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PDF下载[1]郭莉芳,朱宇峰,滕良方,等.MBBR用在南边某污水厂强化脱氮结果阐发[J].中国给水排水,2020,36(07):101-107.点击复制MBBR用在南边某污水厂强化脱氮结果阐发中国给水排水[ISSN:1000-4062/CN:12-1073/TU]卷:36期数:2020年07期页码:101-107栏目:出书日期:2020-04-01- Title:
- Analysis of Denitrification Efficiency of a Wastewater Treatment Plant in South China Enhanced by MBBR
- 作者:
- 郭莉芳1,朱宇峰2,滕良方1,周家中3,吴迪3,殷建文3
- 要害词:
- 挪动床生物膜反映器;生物脱氮;同步硝化反硝化;悬浮载体
- Keywords:
- MBBR;biological denitrification;simultaneous nitrification and denitrification;suspended carrier
- 摘要:
- 浙江某污水厂设想范围为16×104m3/d，采取Bardenpho—MBBR工艺进行进级革新后，生化池出水COD、NH4+- N、TN、TP均值别离为17.2、0.37、7.72、0.168 mg/L，在不投加碳源的环境下便可到达准Ⅳ类水尺度，生物脱氮除磷结果杰出。对生化池各功能区沿程采样测定发觉，好氧MBBR区对TN的去除率为28%~46%，遭到泥浆水冲击后也能连结在15%~22%，系统高效去除TN得益在好氧MBBR区的同步硝化反硝化（SND）感化；因为好氧区的SND现象，平都可以节流0.23元/m3的碳源费用，年节俭碳源费用近1 343.2万元；生物膜厚度和消融氧的节制对不变表示SND有主要影响；系统中微生物的高通量测序成果显示，悬浮载体上硝化菌品貌为32.19%、反硝化菌品貌为4.86%，硝化菌和反硝化菌同时具有为SND现象的发生供给了微不雅包管；冬季低温时，悬浮载体现实承当了系统近90%的硝化负荷。
- Abstract:
- The design scale of a wastewater treatment plant (WWTP) in Zhejiang Province was 16×104m3/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/m3on 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.
类似文献/References:
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