The present invention relates to a water softening device including: a resin chamber which has an ion exchange resin and softens hard water passing through the ion exchange resin; and electrodes which are arranged by placing the resin chamber therebetween and apply voltages to the resin chamber so as to soften the hard water, and which regenerates the ion exchange resin, wherein the ion exchange resin is a slightly acidic cation exchange resin and/or a weakly alkaline anion exchange resin. The present invention provides the water softening device capable of easily regenerating the ion exchange resin and repeating the softening-regenerating without using chemicals or the like while maintaining the performance of softening water, thereby enabling a continuous use thereof.

An equipment for disposal of cyanobacteria in stagnant waters has a float structure, to which two types of bipolar electrodes (1 and 6) are mounted under the surface of water, interconnected and supplied with electric direct current via an alternator (10). The equipment comprises a supporting float (5) having the shape of a hollow body, in which there is a transversely positioned rib (4) with an attached suspended electrode (1), interconnected to supplies of photovoltaic cells (8) and alternator (10), fixed on the rib (4) there is the device (9) for utilizing wind power, connected to an alternator (10), driving the water pump (2), which is placed in the delivery pipe (3) and is connected directly to the axis of the device (9), for utilization of wind power. Fixed on the supporting float (5) there is the upper float (7) with the anchored grid electrode (6) and with the stored photovoltaic cells (8), interconnected with the electrodes (1) and (6). The delivery pipe (3) is connected to the water pump (2), and the outlet of the delivery pipe (3) is positioned directly above the suspended electrode (1). The upper float (7) copies the shape of the supporting float (5) and is made of a dielectric, light, floating material. The method of disposal of cyanobacteria in stagnant waters is based on quatrolytic disposal of cyanobacteria by the electroflotation method, by means of the above-mentioned equipment.

The present invention relates to a method for enhancing deep degradation of proteins in sludge. The method includes the following steps: an anaerobic digestion product of excess sludge as a substrate is treated by Van Soest's washing method to obtain the sludge free of easily degradable organics and containing degradation-resistant proteins; then, with the anaerobic digestion product of excess sludge as an inoculum and the sludge free of easily degradable organics and containing degradation-resistant proteins as a substrate, a first-stage microbial electrolytic cell coupled anaerobic digestion system is started for treatment to obtain a microbial mixture related to targeted degradation of the degradation-resistant proteins; with the microbial mixture related to targeted degradation of the degradation-resistant proteins as an inoculum and the anaerobic digestion product of excess sludge as a substrate, a second-stage microbial electrolytic cell coupled anaerobic digestion system is started to obtain the sludge with deeply degraded proteins.

A method for the electrochemical remediation of a metal species comprises flowing a contaminated solution comprising a metal species to be removed through an electrochemical cell that includes a working electrode and a counter electrode spaced apart from the working electrode. The working electrode comprises a conductive substrate or current collector with a polymeric coating thereon, where the polymeric coating comprises a semiconducting or redox-active polymer. A reducing potential is applied to the electrochemical cell, thereby inducing the metal species from the contaminated solution to deposit onto the working electrode. After depositing the metal species, a recovery solution is flowed through the electrochemical cell. An oxidizing potential is applied to the electrochemical cell, thereby stripping the metal species from the working electrode and recovering the metal species in the recovery solution.

The invention relates to a device, including: a channel including an inlet at a first end of the channel and an outlet at a second end of the channel; a cathode arranged in the channel, which cathode includes a first segment selected from titanium, stainless steel and titanium provided with a mixed metal oxide coating layer including ruthenium oxide and/or iridium oxide and a second segment including carbon, such as a carbon (felt) segment, arranged downstream of the first segment, an anode, arranged in the channel, selected from titanium or, stainless steel and titanium provided with a mixed metal oxide coating layer including ruthenium oxide and/or iridium oxide, which coating layer faces the cathode; and a power source electrically connected to the cathode and the anode. The invention further relates to a method for the production of chlorine dioxide.

Assemblies designed to facilitate detection of water flow in low water flow situations. In some embodiments, the assembly includes a channel that narrows from an inlet end of the assembly to an outlet end of the assembly to increase the velocity of water flowing through the channel. In some embodiments, the assembly may also include a water delivery mechanism that delivers water flowing through the channel to a flow sensor and enables the detection of water flow, even in low flow situations.

Disclosed is a humidifier with an electrolytic sterilization module, including a water storage tank and an electrolytic sterilization module arranged in the water storage tank. The electrolytic sterilization module includes a housing arranged in the water storage tank, a titanium anode mesh and a titanium cathode mesh. The titanium anode mesh and the titanium cathode mesh are arranged in the housing. The titanium anode mesh is electrically connected with a positive electrode of a power supply by a titanium anode bolt, and the titanium cathode mesh is electrically connected with a negative electrode of the power supply by a titanium cathode bolt, The titanium anode bolt and the titanium cathode bolt penetrate through the housing and the bottom of the water storage tank.

The present disclosure comprises devices, systems and methods for the removal of a precipitate from a surface of a water treatment chamber using a dasher assembly having two cylindrical actuator rods connected to a dasher for scraping an interior surface of the water treatment chamber. The water treatment chamber has an enclosed first end, an enclosed second end, and an electrolysis rod extending linearly therein. The two cylindrical actuator rods extend linearly within the water treatment chamber and pass through the enclosed first end so that portions of the two cylindrical actuator rods are within the water treatment chamber and portions are outside the water treatment chamber. The dasher includes an aperture therethrough so the electrolysis rod can pass through the aperture and allow the dasher to translate from a first location and a second location by translation of the two cylindrical actuator rods via a mechanical actuator. The dasher may include teeth extending from an outer edge of the dasher to score the precipitate as it translates from the first location to the second location. The dasher assembly is controlled manually and/or by an automated control system.

A capacitive deionization desalination device is provided. The capacitive deionization desalination device includes a mesh spacer and two carbon nanotube composite electrodes. The mesh spacer is located between the two carbon nanotube composite electrodes. Each carbon nanotube composite electrode includes at least one carbon nanotube film structure and a composite carbon layer, and the carbon nanotube film structure includes at least two carbon nanotube films, and the composite carbon layer includes activated carbon and carbon black, and the composite carbon layer is located on the carbon nanotube film structure.

The present disclosure comprises devices, systems and methods for the removal of a precipitate from a surface of a water treatment chamber using a dasher assembly having two cylindrical actuator rods connected to a dasher for scraping an interior surface of the water treatment chamber. The water treatment chamber has an enclosed first end, an enclosed second end, and an electrolysis rod extending linearly therein. The two cylindrical actuator rods extend linearly within the water treatment chamber and pass through the enclosed first end so that portions of the two cylindrical actuator rods are within the water treatment chamber and portions are outside the water treatment chamber. The dasher includes an aperture therethrough so the electrolysis rod can pass through the aperture and allow the dasher to translate from a first location and a second location by translation of the two cylindrical actuator rods via a mechanical actuator. The dasher may include teeth extending from an outer edge of the dasher to score the precipitate as it translates from the first location to the second location. The dasher assembly is controlled manually and/or by an automated control system.