Abstract：
Environmental pollution is a growing concern, particularly the impact of sewage treatment gas on the atmosphere\'s greenhouse effect. Efficient sewage resource recycling is crucial to achieving carbon neutrality. The bacteria-algae symbiotic sewage treatment system combines wastewater treatment, carbon dioxide fixation, and biomass energy recovery to achieve the goal of carbon neutrality, environmental protection, and the transformation of high-value added products. This paper presents the construction of a sequencing batch photobiological reaction system that utilizes a microbial-algae symbiotic relationship. The system was used to analyze the degradation effects of sCOD, TN, AN, and TP in anaerobic digestion wastewater by varying the microbial-algae ratios. Additionally, changes in the microbial community were analyzed to explore the system\'s potential for reducing carbon emissions. The study\'s findings indicate that: 1)When the ratio of bacteria to algae was 2:3, the removal rates of TN, AN, sCOD, and TP were 81.38%, 94.28%, 75.33%, and 96.56%. 2)Changing the ratio of bacteria to algae would affect the bacterial concentration in the mixed system, but not the bacterial community structure. The results indicate that a ratio of 2:3 enhances the removal of pollutants by bacteria and algae symbionts.3) Under the context of carbon neutralization, this paper investigates the reduction of carbon emissions in ADE treated by bacteria-algae symbiosis at the optimal bacteria to algae ratio. The experimental process can reduce 177.03 mg CO2 compared to complete nutrient consumption treatment, which is equivalent to a reduction of 355.08 g CO2 per 1 m3 of ADE. For full anaerobic treatment, this experimental process can reduce 228.35 mg of CO2 equivalent CH4, which translates to a reduction of 456.71 g of CO2 equivalent CH4 per 1 m3 of ADE.
摘要：
环境污染日益受到关注,特别是污水处理气体对大气温室效应的影响。有效的污水资源回收对实现碳中和至关重要。细菌-藻类共生污水处理系统结合了污水处理，二氧化碳固定，和生物质能回收，以实现碳中和的目标，环境保护,和高附加值产品的转化。本文介绍了利用微生物-藻类共生关系的序批光生物反应系统的构建。该系统用于分析sCOD的降解效果,TN,AN,通过改变微生物-藻类比例，在厌氧消化废水中的TP。此外,分析了微生物群落的变化，以探索该系统减少碳排放的潜力。研究结果表明:1)当细菌与藻类的比例为2:3时,TN的去除率,AN,sCOD,TP为81.38%，94.28%,75.33%,和96.56%。2）改变细菌与藻类的比例会影响混合体系中的细菌浓度，但不是细菌群落结构。结果表明，2：3的比例增强了细菌和藻类共生体对污染物的去除。3）在碳中和的背景下，本文研究了在最佳细菌与藻类比例下，通过细菌-藻类共生处理的ADE中碳排放的减少。该实验过程与完全营养消耗处理相比可减少177.03mgCO2，相当于每1m3ADE减少355.08gCO2。对于完全厌氧处理，该实验过程可以减少228.35mgCO2当量CH4，这相当于每1m3ADE减少456.71gCO2当量CH4。
