风-光互补驱动农村污水生物-物理耦合多级处理系统开发

目前，清洁能源应用于污水处理领域最大的挑战是易受天气状况影响导致电能无法稳定输出，负载无法连续正常工作。因此，为保证电能的稳定输出和设施正常运行，采用风-光互补蓄电池供能模式，通过对不同季节太阳能和风能强度变化监测与分析，确定太阳能与风能具有季节互补性。在此基础上，设计了风-光互补驱动农村污水生物-物理耦合多级处理设施的集成系统，采用生物和物理技术的耦合实现高效稳定去除污水中的污染物。202 d连续运行实验结果表明：通过系统的效能分析，证明风能对于太阳能发电的补充，有效地提高了供电系统的稳定性，实现发电系统电能输出稳定，且能源利用率可达90%以上；系统对污水中COD、NH₄⁺-N、TN、TP和SS的去除率分别为86.73%±2.89%、87.82%±6.59%、75.63%±11.79%、78.65%±6.39%、94.59%±0.89%；出水满足《内蒙古自治区农村生活污水处理设施污染物排放标准 (试行) 》 (DBHJ/001-2020) 一级标准。研究结果证明利用风-光能互补驱动生物物理耦合处理农村生活污水可行。

Wind-solar complementation drives the development of bio-physical coupling multi-stage treatment system for rural sewage

At present, the biggest challenge in the application of clean energy in the field of sewage treatment is that it is susceptible to weather conditions, resulting in unstable output of electric energy and continuous normal operation of the load. Therefore, in order to ensure the stable output of electric energy and the normal operation of facilities, the wind-solar hybrid battery energy supply mode was adopted, and the seasonal complementarity of solar and wind energy was determined by monitoring and analyzing the changes of solar and wind energy intensity in different seasons. On this basis, an integrated system of wind-solar complementary driving bio-physical coupling multi-stage treatment facilities for rural sewage was designed, and the coupling of biological and physical technology was used to achieve efficient and stable removal of pollutants in sewage. The results of 202 days of continuous operation showed that through the efficiency analysis of the system, it was proved that wind energy can supplement solar power generation, effectively improve the stability of the power supply system, realize the stable power output of the power generation system, and the energy utilization rate can reach more than 90%. The removal rates of COD, NH4 +-N, TN, TP and SS in sewage were 86.73%±2.89%, 87.82%±6.59%, 75.63%±11.79%, 78.65%±6.39%, 94.59%±0.89%, respectively. The effluent met the first-level standard of the Inner Mongolia Autonomous Region Pollutant Discharge Standard for Rural Domestic Sewage Treatment Facilities (Trial) (DBHJ/001-2020). The results proved that it was feasible to use wind-solar energy complementarity to drive biophysical coupling to treat rural domestic sewage.