CAJ | 학술논문

以合成废水为研究对象,以丙酸盐为单一外加碳源,通过比较进水中不同Zn2+浓度(0,1,5,10,20mg/L)下单级好氧模式下序批式反应器(SBR)的除磷效果,考察进水 Zn2+浓度对单级好氧 SBR 生物除磷性能的影响,并通过分析各反应器中典型周期内磷及微生物体内储能物质的变化,探究Zn2+对单级好氧SBR生物除磷性能的影响机理.当进水Zn2+浓度为0和1mg/L时,除磷率分别高达96.84%和97.90%.当进水Zn2+浓度为5,10,20mg/L时,系统除磷率分别为89.32%,76.43%和57.29%,说明较高浓度Zn2+对单级好氧SBR生物除磷有抑制作用.结果表明,较高浓度Zn2+可抑制COD的降解,微生物体内聚羟基脂肪酸酯好氧合成及磷酸盐激酶活性,并促进GAOs的代谢,使聚磷合成和水解量减少,从而降低系统的除磷性能.
이합성폐수위연구대상,이병산염위단일외가탄원,통과비교진수중불동Zn2+농도(0,1,5,10,20mg/L)하단급호양모식하서비식반응기(SBR)적제린효과,고찰진수 Zn2+농도대단급호양 SBR 생물제린성능적영향,병통과분석각반응기중전형주기내린급미생물체내저능물질적변화,탐구Zn2+대단급호양SBR생물제린성능적영향궤리.당진수Zn2+농도위0화1mg/L시,제린솔분별고체96.84%화97.90%.당진수Zn2+농도위5,10,20mg/L시,계통제린솔분별위89.32%,76.43%화57.29%,설명교고농도Zn2+대단급호양SBR생물제린유억제작용.결과표명,교고농도Zn2+가억제COD적강해,미생물체내취간기지방산지호양합성급린산염격매활성,병촉진GAOs적대사,사취린합성화수해량감소,종이강저계통적제린성능.
Effect of Zn2+(0, 1, 5, 10 and 20mg/L) on phosphorus removal in single-stage oxic sequencing batch reactor (SBR) was investigated, the cyclic variations of phosphorus and intracellular polymers were analyzed, and the influencing mechanism of Zn2+on phosphorus removal induced by the single-stage oxic regime was explored. The experimental results showed that 96.54%and 97.48%of the influent phosphorus could be removed in the reactors fed with 0and 1mg/L Zn2+. However, the phosphorus removal efficiency decreased to 89.20%, 76.43%, 57.29%respectively in the reactors fed with 5, 10and 20mg/L Zn2+, suggesting that a higher concentration of Zn2+inhibited the phosphorus removal induced by the single-stage oxic regime. It was demonstrated that the effect of Zn2+on phosphorus removal was due to the inhibition to the degradation of COD, synthesis and hydrolysis of polyhydroxyalkanoates and the activity of polyphosphate kinase. Moreover, the metabolic shift from polyphosphate accumulating organisms to glycogen accumulating organisms at high Zn2+concentrations of could also decrease the phosphorus removal ability of the system.