PROCESS FOR PRODUCING A MICROBIAL STORAGE COMPOUND
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Applicant
Paques I.P. B.V.
Representative
Nederlandsch Octrooibureau
Application number
EP20186433A1
Kind
A1
Document number
3760591
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PROCESS FOR PRODUCING A MICROBIAL STORAGE COMPOUND

3760591 - EP20186433A1 - EPO

Application Dec 02, 2016 - Publication Jan 06, 2021

Hendrik DIJKMAN

Abstract

High levels of microbial storage compound (MSC) in the form of polyhydroxyalkanoates (PHA) can be produced from wastewater comprising Readily Biodegradable COD (RBCOD) using activated sludge comprising microorganisms capable of accumulating PHA by contacting the wastewater with the activated sludge in the presence of dissolved oxygen during a first period of time, to obtain PHA-loaded activated sludge, and then supplying elements essential for growth such as nitrogen and phosphorus and allowing up-take of these elements and limited growth during a second period of time, the supplied amount of at least of one of said essential elements compared to the amount of RBCOD supplied in step a) limiting the growth to an extent that notall PHA is used for growth, to obtain grown activated sludge; and removing or harvesting part of the PHA-loaded activated sludge and/or part of the grown activated sludge, so that the total average retention time of the sludge is less than 72 h.

Description

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Patent References

Patent Publication Date Title
WO0052189A N/A N/A
WO2011073744A N/A N/A
WO2012023114A N/A N/A
WO2014108864A N/A N/A
WO2014108878A N/A N/A
WO2013022874A N/A N/A
US20090317879A N/A N/A
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