公开(公告)号：EP3186201A1

公开(公告)日：2017-07-05

申请号：EP15772010.3

申请日：2015-08-06

申请人： Veolia Water Solutions & Technologies Support ,  University of Rome

发明人： WERKER, Alan Gideon ,  BENGTSSON, Simon Olof Harald ,  HJORT, John Markus ,  MORGAN-SAGASTUME, Fernando ,  MAJONE, Mauro ,  VALENTINO, Francesco

IPC分类号： C02F3/12 ,  C02F3/34 ,  C12P7/62

CPC分类号： C02F3/1205 ,  C02F3/1263 ,  C02F3/34 ,  C02F2203/004 ,  C02F2209/06 ,  C02F2209/08 ,  C02F2209/22 ,  C02F2305/06 ,  C12P7/625 ,  Y02W10/15

摘要： A process for producing PHA comprises obtaining biomass produced in the course of biologically treating a first wastewater source containing RBCOD. The biomass is to be exploited with a second wastewater source having a different RBCOD content from the first wastewater source in order to accumulate and thereby produce PHA. Before subjecting the biomass to a PHA accumulation process, the biomass PHA accumulation potential is enhanced via an acclimation process with the second wastewater source. During acclimation, the biomass is subjected to repeated feast-famine periods. During each feast period, the biomass is exposed to a fraction of the second wastewater source. The RBCOD uptake and/or biomass respiration rate is directly or indirectly measured during each feast period. The famine period is maintained for a period of time that is at least two times greater than the length of time of the proceeding feast period. After at least two feast-famine acclimation periods or after one or more measured parameters reveal an increased RBCOD relative uptake or respiration rate of the biomass during a subsequent feast period, the biomass is subjected to a PHA accumulation process using the second wastewater source.

摘要翻译： 生产PHA的方法包括获得在生物处理含有RBCOD的第一废水源的过程中产生的生物质。 生物质将与来自第一废水源的具有不同RBCOD含量的第二废水源一起开采，以积累并由此生产PHA。 在使生物质经受PHA积累过程之前，通过使用第二废水源的适应过程来增强生物质PHA积聚潜力。 在适应期间，生物质遭受反复的盛宴 - 饥荒期。 在每个节日期间，生物质暴露于第二废水源的一部分。 在每个节日期间直接或间接测量RBCOD吸收量和/或生物量呼吸速率。 饥荒时期保持一段时间，至少比正在进行的盛宴时间长两倍。 在至少两次盛宴 - 饥荒适应期之后或者在一个或多个测量参数之后，揭示在随后的盛宴期间生物质的RBCOD相对摄取或呼吸速率增加，使用第二废水源对生物质进行PHA积聚过程。

公开(公告)号：EP2943576A1

公开(公告)日：2015-11-18

申请号：EP14702089.5

申请日：2014-01-13

申请人： Veolia Water Solutions & Technologies Support

发明人： WERKER, Alan Gideon ,  MORGAN-SAGASTUME, Fernando ,  KARABEGOVIC, Lamija ,  BENGTSSON, Simon Olof Harald ,  VALENTINO, Francesco ,  MAJONE, Mauro

IPC分类号： C12P7/62 ,  C02F3/12 ,  C02F3/34

CPC分类号： C12P7/625 ,  C02F3/006 ,  C02F3/12 ,  C02F11/02 ,  C02F2209/21 ,  C02F2305/06

摘要： This disclosure relates to methods for producing a PHA-rich-biomass from open mixed cultures. Mixed liquor containing biomass is directed into a fed-batch reactor. The reactor includes at least one biomass stimulating zone and at least one biomass maintenance zone. A feed containing RBCOD, bioavailable N, and bioavailable P is directed into the fed-batch reactor. The respiration rate of at least a portion of the biomass is intermittently and repeatedly stimulated in the stimulating zone by directing the feed into the fed-batch reactor and exposing the biomass to a relatively high concentration of RBCOD. The biomass is then transferred to the maintenance zone, where the biomass is exposed to a relatively low concentration of RBCOD. Thereafter, the biomass is circulated back and forth between the stimulating zone and the maintenance zone. Throughout the methods, the concentration of N and/or P relative to the RBCOD in the feed is controlled by controlling the ratio of N to RBCOD and/or the ration of P to RBCOD in the feed.