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1. WO2014108878 - METHOD FOR INCREASED PRODUCTIVITY OF POLYHYDROXYALKANOATES (PHAS) IN FED-BATCH PROCESSES FOR BIOMASS DERIVED FROM THE TREATMENT OF WASTEWATER

Publication Number WO/2014/108878
Publication Date 17.07.2014
International Application No. PCT/IB2014/058242
International Filing Date 13.01.2014
Chapter 2 Demand Filed 06.11.2014
IPC
C12P 7/62 2006.1
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
7Preparation of oxygen-containing organic compounds
62Carboxylic acid esters
C02F 3/12 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
3Biological treatment of water, waste water, or sewage
02Aerobic processes
12Activated sludge processes
C02F 3/34 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
3Biological treatment of water, waste water, or sewage
34characterised by the microorganisms used
CPC
C02F 11/02
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11Treatment of sludge; Devices therefor
02Biological treatment
C02F 2209/21
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2209Controlling or monitoring parameters in water treatment
21Dissolved organic carbon [DOC]
C02F 2305/06
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2305Use of specific compounds during water treatment
06Nutrients for stimulating the growth of microorganisms
C02F 3/006
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
3Biological treatment of water, waste water, or sewage
006Regulation methods for biological treatment
C02F 3/12
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
3Biological treatment of water, waste water, or sewage
02Aerobic processes
12Activated sludge processes
C12P 7/625
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
7Preparation of oxygen-containing organic compounds
62Carboxylic acid esters
625Polyesters of hydroxy-carboxylic acids
Applicants
  • VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT [FR]/[FR]
  • WERKER, Alan Gideon [SE]/[SE] (US)
  • MORGAN-SAGASTUME, Fernando [CA]/[SE] (US)
  • KARABEGOVIC, Lamija [SE]/[SE] (US)
  • BENGTSSON, Simon Olof Harald [SE]/[SE] (US)
  • VALENTINO, Francesco [IT]/[IT] (US)
  • MAJONE, Mauro [IT]/[IT] (US)
Inventors
  • WERKER, Alan Gideon
  • MORGAN-SAGASTUME, Fernando
  • KARABEGOVIC, Lamija
  • BENGTSSON, Simon Olof Harald
  • VALENTINO, Francesco
  • MAJONE, Mauro
Common Representative
  • VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
Priority Data
61/751,44911.01.2013US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR INCREASED PRODUCTIVITY OF POLYHYDROXYALKANOATES (PHAS) IN FED-BATCH PROCESSES FOR BIOMASS DERIVED FROM THE TREATMENT OF WASTEWATER
(FR) PROCÉDÉ PERMETTANT D'OBTENIR UNE PRODUCTIVITÉ ACCRUE DE POLYHYDROXYALCANOATES (PHA) DANS DES PROCÉDÉS D'ALIMENTATION PROGRAMMÉE POUR BIOMASSE DÉRIVÉE DU TRAITEMENT DES EAUX USÉES
Abstract
(EN) 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.
(FR) Cette invention concerne des procédés de production d'une biomasse riche en PHA à partir de cultures mixtes ouvertes. La biomasse contenant une liqueur mixte est acheminée dans un réacteur en alimentation programmée, ledit réacteur comprenant au moins une zone de stimulation de biomasse et au moins une zone d'entretien de biomasse. Une charge d'alimentation contenant du RBCOD, N biodisponible et P biodisponible est acheminée dans le réacteur en alimentation programmée. La respiration d'au moins une partie de la biomasse est stimulée de manière intermittente et répétée dans la zone de stimulation par acheminement de la charge dans le réacteur en alimentation programmée et exposition de la biomasse à une concentration relativement élevée de RBCOD. La biomasse est ensuite transférée dans la zone d'entretien, où elle est exposée à une concentration relativement basse de RBCOD. Après quoi, la biomasse est remise en circulation alternativement entre la zone de stimulation et la zone d'entretien. Pendant toute la durée des procédés, la concentration de N et/ou de P par rapport à RBCOD dans la charge d'alimentation est régulée par régulation du rapport de N à RBCOD et/ou du rapport de P à RBCOD dans la charge.
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