مدیریت پایدار و توأمان منابع و مصارف آب در صنایع
text
article
2017
per
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
2
2
https://www.jwwse.ir/article_65584_c2452f3cd3d3e2c863c7c301297043a9.pdf
Comparison between Nanotechnology and Other Mehods for Removal Cypermethrin Pesticide in Contaminated Water
bahareh
karimi
west tehran university
author
text
article
2017
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A large variety ofpesticides are used for killing plant pests in the country and cypermethrin is the most common insecticide in the synthetic pyrethroid family. The entrance into drinking water resources by resistant pollutants can have negative impacts on human health and the environment. Currently, the control of pesticides in groundwater, drinking water and surface water is a serious subject. This paper reviews the previous studies concerning removal methods for cypermethrin pesticides. In recent years, scientists have been tried to design and develop new technologies for removing such pesticides. These include nanotechnology, which has many advantages in comparison to previous methods. The advantages of nanotechnology include effective removal of contaminants, lowering of energy, eco-friendliness and cost-effectiveness in the production of healthy and high-quality water. It is found that nanotechnology is highly efficient in eliminating cypermethrin from water as collagen-CuO nanoparticles can eliminate over 90% of cypermethrin in a short period. The study also provides a comparison between nanotechnology and other methods of removing cypermethrin from contaminated water.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
3
13
https://www.jwwse.ir/article_65583_9732bb7c421b98a450afb20f6194b41a.pdf
dx.doi.org/10.22112/jwwse.2018.82702.1001
Chemical Oxygen Demand (COD) Estimation in Petrochemical Industry Wastewater Effluent via Robusted Regression
Milad
Abuzari
M.Sc., Faculty of Environmental Eng., Tehran University, Tehran, Iran.
author
Gholamreza
Nabi bidhendi
Professor, Faculty of Environmental Engineering, University of Tehran, Tehran, Iran.
author
Parham
Pahlavani
Assistant Professor, Faculty of Surveying Engineering , University of Tehran, Tehran, Iran.
author
text
article
2017
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In order to increase the quality of industrial wastewater treatment and better manage of them, their approach should be simple and accurate for estimating process. Treatment processes for black box systems are due to the influence of many factors that involved in the system. Because of problems in using physical models, the use of statistics and regression methods could be helpful. Therefore, whatever model is simpler and less input variables so the model will be more important. Influent of the proposed model includes output data of biological unit and effluent is chemical oxygen demand of the clarifier. To compare the models performance three indicators of R-square, Correlation Coefficient(R) and Mean Square Error (MSE) are used. The aim of this study is creating linear data mining model and comparing them with similar methods for quality data. Finally, a linear robust regression with MSE = 0.089054, R = 0.784727 and R-Square = 0.6096 is proposed.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
14
23
https://www.jwwse.ir/article_65585_dd239068e7d1d7eaa703bd5f439f1aea.pdf
dx.doi.org/10.22112/jwwse.2018.87485.1002
Evaluation of Floating Diesel Fuel Removal from Water by Using Ferrate(VI) Oxidation Method
Amirreza
Talaiekhozani
Department of Civil Engineering, Jami Isntitute of Technology, Isfahan, Iran
author
Marzieh
Bagheri
Department of Chemical Engineering, Jami Institute of Technology, Isfahan, Iran
author
Tahereh
Ghorbani
Department of Chemical Engineering, Jami Institute of Technology, Isfahan, Iran.
author
Mahsa
Ami
گروه مهندسی شیمی موسسه آموزش عالی جامی، اصفهان، ایران
author
text
article
2017
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Although several studied have been carried out to use ferrate (VI) for wastewater treatment, there is no study on removal of floating diesel fuel from water by using ferrate (VI) oxidation process. The aim of this study is to remove floating diesel fuel from water by using ferrate (VI) oxidation process. In this study electrochemical method is utilized to generate ferrate (VI). With changing hydraulic retention time (HRT), pH and ferrate (VI) concentration, the optimum conditions of diesel fuel removal are determined. The results show that the optimum HRT for diesel fuel removal from water by using ferrate (VI) oxidation process is 10 min. Although increasing of HRT to more than 10 min can increase the performance of diesel fuel removal, this increment is not significant. The usage of ferrate (VI) in the range of 0.05 to 20 mg/L is able to remove 90 to 100% of diesel fuel from water. Acidic environment is the optimum condition for diesel fuel removal by ferrate (VI) oxidation process. However, decreasing pH to acidic condition do not have a big effect on the diesel fuel removal. This study reveals that diesel fuel can be removed by using ferrate (VI) oxidation process with high efficiency. However, more studies are needed to understand whether removal of diesel fuel by using ferrate (VI) oxidation process is an economic process.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
24
30
https://www.jwwse.ir/article_65586_d4154edbe5b165ef3dc99866e340add0.pdf
dx.doi.org/10.22112/jwwse.2018.88763.1013
Replacing "Water Hygiene" Managemet Model with "Water Quality Engineering" Model, A Strategy for More Efficient Management of Potabale Water Supply and Distribution
majid
ghannadi
consultant of Deputy of Engineering & Development
l water & waste water engineering company
author
text
article
2017
per
Water quality is subject to judgement by three components: the protection of public health, public acceptance and impact on the acceptability and durability of facilities. In modern times, extraction of water resources before they are restored with a lack of discipline and regulations for efficient management of pollutants and protection of water has accelerated the deterioration of water quality and has caused unwanted changes in water resources. However, the social demand regarding the issue of water quality has extended beyond being healthy and having effect on public to areas of social satisfaction and facility protection. In such circumstances, water sanitation units in water companies will not be able to meet the demand of the public on the issue of water quality with traditional structure inspired by health institutions which judges the quality of water on aspects of its effect on the public health, so it is necessary for them to replace "water hygiene" model with "water quality engineering" model, considering the favorable idealistic horizon and having an evolutionary view. In this model, water quality engineer presents the best and most accurate inferences with a complete knowledge of the scientific principles and with the requirements of adaptive management, from raw data, laboratory indicators of efficient management, extraction and taking into account economic orders, risk assessment and technical and social requirements. Giving his opinion in decisions related to designing treatment processes and structures, storage and transport of water and selection of materials, he realizes the idea of engineering water quality.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
31
40
https://www.jwwse.ir/article_65587_8d6d0a2172dd8e67eb7f2e9a928798a4.pdf
dx.doi.org/10.22112/jwwse.2018.87712.1016
A Review on Chemical Coagulation Process for Removal of Heavy Metals from Water
farhad
salimi
Assistant Prof. Islamic Azad University , Kermanshah Branch
author
text
article
2017
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Heavy metal pollution has become one of the most urgent environmental issues, which also poses a potential threat to the human health. This article is suggested to review the advance on the performance of chemical coagulation process in removing heavy metal from water. Chemical coagulation process is considered to be a valid method which is determined by the hydrolyzed species of the inorganic coagulants under different raw water and coagulation conditions. The main mechanisms of the removal of heavy metals are adsorption, complexation and co-precipitation. Compared with the aluminum-based coagulants, the iron based coagulants have better performance due to the use of wide pH range and large surface area of the resulting flocs. During the chemical coagulation process, the valence state of arsenic and antimony could affect the removal efficiency. Thus, the oxidants and reductants are often combined with inorganic coagulants used in this process. It is found that pH is an important factor greatly influencing the performance directly or indirectly. The complex resulting from the interaction between the inorganic/organic pollutant and inorganic coagulant may contribute to the removal of heavy metals. Overall, chemical coagulation is an effective way to control heavy metal pollution with/without other water treatment technologies.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
41
53
https://www.jwwse.ir/article_65588_44d9221e87ea1079cfafa9882be824a6.pdf
dx.doi.org/10.22112/jwwse.2018.91145.1033
Investigation and Analysis of Thesis Related to Water and Wastewater (Case Study: University of Tehran)
Elham
Ghaemi
Civil Engineering Department, Engineering Faculty, University of Tehran, Tehran, Iran
author
Massoud
Tabesh
Professor, School of Civil Engineering, College of Engineering, University of Tehran
author
Anahita
Pourmohamadi
Civil Engineering Department, Engineering Faculty, University of Tehran, Tehran, Iran
author
text
article
2017
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Investigation and research, which are essential for economic growth, are integral parts of industrial activities and also the basic needs of dynamic industries. In an efficient research, the process of study is always important and the industry faces challenges and obstacles such as opportunity lose and energy that was spent through it. Therefore, the optimization of the process and the way of research and also the agility of the related stages are necessity of a successful research. In this study, it is tried to investigate the process of research in universities of the country (case study: University of Tehran) and identify barriers of investigation and research in the field of water and wastewater. The purpose of this paper is to study the main and structural issues of the inefficiencies of research in advancing the goals of the industry. Some of these factors are lack of an effective research system, lack of dynamic linkages between industry and universities, lack of definition of scientific problems for universities, lack of effective knowledge management system and scientific exchanges, inadequate research credit, inadequate structure of education system and inappropriateness with the need of industry, the structure of government agencies, and so on. After reviewing and recognizing the disadvantages structure of the academic research system, appropriate solutions are found to eliminate defects and use the results of the research. It is attempted to make the proposed solutions, in spite of generalization, consistent and relevant to the research of active areas in the field of the environment, especially water and sewage.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
54
60
https://www.jwwse.ir/article_65589_247d259fa05494cb110bf2b479ae973d.pdf
dx.doi.org/10.22112/jwwse.2018.96279.1043
Investigating the Feasibility of Discharging the Sludge of the Water Treatment Plant into Sewage Network and its Effect on the Wastewater Treatment Process
Hamed
Rasouli Sadabad
Department of Civil, Water and Environmental Engineering, Shahid Beheshti University A.C., Tehran, Iran
author
Zohreh
Ekhtiarzadeh
Tehran Sewerage Company, Tehran, Iran
author
text
article
2017
per
The generated sludge during regular water treatment processes is one of the most important residues of the water treatment plants, which is produced daily in the noticeable amounts. The main purpose of this study is feasibility study of discharging this sludge into municipal wastewater system containing the wastewater collection and transmission network and the treatment plants, with the aim of its effective environmental management via prohibiting its direct discharge into the environment in one hand, and benefiting its advantages in the mentioned system.
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
61
63
https://www.jwwse.ir/article_65610_5c21652d5cb62f13aae96b71b1a5af23.pdf
Interview
text
article
2017
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Interview
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
64
70
https://www.jwwse.ir/article_65611_436d0d2e9ead98ea2cd604172a5da525.pdf
Best Technology
text
article
2017
per
Best Technology
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
71
73
https://www.jwwse.ir/article_65612_21610cfb21af1ee58491311af732d2bc.pdf
Book Presentation
text
article
2017
per
Book Presentation
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
74
75
https://www.jwwse.ir/article_65613_5f8c0e8bdbc9b18ec838a2a64c371a38.pdf
Best Thesis
text
article
2017
per
Best Thesis
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
76
77
https://www.jwwse.ir/article_65614_d5a7c35f5e55f5c2b7efe2053756778f.pdf
Idea Recall
text
article
2017
per
Idea Recall
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
77
77
https://www.jwwse.ir/article_65615_aadfc042374e211ff1529684a96ad496.pdf
News
text
article
2017
per
News
Journal of Water and Wastewater Science and Engineering
انجمن آب و فاضلاب ایران
2588-3941
2
v.
4
no.
2017
78
98
https://www.jwwse.ir/article_65616_63486a0caca39428bd8b773f6270af7f.pdf