基于物料平衡的光合细菌污水资源化碳排放研究

Carbon emission of photosynthetic bacteria wastewater bioconversion technology based on material balance algorithm

加速实现碳中和已成为全球共识,污水处理领域的碳排放情况和低碳技术的发展也逐渐被关注。光合细菌污水资源化技术是一种新兴的污水处理技术,可同时实现污水处理和资源回收,目前该技术的碳排放情况还没有被研究。基于光合细菌的处理过程和物料平衡原理,根据污水处理数据计算出CO_(2)的净产生量,并对该技术进行低碳程度评价。结果表明,光合细菌污水资源化技术单位COD去除量对应的CO_(2)净产生量(碳排放量/COD去除量)的值均在1.1以下,该值远低于其他污水处理技术。同时,该技术还会产生多种高价值物质如辅酶Q10等,可抵消一部分碳排放。因此,光合细菌污水资源化技术是一种适应碳中和目标的低碳污水处理技术。

Accelerating carbon neutralization has become a global consensus.The carbon emission and carbon re⁃duction technologies in the field of sewage treatment have also been gradually concerned.Photosynthetic bacteria bioconversion technology of wastewater is a new wastewater recycling technology.It is a new method that can realize wastewater treatment and resource recovery simultaneously.At present,the carbon emission of this technology has not been studied.Based on the biological treatment process of photosynthetic bacteria,this study calculated its net carbon emission and evaluated its low-carbon degree based on the sewage treatment data and the material balance.The results showed that the carbon emission/COD removal of photosynthetic bacteria bioconversion technology of wastewater was less than 1.1,which was far lower than other wastewater treatment technologies.At the same time,the technology could also produce a variety of high-value products such as coenzyme Q10,which would offset part of the carbon emissions.Therefore,photosynthetic bacteria bioconversion technology of wastewater is a wastewater re⁃cycling technology suitable for the goal of carbon neutralization.