The present disclosure provides a drinking water purification system with a backwashable filter cartridge and a nanofiltration system. The drinking water purification system includes a backwashable pre-filtration unit, a nanofiltration unit and a cleaning unit. The backwashable pre-filtration unit is provided with a backwashable filter cartridge. The nanofiltration unit is provided with a nanofiltration filter cartridge. A water outflow side of the backwashable filter cartridge is connected to a water inflow side of the nanofiltration filter cartridge. The cleaning unit is connected to the water outflow side of the backwashable filter cartridge.

A brushless system for washing a large flat object having a length greater than a width, the width defining a cross-section, said system including a frame defining a longitudinal path and including a first end; a second end; and a wash chamber positioned between said first and second ends. A transport system secured to the frame and adapted to transport said object positioned thereon; said transport system including a plurality of idle rollers located along said longitudinal path and adapted to support said object as it travels along the longitudinal path; a drive system to provide mechanical transport motion to said object along the longitudinal path from said first end of the frame to said second end of the frame, said drive system being positioned outside the wash chamber; and first end including a loading mechanism to position the object on at least one of the plurality of rollers, and said second end including an unloading mechanism to remove the object from at least one of the plurality of rollers; said wash chamber including an entrance located proximate the first end and an exit located proximate the second end, and a series of high pressure water jets positioned within the wash chamber and adapted to spray the entire surface of said object when such transits through the washing chamber. The entire cross-section of said object is untouched by the system at at least one point during its transit through the wash chamber.

A water treatment system comprises a source of water including one or more contaminants, an electrocoagulation cell including a housing defining a fluid flow conduit, an anode disposed within the fluid flow conduit, and a cathode disposed within the fluid flow conduit, the housing including an inlet fluidly connectable to the source of water and an outlet, a solids/liquid separation system having an inlet fluidly connectable to the outlet of the housing of the electrocoagulation cell, a solids-rich outlet, and a solids-lean outlet, and a ballast feed system configured to deliver a ballast to the solids/liquid separation system.

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.

The present invention relates to a water purification housing capable of purifying water and a rainwater purification system using the same. The water purification housing according to the present invention comprises a means that can filter treated water by filling filter media in a housing body and then passing the treated water through the filter media and a mean that can remove residue caught in the filter media as a result of the use of the filter media by collecting the residue in a sediment discharge container positioned at a bottom portion of the housing body. The rainwater purification system according to the present invention comprises a means that connects and installs several water purification housings and an additional filtration means including fiber filter and UV lamp which can filter materials that cannot be filtered only by the filter media at the end thereof.

An automatic swimming pool cleaner (APC) may be used as a primary or sole water-circulation system of a pool or spa. The pool or spa hence need not employ dedicated water-circulation equipment, unlike conventional such vessels. In some cases, the APC includes a water treatment system for dispensing one or more chemicals for sanitizing (or otherwise treating) pool water.

A disinfection system for treating water. In a specific example, the system treats water prior to its upload to an aircraft or other passenger transportation vehicle. One or more replaceable filters are positioned within a filter chamber housing in order to expose water flowing through the system to filtration treatment.

The present invention provides stretchable laminates with a flat appearance on the visible surface. The laminates comprise a textile layer, a functional layer, and a plurality of elastic fibers. The plurality of elastic fibers are in a substantially parallel arrangement and the internal distance between adjacent fibers does not exceed the maximum fiber spacing, which depends on laminate thickness in a stretched state. Also provided are garments and footwear comprising the stretchable laminates and methods of producing the stretchable laminates.

Particle removal systems and methods are provided. The systems and methods utilize flexible wires to collect solid particles and remove them from a carrier liquid in which they are suspended. The solid particles, the wires, or both the solid particles and the wires are coated by a liquid. As the carrier liquid containing the particles passes through the particle removal system, the liquid coatings on the solid particles and/or the flexible wires selectively adhere the solid particles to the flexible wires.

An oil, water, and solid impurity separation device capable of realizing crude oil gathering and transferring is provided, which includes: a centrifuge including a liquid mixing inlet communicated to an inside thereof, and pure crude oil outlets disposed at two sides of the liquid mixing inlet and used for injecting a filtered liquid; a strainer, an input end of which is connected with one pure crude oil outlet through a pipeline, a vacuum power assembly for providing power is arranged on the pipeline; a filtering assembly, an input end of which is connected with an output end of the strainer, two individual branches are formed by an output part of the filtering assembly and an oil discharging assembly, as well as the output part of the filtering assembly and an impurity discharging assembly, respectively; one branch is an oil outlet, and another branch is an impurity outlet.