标题:
改良ICEAS工艺提高污水厂脱氮效率的方法研究Ways of Improved ICEAS Process to Improve the Efficiency of Nitrogen Removal in the Wastewater Treatment Plant
作者:
王竞, 王淑莹, 孙燕, 陆胤旭, 彭永臻
关键字:
ICEAS工艺, 低碳氮比, 实际生活污水, 总氮去除率, 间歇进水Intermittent Cyclic Extended Aeration System (ICEAS), Low COD/TN, Actual Domestic Wastewater, Total Nitrogen Removal Rate, Intermittent Influent
期刊名称:
《Water pollution and treatment》, Vol.4 No.2, 2016-04-20
摘要:
为进一步提高ICEAS工艺污水处理厂的总氮去除率，本文研究了如何通过对ICEAS工艺的改良提高其脱氮效率，并最终应用于城镇污水处理厂ICEAS工艺高效脱氮升级改造。研究结果表明，连续进水方式限制了总氮去除率的提高，将连续进水方式变为间歇进水方式，系统的脱氮效率明显提高。运行模式为搅拌56 min、曝气112 min、沉淀50 min，滗水70 min，运行周期为4.8 h时，可明显提高总氮的去除率。
In order to improve the total nitrogen removal rate, this paper studied the ways to improve the nitrogen removal efficiency through the improvement of ICEAS process, which was finally applied to the urban wastewater treatment plant. The results showed that the traditional ICEAS process limits the improvement of total nitrogen removal rate, and the step-feed ICEAS process always has a higher TN removal efficiency than the traditional ICEAS process. Operation mode consisted of 56 min agitation, 112 min aeration, 50 min precipitation, and 70 min decanting; when operation cycle was 4.8 h, the removal rate of total nitrogen could be significantly improved.