MARK K ADDISON
Engineers in Bear, DE

8518266, Aug 27, 2013

Nov 16, 2009

12/591320

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

RG Delaware, Inc. - Wilmington DE

C02F 1/24

210703, 2102212

A dissolved air flotation clarifier for removing impurities from a liquid to be clarified. The dissolved air flotation clarifier includes a housing having an inlet for receiving a liquid to be clarified. The housing further includes a reaction zone, a clarification zone and an effluent channel. The reaction zone has at least one saturated water distributor and at least one dissolved air flotation nozzle operably connected to the at least one saturated water distributor to receive saturated water from the at least one saturated water distributor. The dissolved air flotation nozzle is configured to release micro-bubbles from a saturated water so that the micro-bubbles can mix with the liquid to be clarified to remove impurities from the liquid to be clarified. The clarification zone includes a flow control member for controlling the flow of the mixture of micro-bubbles and liquid in the clarification zone to ensure that the area surrounding the inlet to the effluent channel has little or no micro-bubbles to prevent or significantly reduce micro-bubbles from becoming entrained in a clarified liquid passing through the effluent channel.

6998046, Feb 14, 2006

Aug 9, 2002

10/214580

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

RG Delaware, Inc. - Wilmington DE

B01D 24/18

210264, 210273, 210279, 210292, 210293, 210340, 210341, 210416, 210427, 210108, 210472, 210605

A filter system employing a modular filter and at least one high rate pre-treatment system for expeditiously and effectively filtering water. The modular filter includes a reservoir housing for containing fluid. A plurality of filter cells are disposed in the reservoir housing for filtering influent passed through the reservoir housing. Each of the plurality of filter cells has at least one layer of media. A moveable backwash assembly is provided for sequentially backwashing the plurality of filter cells. The backwashing procedure is performed on the modular filter system such that while one of the plurality of cells is being backwashed the remaining cells are filtering pre-treated influent processed by the pre-treatment system. The pre-treatment system preferably has a footprint considerably smaller than the footprint of the modular filter. Further, the pre-treatment system preferably includes at least two pre-filters such that when one of the pre-filters is being cleaned the other pre-filter is still directing treated influent to the modular filter for further processing.

7922903, Apr 12, 2011

Nov 30, 2006

11/606012

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

RG Delaware, Inc. - Wilmington DE

B01D 24/46, B01D 29/62, B01D 41/02

210269, 210274, 210275, 210279, 210291

A system and method for uniformly distributing fluids (e. g. , washing and in-service) through a filter bed of a filter. The system and method of the present invention can be used with any type of filter that uses media to remove impurities from a fluid. The filter bed can include one or more layers of media. The media can be natural (e. g. , sand, gravel, anthracite, etc. ) or can be fabricated (e. g. , plastic). The filter media can be supported by one or more layers of gravel. Alternatively, the filter media can be supported by a porous plate or other support designed to replace the gravel layers. The present invention includes a system having a distribution member configured to uniformly distribute a fluid through a filter bed of a filter. Preferably, the distribution member can be readily installed by relatively unskilled labor in both existing filters and new filters.

8585896, Nov 19, 2013

Jun 10, 2011

13/067589

R. Lee Roberts - Rose Valley PA, US
Mark Kevin Addison - Bear DE, US

Roberts Marketing DE, Inc. - Wilmington DE

B01D 21/02, B01D 21/00

210232, 210522, 2105321, 210541

A filter or clarification system for removing impurities from a liquid to be treated, i. e. , influent. The system preferably includes a chamber for receiving a liquid to be treated. The chamber has a settling assembly including a plurality of inclined settling members forming a plurality of inclined liquid passageways through which the liquid to be treated is directed to remove impurities from the liquid to be treated. Preferably, the headloss of the settling assembly is solely controlled by one or more orifices formed in the settling members, i. e. , the settling assembly is free of gaps formed between the settling members that appreciably affect the headloss of the settling system. Support members are provided for each of the settling members to allow the settling members to be easily and readily removed. Preferably, the support members provide sufficient stability to allow an individual to walk on the tops of the settling members. Preferably, the support members are configured to enhance clarification or filtration.

2006027, Dec 7, 2006

Jun 6, 2005

11/144837

R. Roberts - Chadds Ford PA, US
Mark Addison - Bear DE, US

B08B 7/04, B08B 9/20, B08B 3/00

134010000, 134025100, 134110000

A pretreatment unit and associated method for pre-treating filter media used to filter water or wastewater prior to installation in a filter. Preferably, the pretreatment unit includes a pretreatment chamber for temporarily storing and pre-treating filter media prior to installation of the filter media in a filter. The pretreatment chamber has a liquid distribution system for distributing liquid through the filter media at a sufficient velocity to remove fines or other unwanted material from the filter media. The washing liquid may be super chlorinated to sterilize the filter media. The pretreatment unit also includes a collector for collecting fines or other unwanted material removed from the filter media. Preferably, at least a portion of the collector is disposed in the pretreatment chamber. The pretreatment unit further includes a filter media discharge port for discharging filter media treated in the pretreatment chamber. The preferred method of pre-treating filter media is designed to eliminate or significantly reduce the costly and arduous conventional treatment procedures performed on filter media after the filter media is installed in a filter.

6325931, Dec 4, 2001

Aug 17, 2000

9/639820

R. Lee Roberts - Chadds Ford PA
Mark Kevin Addison - Bear DE
Andrew Scott Taylor - Southampton PA

RG Delaware, Inc. - Wilmington DE

B01D 3500, B01D 4102, B01D 4104

210293

An improved underdrain block for an underdrain system supporting a filter media bed in a liquid filtration system is provided. The underdrain blocks are preferably made of an extrudable polymeric material that is extruded in relatively long sections to provide light weight, strong, easily manufactured underdrain systems having a lower profile than prior art underdrain blocks. The underdrain block comprises an upper wall, side walls, a lower wall, at least one lateral member between the upper wall and the lower wall, at least two chambers within the underdrain block, each chamber being defined by the lateral member, a plurality of upper orifices in the upper wall of the underdrain block, and a plurality of internal orifices in the lateral member. The underdrain block is substantially greater in longitudinal length than a longitudinal distance between the upper orifices. In one embodiment, the underdrain block has rails situated on the upper wall for engaging extruded members, which in turn, have receiving recesses for receiving a layer of porous filter media.

2008023, Sep 25, 2008

Mar 23, 2007

11/723994

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

C02F 1/44, B01D 36/02

210641, 210335

A filter system for filtering water and/or wastewater that includes a roughing filter followed by a polishing filter where the roughing filter is an upflow filter and the polishing filter is a membrane filter. The upflow filter includes a filter bed formed from one or more layers of media. The media may be naturally occurring or plastic. Further, the media may be buoyant or non-buoyant. Preferably, the filter system is formed as a package unit. The upflow filter and membrane filter may share a common base allowing the filter system to be readily transported as a single unit. Alternatively, the membrane filter may be connected to and supported by a vertical wall of the upflow filter. The membrane filter may include membrane filter modules that are housed as a group in a section of the membrane filter or the membrane filter modules may be individually housed. The washing liquid used in washing the upflow filter may be discharged from the upflow filter through the same conduit as the upflow effluent generated during filtration. Preferably, the upflow waste line is positioned adjacent the membrane filter drain to allow the upflow waste line and the membrane filter drain to direct liquid to the same storage area or unit through at least one common conduit. The water level of the clearwell is preferably positioned a sufficient distance below the water level of the upflow filter to achieve the desired loading rate across the membrane filter without the need for pumping the upflow effluent into the membrane filter.

7927485, Apr 19, 2011

Jun 2, 2008

12/155287

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US
Karl Michael Kyriss - West Chester PA, US

RG Delaware, Inc. - Wilmington DE

C02F 1/52

2101953, 210205, 210220, 2102211, 210265, 210519, 210522

A filter system for filtering water and/or wastewater including a sludge blanket clarifier for removing at least some impurities from influent. The sludge blanket clarifier includes a clarifier compartment in which a sludge blanket is to be formed to remove at least some impurities from influent directed into the clarifier compartment and through the sludge blanket. The clarifier compartment has at least one vertical sidewall extending from a bottom of the clarifier compartment to a top of the clarifier compartment. The clarifier compartment has a cross-sectional area that varies over at least a portion of a height of the clarifier compartment such that the velocity of influent just prior to entry into the sludge blanket is less than the velocity of influent just after entering the clarifier compartment.

D519601, Apr 25, 2006

Sep 17, 2004

29/213398

Mark Kevin Addison - Bear DE, US

RG Delaware, Inc. - Wilmington DE

2301

D23209, D23261

7820043, Oct 26, 2010

Apr 10, 2006

11/400330

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US
Jason Samuel Schmoyer - Glen Mills PA, US
Aleksandr Vladimirovich Ilyin - Chester Spring PA, US

RG Delaware Inc. - Wilmington DE

B01D 24/24

210232, 210291

A filter system for filtering water and/or wastewater which includes an underdrain system having a plurality of laterals that are anchored to the floor of a filter by a hold-down assembly. Preferably, the hold-down assembly does not rely on grout or other substance that is applied in a viscous or semi-viscous state and subsequently hardened as the primary means for connecting the underdrain laterals to the floor of the filter. Preferably, the hold-down assembly includes hold-down clips that can move relative to an anchor assembly and corresponding underdrain blocks so that the hold-down clips can cooperate with any desired portion of the corresponding underdrain blocks.