A compact, portable system and process separates dissolved and suspended solids from water containing high levels of those solids. Gas flotation is used with and oxidant as an initial stage. The resulting foam is dewatered in a fluid conveyance, with the gas being recycled to the flotation column, the foam sent to a holding tank and the water passed through one of a number of filtration vessels having granular filter media. As at least one filtration vessel is kept in operation filtering, another filtration vessel can be backwashed when the flow therethrough is diminished of the fluid level inside rises. Treated water is used for backwashing and provided to a collection conduit.

The invention provides methods and compositions for reducing the amount of water required in an industrial process, especially a bottling process such as beer or beverage manufacturing. The method comprising the steps of: collecting water used to rinse cleaned and/or dirty recycled bottles, spraying the collected water at a food contacting piece of equipment as part of a CIP rinse, and passing the CIP second rinse water into a cooling tower as make-up water. The method allows for the re-use of water already in the system but by being careful where each water stream goes the water does not accumulate contaminants that would damage the cooling tower or foul the bottled product or vessel that is cleaned by CIP method.

A water production system with a thermal separation device that defines a cold region and a hot region, a fluid-air heat exchanger located remotely from the thermal separation device and exposed to air, and a fluid circulation loop that thermally connects the cold region of the thermal separation device to the fluid-air heat exchanger so as to cool the fluid-air heat exchanger and condense water from ambient air to produce water pure enough so that with further treatment it can be made potable. Also disclosed are filtration and dispensing features that are appropriate for a potable water supply.

The invention relates to a rapid flotation device, in particular using dissolved air, for treating water laden with suspended matter (MES). The device comprises a mixing area (B) separated from a flotation area (C) by a wall (n) above which the liquid to be treated passes from the mixing area. The bottom portion of the flotation area comprises: a perforated floor (1) located above an apron (R), a floated-water discharge being provided under the floor and leading to an outlet system (3); and at least two separate channels (2) which are oriented in the direction of flow of the water and are provided under the floor (1), and under optional structures (w) extending from the floor, to a point upstream of the outlet system (3). The downstream end (2.1) of the channels is open and located above the floor level, and a discharge means (V) is provided, for each channel, at the end of the downstream bottom portion of said channel.

Some implementations can include method and system to collect and remove micro plastics from a water environment or ecosystem.

A system and method for backwashing a sand filter in a wastewater treatment system. In one aspect, the invention can be a system for backwashing a sand filter comprising: a sand filter configured to remove solids from an untreated wastewater; a container storing chlorine fluidly coupled to the sand filter by a chlorine supply manifold; a flow control mechanism positioned on the chlorine supply manifold between the container and the sand filter, the flow control mechanism alterable between a first position whereby chlorine cannot flow from the container to the sand filter and a second position whereby chlorine flows from the container to the sand filter, the flow control mechanism being biased into the first position; and a processor operably coupled to the flow control mechanism and configured to automatically actuate the flow control mechanism into the second position upon detecting that the sand filter is being backwashed.

A method of treating a liquid by creating nanobubbles of a desired gas within a target liquid and allowing the desired gas to react with a target component of the target liquid. The desired gas can be selected to be reactive with the target component, and a desired liquid can be formed after the desired gas reacts with the target component.

A wastewater purification system that uses mechanical and chemical processes to separate contaminants from municipal and other sanitary wastewater, concentrates the resulting sludge for disposal, and purifies the resulting product water for reuse as irrigation water, potable water or for disposal. The wastewater purification system can be scaled from a mobile system mounted on a skid or a tracker trailer to a large municipal wastewater treatment system. The wastewater purification system can include a hydrocyclone feeding a flotation tank. Flocculant is added upstream from the hydrocyclone after air injection by a Venturi air injector or similar device. Coagulant is added before the air injection. A dose of flocculant is added after the hydrocyclone within the vortex of the hydrocyclone and before the wastewater exits near the top of the flotation tank.

A wastewater purification system that uses mechanical and chemical processes to separate contaminants from municipal and other sanitary wastewater, concentrates the resulting sludge for disposal, and purifies the resulting product water for reuse as irrigation water, potable water or for disposal. The wastewater purification system can be scaled from a mobile system mounted on a skid or a tracker trailer to a large municipal wastewater treatment system. The wastewater purification system can include a hydrocyclone feeding a flotation tank. Flocculant is added upstream from the hydrocyclone after air injection by a Venturi air injector or similar device. Coagulant is added before the air injection. A dose of flocculant is added after the hydrocyclone within the vortex of the hydrocyclone and before the wastewater exits near the top of the flotation tank.

A system and method for processing interface emulsion, water, and solids contained within a separator vessel that comprises the steps of continually extracting those components from the vessel and then passing them through a gas flotation cell. The cell, which is preferably a vertical induced gas flotation cell, separates the oil and water contained in the interface emulsion and discharges recovered oil from an upper portion of the cell and treated water from a bottom portion of the cell. The recovered oil and treated water may be further processed and recycled to the vessel or sent elsewhere. The treated water may also be recycled to the cell or sent to a process sewer. Fuel gas residing in an upper portion of the cell may be cooled and passed through a splitter. All the steps of occur in a closed system with no air emissions.