A mobile water purification system having a trailer, a pretreatment subsystem having a cyclonic separator, a filtering subsystem fluidly connected with the pretreatment subsystem, the filtering subsystem having at least one bedded filter; a reverse osmosis subsystem fluidly connected with the filtering subsystem, the reverse osmosis subsystem having a waste output and a product output; a collection tank fluidly connected with and downstream of the reverse osmosis subsystem; a distribution subsystem fluidly connected with and downstream of the collection tank; a source water inlet mounted to the exterior and fluidly connected to the pretreatment inlet, the source water inlet outside of the at-least partially enclosed space; and a discharge water outlet mounted to the plurality of sidewalls and fluidly connected to the pressure tank, the discharge water outlet having an outlet opening outside of the at least partially-enclosed space.

A method includes producing a first blended low salinity injection water for injection into at least one injection well that penetrates a first region of an oil-bearing reservoir and producing a second blended low salinity injection water for injection into at least one injection well that penetrates a second region of an oil-bearing reservoir. The reservoir rock of the first and second regions has first and second rock compositions, respectively, that present different risks of formation damage. The first and second blended low salinity injection waters comprise variable amounts of nanofiltration permeate and reverse osmosis permeate. The compositions of the first and second blended low salinity injection waters are maintained within first and second predetermined operating envelopes, respectively, that balance improving enhanced oil recovery from the first and second regions while reducing formation damage upon injecting the first and second blended low salinity injection waters into the oil-bearing reservoir.

Systems and methods for electrolytic spa sanitation are provided which control electrodes in a manner that extends the use of electrodes, reducing the frequency of replacement of electrodes. The system also incorporates electrodes that can be easily replaced by a user, further reducing the need to maintenance by trained service personnel. Systems and methods use measurements from ORP, pH, and temperature sensors to determine the amount of sanitizer necessary to be produced from the electrodes. The electrodes are capable or acting as either an anode or a cathode.

According to one or more embodiments, sulfate ions may be removed from seawater to form an injection fluid by a method including passing the seawater and formation water to a mixing tank. The seawater may comprise sulfate ions. The formation water may comprise barium ions. The seawater and formation water may be passed to the mixing tank in a ratio determined by a computerized geochemical model. The method may further include mixing the seawater and formation water to form a mixed fluid and passing the mixed fluid to a clarifier, where a barium sulfate precipitate may be formed and at least a portion of the barium sulfate precipitate may be separated from the mixed fluid. The method may further include passing the mixed fluid to a microfiltration system, where at least a portion of the barium sulfate precipitate may be removed from the mixed fluid to form an injection fluid.

Unwanted material in water, such as Legionella and scale, may be treated using a combination of technologies. Components of each technology may be controlled using a databus, such as an Internet-of-things (IoT) databus. An additional advantage of the treatment technologies is an increase in the efficiency of heat transfer components, such as cooling towers, and a related reduction in carbon footprint.

An electrochlorination system comprises a source of feed fluid, a product fluid outlet, and a plurality of electrochemical cells connected fluidically between the source of feed fluid and the product fluid outlet. The system is configured to operate at least one of the plurality of electrochemical cells at one of a first current density or a first flow rate, and to operate another of the plurality of electrochemical cells at a second current density or second flow rate different from the respective first current density or first flow rate.

According to one or more embodiments, sulfate ions may be removed from seawater to form an injection fluid by a method including passing the seawater and formation water to a mixing tank. The seawater may comprise sulfate ions. The formation water may comprise barium ions. The seawater and formation water may be passed to the mixing tank in a ratio determined by a computerized geochemical model. The method may further include mixing the seawater and formation water to form a mixed fluid and passing the mixed fluid to a clarifier, where a barium sulfate precipitate may be formed and at least a portion of the barium sulfate precipitate may be separated from the mixed fluid. The method may further include passing the mixed fluid to a microfiltration system, where at least a portion of the barium sulfate precipitate may be removed from the mixed fluid to form an injection fluid.

The present disclosure belongs to the field of environmental protection and relates to a method for remediating groundwater chlorophenols organic contamination. The method includes determining a location of a contamination source; setting up an injection well based on the location of the contamination source; and injecting a remediation reagent into groundwater in a to-be-remediated region through the injection well so as to degrade chlorophenols organic contamination in the groundwater in the to-be-remediated region.

A mobile water purification system having a trailer, a pretreatment subsystem having a cyclonic separator, a filtering subsystem fluidly connected with the pretreatment subsystem, the filtering subsystem having at least one bedded filter; a reverse osmosis subsystem fluidly connected with the filtering subsystem, the reverse osmosis subsystem having a waste output and a product output; a collection tank fluidly connected with and downstream of the reverse osmosis subsystem; a distribution subsystem fluidly connected with and downstream of the collection tank; a source water inlet mounted to the exterior and fluidly connected to the pretreatment inlet, the source water inlet outside of the at-least partially enclosed space; and a discharge water outlet mounted to the plurality of sidewalls and fluidly connected to the pressure tank, the discharge water outlet having an outlet opening outside of the at least partially-enclosed space.

An electrochlorination process includes treating water from a source of water in an advanced water conditioning system that removes at least a portion of anions and cations from the water and produces demineralized water, blending the demineralized water with sodium chloride to form a brine solution, and treating the brine solution in an electrolyzer to form a disinfection solution including sodium hypochlorite having a concentration of chlorate of less than 0.25 mg/L.