CAJ | 학술논문

为了实现序批式生物反应器（SBR）的自动控制，利用SBR工艺厌氧-好氧-缺氧（AOA）的运行方式处理模拟废水，考察溶解氧（DO）、pH值及氧化还原电位（ORP）作为各反应阶段终止（包括厌氧释磷、好氧硝化、曝气、好氧吸磷和缺氧反硝化）控制参数的可行性。结果表明：厌氧段，pH值与ORP曲线下降至平台的转折点对应厌氧释磷的终点；好氧段，pH值曲线的最低点对应硝化作用的终点，pH值、DO与ORP在硝化结束后均上升至一个稳定的平台，三者结合来判断曝气时间的结束以及好氧吸磷的终点；缺氧段，ORP曲线的最低点对应反硝化作用的终点。DO，pH值与ORP的特征点可以作为SBR工艺脱氮除磷的过程控制参数。
위료실현서비식생물반응기（SBR）적자동공제，이용SBR공예염양-호양-결양（AOA）적운행방식처리모의폐수，고찰용해양（DO）、pH치급양화환원전위（ORP）작위각반응계단종지（포괄염양석린、호양초화、폭기、호양흡린화결양반초화）공제삼수적가행성。결과표명：염양단，pH치여ORP곡선하강지평태적전절점대응염양석린적종점；호양단，pH치곡선적최저점대응초화작용적종점，pH치、DO여ORP재초화결속후균상승지일개은정적평태，삼자결합래판단폭기시간적결속이급호양흡린적종점；결양단，ORP곡선적최저점대응반초화작용적종점。DO，pH치여ORP적특정점가이작위SBR공예탈담제린적과정공제삼수。
In order to realize automatic control of sequencing batch reactor(SBR), the feasibility of employing dissolved oxygen(DO), pH value and oxidation reduction potential(ORP) as the controlling parameters for the termination of different reaction stages, which included phosphorus release under anaerobic condition, nitrification under aerobic condition, aeration and phosphorus uptake under aerobic condition and denitrification under anoxic conditions, were investigated by treating synthetic wastewater in an anaerobic/aerobic/anoxic (AOA) SBR. The results showed that the turning point of pH value andORP profiles was corresponding to the termination of phosphorus release in anaerobic stage. The lowest point of pH profile was corresponding to the termination of nitrification in aerobic andDO, pH value andORP increased to stable levels after nitrification. The combination ofDO, pH value andORP could be used to estimate the termination of aeration time and phosphorus uptake in aerobic stage. The lowest point ofORP profile was corresponding to the termination of denitrification in anoxic. The characteristic points ofDO, pH value andORP could be used as the process control parameters for the nitrogen and phosphorus removal in SBR.