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voc废气处理设备厂家技术处理特点

来源:http://www.yinyehuanbao.com     发布时间:2021-02-01   浏览次数:

微生物净化法是近年来发展起来的分解VOC的一种方法,该技术已在德国、荷兰得到规模化应用,有机物去除率大都在90%以上。该方法净化VOC过程的实质是附着在滤料介质中的微生物,在适宜的环境条件下,利用VOC作为炭源和能源,维持其生命活动,并将有机物转化为简单的无机物(CO2、H2O)或细胞组成物质的过程。微生物净化法处理VOC一般要经历3个步骤:
Microbial purification is a method of VOC decomposition developed in recent years. This technology has been widely used in Germany and the Netherlands, and the removal rate of organic matter is more than 90%. The essence of the process of VOC purification is the process of using VOC as carbon source and energy source to maintain the life activities of microorganisms attached in filter media under suitable environmental conditions, and transforming organic matter into simple inorganic matter (CO2, H2O) or cell components. The treatment of VOC by microbial purification generally involves three steps
(1)VOC同水接触并溶解于水中(即由气膜扩散进入液膜);
(1) VOC contacts with water and dissolves in water;
(2)溶解于液膜中的VOC在浓度差的推动下进一步扩散到生物膜,进而被其中的微生物捕获并吸收;
(2) The VOC dissolved in the liquid membrane is further diffused to the biofilm under the promotion of concentration difference, and then captured and absorbed by the microorganisms in the biofilm;
VOC治理设备
(3)进入微生物体内的VOC在其自身的代谢过程中作为能源和营养物质被分解,经生物化学反应终转化成为无害的化合物。
(3) The VOC entering the microorganism is decomposed as energy and nutrients in its own metabolic process, and finally transformed into harmless compounds through biochemical reaction.
根据微生物在VOC处理过程中存在的形式,可将处理方法分为生物洗涤法(悬浮态)和生物过滤法(固着态)。生物洗涤法即微生物及其营养物配料存在于液相中,气相中的有机物通过与悬浮液接触后转移到液相,从而被微生物降解,其典型形式有鼓泡塔、喷淋塔及穿孔塔等生物洗涤塔。生物过滤法是微生物附着生长于固体介质(填料)表面,VOC通过由固体介质构成的固定塔层(填料层)时,被吸附、吸收,终被微生物降解。其典型的形式有土壤、堆肥、填料等材料构成的生物过滤塔。生物滴滤塔则同时有悬浮态和固着态的特性。
According to the existing forms of microorganisms in VOC treatment process, the treatment methods can be divided into biological washing method (suspended state) and biological filtration method (fixed state). Biological washing method means that microorganisms and their nutrient ingredients exist in the liquid phase, and the organic matter in the gas phase is transferred to the liquid phase after contacting with the suspension, which is degraded by microorganisms. Its typical forms include bubble tower, spray tower, perforated tower and other biological washing towers. Biofiltration is a process in which microorganisms attach to the surface of solid media (packing). VOC is absorbed and degraded by microorganisms when it passes through the fixed tower layer (packing layer) composed of solid media. The typical form of biofilter is composed of soil, compost, filler and other materials. The biotrickling filter has both suspended and fixed characteristics.
微生物净化法一般用于处理低浓度VOC。其主要优点是流程和设备较简单,一般不消耗有用原材料,运行能耗和费用较低、安全可靠、较少形成二次污染。但由于生化反应速率较低,使设备体积较大,且有压力损失,对温度和湿度变化敏感。
Microbial purification method is generally used to treat low concentration VOC. Its main advantages are simple process and equipment, no consumption of useful raw materials, low operation energy consumption and cost, safe and reliable, less secondary pollution. However, due to the low biochemical reaction rate, the volume of the equipment is large, and there is pressure loss, so it is sensitive to the changes of temperature and humidity.
随着工业的飞速发展和城市化进程的加快,公众对生活环境、工作环境质量的要求越来越高,VOC由于其高危害性也越来越受到重视,根据其物理和化学性质,选择不同方法来处理,不仅可以减轻环境污染,还会取得一定的经济效益。因此,VOC的回收与处理技术将日趋活跃,应用前景非常广阔。
With the rapid development of industry and the acceleration of urbanization, the public has higher and higher requirements for the quality of living environment and working environment. VOC has been paid more and more attention because of its high harmfulness. According to its physical and chemical properties, choosing different methods to deal with VOC can not only reduce environmental pollution, but also achieve certain economic benefits. Therefore, VOC recovery and treatment technology will become increasingly active, and the application prospect is very broad.

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