Matches 1 - 50 out of 84 1 2 >
Match Document Document Title
7547389 Bottom seal  
A bottom seal, at the lower end of a step screen, is adapted to convey solid particles and other objects positioned in flowing water. The step screen has a grating including alternately fixed and...
7534355 Storm drain filter with variable flow capacity  
A filter for use in a storm water drain to prevent debris from reaching the outlet of the drain. The filter is adjustable to be sized for a range of flow capacities. The filter includes a main...
7517450 Pre-assembled flow control structured and related media filtration system  
A stormwater filtration system includes a stormwater containment structure including a concrete floor and a pre-assembled flow structure embedded in the concrete floor. The pre-assembled flow...
7494803 Bio-composting domestic waste treatment apparatus  
An apparatus for bio-composting domestic waste from residential dwellings, comprised of a tank, a multi-chambered liner and a separator. Domestic waste influent enters one end of a sluice, which...
7494585 Large area catch basin filter  
The present invention relates to an apparatus for maximizing the blockage of fluid borne solid materials from passage through a catch basin into the downstream parts of a fluid flow channel, with...
7468129 Oil-water separator  
An oil-water separator for use in a trench, which surrounds an oilfield. The separator is positioned in the ground such that an inlet conduit extends at about the same level as the bottom of the...
7416658 Elliptical motion drive device for a step screen  
Disclosed herein is an elliptical motion drive device for use in a step screen. The elliptical motion drive device comprises first and second eccentric wheels coupled to a single drive shaft to be...
7326335 Apparatus for removing solids from water in canal  
There is disclosed an apparatus for removing solids from water in a canal during or immediately after a rainstorm. The apparatus includes a plurality of filters and a carrier. The filters filter...
7294256 Storm water filter system  
A storm water filter system for filtering storm water being fed into an in-ground well includes a housing having an inlet and an outlet, with the outlet being connected to an in-ground recharge...
7128832 Filter pit  
A filter pit is disclosed. The pit has an inlet and an outlet adjacent a base of the pit. A primary, a secondary and a tertiary filter are located between the inlet and outlet and the tertiary...
7125486 Device for removing small solids from water in canal  
There is disclosed a device for removing small solids from water. The device includes an axle and a plurality of rotational filtering units installed on the axle. While rushed and hence rotated by...
7096627 Rain head  
A rain head is disclosed having three filters through which water entering an inlet to the rain head must pass before passing out through an outlet from the rain head. The filters remove...
7083721 Stormdrain curb-inlet multi-stage filtration-unit  
A hydraulic-permeation type environmental water-runoff filtration-system applicable to street curb-inlet type drainage-chambers, which generally cooperatively interconnect with street and...
7048850 Water screen  
A traveling water screen comprising an endless foraminous belt with flights. The foraminous belt forms a water screen extending from a lower end in a flowing stream to an upper end above the...
7011743 Water pollution trap with water flow baffles  
A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber are one or more baffles forming gaps and having apertures. The...
6994783 Water pollution trap with inlet basket  
A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a screen that is elevated for separating and suspending...
6939461 Water pollution trap with oil segregator/collector  
A chamber has an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a collection reservoir having an adjustable weir with a...
6936163 Water pollution trap with clay collector  
A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a pivotal filter that catches clay during typical storm...
6790345 Underwater filtration operator  
An underwater filtration operator which can be suspended in a river, lake, pond or other water body to filter water from the water body. The underwater filtration operator may be electrically...
6780310 Variable vortex baffle fluid filter  
A variable vortex, baffle fluid filter apparatus for installation primarily in urban storm water drain sumps. A circular, filter channel that is enclosed on all four sides by filter screens,...
6733663 Waste water treatment washer compactor system  
A wastewater treatment washer compactor system having in-channel motorized screen for installation in an influent channel and removal of screenings from the influent stream; at least one washer and...
6682651 Barrel type fish and/or particulate screen device  
A barrel type fish and/or particulate screen includes mesh stretched over a supporting cylindrical shell having closed ends. The closed interior opens to a fluid withdrawal conduit, which is...
6679994 Screening apparatus  
A method dealing with an overflow capacity of a fluid screening system is disclosed, the system ( 20 ) including a first screen ( 22 ) for screening objects of a first predetermined size from a...
6669854 Stepping screen assembly hydraulically driven  
A stepping screen assembly bottom portion is located in a liquid waste stream containing solids. The assembly contains a grid structure containing dynamic and static bars horizontally spaced apart....
6641720 Apparatus and methods for separating solids from flowing liquids or gases  
A means separates solid matter from liquid and includes a perforated separation panel through which the liquid can pass and which prevents the passage of the solid matter of a size larger than a...
6616834 Wastewater processor  
A wastewater treatment apparatus comprised of a water inlet 10, a filter component comprised of a series of filters 20, 30, 40 and settling ing areas 12, 22, 32 over a grade, and a series of...
6540911 Dewatering system  
A dewatering system for separating a stream of liquid from the items traveling therein. The dewatering system includes a primary grid which catches the stream of liquid from a flume or other...
6533946 Apparatus and method for recycling drilling slurry  
An apparatus and method for recycling drilling mud contaminated with particulates, consists of channelling a stream of contaminated slurry onto a screen deck, with the partly cleansed liquid...
6500331 Machine for micro-filtering solid particles suspended in a liquid stream  
The invention relates to a machine for micro-filtering solid particles suspended in a liquid stream comprising: a couple of coaxial filtering discs each rotating round its own axis arranged...
6467997 System and method for diverting fish around a structure  
A fish diversion apparatus for a water intake of a dam includes a frame extending between a top end oriented towards the water surface and a bottom end oriented below the water surface. The frame...
6464862 Gross pollutant trap  
A gross pollutant trap ( 50 ) to be installed in a storm water channel so as to receive storm water flowing through the channel and to filer gross pollutants from the storm water. The trap ( 50 )...
6428692 In-line storm water drain filter system  
An in-line storm water drain filter and baffle box is installed within a storm water drain pipe to direct storm water runoff through the storm water drain pipe and through the filter and baffle box...
6406620 Rainwater filters and gullies  
A rainwater filter assembly ( 1 ) comprises a housing provided with an inlet ( 9 ) and an outlet ( 3 ), the inlet is adapted to receive rainwater discharging from a downpipe ( 10 ), and in use the...
6402942 Catch basin curb inlet filter assembly  
A catch basin curb inlet filter assembly for preventing debris from being swept into the catch basin by rainwater. The filter assembly has first and second outer filters, an inner filter located...
6379541 Stormwater sediment and litter trap  
A pollution control device ( 10 ) for removal of litter and sediments from a flowing stream of stormwater or the like, the device including an upwardly inclined flume ( 11,18 ) adapted to be...
6312590 Mechanically cleanable screen  
A mechanically cleanable screen for separating liquid from chips and pulp without the screen getting blocked, particularly in the process area where cooking and circulation liquids are removed from...
6294085 Sewage screening apparatus  
A sewage screening apparatus which receives, in use, a sewage flow comprising a screen arrangement having a continuous belt screen for capturing screenings contained within the sewage flow to...
6251268 Filtering apparatus  
The invention relates to a filtering apparatus for removing matter and bodies accompanying a liquid flow. The filtering apparatus includes a number of individual filter elements disposed to be...
6245225 Stepped filtration device for mechanically separating solids from liquids  
A staged filter apparatus (1) for mechanically separating solids from liquids flowing in channels, gutters or conduits, which has a multiplicity of stage screen bars (7') connected to form a...
6241881 Pollution separator and filtration apparatus  
A stormwater pollution separator and filter apparatus to be fitted inline in a stormwater conduit. The apparatus has an inlet (1) receiving stormwater and leading through an inlet aperture (3) to a...
6231757 Apparatus for collecting and removing solid particles from a flowing fluid  
An apparatus for collecting and removing solid particles from a flowing fluid (5) includes a grid unit (6) including a plurality of stationary bars (1) being arranged to form a stationary bar unit...
6221257 Apparatus and method for treatment of discharged water and other fluids  
A fluid treating apparatus includes a primary conduit defining a flow path for the fluid being treated. A column is connected to the pipe forming an inlet into the flow path. A reaction container...
6190545 Drainwater treatment system for use in a horizontal passageway  
A drainwater treatment system positionable within a horizontal flow passage of a drainage system utilizes a partition which divides the flow passage into an upstream chamber and a downstream...
6187184 Traveling water screen having improved basket  
A basket for a traveling water screen which includes a top rail with a pair of spaced apart end members at opposite ends of the top rail which are joined to the top rail. A water screen extends...
6177020 Stepping screen assembly for collecting solids in waste water discharges  
A stepping screen assembly bottom portion is located in a liquid waste stream containing solids. The assembly contains a grid structure surrounded by an outer frame. The grid structure includes...
6096201 Apparatus for separation  
An apparatus for separating bodies from a flowing liquid in which the apparatus includes a rotary conveyor helix (3) which is disposed at an angle with the horizontal and has a lower portion (10)...
6096200 Filtering apparatus  
A filter apparatus (10) having an upstream first filter grate (17) to which stormwater is delivered so that litter is filtered therefrom. Litter is delivered to a first litter collection surface...
6086756 Gross pollution filter  
A water filter arrangement (10) for trapping gross pollutants flowing in a storm water system is provided in-line or at end-of-line of a storm water pipe. The arrangement comprises an inlet (14)...
5993651 Water influent particle removing apparatus  
An endless screen lifts fecal matter and sewer influent debris from an influent channel. The endless screen is powered by an externally positioned air cylinder driving a pawl and rachet to move the...
5855774 Storm drain filter  
A storm drain filter (10) functioning to remove selected substances from water flowing through a municipal storm drain. The storm drain filter (10) has an absorption filter (18) functioning to...
Matches 1 - 50 out of 84 1 2 >