Abstract:
Process and apparatus to remove colloids and nitrogen compounds from contaminated water by coagulating the colloids and separating them from the water. The water is then continuously oxidized with chlorine electrolytically to destroy the nitrogen compounds.
Abstract:
A liquid electrolyte can be desalinated and purified using a system that includes a first electrode and a configuration selected from (a) a second electrode and at least one distinct ion-selective boundary and (b) a second electrode that also serves as the ion-selective boundary. The ion-selective boundary is contained in the liquid conduit adjacent to a porous medium that defines pore channels filled with the liquid and that have a surface charge, and the charge of the ion-selective boundary and the surface charge of the pore channels share the same sign. A liquid including at least one charged species flows through the pore channels, forming a thin diffuse electrochemical double layer at an interface of the liquid and the charged surface of the pore channels. A voltage differential is applied between the electrodes across the porous medium to draw ions in the liquid to the electrodes to produce brine at the electrodes and to create a shock in the dissolved-ion concentration in the bulk volume of the liquid within the pore channels, wherein a depleted zone with a substantially reduced concentration of dissolved ions forms in the liquid bulk volume between the shock and the ion-selective boundary.
Abstract:
In an electrolytic apparatus for removing contaminants from water, a set (110) of spaced apart conductive electrodes (40) in a reaction chamber (54, 112, 114), is arranged in oppositely charged groups of first and second interleaved electrodes with flow paths between them. Non-conductive turbulence inducers (158, 168) on the faces of electrodes (40) are applied to water in the flow paths. One variety is modular elements (1 58) with stepped increases in width to present a narrow leading edge in the direction of flow. Another variety is a continuous set of wave guides (168) bordering the flow path. Electrodes (40) are selectively powered in patterns creating turbulence, with effective patterns including a first and last electrode powering pattern and a mini-cell electrode powering pattern.
Abstract:
An electrocoagulation reactor for the treatment of wastewater. The electrocoagulation reactor typically engages a DC power source and a source of wastewater to be treated. It has a housing with walls and a wastewater inlet, and a treated wastewater outlet. There is at least one anode/cathode pair of oppositely charged spaced apart plates that engage the power source to charge the anode with a positive charge and the cathode with a negative charge. Between each anode/cathode pair is at least one segmented intermediate plate, which is not engaged to the power source of electrical energy, and which intermediate plate is segmented into multiple segments, which multiple segments lay generally in the same plane.
Abstract:
The present invention provides an epoch-making fluid reforming device which requires a small installation site, avoids clogging of pipes, allows uniform on-site adjustment, does not use chemicals or minimizes chemicals ii any, enables germ treatment, and purifies and reforms every fluid including water. The fluid reforming device has (a) a container for fluid reforming having an inlet for introducing an unpurified fluid and an outlet for discharging a purified fluid; (b) a pair or a plurality of pairs of AC application electrodes stored in the container; (c) a cylindrical ground electrode surrounding the AC application electrodes; (d) a polarity switching circuit connected to the AC application electrodes for switching the polarities of the pair of electrodes; and (e) a constant current supply having a current detector for detecting current flowing between the AC application electrodes in fluid reforming, the constant current supply keeping a current value detected by the current detector constant.
Abstract:
The present invention relates to the technical filed of electrochemical elimination or reduction of microbial impurities of liquids. The liquids treated may inter alia include wastewater, industrial process water and water intended for human consumption. The device comprises a disinfection chamber connected through a liquid inlet located in the bottom of a base area by a manifold; an inner chamber housing an electrode stack comprising at least two perforated electrode plates made of conductive material symmetrically placed at a distance of 1-5 mm connected in parallel via connector mounted at the chamber; said electrode plates being separated from each other and the chamber wall at a fixed distance by spacers, and arranged such that in perpendicular plane view 60-100% of the area of passage is covered by the electrodes; an outer chamber; an outer shell; a liquid outlet; connectors for wiring connecting the connector and one or more external power supply units, each of the above elements being designed such that said liquid has a forward velocity of 2-50 cm/s and an initial perpendicular velocity component above 10 cm/s and wherein further the current density is above 5 mA/cm2.
Abstract:
Method for the removal of ions and ionizable substances from a polar liquid (10) comprising at least one process wherein said polar liquid (10) is split into a first stream (F1) and a second stream (F2), Said first stream (F1) passing through an electrochemically regenerable ion-exchange material (2) located where an electric field between two electrodes (4, 5) is applied, said first stream (F1) flowing from one electrode (4) to the other electrode (5) so that the ions to be removed are migrating in the direction reverse to the first stream flow through said ion-exchange material (2), Said second stream (F2) rinsing said one electrode (4), and said material is regenerated by the ions which are formed at the other electrode (5). Device in particular for the implementation of said method.
Abstract:
System and methods are disclosed for filtering wastewater. In one embodiment, a water filtering system comprises a first filtering stage and a second filtering stage. The first filtering stage receives a flow of wastewater, and uses electrocoagulation to separate suspended particles from the wastewater and produce filtered wastewater. The second filtering stage receives the filtered wastewater from the first filtering stage, and uses mechanical filtering to remove suspended particles from the filtered wastewater and produce filtered water that is substantially free from suspended particles.
Abstract:
The invention relates to an electrolysis device for cleaning acidic waters which comprises a cathode, an anode, and an ion exchange membrane, wherein the membrane is arranged between the cathode and the anode and is attached at least along the entire circumference of its rim, wherein many inlets and outlets are arranged along the upper and lower rim of the electrolysis device which are linked to the cathode space or to the anode space, in such a way that a plug flow, ideally with a laminar profile, is created in the cathode space and in the anode space.
Abstract:
A method for the treatment of fluid including the step of exposing the fluid to a pulsed plasma discharge. The pulsed plasma discharge will be generated using a suitable electrode configuration to generate the plasma discharge in the fluid. Apparatus useful in the method may include a vessel, at least two electrodes for generating a plasma discharge in water, and a flow inlet and a flow outlet to allow water to be passed through the vessel. Also described is an in-line water treatment, where a pulsed plasma discharge is used in a pipe carrying moving water. Plasma based fluid treatment system may have many advantages in comparison to other treatment methods, such as very minimal maintenance, low operating power, and minimal pressure loss through the device.