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(19):72-77.
两段式A/O-MBBR工艺生物脱氮中试与系统优化
- Title:
- Pilot-scale Test and System Optimization of Two-stage A/O-MBBR Process for Biological Nitrogen Removal
- Keywords:
- two-stage A/O; moving bed biofilm reactor (MBBR); biological nitrogen removal (BNR); nitrification; denitrification
- 摘要:
- 针对城镇污水处理高标准脱氮的技术难题，构建了集高效生物脱氮与有机物去除为一体的两段式A/O-MBBR系统，开展以实际城镇污水为处理对象的中试研究。结果表明，在反应温度为(26.8±1.3) ℃、平均有机负荷［以溶解性COD（SCOD）计］和氨氮负荷分别为338.57和108.58 g/(m3·d)条件下，两段式A/O-MBBR系统出水SCOD、氨氮、总无机氮（TIN）浓度分别为(23.97±1.84)、(0.47±0.16)、(4.35±0.81) mg/L。通过两段式A/O-MBBR系统优化，可形成反应分区功能化生物膜，在原水碳源高效利用基础上，达到了城镇污水高效脱氮的目标。
- Abstract:
- A two-stage A/O-MBBR system integrating high-efficiency biological nitrogen removal and organic pollutants removal was constructed to solve the technical problem of high standard nitrogen removal in an urban sewage treatment, and the real urban sewage was treated in the pilot-scale test. When the reaction temperature was (26.8±1.3) ℃, the average organic load［calculated by dissolved COD (SCOD)］and ammonia nitrogen load were 338.57 g/(m3·d) and 108.58 g/(m3·d), respectively, the SCOD, ammonia nitrogen and total inorganic nitrogen in the effluent of the two-stage A/O-MBBR system were (23.97± 1.84) mg/L, (0.47± 0.16) mg/L and (4.35± 0.81) mg/L, respectively. The functional biofilm was formed in different areas by optimizing the two-stage A/O-MBBR system. The two-stage A/O-MBBR system achieved the goal of efficient nitrogen removal on the basis of the efficient utilization of the influent carbon source.
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