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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...
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5840180 |
Water flow segregating unit with endless screw
The segregating unit of the invention is installed in a sewer pipe section having an upstream end and a downstream end, and a peripheral wall including a floor and a ceiling. The segregating unit...
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5770055 |
Strainer for removing particles from effluent
A strainer for removing particles from a horizontal flow of effluent comprises a plurality of parallel fixed bars adapted to extend angularly downwardly into the flow of effluent and a set of...
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5593597 |
Filtration system comprising sieving trough, helix and additional sieving apparatus
The invention relates to an apparatus for removing solid components from a fluid in a trough (1) having a transport device (3) in the form of a transport trough (4) and a rotationally driven...
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5587067 |
Wastewater treatment apparatus
Headworks for preliminary treatment of wastewater in a sewage treatment plant provides for primary filtration of grit and other coarse debris, de-ragging in a flume which carries the water away...
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5562819 |
Apparatus for trapping, signalling presence of and collecting debris in waterways
Apparatus for trapping and collecting debris including an in-line trap contained in a subterranean chamber having an inlet and an outlet for connection to an underground conduit such as a sewer or...
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5552044 |
Apparatus for separating solid material and liquid
Apparatus for separating waste liquid and solid material comprises an upwardly inclined passage containing an auger for conveying the solid waste material upwardly along the passage, with an inlet...
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5534140 |
Bar screen having compound fine screen bar rack
A bar screen for screening a flow of wastewater, the bar screen comprising a frame, a first bar rack supported by the frame and extending across the flow of wastewater, the first bar rack including...
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5507944 |
Storm water drainage filter system
The present disclosure concerns a storm runoff filtration system for placement into in-place storm drainage systems. In locations where runoff is directed vertically or nearly vertically downward...
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5456826 |
Separating grid
A separating grid (1) for collection and removal of solid particles and objects (4) from running water (2) in a channel (2). The separating grid (1) comprises a stand (9) including a separating...
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5419838 |
Groundwater storage and distribution system having a gallery with a filtering means
A system for filtering, storing, and distributing groundwater, which includes a gallery having an elongated main body portion with an arch-shaped configuration with an enlarged inner chamber,...
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5407563 |
Screening panels
A band screen (1) for installation across a channel (2) containing a flowing liquid (6) comprising an endless belt of screening panels (19), each provided with inwardly extending leading and...
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5385669 |
Mining screen device and grid structure therefor
A grid structure and screen device including the grid structure are provided for a vibrating shaker for filtering solids out of a moving fluid stream passing across this screen device. The grid...
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5300221 |
Filter arrangement
The filter arrangement is provided with a filter in the form of an endless conveyor which is releasably mounted within a transport chute through which a flow of water can be directed. The filter is...
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5277799 |
Pump compartment screening arrangement for a tank
A screening arrangement is disclosed for protecting the pump compartment of a tank from the entrance of debris including a holder frame mounted in the tank, slidably receiving therein a pair of...
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5223154 |
System for filtering liquids in a catch basin using filters in series and overflow channels
Apparatus, methods and media for filtering liquids are especially suited for insertion into an existing storm water catch basin. The filtration that occurs reduces concentration of storn water...
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5207904 |
Apparatus for composting waste material
Apparatus for composting biological waste material, comprising a screen for separating the waste material into solids and liquids, a sludge outlet for adding sludge to the solids to form a mixture...
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5108592 |
Rotary self-cleaning strainer simultaneously cleaned and rotated by nozzle structure
A rotary self-cleaning strainer comprises a circular cylindrical walled pipe on which a circular cylindrical filter screen assembly is journaled for rotation. The pipe has an intake that is...
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5098561 |
Machine for intercepting solid constituents in liquid streams
A machine for intercepting solid constitutents in a liquid stream, such as sewage, has a frame which carries a downwardly sloping screen positionable in and across the stream so that the liquid...
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5059313 |
Conveyor rake sieve with hook-like plates
A separating apparatus, in particular for clarification plants, comprises a revolving strainer rake or rake sieve having a plurality of series connected rake sieve sections which each consist of...
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5037541 |
Sanitary device for sewerage channel
A sanitary device for a sewerage channel with an openable grating includes a bottom plate and four side walls which together define a space therebetween for accommodating several filtering plates...
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5032262 |
Device in rinsing screens
A system for removing objects from flowing liquid includes a screen for removing the objects from the liquid. The screen includes a movable component and a driving mechanism for moving the...
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4921599 |
Double-rack grating for use in wastewater
A double screen or double-rack grate for use in the extra-fine screening of waste waters includes two rows of rods in laterally staggered arrangements with one row positioned behind the other in...
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4853116 |
Device for collecting and discharging solid matter
A device for collecting and discharging solid matter from a liquid-solid mixture in a waste collecting stream having a grid structure including alternate stationary and displaceable bars, the...
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4721835 |
Microwave brewing cup
A brewer assembly which is particularly useful for preparing small quantities of coffee or the like in a microwave oven, comprised of a cup for accepting the charge of ground coffee and water, and...
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4713179 |
Removable culvert grate
A removable culvert grate for placement adjacent the inflow end of a culvert. The grate includes a vertical grate having a plurality of slats to prevent the flow of beaver workings or similar...
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4668389 |
Cleaning device arranged in front of the inlet to a waterway
Excessive oil contamination creates difficulties for water entering waterways. The invention reduces these difficulties by causing the water to flow through three passages on its way to the inlet,...
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4561975 |
Self-relieving bar screen
A self-relieving bar screen, for intercepting debris moved by a liquid through a conduit into a space having a greater lateral dimension, includes a series of bars disposed in spaced lateral...
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4407716 |
Liquid flow system including multi-axial liquid flow screening means for excluding oversized slender objects carried by a liquid
A liquid flow system which comprises means to screen long slender objects from a liquid flowing in a conduit. The screening means comprises a set of opposed, aligned, undulating surfaces, each...
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4297219 |
Temporary stream filtration system
An apparatus constructable in situ for filtering pollutants from a flowing creek or stream, comprising one or more adjacent and/or cascaded flume-type boxes supported by the stream bed, each of...
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4184957 |
Screening apparatus for removing coarse material from fluids including a screen cleaner
A pair of screens are arranged one behind the other and served by a common cleaning rake for the removal of the screenings from both screens in a single operating step.
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4042506 |
Apparatus for removing solid material from sewage or other liquid
Apparatus for removing solid material from a flow of sewage or other liquid, the apparatus having a duct through which in use sewage will flow and two screens located in said duct adjacent to each...
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3850804 |
SCREENS FOR WATER INTAKE SYSTEMS
A travelling water screen unit comprises an endless series of pivotally interconnected rectangular screens. Each screen comprises a frame having ends attachable to corresponding links of parallel...
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3599794 |
PURIFICATION PLANT FOR AERATION OF SEWAGE
A process and a purification plant for the aeration of sewage in an aeration tank with displaceable aeration means arranged close to the bottom of the tank.
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2996189 |
Filter screen installation
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