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1)  Nitrogen removal
除氮
1.
and Phragmites australis,have high nitrogen removal efficiencies,in which the Phragmites australis has the best performance.
以氮营养物为去除目标,研究了高盐再生水景观河道内的生态砾石床及4种水生植物湿地床的除氮效果。
2.
However, NH_4~+-N was removed by Cladophora and Spirogyra preferentially, followed by removal of NO3--N during nitrogen removal.
)、团集刚毛藻(Cladophora glomerata)为代表,研究了大型丝状绿藻去除氮磷污染物以及抑制微型藻类生物生长的性能与机制。
3.
The increasing pH value made ammonia evaporate during Spirogyra growth,which might be the main mechanism of nitrogen removal.
Spirogyra生长引起水的pH升高,使NH4+-N挥发可能是除氮的主要机制。
2)  remove of nitrogen and phosphorus
除磷除氮
3)  denitrification and phosphorus removal
脱氮除磷
1.
Test of membrane bioreactor for denitrification and phosphorus removal;
MBR的脱氮除磷工艺研究
2.
Research progress on technique of denitrification and phosphorus removal in membrane bioreactor
膜生物反应器脱氮除磷技术的研究进展
3.
The phosphorus release and uptake behavior of phosphorus accumulating organisms (PAOs) in “anoxic- anaerobic-aerobic” denitrification and phosphorus removal process (namely reversed AAO) with low carbon nutrients and high nitrate were explored using artificial wastewater and municipal wastewater.
采用人工配水和市政污水研究了“缺氧-厌氧-好氧”(倒置AAO)脱氮除磷工艺中,聚磷微生物(PAOs)在低碳源、高硝酸盐环境下的释磷和吸磷行为。
4)  removal of nitrogen and phosphorus
脱氮除磷
1.
Effect of cell concentration on the removal of nitrogen and phosphorus in synthetic wastewater by the immobilized algal-bacterial system;
固定化藻菌的小球浓度对模拟生活污水脱氮除磷效果的影响
2.
The hydraulic retention time and the ratio of whole aerobic zone on removal of nitrogen and phosphorus are investigated.
实验通过水力停留时间和上下区域体积比对脱氮除磷效果影响的研究,确定该工艺的最佳运行工况和反应器内挡板位置;同时与传统SBR工艺进行对比实验研究。
3.
The mechanisms of of the biological removal of nitrogen and phosphorus are explained.
在阐述城市污水生物脱氮除磷机理的基础上 ,分析生物脱氮除磷的 MSBR工艺、U CT工艺和 BCFS工艺。
5)  Phosphorus and nitrogen removal
脱氮除磷
1.
Effect of COD concentration on phosphorus and nitrogen removal in SBMBBR;
COD进水浓度对SBMBBR脱氮除磷效果影响
2.
The modified A~2/O(MAAO) process for phosphorus and nitrogen removal is improved from the traditional A~2/O technology.
介绍了一种新型的脱氮除磷工艺及其运行情况。
3.
The major achievements gained in the study of phosphorus and nitrogen removal by SBR were discussed as well.
介绍了序批式活性污泥法(Sequencing Batch Reactor,简称SBR)工艺的产生、发展和特点以及目前脱氮除磷研究的主要进展。
6)  COD and nitrogen removal
脱碳除氮
补充资料:催化还原法除氮氧化物
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CAS号:

性质:催化还原法可依还原剂是否与废气中的氧发生反应,分为非选择性催化还原法和选择性催化还原法。前者的还原剂是氢气、甲烷、一氧化碳及低碳氢化合物,还可利用含以上组分的混合气体(如合成氨弛放气、焦炉气、天然气、炼厂尾气和气化石脑油等)。在铂、钯催化剂的作用下,可将废气中的氮氧化物(NOx)催化还原为氮气。同时还原剂还可与废气中的氧作用,生成水蒸气和二氧化碳,反应过程放出大量的热。由于该法燃料耗量大,采用贵重金属为催化剂,需设置热回收装置,投资费用较大,而逐渐被淘汰。目前,大多采用选择性催化还原法,它以氨为还原剂,对含氮氧化物的气体进行催化还原处理,氨能有选择地与气体中的二氧化氮及一氧化氮反应,而极少与气体中的氧反应。催化剂可用贵金属,也可用其他金属(铜、铁、铬、锰等)。此法需要消耗一定量的氨,运转费用较高,经济上不够合理,而且处理尾气中氨的浓度达500~800mg/L,会造成二次污染。

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