A2O工艺处理焦化废水异常工况的调整实践
Adjustment practical for abnormal condition of coking wastewater treatment via A2O process
吴建华1
作者信息
- 1. 山东钢铁集团有限公司研究院,山东 济南 271104
- 折叠
摘要
针对某焦化厂废水处理生化段运行过程中出现的活性污泥的活性被来水中的硫化物抑制,导致好氧池出口氨氮质量浓度上升至 30 mg/L左右的异常工况,通过调整系统运行负荷、投加市政污泥、控制来水pH值、调整回流比和水处理量等运行参数,使系统恢复正常运行.在处理量 60 m3/h、来水氨氮质量浓度 80 mg/L～100 mg/L、稀释水投加量≤10 m3/h、系统水温 32℃～37℃的工况下,好氧池出口水样氨氮含量为 0、亚硝酸盐氮质量浓度平均值为 0.058 mg/L、pH值在 7.0～7.5、碱度在 250 mg/L～350 mg/L.
Abstract
In view of the abnormal condition that the activated sludge was inhibited by the sulfide in the incoming water during the operation of the biochemical section of the wastewater treatment of a coking plant,resulting in the mass concentration of ammonia nitrogen at the outlet of the aerobic tank rising to about 30 mg/L,the system was restored to its normal operation by adjusting the operating load,adding municipal sludge,controlling the pH value of the incoming water,and adjusting the reflux ratio,water treatment capacity and other operating parameters.Under the working conditions of 60 m3/h treatment volume,80 mg/L-100 mg/L mass concentration of ammonia nitrogen in the incoming water,the additive amount of diluted water≤10 m3/h,and the water temperature of the system at 32℃-37℃,the ammonia nitrogen content of the water sample at the outlet of the aerobic tank was 0,and the average mass concentration of nitrite nitrogen was 0.058 mg/L,pH was 7.0-7.5,and alkalinity was 250 mg/L-350 mg/L.
关键词
焦化废水处理/A2O工艺/硫化物/硝化/反硝化Key words
coking wastewater treatment/A2O process/sulfide/nitrification/denitrification引用本文复制引用
出版年
2024
NETL
NSTL
万方数据