气态膜脱氨法处理火电厂高浓氨氮废水的研究  

Experimental Study on Treatment of High Concentration Ammonia-nitrogen Wastewater from Thermal Power Plant by Gas-membrane Deamination

作　　者：徐浩然 叶青 冯向东 张雨婷 姚之侃 高强生 张林[4] Xu Haoran;Ye Qing;Feng Xiangdong;Zhang Yuting;Yao Zhikan;Gao Qiangsheng;Zhang Lin(Zhejiang Provincial Key Laboratory of Energy Efficiency and Pollution Control Technology for Thermal Power Generation in Zhejiang Province,Hangzhou 311121;Zhejiang Energy Group R&D Co.,Ltd.,Hangzhou 310003;Zhejiang Zheneng Shaoxing Binhai Thermal Power Company Limited,Shaoxing 312073;College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江省火力发电高效节能与污染物控制技术研究重点实验室,浙江杭州311121 [2]浙江浙能技术研究院有限公司,浙江杭州310003 [3]浙江浙能绍兴滨海热电有限责任公司,浙江绍兴312073 [4]浙江大学化学工程与生物工程学院,浙江杭州310027

出　　处：《广东化工》2021年第3期112-114,93,共4页Guangdong Chemical Industry

摘　　要：采用气态膜脱氨法对火电厂产生的高浓氨氮废水进行氨氮脱除处理,研究了初始水质条件和系统运行条件对氨氮脱除效率的影响,并考察了氨尾气的吸收效果,提出了氨尾气资源化回用途径。试验结果证明,利用气态膜脱氨中试系统能够高效将火电厂高浓氨氮废水的氨氮浓度由1000 mg/L以上下降至300 mg/L以下。增大进膜流量、提高真空度、增大膜表面积有利于NH3传质效率的提升,内压式脱氨膜组件和外压式脱氨膜组件均有较好脱氨效率。气态膜脱氨系统尾气以除盐水循环喷淋吸收的方式效果不够理想,应考虑酸性溶液作为氨尾气吸收剂或直接回用气态氨尾气。High concentration ammonia-nitrogen wastewater produced by thermal power plant was treated by gas-membrane deamination.The effects of initial water quality and system operation conditions on ammonia-nitrogen removal efficiency were studied.The absorption effect of ammonia tail gas was investigated,and the recycling ways of ammonia tail gas were proposed.The experimental results show that the gas-membrane deamination pilot system can effectively reduce ammonia-nitrogen of high concentration ammonia-nitrogen wastewater from more than 1000 mg/L to less than 300 mg/L.The mass-transfer efficiency of NH3 can be improved by increasing the inlet flow rate,vacuum degree and membrane surface area.Both internal pressure and external pressure deamination membrane modules have good deamination efficiency.The effect of tail gas absorption by desalting water circulation spray is not ideal,so acid solution should be considered as ammonia tail gas absorbent or recycle ammonia tail gas directly.

关 键 词：气态膜脱氨法 氨氮废水 中空纤维膜 传质效率 火电厂 

分 类 号：TQ028.8[化学工程]