基于热带芽孢杆菌生物强化的NMP废水反硝化处理技术研究

Research on the Denitrification Treatment Technology for NMP Wastewater Based on Biological Strengthening with Bacillus tropicus

摘要: 随着新能源产业的快速发展，N-甲基吡咯烷酮(NMP)作为新能源生产中的关键溶剂，其产量及相应的废水排放量显著增加。本文提出了一种创新的生物强化处理技术，旨在对NMP废水作为城市污水处理厂的反硝化碳源进行强化以加快处理速率和处理深度，以实现废水中硝酸盐、亚硝酸盐氮的高效去除，并降低污水处理成本。本文通过生物强化方法，在普通反硝化污泥中加入少量针对NMP作为反硝化碳源体系中降解氮的纯菌，实现硝酸盐、亚硝酸盐氮的高效去除。同时，本技术采用循环往复的工艺，将反硝化过程中释放的NH₃通过硝化/反硝化进一步去除，解决了现有技术未涉及的问题。

Abstract: With the rapid growth of the new energy industry, N-methylpyrrolidone (NMP), a crucial solvent in new energy production, has seen a significant surge in its production and corresponding wastewater discharge. This paper introduces an innovative bioaugmentation treatment technology, specifically designed to enhance the use of NMP wastewater as a denitrification carbon source in urban sewage treatment plants. This is achieved by accelerating the treatment rate and depth, efficiently removing nitrate and nitrite nitrogen from wastewater, and reducing sewage treatment costs. Through a biological augmentation approach, this study introduces a small quantity of pure bacteria targeted at nitrogen degradation within the NMP denitrification carbon source system into regular denitrifying sludge, thereby achieving efficient removal of nitrate and nitrite nitrogen. Additionally, this technology employs a cyclic process that further removes NH3 released during denitrification through a combination of nitrification and denitrification, addressing issues not previously addressed by existing technologies.