1)Waste nitrogen污氮
2)nitrogen pollution氮污染
1.Analysis on the characteristics of the nitrogen pollution in Weihe River;渭河河水氮污染特征分析
2.Reason and prevention measures of nitrogen pollution in groundwater at Yinchuan Area;银川地区地下水氮污染原因及防治
3.Analysis on the influence factors of the nitrogen pollution in shallow groundwater;浅层地下水氮污染的影响因素分析——以松嫩盆地松花江北部高平原为例
英文短句/例句
1.And also it refers the prevention and treatment technology of nitrogen in groundwater.同时,要提高三氮污染的野外监测水平和三氮污染的治理技术研究。
2.Study on Conditions and Mechanism for Nitrogen Removal of Ammonia Wastewater by Immobilized Denitrying Bacteria脱氮细菌混合去除水相氮污染的条件与机理
3.Study on Characteristics of Nitrogen Pollution of Shallow Lakes at Plain River Network Area;平原河网区浅水湖泊氮污染特征研究
4.Study on the Rule of Sagittaria Sagittifolia Linn. Wipping Off the Pollutant of Phosphorus and Nitrogen;慈姑对磷、氮污染物的去除规律研究
5.Behaviors and Controls of Nitrogen Pollution in a Mountainous Reservoir;山区水库氮污染行为与控制技术研究
6.Summarization on the Remediation Technologies of Nitrate Contaminated Groundwater地下水中硝酸盐氮污染修复技术综述
7.Study on Removal Efficiency of Nitrogen Pollutants in Subsurface Flow Constructed Wetland;潜流型人工湿地对氮污染物的去除效果研究
8.Nitrogen Pollution Research about Sediment Internal Loading in Shanzi Reservoir as the Second Drinking Water Source for Fuzhou City;福州第二水源山仔水库底泥营养盐——氮污染研究
9.The key pollution indicators are ammonia nitrogen and BOD.主要污染指标是氨氮和生化需氧量。
10.Distribution Characteristics of Nitrogen and Phosphorus Pollution in the Surface Water Source of Shijiazhuang City石家庄市地表水源氮、磷污染分布特征
11.Controlling atmosphere pollution by NOx control technique利用氮氧化物控制技术治理大气污染
12.Study on the Characteristic of Nitrogen and Phosphorus Pollution of Urban Lakes in Guangdong Province;广东省城市湖泊氮、磷污染特征研究
13.Nitrogen and Phosphor Pollution Control Investigation of Surface Water Source in Shijiazhuang;石家庄市地表水源氮、磷污染控制研究
14.Studies on the Method of Eluviationing and Controlling Nitrogenous Fertilizer Pollution;氮素化肥淋溶污染与控制方法的研究
15.Impact Study of Agricultural Non-Point Source of Nitrogen and Phosphorus to Water Environment;农业非点源氮磷污染对水环境的影响
16.Study on nitrogen removal effect by electrolysis to slightly polluted wastewater电化学法处理高氮微污染水技术研究
17.Characteristics of the PAHs in Typical Chemical Venues in Guangzhou某氮肥厂场地土壤PAHs污染特征研究
18.EXPERIMENT ON AMMONIA REMOVAL IN LIGHTLY POLLUTED WATER BY ELECTROCHEMICAL PROCESS电化学法用于微污染水脱氮处理实验
相关短句/例句
nitrogen pollution氮污染
1.Analysis on the characteristics of the nitrogen pollution in Weihe River;渭河河水氮污染特征分析
2.Reason and prevention measures of nitrogen pollution in groundwater at Yinchuan Area;银川地区地下水氮污染原因及防治
3.Analysis on the influence factors of the nitrogen pollution in shallow groundwater;浅层地下水氮污染的影响因素分析——以松嫩盆地松花江北部高平原为例
3)Nitrogen pollution氮素污染
1.Animal husbandry exerted very important effects on meat product supply,people\'s life improvement and farmer\'s income increase,but the nitrogen of livestock manure polluted the environment,so it was important to strengthen the research about nitrogen pollution and environmental cost of livestock manure.畜禽养殖在保障肉食供应、改善居民生活、增加农民收入等方面发挥着重要作用,但是畜禽粪便中的氮素也给环境造成严重污染,加强畜禽粪便氮素污染及其环境成本研究有重要意义。
4)denitrifying sludge脱氮污泥
1.It's a effective and valid method to cultivate and enrich denitrifying sludge,by adopting the stage by stage rising method.采用进水浓度逐步上升方法驯化脱氮污泥,获得的活性污泥脱氮性能良好,氨氮去除率达到90%以上,TN去除率最高达到59。
5)Denitrification of wastewater污水脱氮
6)nitrogen-phosphorus wastewater氮磷污水
1.Comparative research on protein production capacity and freeze resistance capability of duckweed in nitrogen-phosphorus wastewater purification;浮萍净化氮磷污水的蛋白质生产能力及耐寒能力比较研究
延伸阅读
氮污染分子式：CAS号：性质：由氮的化合物引起的环境污染。大气中主要是氮气和氮氧化物，后者是直接或间接引起大气环境污染的主要污染物，二氧化氮有强刺激性、其毒性比二氧化硫大；它们主要由工业与生活燃烧化石燃料产生。大气中有烯烃等气体有机物(如汽车排气中含有不少)和氮氧化物并存时，经日光照射，发生光化学反应会造成光化学烟雾污染。大气中的二氧化氮与雨水作用会生成硝酸或硝酸盐，形成酸雨，或以硝酸盐颗粒物的形态沉降到土壤或水体，引起酸化。氮氧化物(主要为NOx和N2O)进入高层大气会对臭氧层的破坏起催化促进作用，进而会引起全球气候变化等环境污染效应和生态环境改变。水体中的氮主要来自生物体的代谢和腐败以及工业废水、生活污水的排放、氮肥的流失等。污水中的氮有4种形态，即有机氮、氨氮、亚硝酸氮(少量)和硝酸盐氮(硝化过程的最终产物)，典型污水中总氮含量约为40～50mg/L。水体中有过量氮会造成富营养化，使水质恶化，影响水生生物的生长与繁殖。土壤中的固氮菌和植物的根瘤菌、蓝藻等会将空气中的单质氮转化为化合态氮(如氨、硝酸盐)，供植物作养分，但过量氨或铵盐的存在，会使土壤的土质变坏，反有害于植物生长。此外，土壤中的硝酸盐可经反硝化作用生成一氧化二氮，进入平流层大气中，会与臭氧发生化学反应而耗损臭氧层中的臭氧；因此土壤也是产生破坏臭氧层的痕量气体的重要发生源之一。
