منابع آب

Open Access Article

1 - A Review of Arsenic Removal Methods from Water Resources
Marzieh Hasanzadeh Fariba Ostovar

10.29252/.4.6.39

Many of the pollutants in water are known to be harmful for human health and toxic for environment. Among these pollutants, Arsenic is more important because millions of people are exposed to contaminated drinking water. The World Health Organization (WHO) has identifie More

Many of the pollutants in water are known to be harmful for human health and toxic for environment. Among these pollutants, Arsenic is more important because millions of people are exposed to contaminated drinking water. The World Health Organization (WHO) has identified the permitted limit of below 0.01 mg/L (10 micrograms per liter) for arsenic in drinking water and the same amount for arsenic has been reported in Iran's 1053 standard. In this study, various techniques have been investigated for removing Arsenic and efficiency of different nanoparticles in treatment of Arsenic from drinking water. Common methods of removing Arsenic from water sources are including oxidation, coagulation and flocculation, reverse osmosis and ultrafiltration, ion exchange, phytoremediation and new technologies based on the use of nanoparticles. The findings showed that despite of the high arsenic removal percentage using different methods such as oxidation, ion exchange and floating with dissolved air, these methods are not economic and a lot of time is required to achieve optimal efficiency. Recently, the use of nanoparticles has become very popular, so that metal oxide nanoparticles such as magnetic iron, Zinc, Copper, Serum, and Aluminum can completely eliminate Arsenic soluble with a high concentration of 50 mg/L in water sources and after the adsorbent is saturated, it is possible to use the regeneration of adsorbents, repeatedly by adsorbing the pollutant into the adsorbent. As a result, the use of nanoparticles is better than chemical processes and is economic due to their high efficiency in a short time. Manuscript profile

Open Access Article

2 - Rural migration impact on food security with emphasis on water resources (Case study: villages of Khansar city in Isfahan province)
hamidehsadat aghamiri

The present study was conducted to investigate the impact of water crisis on rural migration and food security in rural place in Khansar. Statistics show that in recent years, the decline in rural water resources has led to an increase in immigration in the area, red More

The present study was conducted to investigate the impact of water crisis on rural migration and food security in rural place in Khansar. Statistics show that in recent years, the decline in rural water resources has led to an increase in immigration in the area, reducing the rural farmer's population and affecting the level of production and food security. Accordingly, the main question of this research is whether rural immigration from water resources is a threat to global food security? To answer this question, considering the regional attitude of the research, firstly, the status of rural water resources in these areas and the province was investigated and further the various definitions of food security were evaluated. According to theories and research indicators, 5 villages from 3 districts of central Khansar were randomly selected. Immigration index along with food security has been investigated and due to the close relationship between food security and agriculture, the social and economic conditions of villagers in this section have been considered. This indicator includes the goals and age of immigration, the environmental, economic and social conditions of rural migrants. The results of the study showed that more than 60% of immigration is migratory to rural areas where young people are at the top. Therefore, the decline in workforce in rural society and gender differences due to the high percentage of men migrating to women was the main outcome of the status of water dependent migration in rural areas. According to the results, despite the close relationship between agriculture and food security, the increase in rural migration due to water has reduced the production capacity of the villages and poses a serious threat to food security. This research is a reminder that has been done using descriptive-analytic method and considering the impact of this migration on economic conditions, the study of economic theory in this section is at the forefront. The conclusion of this study is based on the correlation coefficient of Kendall. Manuscript profile

Open Access Article

3 - Assessing the Remedy Policies of “Urmia Lake” Basin Crises By A System Dynamics Approach
علیرضا لاری جابر مهرکار mir saman pishvaee

The Urmia Lake is the greatest lake in Iran and the second saline lake in the world. This ecosystem contains a wide numbers of animals and plants. Urmia Lake has placed in the northwest of Iran and has economical, social and environmental importance for local people. Un More

The Urmia Lake is the greatest lake in Iran and the second saline lake in the world. This ecosystem contains a wide numbers of animals and plants. Urmia Lake has placed in the northwest of Iran and has economical, social and environmental importance for local people. Unfortunately, in recent years, various and complex problems have decreased the level of water in Urmia Lake strongly and deteriorate the future life of this lake significantly. However, in the last decade, more than half of the lake area has changed to the salt plains. Many researches address the Urmia Lake crises in recent years; however, most of them are unable to model the dynamism of Urmia basin as a whole system in long-term period. In this paper, the critical factors affecting the reduction of Urmia Lake water level are defined. In addition, a system dynamics model, which is able to illustrate the behavior of the whole system of Urmia Lake, is proposed. The developed model is validated through comparison analysis and the derived results show the high accuracy (around 97%) of the proposed model. Three policies are proposed and evaluated to increase the water inflow and Lake level. The simulation results show that the hybrid policy has more efficiency than the other ones. Also, a prediction of Urmia Lake volume is proposed based on model till 1405. Manuscript profile

Open Access Article

4 - Future Proofing Model of the Sustainable Water Resource Management based on the Scenario Planning Approach- Case Study: Golestan Province
Seyed Mansour Rahim Hoseini Aliakbar Hasani

Water resources have always been the focal point of the civilizations and urbanities formation. Human societies, at the early age until now, have been initiated around these resources. Therefore the preservation of the water resources for the next generation and correct More

Water resources have always been the focal point of the civilizations and urbanities formation. Human societies, at the early age until now, have been initiated around these resources. Therefore the preservation of the water resources for the next generation and correct exploitation, play a crucial role in sustainability and extension of civilizations. Then, most of the experts believe that wars at the 21th century are about clean and pure water resources. In these days, because of excessive increase in environment uncertainty, the traditional planning approaches/methods have lost their usefulness. To confront these uncertainties and at the age of Cold War, scenario planning established as one of the future proofing approaches/methods. In scenario planning, against the traditional planning methods, the future has not seen as the extension of the past, on the contrary, general environmental drivers and forces form the future state of a system. Considering the uncertainities in water resource management,this article has tried to use scenario planning approach for future proofing, finding driving forces that shape the future state of water resources in the Golestan province and then determined the crucial drivers by interview with the experts of strategic management and water resource planning fields. All possible scenarios have been written and at the end, for managing water resources in stable ways, strategies and course of actions have presented. Manuscript profile

Open Access Article

5 - Rules Governing Use of Water Resources During Armed Conflicts
Ebrahim Rahmani Seyed Davood Aghaee Siyamak Moazeni

Human’s impacts on his perimeter environment are reached to a level that has gotten global essence and importance. The human beings existence and his health are depending on safe and pure environment. Fundamental mission of United Nation's Organization is to save future More

Human’s impacts on his perimeter environment are reached to a level that has gotten global essence and importance. The human beings existence and his health are depending on safe and pure environment. Fundamental mission of United Nation's Organization is to save future generations from scourge of war and UNESCO main goal is to assist in order to save peace and security through expansion of cooperation between nations by taking assistance from culture, science and education. During recent century, numerous international and non-international conflicts is targeting the most vital external element of mankind survival by many aggressions and made man engagment to itself. From the beginning of human civilization, water management is the main challenge of mankind and water as the first source of life, has limited human and economical communities. In 21 Century, managing and saving water sources (rivers, installations and subterranean waters) need common ambition in hostility time. Therefore in July 2010, General Assembly added a new right to human rights covenant called “public right of accessibility to clean water” and it announced decade of 2005 to 2015 as water decade with the motto of “Water, Third Millennium Treasure”. The aim of the article is to review the subject that human rights are consist of principles and rules that are observing on the method of supporting and saving water in all of its forms like rivers, water installations and underground sources and how military forces face to this resuscitative material. Manuscript profile

Open Access Article

6 - Rules Governing Use of Water Resources During Armed Conflicts
Ebrahim Rahmani Seyed Davood Aghaee Siyamak Moazeni

Human’s impacts on his perimeter environment are reached to a level that has gotten global essence and importance. The human beings existence and his health are depending on safe and pure environment. Fundamental mission of United Nation's Organization is to save futu More

Human’s impacts on his perimeter environment are reached to a level that has gotten global essence and importance. The human beings existence and his health are depending on safe and pure environment. Fundamental mission of United Nation's Organization is to save future generations from scourge of war and UNESCO main goal is to assist in order to save peace and security through expansion of cooperation between nations by taking assistance from culture, science and education. During recent century, numerous international and non-international conflicts is targeting the most vital external element of mankind survival by many aggressions and made man engagment to itself. From the beginning of human civilization, water management is the main challenge of mankind and water as the first source of life, has limited human and economical communities. In 21 Century, managing and saving water sources (rivers, installations and subterranean waters) need common ambition in hostility time. Therefore in July 2010, General Assembly added a new right to human rights covenant called “public right of accessibility to clean water” and it announced decade of 2005 to 2015 as water decade with the motto of “Water, Third Millennium Treasure”. The aim of the article is to review the subject that human rights are consist of principles and rules that are observing on the method of supporting and saving water in all of its forms like rivers, water installations and underground sources and how military forces face to this resuscitative material. Manuscript profile

Open Access Article

7 - Source and health risk assessment of arsenic in the water resources of Takab mining area
N. Heydarian

Arsenic is one of the heavy metals having harmful effects on human health if enters into the environment and water resources, so the major challenge of arsenic exposure is related to drinking water. The study area is Takab watershed in West Azarbaijan, which includes tw More

Arsenic is one of the heavy metals having harmful effects on human health if enters into the environment and water resources, so the major challenge of arsenic exposure is related to drinking water. The study area is Takab watershed in West Azarbaijan, which includes two large Zarshouran and Agh Dareh gold mines in Carlin type. Carlin gold mines are sulphidic that are able to pollute the downstream environmental resources such as arsenic. In this work, the carcinogenic and non-carcinogenic health risks associated with arsenic was evaluated for the human community, who are living in Takab watershed and are exposed to arsenic through oral and dermal pathways with contaminated water sources . 45 water samples were randomly collected from surface and groundwater resources in the study area with regard to expert judgment and the distribution points, analyzed by ICP-MS method. Then, the health risk was assessed using by target cancer risk (TR), risk coefficient (HQ) and index hazard (HI). The total results showed that arsenic contamination is derived from volcanic activities and Quaternary alteration and gold mining activities in the east and north of the region. Most of the samples were revealed a range of 9-10 and -100 to -250 mV as pH and oxidation-reduction potential, respectively, which indicates the predominance of arsenate species (As5+) in the form of H2AsO4-. HQ and HI values are more than 10 in 52% of the samples, which indicate the high health risk in people living in the study area. Carcinogenic risk level varies from 0 to 2×10-7, which shows no carcinogenic risk to very high risk by arsenic contamination in water resources. Overall, there are both risks of carcinogenesis and non-cancerous impact in the east and north of the region for intake by ingestion, drinking and skin contact due to water contamination from the natural and anthropogenic sources. Therefore, it is recommended to pay special attention to continuous monitoring for potential contaminant, different methods for preventing exposure to polluted water resources and treatment methods in order to minimize the health risk of the population. Manuscript profile

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