[1]张娆,徐晓晨,王叶鑫,等.硫自养反硝化深度处理污水厂生化出水中的NO3--N[J].中国给水排水,2022,38(15):21-28.
　ZHANGRao,XUXiao-chen,WANG Ye-xin,et al.Sulfur Autotrophic Denitrification for Advanced Treatment of NO3--N in Effluent from Biochemical Treatment Process of Wastewater Treatment Plant[J].China Water & Wastewater,2022,38(15):21-28.
点击复制

硫自养反硝化深度处理污水厂生化出水中的NO3--N

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第15期 页码: 21-28 栏目: 出版日期: 2022-08-01
Title:
Sulfur Autotrophic Denitrification for Advanced Treatment of NO3--N in Effluent from Biochemical Treatment Process of Wastewater Treatment Plant
作者:
张娆1,2， 徐晓晨2， 王叶鑫3， 陈捷2， 杨凤林2
（1.核工业二四〇研究所，辽宁 沈阳 110032；2.大连理工大学环境学院 工业生态与环境工程教育部重点实验室，辽宁 大连 116024；3.中化环境科技工程有限公司，辽宁 沈阳 110032）
Author(s):
ZHANG　Rao1，2， XU　Xiao-chen2， WANG Ye-xin3， CHEN　Jie2， YANG　Feng-lin2
（1. Research Institute of No. 240， CNNC， Shenyang 110032， China； 2. Key Laboratory of Industrial Ecology and Environmental Engineering ， School of Environmental Science and Technology， Dalian University of Technology， Dalian 116024， China； 3. Sinochem Environment Technology Engineering Co. Ltd.， Shenyang 110032， China）
关键词:
污水厂生化出水;  硝态氮（NO3--N）;  硫自养反硝化;  生物滤池;  水温
Keywords:
effluent from biochemical treatment process of WWTP;  nitrate nitrogen (NO3--N);  sulfur autotrophic denitrification;  biofilter;  water temperature
摘要:
针对呼和浩特市某污水处理厂A2O工艺出水中残余的NO3--N，利用生物滤池进行单质硫自养反硝化中试研究。结果表明，单质硫自养反硝化工艺启动周期短（15 d）、去除NO3--N能力强，NO3--N去除负荷（以N计）基本可保持在200 g/（m3·d）以上。在启动过程中，Thiobacillus逐渐成为优势菌属，硫自养反硝化反应成为了生物滤池的主要代谢路径。此外，水温对该工艺性能有一定影响，当水温<15 ℃时生物滤池内的微生物群落结构会受到一定影响，平均NO3--N去除负荷迅速降至122.7 g/（m3·d），即使延长水力停留时间，系统亦无法恢复至最佳状态。
Abstract:
A pilot scale test of elemental sulfur autotrophic denitrification in the biofilter was carried out to remove the residual NO3--N in the effluent from A2O process of a wastewater treatment plant (WWTP) in Hohhot. Elemental sulfur autotrophic denitrification process had a short start?up period (15 days) and a strong NO3--N removal capacity. The NO3--N removal load (calculated by nitrogen) could remain above 200 g/(m3·d). During the start?up process, Thiobacillus gradually became the dominant bacterium, and sulfur autotrophic denitrification became the main metabolic pathway of the biofilter. In addition, water temperature had a certain impact on the performance of the process. When the water temperature was less than 15 ℃, the microbial community composition in the biofilter was affected to a certain extent, and the average NO3--N removal load decreased rapidly to 122.7 g/(m3·d). Even if the hydraulic retention time was extended, the system could not recover to the optimal state.
更新日期/Last Update: 2022-08-01