PAQUES I.P. B.V.
|PAQUES I.P. B.V. Patent applications|
|Patent application number||Title||Published|
|20160052811||PROCESS FOR BIOLOGICAL REMOVAL OF NITROGEN FROM WASTEWATER - The invention relates to a process for biological removal of nitrogen from wastewater comprising: (a) providing a stream of wastewater comprising ammonium; (b) continuously supplying the stream of wastewater to a reactor containing granular sludge comprising granules having a core of anammox bacteria and an outer rim of ammonia oxidizing bacteria; (c) subjecting the wastewater in the reactor to ammonium oxidation under ammonium oxidizing conditions comprising a temperature in the range of from 5 to 25° C., a concentration of dissolved oxygen in the wastewater in the range of from 0.4 mg/L to 4.0 mg/L, and a hydraulic retention time of the wastewater in the reactor in the range of from 0.5 hours to 1.5 days, to obtain a gaseous stream comprising nitrogen and a dispersion of granular sludge and non-granular sludge in treated wastewater; and (d) continuously separating the dispersion obtained into a stream comprising granular sludge and a stream comprising treated wastewater and non-granular sludge and recycling the stream comprising granular sludge to the reactor and discharging the non-granular sludge from the process, wherein the granular sludge has a retention time in the reactor of at least ten times the hydraulic retention time, and wherein the retention time of any non-granular sludge in the reactor is equal to or at most three times the hydraulic retention time.||02-25-2016|
|20150344326||HYDROGEN SULFIDE REMOVAL FROM ANAEROBIC TREATMENT - Hydrogen sulfide can be removed from a liquid effluent of an anaerobic reactor, by subsequently: —contacting the effluent liquid in counter current with a treated product gas of the anaerobic reactor to absorb hydrogen sulfide in the gas, —collecting the desulfurised effluent liquid after said contacting, —discharging at least part of the collected desulfurised effluent recirculation liquid as a treated effluent. To a remaining part of the desulfurised effluent waste water can be added and mixed, and the mixed water can be fed to the anaerobic reactor. Spent gas of the contacting step can be combined with sulfide-containing product gas of the anaerobic reactor and treated by desulfurisation.||12-03-2015|
|20130206684||PURIFIER COMPRISING A SOLIDS SEPARATION DEVICE, AND METHOD FOR WASTEWATER PURIFICATION - The invention relates to a purifier (||08-15-2013|
|20110263009||METHOD FOR THE FILTRATION OF A BIOREACTOR LIQUID FROM A BIOREACTOR; CROSS-FLOW MEMBRANE MODULE, AND BIOREACTOR MEMBRANE SYSTEM - The invention provides a method for the filtration of a bioreactor liquid (||10-27-2011|
|20110168021||SETTLING DEVICE, PURIFIER COMPRISING A SETTLING DEVICE AND METHODS FOR ANAEROBIC OR AEROBIC PURIFICATION OF WASTE WATER - A three phase separator or settling device (||07-14-2011|
Patent applications by PAQUES I.P. B.V.