The present invention relates to a residential home water filter system and method. The water filter system comprises a filter stage, a water purification stage, a water storage stage, and a back-up water softening stage, to deliver filtered and purified water to consumers when needed. Water from a pressurized water source first flows through filter 16 and then to a first junction 18 to a reverse osmosis system 22 when a pump 24 is activated or to an ion exchange water softener 20 when the pump 24 is deactivated. The filtered and purified water is then stored in tank 26.

A water treatment system centrally communicates and controls one or more water treatment devices to regulate the use of the one or more water treatment devices. The water treatment system is configured to enable a localized, on-demand supply of purified water throughout a building or a network of buildings. The water treatment system may control a degree of purity (e.g., water hardness or concentration of dissolved salts) via mixing of purified and unpurified water streams in a controllable ratio (e.g., via one or more controllable valves or one or more tunable water softening units).

A system comprising an agitation and flocculation system and a particulate filter capture system, and optionally a feedback system and/or a water softening. The agitation and flocculation system configured to receive a contaminated aqueous stream and an anhydrite quantity, and comprising means for agitating the aqueous stream and a means for mixing the aqueous stream with the anhydrite, such that a precipitate of calcium sulfate hydrate+contaminant complexes is formed. Also, a system comprising a fixed-bed type cross-flow system and a particulate filter capture system, and a corresponding method of removing per- and polyfluorinated alkyl substances from the contaminated aqueous stream. The method comprising the acts of: providing an anhydrite quantity; contacting and agitating the anhydrite quantity with a contaminated aqueous stream; and collecting the precipitate of calcium sulfate hydrate+contaminant complexes formed from the aqueous stream.

This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead.

This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead.

The present invention addresses to a laser blasting pipe for heating a scale removal treatment to be descended by electric cable, and a recirculation system with the objective of heating the scale removal solution, inside the production string during the time the reaction is taking place, in order to guarantee its efficiency. The laser blast pipe is a device similar to a metallic cylinder that can travel through the interior of a production string, being descended by gravity itself, and ascended by the action of the cable, being able to recirculate and heat the fluid. This heating would have the function of compensating the heat loss of the removal solution due to the heat exchange of the riser with the seabed, and maintaining the temperature of the reaction inside the production line in an optimal range of yield, thus aiming at increasing the reaction efficiency and the reduction of the time required for the removal of scale in the production string of the well.

The physical water treatment device, in particular in a flexible water inlet (1), comprises at least one pair of electrodes (2) for water galvanization and at least one means for inserting and fixing the electrodes (2). The means for inserting and fixing the electrodes (2) together with the electrodes (2) form an integral body (3), the resulting shape of which is adapted for the insertion into the flexible water inlet (1). The integral body (3) completely blocks the flexible water inlet (1) and is hollow so that the water flowing through the flexible inlet (1) flows through the electrodes (2) of the integral body (3). The electrodes (2) form a flow-through galvanization system in the integral body (3).

The physical water treatment device, in particular in a flexible water inlet (1), comprises at least one pair of electrodes (2) for water galvanization and at least one means for inserting and fixing the electrodes (2). The means for inserting and fixing the electrodes (2) together with the electrodes (2) form an integral body (3), the resulting shape of which is adapted for the insertion into the flexible water inlet (1). The integral body (3) completely blocks the flexible water inlet (1) and is hollow so that the water flowing through the flexible inlet (1) flows through the electrodes (2) of the integral body (3). The electrodes (2) form a flow-through galvanization system in the integral body (3).

A wastewater treatment equipment and a treatment method of a wastewater are provided. The wastewater treatment equipment includes: a microfiltration unit, configured to receive and filter a wastewater to obtain a solution; a membrane salt separation unit, configured to receive the solution and separate monovalent ions and multivalent ions from the solution to obtain a first solution including the monovalent ions and a second solution including the multivalent ions; a first evaporative crystallization unit, configured to crystallize the first solution to form a monovalent salt; and a second evaporative crystallization unit, configured to crystallize the second solution to form a mixed salt; the microfiltration unit is connected to the membrane salt separation unit, and the first evaporative crystallization unit and the second evaporative crystallization unit are both directly connected to the membrane salt separation unit, the wastewater treatment equipment can achieve the standard discharge of wastewater.

A method provides for selecting a scale-dissolving agent suitable for components of the scale. The method for selecting the scale-dissolving agent includes a step of determining coordinates of specific physical properties of scale to be removed based on Hansen solubility parameter and a step of selecting the dissolving agent based on the distance between the coordinates of specific physical properties of scale to be removed and the coordinates of specific physical properties of the dissolving agent. Also provided is a method for removing scale using it.