scholarly journals Removal Efficiency of Solid Particles from Raw Water Using AFM Grade-2 Media: Case Study

2018 ◽  
Vol 09 (03) ◽  
Author(s):  
Sami M Al Aibi ◽  
Jamal S Al Rukabie ◽  
Adel O Sharif ◽  
Dhia Y Aqar ◽  
Hameed B Mahood ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Solid Particles ◽  
Raw Water

Advanced treatment for taste and odour control in drinking water: case study of a pilot scale plant in Seoul, Korea

2007 ◽  
Vol 55 (5) ◽  
pp. 111-116 ◽  
Author(s):  
W.H. Joe ◽  
I.C. Choi ◽  
Y.A. Baek ◽  
Y.J. Choi ◽  
G.S. Park ◽  
...  
Keyword(s):  
Drinking Water ◽  
Removal Efficiency ◽  
Tap Water ◽  
Pilot Scale ◽  
Chlorine Concentration ◽  
Advanced Treatment ◽  
Raw Water ◽  
Han River ◽  
Odour Control

Taste and odour problems of tap water in Seoul are attributed to 2-methylisoborneol (2-MIB) and trans-1,10-dimethyl-trans-9-decalol (geosmin), which are the result of metabolism of algae and chlorine for disinfection. This study was carried out to measure 2-MIB and geosmin in the raw water from the Han River, to investigate removal efficiency of GAC and BAC integrated with post-ozonation, and to minimise and quantify the required chlorine concentration as a final disinfectant through the candidate process.

Natural organic matter from catchment to drinking water: a case study of Pori waterworks, Finland

2008 ◽  
Vol 8 (6) ◽  
pp. 681-690 ◽  
Author(s):  
H. M. Szabo ◽  
I. Lindfors ◽  
T. Tuhkanen
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Natural Organic Matter ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Raw Water ◽  
Lake Waters ◽  
Molecular Weight Fractions ◽  
Uv And Fluorescence Detection

In this study Natural organic matter (NOM) characteristics and variations of catchment samples (brooks and collector lakes) from Western Finland, and drinking water produced from the same catchment were examined. Seasonal and spatial NOM variations were followed by means of DOC and HPLC-SEC with UV and fluorescence detection. NOM decreased from drains to lakes by 35 to 75% and from drains to drinking water by 73 to 94%. Drains had a higher NOM content in summer and a lower NOM content in winter and spring. Lakes showed inverse patterns and had a higher NOM content in winter and spring and a lower NOM content in summer. HPLC-SEC separated 8 molecular weight fractions. In drains the HMW fractions represented up to 80% of the NOM, in lake waters HMW fractions accounted for 50 to 70% of the NOM. In drinking water IMW fractions dominated. Increased NOM in raw water during winter was associated with increased IMW fractions and the appearance of HMW fractions in drinking water, DOC increasing from 1.4 mg C/L in summer to 5.8 mg C/L in winter. SPH-Tryptophan correlated with the dissolved organic nitrogen and DOC of the samples. The drain affected by agriculture generally presented higher SPH-Tryptophan values than the unaffected drain.

Research on Blue-Algae Removal from Eutrophication Water by Modified Clay

2010 ◽  
Vol 150-151 ◽  
pp. 178-182
Author(s):  
Li Ping Wang ◽  
Lei Lu ◽  
Nai Yuan Gao ◽  
Xia Xu ◽  
Yong Yin Zhang ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Rapid Development ◽  
Source Water ◽  
Raw Water ◽  
Chl A ◽  
Modified Clay ◽  
Algae Removal ◽  
Lake Type

In recent years, the problem of contaminated source water is increasingly outstanding with the rapid development of industry，agriculture and population. Especially, the eutrophication of river and lake is severer. The modified clay was studied to remove algae in lake type raw water in which average concentrations of turbidity, TN, TP and Chl-a were 33NTU, 4.002 mg/L, 0.263mg/L and 29.02 mg/m3. The results showed that the average removal efficiency of turbidity, TN, TP and Chl-a were 88.53%、26.61%、87.45% and 87.97% respectively when the dosage of modified clay was 0.8 g/L.

Zeolite and short-cut fiber-based wet-laid filter media for particles and heavy metal ion removal of wastewater

2019 ◽  
pp. 152808371986693
Author(s):  
Kyung Chul Sun ◽  
Jung Woo Noh ◽  
Yeong Og Choi ◽  
Sung Hoon Jeong ◽  
Yeon Sang Kim
Keyword(s):  
Removal Efficiency ◽  
Metal Ion ◽  
High Efficiency ◽  
Solid Particles ◽  
Filter Media ◽  
Main Layer ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Heavy Metal Ion Removal ◽  
Efficiency Rate

As development of industrialization grows constantly, the purification of hazardous solid particles and ions is one of the most important topics in environment and ecosystem. In this report, we designed and developed a novel and advanced type of filter media for the removal of both solid particles and hazardous ions, we choose Cs+ and Ca2+ here, by enclosing zeolite in wet-laid nonwoven media. The performance of the prepared filter media was evaluated by continuous sorption experiments, which were followed by solid particles and ion-removal efficiency studies. The prepared filter media showed excellent uniformity. The prepared filter media exhibited a solid removal efficiency rate which ranged from 80 to 82%, and the initial removal efficiency of ions exceeded 99%. These values are in effect as the main layer in the completed liquid filter media and for the next step to prepare the completed multi-layered liquid filter units. The results here suggest that this novel filter media can be used in high-efficiency and multi-functional liquid filter units for residential and industrial engineering.

Tertiary ozonation of industrial wastewater for the removal of estrogenic compounds (NP and BPA): a full-scale case study

2013 ◽  
Vol 68 (3) ◽  
pp. 567-574 ◽  
Author(s):  
G. Bertanza ◽  
M. Papa ◽  
R. Pedrazzani ◽  
C. Repice ◽  
M. Dal Grande
Keyword(s):  
Removal Efficiency ◽  
Industrial Wastewater ◽  
Treatment Plant ◽  
Endocrine Disrupting Compounds ◽  
Full Scale ◽  
Residual Content ◽  
Endocrine Disrupting ◽  
Treatment Stage ◽  
Flow Rate Increase

Wastewater treatment plant (WWTP) effluents are considered to be a major source for the release in the aquatic environment of endocrine-disrupting compounds (EDCs). Ozone has proved to be a suitable solution for polishing secondary domestic effluents. In this work, the performance of a full-scale ozonation plant was investigated in order to assess the removal efficiency of four target EDCs: nonylphenol, nonylphenol monoethoxylate, nonylphenol diethoxylate and bisphenol A. The studied system was the tertiary treatment stage of a municipal WWTP which receives an important industrial (textile) load. Chemical analyses showed that the considered substances occurred with a significant variability, typical of real wastewaters; based on this, ozonation performance was carefully evaluated and it appeared to be negatively affected by flow-rate increase (during rainy days, with consequent contact time reduction). Moreover, EDCs' measured removal efficiency was lower than what could be predicted based on literature data, because of the relatively high residual content of biorefractory compounds still present after biological treatment.

Pretreatment of Micro-Polluted Raw Water by Parallel Process of Photocatalysis-Biological Contact Oxidation

2011 ◽  
Vol 374-377 ◽  
pp. 851-854
Author(s):  
Ying Qing Guo ◽  
Chun Sheng Lei ◽  
Er Deng Du
Keyword(s):  
Removal Efficiency ◽  
Ph Value ◽  
Reference Value ◽  
Parallel Process ◽  
Biological Oxidation ◽  
Raw Water ◽  
Practical Engineering ◽  
Contact Oxidation ◽  
Biological Contact Oxidation ◽  
Engineering Projects

By using parallel process of photocatalysis-biological contact oxidation, a research on the pretreatment effect of micro-polluted raw water was conducted. The result indicates that the changes of HRT and the initial concentration take significant impact on the removal of NH3-N. 60min is the best residence time for the pretreatment. Once the thickness of composite media is 120mm, the removal efficiency of CODMn may reach as much as 15.55%, while the average removal efficiency of turbidity is 20%. Since the nitration reaction consumes certain amount of alkalinity, the pH value of outlet water is lower than inlet water. When employing parallel process, biological oxidation and photocatalysis are performed and finished in the same reactor simultaneously, conducing to maintaining a moderate level of the removal of CODMn and NH3-N. All these are of reference value for its application in practical engineering projects.

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