智能控制气升式SBBR污水处理装置的脱氮效能研究

Deniterification of the Intelligent Air Lifted SBBR Sewage Treatment Plant

根据污水同步硝化反硝化原理,在SBR反应器基础上进行改进,设计一体化智能控制气升式SBBR污水处理装置,并在反应器中投加自主研发的电气石陶粒,系统精准调控反应器内部环境参数,考察其对模拟生活污水的脱氮效能。结果表明,15 d系统反应器启动成功,出水COD为15.61 mg/L,氨氮质量浓度为3.9 mg/L,稳定运行期间采用传统厌氧(3 h)/好氧(7 h)/缺氧(1.5 h)工艺条件,COD、氨氮去除率分别达到93%、89%,出水水质完全满足城镇污水处理厂污染物排放标准(GB18918-2002)的一级A标准。典型周期内由于同步硝化反硝化作用,其出水氨氮、硝态氮、亚硝态氮质量浓度分别为3.21、1.38、0.577 mg/L,脱氮效能显著。该污水处理装置具有结构紧凑、操作方便、精准控制、节能低耗等优点,适用于小型污水处理及教学实验科研。

According to the principle ofsimultaneous nitrification wastewater, to design an integrated inteUigent air lifted type SBBR sewage treatment plant based on SBR reactor, and precise control of the reactor, internal environment parameters to study the denitrification efficiency with tourmaline ceramsite as carrier. Results show that the reactor is started successfully after 15 d, the effluent concentrations of COD, NH3-N were 15.61 mg/L and 3.9 mg/L respectively, during the stable operation, the traditional process conditions was set as anaerobic （3 h）/aerobic （7 h）/hypoxia （1.5 h）, the average removal rates COD and NH3-N was 93% and 89% respectively, which met the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918-2002）. Due to the synchronous nitrification and denitrfication, the effluent concentration were 3.21, 1.38 and 0.577 mg/L within a typical cycle, the nitrification efficiency significantly. The sewage treatment plant has advantages of compact structure, excellent performance, saving energy consumption, and suitable for small wastewater treatment and teaching experiment research.