Effect of H2S on Corrosion in Polluted Waters

2010 ◽  
Vol 95 ◽  
pp. 33-36 ◽  
Author(s):  
Margarito Quintero-Núñez ◽  
Benjamin Valdez ◽  
Michael Schorr

There is a deep universal concern today about the influence of pollutants on the environment including soil, air and in particular water, and about their effects on the durability of engineering materials and the deterioration of structures and the infrastructure. Water pollutants affect the terrestrial, atmospheric and aquatic environments, and even when present at very low levels of a few ppm may impair human health, aquatic life and water quality. The avoidance of water pollution is, therefore, an important part of water resource management. The present work provides an overview of the effects of hydrogen sulfide (H2S) on corrosion in polluted waters, including sea, river, brackish, geothermal and sewage waters.

2021 ◽  
Author(s):  
Nami Prasad ◽  
Prabir Barman ◽  
Jayanta GHOSH ◽  
Prantik Roy

Abstract Surface water serves most of the water requirements to sustain lives on earth. Of all fresh water on earth, only 1.2% is making up of surface water and the rest is confined in ice and ground. As the rivers provide for the significant sources of surface water, there is a need for river-based water resource management to meet global water quality challenge. Haora River that originated in the India’s north-eastern state of Tripura and meets ultimately with the Titas River in the Bangladesh carries a significant impact on life in and around the river both on the Indian side and Bangladesh side. Thus, study emphasizes the test of water quality of the river and corresponding impact therefor based on a detail explanation of the monitoring data obtained through published sources, laboratory analysis of samples and relevant field observations. ANOVA revealed year wise significant variations in physicochemical and biological properties of the river water tested except for pH. Abnormalities were mostly observed in the values of T, DO, BOD, PO4-P and FC. Water Quality Index (WQI) revealed water quality status of the river fall under the category of very poor to unfit, and require proper treatment before the water is being used for drinking and other domestic purposes. Adversities in the water are also found to be affecting the aquatic life and overall river ecosystem. Cause and effect analogy of these abnormalities were established for taking corrective measures. Existing statutory law to prevent and control such anomalies have been found lacking enforcement in the state of Tripura. The broad-based state level water policy to protect and improve water resources has also been found lacking in the state. The study recommends policy level interventions at the earliest considering the specific measures suggested in this study.


Author(s):  
Stuart Bell ◽  
Donald McGillivray ◽  
Ole W. Pedersen ◽  
Emma Lees ◽  
Elen Stokes

This chapter is concerned with the quality of the water environment. Considering that there are well-developed bodies of law at national, European, and international levels, all covering different ground, this is a major topic. The focus here, however, is on the control of pollution of inland and coastal waters; wider issues about water resource management, such as land drainage or flood defence, are not covered in any detail. The various forms of water pollutants are discussed here, as are as their sources and effects. The abstraction of water from the natural environment is only discussed in so far as this has an impact on water quality.


Author(s):  
Azad Kannaujiya

Gomati River originate from Madhoganj Tanda village in Pilibhit district, U.P. it passes through the district of Shahjahanpur, kheri, Hardoi, Sitapur, Janpur and ultimately merge in Ganga. River water is significant for every living organism as well as aquatic life. Water pollution is a major global problem. Modernization and urbanization have polluted the river water and degraded the status. All over the world we are seeing that drain is the main source of water pollution especially for rivers flowing within the city. This drain generally carries industrial effluent, domestic waste, sewage and medicinal waste resulting in poor water quality. Gomati River receives industrial as well as domestic waste from various drains of Lucknow city. As Gomati river is the only source of surface water near the communities. A total 20 parameters namely Temperature, pH, Turbidity, Conductivity, Total dissolved solids (TDS), Total suspended solids (TSS), Total solids (TS), Dissolved oxygen (DO), Biological oxygen demand (BOD) Chemical oxygen demand (COD), Alkalinity, Total hardness, Calcium as ca, Magnesium as Mg, Chloride, Fluoride, Sulphate as So4, Nickel as Ni, Lead as Pb, and Zinc as Zn where analysed and their variation is discussed to obtain the impact of effluents on water quality. From the result it was found higher than the permissible limit of WHO and BIS.


2020 ◽  
pp. 177-202
Author(s):  
Alexandros I. Stefanakis ◽  
Julie A. Becker

Contaminants of emerging concern or, simply, emerging contaminants represent a newly discovered group of chemicals present in surface and groundwater. It was only the improvements in analytical instrumentation that allowed for the detection of these contaminants even at trace levels. The continuous detection of new chemicals with time raises questions concerning their source pathways, their fate, transport, transformations and impact on aquatic environments. The scope of this chapter is to present an overview of the contaminants classified as “emerging”, their sources and introduction pathways to the environment and the related risks to human health and aquatic life.


Author(s):  
Alexandros I. Stefanakis ◽  
Julie A. Becker

Contaminants of emerging concern or, simply, emerging contaminants represent a newly discovered group of chemicals present in surface and groundwater. It was only the improvements in analytical instrumentation that allowed for the detection of these contaminants even at trace levels. The continuous detection of new chemicals with time raises questions concerning their source pathways, their fate, transport, transformations and impact on aquatic environments. The scope of this chapter is to present an overview of the contaminants classified as “emerging”, their sources and introduction pathways to the environment and the related risks to human health and aquatic life.


Author(s):  
Elaine McKeown ◽  
Judith Pawloski

What we do every day at work and in our home lives can make a difference in the quality of our environment. Consider, for example, the flushing of pharmaceuticals into the sewer system can lead to water pollution resulting in a threat to aquatic and human life. In contrast, keeping aquatic life healthy may contribute to human health. Some aquatic-based medications are currently on the market. Others are in various stages of development. In this article the authors argue that, for the benefit of both human and marine life, it is time to implement safer disposal methods for unwanted medications. The authors begin by sharing nursing’s guiding principles for environmental health; after which they review research related to pharmaceutical pollution of water resources; describe health care treatments derived from marine life; and discuss suggestions for promoting aquatic health. They conclude that by taking care to preserve aquatic life, we contribute to the quality of our own human lives.


Water Policy ◽  
2016 ◽  
Vol 18 (4) ◽  
pp. 844-861 ◽  
Author(s):  
Wenlan Ke ◽  
Yalin Lei ◽  
Jinghua Sha ◽  
Guofeng Zhang ◽  
Jingjing Yan ◽  
...  

Mining cities have undergone the process of extensive exploitation, which always results in a series of water issues. Integrated water resource management is necessary in improving water supply, allocation and quality without damaging economic development. This article constructs a linear optimization model including a ‘Top-Down’ socio-economic mode, and ‘Bottom-Up’ water quality control and water supply–demand modes with integrated water resource management focused on water allocation and water reclamation. Based on computer simulation, the model can propose a water resource management under the constraints of water supply–demand and water quality control, and the model can precisely predict the influences of water resource management on economic development, water utilization and water quality. Taking Ordos, a Chinese national resource city, as a case study, this model addresses a detailed water resource management, including a water allocation plan among industries and water reclamation plan with technologies, selection, arrangement and subsidies. The implementation of water resource management can fulfill multiple objectives on water quantity, water quality and sustainable economic development. This study indicates that water resource management with a comprehensive dynamic model can be a maneuverable approach to realize the sustainable development of economic growth and water resource utilization, as well as formulate the regional development plan.


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