CAJ | 학술논문

针对现有污泥减量技术对氮、磷去除率低的问题,开发了一个具有同步脱氮除磷和污泥减量功能的HA-A/A-MCO工艺.采用该工艺处理校园生活污水,当进水COD为316～407mg/L时,出水COD≤18 mg/L,对COD的平均去除率为96%;将相当于进水量2%的厌氧释磷污泥回流至水解酸化池与原水-并进行水解处理后,大部分污泥转化为溶解性有机物,且主要是VFA(约275 mg/L),为原水中VFA(58 mg/L)的4.74倍,这为后续A~2/O单元进行脱氮除磷提供了充足的碳源.通过考察各反应池出水的三维荧光特性还发现,HA-A/A-MCO系统的各工段对原水中的溶解性有机质(DOM)具有显著的降解作用.
침대현유오니감량기술대담、린거제솔저적문제,개발료일개구유동보탈담제린화오니감량공능적HA-A/A-MCO공예.채용해공예처리교완생활오수,당진수COD위316～407mg/L시,출수COD≤18 mg/L,대COD적평균거제솔위96%;장상당우진수량2%적염양석린오니회류지수해산화지여원수-병진행수해처리후,대부분오니전화위용해성유궤물,차주요시VFA(약275 mg/L),위원수중VFA(58 mg/L)적4.74배,저위후속A~2/O단원진행탈담제린제공료충족적탄원.통과고찰각반응지출수적삼유형광특성환발현,HA-A/A-MCO계통적각공단대원수중적용해성유궤질(DOM)구유현저적강해작용.
Due to low removal efficiency of phosphorus and nitrogen by the existing sludge reduction technologies, an advanced process combining sludge reduction and phosphorus and nitrogen removal was developed. It is the hydrolysis acidification-anaerobic/anoxic-multistep continuous oxic (HA-A/A-MCO) process. The results of treating campus wastewater show that when the influent COD is 316 to 407 mg/L, the effluent COD is equal to or less than 18 mg/L, and its removal rate is 96%. When the return ratio of anaerobic P-release sludge entering into the hydrolysis acidification tank is about 2% of the influent flow, most of anaerobic P-release sludge is translated into dissolved organic matters, and they mainly contain VFA (about 275 mg/L), being 4.74 times as much as that (58 mg/L) in the raw sewage,which can provide rich carbon source for phosphorus and nitrogen removal in subsequent A~2/O unit. Through investigating three-dimensional excitation emission matrix fluorescence characteristics of each tank effluent, it is found that each tank of HA-A/A-MCO system has significant degradation effect of the dissolved organic matters in the raw sewage.