南方某污水处理厂提标改造工艺运行优化
- Title:
- Process Optimization of a Municipal WWTP in South China after Upgrading
- Keywords:
-
WWTP
; upgrading; nitrogen and phosphorus removal; process optimization; sludge nitrification rate; accurate chemicals addition; fall re oxygenation
- 摘要:
-
南方某污水处理厂提标改造后，排放标准从一级B提高至一级A标准和广东省地标两者之严者。总氮、氨氮、总磷的排放值分别比原标准降低了25%、37.5%、50%，而该厂提标后的主体工艺仍然为改良 AAO氧化沟，这对污水处理厂的运行管理提出很大挑战。通过污泥硝化速率分析，总氮、总磷成分检测，精确加药,跌水复氧分析及改造等措施优化工艺运行后，运行效率明显提升，在确保水质稳定达标的同时，节约了生产成本，对同类污水处理厂的工艺优化改造具有一定的参考意义。
- Abstract:
-
The discharge standard of a wastewater treatment plant after upgrading was raised from the national first level B to level A and the local standard of Guangdong Province. The new discharge limits on total nitrogen, ammonia nitrogen and total phosphorus, were 25%, 37.5% and 50% lower than those of the original standard. The main process was still AAO oxidation ditch after upgrading, which posed a great challenge to the operation and management. The process operation was optimized by analysis of sludge nitrification rate, total nitrogen and total phosphorus composition, accurate chemicals addition, fall re oxygenation, and etc.
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