公开(公告)号：EP2606007A1

公开(公告)日：2013-06-26

申请号：EP11770516.0

申请日：2011-08-17

申请人： Veolia Water Solutions & Technologies Support

发明人： BENGTSSON, Simon Olof Harald ,  BLANCHET, Elise Marie ,  GURGO E CIRNE, Maria das Dores Tavares ,  KARLSSON, Carl Anton Börje ,  WERKER, Alan Gideon ,  MORGAN-SAGASTUME, Fernando

IPC分类号： C02F3/12

CPC分类号： C02F3/1221 ,  C02F3/12 ,  C02F3/1263 ,  C02F2203/004 ,  C02F2209/10 ,  C02F2209/21 ,  Y02W10/15 ,  Y02W10/45

摘要： A method of biologically treating wastewater and removing contaminants from the wastewater is disclosed. In the course of treating the wastewater, biomass is produced. In addition to removing contaminants from the wastewater, the process or method of the present invention entails enhancing the PHA accumulation potential of the biomass. Disclosed are a number of processes that are employed in a biological wastewater treatment system for enhancing PHA accumulation potential. For example, enhanced PHA accumulation potential is realized by exposing the biomass to feast and famine conditions and, after exposing the biomass to famine conditions, stimulating the biomass into a period of feast by exposing the biomass to feast conditions for a selected period of time by applying an average peak stimulating RBCOD feeding rate of greater than 5 mg-COD\L\MIN in combination with an average peak specific RBCOD feeding rate greater than 0.5 mg-COD\g-VSS\MIN. In another example, the PHA accumulation potential of the biomass is enhanced by subjecting the biomass to feast conditions that cause the biomass to reach a peak respiration rate that is at least 40% of the extant maximum respiration rate of the biomass. Other processes are discussed that can contribute to enhancing PHA accumulation potential of biomass.

摘要翻译： 的生物处理废水和从废水中去除污染物的方法是游离缺失盘。 在处理废水过程中，生物质被产生。 除了从废水，处理或本发明的方法去除污染物需要增强生物质的PHA累积电位。 本发明公开了多种工艺中采用在用于增强PHA积累潜在的生物废水处理系统一样。 对于实施例，增强的PHA累积电位通过曝光生物质宴席和饥荒条件和，露出所述生物质饥荒条件后，通过暴露该生物质宴席用于通过选定的一段时间的条件刺激生物质转化为周期宴的实现 施加到大于5毫克-COD \大号\ MIN的组合平均峰值刺激RBCOD进料速率与平均峰值比RBCOD进料速率大于0.5毫克-COD \ G-VSS \ MIN。 在另一实施例中，生物质的PHA积累电位是通过对生物质的节日条件增强并引起生物量达到峰值呼吸率所做的是，生物质的最大现存呼吸率的至少40％。 其他进程进行了讨论确实有助于提高生物质的PHA积累潜力。

公开(公告)号：EP3186200A2

公开(公告)日：2017-07-05

申请号：EP15813096.3

申请日：2015-07-31

申请人： Veolia Water Solutions & Technologies Support

发明人： WERKER, Alan Gideon ,  KARABEGOVIC, Lamija ,  QUADRI, Luca ,  ARCOS HERNÁNDEZ, Mónica Vanessa ,  KARLSSON, Carl Anton Börje

IPC分类号： C02F3/00 ,  C02F3/08 ,  C02F3/34 ,  C12P7/62 ,  C02F3/10 ,  C02F103/28

CPC分类号： C02F3/085 ,  C02F3/00 ,  C02F3/006 ,  C02F3/109 ,  C02F3/341 ,  C02F2103/28 ,  C02F2203/004 ,  C02F2209/08 ,  C02F2209/10 ,  C02F2209/12 ,  C02F2209/16 ,  C02F2209/18 ,  C02F2301/106 ,  C02F2305/06 ,  Y02W10/15

摘要： A biofilm process is disclosed for treating wastewater containing readily biodegradable dissolved organic matter (measured as chemical oxygen demand or COD) and producing surplus biomass from the biofilm process that includes an enhanced polyhydroxyalkanoate (PHA) content. The process comprises directing a wastewater influent containing the readily biodegradable COD (RBCOD) into a biofilm unit process. The PHA content of surplus biomass is enhanced by controlling for a decreased biofilm process specific organic loading rate in combination with controlling phosphorus loading rates relative to the process RBCOD loading rates: (1) controlling the wastewater influent phosphorus loading rate to the biofilm unit process includes maintaining an average RBCOD/P ratio of the influent that is between 200 and 800 g/g; (2) decreasing the process specific organic loading rate includes producing a biofilm unit process effluent having readily separable mixed liquor volatile suspended solids (RS-MLVSS); and (3) separating a portion of the RS-MLVSS from the biofilm unit process effluent and recycling at least a portion of the separated RS-MLVSS back to the biofilm unit process. The combination of the RBCOD/P control and specific loading rate control maintains, on average, the surplus biomass with a PHA content that is greater than 30% gPHA/g VSS.

摘要翻译： 公开了用于处理包含容易生物降解的溶解有机物质（作为化学需氧量或COD测量）并且从生物膜过程产生包括增强的聚羟基链烷酸酯（PHA）含量的剩余生物质的废水的生物膜过程。 该方法包括将含有易生物降解的COD（RBCOD）的废水流入物导入生物膜单元过程。 （1）控制生物膜单元过程的废水进水磷负荷率包括控制生物膜过程特定有机负荷率与控制磷负荷率的组合过程中的剩余生物质的PHA含量 维持流入物的平均RBCOD / P比率在200和800g / g之间; （2）降低工艺特定的有机负荷率包括生产具有容易分离的混合液体挥发性悬浮固体（RS-MLVSS）的生物膜单元工艺流出物; 和（3）将一部分RS-MLVSS从生物膜单元处理流出物中分离出来，并将至少一部分分离的RS-MLVSS再循环回到生物膜单元处理。 平均而言，RBCOD / P对照和特定加载速率控制的组合维持PHA含量大于30％gPHA / g VSS的剩余生物量。