A device for forming a liquid treatment apparatus includes a main part, a receiving part including a cavity for receiving a connecting head of a replaceable liquid treatment cartridge having at least one port in liquid communication with an interior of the liquid treatment cartridge. The receiving part is journalled for movement between a first and a second position with respect to the main part. The head is insertable into and retractable from the cavity in the first position. The liquid treatment cartridge is lockable to the device by at least moving the receiving part with the inserted connecting head into the second position. The movement includes a component corresponding to an intrinsic rotation in a plane parallel to a direction of insertion. The movement further includes at least a component corresponding to a displacement of the receiving part relative to the main part.

The disclosure relates to devices and systems for configurable, contaminant-specific water filtration and treatment under pressure. In particular, the disclosure relates to a contaminant-specific configurable and modular water filter and a water filtration system maintained under positive or negative pressure, comprising modular housings, each housing defining a plurality of reconfigurable compartments operable to accommodate contaminant-specific filtering units in an order configured to minimize pressure drop along the flow direction of the water.

Disclosed is a pressostatic odor control cover for slurry treatment tank with a device for reducing the inner volume occupied by harmful and malodorous gases emitted from the surface of the slurry. The treatment tank is delimited by a base and by lateral containment walls. The cover includes: a gas impermeable flexible membrane; a gas-tight continuous fixing unit of a margin of the membrane to the tank; an insufflation unit of air inside the cover; and a discharge valve of the air out of the cover. The odor control cover also includes a diaphragm permeable to liquids and to gases, arranged to delimit a reduced volume of the odor control cover available to the harmful gases and to the malodorous substances released from the slurry. The air insufflation unit is connected to the cover above the diaphragm. The discharge valve is connected to the cover below the diaphragm.

The present invention includes: a first sealing portion which has a first entry/exit selectively opened or closed by a first opening/closing valve and a second entry/exit selectively opened or closed by a second opening/closing valve and is configured to seal one end of a housing; a second sealing portion which has a third entry/exit selectively opened or closed by a third opening/closing valve and a fourth entry/exit selectively opened or closed by a fourth opening/closing valve, and is configured to seal the other end of the housing; and a controller which is configured to control the supply of raw water through any one of the first entry/exit and the second entry/exit or control the supply of raw water through any one of the third entry/exit and the fourth entry/exit.

A filter assembly comprises an outer casing, filters and a pipe member connected to first, second and third filters and comprising an inlet flow path and an outlet flow path. The inlet flow path comprises a first inlet flow path connected to the first filter, a second inlet flow path connected to the second filter, a third inlet flow path connected to the third filter, and an inflow member comprising a branch point to allow water to flow in parallel through the first inlet flow path and the second inlet flow path. The outlet flow path comprises a first outlet flow path for water to be discharged from the first filter, and a second outlet flow path for water to be discharged from the second filter. Water discharged from the first outlet flow path from the second outlet flow path is guided and introduced into the third inlet flow path.

A water intake and pretreatment system (10) comprising an inlet for delivering water from a natural source to a reservoir (12); said inlet to reservoir having a net screen (16) to prevent entry of organisms above a predetermined size and including a one-way gate (30) to allow organisms to exit the reservoir; said reservoir further comprising a granular filter media for water and algae filtration; and a drainage layer for removal of filtered water from the granular filter media to a drainage outlet. A local backwashing apparatus (40) is included for localized backwashing of the granular filter media.

An apparatus for manufacturing hydrogen-containing water is disclosed. In one aspect, the apparatus includes a container part formed with a upper space and a lower space positioned vertically from each other around a connecting passage therein. The apparatus also includes an ion exchange membrane configured to close the connecting passage and an electrolytic part comprising a cathode disposed on the upper space and a cathode an anode disposed on the lower space. The apparatus further includes a handle part configured to couple to the container part and to provide a supply passage for water to be supplied to the lower space and a discharge passage to discharge oxygen and ozone generated from the lower space.

A reverse osmosis apparatus for a seawater desalination system is provided. The reverse osmosis apparatus includes: a barrel in which a plurality of reverse osmosis membrane units with a reverse osmosis membrane wrapped in each reverse osmosis membrane unit are arranged; an inflow and outflow portion provided at a first end of the barrel and connected to a seawater inlet a high salinity water outlet; a partition wall configured to partition an inner space of the inflow and outflow portion into a first stage and a second stage; and a transport space portion provided in a second end of the barrel and configured to guide water being moved from a plurality of reverse osmosis membrane units arranged in the first stage to move to a plurality of reverse osmosis membrane units arranged at the second stage, wherein part of seawater fed to the inflow and outflow portion is fed around the tubes in the barrel and insulates the plurality of reverse osmosis membrane units in the barrel from external high temperature while being moved, and flows into the transport space portion.

A water purifying apparatus including a head having a water inlet portion and a water outlet portion; a shaft provided in the head and rotatably mounted between the water inlet portion and the water outlet portion; a bypass flow path passing through a circumference of the shaft, and communicating the water inlet portion with the water outlet portion according to rotation of the shaft; a filter detachably mounted to the head, and having a filter inserting portion in which the shaft is inserted when being mounted on the head; and a filtering flow path in which an inlet port and an outlet port are formed on the circumference of the shaft in a direction intersecting the bypass flow path, and communicated between the filter, the water inlet portion and the water outlet portion with each other according to the rotation of the shaft.

A purification device comprises a main body having an opening in a front-face thereof; a rotator disposed in the opening to be rotatably mounted on the main body; a manipulation structure spaced from and above the rotator and rotatably connected to a top face of the main body, the manipulation structure protruding forward of the main body; and a water-outlet including; a first cover fixed to the rotator through the opening, the first cover protruding forward of the main body, and a top of the first cover being connected to a bottom of the manipulation structure; a second cover vertically movable while being held in contact with the first cover; and a nozzle on a bottom of the second cover; wherein when the second cover rises to a highest level, a top of the second cover is located in a space between the rotator and the manipulation structure.