A gas lift conveyance device moves a slurry through an upwardly extending lifting section of a conduit in communication from a source location at a first pressure to a discharge location at a lesser second pressure. A gas injector of the device injects gas into the conduit through a variable position valve that is controlled by a controller that uses a representative value measured by a sensor as input to a closed loop control algorithm of the controller. The representative value may be a pressure or flow rate that is representative of the gas delivery rate. The device provides: (i) automated control over the delivery rate of slurries; (ii) real time values of air rate, valve position, and pressure; (iii) a reduction of energy input due to optimal use of air; and (iv) a reduction in air pumps stalling or plugging failures.
F04F 1/14 - Pompes utilisant un fluide intermédiaire, en surpression ou en sous-pression, agissant directement sur le liquide à pomper le fluide intermédiaire agissant sur la surface du liquide à pomper adaptées pour pomper des liquides particuliers, p. ex. des liquides corrosifs ou chauds
B01D 24/40 - Dispositifs d'alimentation ou d'évacuation d'alimentation
B01D 24/42 - Dispositifs d'alimentation ou d'évacuation d'évacuation du filtrat
B01D 24/48 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent combinés dans une même structure à des dispositifs de commande de la filtration
A gas lift conveyance device moves a slurry through an upwardly extending lifting section of a conduit in communication from a source location at a first pressure to a discharge location at a lesser second pressure. A gas injector of the device injects gas into the conduit through a variable position valve that is controlled by a controller that uses a representative value measured by a sensor as input to a closed loop control algorithm of the controller. The representative value may be a pressure or flow rate that is representative of the gas delivery rate. The device provides: (i) automated control over the delivery rate of slurries; (ii) real time values of air rate, valve position, and pressure; (iii) a reduction of energy input due to optimal use of air; and (iv) a reduction in air pumps stalling or plugging failures.
F04F 1/18 - Pompes utilisant un fluide intermédiaire, en surpression ou en sous-pression, agissant directement sur le liquide à pomper le fluide intermédiaire étant mélangé au liquide à pomper ou fabriqué à partir de celui-ci
B01D 35/02 - Filtres adaptés à des endroits particuliers, p. ex. conduites, pompes, robinets
The reduction of only the soluble fraction of organic matter prior to SND systems enhances nitrification rates while still providing residual particulate and colloidal organic matter to sustain denitrification in SND systems. Surprisingly, by increasing the amount of soluble organic matter reduced by conversion to biomass or microbial product and decreasing the amount of soluble organic matter reduced by oxidation to carbon dioxide prior to SND zones will still enhance nitrification rates while providing even more particulate and colloidal organic matter to improve denitrification in the SND zones.
The reduction of only the soluble fraction of organic matter prior to SND systems enhances nitrification rates while still providing residual particulate and colloidal organic matter to sustain denitrification in SND systems. Surprisingly, by increasing the amount of soluble organic matter reduced by conversion to biomass or microbial product and decreasing the amount of soluble organic matter reduced by oxidation to carbon dioxide prior to SND zones will still enhance nitrification rates while providing even more particulate and colloidal organic matter to improve denitrification in the SND zones.
Described herein are attached growth reactor systems which increase nitrifying bacteria biomass through a variety of means during warm weather. As a consequence, the attached growth reactor system contains sufficient nitrifying bacteria biomass to remove ammonia from wastewater in cold to moderate climates. In one example, there are two attached growth reactors into which wastewater is distributed discontinuously. Specifically, wastewater is transferred to the first attached growth reactor for a first period of time and then is transferred to the second attached growth reactor for a second period of time during warm weather which effectively doubles the nitrifying bacteria biomass in the system. During cold weather, wastewater can be applied to the reactors according to their increased nitrifying bacteria biomass, that is, according to their increased capacity to treat influent wastewater compared to standard operations.
Described herein are attached growth reactor systems which increase nitrifying bacteria biomass through a variety of means during warm weather. As a consequence, the attached growth reactor system contains sufficient nitrifying bacteria biomass to remove ammonia from wastewater in cold to moderate climates. In one example, there are two attached growth reactors into which wastewater is distributed discontinuously. Specifically, wastewater is transferred to the first attached growth reactor for a first period of time and then is transferred to the second attached growth reactor for a second period of time during warm weather which effectively doubles the nitrifying bacteria biomass in the system. During cold weather, approximately half of the wastewater is applied to each reactor simultaneously.
Described herein are attached growth reactor systems which increase nitrifying bacteria biomass through a variety of means during warm weather. As a consequence, the attached growth reactor system contains sufficient nitrifying bacteria biomass to remove ammonia from wastewater in cold to moderate climates. In one example, there are two attached growth reactors into which wastewater is distributed discontinuously. Specifically, wastewater is transferred to the first attached growth reactor for a first period of time and then is transferred to the second attached growth reactor for a second period of time during warm weather which effectively doubles the nitrifying bacteria biomass in the system. During cold weather, wastewater can be applied to the reactors according to their increased nitrifying bacteria biomass, that is, according to their increased capacity to treat influent wastewater compared to standard operations.
Described herein are attached growth reactor systems which increase nitrifying bacteria biomass through a variety of means during warm weather. As a consequence, the attached growth reactor system contains sufficient nitrifying bacteria biomass to remove ammonia from wastewater in cold to moderate climates. In one example, there are two attached growth reactors into which wastewater is distributed discontinuously. Specifically, wastewater is transferred to the first attached growth reactor for a first period of time and then is transferred to the second attached growth reactor for a second period of time during warm weather which effectively doubles the nitrifying bacteria biomass in the system. During cold weather, approximately half of the wastewater is applied to each reactor simultaneously.
Described herein are attached growth reactor systems which increase nitrifying bacteria biomass through a variety of means during warm weather. As a consequence, the attached growth reactor system contains sufficient nitrifying bacteria biomass to remove ammonia from wastewater in cold to moderate climates. In one example, there are two attached growth reactors into which wastewater is distributed discontinuously. Specifically, wastewater is transferred to the first attached growth reactor for a first period of time and then is transferred to the second attached growth reactor for a second period of time during warm weather which effectively doubles the nitrifying bacteria biomass in the system. During cold weather, approximately half of the wastewater is applied to each reactor simultaneously.
Described herein are attached growth reactor systems which increase nitrifying bacteria biomass through a variety of means during warm weather. As a consequence, the attached growth reactor system contains sufficient nitrifying bacteria biomass to remove ammonia from wastewater in cold to moderate climates. In one example, there are two attached growth reactors into which wastewater is distributed discontinuously. Specifically, wastewater is transferred to the first attached growth reactor for a first period of time and then is transferred to the second attached growth reactor for a second period of time during warm weather which effectively doubles the nitrifying bacteria biomass in the system. During cold weather, approximately half of the wastewater is applied to each reactor simultaneously.
Wastewater treatment equipment, namely, submerged attached growth reactors comprised of granular media, distribution chambers, and aerators for treatment of wastewater
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
11 - Appareils de contrôle de l'environnement
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
Produits et services
(1) Wastewater treatment apparatus, namely, aeration headers and diffusers, flow optimization baffles, floating covers, floating attached growth media, submerged attached growth reactors comprised of distribution chambers, aeration machines and attached granular filtration media (1) Distribution and maintenance of wastewater treatment systems
18.
Removing ammonia from waste water during cold weather months
Described herein is a Submerged Attached Growth Reactor (SAGR) which provides nitrification (ammonia removal) from wastewater in cold to moderate climates. The system described herein is novel in that the SAGR reactor includes more than one influent distribution point. Specifically, in addition to the first influent distribution point at the front end of the reactor, there is provided at least one additional distribution point(s) downstream of this first distribution point for introduction of influent into the reactor. As a result of this arrangement, when a second low carbonaceous biochemical oxygen demand (CBOD), high nitrogen influent is distributed into the reactor at a location downstream of the initial influent entry point, a second (or more) population of bacteria (mainly nitrifying bacteria) is established and/or maintained in a physically discrete part of the overall treatment reactor. This second (or more) population at a discrete location within the reactor is useful in the removal of ammonia from high CBOD influent when the reactor is exposed to low temperatures.
Described herein is a Submerged Attached Growth Reactor (SAGR) which provides nitrification (ammonia removal) from wastewater in cold to moderate climates. The system described herein is novel in that the SAGR reactor includes more than one influent distribution point. Specifically, in addition to the first influent distribution point at the front end of the reactor, there is provided at least one additional distribution point(s) downstream of this first distribution point for introduction of influent into the reactor. As a result of this arrangement, when a second low carbonaceous biochemical oxygen demand (CBOD), high nitrogen influent is distributed into the reactor at a location downstream of the initial influent entry point, a second (or more) population of bacteria (mainly nitrifying bacteria) is established and/or maintained in a physically discrete part of the overall treatment reactor. This second (or more) population at a discrete location within the reactor is useful in the removal of ammonia from high CBOD influent when the reactor is exposed to low temperatures.
wastewater treatment equipment, namely, submerged attached growth reactors comprised of distribution chambers, aeration machines and attached granular filtration media
