基于短程硝化反硝化污水厂处理能效提升研究

Research on Treatment Efficiency Improvement of Wastewater Treatment Plant Based on Short-range Nitrification and Denitrification

摘要:

传统污水处理工艺能耗高、成本大等问题突出。短程硝化反硝化技术受到越来越多的关注。现剖析该技术在节省曝气量、降低污泥产量、节省碳源等方面的优势；探讨其应用边界，包括影响因素和运行控制条件。通过某污水厂工程实例，改造曝气系统调控溶解氧后，出水总氮明显下降，去除率提升15.95%，系统中约有71%的传统反硝化，29%的短程反硝化。同时指出该技术在保证硝化过程、自控难度、溶解氧数据准确性等方面的挑战。该技术在实际情况下具有应用潜力，但需克服挑战，以推动污水处理领域可持续发展。

Abstract:

Traditional sewage treatment processes are confronted with the prominent issues such as high energy consumption and high costs. The shot-range nitrification and denitrification technology has received more and more attention. The advantages of this technology in the aspects of saving aeration volume， decreasing sludge production and saving carbon sources are analyzed. Its application boundaries， including influencing factors and operation control conditions are discussed. Through an engineering case of a wastewater treatment plant （WWTP)， after the reconstruction of aeration system to regulate the dissolved oxygen， the total nitrogen in the effluent has been significantly decreased， and the removal rate is improved by 15.95%. There are about 71% conventional denitrification and 29% short-range denitrification in the system. Meanwhile， it is pointed out the challenges faced by this technology in the guarantee of nitrification process， the difficulty of automatic control and the accuracy of dissolved oxygen data. This technology has the application potential in practical situations， but needs to overcome these challenges to promote the sustainable development of the sewage treatment field.