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生物脱氮 - Open Access .click
Results 31 to 34 of about 838 (34)

改良型A/O生物膜法处理印染废水的应用研究

open access: yesGongye shui chuli, 2015
通过对常规A/O脱氮工艺的泥水回流方式和污泥培养方式进行改变, 并增设特殊填料后, 得到兼具同步脱氮除碳功能以及生物膜特点的改良型A/O生物膜工艺, 并以预处理后的实际印染废水为对象考察了工艺的脱氮除碳等性能。结果表明:改良型A/O生物膜工艺能有效改善传统A/O脱氮工艺的缺陷, 出水可达到《太湖地区城镇污水处理厂及重点工业行业主要水污染物排放限值》(DB 32/1072—2007)的排放指标。
温猛   +4 more
doaj   +2 more sources

硫化物在新型生物脱氮工艺中的作用研究进展

open access: yesGongye shui chuli
硫化物是环境中常见的电子供体,也是废水生物处理过程中一些关键微生物的强抑制剂。综述了硫化物在短程硝化反硝化、厌氧氨氧化、混合营养型反硝化等新型生物脱氮工艺中作为抑制剂对脱氮性能的抑制机理和抑制作用,以及其作为电子供体在新型生物脱氮工艺及基于硫化物驱动的自养反硝化耦合工艺和相关组合工艺中所起到的作用,列举了以硫化物为基础的废水反硝化处理新工艺在实际工程中的应用,说明了其较传统工艺在减少污泥产量和能源需求方面具有的显著优势,最后对硫化物用于脱氮的研究方向进行展望 ...
陈涛, 沈耀良
doaj   +2 more sources

氨氧化微生物的生理代谢机制及在水处理系统中的分布研究进展

open access: yesGongye shui chuli
硝化过程和反硝化过程在水处理系统的生物脱氮中发挥着重要作用,其中硝化过程中的氨氧化是脱氮的限速步骤,其能够将低价态的氨氮转化为高价态的亚硝酸盐氮或硝酸盐氮,对氮的去除起着关键作用。综述了氨氧化古菌(AOA)、氨氧化细菌(AOB)以及近年来新发现的完全氨氧化菌(Comammox)这3类氨氧化微生物的研究进展,包括其系统发育、反应动力学、代谢路径、产N2O机理和来源识别及其在水处理生物脱氮系统中的分布,并对其在生物脱氮工艺中的应用及未来的研究方向进行了探讨和展望,提出未来应针对AOA、AOB ...
耿宏, 任峻明, 周文明, 孟晗
doaj  

碳氮比对生物脱氮技术效能的调控机制与研究进展

open access: yesGongye shui chuli
生物脱氮技术是含氮废水处理的主流技术,碳氮比(C/N)作为核心环境调控参数,直接决定脱氮系统的运行稳定性与脱氮效能。实际废水的C/N特征差异显著,不同脱氮工艺对C/N的响应规律与调控逻辑存在本质区别。基于废水C/N分类特征,系统梳理了低C/N(C/N<3)、中C/N(C/N 3~10)及高C/N(C/N>10)废水的来源分布与水质特性,综述了各类废水适宜的生物脱氮工艺选择策略。剖析了传统硝化-反硝化、异养硝化-好氧反硝化(HN-AD)、厌氧氨氧化(Anammox)及耦合工艺在不同C ...
杨景瑞, 李小林, 吕永康
doaj  

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