activated sludge

简明释义

活性污泥

英英释义

例句

1.Monitoring the health of the activated sludge is crucial for efficient treatment processes.

监测活性污泥的健康状况对高效的处理过程至关重要。

2.The wastewater treatment plant uses activated sludge to remove contaminants from the water.

污水处理厂使用活性污泥来去除水中的污染物。

3.During the aeration process, air is pumped into the tank to support the activated sludge microorganisms.

在曝气过程中，空气被泵入水箱以支持活性污泥微生物的生长。

4.The concentration of activated sludge in the reactor affects the overall treatment efficiency.

反应器中活性污泥的浓度影响整体处理效率。

5.Regularly testing the activated sludge helps in adjusting the treatment parameters.

定期测试活性污泥有助于调整处理参数。

作文

The process of wastewater treatment is crucial for maintaining the health of our environment. One of the most effective methods used in this process is the use of activated sludge. This term refers to a mixture of microorganisms, including bacteria and protozoa, that are cultivated in aerated water to break down organic matter. The activated sludge process is widely utilized in municipal and industrial wastewater treatment plants due to its efficiency and effectiveness in removing pollutants.In a typical activated sludge system, raw sewage is first screened to remove large debris. The remaining wastewater is then sent to an aeration tank where air is introduced to promote the growth of microorganisms. These microorganisms feed on the organic materials present in the wastewater, converting them into biomass and gases. The aeration process is vital as it ensures that the microorganisms remain active and can effectively decompose the organic matter. After a certain period of aeration, the mixture is transferred to a settling tank, also known as a clarifier. Here, the heavier activated sludge settles to the bottom, forming a thick sludge layer, while the treated effluent rises to the top and is discharged for further treatment or safe discharge into the environment. The settled sludge can be recycled back to the aeration tank to maintain the population of microorganisms, or it can be removed for further processing.The success of the activated sludge process largely depends on various factors such as temperature, pH, and the concentration of dissolved oxygen. Operators must carefully monitor these parameters to ensure optimal performance. Additionally, the balance between the microbial population and the organic load is essential; too much organic material can overwhelm the microorganisms, while too little can lead to their decline.One of the significant advantages of using activated sludge is its ability to adapt to varying loads of organic waste. This flexibility allows treatment plants to handle fluctuations in wastewater quality and quantity. Furthermore, the activated sludge process is capable of achieving high removal rates for biochemical oxygen demand (BOD) and total suspended solids (TSS), making it an effective solution for reducing pollution.However, there are challenges associated with the activated sludge process. For instance, the formation of excess sludge can lead to operational difficulties and increased costs for disposal. Additionally, if the microbial community is not well-balanced, issues such as foaming, bulking, or poor settling can occur, affecting the overall efficiency of the treatment process.In conclusion, the activated sludge process plays a vital role in modern wastewater treatment. Its ability to efficiently break down organic pollutants makes it an indispensable technology for protecting our water resources. As we continue to face environmental challenges, understanding and optimizing the activated sludge process will be essential for sustainable wastewater management. By investing in research and development, we can improve the performance of this technology and ensure cleaner water for future generations.

废水处理过程对维护我们环境的健康至关重要。这个过程中使用的最有效的方法之一是使用活性污泥。这个术语指的是一种微生物混合物，包括细菌和原生动物，这些微生物在充气水中培养，以分解有机物质。活性污泥过程因其高效和有效去除污染物而广泛用于市政和工业废水处理厂。在典型的活性污泥系统中，原污水首先经过筛分以去除大颗粒杂物。剩余的废水然后被送入充气池，在那里引入空气以促进微生物的生长。这些微生物以废水中存在的有机物为食，将其转化为生物质和气体。充气过程至关重要，因为它确保微生物保持活跃，并能有效分解有机物质。经过一定时间的充气后，混合物被转移到沉淀池，也称为澄清器。在这里，较重的活性污泥沉降到底部，形成厚厚的污泥层，而处理后的出水则上升到顶部并排放以进行进一步处理或安全排放到环境中。沉降的污泥可以回收回充气池，以维持微生物的种群，或者可以去除以进行进一步处理。活性污泥过程的成功在很大程度上取决于温度、pH值和溶解氧浓度等各种因素。操作员必须仔细监测这些参数，以确保最佳性能。此外，微生物种群与有机负荷之间的平衡也至关重要；有机物质过多可能会使微生物不堪重负，而过少则可能导致它们的衰退。使用活性污泥的一个显著优势是其适应不同有机废物负荷的能力。这种灵活性使处理厂能够处理废水质量和数量的波动。此外，活性污泥过程能够实现对生化需氧量（BOD）和总悬浮固体（TSS）的高去除率，使其成为减少污染的有效解决方案。然而，活性污泥过程也面临挑战。例如，过量污泥的形成可能导致操作困难和处置成本增加。此外，如果微生物群落不平衡，可能会出现泡沫、膨胀或沉降差等问题，从而影响处理过程的整体效率。总之，活性污泥过程在现代废水处理中发挥着至关重要的作用。其有效分解有机污染物的能力使其成为保护我们的水资源不可或缺的技术。随着我们继续面临环境挑战，理解和优化活性污泥过程将对可持续废水管理至关重要。通过投资于研究和开发，我们可以提高该技术的性能，确保未来几代人拥有更清洁的水。