Abstract:
The sidewall of a rotary filter drum is provided with raised, perforate decking across which is formed a plurality of parallel grooves encircling the drum. Loops of filter medium are trained about the drum and rollers spaced therefrom. The loops are in a single layer and seat in the grooves to thereby be maintained in parallel, spaced-apart relationship. Division strips are provided longitudinally across the drum between sections of the decking to seal against the loops of filter medium between said sections. A circumferential seal is provided about the drum ends to stop leakage from the edges of the decking section while allowing expansion of the decking. An adjustable device is provided for tensioning the loops and for discharging cake therefrom.
Abstract:
A foam having inter-communicating fine pores throughout has a high liquid absorbing power and is rich in liquid-holding ability. When a slurry-state liquid is poured onto the surface of a liquid-permeable filter structure provided with such a porous layer having a good elastic recoverability from its compressed state, the liquid part of said slurry is absorbed in the foam structure due to the capillary action of the pores, whereas the mud-like solid part (wet cake) suspended in the slurry is retained on the surface of the porous layer in coagulated fashion and thus it is separated from the liquid part. By positioning a transfer means having a substantially even and smooth work surface so as to be in appropriate contact with the resulting layer of the solid part deposited on the sheet surface, the said solid part is transferred from the said sheet surface onto the work surface of the transfer means and is deposited thereon. Therefore, by causing this sheet structure to make continuous circulatory movement and also causing the transfer means which is positioned close thereto to move continuously at roughly the same speed and in the direction corresponding to the moving filter structure, and by continuously pouring the slurry-state liquid onto the foam surface, it is possible to continuously separate the said slurry into the solid part and the liquid part with a high efficiency. If the separating apparatus is arranged so that the filter structure is mounted on the circumference of a rotary drum body, the separating apparatus will conveniently have a compact size, requiring only a small floor area and space for its installation.
Abstract:
An apparatus includes a materials separator that includes a continuous filter belt disposed around a plurality of rollers. The apparatus also includes a pressure differential system operatively coupled to the separator and configured to adjust a pressure differential across the continuous filter belt. A vacuum is applied to the continuous filter belt and a fluid portion of the slurry on the continuous filter belt is drawn through the continuous filter belt. An apparatus includes a materials separator having a first deck with a first continuous filter belt and a second deck with a second continuous filter belt.
Abstract:
A device is for separating a medium comprising a mixture of a solid portion and a fluid portion. The device has a filter arrangement with a displaceable filter element having a plurality of openings that allow the fluid to be disposed through the openings while maintaining the solid portion on the filter element. The device further has an inlet for feeding the medium to the filter element and an outlet for discharging the solid portion from the filter element after that the fluid has been separated from the solid portion. The device further has an obstruction has an elastic element extending towards a surface of the filter element and adapted to contact the surface while allowing the medium to be displaced from the inlet to the outlet.
Abstract:
A system and process for removing from an aqueous stream impurities such as grit, particulates, floating debris, suspended solids, turbidity, bacteria, fecal coliform, oil, grease, color, and the like, and for treating an unacceptable biological oxygen demand, chemical oxygen demand, and/or dissolved oxygen by utilizing a treatment system positioned partially in a channel adapted to a flow of the aqueous stream. The treatment system comprises a containment zone for containing the aqueous stream for treatment by at least one of traveling or stationary screen filtration, aeration, anaerobic and/or aerobic digestion, clarification, media filtration, chemical addition, disinfection, pH adjustment, particulate removal, and/or the like. A partition wall is provided to bypass untreated water such as storm water. After passing untreated waste water through the treatment zone, the treated aqueous stream may be recycled for further use or discharged to its desired destination, such as a lake, river, or ocean.
Abstract:
A method for separating swine waste using at least one perforated conveyor belt and at least one fluid trough. A quantity of swine waste is collected through a slatted floor of a barn into at least one funneling channel. The quantity of swine waste is gravity-fed through the at least one funneling channel onto at least one perforated conveyor belt. Liquid waste is strained from the quantity of swine waste on at least one perforated conveyor belt into the fluid trough, retaining solid waste on the at least one perforated conveyor belt. The solid waste is then transported into a solid-waste storage vessel with the at least one perforated conveyor belt. Simultaneously, the liquid waste is gravity fed into a liquid-waste containment vessel from the at least one fluid trough. The solid waste and the liquid waste are stored to be processed later.
Abstract:
A system and process for removing from an aqueous stream impurities such as grit, particulates, floating debris, suspended solids, turbidity, bacteria, fecal coliform, oil, grease, color, and the like, and for treating an unacceptable biological oxygen demand, chemical oxygen demand, and/or dissolved oxygen by utilizing a treatment system positioned partially in a channel adapted to a flow of the aqueous stream. The treatment system comprises a containment zone for containing the aqueous stream for treatment by at least one of traveling or stationary screen filtration, aeration, anaerobic and/or aerobic digestion, clarification, media filtration, chemical addition, disinfection, pH adjustment, particulate removal, and/or the like. A partition wall is provided to bypass untreated water such as storm water. After passing untreated waste water through the treatment zone, the treated aqueous stream may be recycled for further use or discharged to its desired destination, such as a lake, river, or ocean.
Abstract:
The disclosed technology regards a water/solids separator for filtering slurry into residue cakes and filtrate water. The separator includes a frame supporting a plurality of rollers supporting a filter media belt, a plurality of blades and wipers for cleaning the rollers and removing excess filtrate water and cake material, and an inlet water manifold to distribute slurry water uniformly on the filter media belt. The frame supports a filter bed, with a slurry receiving area having a perforated panel at its base, for receiving, pre-filtering and moving the slurry through the separator, and a filter bed collection tub with an exit aperture for collecting and delivering filtrate to a water holding tank. The filter media belt traverses the plurality of rollers, through and about the filter bed, supported along a portion of its path by the perforated panel. Both a residue cake bin and a clean water holding tank may be provided with the system to collect residue and filtrate water, respectively, for re-use or disposal. The present invention also regards a method for separating filtrate water and cake residue from slurry, using the water/solids separator herein described, by continuously providing slurry through the inlet water manifold, while powering the gear motor to cause rotation of the drive roll, resulting in rotation of the filter media about the plurality of rollers. By this method and the disclosed technology, a portion of the water from the slurry is removed, through the filter media belt and the perforated panel.