CAJ | 학술논문

活性污泥工艺是一种具有重要应用前景的工业化生产聚羟基烷酸酯(PHA)的方法.当前 PHA 测量主要采用离线分析方法,时间滞后、分析操作复杂,不适于 PHA 生产过程控制.本研究基于活性污泥同时储存生长-溶解性微生物产物模型(SSAG-SMP),认为在饱食(外部有机碳基质充足)期间,聚羟基烷酸酯(PHA)的合成速率与氧利用速率(OUR)及氢离子产生速率(HPR)呈线性关系,建立了一种基于 OUR-HPR 在线测量数据估计活性污泥合成 PHA 量的方法.本研究对乙酸作基质的不同浓度情况进行模拟,结果表明 OUR 及 HPR 的 PHA 合成的氧气消耗分数(kPHA,OUR )和质子消耗分数(kPHA,HPR )为常数,分别是0.67和0.57.利用建立的线性关系来预测饱食期 PHA 含量,结果显示预测值与实测值较为吻合,说明提出的基于 OUR-HPR 测量在线估计 PHA 合成量的方法可行.
활성오니공예시일충구유중요응용전경적공업화생산취간기완산지(PHA)적방법.당전 PHA 측량주요채용리선분석방법,시간체후、분석조작복잡,불괄우 PHA 생산과정공제.본연구기우활성오니동시저존생장-용해성미생물산물모형(SSAG-SMP),인위재포식(외부유궤탄기질충족)기간,취간기완산지(PHA)적합성속솔여양이용속솔(OUR)급경리자산생속솔(HPR)정선성관계,건립료일충기우 OUR-HPR 재선측량수거고계활성오니합성 PHA 량적방법.본연구대을산작기질적불동농도정황진행모의,결과표명 OUR 급 HPR 적 PHA 합성적양기소모분수(kPHA,OUR )화질자소모분수(kPHA,HPR )위상수,분별시0.67화0.57.이용건립적선성관계래예측포식기 PHA 함량,결과현시예측치여실측치교위문합,설명제출적기우 OUR-HPR 측량재선고계 PHA 합성량적방법가행.
Activated sludge process is an important approach for industrial Polyhydroxyalkanoate ( PHA) production. Off-line measurement with a time lag and complex analysis, is a common method for PHA, but is not suitable for the process control of PHA production. Based on a model for simultaneous storage and growth-soluble microbial products (SSAG-SMP), it is assumed that there is the linear relationship between the PHA synthesized and OUR or HPR, respectively. Further, a novel method to estimate PHA content based on in-situ monitoring data of oxygen uptake rate (OUR) and hydrogen-ion production rate (HPR) is established in this paper. The results of modeling OUR and HPR under different substrate concentrations showed that oxygen consumption proportion (kPHA,OUR ) and proton consumption proportion (kPHA,HPR ) of PHA synthesis were 0. 67 and 0. 57, respectively. The predicted results based on the linear relationship were essentially consistent with measured ones, and indicated that the method is feasible.