A product that is an apparatus for removing debris from water containing such debris using a perforated plate, a backer plate, and a skimmer, positioned adjacent the back of the perforated plate to provide a means of removing debris from the perforated plate without scraping the debris from the perforated plate, the skimmer bar and the backer plate being synchronized in their movement.

A sludge treatment process including: adjusting sludge to a particle diameter of more than 2 mm to 45 mm or less; a step of pyrolyzing the adjusted sludge in a low-oxygen or oxygen-free atmosphere and at a temperature of 350° C. to 500° C.; and a step of combusting a gas generated in the pyrolysis. Such process may be used to decompose harmful compounds and maximize the efficiency of the process.

An apparatus for removing debris from water in a channel includes a bar screen assembly having a plurality of spaced apart, elongated filter bars arranged in a parallel relationship. A continuous conveyor carries a plurality of rakes. Each rake includes a plurality of spaced-apart tines interdigitated with the filter bars as the rake is moved along the filter bars by the conveyor to remove debris from the bar screen assembly. A conveyor belt retaining system includes at least one guide engaging an upstream side of an inner run of the conveyor and a counterweight connected to the at least one guide for biasing the inner run in a downstream direction.

Systems for algae-based water filtration and algae harvesting are described herein. A flow-way comprises a channel and a divider positioned within the channel that separates the channel into sub-channels. The flow-way further includes an algal growth that grows on a sidewall of the channel and/or the divider. The algal growth can be established in the flow-way by positioning a pre-seeded mesh element within the channel, the pre-seeded mesh element having an algae culture growing thereon prior to positioning the pre-seeded mesh within the channel. A harvesting system comprises a hinged container that includes a straining screen. The hinged container is positioned downstream from a flow-way and receives water from the flow-way. Biomass in the water is strained by and accumulates on the screen. Weight of the accumulated biomass causes the hinged container to tip and deposit the accumulated biomass in a second container.

The claimed invention relates to systems, devices, and methods of using the devices for eliminating air locks by using a filter cartridge with a truncated cone shaped lid that allows air to naturally flow to the highest point of the filter cartridge. The lid including a hole for releasing air that can slow or stop the filtration process. The filter cartridge further including a foam spacer to prevent filter media from escaping the filter cartridge and allow air to be released from the hole at the top of the filter cartridge.

An inlet filter and method of use are disclosed. In one aspect, the inlet filter comprises a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame is configured so an exterior of the frame is shaped like a wedge. The frame comprises a thick portion and a narrow portion opposite the thick portion. The thick portion of the frame comprises the feed stream inlet. The filter material is positioned along a bottom surface of the frame and a portion of an upper surface of the frame that is opposite the feed stream inlet in the narrow portion of the frame. In another aspect, the method comprises inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet.

A non-powered drain pump screen device is disposed in a river, a stream, a waterway, or a place in which a significant amount soil is carried by a water flow. Upper and lower impellers are provided with upper and lower blades. The lower blades prevent reentry of impurities while rotating due to resistance to a flow of fluid in a non-powered manner. The upper impellers are rotated in a non-powered manner, so that the upper blades filter impurities. The non-powered drain pump screen device is disposed in a waterway to remove impurities at low maintenance costs.

The present invention relates to a device (1) for filtering a fluid circulating in a plumbing and heating system, comprising a body (2) defining therewithin a filtration chamber (3) that is destined to have a fluid to be subjected to filtration pass through it. The body is provided with a first inlet/outlet opening (10), a second inlet/outlet opening (20) and a third inlet/outlet opening (30): each of which sets the filtration chamber (3) in communication with the outside of the device and can be associated with a line of the system to receive therefrom, or send thereto a fluid entering or exiting said body of the device. The device operates a passage of fluid through the filtration chamber (3), in a selective manner according to a plurality of operative configurations, from an opening between said first (10), second (20) and third inlet/outlet opening (30) to a further opening between said first, second and third inlet/outlet opening. The device further comprises filtering members (40) housed inside the filtration chamber and interposed between the inlet/outlet openings to perform filtering of the fluid passing through the filtration chamber; the filtering members comprise a mechanical filter (41) arranged in the filtration chamber and structured so as to divide the filtration chamber into a first sub-chamber (A), a second sub-chamber (B) and a third sub-chamber (C), in which the first sub-chamber is in fluid communication, without passing through the mechanical filter, with the first inlet/outlet opening, the second sub-chamber is in fluid communication, without passing through the mechanical filter, with the second inlet/outlet opening, and the third sub-chamber is in fluid communication, without passing through the mechanical filter, with the third inlet/outlet opening.

A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating the dusts after wet washing or spraying, and then conveying into a tailing sludge blending device (5) by means of a conveying device, mixing and stirring the tailing sludge and original sludge, conveying the obtained mixture into the drum (1), and drying the mixture to realize zero discharge of undried sludge.

The present disclosure relates to a system and process for separating sand and gravel in sediments of a sewage pipe network and recycling organic matters. The system includes a conveying grid plate, a mud outlet is provided below the conveying grid plate, and a masonry conveying area is provided at one side of the conveying grid plate; a fiber crushing tank, disposed below the mud outlet, and a crushing device is disposed below the mud outlet; a masonry scouring and recycling tank, provided with an interception grille located at one side of the masonry conveying area, a flushing device is disposed above the interception grille, a masonry outlet is provided in the masonry scouring and recycling tank, the masonry scouring and recycling tank is communicated with a muddy water return pipe, and the muddy water return pipe is communicated with the mud outlet.