scholarly journals Assessment of the value of NOM treatment processes based on a matter-element model

2016 ◽  
Vol 17 (3) ◽  
pp. 870-878
Author(s):  
Yue Zhang ◽  
Sen Peng ◽  
Xin-hua Zhao
Keyword(s):  
Drinking Water ◽  
Treatment Process ◽  
Rough Set Theory ◽  
Evaluation Model ◽  
Drinking Water Treatment ◽  
Element Model ◽  
Weighting Factor ◽  
Technology Application ◽  
Treatment Processes ◽  
Matter Element Model

Research into natural organic matter (NOM) removal in drinking water treatment processes is mostly independent, distributed, disconnected and unable to meet the needs of technology application; therefore, an assessment of the value of NOM treatment processes is necessary. In this paper, a hybrid evaluation model based on rough set theory and a matter-element model was used to evaluate the value of eight NOM removal processes. The counting process of the weighting factor did not include any subjective information which avoided the artificial factor deviation and made the evaluation more objective. The result indicated that in addition to the MIEX + coagulation + sedimentation + filtration (MCSF) treatment process, the rest of the NOM treatment processes had a certain value; the coagulation + sedimentation + filtration + adsorption (CSFA) and coagulation + sedimentation + filtration + membrane (CSFM) treatment processes had the highest values which meant that these treatment processes could remove the NOM in drinking water effectively. It also illustrated that the coagulation + sedimentation + adsorption + membrane (CSAM) treatment process had high feasibility, which has important significance for guaranteeing the safety of drinking water.

Removal of pesticides during the drinking water treatment process at Florence water supply, Italy

1999 ◽  
Vol 48 (5) ◽  
pp. 177-185 ◽  
Author(s):  
O. Griffini ◽  
M. L. Bao ◽  
D. Burrini ◽  
D. Santianni ◽  
C. Barbieri ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Process ◽  
Drinking Water Treatment ◽  
Water Treatment Process

scholarly journals OPTIMIZATION OF THE DRINKING WATER TREATMENT PROCESS OF A SUGAR PLANT STATION IN COTE DIVOIRE

2021 ◽  
Vol 9 (01) ◽  
pp. 512-524
Author(s):  
Konan Lopez Kouame ◽  
◽  
Nogbou Emmanuel Assidjo ◽  
Andre Kone Ariban ◽  
◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Treatment Process ◽  
Polynomial Regression ◽  
Drinking Water Treatment ◽  
Optimal Dose ◽  
Raw Water ◽  
Water Treatment Process ◽  
Jar Test ◽  
Coagulation And Flocculation

This article presents an optimization of the drinking water treatment process at the SUCRIVOIRE treatment station. The objective is to optimize the coagulation and flocculation process (fundamental process of the treatment of said plant)by determining the optimal dosages of the products injected and then proposes a program for calculating the optimal dose of coagulant in order to automatically determine the optimal dose of the latter according to the raw water quality. This contribution has the advantage of saving the user from any calculations the latter simply enters the characteristics of the raw effluent using the physical interface of the program in order to obtain the optimum corresponding coagulant concentration. For the determination of the optimal coagulant doses, we performed Jar-Test flocculation tests in the laboratory over a period of three months. The results made it possible to set up a polynomial regression model of the optimal dose of alumina sulfate as a function of the raw water parameters. A program for calculating the optimal dose of coagulant was carried out on Visual Basic. The optimal doses of coagulant obtained vary from 25, 35, 40 and 45 mg/l depending on the characteristics of the raw effluent. The model obtained is: . Finally, verification tests were carried out using this model on the process. The results obtained meet the WHO drinkability standards for all parameters for a settling time of two hours.

scholarly journals Occurrence and Removal Characteristics of Phthalate Esters from Typical Water Sources in Northeast China

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Yu Liu ◽  
Zhonglin Chen ◽  
Jimin Shen
Keyword(s):  
Drinking Water ◽  
Northeast China ◽  
Phthalate Esters ◽  
Drinking Water Treatment ◽  
Water Source ◽  
Mean Value ◽  
Source Control ◽  
Water Ingestion ◽  
Treatment Processes ◽  
Harbin City

The presence of phthalate esters (PAEs) in the environment has gained a considerable attention due to their potential impacts on public health. This study reports the first data on the occurrence of 15 PAEs in the water near the Mopanshan Reservoir—the new and important water source of Harbin city in Northeast China. As drinking water is a major source for human exposure to PAEs, the fate of target PAEs in the two waterworks (Mopanshan Waterworks and Seven Waterworks) was also analyzed. The results demonstrated that the total concentrations of 15 PAEs in the water near the Mopanshan Reservoir were relatively moderate, ranging from 355.8 to 9226.5 ng/L, with the mean value of 2943.1 ng/L. DBP and DEHP dominated the PAE concentrations, which ranged from 52.5 to 4498.2 ng/L and 128.9 to 6570.9 ng/L, respectively. The occurrence and concentrations of these compounds were heavily spatially dependent. Meanwhile, the results on the waterworks samples suggested no significant differences in PAE levels with the input of the raw waters. Without effective and stable removal of PAEs after the conventional drinking water treatment in the waterworks (25.8% to 76.5%), the risks posed by PAEs through drinking water ingestion were still existing, which should be paid special attention to the source control in the Mopanshan Reservoir and some advanced treatment processes for drinking water supplies.

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