A system and associated method for producing an HOCl solution and an NaOH solution includes a generator operable for producing the HOCl and NaOH solutions utilizing electricity and a mixture of water and brine in an electrolysis cell. The generator includes a mechanical fixed flow restrictor (FFR) operable for controlling at least one of a pH of the HOCl solution and a free available chlorine (FAC) of the HOCl solution. The FFR includes an insert having a longitudinal fluid passageway. The length of the insert and the diameter of the fluid passageway are selected to control the pH of the HOCl solution and/or the FAC of the HOCl solution. The FFR is interchangeable so that the pH of the HOCl solution and/or the FAC of the HOCl solution can be precisely controlled.

A platform for sequestering carbon dioxide using a body of water is described. The platform has a vessel for holding solid metal hydroxide and for exposing the solid metal hydroxide to a flow of water to create a solution of a metal hydroxide having a pH level. The solution containing metal hydroxide is released into the body of water, causing a reaction with the carbon dioxide present in the body of water, thereby producing metal carbonate/bicarbonate, thus sequestering the carbon dioxide. A choice of the metal in the metal hydroxide, a rate of the releasing the solution containing the metal hydroxide into the body of water, and a flow rate of the flow of water so that to substantially maintain the solution containing the metal hydroxide at the pH level that is defined as environmentally safe and not changing chemistry of seawater. A corresponding method is also provided.

Wastewater processing modules that include an interior surface defining an interior volume, one or more inlets configured to receive wastewater into the interior volume, one or more outlets configured to exhaust processed water from the interior volume, one or more flow-deflecting baffles positioned within the interior volume fluidly between the inlet(s) and the outlet(s) and that divide the interior volume into a plurality of fluidly connected sections, and a purification medium at least partially filing the plurality of fluidly connected sections. The flow-deflecting baffle(s) are configured to channel the wastewater to flow along a plurality of circuitous bulk flow paths through the purification medium. The purification medium is configured to sequester contaminants from the wastewater as it flows through the interior volume along the circuitous bulk flow paths to produce the processed water therefrom.

A method of providing sustained odor control in an extended sewer line is disclosed. The method includes measuring at least one parameter of the sewer line including average wastewater volume, flow rate, and retention time and administering a blended composition which includes an immediate release compound and an extended release compound into the sewer line to control concentration of an odorous compound therein. A method of facilitating sustained odor control in an extended sewer line is also disclosed. The method includes providing the blended composition including the immediate release compound and the extended release compound and instructing a user to administer the blended composition to the sewer line control concentration of the odorous compound therein. A system for providing sustained odor control in the extended sewer line including sensors to measure sewer line parameters and a controller to instruct administration of the blended composition is also disclosed.

Biocide can be controllably added to a feed stream for a membrane. In some examples, the feed stream is separated into a primary feed stream and a secondary feed stream, for example, with the secondary feed stream having a lower flow rate than the primary feed stream. The secondary feed stream may be used to monitor and control the addition of the biocide, which is then diluted when the secondary feed stream is combined with the primary feed stream to form a combined stream for delivery to the membrane.

Water or wastewater filtration processes and systems have a plurality of membrane modules, each having filter media therein, the plurality of membrane modules arranged in parallel fluid flow, a main bottom feed conduit, a main top feed conduit, and separate feed conduits fluidly connecting the main bottom feed conduits and the main top feed conduits to respective membrane modules. A main filtrate conduit, and separate filtrate conduits fluidly connect respective membrane modules to the main filtrate conduit. A backwash conduit fluidly connects the main filtrate conduit to respective membrane modules through the main top and bottom feed conduits. A pump having a pump feed conduit and a pump discharge conduit, the pump discharge conduit fluidly connected to the main top and bottom feed conduits, and a plurality of automatically controllable valves positioned in the main top and bottom feed conduits, the main filtrate conduit, the pump discharge conduit, and the backwash conduit, with a controller configured to actuate the plurality of automatically controllable valves to control feed and backwash flows through the membrane modules using pressure developed only by the pump. The pump is preferably operated by a variable-speed prime mover.

The present invention includes: a first sealing portion which has a first entry/exit selectively opened or closed by a first opening/closing valve and a second entry/exit selectively opened or closed by a second opening/closing valve and is configured to seal one end of a housing; a second sealing portion which has a third entry/exit selectively opened or closed by a third opening/closing valve and a fourth entry/exit selectively opened or closed by a fourth opening/closing valve, and is configured to seal the other end of the housing; and a controller which is configured to control the supply of raw water through any one of the first entry/exit and the second entry/exit or control the supply of raw water through any one of the third entry/exit and the fourth entry/exit.

An apparatus for filtering and mineralizing a fluid. The apparatus includes an amount of contaminated fluid located in a reservoir and a cartridge that is located downstream from the reservoir and in fluid communication with it. A filter is in fluid communication with the reservoir and the cartridge. The contaminated fluid is pumped along a pathway from the reservoir to the cartridge so that the contaminated fluid moves through the filter to generate filtered fluid in the cartridge. A pre-determined amount of an additive is associated with the cartridge for adding to the filtered fluid to generate a final fluid with the amount of the additive material.

A water treatment system comprises a source of water including one or more contaminants, an electrocoagulation cell including a housing defining a fluid flow conduit, an anode disposed within the fluid flow conduit, and a cathode disposed within the fluid flow conduit, the housing including an inlet fluidly connectable to the source of water and an outlet, a solids/liquid separation system having an inlet fluidly connectable to the outlet of the housing of the electrocoagulation cell, a solids-rich outlet, and a solids-lean outlet, and a ballast feed system configured to deliver a ballast to the solids/liquid separation system.

A disinfection system for treating water. In a specific example, the system treats water prior to its upload to an aircraft or other passenger transportation vehicle. One or more replaceable filters are positioned within a filter chamber housing in order to expose water flowing through the system to filtration treatment.