焦点提醒： 再生水厂 CAST 工艺脱氮机能优化研究 苏雪莹 1，高永青 1，程秋音 2，曹婧 2，马文 2，阜崴 1，张树军 1，马淑勍 1， 孙丽欣 1 （1. 北京城市排水团体无限义务公司科技研发中间，北京 100044；2. 北京北排水情况成长 无限公司 吴家村再生水厂，北京 100071） 再生水厂 ����ϷappCAST 工艺脱氮机能优化研究 苏雪莹 1，高永青 1，程秋音 2，曹婧 2，马文 2，阜崴 1，张树军 1，马淑勍 1， 孙丽欣 1 （1. 北京城市排水团体无限义务公司科技研发中间，北京 100044；2. 北京北排水情况成长 无限公司 吴家村再生水厂，北京 100071） 摘要：本文连系某再生水厂轮回式活性污泥法（CAST）的运转近况，阐发了该工艺选择区的脱氮潜能。 经由过程调理曝气支管气量，切磋扩年夜缺氧区对 CAST 工艺脱氮机能的影响。成果发觉，扩年夜缺氧区有益在充 分操纵进水中的 COD 进行反硝化，出水 TN 不变低在 15mg/L。经由过程工艺优化，能够强化 CAST 工艺脱氮 机能，节流曝气能耗并削减碳源投加量。 要害词：CAST；缺氧区；脱氮；曝气 中图分类号：X703 文献标识码：AResearch On Optimization of Nitrogen Removal Performance of CAST Process in Water Reclamation Plant GAO Yong-qing1 , SU Xue-ying1 , CHENG Qiu-yin2 , CAO Jing2 , Ma Wen2 ,FU Wei1 , ZHANG Shu-jun1 , MA Shu-qing1 （1. Beijing Drainage Group Technology Research and Development Center, Beijing 100044, China; 2. Wujiacun Recycled Waterworks, Beijing Drainage Environment Development Company, Beijing 100071,China) Abstract: The nitrogen removal potential of selector was analyzed by combining the running status of Cyclic Activated Sludge Technology (CAST). The effect of expanding anoxic zone on nitrogen removal performance was discussed by adjusting aeration. The results showed that expansion of anoxic zone was beneficial to make use of influent COD to denitrify, and effluent TN was stable below 15mg/L. Process optimization can enhance nitrogen removal performance of CAST, save aeration energy consumption and reduce dosage of carbon source. Keywords: CAST; anoxic zone; nitrogen removal; aeration