An apparatus for the separation of dry matter and liquid from a medium includes: a plurality of press rollers and at least one pore roller, at least one separation chamber for receiving the medium, and at least one filtrate chamber defined in cross section by press rollers and the at least one pore roller. The apparatus is configured for establishing a relative negative pressure inside the pore roller interior, such that liquid in the medium is sucked into the pore roller interior, and for roller rotation such that during separation operation dry matter of the medium initially passes between the pore roller and a press roller when transferring from the separation chamber to the filtrate chamber, and subsequently passes between two press rollers, when exiting from the filtrate chamber.

The present disclosure relates to a fiber discfilter, and an object of the present disclosure is to provide a fiber discfilter with a means of forming grooves on a surface of filter cloths, the fiber discfilter being configured such that foreign substances in a deep part of a filter cloth having bristles as well as foreign substances on a surface of the filter cloth may be smoothly captured during a process of filtering inflow water, and all the foreign substances captured on the surface part and in the deep part of the filter cloth may be smoothly removed during a cleaning process by a cleaning means. The present disclosure provides a fiber discfilter including a groove forming means for forming a groove in a surface of a filter cloth, the fiber discfilter including: a filter unit configured such that a plurality of filter segments each having front and rear surfaces on which filter cloths each having a surface provided with bristles are installed is installed on an outer portion of a drum so that inflow water is filtered by being introduced into the filter segments while passing through the filter cloths; a cleaning means configured to remove foreign substances captured in the filter cloths; and a groove forming means disposed to be positioned at the periphery of the filter unit and having a plurality of protrusions configured to be inserted into the surface of the filter cloth and form grooves in the surface of the filter cloth when the filter unit rotates, such that foreign substances on the surface of the filter cloth and foreign substances in a deep part of the filter cloth are uniformly captured during a process of filtering the inflow water, and the foreign substances captured in the deep part of the filter cloth are exposed during a process of cleaning the filter cloth, such that the foreign substances captured in the deep part are smoothly removed.

A continuous chemical process is modified to allow parts thereto to be processed one quantum of matter at a time. This offers precision and efficiency beyond what is possible with the continuous mode. This Quantum Fluid Operation (QFO) is applied to basic unit operations: mixing, reacting, separating.

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.

A water treatment method treats raw water (water to be treated) containing organic wastewater. The method includes (i) an aeration process performs an initial absorption treatment by aerating the water to be treated, (ii) a filtration process for filtering the water to be treated which has been treated by the initial absorption treatment in the aeration process, (iii) a digestion treatment process for digesting solids captured by the filtration process, (iv) a biological treatment process for denitrifying, with activated sludge, filtered water obtained through the filtration process, (v) a sludge transfer process for sending the activated sludge from the biological treatment process to the aeration process, and (vi) an adjustment process for adjusting an amount of the activated sludge sent to the aeration process via the sludge transfer process based on a nitrogen concentration of treated water which has been biologically treated by the biological treatment process.

A solid-liquid separation device of the present invention is a solid-liquid separation device, in which a filtration belt (1), a seal belt (8), and a squeezing belt (15) are wound around an outer circumference of a separation roll (7) rotated in a circumferential direction and are able to run along a rotational direction of the separation roll (7), an object (P) to be processed supplied between the filtration belt (1) and the seal belt (8) is sandwiched between the filtration belt (1) and the seal belt (8) on the outer circumference of the separation roll (7) and squeezed by the squeezing belt (15), and the object (P) to be processed is dehydrated by being ventilated by ejecting a ventilation gas toward a radially outer side of the separation roll (7) via a ventilation gas chamber (10) formed in an inner circumferential portion of the separation roll (7), in which the seal belt (8) is a woven fabric of multifilament or a woven fabric obtained by combination of multifilament and monofilament and is a thinner than the squeezing belt (15).

A pulp-filter arrangement (1) comprises a rotatable drum (10) and a non-rotating valve arrangement (30). The rotatable drum (10) has a cylindrical water-permeable pulp-supporting shell (14), a plurality of drain pipes (16) and a rotating hollow shaft (18). The plurality of drainpipes (16) connects the rotating hollow shaft (18) with a collecting channel (22) situated radially directly inside the cylindrical water-permeable pulp-supporting shell (14). The non-rotating valve arrangement (30) is disposed within the rotating hollow shaft (18) for sealing off the rotating hollow shaft (18) from a radially inner outlet (24) of the drain pipes (16) when respective radially inner outlet (24) is situated within a sealed zone. The non-rotating valve arrangement (30) is further arranged to, in a transition zone immediately following the sealed zone, open a throttled passage between the rotating hollow shaft (18) and the radially inner outlet (24).

An filtration apparatus is disclosed. The filtration apparatus is to remove non-liquid contaminant from liquid carrier. The filtration apparatus may include an electrode having a first surface, wherein the electrode is to generate an electric field towards liquid carrier containing non-liquid contaminant. The filtration apparatus may include a reservoir having a wall defined at least partially by the first surface, the reservoir to house a volume of liquid carrier. The filtration apparatus may include a plurality of plates, each plate having an accumulation surface, wherein a portion of each plate is within the reservoir, so as to be submerged in the volume of liquid carrier. An electric field formed between the first surface and the accumulation surface of each plate of the plurality of plates may act on the liquid carrier, to thereby cause non-liquid contaminant to adhere to an accumulation surface of a plate of the plurality of plates. A method and a print apparatus are also disclosed.

A device and a method for filtering viscous or highly viscous liquids, in particular plastics melts, includes use of an oscillating filter plate.

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.