石洞口污水处理厂除臭提标改造的思路与实践

Ideas and Practice of Deodorization Upgrading Project for Shanghai Shidongkou Municipal Wastewater Treatment Plant

石洞口污水厂污水处理规模为40×10^4m^3/d,原有除臭设施排放标准为厂界二级,不满足上海市最新地方标准。在除臭提标改造工程中,一方面对可利用原有除臭设施进行改造,按照新的风量情况重新分配其服务范围;另一方面,对未加盖臭气源进行加盖密闭,并增设新的除臭设施。对大跨度的一体化生物反应池创新采用可移动式盖板加盖,化解了传统加盖工程与运行管理不便之间的矛盾。密闭空间臭气通过风管收集后采用生物滤池+活性炭吸附组合工艺进行处理,处理后经30 m高的排气筒高空达标排放。提标改造工程实施后,排气筒及厂界均达到上海市最新地方标准排放要求,提升了污水厂周边的环境质量。

The treatment capacity of Shidongkou wastewater treatment plant was 40 × 10^4 m^3/d,and the discharge standard of the original deodorization facility was the second class of the factory boundary,which could not meet the latest local standards in Shanghai. In the project of deodorization and standard upgrading,on the one hand,the original deodorization facility could be reformed and the service range could be redistributed according to the new air volume;on the other hand,the uncovered odor source should be closed and new deodorization facilities should be added. The integrated biological reaction tank was covered with moveable cover plate to avoid the conflict between traditional model of cover plate and the operation. The odor collected through pipes were treated by biofilter + activated carbon adsorption,and discharged by 30-meter-high exhaust funnel. Deodorant effect was significant through this project. The odor concentration of discharge outlet and reference point for air pollutants at enterprise boundary could meet the latest emission standards of Shanghai, and the quality of the surroundings have been elevated.