CAJ | 학술논문

研究了厌氧条件下水解酸化污泥接种量及污泥浓度对剩余污泥水解产酸、污泥减量的影响.在各反应瓶污泥浓度不同的情况下接种等体积的水解酸化污泥,当污泥停留时间为7 d时,剩余污泥具有较高的产酸量,超过7 d则反应进入厌氧消化的产甲烷阶段,表明接种污泥在反应的前7 d对剩余污泥产酸具有促进作用;水解酸化污泥接种量最多(35%)时其产酸量最高,7 d后作用逐渐减弱,污泥浓度成为影响产酸的主要因素.剩余污泥的水解过程与产酸过程具有相似的规律,MLVSS浓度随着时间的增加而逐渐下降,7 d后降幅趋缓,经过7 d的反应,污泥接种量最多(35%)的MLVSS浓度较开始时下降了27%,MLSS浓度下降了25.5%.
연구료염양조건하수해산화오니접충량급오니농도대잉여오니수해산산、오니감량적영향.재각반응병오니농도불동적정황하접충등체적적수해산화오니,당오니정류시간위7 d시,잉여오니구유교고적산산량,초과7 d칙반응진입염양소화적산갑완계단,표명접충오니재반응적전7 d대잉여오니산산구유촉진작용;수해산화오니접충량최다(35%)시기산산량최고,7 d후작용축점감약,오니농도성위영향산산적주요인소.잉여오니적수해과정여산산과정구유상사적규률,MLVSS농도수착시간적증가이축점하강,7 d후강폭추완,경과7 d적반응,오니접충량최다(35%)적MLVSS농도교개시시하강료27%,MLSS농도하강료25.5%.
The effect of inoculated sludge quantity and solids concentration on hydrolysis and acid-ification of waste activated sludge (WAS) and sludge reduction under anaerobic conditions was re-searched in reactors fed with various concentrations of WAS and equal quantity of inoculated sludge. The results show that in sludge retention time (SRT) of 7 days, WAS produces the highest quantity of volatile fatty acids (VFAs), while SRT >7 days results in methanogenic conditions. In the first 7 days, the inoc-ulated sludge enhances the VFAs production, and WAS with the largest quantity of inoculated sludge (35%) produces the largest quantity of VFAs, while the solids concentration becomes the main influen-cing factor for acidification after 7 days. MLVSS of WAS reduces gradually and after 7 days, a lower de-crease occurs. At the largest quantity of inoculated sludge (35%), MLVSS and MLSS are 27% and 25.5% less than those at the beginning.