摘要:
A Water Treatment System wherein liquid that is taken from one or more of the component parts through a device that can treat the liquid to form a supersaturated oxygenated fluid. The oxygenated fluid can then be introduced into an aeration basin or other part of a Water System where organic solids are treated with the supersaturated oxygen content liquid, that is sufficient to raise the DO in the application to a sufficient level needed or required.
摘要:
Integrated membrane treatment systems for treatment of an aqueous solution. In embodiments, components, such as an MBR, are integrated with means to recover energy from the system, for example from an RO concentrate, to operate the other components. In embodiments including biological treatment, RO is integrated with other components, such as an MBR with the ROs ability to remove inorganic nitrogen enabling biological treatment to be performed with only partial nitrification and the MBR operated without active pH control. In embodiments, RO is integrated with a chlorine generator to convert chlorides present in the RO concentrate for an in-situ source of oxidizing biocides for disinfection purposes. Chloramines may be generated in-situ from residual ammonia and chlorides in the RO reject. In embodiments, carrier media is employed in a membrane tank to enhance removal of residual organics by the MBR and to also improve effectiveness of membrane scouring.
摘要:
A method is provided for recycling and treating the wastes of silicon wafer cutting and polishing processes. To begin with, a dewatered filter cake is mixed with water so that the filter cake is diluted to form a working fluid. The water reacts with silicon in the filter cake to produce silicon dioxide and hydrogen. After the hydrogen is extracted for storage, specific gravity separation takes place via water so that silicon carbide and silicon particles are separated for sorting. Then, solid-liquid separation is performed on the remaining working fluid to separate silicon dioxide (solid) from water and PEG (liquid), before PEG is separated from water. Thus, the useful silicon particles, silicon carbide, silicon dioxide, and PEG are recycled from the filter cake to reduce the total amount of wastes. Moreover, as the side product, hydrogen, is of high commercial value, the method also adds value to recycling.
摘要:
A system (10) for processing and treating a wastestream, NPP primary water or like fluid from a PWR, VVER or other boron moderated reactor source is disclosed. The system allows discharge amounts of boron to be safely lowered and selectively recovered as a solid for disposal and recycled or reused in other fluid forms; and allows for replenishing of high pH subsystems needed in situ by internal coordinated use of regeneration fluids.
摘要:
This disclosure relates generally to methods and rare earth-containing additives for removing target materials in the form of hydroxides, carbonates, hydrates, or oxyhydroxyls from, a typically aqueous, liquid medium.
摘要:
A system and a method for treating water, the system comprising a first conduit having an inlet and an outlet with an ozone generator situated thereon, the ozone generator being operative to selectively treat water flowing through the conduit with the ozone, a sensor to measure the oxidation reduction potential of water, the sensor being operatively connected to the ozone generator, a holding tank situated at the outlet of the first conduit, the holding tank having a gas outlet conduit and a gas release valve, a second conduit extending from the holding tank, and an activated carbon filter on the second conduit.
摘要:
Selenium in the form of a reduced species such as selenocyanate is oxidized to produce an oxidized selenium species such as selenate or selenite, and then a biological reduction process is used to remove selenium from the oxidized selenium species. In an example, a chemical oxidant is added to a wastewater containing selenocyanate to produce selenate and selenite. The partially treated wastewater is then fed to a reactor containing a fixed media supporting a biofilm with selenium reducing organisms. The selenium in the selenate and selenite is reduced to an insoluble form of selenium, such as elemental selenium, which precipitates from the wastewater.
摘要:
A device for purifying a liquid in particular water is provided with an ozonating unit for treatment of said liquid with ozone and with a storage reservoir hydraulically connected to the ozonation unit. The device is provided with recirculation means for recirculating said treated liquid from said storage reservoir through a recirculation line. The recirculation line is provided with at least one filtration unit.
摘要:
A pressurized wastewater effluent chlorination system including a treatment tank defining a contact chamber and an aeration chamber. The treatment tank receives wastewater effluent. The system includes a pressure vessel within a liquid chlorine storage container positioned in or near the treatment tank. Preferably, the pressure vessel is a floating vessel having a check valve at its bottom, enabling the vessel to fill with a predetermined amount or measured charge of chlorine depending on the position of a float on the vessel. In response to a timer control or float switch, a valve operates to communicate air pressure from a compressor to the vessel to displace the measured charge of liquid chlorine into the wastewater effluent in the contact chamber. Effluent flow and air discharge into the contact chamber enhances mixing of the chlorine and the effluent.
摘要:
A system for and method of removing particulate material from wastewater discharged from an industrial source. The method using filtration, sedimentation, coagulation and skimming to remove the particulate material from the wastewater.