A water storage tank built for a reverse osmosis water purifying system deploys multi water flow passages of purified water and drainage water, allocated a soft bladder unit receiving purified water encompassed by the waste water in the tank. When the water tank unit is fully filled with water, the water pressure activates the auto-shut-off valve or solenoid valve to stop operation of the reverse osmosis water purifying system. When the dispensing faucet is turned on, the drainage water swells to squeeze the soft bladder unit to deliver the purified water out from the soft bladder unit to the dispensing faucet, and the drainage water flushes the reverse osmosis membrane as well. The technique enables the tank to take the least water pressure resistance to hold water and drain water which results in energy saving and water saving.

An apparatus for treating water or liquids in general, including a reverse osmosis filtration device provided with at least one inlet associated with a line for supplying the liquid to be treated, at least one outlet of the permeate associated with a line for dispensing the treated liquid and at least one concentrate outlet associated with a line for discharging the waste. The particularity of the present invention resides in that it includes, downstream of the filtration device, at least one tank that forms inside it two adjacent chambers with a mutually variable volume, in which one chamber is connected to the delivery line while the other chamber is connected to the discharge line.

Disclosed herein is a modular system for robust, efficient preparation of cell culture media and buffers, comprising a) a tangential flow filtration (TFF) module for initial mixing, dissolution, and pre-filtration of concentrated stock solutions to remove particulates, bacteria, enabling handling of lower quality raw materials; b) optional intermediate holding tanks for temporary storage, sampling, and quality control; c) a final mixing module diluting concentrated, pre-filtered stock solutions before terminal sterile filtration. The multi-step approach with TFF pre-filtration provides smaller equipment footprint, lower capital costs, and continuous/semi-continuous buffer production capability versus traditional batch preparation. Process automation and optimization of intermediate dilution ratios based on TFF process rate enable seamless operation, feeding of multiple staggered bio-reactors, and significant operating cost savings. The invention provides more robust, flexible, and cost-efficient cell culture media and buffer preparation suitable for large-scale bio-processing.

The inventions relate to purifying water and can be used in domestic water purification systems. The claimed filtered water storage unit for the storage device of a water purification system includes a housing, an elastic chamber for filtered water, and a region for pressurizing untreated water. The water purification system includes a reverse osmosis membrane, a clean water discharge pipe, an overflow into a drain, a clean water tap, and a storage device having a filtered water storage unit and a hydro-automatic unit. The outlet of the controlled chamber of a valve is associated with the water pressurizing region in the housing of the water storage unit, and the input of the controlling chamber of a valve is associated with the clean water discharge pipe upstream of the tap, wherein the valve for controlling water pressurization is normally open and the valve for controlling drainage is normally closed.

A water treatment apparatus is disclosed. The water treatment apparatus, according to one embodiment of the present invention, may comprise: a filter unit comprising a reverse osmosis filter for supplying purified water filtered from raw water, and residential water which could not be filtered from raw water; a storage unit connected to the filter unit and comprising a storage member in which purified water is stored, then discharged, and a housing within which the storage member is provided, and through which residential water inflows and outflows; and a flow path changing valve connected to the filter unit and the storage unit, and which allows residential water to outflow from the housing as purified water is stored in the storage member, or allows purified water to be discharged from the storage member as residential water inflows into the housing.

The invention provides an improvement in terms of control and process technology for a method of continuous removal of a component from a liquid mixture using a membrane unit comprising at least one membrane stage. The improvement is that at least some of the overall permeate stream obtained is recycled to the feed vessel and/or beyond the feed vessel but upstream of the conveying device. The presently disclosed method can especially be used for separation of a homogeneously dissolved catalyst from a liquid reaction mixture.

There is provided a system and method for angstrom confinement of trapped ions. The method including: receiving water molecules and ionic compounds in a first reservoir, an angstrom confinement assembly is positioned between the first reservoir and a second reservoir, the angstrom confinement assembly defining angstrom conduits; and repeatedly applying an electric field across a first electrode and a second electrode, the first electrode on a same side of the angstrom confinement assembly as the first reservoir and the second electrode on a same side of the angstrom confinement assembly as the second reservoir, the electric field applied such that, when the electric field is applied, positive ions of the ionic compounds are induced to flow through the angstrom conduits, and wherein, when the electric field is not applied, water molecules flow into the angstrom conduits due to capillary forces to confine the positive ions in the angstrom conduits.

Algae harvesting and cultivating systems and methods for producing high concentrations of algae product with minimal energy. In an embodiment, a dead-end filtration system and method includes at least one tank and a plurality hollow fiber membranes positioned in the at least one tank. An algae medium is pulled through the hollow fiber membranes such that a retentate and a permeate are produced.

The present invention relates to a method and system for reducing water consumption in a membrane dealcoholization process. The system comprises a dealcoholization section and a polishing section, where the polishing section comprises one or more membrane polishing units with recirculation of streams.

A new and innovative power and treated water co-generation system is provided that includes a modified Kalina cycle and a forward osmosis (FO) membrane. The Kalina cycle of the provided system is used for power production, whereas the system's FO process is used for water production. The provided system modifies a typical Kalina cycle to include a more efficient and relatively low-temperature heat source, while still utilizing the same working fluid, which is ammonia-water. The draw solution for the provided system's FO process is also ammonia-water, which is known and efficient for desalination and wastewater treatment. In some aspects, the working fluid of the system may be a specific ammonia-water composition including between 30-95% ammonia. The presently disclosed system combines the Kalina process and the FO process into an improved and innovative heat integration system to minimize energy requirements and enable operation at both small and large scales.