The invention relates to technology for processing liquid radioactive waste containing, inter alia, tritium isotopes, which are formed in various nuclear industry plants, and also during decommissioning of such plants. The technical result of the claimed invention consists in simplifying the technological procedure for processing liquid radioactive waste containing, inter alia, tritium isotopes by excluding complicated and lengthy operations associated with testing a concrete mixture produced from deactivated liquid radioactive waste, and also in increasing the ecological safety by reducing the size of areas for storage of the waste produced during the processing of the liquid radioactive waste. The claimed technical result is achieved in that a method for processing liquid radioactive waste containing, inter alia, tritium isotopes involves removing radioactive substances from the liquid radioactive waste so as to produce a low-level waste solution, and introducing a binder into the low-level waste solution produced in order to prepare a concrete mixture which complies with structural, radioecological, and sanitary and hygiene requirements, wherein components that have a negative effect on the technical characteristics of the concrete mixture being produced are removed from the low-level waste solution before the binder is added.

Managed ecosystems, methods for producing managed ecosystems and methods for using managed ecosystems for sequestering carbon dioxide are described herein. Produced water is obtained and purified to sustain a managed ecosystem with saline-tolerant vegetation. The managed ecosystem biologically sequesters carbon dioxide by photosynthetically absorbing carbon dioxide from the atmosphere and by decomposition into a layer of sediment on the ecosystem floor.

The disclosure provides two integrated methods for the production of potable water from seawater or other brackish waters using chemical forced precipitation. The process is closed loop. It recycles process reactants and produces commercially valuable potable water and salts. The technology uses a computer software method of process variable control that maintains the chemical forced precipitation process salt, solvent, and water concentrations as required to optimize water production. The process fortuitously requires less energy than other water production processes and can utilize solar hot water heating or waste heat from other combustion and seawater for heating and cooling energy sources.

An osmotic food production system designed to produce fruits, vegetables, and freshwater from urine or saltwater. In some embodiments the osmotic food production system also produces oxygen. In some embodiments, the osmotic food production system is portable and capable of transporting on a vehicle capable of space travel. Embodiments of the present invention can be used to address the existing problems of food production, waste disposal/utilization, oxygen generation, and water conservation in an efficient way to allow for prolonged space travel or colonization of distant planets and moons.

A cavitator to be used in a gas generator. The cavitator is provided with a cavitator inlet and a cavitator outlet having one or several cavitator channels having a cavitator channel inlet and a cavitator channel outlet. The cavitator channel or channels are further provided with cavitation inducing means, e.g. flow guiding or restricting means, wave shaped channel walls, protrusions and widenings, surface irregularities such as cavitation generating indentations or a combination thereof, for inducing a differentiated pressure within a liquid flowing through the cavitators. The cavitator further having an outer cavitator stator and an inner cavitator rotor arranged to rotate by a liquid flow through the cavitator. The rotation of the inner cavitator rotor will induce a differentiated pressure within the liquid in the cavitator promoting cavitation in the liquid flowing through the cavitator channels. A gas generator including such a cavitator as described herein is also disclosed.

Methods, systems, and apparatuses for recovering water from an aqueous stream containing a solute are disclosed herein. In accordance with an aspect, provided is method comprising receiving an inlet brine stream comprising water and a solute; producing a concentrated brine stream by contacting the inlet brine stream with an ion exchange resin configured to extract water from the inlet brine stream, the ion exchange resin comprising a plurality of pores adapted to receive water molecules; ceasing the contact of the ion exchange resin with the inlet brine stream and the concentrated brine stream; and evaporating at least a portion of the water contained in the ion exchange resin aided by unsaturated air with less than 100% relative humidity using an evaporation unit.

A wastewater processing method includes introducing wastewater into an upper region of a chamber. The chamber remains at substantially atmospheric pressure. A portion of the wastewater in the chamber is vaporized. Flame is introduced into the chamber and provides for the ignition of a volatile organic compound. The vaporized portion of the wastewater is vented to the atmosphere.

An evaporation system for spray evaporating undesired water comprising: a first pump, a container comprising a sump, a second pump, a spray manifold comprising a spray nozzle, a packing system disposed within the container, a third pump, and an air system comprising an air blower and an air preheater is disclosed. An outlet of a water inlet is connected to an inlet of the first pump. A first portion of a ceiling of the container is constituted by a demister element such that the first portion of the ceiling is entirely configured as an outlet for evaporated water. A second portion of the ceiling is adjacent to an upper edge of a wall of the container. An outlet of the first pump is connected to an inlet of the container. An inlet of a draw line is disposed in the sump; and an outlet of the draw line is connected to an inlet of the second pump. An outlet of the second pump is connected to an inlet of the spray manifold. The spray nozzle discharges water droplets onto the packing system. An inlet of the third pump is connected to an outlet of the sump. An outlet of the third pump is connected to a discharge outlet. The air system is disposed through the wall of the container; and the air system discharges air flow counter to and/or crossways to the water droplets from the spray nozzle. A method of using the evaporation system is also disclosed.

Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water can be concentrated and prepared for destruction in a pretreatment phase. Following annihilation of the PFAS in supercritical conditions to levels below 5 parts per trillion (ppt), the water effluent can be used to recover heat, returned to sub-critical conditions, and then released back into the environment.

Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water can be concentrated and prepared for destruction in a pretreatment phase. Following annihilation of the PFAS in supercritical conditions to levels below 5 parts per trillion (ppt), the water effluent can be used to recover heat, returned to sub-critical conditions, and then released back into the environment.