advanced oxidation technology Articles
-
Oxidative destruction of foaming agent, COD and TOC in wastewater using advanced oxidation technologies
In recent years, improvement in ozone based advanced oxidation process design and efficiency resulted in lower capital and operating costs. An investigation into alternatives for hard COD, TOC and foaming agent oxidative destruction which is economically attractive and do not generate sludge, lead to the evaluation of our ozone based advanced oxidation processes (AOP). The results of this pilot ...
-
Electrochemical oxidation of wastewater – opportunities and drawbacks
Electrochemical oxidation by means of boron-doped diamond (BDD) anodes generates a very efficient oxidizing environment by forming hydroxyl radicals, providing effective water purification for elimination of persistent pollutants. In this project the degradation rates of organic and inorganic substances are investigated. Experiments were performed in laboratory and pilot scale with synthetic ...
-
Advanced treatment of effluents from an industrial park wastewater treatment plant by ferrous ion activated persulfate oxidation process
The advanced oxidation technology, ferrous ion (Fe(II)) activated persulfate (PS) producing sulfate radicals, was used for the advanced treatment of effluent from an integrated wastewater treatment plant in a papermaking industrial park. Separate and interactive effects of PS dosage, Fe(II)/PS ratio and initial pH on chemical oxygen demand (COD) removal were analyzed by the response surface ...
-
Removal of pharmaceuticals using combination of UV/H2O2/O3 advanced oxidation process
Water and wastewater effluents contain a vast range of pharmaceutical chemicals. The present study aims to determine the potential of the advanced oxidation technology UV/H2O2/O3 and its sub-processes (i.e. UV, UV/H2O2, UV/O3, O3 and H2O2/O3) for the degradation of the antibiotics ciprofloxacin (CIP) and trimethoprim (TMP), and the antineoplastic drug cyclophosphamide (CPD) from water. Creating ...
-
Scale-up of a Medium Pressure UV System for the Treatment of N-Nitrosodimethylamine (NDMA) and its Advantages Over Low Pressure UV Systems
Untitled Document Recently there has been considerable concern in California about the detection of N-nitrosodimethylamine (NDMA) in drinking water at levels as high as 900 ppt. NDMA was found to be a carcinogen in animals and assessed as a Class 1 carcinogen. It is currently listed as a priority pollutant on the US EPA National Priorities List. California ...
-
Evaluation of parameters influencing removal efficiencies for organic contaminant degradation in advanced oxidation processes
Advanced oxidation processes, based on hydroxyl radical chemistry, can be used to successfully destroy chemical contaminants in waters intended for reuse. In determining the effectiveness of these radical oxidative degradations and transformations in water, both reaction rate constants and compound removal efficiencies must be considered. Removal efficiencies are defined as the number of ...
-
Successful degradation of a cobalt organic complex and TOC by advanced oxidation processes
A chemical manufacturing plant needed to remove cobalt from biologically treated wastewater. The current cobalt concentration is higher than 1000 ppb and needs to be reduced to below 5 ppb. Cobalt speciation analysis results have shown that much of the cobalt is present as organically bound complexes. These complexes are known to be difficult to remove by adsorption, precipitation or ion ...
-
Water matrix effect on UV photodegradation of perfluorooctanoic acid
The widespread detection of perfluorinated compounds (PFCs) in the water environment has been a concern for the last several years, while effluents from wastewater treatment facilities are the major sources of these compounds. Even advanced oxidation technologies (AOTs) are not useful for mineralization of the compounds due to their very high stability. Photochemical techniques using particularly ...
-
Utilizing UV, ozone & AOP technologies for municipal, industrial & waste water treatment
ESCO International Solutions & Technologies provide a unique portfolio of technical expertise and equipment, specializing in Ozone, UV and Advanced Oxidation Processes (AOP) for water, gas effluent & Odour treatment. Adapting to strict user guidelines and customer focused design means ESCO International systems are reliable and delivers high water purification standards. As conventional ...
-
Ozone Based AOP process for refractory COD reduction in industrial waster water
Introduction In recent years improvements in ozone based advanced oxidation technology efficiencies have lowered capital and operating expenses, improving the viability of the use of ozone as the main oxidant. An investigation into alternatives for refractory COD removal which is economically attractive and do not produce sludge lead to an evaluation of ozone based advanced oxidation processes ...
-
Scale-up of a Medium Pressure UV System for the Treatment of N-Nitrosodimethylamine (NDMA) and its Advantages Over Low Pressure UV Systems
Recently there has been considerable concern in California about the detection of N-nitrosodimethylamine (NDMA) in drinking water at levels as high as 900 ppt. NDMA was found to be a carcinogen in animals and assessed as a Class 1 carcinogen. It is currently listed as a priority pollutant on the US EPA National Priorities List. California has set an 'action level' of 20 ppt for NDMA. NDMA is ...
-
GWT: AOP Treatment Solutions that Protect the World from PFAS, GenX and Other Emerging Contaminants in Drinking Water & Wastewater
According to recent data, published by EWG, 110 million Americans could possibly have Perfluoroalkyl and Polyfluoroalkyl substances (PFAS) contaminated drinking water sources. While these chemicals have been in use for many years, the extent of their environmental and human impact is only just beginning to surface. As of March 2020, the Environmental Working Group (EWG) had identified 1,477 ...
-
Advanced Oxidation: Water Treatment Solutions for PFAS, GenX & other Emerging Contaminants
According to recent data, published by EWG, 110 million Americans could possibly have Perfluoroalkyl and Polyfluoroalkyl substances (PFAS) contaminated drinking water sources. While these chemicals have been in use for many years, the extent of their environmental and human impact is only just beginning to surface. As of March 2020, the Environmental Working Group (EWG) ...
-
Evaluation of flow-rate dynamics in the simultaneous photocatalytic treatment of multichlorinated substituted phenols in continuous-flow systems
The project investigated the simultaneous degradation of chlorophenols dissolved in aqueous systems. The photocatalysis advanced oxidation process was the technology applied to achieve treatment. Chemical behavioural tracking was performed using the chloride dehalogenation sequence dynamics. The study recorded reductive dehalogenation chemical transformation kinetics of multi-substituted ...
-
Application of a Medium Pressure UV System for the Treatment of N-Nitrosodimethylamine (NDMA)
N-nitrosodimethylamine (NDMA) was first detected in 1990 as a problem pollutant in drinking water wells at levels as high as 3,000 ppt in Elmira, Ontario, Canada. The waste from a large chemical plant over many years had led to the contamination of the drinking water wells for the community. After extensive evaluation and testing, it was determined that UV photolysis was the most effective ...
-
Degradation of wine industry wastewaters by photocatalytic advanced oxidation
ABSTRACTWine industry wastewaters contain a high concentration of organic biodegradable compounds as well as a great amount of suspended solids. These waters are difficult to treat by conventional biological processes because they are seasonal and a great flow variation exists. Photocatalytic advanced oxidation is a promising technology for waters containing high amounts of organic matter. In ...
-
Advanced Oxidant using Mineral Oxychloride Technology
Jenfitch, based in Walnut Creek, California, has developed a new oxidant that is effective at lower TOC, reducing THM’s and HAA5’s, eliminating T & O (taste and odors), effective at controlling HAB’s (harmful algal blooms), effective at controlling zebra mussels and other shellfish encrustation, effective at improving coagulation & flocculation, eliminating biofilm ...
-
Genclean AOP: Understanding Liquid Advanced Oxidation Water Treatment
Exploring the world of Genclean Liquid Advanced Oxidation Water Treatment, we delve into a technology that has the capability to revolutionize water disinfection. This advanced oxidation treatment solution addresses critical limitations associated with conventional disinfectants and the growing concern over industrial waste waters impact on global water sources. We will dive deep into ...
-
Clays for heterogeneous photocatalytic decolorization of wastewaters contaminated with synthetic dyes: a review
Photocatalysis is one of the most environment-friendly and technologically viable advanced oxidation processes. Compared to conventional thermal, biological, and physicochemical treatments, photocatalytic processes have more moderate reaction conditions and higher efficiency. They are a promising technology for the treatment of dye wastewaters, particularly those that have toxic and high ...
-
Affinity adsorption for the removal of organic micropollutants in drinking water sources; proof of principle
Sources for drinking water (DW) production contain increasing concentrations of organic micropollutants, such as pesticides and pharmaceuticals. Traditional purification processes are not suitable for their removal or conversion, but even sophisticated technologies, like advanced oxidation processes and membrane filtration, are not able to efficiently remove all compounds from DW. For ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you