This application relates to a method of treating wastewater wherein an oxygen infusion system is used to supersaturate wastewater before aerobic biological processes, wherein oxygen is transferred to the wastewater free of oxygen bubbles and achieves a reduction in power demand for the aeration process of wastewater.

The present invention concerns a method for reducing the amount of polluting and/or valuable elements through application of electrolysis, in particular of the electrocapturing phenomenon. The electrolysis according to the present invention is applied permanently over time in a polluted water body. The predetermined action area (115bis, 115ter) preferably has a smaller extension than the water body. The at least one phenomenon (125bis, 125ter) is preferably powered electrically through production of electrical energy in loco through at least one renewable energy source (140). The method is suitable for purifying large expanses of water, like seas, lakes, lagoons and rivers, through plants operating permanently, however this does not rule out other applications.

A mobile device for biological treatment of bioreactor-type wastewater with a submerged membrane enabling treatment of greywater and blackwater has an inlet duct for effluent to be treated and an outlet duct for treated and filtered water connected to a permeate pump. The device includes a container, the interior volume of which has a parallelepiped appearance with two large vertical lateral sides, and a membrane filter having an assembly of parallel, planar filtration membranes also with a vertical appearance. The membranes are connected to a downstream collector collecting the filtered water and connected to the outlet duct. The permeate pump ensures a transmembrane flow less than the subcritical flow. At least one diffuser of fine air bubbles is located at the base of each column. Each diffuser is connected to a regulating solenoid valve and to pump, ensuring therein an airflow greater than or equal to 10 Nm.sup.3/h per diffuser.

A fluctuation belt ecological slope protection system that responds to hydrological variation includes a runoff treatment system and an ecological floating island system. The runoff treatment system includes a grass planting side ditch and a water accumulation pit-pond. The ecological floating island system includes an ecological floating island and an ecological gabion base. The ecological floating island includes a flexible substrate, and aquatic plants. The ecological gabion base is positioned below the ecological floating island. The ecological protection system is suitable for a fluctuation belt and consists of a runoff treatment system and a separable ecological floating island system. Rain water on bank slope is purified and collected as wet soil is stabilized, the protection system responds to backwater water level variation in fluctuation belt, providing growing space for plants, organisms, and fish, following variation in water level, enriching the ecological environment of the fluctuation belt, and improving scenic effect.

A water treatment system comprising a first reactor and a second reactor arranged to be placed in series in a body of water, the first and/or second reactor comprising at least one cell for housing biomedia. A mid-settling zone is provided between the first and second reactors for separating solids in the water. A method of treating water, the method comprising passing water to be treated through a first reactor and then a second reactor arranged in series in a body of water, the first and/or second reactors comprising at least one cell for housing biomedia, wherein the water is passed through a mid-settling zone between the first and second reactors before passing through the second reactor.

An aerating system for treating a waste lagoon or some type of wastewater that captures and recirculates air that has been previously pumped into the lagoon via a skirt. The system also utilizes an oxygen source to pump oxygen into the waste lagoon or wastewater that can also be recirculated. A manifold of the system is designed to have intakes for both the recirculated air and for the oxygen source.

Wastewater treatment plants and processes for treating wastewater are described. The wastewater treatment plant utilizes channel plug flow dynamics with attached growth media and pure oxygen or mixtures of pure oxygen and compressed air.

A lightweight, bioplastic, mobile, floating oil spill mechanical/biological recovery system is dimensionally compact, and quick to assemble. The floating platform can be readily positioned within any waterborne oil/contaminant spill area. After assembly, this platform or apparatus can be directed by either a hand-held digital radio control transmitter or GPS directed mechanism. A lower, multi-roller slip-on belt is designed to be mounted over a circular base support aeration hub assembly with alternating/spaced slotted ring water drainage separators. The belt and aeration assemblies dip bioaugmentation product into the contaminant site thereby exposing microorganisms to both oxygen and target contaminant for treatment and metabolism. Various mechanisms for enhancing metabolic activity of the bioaugmentation product operate in tandem with the primary belt and aeration assemblies to promote effective contaminant metabolism and overall treatment regimes.

The present invention relates to the field of water environment treatment, and particularly discloses a system and method for restoring a river and lake water body by a floating type water purification plant. The method comprises: (1) under the action of a water pump, enabling the river and lake water body to pass through a grille to be filtered; (2) lifting the filtered water body to an ss sedimentation tank by the water pump through a water inlet pipe, and carrying out pre-magnetization on the water body in the water inlet pipe by a pre-magnetization device arranged in the water inlet pipe; (3) enabling the water body subjected to pre-magnetization treatment to enter the ss sedimentation tank so as to remove particles in the water body; (4) enabling the water body treated by the ss sedimentation tank to enter a magnetizer to be subjected to magnetization treatment under a magnetic field intensity of 50 mT to 2,000 mT; and (5) distributing the water body subjected to magnetization treatment at the upper part of the floating type purification plant. According to the present invention, for the river and lake water body, for different growth periods of aquatic plants, the magnetic field intensity of the magnetizer for carrying out magnetization treatment on the water body is regulated for inducing growth of plants and beneficial indigenous microorganism communities, so that the purifying capacity and reliability of an ecological floating bed technology are reinforced.

A device for purifying at least one fluid is provided. The device includes at least a first ion exchange column, an inlet line and an outlet line. The inlet line and the outlet line are associated with a cover part, the inlet line is connected to a first supply line into a first free space between a bottom part and at least one nozzle insert, which is formed as a first bottom nozzle insert, and the nozzle insert has a number of openings for the passage of the fluid. The openings are distributed over at least a partial surface of the nozzle insert, by which the fluid can be introduced into a first volume of the ion exchange column which can be filled with an ion exchange resin.