According to various aspects and embodiments, a system and method for two-stage filtration is provided. The system includes an inlet fluidly connectable with wastewater, a first stage filter assembly that is fluidly connectable with the inlet and has a rotary drum with a filter surface configured for radially inward fluid flow, a second stage filter assembly that is fluidly connectable with the first stage filter and has a plurality of filter discs configured for radially outward fluid flow, and an outlet fluidly connectable with filtrate generated by the second stage disc filter assembly.

The present disclosure provides for a continuous rotary plate filter apparatus and a method of using the apparatus to separate slurries into liquids and solids. The methods and apparatus are useful for the production of fine chemicals and pharmaceuticals, particularly using Integrated Continuous Manufacturing (ICM), but can also be integrated with other manufacturing processes, such as batch and semi-continuous processes.

A device and method that removes moisture from human, animal, vegetable, and plant materials, yielding clear discharge water that can be returned to a sewage treatment plant. Some wastes can also yield fertilizer and an energy positive fuel source.

A dewatering system for removing solids from an influent includes a filtration assembly and a feed pipe upstream thereof. The dewatering system includes a solids receptacle downstream of the filtration assembly, and an effluent collector adjacent to the filtration assembly and in fluid communication with the filtration assembly. The dewatering system includes a sensor to sense a characteristic of an influent, an effluent and/or a solid. A control system is operatively connected to the sensor to receive a sensor signal therefrom and to generate an adjustment signal based on the sensor signal to improve the efficiency of the dewatering system.

A vat (1) with an inlet (2) for a suspension. A rotatable inner axial part (5) with peripheral channels (7) and at least one disc-shaped filter (8) mounted to the inner axial part (5). Within the vat the suspension is contained between partition walls (16A) in which the filters rotate. The filter (8) has inner flow channels (42) for transporting filtrate to channels (7) in the inner axial part (5). The filtrate from the channels (7) is combined in one end of the inner axial part (5) into at least one vacuum forming downpipe (12). Sprays (13) (15) detach material deposited on the filters. Mounted to the top of the partition walls (16A), which form receiving chutes (16), are guide plates (14A) for guiding material down into the chutes. Spray nozzles (14B) are located below the guide plate(s) and between the partition walls (16A) to clean the filtering surface (10).

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.

A filtration device has a primary conveyer tank which is equipped with a first conveyer, a primary drum filter which rotates inside the primary conveyer tank, a secondary conveyer tank which is equipped with a second conveyer and a secondary drum filter which rotates inside the secondary conveyer tank. Liquid in the primary conveyer tank passes through a first opening to flow into the secondary conveyer tank. Clean liquid flowing into a first clean tank is supplied to a low-pressure-side supply system by a first pump. Super-clean liquid having been filtered by the secondary drum filter passes through a second opening to flow into a second clean tank, and then is supplied to a high-pressure-side supply system by a second pump.

In one aspect, a filter disk for a device for dewatering sludge includes a screening plate. The screening plate has a plurality of openings for the passage of liquid and is substantially circular. Additionally, the filter disk has a supporting structure for supporting and/or stiffening the screening plate, wherein the supporting structure has at least one annular section.

Disclosed is a fly ring adapted to be used in a rotary drum filtering apparatus, and a method of forming such a fly ring. The fly ring comprises a plurality of ring segments, each ring segment being laser cut. Each ring segment has a first end which overlaps a second end of an adjacent ring segment, forming a lapped joint. Each ring segment first and second end has at least two spaced apart through holes, the through holes of the first end being aligned with the through holes of the second end. A custom fastener extends through the first end and second end aligned through holes.

A filtration device can be configured to form filter cakes and filtrate by filtering solid particulates from a slurry. Some embodiments of the filtration device can utilize a mechanism that is configured to separate the formed filter cake from a disc sector for subsequent processing of the solid particulates of the filter cake and/or the formed filtrate. Embodiments of the filter device and/or mechanisms of the filter device as well as methods of making and using the same can help provide improvements in operational efficiency for processing operations in which solids are to be filtered from a slurry.