The present invention is a filter cleaning stand which provides a solution to the problem of convenient cleaning of a cartridge filter while also containing the wastewater generated while cleaning the cartridge filter. The core components of the invention are a base, a raised platform and a wall that partially encloses the filter. Generally speaking, the components are configured as follows: the raised platform is above the base and arranged to support a filter and allow water to pass under the raised platform, and the wall is above the base and is arranged to partially enclose the filter on the raised platform.

The present invention provides a multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water, the multi-structure filtration device comprising: a filtration tank filled with filtration target fluid inside; a filtration device unit having a cylindrical double drum structure, installed in the filtration tank so that a part of the filtration device unit is submerged in the filtration target fluid, and including two or more filters having different mesh sizes that are respectively wound on an inside and an outside of the filtration device unit, and one or more washing modules washing foreign substances attached to the filter wound on an outside of the filtration device unit. Accordingly, the multi-structure filtration device can have excellent filtration performance by double-filtering the target fluid using two or more filters, can operate in an eco-friendly manner by recycling filtered water and effectively washing the filters using the filtered water without separate chemicals, can increase the durability of the filters, and can reduce the washing and processing cost by reusing the filters.

A laminated spiral dewatering equipment, including a filtration cavity, a spiral shaft, a driving device and multiple supporting plates. The supporting plates are configured to support and position the filtration cavity, the spiral shaft and the driving device. The spiral shaft is penetratedly arranged in the filtration cavity. The filtration cavity includes a first closed ring piece group and a second closed ring piece group. A primary driving rod of the driving device is arranged above the filtration cavity, and is configured to drive an upper end of the first closed ring piece group to circumferentially reciprocate, and a lower end of the first closed ring piece group to perform a up-down reciprocating linear motion.

The present development is a septic tank or wastewater treatment tank outlet filter cleaning device. More specifically, the device is an outlet filter cleaner for a slotted filter used to reduce solid waste transfer into a septic tank effluent. The device comprises a central shaft with at least one cleaning disc, wherein the cleaning disc comprises a body which is mounted on the shaft and wherein a plurality of fingers protrude from the body, preferably in locations substantially identical to the positions of the openings in the wall of the tube.

A filter apparatus includes a filter, such as a cartridge, positioned within a housing. The filter apparatus has multiple ports and valves, so as to allow a user to easily switch between a filtration mode of filtering fluids and a maintenance mode of cleaning the filter. The filter can have a filter substrate in a housing and after filtrate builds up on the substrate, the substrate can be cleaned by directing a spray of fluid, such as from a ring of nozzles at the top of the housing, onto the substrate. A maintenance port can be provided to drain the debris washed from the substrate. The filter can switch between a backwash mode and a filtration mode.

A method for automated cleaning of a filter basket in a bioreactor includes determining permeability of the filter basket. A control unit controls a suction unit for suctioning a residual liquid from the liquid tank, a liquid metering unit for dispensing a liquid having a predetermined liquid volume into the filter basket controls the suction unit to empty the liquid tank by suctioning a filtered liquid volume, measures the volume of the suctioned liquid volume, and sending a first measurement signal to the control unit. The control unit determines a permeability quotient from the volume of the extracted filtered liquid volume to the volume of the dispensed predetermined liquid volume and compares the permeability quotient with a permeability threshold. The control unit then controls a cleaning unit to perform a cleaning process of the filter basket if the permeability quotient is below the permeability threshold.

There is described is a belt cleaning blow-off device having a streamlined inner surface. In one embodiment a fluid outlet nozzle is connectable to a conduit of a blow-off device for cleaning a belt filter. The nozzle comprises a housing having an inner surface and outer surface, wherein the inner surface defines a fluid entry zone to receive fluid into the nozzle and an elongated gap for directing fluid towards the belt. The inner surface is streamlined to facilitate flow of the fluid into the gap. In a second embodiment, the blow-off device comprises a housing connectable to a fluid source and having an inner and outer surface. The housing defines a conduit for transporting the fluid within a channel, wherein the inner surface defines a surface of the channel and an elongated gap for directing the fluid towards the belt. The inner surface is streamlined and typically teardrop-shaped to facilitate flow of the fluid into the gap.

The present invention is a filter cleaning stand which provides a solution to the problem of convenient cleaning of a cartridge filter while also containing the wastewater generated while cleaning the cartridge filter. The core components of the invention are a base, a raised platform and a wall that partially encloses the filter. Generally speaking, the components are configured as follows: the raised platform is above the base and arranged to support a filter and allow water to pass under the raised platform, and the wall is above the base and is arranged to partially enclose the filter on the raised platform.

A method and system for water-priming carbon micropore filter media using negative pressure. The method includes placing dry filter elements in a polymer bag, applying a vacuum of no more than approximately 33 kPa above zero pressure, and heat-sealing the bag using a heat-set bar; submerging, by a consumer, the vacuum-sealed bag with its the filter elements in water; the filters in the vacuum sealed bag are at least partially submerged, puncturing the bag to form one or more small openings in the bag below the water line. Breeching the vacuum causes the water to flow through the openings into the bag and the filter(s) to equalize the pressure between the water and the previously vacuum environment of the plastic bag, causing the surrounding water to quickly flow into the micro-pores of the filter media, thereby priming the carbon filter for use in the gravity-fed water-purification system.

A method and system for water-priming carbon micropore filter media using negative pressure. The method includes placing dry filter elements in a polymer bag, applying a vacuum of no more than approximately 33 kPa above zero pressure, and heat-sealing the bag using a heat-set bar; submerging, by a consumer, the vacuum-sealed bag with its the filter elements in water; the filters in the vacuum sealed bag are at least partially submerged, puncturing the bag to form one or more small openings in the bag below the water line. Breeching the vacuum causes the water to flow through the openings into the bag and the filter(s) to equalize the pressure between the water and the previously vacuum environment of the plastic bag, causing the surrounding water to quickly flow into the micro-pores of the filter media, thereby priming the carbon filter for use in the gravity-fed water-purification system.