288results about "Paint waste treatment" patented technology

A method or process of treating a contaminated fluid (10) having at least one contaminant having a property selected from the group consisting of being volatile, hazardous, tacky and a combination thereof is provided. The method comprises contacting the contaminated fluid with an effective amount of an agent (12) selected from oxidizing agents, free radical producing agents and a combination thereof for an effective amount of time to convert a substantial amount of the at least one contaminant to at least one corresponding modified contaminant having a property selected from the group consisting of being non-volatile, less volatile than the converted contaminant non-hazardous, less hazardous than the converted contaminant, non-tacky and a combination thereof; and generating a treated fluid (14) having a level of the at least one contaminant and of the at least one corresponding modified contaminant to allow the treated fluid to at least meet requirements for release, reuse or further treatment.

The invention discloses a device and method for treating and recycling printing and dyeing wastewater, relating to printing and dyeing wastewater treatment and providing a device and method for treating and recycling printing and dyeing wastewater on the basis of a nano catalytic electrolysis and membrane technology, with the advantages of high removing rate of CODCr, less consumption of chemical agents, less produced sludge, more thorough treatment and high water recycling rate. The device is provided with a coarse grid filtering machine, an adjusting pool, a hydraulic sieve, a desulphurization reaction tank, a nano catalytic electrolysis machine, a flocculation reaction tank, a settling tank, an air flotation device, a biochemical reaction tank, a secondary settling tank, a secondary nano catalytic electrolysis machine, a filter, a pressure filter, a membrane system and a circulating water tank. The method comprises the following specific steps of desulphurization, nano catalytic electrolysis, flocculation, biochemical treatment, secondary catalytic electrolysis, filtering, and membrane separation.

Methods and apparatuses for treatment of contaminated liquid are provided including an integrated ultra-filtration and clarification apparatus, and an optional integrated electrocoagulation capability. The integrated apparatus comprises an outer tank, an inner casing, and a plurality of ultra-filtration filters contained within the inner casing. Clarification of liquid occurs in the gap between the casing and tank. Solid matter settles, and aggregates in the bottom portion of the tank. The accumulated solid material acts as a secondary filter by pre-filtering the liquid prior to contact with the ultra-filtration filters. Clarified liquid is retained in a chamber of the casing, and the clarified liquid is drawn through the ultra-filtration filters as initiated by a source of vacuum communicating with the ultra-filtration filters. The integrated apparatus can be incorporated within any desired liquid treatment facility, and one combination in accordance with this system of the present invention includes an upstream electrocoagulation unit and a downstream reverse osmosis unit. The electrocoagulation function may be incorporated in the tank by a plurality of reaction plates or blades mounted to the interior sidewall of the tank. Additionally, the integrated apparatuses may include bacterial treatment in which a selected group of micro-organisms are introduced into the apparatus for treatment of particular contaminates.

The invention relates to a method and apparatus for recycling a wash solution used in powder coating which uses filters. The invention also relates to methods and apparatuses for recycling wash solutions used in spray washing, steam cleaning or car washes using filters.

The invention relates to a method and apparatus for recycling a wash solution used in powder coating which uses filters. The invention also relates to methods and apparatuses for recycling wash solutions used in spray washing, steam cleaning or car washes using filters.