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生物脫硫的工作原理

  生物脫硫,又稱為生物催化脫硫(Biocatalytic Desulfurizaton,簡稱BDS),是一種常溫常壓下利用脫硫細菌將硫化物轉(zhuǎn)化為單質(zhì)硫或硫酸鹽的脫硫方法。其工作原理主要基于微生物的代謝活動,以下是生物脫硫工作原理的詳細解釋:

  Biological desulfurization, also known as biocatalytic desulfurization (BDS), is a desulfurization method that uses desulfurization bacteria to convert sulfides into elemental sulfur or sulfate at room temperature and pressure. Its working principle is mainly based on the metabolic activity of microorganisms. The following is a detailed explanation of the working principle of biological desulfurization:

  一、基本原理

  1、 Basic principles

  生物脫硫的基本原理是H2S氣體被吸收液吸收轉(zhuǎn)化為硫化物,然后被脫硫細菌吸收至體內(nèi),作為營養(yǎng)物質(zhì)被脫硫細菌分解、氧化、利用。在脫硫的同時,為脫硫細菌的生長繁衍提供能量。

  The basic principle of biological desulfurization is that H2S gas is absorbed and converted into sulfides by the absorption solution, and then absorbed into the body by desulfurization bacteria as nutrients, which are decomposed, oxidized, and utilized by desulfurization bacteria. At the same time as desulfurization, it provides energy for the growth and reproduction of desulfurization bacteria.

  二、過程階段

  2、 Process Stage

  生物脫硫的過程主要分為三個階段:

  The process of biological desulfurization is mainly divided into three stages:

  H2S氣體的吸收過程:硫化氫氣體由氣相轉(zhuǎn)移至液相,被吸收液(通常是弱堿液)吸收,轉(zhuǎn)變?yōu)榱蚧铩?/p>

  The absorption process of H2S gas: Hydrogen sulfide gas is transferred from the gas phase to the liquid phase, absorbed by the absorbing liquid (usually a weak alkaline solution), and transformed into sulfides.

  硫化物的吸附吸收過程:溶解至水溶液中的硫化物被脫硫細菌吸附、吸收,從水溶液中轉(zhuǎn)移至脫硫細菌的體內(nèi)。

  The adsorption and absorption process of sulfides: Sulfides dissolved in aqueous solution are adsorbed and absorbed by desulfurization bacteria, and transferred from the aqueous solution to the bodies of desulfurization bacteria.

  生物氧化的過程:進入脫硫細菌體內(nèi)的硫化物被用作能源或養(yǎng)分,在細菌體內(nèi)酶的作用下氧化分解和利用,從而達到去除H2S的目的。氧化產(chǎn)物可以是單質(zhì)硫或硫酸鹽,具體取決于脫硫細菌的種類和反應條件。

  The process of biological oxidation: Sulfides entering the desulfurization bacteria are used as energy or nutrients, and are oxidized, decomposed, and utilized by enzymes in the bacteria to achieve the goal of removing H2S. The oxidation product can be elemental sulfur or sulfate, depending on the type of desulfurization bacteria and reaction conditions.20211108044951783

  三、脫硫細菌的作用

  3、 The role of desulfurization bacteria

  脫硫細菌在生物脫硫過程中起著關鍵作用。它們能夠選擇性地吸收、轉(zhuǎn)化硫化物,并將其作為能源和養(yǎng)分進行利用。常見的脫硫細菌包括硫桿菌屬、絲硫菌屬等。這些細菌在生物反應器中生長繁殖,形成生物膜或生物絮體,提高脫硫效率。

  Desulfurizing bacteria play a crucial role in the biological desulfurization process. They can selectively absorb and transform sulfides, and utilize them as energy and nutrients. Common desulfurization bacteria include the genera Thiobacillus and Fusobacteria. These bacteria grow and reproduce in the bioreactor, forming biofilms or biofilms to improve desulfurization efficiency.

  四、技術(shù)類型與特點

  4、 Technical types and characteristics

  生物脫硫技術(shù)包括生物過濾法、生物吸附法和生物滴濾法等。這些技術(shù)均屬于開放系統(tǒng),其微生物種群隨環(huán)境改變而變化。生物脫硫法具有條件溫和、硫化氫去除比例高、不需催化劑和氧化劑(空氣除外)、不需處理化學污泥、產(chǎn)生污染少、能耗低、效率高、可以回收硫等優(yōu)點。但同時,其過程控制難度大,條件要求苛刻。

  Biological desulfurization technology includes biological filtration, biological adsorption, and biological drip filtration. These technologies all belong to open systems, and their microbial populations change with environmental changes. The biological desulfurization method has the advantages of mild conditions, high hydrogen sulfide removal ratio, no need for catalysts and oxidants (except for air), no need to treat chemical sludge, low pollution generation, low energy consumption, high efficiency, and the ability to recover sulfur. However, at the same time, its process control is difficult and the conditions are demanding.

  五、應用實例

  5、 Application examples

  生物脫硫技術(shù)在多個領域得到了廣泛應用。例如,在沼氣處理中,沼氣中的H2S被氧化成單質(zhì)硫去除,提高了沼氣的質(zhì)量和利用價值。此外,生物脫硫技術(shù)還應用于石油煉制、煤化工、天然氣處理等領域,用于脫除含硫化合物,減少環(huán)境污染。

  Biological desulfurization technology has been widely applied in multiple fields. For example, in biogas treatment, H2S in biogas is oxidized to elemental sulfur for removal, improving the quality and utilization value of biogas. In addition, biological desulfurization technology is also applied in fields such as petroleum refining, coal chemical industry, and natural gas processing to remove sulfur-containing compounds and reduce environmental pollution.

  綜上所述,生物脫硫是一種高效、環(huán)保的脫硫方法,其工作原理基于脫硫細菌的代謝活動。通過優(yōu)化反應條件、選擇合適的脫硫細菌和技術(shù)類型,可以進一步提高生物脫硫的效率和穩(wěn)定性。

  In summary, biological desulfurization is an efficient and environmentally friendly desulfurization method, and its working principle is based on the metabolic activity of desulfurization bacteria. By optimizing reaction conditions, selecting appropriate desulfurization bacteria and technology types, the efficiency and stability of biological desulfurization can be further improved.

  本文由 生物脫硫 友情奉獻.更多有關的知識請點擊 http://www.ydjdys.com    真誠的態(tài)度.為您提供為全面的服務.更多有關的知識我們將會陸續(xù)向大家奉獻.敬請期待.

  This article is contributed by the friendship of biological desulfurization For more related knowledge, please click http://www.ydjdys.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.

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