upgrading Project with High Salinity Influent and High Discharge Standard in Tianjin[J].China Water & Wastewater,2021,37(7):83.
[11]周小琳,樊星,毕学军,等.两段式A/O-MBBR工艺生物脱氮中试与系统优化[J].中国给水排水,2021,37(19):72.
ZHOU Xiao-lin,FAN Xing,BI Xue-jun,et al.Pilot-scale Test and System Optimization of Two-stage A/O-MBBR Process for Biological Nitrogen Removal[J].China Water & Wastewater,2021,37(7):72.