佛山科学技术学院学报（自然科学版）2024，Vol.42Issue(4)：49-56,8.
基于STOAT污水厂AAO工艺不同回流比的模拟与优化
Simulation and optimization of different reflux ratio of AAO process in STOAT wastewater plant
摘要
Abstract
In this study,the STOAT software was utilized to simulate the performance of an anaerobic-anoxic-oxic(AAO)process in a wastewater treatment plant in northern China.The aim was to investigate the influence of different return ratios on the removal of total nitrogen,ammonia nitrogen,total phosphorus,chemical oxygen demand(COD),and suspended solids(SS),and to analyze the optimal return ratio.The results indicated that the STOAT software accurately and realistically simulated the AAO treatment process of the wastewater treatment plant.Through simulation analysis,it was observed that the return ratio had a relatively minor impact on COD and SS removal.The removal efficiency of total nitrogen increased synchronously with the increase in the return ratio,while the removal of total phosphorus was mainly influenced by the sludge return ratio.The optimal operating conditions were identified with a sludge return ratio of 80%and a mixed liquid return ratio of 400%,resulting in removal efficiencies of 79%for total nitrogen,98.02%for ammonia nitrogen,and 92.33%for total phosphorus.Both before and after optimization,there was a significant improvement in the removal efficiency of total nitrogen,ammonia nitrogen,and total phosphorus.This approach can serve as a technical reference for optimizing the operation of AAO processes in northern wastewater treatment plants.关键词
STOAT/AAO/脱氮除磷/最优回流比/工艺优化Key words
STOAT/AAO/nitrogen and phosphorus removal/optimal reflux ratio/process optimization分类
资源环境引用本文复制引用
刘乐乐,郭五珍,曾旭升,刘新泽,郜玉楠..基于STOAT污水厂AAO工艺不同回流比的模拟与优化[J].佛山科学技术学院学报（自然科学版）,2024,42(4):49-56,8.基金项目
广东省自然科学基金粤佛基金(2022A1515140184) （2022A1515140184）
浑河流域沈抚段河流水生态建设与功能修复技术集成与示范课题(2014ZX07202-011) （2014ZX07202-011）
