摘要
针对臭氧耦合ASBR/SBR污泥减量化工艺,研究了臭氧氧化对硝化和反硝化能力的影响。结果表明,在臭氧投加量为0.074gO3/gSS左右的条件下,系统进水的COD平均值由氧化前的659mg/L增加到氧化后的713mg/L,碳源量提高了8.2%。进水氨氮由34.3mg/L增加到39.9mg/L,出水氨氮由1.7mg/L升高至1.9mg/L,硝化能力基本未受到影响。SBR段的出水NO3--N平均值由5.85mg/L下降为2.2mg/L,表明系统的反硝化能力增强。投加臭氧前后,系统进水TN平均值分别为49.1mg/L和52.9mg/L,出水TN平均值分别为10.9和13.4mg/L,对TN的平均去除率分别为77.7%和74.6%。可见,臭氧氧化未对SBR段的硝化和反硝化效果产生明显影响。
The influence of ozonation on nitrification and denitrifieation in the combined process of ozonation and ASBR/SBR for sludge reduction was investigated. When the ozone dosage is 0. 074 gO3/ gSS, the average influent COD is increased from 659 mg/L to 713 mg/L. The influent carbon source is increased by 8.2%. The influent ammonia nitrogen concentration is increased from 34.3 mg/L to 39.9 mg/L, and the effluent ammonia nitrogen concentration changes from 1.7 mg/L to 1.9 mg/L. The nitrifi- cation capability is scarcely altered by ozonation. The average effluent NO3 - N concentration of SBR is decreased from 5.85 mg/L to 2.2 rag/L, suggesting an improvement of denitrifieation capability. Before and after ozonation, the average influent TN concentrations are 49.1 mg/L and 52.9 mg/L, the average effluent TN concentrations are 10.9 mg/L and 13.4 mg/L, and the average removal rates of TN are 77.7% and 74.6%. It is concluded that nitrification and denitrifieation in the SBR are not significantly influenced by ozonation.
出处
《中国给水排水》
CAS
CSCD
北大核心
2010年第9期33-36,共4页
China Water & Wastewater
基金
中国环境科学研究院中央级公益性科研院所基本科研业务专项(2007KYYW10)
