Matches 1 - 27 out of 27


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US20100051555 Process of removal of arsenic from water  
An arsenic removal process where arsenic 3 is oxidized to arsenic 5 where the water is passed upflow through a bed of manganese dioxide (MnO2) at a sufficient flow rate such that the MnO2 bed is...
US20110163042 REMOVAL METHOD OF MANGANESE FROM WASTE WATER  
A removal method of manganese in which manganese is removed by precipitating manganese selectively from sulfuric acid waste water containing aluminum, magnesium and manganese with inhibiting the...
US20130140243 Method and Plant for Purifying Raw Water  
A method of purifying raw water comprises the steps of supplying the raw water to a generally vertical, open-ended inlet cylinder (23) in a reservoir (20), exposing the water in the inlet cylinder...
US20130319951 Calcium and Aluminum Chlorides for Sulfate Removal from Water  
Sulfate anions and divalent metal ions in water are removed by treating sulfate-containing water, at a pH of 11-12.5, with aluminum chloride and calcium chloride, optionally together with lime, to...
US20140144845 METHOD FOR WATER TREATMENT REGENERATION STAGE  
Embodiments of the invention provide a method and system for providing a regeneration stage in a water treatment system. The method can include entering a first air bleed state to allow...
US20110220571 METHOD OF MAKING AND USING ADSORBENT TO REMOVE HEAVY METAL FROM WASTE WATER  
The present disclosure describes using the naturally present dissolved chemicals as precipitants from local water sources to form an adsorbent. The adsorbent may be collected and used at the right...
US20120031850 Extraction of Sulfate from Water  
Sulfate anions and divalent metal ions, such as magnesium, strontium and barium, in water are removed by treating the water with polyaluminum chloride, usually together with lime, to form...
US20090084733 Treatment of iron contaminated liquids with an activated iron solids (AIS) process  
The present invention is a method and system for treating iron-contaminated water (e.g., mine drainage) using an innovative treatment approach identified herein as the Activated Iron Solids (AIS)...
US20130001173 METHOD FOR A TREATMENT FOR WASTEWATER CONTAINING ALUMINUM, MAGNESIUM, AND MANGANESE  
The wastewater treatment method is to obtain demanganized wastewater, through a step wherein an acid or an alkali is added to sulfuric acid acidified wastewater to adjust pH to not less than 4.0...
US20120118831 PROCESS FOR ENHANCED REMEDIATION OF CONTAMINATED WASTEWATERS, SOILS AND WASTEFORMS  
The present invention provides reagents that may be useful for treating wastes such as impure aqueous materials including wastewater to remove a significant proportion of the heavy metals that may...
US20060231498 Reactive filtration  
In one embodiment, a method for removing a contaminant from alkaline water includes adding ferric iron to alkaline water until reaching a pH less than 7 to form a neutralized solution and exposing...
US20130284678 METHODS AND DEVICES FOR MEASURING THE CONCENTRATION OF AN ADDITIVE  
An apparatus and methods for measuring the concentration of an additive are disclosed. The apparatus comprises a treatment stream (1) and a dosing stream (2). An additive is added to the dosing...
US20140054233 Selective Removal of Silica from Silica Containing Brines  
This invention relates to a method for selective removal of silica and silicon containing compounds from solutions that include silica and silicon containing compounds, including geothermal brines.
US20130068697 PROCESS FOR DEPLETING CALCIUM AND/OR IRON FROM GEOTHERMAL BRINES  
This invention relates generally to processes for extracting iron and/or calcium from geothermal brines.
US20110198297 WATER FILTRATION SYSTEM  
A water filtration system (2) and method includes a conduit network (4) configured to transport a treatment stream of water. An air compressor (10) is in fluid communication with the conduit...
US20090184056 Method of removing dissolved iron in aqueous systems  
Oilfield completion, drilling, produced, flowback, and workover fluids containing iron are treated to remove the iron by passing them through a cavitation device together with an oxidizing agent...
US20060060539 Method for treating at ambient temperatures acid or non-acid mine drainage waters containing heavy metals using recirculated iron oxide as an oxidation and precipitation catalyst  
The present invention is to provide a method for treating Acid Mine Drainage (AMD) or Non-Acid Mine Drainage (NAMD) waters, exhibiting a relative acidity/alkalinity pH factor of from 5.0 to 10.0,...
US20130213896 METHODS FOR TREATING A FERROUS METAL SUBSTRATE  
Disclosed are methods for treating and coating a ferrous metal substrate, such as cold rolled steel, hot rolled steel, and electrogalvanized steel. These methods include contacting the ferrous...
US20060219640 Method for handling waste material generated in a metallurgical process  
The invention relates to a method for improving the filterability and washing result of fine-grained waste material generated in the metallurgical industry. According to the method some of other...
US20080116142 Process to obtain water bodies larger than 15,000 m3 for recreational use with color, transparency and cleanness characteristics similar to swimming pools or tropical seas at low cost  
The invention discloses a process to implement and maintain water bodies larger than 15,000 m3 for recreational use, such as lakes or artificial lagoons, with excellent color, transparency and...
US20090255678 Water Treatment by Chemical-Mechanical Process  
Systems and methods for treating aqueous fluids and their associated methods of use are disclosed. In one embodiment, a method comprises providing an untreated aqueous fluid with a first...
US20050016928 Apparatus and method for water treatment by a direct co-precipitation/filtration process  
Dissolved inorganic contaminants are removed from a dilute aqueous stream by adding a hydrolysable metal compound to the aqueous stream, co-precipitating a hydrolyzed metal compound with the...
US20080035577 System and Method for Treatment of Industrial Wastewater  
A system and method for treatment of wastewater containing heavy metals, oil products, detergents, phenols, dyes, complexions, complexionates, etc. are described. The system includes a static...
US20070210002 CHEMICAL AND PROCESS FOR CLEANING MEMBRANES  
A method for cleaning a microfiltration or ultrafiltration membrane comprising the step of contacting said membrane with a hydroxyl radical. The method is particularly suited for oxidation...
US20090020482 Method and Device for Removing Contaminant Trace Species, Especially Arsenic, from Water  
A method and a device for purifying water from contaminant trace species, especially arsenic, by co-precipitating trace species during oxidation and precipitation of iron compounds with subsequent...
US20080179256 System and method for chemical-free metal particle removal from a liquid media  
Disclosed are systems and methods for removing oxidizable metals from a liquid without the use of chemicals. This aeration technology maximizes the surface area-to-volume ratio of oxygen in the...
US20170113952 Recycled Water and Solids Management System  
A method and device for treating spent wash water produced in operations such as heavy truck washing that includes hydraulic classification to remove fine sand and smaller particles from water...

Matches 1 - 27 out of 27