近年来，丝瓜视频污污污的利用越来越普遍。将含有有机质的废水、固体垃圾等经过厌氧处理后，不仅可以将垃圾减量化，而且能产生大量丝瓜视频污污污。在这个厌氧发酵的过程中，硫酸盐还原细菌的作用下，也产生大量硫化氢。由于硫化氢有毒、腐蚀性强，如何有效且经济地处理这些丝瓜视频污污污中的硫化氢，是衡量一个丝瓜视频污污污利用项目成功的重要因素。随着科技的发展、技术的更替，丝瓜视频污污污脱硫技术已发展到以生物脱硫为代表的第三代丝瓜视频污污污脱硫技术。其中生物脱硫又大体分为一体式生物脱硫和分离式生物脱硫两大类。

In recent years, the utilization of biogas has become increasingly common. After anaerobic treatment of wastewater and solid waste containing organic matter, not only can the waste be reduced, but also a large amount of biogas can be generated. In this anaerobic fermentation process, a large amount of hydrogen sulfide is also produced under the action of sulfate reducing bacteria. Due to the toxicity and strong corrosiveness of hydrogen sulfide, how to effectively and economically treat the hydrogen sulfide in these biogas is an important factor in measuring the success of a biogas utilization project. With the development and replacement of technology, biogas desulfurization technology has evolved to the third generation of biogas desulfurization technology represented by biological desulfurization. Biological desulfurization can be broadly divided into two categories: integrated biological desulfurization and separated biological desulfurization.

一体式生物脱硫是指：将一定量的空气导入含有硫化氢的丝瓜视频污污污中，混合气体通过生物滤池、生物滴滤池以去除硫化氢，脱硫副产物一般为硫酸或者硫酸盐，由于运行成本低，被广泛应用于丝瓜视频污污污脱硫发电项目中。

Integrated biological desulfurization refers to the process of introducing a certain amount of air into biogas containing hydrogen sulfide, and then passing the mixed gas through a biological filter or a biological drip filter to remove hydrogen sulfide. The by-products of desulfurization are generally sulfuric acid or sulfate, which are widely used in biogas desulfurization power generation projects due to their low operating costs.

分离式生物脱硫工艺是指：含硫化氢的丝瓜视频污污污气体首先进入生物洗涤塔，在塔内与混合液中碱反应，先从丝瓜视频污污污中脱除硫化氢，然后生物洗涤液进入生物反应器。将反应器中的硫化物转化为单质硫，同时碱液得到再生，重复使用。随着嗜盐脱硫菌的发现，分离式脱硫工艺得到长足发展。解决了一体式生物脱硫容易出现的硫填料易堵塞的问题。在丝瓜视频污污污提纯CNG的工艺中、以及高浓度硫化氢的丝瓜视频污污污处理工艺中，分离式脱硫工艺占有优势。

The separated biological desulfurization process refers to the process in which the biogas gas containing hydrogen sulfide first enters the biological washing tower, where it reacts with alkali in the mixed solution to remove hydrogen sulfide from the biogas, and then the biological washing solution enters the bioreactor. Convert sulfides in the reactor into elemental sulfur, while regenerating the alkaline solution for reuse. With the discovery of halophilic desulfurization bacteria, the separated desulfurization process has made significant progress. Solved the problem of easy blockage of sulfur fillers in integrated biological desulfurization. In the process of purifying CNG from biogas and the treatment process of high concentration hydrogen sulfide biogas, the separated desulfurization process has advantages.

丝瓜视频污污污生物脱硫过程可以用双膜理论来解释，大致可以分为溶解吸收---吸附---转化三个过程。

The process of biogas biological desulfurization can be explained by the dual membrane theory, which can be roughly divided into three processes: dissolution absorption adsorption conversion.

溶解吸收：丝瓜视频污污污中的硫化氢气体在气液界面上，由气相转移到液相。

Dissolution and absorption: Hydrogen sulfide gas in biogas is transferred from the gas phase to the liquid phase at the gas-liquid interface.

吸附：溶液中硫氢根离子被脱硫微生物吸附，从水中转移至微生物体内。

Adsorption: Hydrogen sulfide ions in the solution are adsorbed by desulfurization microorganisms and transferred from water to the microbial body.

转化：在脱硫微生物体内，硫氢根被转化成单质硫或硫酸根，作为吸收剂的碱液被再生，重新吸收硫化氢。

Conversion: In desulfurization microorganisms, sulfur ions are converted into elemental sulfur or sulfate ions, and the alkaline solution used as an absorbent is regenerated to reabsorb hydrogen sulfide.

在此过程中，有效控制一定的氧含量是脱硫细菌繁殖生存的必要条件，所以在这个生物脱硫工艺过程，对硫化氢（H2S）和氧气（O2）的连续监控是必要的。

Effective control of a certain oxygen content is a necessary condition for the reproduction and survival of desulfurization bacteria in this process. Therefore, continuous monitoring of hydrogen sulfide (H2S) and oxygen (O2) is necessary in this biological desulfurization process.

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