【摘要】 利用生物紊动床在低溶解氧 (DO)和有机物存在的条件下研究了氨氮的亚硝化、硝化和有机物氧化的规律 ,分析了异养菌与自养菌竞争的特点。试验结果表明 ,DO为 2～ 3mg/L、有机物浓度 (TOC)为 2 0 0mg/L、C/N =1∶1.5时对硝化作用影响不大 ;DO为 0 .5～ 1mg/L、TOC≥ 10 0mg/L、C/N =1∶3时硝化系统即受到破坏。更多还原

【Abstract】 Study was made on nitrification and organic matter oxidation under the condition of low DO and existence of organics in biological turbulent bed reactor, and analysis was conducted on the competition between heterotrophic and autotrophic bacteria. The test results show that under the conditions of DO = 2～3 mg/L, TOC = 200 mg/L, and C/N = 1∶1.5, there is less impact on nitrification; However, nitrification system is destroyed with DO = 0.5～1 mg/L, TOC ≥100 mg/L and C/N =1∶3.更多还原