Flood frequency analysis using density function of wavelet (Case study: Polroud River)

Sajad Shahabi; Masoud Reza Hessami Kermani

Volume 2, Issue 1 , March 2015, , Pages 122-130

Abstract
  In this paper we present a method to perform flood frequency analysis (FFA) when the assumption of stationary is not important (or not valid). A wavelet transform model is developed to FFA. A full series is applied to FFA using two different wavelet functions, and then a combined method is investigated. ...  Read More

Simulation of bridge pier scour depth base on geometric characteristics and field data using support vector machine algorithm

Mahdi Majedi-Asl; Rasoul Daneshfaraz; Mehdi Fuladipanah; John Abraham; Mohammad Bagherzadeh

Volume 7, Issue 2 , December 2020, , Pages 137-143

https://doi.org/10.22126/arww.2021.5747.1189

Abstract
  In this paper, two groups of datasets including Froehlich (1988) and USGS were implemented to simulate scour depth for bridge piers of three shapes (circular, sharp-nose and rectangular) using support vector machine (SVM) algorithm. The results of the SVM were compared with gene expression programming ...  Read More

The effect of HCl and H2SO4 injection to reverse osmosis on TDS and LSI for reducing fouling

Nima Asadi; Hamid Soleimanimehr; Aida Mohammad Sadegh

Volume 9, Issue 2 , December 2022, , Pages 141-146

https://doi.org/10.22126/arww.2023.8312.1271

Abstract
  Due to the quality of the water entering the water purifiers, sometimes the amount of solutes and hardness in the water is so high that after a short time, these systems become clogged or full. To solve this problem. Several methods have been proposed in this study, acid injection and its effect on reverse ...  Read More

Preparation of aldehydic electrospun PAN mats for ammonia removal from wastewater

Golshan Moradi; Farzad Dabirian; Laleh Rajabi; Ali Ashraf Derakhshan

Volume 2, Issue 2 , December 2015, , Pages 170-175

Abstract
  Novel electrospun polyacrylonitrile (PAN) nanofiber mats and PAN fabric were chemically modified by dissolved anhydrous stannous chloride diethyl ether saturated with hydrogen chloride to contain aldehyde groups on their surfaces, which are suitable for ammonium adsorption due to their high adsorption ...  Read More

Reverse osmosis design with IMS design software to produce drinking water in Bandar Abbas, Iran

Nafiseh Aghababaei

Volume 4, Issue 1 , June 2017, , Pages 314-318

https://doi.org/10.22126/arww.2017.776

Abstract
  Reverse osmosis (RO) has proven to be an efficient technique for desalination of seawater, brackish water, and reclaimed wastewater. However, the performance of RO desalination is sensitive to its design parameters and operating conditions. The purpose of this study was to modeling the removal of total ...  Read More

Differentiation of computed sum of hourly and daily reference evapotranspiration in a semi-arid climate

Bahram Bakhtiari; Mohamad Javad Khanjani; Ehsan Fadaei-Kermani

Volume 4, Issue 2 , December 2017, , Pages 358-362

https://doi.org/10.22126/arww.2017.792

Abstract
  Electronic weather stations have increased the availability of weather data for computing hourly and daily reference evapotranspiration (ETo). There is a rational question applied for different climate conditions whether the sum of hourly ETo computation may differ from direct computed daily ETo. In ...  Read More

Application of artificial neural networks for the prediction of Gaza wastewater treatment plant performance-Gaza strip

Mazen Hamada; Hossam Adel Zaqoot; Ahmed Abu Jreiban

Volume 5, Issue 1 , March 2018, , Pages 399-406

https://doi.org/10.22126/arww.2018.874

Abstract
  This paper is concerned with the use of artificial neural network and multiple linear regression (MLR) models for the prediction of three major water quality parameters in the Gaza wastewater treatment plant. The data sets used in this study consist of nine years and collected from Gaza wastewater treatment ...  Read More

Numerical simulation of the effects of downstream obstacles on malpasset dam break pattern

Hamed Azimi; Majeid Heydari; Saeid Shabanlou

Volume 5, Issue 2 , December 2018, , Pages 441-446

https://doi.org/10.22126/arww.2018.1007

Abstract
  Dam break is an important phenomenon which significantly affects the environment as well as the inhabitants of the downstream areas of the dam. In the present study, the hydraulic break of Malpasset dam as a result of sudden flooding was simulated numerically using the FLOW-3D software. The two-equation ...  Read More

The study and zoning of dissolved oxygen (DO) and biochemical oxygen demand (BOD) of Dez river by GIS software

Reza Jalilzadeh Yengejeh; Jafar Morshedi; Razieh Yazdizadeh

Volume 1, Issue 1 , March 2014, , Pages 23-27

Abstract
  Pollution sources into the water, the necessity of qualitative studies of water resources is one of the most important new challenges for mankind in almost every parts of the world. Dissolved oxygen (DO) and Biochemical Oxygen Demand (BOD) are among parameters of water quality indexes which are considered ...  Read More

Removal of sulfate from Gamasiab river water samples by using natural nano-Clinoptilolite

Amir Hossein Salimi; Sayed Farhad Mousavi; Saeed Farzin

Volume 6, Issue 1 , January 2019, , Pages 39-44

https://doi.org/10.22126/arww.2019.1133

Abstract
  Rivers serve as one of the main sources of water supply. Human activities, salts in the soil and rocks and urban runoffs, as well as air contaminants, lead to contamination of river water. In this research, Gamasiab river, which is the upstream of Karkheh river, was selected as a case study. Sixteen ...  Read More

Feasibility study of using UV/H2O2/O3 advanced oxidation in phenol removal from petrochemical wastewater

Mohammad Beidaghdar; Ebrahim Fataei; Behnam Khanizadeh; Ali Akbar Imani

Volume 9, Issue 1 , June 2022, , Pages 40-45

https://doi.org/10.22126/arww.2022.7787.1249

Abstract
  Pollution from industrial effluents is more diverse and complex than municipal wastewater due to the use of thousands of new chemical compounds in industry every year. Subsequent introduction of small quantities of these compounds into water streams through industrial effluents has complicated water ...  Read More

An approach to reduce water consumption by optimizing and determining of crop cultivation pattern using meta-heuristic algorithms: A case study on Moghan plain

Yahya Choopan; Somayeh Emami

Volume 7, Issue 1 , June 2020, , Pages 48-56

https://doi.org/10.22126/arww.2020.4076.1119

Abstract
  Optimizing the crop cultivation pattern, in order to reduce water consumption, in arid and semi-arid regions such as Iran, due to water scarcity and food intake, is an essential solution for food intakes needs. Optimizing the crop cultivation pattern, in order to reduce water consumption, in arid and ...  Read More

Effects of curvature submerge vane in efficiency of vortex settling basin

Amin Hajiahmadi; Mojtaba Saneie; Mehdi Azhdari Moghadam

Volume 1, Issue 2 , June 2014, , Pages 80-85

Abstract
  In this century due to population growth, the use of river water has become more complicated. Since most rivers pass across loose and erodible areas, they always act as the most important factor of transferring eroded materials from the solid crust of the earth.  Vortex basins are among the solutions ...  Read More

Comparison of the performance of stochastic models in the generation of synthetic monthly flows data: A case study on Marun river

Mostafa Bayesteh; Arash Azari

Volume 6, Issue 2 , July 2019, , Pages 117-125

https://doi.org/10.22126/arww.2019.1405

Abstract
  One of the most important issues in planning and managing water resources is the accurate estimation of monthly input discharge of the reservoirs in the future years, which is always associated with uncertainty. To cover these uncertainties, synthetic stream flow data generation models have been used ...  Read More

Long-term assessment of water quality and soil degradation risk via hydrochemical indices of Gharasoo River, Iran

Akram Fatemi

Volume 2, Issue 1 , March 2015, , Pages 131-136

Abstract
  The suitability of Gharasoo River water for irrigation uses was evaluated in Kermanshah city, Iran. Long-term datasets including major cations, anions and other parameters such as electrical conductivity (EC), total dissolved solids (TDS) were analyzed. Sodium absorption ratio (SAR), magnesium ratio ...  Read More

Assessment of the quality and quantity of groundwater in Bahadoran plain using neural network methods, geostatistical and multivariate statistical analysis

Mohammad Sadegh Talebi; Mehran Fatemi

Volume 7, Issue 2 , December 2020, , Pages 144-151

https://doi.org/10.22126/arww.2021.4367.1134

Abstract
  Growing water demand in various sectors including agriculture, industry, drinkingwater and eventually increasing production and risk of pollution have imposedmounting pressure on water resources. The relative stability of renewable waterresources makes it necessary to pay special attention to the conservation ...  Read More

Enhancement in performance and self-cleaning properties of PES membrane surface tailored by modified TiO2

Mina Doltshah; Ali Akbar Zinatizadeh; Sirus Zinadini; Hadis Zangeneh; Shohreh Azizi; Mohamed Abdulgader; Malik Maaza

Volume 9, Issue 2 , December 2022, , Pages 147-153

https://doi.org/10.22126/arww.2022.8206.1267

Abstract
  In this study, the polyethersulfone (PES) membranes were established by surface modification using C, N codoped-TiO2/WO3 (LTW) photocatalytic nanocomposite to amelioration of the membrane performance in terms of antifouling and self-cleaning properties. The nanocomposite membranes were characterized ...  Read More

Synthesis of Fe3O4@silica core–shellparticles and their application for removal of copper ions from water

Mohammad Eisapour Chanani; Nader Bahramifar; Habibollah Younesi

Volume 2, Issue 2 , December 2015, , Pages 176-182

Abstract
  The main objective of this study was to synthesize an environmentally friendly nano-structural adsorbent. These nano magnetic particles can be applied to remove heavy metal ions from industrial wastewater because the surface of the particles is covered with SiO2, and the SiO2 is inactive and can adsorb ...  Read More

Advanced oxidation processes treating of Tire Cord production plant effluent: A comparative study

Maryam Habibi; Ali Akbar Zinatizadeh; Mandana Akia

Volume 4, Issue 1 , June 2017, , Pages 319-330

https://doi.org/10.22126/arww.2017.777

Abstract
  The degradation of an industrial wastewater (Tire Cord factory) with low BOD5/COD ratio (0.1-0.2) was investigated using advanced oxidation processes (AOPs) (i.e. hydrogen peroxide, UV/H2O2, O3/H2O2 and UV/O3/H2O2 treatments). In order to investigate the effects of influential variables on the process ...  Read More

Numerical simulation of prevention of saltwater intrusion in panama channel by using of bubble curtain system

Mehdi Nezhad Naderi; Omid Zolfaghari

Volume 4, Issue 2 , December 2017, , Pages 363-369

https://doi.org/10.22126/arww.2017.800

Abstract
  A bubble curtain is a system that produces bubbles in a deliberate arrangement inwater. The technique is based on bubbles of air (gas) being let out under thewater surface, commonly on the bottom. When the bubbles rise they act as abarrier, a curtain for prevention of the spreading of particles and othercontaminants. ...  Read More

Preparation and characterization of PES nanofiltration membrane embedded with modified graphene oxide for dye removal from algal wastewater

Negin Shaabani; Sirus Zinadini; Ali Akbar Zinatizadeh

Volume 5, Issue 1 , March 2018, , Pages 407-410

https://doi.org/10.22126/arww.2018.891

Abstract
  The present work was concentrated to study the ability of nanofiltration membrane as a treatment method of algal colored wastewater discharge from Islamabad refinery, Kermanshah, Iran. The polyether sulfone nanofiltration membrane was modified with sodium dodecyl sulfate (SDS) as an anionic surfactant ...  Read More