denitrification

简明释义

英[diːˌnaɪtrɪfɪˈkeɪʃn]美[diːˌnaɪtrɪfɪˈkeɪʃn]

n. 脱氮；[化学] 反硝化作用

英英释义

单词用法

同义词

反义词

例句

1.SBR process was used in studying the phenomenon of aerobic denitrification during the denitrification of wastewater.

采用SBR工艺，对废水脱氮中的好氧反硝化现象进行了研究。

2.The application of simultaneous nitrification and denitrification is predicted and the future studying direction is put forward.

对同时硝化反硝化的应用前景进行了展望，提出了今后的研究方向。

3.Biologic denitrification is one of the most popular methods to remove nitrite and nitrate from water.

生物反硝化法是解决水体中硝氮污染问题的主要方法之一。

4.Develop the system of selective catalytic reduction fume denitrification.

选择性催化还原烟气脱硝系统开发。

5.Study was made on the efficiency and mechanism of shortcut nitrification-denitrification in aerated biofilter.

通过小试研究了曝气生物滤池实现短程硝化反硝化的效能和机理。

6.The new biological denitrification techniques have gradually attracted the attention of people because of their obvious advantages.

生物脱氮新工艺由于其独特的优点日益引起人们的关注。

7.A complete aerobic denitrification function can take place when there are enough degradable organic carbon sources.

当存在足够的易降解有机碳源时，能发生完全的好氧反硝化作用。

8.The process of denitrification is crucial for maintaining soil health by converting nitrates into nitrogen gas.

通过将硝酸盐转化为氮气，脱氮作用对于维持土壤健康至关重要。

9.Understanding the factors affecting denitrification can help in managing agricultural runoff effectively.

了解影响脱氮作用的因素可以有效管理农业径流。

10.In wastewater treatment, denitrification helps reduce nitrogen levels, preventing water pollution.

在废水处理过程中，脱氮作用有助于降低氮含量，防止水污染。

11.Farmers often implement denitrification practices to enhance crop yields by improving nitrogen availability.

农民通常实施脱氮作用的措施，以通过改善氮的可用性来提高作物产量。

12.Microbial activity plays a key role in denitrification, as certain bacteria convert nitrate into nitrogen gas.

微生物活动在脱氮作用中起着关键作用，因为某些细菌将硝酸盐转化为氮气。

作文

Denitrification is a crucial ecological process that plays a significant role in the nitrogen cycle. It refers to the conversion of nitrates (NO3-) and nitrites (NO2-) into nitrogen gas (N2) or, to a lesser extent, into nitrous oxide (N2O). This process is primarily carried out by specific bacteria in anaerobic conditions, where oxygen is limited. Understanding denitrification (反硝化) is essential for recognizing its impact on soil health, water quality, and climate change.In agricultural systems, excessive use of fertilizers can lead to high levels of nitrates in the soil. When it rains, these nitrates can leach into groundwater or run off into nearby rivers and lakes, causing a range of environmental issues, including algal blooms and eutrophication. These phenomena deplete oxygen from water bodies, harming aquatic life. However, through denitrification (反硝化), nitrates can be converted back into nitrogen gas, which is harmless and returns to the atmosphere. This natural process helps mitigate the negative impacts of nitrogen runoff and maintains the balance of nitrogen in ecosystems.Moreover, denitrification (反硝化) is also vital in managing greenhouse gas emissions. Nitrous oxide, a byproduct of denitrification (反硝化), is a potent greenhouse gas, with a global warming potential much higher than carbon dioxide. While denitrification (反硝化) helps reduce nitrate levels in the environment, it is essential to manage it carefully to minimize nitrous oxide emissions. Practices such as optimizing fertilizer application and improving soil management can enhance the efficiency of denitrification (反硝化) while reducing the release of this harmful gas.The significance of denitrification (反硝化) extends beyond agriculture. In natural ecosystems, wetlands are known to be hotspots for denitrification (反硝化) due to their anaerobic conditions and rich organic matter. These ecosystems act as natural filters, improving water quality by removing excess nutrients before they enter larger water bodies. Therefore, preserving wetlands is crucial for enhancing denitrification (反硝化) processes and supporting biodiversity.In conclusion, denitrification (反硝化) is an essential process within the nitrogen cycle that helps regulate nitrogen levels in the environment. By converting nitrates back into nitrogen gas, it plays a critical role in preventing water pollution and mitigating climate change. Understanding and promoting denitrification (反硝化) can lead to more sustainable agricultural practices and better management of natural ecosystems. As we face increasing environmental challenges, recognizing the importance of denitrification (反硝化) will be vital in our efforts to create a healthier planet.

反硝化是一个关键的生态过程，在氮循环中发挥着重要作用。它指的是将硝酸盐（NO3-）和亚硝酸盐（NO2-）转化为氮气（N2）或在较小程度上转化为一氧化二氮（N2O）。这个过程主要由特定的细菌在缺氧条件下进行，氧气有限。理解反硝化（denitrification）对于认识其对土壤健康、水质和气候变化的影响至关重要。在农业系统中，过量使用肥料会导致土壤中硝酸盐水平升高。当下雨时，这些硝酸盐可能渗入地下水或流入附近的河流和湖泊，造成一系列环境问题，包括藻类繁殖和富营养化。这些现象耗尽水体中的氧气，危害水生生物。然而，通过反硝化（denitrification），硝酸盐可以转化回氮气，这种气体是无害的，并返回大气。这一自然过程有助于减轻氮流失的负面影响，并维持生态系统中氮的平衡。此外，反硝化（denitrification）在管理温室气体排放方面也至关重要。一氧化二氮是反硝化（denitrification）的副产品，是一种强效的温室气体，其全球变暖潜力远高于二氧化碳。虽然反硝化（denitrification）有助于降低环境中的硝酸盐水平，但必须小心管理，以尽量减少一氧化二氮的排放。优化施肥和改善土壤管理等做法可以提高反硝化（denitrification）的效率，同时减少这种有害气体的释放。反硝化（denitrification）的重要性超越了农业。在自然生态系统中，湿地因其缺氧条件和丰富的有机物而被认为是反硝化（denitrification）的热点。这些生态系统充当自然过滤器，通过在进入更大水体之前去除多余的营养物质来改善水质。因此，保护湿地对于增强反硝化（denitrification）过程和支持生物多样性至关重要。总之，反硝化（denitrification）是氮循环中的一个重要过程，有助于调节环境中的氮水平。通过将硝酸盐转化回氮气，它在防止水污染和缓解气候变化方面发挥着关键作用。理解和促进反硝化（denitrification）可以导致更可持续的农业实践和更好的自然生态系统管理。随着我们面临日益严峻的环境挑战，认识到反硝化（denitrification）的重要性对于我们创造一个更健康的星球的努力至关重要。