Pilot-scale UV/H2O2 study for emerging organic contaminants decomposition

2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Xiaona Chu ◽  
Yan Xiao ◽  
Jiangyong Hu ◽  
Elaine Quek ◽  
Rongjin Xie ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Emerging Contaminants ◽  
Treatment Process ◽  
Advanced Oxidation Process ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
International Travel ◽  
Aqueous Environment ◽  
Emerging Organic Contaminants ◽  
Suitable Treatment

AbstractHuman behaviors including consumption of drugs and use of personal care products, climate change, increased international travel, and the advent of water reclamation for direct potable use have led to the introduction of significant amounts of emerging organic contaminants into the aqueous environment. In addition, the lower detection limits associated with improved scientific methods of chemical analysis have resulted in a recent increase in documented incidences of these contaminants which previously were not routinely monitored in water. Such contaminants may cause known or suspected adverse ecological and/or human health effects at very low concentrations. Conventional drinking water treatment processes may not effectively remove these organic contaminants. Advanced oxidation process (AOP) is a promising treatment process for the removal of most of these emerging organic contaminants, and has been accepted worldwide as a suitable treatment process. In this study, different groups of emerging contaminants were studied for decomposition efficiency using pilot-scale UV/H

Ozone/H2O2 AOP pilot testing at a waterworks with dynamic raw water characteristics in Singapore

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
Jenny Wang ◽  
Achim Ried ◽  
Arne Wieland ◽  
Yaning Zhang ◽  
Minghui Chen ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Advanced Oxidation Process ◽  
Drinking Water Treatment ◽  
Cost Effective ◽  
First Year ◽  
Proactive Approach ◽  
Water Characteristics ◽  
Water Treatment Process ◽  
Emerging Organic Contaminants ◽  
National Water

In response to the national water strategies and pursuing to close the urban water loop with minimum concern, a proactive approach needs to be considered for future drinking water treatment process in Singapore. Ozone or ozone based advanced oxidation process (AOP) followed by granular activated carbon (GAC) can be one of the best available and cost-effective processes in implementing the national water strategies. Xylem Water Solutions and PUB jointly started a two-year ozone based AOP pilot study at a Waterworks in Singapore. The objective of the project is to study the effectiveness of ozone based AOP on the removal of taste and odour compounds and various emerging organic contaminants. In this paper, the first year results with six selected contaminants show that it is promising to employ ozone based AOP to remove the concerned organic contaminants.

scholarly journals Hybrid Advanced Oxidation Processes Involving Ultrasound: An Overview

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3341 ◽  
Author(s):  
JagannathanMadhavan ◽  
JayaramanTheerthagiri ◽  
DhandapaniBalaji ◽  
SallaSunitha ◽  
Choi ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Organic Contaminants ◽  
Advanced Oxidation Process ◽  
Anthropogenic Activities ◽  
Environmental Pollutants ◽  
Advanced Oxidation ◽  
Aqueous Environment ◽  
Physical Conditions ◽  
Chemical Utilization ◽  
Complete Mineralization

: Sonochemical oxidation of organic pollutants in an aqueous environment is considered to be a green process. This mode of degradation of organic pollutants in an aqueous environment is considered to render reputable outcomes in terms of minimal chemical utilization and no need of extreme physical conditions. Indiscriminate discharge of toxic organic pollutants in an aqueous environment by anthropogenic activities has posed major health implications for both human and aquatic lives. Hence, numerous research endeavours are in progress to improve the efficiency of degradation and mineralization of organic contaminants. Being an extensively used advanced oxidation process, ultrasonic irradiation can be utilized for complete mineralization of persistent organic pollutants by coupling/integrating it with homogeneous and heterogeneous photocatalytic processes. In this regard, scientists have reported on sonophotocatalysis as an effective strategy towards the degradation of many toxic environmental pollutants. The combined effect of sonolysis and photocatalysis has been proved to enhance the production of high reactive-free radicals in aqueous medium which aid in the complete mineralization of organic pollutants. In this manuscript, we provide an overview on the ultrasound-based hybrid technologies for the degradation of organic pollutants in an aqueous environment.

Advanced membrane technology for application to water treatment

1998 ◽  
Vol 37 (10) ◽  
pp. 91-99 ◽  
Author(s):  
Yasumoto Magara ◽  
Shoichi Kunikane ◽  
Masaki Itoh
Keyword(s):  
Water Treatment ◽  
Organic Contaminants ◽  
Drinking Water Treatment ◽  
Treatment Method ◽  
Pilot Scale ◽  
Membrane Technology ◽  
Successful Implementation ◽  
Treatment Processes ◽  
Further Development ◽  
By Products

Following the successful implementation of the ‘MAC21’ Project, the ‘New MAC21’ Project is being implemented for further development of membrane technology in Japan. The project includes various pilot-scale and laboratory experiments on 1) nanofiltration system, and 2) MF/UF system combined with advanced treatment processes such as activated carbon treatment, ozonation and biological treatment. As the result, it has been shown that both systems are applicable to drinking water treatment. Although a NF system was very effective for the removal of organic contaminants such as precursors of disinfection by-products, it is considered that the development of a proper treatment method for the concentrate will be very important in the future.

Comparison on Permanganate and Ozone as Pre-Oxidation Agents

2014 ◽  
Vol 955-959 ◽  
pp. 3408-3413 ◽  
Author(s):  
Hong Wei Sun
Keyword(s):  
Drinking Water ◽  
Treatment Process ◽  
Removal Rate ◽  
Oxygen Demand ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
Turbidity Removal ◽  
Trihalomethane Formation Potential ◽  
Water Treatment Process ◽  
Oxidation Reactor

Comparative study on permanganate and ozone as pre-oxidation agents were performed on pilot scale with traditional drinking water treatment process, chemical oxygen demand (COD), total organic carbon (TOC), UV254, turbidity, trihalomethane formation potential (THMFP) were examined at each reactor’s effluent. The results show that at pre-oxidation reactor, the total organic remained stable after by the two agents, while for UV254, pre-ozonation has a removal rate of 34%, comparing that of 17% by permanganate. At the sedimentation process, 0.4 mg/L permanganate improves the removal rate of turbidity and COD by 0.99 % and 8.4%, respectively; while a positive COD removal of 11.8 % was achieved by 0.9 mg/L pre-ozonation, and an average of-10.08% turbidity removal was achieved at applied dosage (0.5, 0,9 and 1.5 mg/L), which can be made up for in the followed sand filtration reactor. Both permanganate and pre-ozonation show higher removal rate of THMFP for the finished water.

Removal of emerging organic contaminants with a pilot-scale biofilter packed with natural manganese oxides

2017 ◽  
Vol 317 ◽  
pp. 454-460 ◽  
Author(s):  
Yongjun Zhang ◽  
Hong Zhu ◽  
Ulrich Szewzyk ◽  
Sven Lübbecke ◽  
Sven Uwe Geissen
Keyword(s):  
Organic Contaminants ◽  
Manganese Oxides ◽  
Pilot Scale ◽  
Emerging Organic Contaminants

Analytical Perspectives on Emerging Organic Contaminants in the Aquatic Ecosystem

2020 ◽  
pp. 68-80
Author(s):  
Hossein Miraji ◽  
Othman Chande Othman ◽  
Faustin Ngassapa ◽  
Mureithi Eunice
Keyword(s):  
Organic Contaminants ◽  
Emerging Contaminants ◽  
Solid Phase ◽  
Dynamic Properties ◽  
Phase Extraction ◽  
Solid Phase Micro Extraction ◽  
Future Perspectives ◽  
Emerging Organic Contaminants ◽  
As Solid Phase ◽  
Detection And Quantification

This chapter introduces readers to the background of emerging contaminants by defining emerging contaminants and telling their history and their corresponding effects. It describes the dynamic properties of emerging contaminants such as advection and dispersion, chemistry, and their reactivity behavior. Lastly, it tells the analytical methodologies on sample preparation such as solid phase extraction and solid-phase micro-extraction, detection and quantification of organic ECs, and it proposes future perspectives of emerging contaminants.

scholarly journals Non-Target Screening Method for the Identification of Persistent and Emerging Organic Contaminants in Seafood and Sediment from Jakarta Bay

2015 ◽  
Vol 10 (3) ◽  
pp. 141 ◽  
Author(s):  
Dwiyitno Dwiyitno ◽  
Larissa Dsikowitzky ◽  
Nuri Andarwulan ◽  
Hari Eko Irianto ◽  
Hanifah Nuryani Lioe ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Emerging Contaminants ◽  
Screening Method ◽  
Polar Compounds ◽  
Perna Viridis ◽  
Linear Alkylbenzenes ◽  
Emerging Organic Contaminants ◽  
Polycyclic Aromatic ◽  
Target Screening ◽  
Technical Products

Identification of persistent and emerging organic contaminants in green mussels (Perna viridis), various fishes, banana shrimp (Penaeus merguiensis) and sediment samples from Jakarta Bay has been employed. A non-target GC-MS screening approach has identified more than 60 individual organic compounds from the whole fractions either non-polar, semi-polar or acidic-polar compounds. The substances comprised as persistent organic pollutants (POPs) including DDT (dichlorodiphenyl trichloroethane) and its metabolites as well as high molecular weight polycyclic aromatic hydrocarbons (HMW-PAHs). Noteworthy, a number of emerging contaminants detected in the present study have never been reported previously either from the same location or from Asian waters. They include some priority contaminants of non-persistence halogens and emission of technical products, such as di-iso-propylnaphthalenes (DIPNs) dichlorobenzene (DCB), dichlorodiphenyl chloroethene (DDMU) and phenylmethoxynaphthalene (PMN). In general, the concentration order of the priority organic contaminants was sediment > green mussel > fishes > shrimp. Further analysis based on the spatial distribution, individual concentrations and bioavailability suggested that some contaminants are applicable as molecular marker for the assessment of anthropogenic emission in Jakarta Bay, i.e. DIPNs, linear alkylbenzenes (LABs), phenylmethoxynaphthalene (PMN), PAHs, dichlorobenzene, DDT and its metabolites.

Study on the Effect Factors of the Removal Rate of Permanganate Index in the Filtration Process

2012 ◽  
Vol 538-541 ◽  
pp. 2190-2193
Author(s):  
Xue Bin Jia ◽  
Yun Hao Pan ◽  
Li Mei Han ◽  
Dong Mei Liu
Keyword(s):  
Removal Efficiency ◽  
Organic Contaminants ◽  
Treatment Process ◽  
Removal Rate ◽  
Drinking Water Treatment ◽  
Effect Factors ◽  
Obvious Effect ◽  
Water Treatment Process ◽  
The Ideal

This article is about the drinking water treatment process. We took the filter as the research object, and investigated the removal efficiency of permanganate index in different filtering conditions and water quality conditions, and discussed the effect factors. The experimental results show that the filtration column play the role of the organic contaminants reduced mainly during 0 ~ 40 cm deep from the top. When organic contaminants content in water is high, the permanganate index can be removed efficiently, and the removal rate of permanganate index is in proportional to time within a certain range. Turbidity has no obvious effect on permanganate index removal by filtration, but in order to obtain the ideal removal efficiency, the turbidities should be more than 10 NTU. When the hydraulic loading is in 1~ 2 m3 / (m2 • h), there is no much more effect on filtration efficiency.

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