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.

A method of operating a dual reverse osmosis/pressure retarded osmosis plant, including when electricity costs less than a first predetermined price, moderate salinity water is pumped into the first portion of a pressure vessel having first and second portions separated by a water permeable/salt impermeable osmotic membrane to yield desalinated permeate in the second portion and brine in the first portion. Further, when electricity costs greater than the first predetermined price, low salinity water is pumped into the second portion and brine is pumped into the first portion to yield pressurized moderate salinity water in the second portion which is run through an energy recovery device to generate electricity. The salinity of the low salinity water is lower than the salinity of the moderate salinity water, and the salinity of the moderate salinity water is lower than the salinity of the brine.

A method and apparatus for recovering distilled water from wastewater. The method and apparatus evaporates water vapor from a wastewater stream into a moving airflow, collects collecting distilled water from the water vapor, and powers the moving airflow and the collecting distilled water with a thermoelectric generator. The apparatus includes a self-regenerative distillation unit, with an evaporating channel, a condensing channel, and a distilled water outlet. The thermoelectric generator includes a hot shoe side in combination with the wastewater stream, and a cold shoe side in combination with the distilled water outlet. The thermoelectric generator powers a fan or blower connected to the evaporating channel and/or a water pump connected to the distilled water outlet.

A method for remediating wastewater formed by water and per- and poly-fluoroalkyl substances (PFAS) using a wastewater treatment system that includes a collecting unit, a dewatering unit, a drying unit, and a baking unit. Wastewater provided to the collecting unit is dosed by adding a compound to the wastewater in an amount that is sufficient to cause the PFAS to separate from the water and to form a sludge. The sludge is dewatered with the dewatering from a first dryness level a second dryness level. The dewatered sludge is then dried in the drying unit from the first dryness level to a third dryness level. The dried sludge is then baked at a sufficiently high enough temperature that chemical bonds of at least a portion of the PFAS is destroyed.

A method for quickly converting organic waste into energy, including the following steps of S1, performing anaerobic fermentation on organic waste to convert macromolecular organic matter in the organic waste into soluble small molecular organic matter to obtain fermentation liquid; S2, performing solid-liquid separation on the fermentation liquid to obtain a solid-phase part and a liquid-phase part, respectively; and S3, disposing or reusing the solid-phase part as residues, and enabling the liquid-phase part to enter a flow-catalyzed fuel cell to convert organic matter in the liquid-phase part into electrical energy. The present application can quickly and efficiently convert the organic waste into electrical energy.

An ion exchange system includes an ion exchange column filled with ion exchange media and a passive cooling system. The passive cooling system includes a working fluid that transfers heat away from the ion exchange column. In one embodiment, the working fluid is in a closed system. In another embodiment, the passive cooling system includes a heat pipe. In yet another embodiment, the ion exchange system is used to separate radionuclides, such as Cs-137 from a liquid waste stream.

A total biological count associated with treated water produced by a wastewater treatment system may be monitored online in a decentralized non-potable water system. Preventative and/or corrective action can be taken in response to a deviation from a predetermined threshold level.

Presented herein is a voltaic cell containing a biofilm for facilitating energy conversion in a bioelectrochemical energy conversion cell where the biofilm includes one or more microbial populations.

The present invention describes an automated, transportable and energy-efficient with a hybrid power capacity wastewater treatment facility that allows for the disinfection of contaminated sanitation wastewater in order to preserve the environment and provide a greater availability of this resource and its reuse. The facility described in the present invention allows to carry out a process for water treatment in five stages based in equalization, oxidation sedimentation, disinfection and filtration. Moreover, it has a photovoltaic feeding system and a night lighting system that allows the operation of the facility in a hybrid way during the day and the night, as well as a structure that allows its easy transportation. Finally, the facility has an automated system comprised by a control panel that allows to manage and monitor every operational condition of it, that integrates and sends all processed programmable information to a programmable logic controller.

An aeration apparatus for aerating water discharged from a hydraulic turbine includes: a manifold disposed within a crown of a runner of the hydraulic turbine; a plurality of radial pipes extending radially from an outer perimeter of the manifold and in fluid communication with the manifold; and one or more air injectors having a first end disposed within an aeration pipe, each of the one or more air injectors having a second end extending into a nozzle at a first end of one of the radial pipes. Rotation of the aeration apparatus resulting from rotation of the runner causes pumping of water from the manifold through the radial pipes past the one or more air injectors, and water flowing past the one or more air injectors causes air to become entrained in the water. The radial pipes discharge the water and entrained air from the aeration apparatus.