A process for the treatment of wastewater (S1) formed during the production of starches, in particular of chemically modified starches, and which contains dissolved salts and organic compounds, in which process it is proposed that the wastewater (S1) or pretreated wastewater (S1) containing substantially the dissolved salts and the organic compounds of the wastewater (S1) is subjected to a membrane separation process in which a separation of the wastewater (S1) supplied to the membrane separation process into a first volume flow (S3) with a higher concentration of dissolved salts in relation to the supplied wastewater (S1) and a second volume flow (S2) with a reduced concentration of dissolved salts in relation to the supplied wastewater (S1) is performed, wherein the first volume flow (S3) is subjected to thermal treatment for the separation of the dissolved salts and of a third volume flow (S9) which contains a fraction of the organic compounds of the wastewater (S1). By means of the invention, a process for the treatment of the wastewater (S1) from the production of modified starches with recovery of utilizable contents is provided.

A method for treating waste water containing ammonia comprising the steps of: i) passing the waste water as a feed solution through a first RO membrane (24) to produce a first permeate stream (30) and a first reject stream (32), ii) adjusting the pH of the first reject stream (32) to >9, iii) passing the first reject stream (32) through a second RO membrane (26) to produce a second permeate stream (36) containing ammonia and a second reject stream (38), and iv) passing at least a portion of the second permeate stream (36) to a cooling tower (12) to evaporate at least a portion of the ammonia.

This disclosure provides water processing apparatuses, systems, and methods for recovering purified water and concentrated brine from wastewater. The water processing apparatuses, systems, and methods utilize ionomer membrane technology to separate water vapor from volatiles of a wastewater stream. The wastewater stream is evaporated into a gas stream including water vapor and volatiles of the wastewater stream in an evaporation container. The gas stream is delivered to a water separation module spatially separated from and fluidly coupled to the evaporation container. The water vapor of the gas stream is separated out in the water separation module while the volatiles are rejected. The water vapor can be collected into purified water while concentrated brine from the wastewater stream is left behind in the evaporation container.

This disclosure provides water processing apparatuses, systems, and methods for recovering purified water and concentrated brine from wastewater. The water processing apparatuses, systems, and methods utilize ionomer membrane technology to separate water vapor from volatiles of a wastewater stream. The wastewater stream is evaporated into a gas stream including water vapor and volatiles of the wastewater stream in an evaporation container. The gas stream is delivered to a water separation module spatially separated from and fluidly coupled to the evaporation container. The water vapor of the gas stream is separated out in the water separation module while the volatiles are rejected. The water vapor can be collected into purified water while concentrated brine from the wastewater stream is left behind in the evaporation container.

The present invention relates to the extraction of lithium from liquid resources, such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

A thermal management loop system may include an accumulator, an evaporator in fluid receiving communication with the accumulator, a condenser in fluid receiving communication with the evaporator, and a membrane separator in fluid receiving communication with the condenser. Gas exiting the membrane separator may recirculate back to the condenser and liquid exiting the membrane separator may flow to the accumulator. The thermal management loop system may be a dual-mode system and thus may be operable in a powered-pump mode or a passive-capillary mode.

This disclosure provides water processing apparatuses, systems, and methods for recovering purified water and concentrated brine from wastewater. The water processing apparatuses, systems, and methods utilize ionomer membrane technology to separate water vapor from volatiles of a wastewater stream. The wastewater stream is evaporated into a gas stream including water vapor and volatiles of the wastewater stream in an evaporation container. The gas stream is delivered to a water separation module spatially separated from and fluidly coupled to the evaporation container. The water vapor of the gas stream is separated out in the water separation module while the volatiles are rejected. The water vapor can be collected into purified water while concentrated brine from the wastewater stream is left behind in the evaporation container.

A process to remove transition metals from waste water. The process includes the steps of passing waste water to a first pH resin bed, monitoring the effluent from the first resin bed, and adjusting pH to greater than 4. The effluent is passed to a first stage liquid tank and to a first brackish water membrane to filter out complex metals. Rejected effluent from the first brackish water membrane is passed to a second stage liquid tank and thereafter to a second brackish water membrane. The permeate from the second brackish water membrane is passed back to the first stage liquid tank. The rejected effluent from the second brackish water membrane is heated and evaporated. The evaporated effluent is condensed so that metal crystals are gathered for disposal. The permeate through the first brackish membrane is passed to an EDTA resin bed to sequester metal ions. The pH of the discharge from the second pH resin bed is adjusted to between 7 and 11.

The present invention relates to the extraction of lithium from liquid resources, such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

An aqueous solution flows through a desalination system that separates the aqueous solution into purified water and concentrated brine. The concentrated brine is directed into an electrodialysis system that includes an anode and a cathode and at least two monovalent selective ion exchange membranes between the anode and the cathode. At least one of the monovalent selective ion exchange membranes separates at least one diluate channel from at least one concentrate channel in the electrodialysis system, and this membrane selectively allows at least one monovalent ion to pass through the membrane while blocking or inhibiting the transport therethrough of multi-valent ions. The concentrated brine flows through at least the concentrate channel while a voltage is applied to the anode and cathode; and additional aqueous solution flows through the diluate channel.