An apparatus for treating water is disclosed. The apparatus comprises a feed tank for receiving water. The feed tank is coupled to a plurality of RF chambers. Each of the RF chambers comprises an inlet and an outlet. The outlet is coupled to a treated water effluent manifold. Further, each RF chamber is coupled to a vacuum manifold. Each RF chamber comprises a recirculation pipe to pump water back into the feed tank. The RF chamber comprises a RF system used for bombarding RF energy at predefined frequencies on the water passing in the chamber tubes in order to liberate chlorine isotope. Subsequently, the water is sent through the outlet to the treated water effluent manifold.

The invention provides a method for preparing drinking weak alkali water and strontium-rich electrolyte raw water from distilled water obtained in the process of producing salt from well and mine brine, which comprises procedures of pressure reduction treatment, primary filtration, membrane separation treatment, activated carbon adsorption treatment, secondary filtration treatment, sterilization and disinfection treatment and the like on the salt-making distilled water in sequence so as to remove insoluble solid impurities, sulfides, microorganisms and other substances in the raw water, and separate or enrich ions, thereby preparing the weak alkali water suitable for drinking and the strontium-rich electrolyte raw water capable of being used for functional beverage production. The method provided by the invention can not only realize the comprehensive utilization of resources, but also obtain new products, significantly improving the economical efficiency of the process.

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.

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.

The sub-ambient solar desalination system includes a solar pond and a pressure reducing structure. The solar pond is adapted for receiving saltwater and heating the saltwater through direct exposure to solar radiation at atmospheric pressure. The pressure reducing structure is in fluid communication with the solar pond for receiving heated saltwater therefrom. The pressure reducing structure is configured such that pressure of the heated saltwater within a central portion of the pressure reducing structure is at sufficiently reduced sub-ambient pressure to undergo a phase change to produce pure water vapor and a concentrated brine solution. The pressure reducing structure has a vapor outlet for releasing the pure water vapor, which is collected in a fresh water tank and condensed into pure liquid water. The solar pond is in fluid communication with an outlet portion of the pressure reducing structure for recycling the concentrated brine solution back to the solar pond.

Apparatus is disclosed for separating and concentrating one or more PFAS compounds from contaminated water or wastewater using a combination of membrane filtration and foam fractionation. Water is processed through a membrane filter to produce a permeate and a reject using a Reverse Osmosis or a Nanofiltration membrane where the permeate produced is suitable for potable applications and the reject produced is sent to a foam fractionator for further treatment. Wastewater is processed through a membrane filter to produce a permeate and a reject using an Ultrafiltration or Microfiltration membrane where the permeate produced is sent to a foam fractionator for further treatment and the reject is contained within a wastewater treatment plant as activated sludge. Membrane reject or permeate sent to a foam fractionator is then processed to remove any surface active contaminates (PFAS) by injecting air to generate a foam that can be collected and removed for storage producing a clean effluent that is suitable for environmental discharge and a foam concentrated with PFAS.

A method of controlling the water level in ground in which drainage pipes have been laid, said method comprising: a) providing the ground with water passing through the drainage pipes in a natural way and/or by active intervention using a control system, b) creating an underpressure or overpressure of water and/or air in the drainage pipes by means of the control system, thereby causing water or air to be extracted from or supplied to the soil via the drainage pipes, and c) programming the programmable control system in such a manner that the control system determines the points in time, durations, volumes and/or order of the water supply to the drainage pipes and of the generation of an underpressure or overpressure of water and/or air.

In the invention, a sludge treatment technology adopting flocculation-horizontal drain board vacuum preloading combining multi-layer sealed geotextile bag is disclosed, which comprises sealed geotextile bags and a geomembrane for sludge grouting and filling. The sealed geotextile bag and the geomembrane have two splicing modes, one is to place a layer of geomembrane inside and close to the inner side of the sealed geomembrane; the other is to wrap and seal the outside of the geotextile with geomembrane. A horizontal drainage system for vacuum drainage is set inside the sealed geotextile bag, with one end of the horizontal drain board being connected to a vacuum drainage pipe, and the drainage pipe passes through the sealed geotextile bag via a flange and is connected to the vacuum pump used for pumping the water in the sealed geotextile bag. Sludge includes engineering waste mud, river sludge and industrial sludge. A horizontal drainage system is added inside the sealed geotextile bag and combining with flocculant for sludge dewatering, and the sealed geotextile bag can be stacked in several layers to form a stacking effect on the lower structure through the self weight of the upper layer, thus making the drainage effect faster and the dewatering efficiency higher.

This disclosure provides an integrated system and method for producing purified water, hydrogen, and oxygen from contaminated water. The contaminated water may be derived from regolith-based resources on the moon, Mars, near-Earth asteroids, or other destination in outer space. The integrated system and method utilize a cold trap to receive the contaminated water in a vapor phase and selectively freeze out water from one or more volatiles. A heat source increases temperature in the cold trap to vaporize the frozen contaminated water to produce a gas stream of water vapor and volatiles. A chemical scrubber may remove one or more volatiles. The integrated system and method utilize ionomer membrane technology to separate the water vapor from remaining volatiles. The water vapor is delivered for crew use or delivered to an electrolyzer to produce hydrogen and oxygen.

A system and process for decontaminating a bio-contaminated wastewater fluid as from a slaughterhouse or similar facility. The system and process recovers purified vapor/steam through a decontamination unit having a plurality of alternating rotating trays and fixed baffles in a processing vessel producing separate purified and contaminant streams. One or more filter/strainer units are disposed in parallel before the decontamination unit, and may be used alternately while the other is cleaned. A rotating shaft connected to the rotating trays may also connected to an electrical generator to provide electricity for circuits and controls in the system.