The automotive painting industry is a source of environmental pollution caused by Volatile Organic Compounds (VOCs) present in the discharged ventilation air. To contribute to the mitigation of this type of air pollution, Ekoinwentyka Ltd. developed – from pilot scale to full scale – and adapted the technology of Compact Trickle Bed Bioreactor (CTBB) whose operating principle builds upon co-current downflow of the gas phase (polluted air) and liquid phase (solution of mineral salts) through a packed bed where active microorganisms are immobilized in the biofilm on the surfaces of packing elements. Pilot-scale bioreactor 0.32 m in diameter and 1.50 m total height had its packed bed inoculated with a consortium of microorganisms dominated by Pseudomonas fluorescens bacteria. During the experimental programme that lasted several months, the flow rate of air drawn from the ventilation system of the painting shop was changing between 1.0 and 10.0 m³/h and the inlet concentration of VOCs ranged from 10 to 200 ppm. By measuring VOC concentration in the purified air, the factor of VOC biodegradation was found to range between 85 and 99%. Based on pilot-scale experiments, full-scale CTBB has been developed 2.8 m in diameter and 10 m total height and installed as an add-on component of the ventilation system of the painting shop. Test operation at gas flow rates up to 6000 m³/h, confirmed VOC biodegradation factor at the level of 85–99% thus proving a positive result of CTBB technology adaptation to the conditions of the automotive painting industry.

汽车喷漆行业是排放的通风空气中存在的挥发性有机化合物（VOC）造成的环境污染源。为了减轻这种空气污染的影响，Ekoinwentyka Ltd.从中试规模发展到全面规模，并采用了紧凑滴流床生物反应器（CTBB）的技术，该技术的工作原理是基于气相顺流向下（被污染的空气）和液相（无机盐溶液）通过填充床，其中活性微生物被固定在填充元件表面的生物膜中。直径为0.32 m，总高度为1.50 m的中试规模生物反应器的填充床接种了以荧光假单胞菌为主的微生物群细菌。在历时几个月的实验程序中，从喷漆车间通风系统抽出的空气流量在1.0和10.0 m ³ / h之间变化，VOC的入口浓度在10至200 ppm之间。通过测量净化空气中的VOC浓度，发现VOC生物降解因子在85％至99％之间。基于中试规模的实验，已开发出直径2.8 m，总高度10 m的全尺寸CTBB，并将其作为喷漆车间通风系统的附加组件进行安装。在高达6000 m ³ / h的气体流量下进行测试操作，证实了VOC的生物降解系数在85–99％的水平，因此证明了CTBB技术适应汽车涂装行业条件的积极结果。