“吃掉”硫化物的微生物

　　Microorganisms capable of "eating" sulfides

　　当下，业界含硫烟气净化方法近百种，常用技术分为湿法脱硫和干法脱硫，但这两种脱硫工艺均存在能耗高、处理费用贵、废水和污泥处置难等问题。为解决这些问题，科研工作者们竞相研发能耗低、效率高、绿色环保的新型脱硫技术。

　　At present, there are nearly a hundred methods for purifying sulfur-containing flue gas in the industry, and commonly used technologies are wet desulfurization and dry desulfurization. However, both desulfurization processes have problems such as high energy consumption, expensive treatment costs, and difficult disposal of wastewater and sludge. To solve these problems, researchers are competing to develop new desulfurization technologies with low energy consumption, high efficiency, and green environmental protection.

　　生物脱硫技术像是请了一群微生物“清洁工”，它们悄无声息地潜入烟气中，将那些不受欢迎的硫化合物“请出”，整个过程温和而高效。举例：就好比家里的鱼缸水脏后，并不是直接倒掉换水，而是放入一些能够分解杂质的鱼儿或水草。

　　Biological desulfurization technology is like hiring a group of microbial "cleaners" who silently infiltrate into the flue gas, "removing" unwanted sulfur compounds. The entire process is gentle and efficient. For example, it's like when the water in a fish tank at home gets dirty, instead of directly pouring it out and changing the water, some fish or aquatic plants that can decompose impurities are added.

　　培养出来硫酸盐还原菌系列、硫氧化细菌系列等一批拥有自主知识产权的高活性、高耐受性的特种微生物菌株。

　　Cultivate a series of highly active and tolerant special microbial strains with independent intellectual property rights, such as sulfate reducing bacteria series and sulfur oxidizing bacteria series.

　　生物滴滤塔中碱液将烟气中二氧化硫吸收并转化为硫酸根和亚硫酸根后，正是通过硫酸盐还原菌，将硫酸根和亚硫酸根还原成硫离子。随后，硫氧化菌把硫离子转化为生物硫黄，进而实现烟气中硫的资源化利用。

　　The alkaline solution in the biological drip filtration tower absorbs and converts sulfur dioxide in the flue gas into sulfate and sulfite ions, which are then reduced to sulfur ions by sulfate reducing bacteria. Subsequently, sulfur oxidizing bacteria convert sulfur ions into biological sulfur, thereby achieving the resource utilization of sulfur in flue gas.

　　“尾气焚烧炉烟气经生物脱硫后，二氧化硫浓度从6500毫克/标准立方米降至小于10毫克/标准立方米，二氧化硫去除率达到99.8%。”

　　After biological desulfurization, the sulfur dioxide concentration in the flue gas from the tail gas incinerator decreased from 6500 milligrams per standard cubic meter to less than 10 milligrams per standard cubic meter, and the sulfur dioxide removal rate reached 99.8%

　　通过微生物的还原和氧化作用，不仅实现了硫化物的高效转化和单质硫的回收，还解决了原络合铁脱硫系统硫黄堵塞问题。这种设计减少了占地面积，简化了操作流程，降低了运营成本，提高了生物脱硫效率。

　　Through the reduction and oxidation of microorganisms, not only has efficient conversion of sulfides and recovery of elemental sulfur been achieved, but also the problem of sulfur blockage in the original chelated iron desulfurization system has been solved. This design reduces the footprint, simplifies the operation process, lowers operating costs, and improves the efficiency of biological desulfurization.

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