After the process optimization, the MIEX treatment was proven to be a good option for controlling the DBP derived from HA. This work investigated the removal of humic acid (HA) as the precursor of disinfection by-product (DBP) using a magnetic ion exchange (MIEX) resin.

Process, parameter optimization and recent advances Kris O'Dowd and Suresh C. Pillai* ... be used for the disinfection of water or removal of microorganisms [28, 69-71]. The increase in

Fenton and photo-Fenton process have been demonstrated to be a good option as alternative water disinfection process during the last years. The aim of this chapter is to briefly describe the fundamentals of this process with special focus on particular aspects related to pathogens inactivation in water. ... Optimization of …

The current review examines the effectiveness of the photo-Fenton process at a near neutral pH for the disinfection of water. The optimal pH was seen to be at 2.8, with the efficiency of the photo ...

UV disinfection requires considerably greater quantities of primary energy than chlorination Disinfection Process Chlorination/ Dechlorination UV –Low Pressure UV –Low Pressure High-Output* UV –Medium Pressure Power Consumption (kWh/d) 144 1,440 1,080 4,560 Estimated power consumption for disinfection (200 fecal coliform units/mL)

Chemical and food industries are focusing on reducing the economic and environmental impact of cleaning operations. This study aims to analyse the use of alkaline ozonated formulations to remove starch adhering to stainless steel surfaces, improving disinfection of mature biofilms with Listeria and Pseudomonas, and reducing the …

In order to solve this optimization model, the synergy mechanisms between disinfection units in ozone-UV-chlorine process were clarified and quantified through theoretical analysis. Finally, a MATLAB-based simulation and optimization software program for the ozone-UV-chlorine process was developed to identify the optimal …

In this study, disinfection through the generation of hydroxyl (Fenton process (FP)) and sulfate (Fenton-like process (FLP)) radicals was validated and optimized. The optimization was carried out in synthetic water through an experimental design methodology using …

Hence, optimization of chlorination process was carried out using response surface methododology (RSM) to achieve counts of 1000 CFU/100 mL for rest of the four microbial species except for the resistant species. Optimization can help to control the disinfection process so that the use of excessive chlorine for disnfection can be …

Process optimization is a set of methods and tools used to make processes more efficient and effective. There are several types of process optimization techniques, including process mapping, process mining, and Six Sigma. When optimizing a process, it's important to identify goals, analyze current processes, develop an optimized process, …

In this study, we proposed a dosage optimization model for ozone-UV-chlorine synergistic disinfection process. The model was able to identify the cost …

This study investigated the optimization of process parameters in terms of 2,4-dichlorophenoxyacetic acid (2,4-D) removal from raw water by using magnetic ion exchange (MIEX) resin.

Plasma-activated water for disinfection and quality retention of sea bream fillets: Kinetic evaluation and process optimization. Author links open overlay panel Sofia Chanioti a, Marianna ... 3.95, 5.14, 4.96 and 4.81 logCFU/g, respectively) at the most intense process conditions (fish/immersion agent ratio of 1/5 and immersion time of 20 min ...

Disinfection is a key element in controlling infections. Fogging, also known as fumigation, is one of the most effective chemical disinfection methods. Peracetic acid (PAA) is a powerful oxidant with bactericidal and fungicidal properties. The aim of this study is to determine the type of bacteria and fungi present in educational institutions and …

One of the key parameters of the process is that it requires an acidic pH [103, 104] typically between 2.0–4.0 [105].Soares et al. reported that a pH of 2.8 was seen as the "optimum" [106] to prevent the iron catalyst from precipitating.At a low pH, H + acts as a scavenger of hydroxyl radicals [107] forming oxonium ions [H 3 O 2] + that cause the …

controlling costs through process optimization, the treatmentplantwas able to reduce its chemicalcosts by more than 30%. OPERATION AND MAINTENANCE A routine O&M schedule should be developed and implemented for any chlorine disinfection system. Regular O&M includes the following activities: • Disassembling and cleaning the various

Moreover, electrochemical disinfection process has shown its feasibility for many types of water such as solute-containing water, drinking water, industrial water and seawater. ... no research works have reported the study and the optimization of the three combination process (nanofiltration- electrochemical water disinfection - renewable ...

According to the optimization process, 4.6% sodium hypochlorite along with 0.008% hydrogen peroxide for 16.81 min would result in the best outcomes. ... and optimization of disinfection process ...

Abstract. In the drinking water treatment processes, the optimization of the treatment is an issue of particular concern. In general, the process consists of many units as settling, coagulation, flocculation, sedimentation, filtration and disinfection. The optimization of the process consists of some measures to decrease the managing and ...

Flowchart of Process to Reduce DBPs through Optimization. Flowchart showing the process to reduce disinfection byproducts through optimization of a drinking water system, which is discussed in various presentations throughout the webinar series. Click on the flowchart to view a larger version, save or print this image.

Aqueous suspensions of Microcystis aeruginosa were preoxidized with either ozone or permanganate and then subjected to chlorination under conditions simulating drinking water purification. The impacts of the two oxidants on the algal cells and on the subsequent production of dissolved organic matter and disinfection byproducts were investigated. …

Optimization of disinfection process. To achieve the main goal of the current work, multi−objective genetic algorithm (MOGA) solver was applied to balance the two considered aspects simultaneously i.e. maximize the disinfection efficiency and minimize the negative disinfection effect. As there are two outputs, two different objectives ...

In this study, we proposed a dosage optimization model for ozone-UV-chlorine synergistic disinfection process. The model was able to identify the cost-effective doses of the disinfectants under the constraints of microbial inactivation, decolorization, and residual chlorine retention requirements.

In this study, the process optimization of PAC adsorption and potassium permanganate (KMnO 4) pre-oxidation was investigated and the mechanisms of the observed results ... and disinfection. The reason for selecting 40 mg/L as the maximum dosage is that it is the maximum dosage applied during the emergent 2-MIB events in …

However, Zhou et al. stressed that this system requires process optimization due to the high operation costs with a specific energy consumption of about 5.35 kWh/m 3. To obtain a high log reduction of microorganisms by ultrasound irradiation it is necessary to use high intensities, and this is the limiting economic factor .

Although DBPs in drinking water pose a widespread environmental exposure route to human health, pathogen inactivation and regrowth inhibition are the main goals …

The optimization of disinfection process should integrate multiple factors including applicability, the construction and operation of drinking water treatment plants, and water quality, and so on, to achieve the balance between the positives maximization and the negatives minimization. 4.

Disinfection is an essential and significant process for water treatment to protect the environment and human beings from pathogenic infections. In this study, disinfection through the generation of hydroxyl (Fenton process (FP)) and sulfate (Fenton-like process (FLP)) radicals was validated and optimized. The optimization was carried …

AbstractIn this study, response surface methodology was used to investigate the efficiency of the UV/chlorine process for ammonia removal and disinfection by-products reduction. A five-level three-factorial central composite design was employed to study the interaction of three independent variables, including the Cl/N molar ratio, UV …