This document discusses various methods for sampling water. It begins by explaining that sampling must account for environmental heterogeneity and can involve static or dynamic systems. It then outlines five main sampling methods: systematic, random, judgmental, stratified, and haphazard. For each method, it provides an example of how it would be implemented for water sampling. It also discusses types of samples, equipment for surface and groundwater sampling, and considerations for continuous monitoring. The key points are that sampling must address spatial and temporal variability and that different methods have advantages for different sampling needs and environments.
Here you will find brief description about water sampling. actually it's so important to examine the water we use our daily life in order to avoid negative impact of water.
This Presentation Clarifying about potable Water analysis and their methods which i gave training on operation and maintenance team for Oman Al Ghubrah Independence Water Project (SWRO Desalination 42 MIGD)
Water has its own taste, color, smell and constituents. Not all water can be used for all purposes. Eg. Sea water can not be used by us for drinking. The suitability of water for different purposes is determined by its quality parameters. The Quality of water is equally important than quantity. Even if present in huge amounts, we can not use salt water in many life support activities. Water has its own Physical properties, Chemical composition and Biological Properties. This module highlights the water quality parameters that are essential.
This presentation describes, how the water can be analyzed using the basic parameters like DO, COD, BOD, Alkalinity and so on. The physical, chemical, and biological parameters were discussed here.
Here you will find brief description about water sampling. actually it's so important to examine the water we use our daily life in order to avoid negative impact of water.
This Presentation Clarifying about potable Water analysis and their methods which i gave training on operation and maintenance team for Oman Al Ghubrah Independence Water Project (SWRO Desalination 42 MIGD)
Water has its own taste, color, smell and constituents. Not all water can be used for all purposes. Eg. Sea water can not be used by us for drinking. The suitability of water for different purposes is determined by its quality parameters. The Quality of water is equally important than quantity. Even if present in huge amounts, we can not use salt water in many life support activities. Water has its own Physical properties, Chemical composition and Biological Properties. This module highlights the water quality parameters that are essential.
This presentation describes, how the water can be analyzed using the basic parameters like DO, COD, BOD, Alkalinity and so on. The physical, chemical, and biological parameters were discussed here.
Ensuring potable water for public consumption is a major Public Health Concern. This presentation sums up all the necessary and prioritized parameters conducted for water analysis.
Deals with the measurement of organic matter concentration in water and wastewater. BOD, BOD kinetics and COD tests are discussed at length. Further, as part of the ultimate BOD measurement, other associated tests like Dissolved Oxygen and Ammonical, Nitrate and Nitrite forms of nitrogen are also discussed.
This presentation discusses the drinking water quality parameters, drinking water quality standards, water quality index and classification of water bodies and standards
Air Quality Sampling and Monitoring: Stack sampling, instrumentation and methods of analysis of SO2, CO etc, legislation for control of air pollution and automobile
pollution
Ensuring potable water for public consumption is a major Public Health Concern. This presentation sums up all the necessary and prioritized parameters conducted for water analysis.
Deals with the measurement of organic matter concentration in water and wastewater. BOD, BOD kinetics and COD tests are discussed at length. Further, as part of the ultimate BOD measurement, other associated tests like Dissolved Oxygen and Ammonical, Nitrate and Nitrite forms of nitrogen are also discussed.
This presentation discusses the drinking water quality parameters, drinking water quality standards, water quality index and classification of water bodies and standards
Air Quality Sampling and Monitoring: Stack sampling, instrumentation and methods of analysis of SO2, CO etc, legislation for control of air pollution and automobile
pollution
Impact of Enterprise Asset Management System (EAMS) implementation on Preventive & Predictive Maintenance (PPM) optimization. Simply put, if EAMS or CMMS is poorly implemented or EAMS is not implemented at all for an enterprise or plant, Organizations will not be able to have the required data to support or enable PPM optimization.
Practical Arc Flash Protection for Electrical Safety ProfessionalsLiving Online
Electrical safety is an important issue for those working on electrical facilities in utility networks and large industrial installations. A number of serious accidents including fatalities occur every year due to accidents involving electricity resulting in huge financial losses and wasted man-hours. Arc flashes in electrical equipment are now considered one of the major causes of electrical accidents even surpassing the well known hazards of electric shock. Avoiding arc flash incidents and the resulting injuries is one of major challenges today facing electrical workers and requires adequate attention in the stages of system planning, design, installation, operation and maintenance.
Injuries due to arc flash can depend on many factors, one of which is the incident thermal energy on a worker exposed to a flash. Today, a considerable body of knowledge exists as a result of research efforts and is available to designers and maintenance engineers in the form of standards such as IEEE 1584 and NFPA 70E. This workshop will detail the basis of this approach and also about the major advances that have been made in the area of PPE made of FR fabrics and rated for different levels of thermal exposure.
Prevention however still remains the best form of protection and switchgear manufacturers have made considerable design advances to ensure that the effect of arc flash incidents is contained within the enclosure of switchgear (often called arc flash resistant switchgear) and methods of testing such switchgear have also evolved simultaneously. Another important factor is the approach to avoid arc incidents within the switchgear by proper design and maintenance and techniques to reduce the severity of the flash should such incidents occur.
These would form the key focus areas of this workshop.
MORE INFORMATION: http://www.idc-online.com/content/practical-arc-flash-protection-electrical-safety-professionals-22
Main equipment in the power plant is Generator. It's cost is much higher than any other equipment so we will have to protect the generator from all the possible faults and errors.
Ro plant Manufacturers in Chennai, Bangalore, Hyderabad, Cochin, Indiaammaqua
The Top Roofing contractors in Chennai are Sole Proprietorship (Individual) based firm, engaged as the trader and wholesaler of Roofing Contractors, Roofing Shed, Terrace Roofing and many more. Our Unique Selling Point is providing the best quality and Durable Goods in Reasonable Price.
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Basic Civil and Environmental Engineering, Unit I [Based on First year Engine...Tushar Sonawane
Useful for First year Engineering Students of Savitribai Phule Pune university, Pune (University of Pune) [Common to all Branches]
This PPT shows the details regarding Introduction to Civil Engineering.
This is first Module from the subject Basic Civil and Environmental Engineering. [101005]
Few more PPTs and Videos are available at my blog tusharhsonawane.wordpress.com
This presentation talks about the first commercial membranes starting in the 1960's and then moves on to discuss how membranes work and the processes required to clean them.
How Reverse Osmosis Water Purification Systems WorkAlisha Roy
Reverse Osmosis is a process in which dissolved inorganic solids (such as salts) are removed from a solution (such as water). This is accomplished by household water pressure pushing the tap water through a semi permeable membrane. The membrane (which is about as thick as cellophane) allows only the water to pass through, not the impurities or contaminates. http://catalogs.indiamart.com/products/reverse-osmosis-systems.html
Surface water monitoring that how we do and what are the most objectives, methodology and scope that are in this ppt and it is very important for monitor a surface water that are shown in it
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Week 2 Environmental Monitoring_Sampling & Data Quality Objectives.pptxSansenHandagJr
The basic principles of monitoring and characterization are described
for different environments, considering their most relevant processes. Initially, sampling protocols are described,
followed by documentation of quality control issues and
statistical methods for data analysis. Methods for making
field measurements in soil, vadose zone, water, and atmospheric environments are described. This includes
real-time monitoring, temporal and spatial issues, and
the issues of scale of measurement.
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
Artificial Reefs by Kuddle Life Foundation - May 2024punit537210
Situated in Pondicherry, India, Kuddle Life Foundation is a charitable, non-profit and non-governmental organization (NGO) dedicated to improving the living standards of coastal communities and simultaneously placing a strong emphasis on the protection of marine ecosystems.
One of the key areas we work in is Artificial Reefs. This presentation captures our journey so far and our learnings. We hope you get as excited about marine conservation and artificial reefs as we are.
Please visit our website: https://kuddlelife.org
Our Instagram channel:
@kuddlelifefoundation
Our Linkedin Page:
https://www.linkedin.com/company/kuddlelifefoundation/
and write to us if you have any questions:
info@kuddlelife.org
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
Diabetes is a rapidly and serious health problem in Pakistan. This chronic condition is associated with serious long-term complications, including higher risk of heart disease and stroke. Aggressive treatment of hypertension and hyperlipideamia can result in a substantial reduction in cardiovascular events in patients with diabetes 1. Consequently pharmacist-led diabetes cardiovascular risk (DCVR) clinics have been established in both primary and secondary care sites in NHS Lothian during the past five years. An audit of the pharmaceutical care delivery at the clinics was conducted in order to evaluate practice and to standardize the pharmacists’ documentation of outcomes. Pharmaceutical care issues (PCI) and patient details were collected both prospectively and retrospectively from three DCVR clinics. The PCI`s were categorized according to a triangularised system consisting of multiple categories. These were ‘checks’, ‘changes’ (‘change in drug therapy process’ and ‘change in drug therapy’), ‘drug therapy problems’ and ‘quality assurance descriptors’ (‘timer perspective’ and ‘degree of change’). A verified medication assessment tool (MAT) for patients with chronic cardiovascular disease was applied to the patients from one of the clinics. The tool was used to quantify PCI`s and pharmacist actions that were centered on implementing or enforcing clinical guideline standards. A database was developed to be used as an assessment tool and to standardize the documentation of achievement of outcomes. Feedback on the audit of the pharmaceutical care delivery and the database was received from the DCVR clinic pharmacist at a focus group meeting.
Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Venturesgreendigital
Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune.
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Introduction
Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific.
Early Life and Musical Beginnings
Humble Origins
Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career.
First Steps in Music
Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth.
Rise to Stardom
Breakthrough Albums
The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth.
Iconic Songs
Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry.
Acting and Film Career
Hollywood Ventures
In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth.
Television Appearances
Nelson's char
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
Micro RNA genes and their likely influence in rice (Oryza sativa L.) dynamic ...Open Access Research Paper
Micro RNAs (miRNAs) are small non-coding RNAs molecules having approximately 18-25 nucleotides, they are present in both plants and animals genomes. MiRNAs have diverse spatial expression patterns and regulate various developmental metabolisms, stress responses and other physiological processes. The dynamic gene expression playing major roles in phenotypic differences in organisms are believed to be controlled by miRNAs. Mutations in regions of regulatory factors, such as miRNA genes or transcription factors (TF) necessitated by dynamic environmental factors or pathogen infections, have tremendous effects on structure and expression of genes. The resultant novel gene products presents potential explanations for constant evolving desirable traits that have long been bred using conventional means, biotechnology or genetic engineering. Rice grain quality, yield, disease tolerance, climate-resilience and palatability properties are not exceptional to miRN Asmutations effects. There are new insights courtesy of high-throughput sequencing and improved proteomic techniques that organisms’ complexity and adaptations are highly contributed by miRNAs containing regulatory networks. This article aims to expound on how rice miRNAs could be driving evolution of traits and highlight the latest miRNA research progress. Moreover, the review accentuates miRNAs grey areas to be addressed and gives recommendations for further studies.
1. Water Sampling Methods
&
Tools
Praveen Kumar Singh
M. Sc. (2nd Sem.)
Department of Environmental Science
Central University of Rajasthan
singhpraveenkumar@live.com
3. Sampling Methods
If an environmental domain was completely homogeneous, a single sample
would adequately represent it. However, we seldom come across such a situation, as the
environment is highly heterogeneous.
A static system is one which does not change much with time. It must be
sampled so that the sample reflects all the inhomogeneity of the system. If a field is to
be tested for a longlived pesticide in the soil, that could be considered to be a relatively
static system.
A dynamic system is one whose content changes with time. Most regions
which we wish to characterize by taking samples are dynamic to some extent, and show
both spatial and temporal variation. When a river or a waste effluent stream is to be
characterized, its concentration will probably change over a period of minutes, days, or
hours.
5. Systematic Sampling
For example,
The area to be analyzed may divided by a grid, and a sample taken at each point of
the grid.
For air pollution studies, an air sample might be taken at fixed intervals of time, say
every three hours.
This approach does not require the prior knowledge of pollutant distribution, is easy
to implement, and should produce unbiased samples. However, systematic sampling
may require more samples to be taken than some of the other methods.
6. Random Sampling
Typically, the area to be sampled is divided into triangular or rectangular areas with a
grid. Three dimensional grids are used if the variation in depth (or height) also needs
to be studied. The grid blocks are given numbers. A random number generator or a
random number table is then used to select the grid points at which samples should
be collected. If a waste site contains numerous containers of unknown wastes and it
is not possible to analyze every container, a fraction of the containers are selected at
random for analysis.
7. Judgmental Sampling
In the lake samples might be collected just around the outfall point. This type of
judgmental sampling introduces a certain degree of bias into the measurement.
For example, it would be wrong to conclude that the average concentration at these
clustered sampling points is a measure of the concentration of the entire lake.
However, it is the point which best characterizes the content of the waste stream. In
many instances, this may be the method of choice, especially when purpose of the
analysis is simply to identify the pollutants present. Judgmental sampling usually
requires fewer samples than statistical methods, but the analyst needs to be aware of
the limitations of the samples collected by this method.
8. Stratified Sampling
The strata in a stratified scheme do not necessarily have to be obviously different. The
area may be divided into arbitrary subareas. Then a set of these are selected randomly.
Each of these units is then sampled randomly.
For example, a hazardous waste site can be divided into different regions or units.
Then, the soil samples are collected at random within each region or within randomly
selected regions. Stratification can reduce the number of samples required to
characterize an environmental system, in comparison to fully random sampling.
9. Haphazard Sampling
A sampling location or sampling time is chosen arbitrarily. This type of sampling is
reasonable for a homogeneous system. Since most environmental systems have
significant spatial or temporal variability, haphazard sampling often leads to biased
results. However, this approach may be used as a preliminary screening technique to
identify a possible problem before a full scale sampling is done.
10. Continuous Monitoring
An ideal approach for some environmental measurements is the installation of
instrumentation to monitor levels of pollutants continuously. These real time
measurements provide the most detailed information about temporal variability.
If an industrial waste water discharge is monitored continuously, an accidental
discharge will be identified immediately and corrective actions can be implemented
while it is still possible to minimize the damage.
Continuous monitoring is often applied to industrial stack emissions. Combustion
sources, such as incinerators, often have CO monitors installed. A high CO
concentration implies a problem in the combustion process, with incomplete
combustion and high emissions. Corrective action can be triggered immediately.
Continuous monitoring devices are often used in workplaces to give early warnings of
toxic vapor releases.
At present, a limited number of continuous monitoring devices are available. Monitors
are available for gases such as CO, NO2, and SO2 in stack gases, and for monitoring
some metals and total organic carbon in water. These automated methods are often less
expensive than laboratory analyzed samples, because they require minimal operator
attention. However, most of them do not have the sensitivity required for trace level
determinations.
11. Types Of Samples
Grab sample: A grab sample is a discrete sample which is collected at a specific
location at a certain point in time. If the environmental medium varies spatially or
temporally, then a single grab sample is not representative and more samples need to
be collected.
Composite sample: A composite sample is made by thoroughly mixing
several grab samples. The whole composite may be measured or random samples from
the composites may be withdrawn and measured.
12. Rinse the sampling vessel with water on site 3~4 times. Care must be taken to avoid
contaminating water to be sampled during rinsing.
Submerge the sampling vessel gently, fill it with the water sample and close it tightly. If
the collected water sample may be frozen, leave some space for expansion equivalent to
about 10% of the sampling vessel.
Sampling using Sampling Vessels
Surface water Equipment
14. Buckets or Samplers with Shafts (Scoops)
Such instruments made of polyethylene are often used. A rope can be attached to the
bucket if required. Scoops with adjustable shafts are convenient. Items made of
synthetic resins such as polypropylene can also be used. Samplers made of stainless
steel can be used provided they are not to be used for tests on trace amounts of heavy
metals.
18. Groundwater Equipment
Bailer
A bailer in is a hollow tube used to retrieve groundwater samples from monitoring
wells. Bailers are tied to a piece of rope or a piece of wire and lowered into the water
column. Once lowered, the bailer uses a simple ball check valve to seal at the bottom
in order to pull up a sample of the groundwater table. Bailers can be disposable or
reusable, and they are made out of polyethylene, PVC, FEP or stainless steel.
Bailers are simple devices to use and are
relatively inexpensive. In addition, bailers
can be lowered to any depth while pumps
have sharp limitations on the depth of the
well.
The main drawback of using bailers is
aeration of the water as the sample is
obtained, which could release volatile
organic compounds that need to be tested.
Also, if there is a high amount of sediment
or turbidity, this may interfere with the ball
check valve seating correctly.
19. Suction lift Pump
Suction-lift pumps create a vacuum in the intake
line that draws the sample up to land surface.
Sampling is limited to situations where water
levels are within about 20 ft of the
ground surface.
Vacuum effect can cause the water to lose
some dissolved gas.
20. Air-lift Samplers
The pump injects compressed air at the bottom of
the discharge pipe which is immersed in the liquid.
The compressed air mixes with the liquid causing the
air-water mixture to be less dense than the rest of the
liquid around it and therefore is displaced upwards
through the discharge pipe by the surrounding liquid
of higher density.
Causes changes in carbon dioxide concentrations;
therefore this method is unsuitable for sampling for
pH-sensitive parameters.
In general, this method is not an appropriate method
for acquisition of water samples for detailed chemical
analyses because of degassing effect on the sample.
Oxygenation is impossible to avoid unless
elaborate precautions are taken.
21. Submersible Pump
The submersible pumps are multistage centrifugal pumps
operating in a vertical position. Produced liquids, after being
subjected to great centrifugal forces caused by the high
rotational speed of the impeller, lose their kinetic energy in the
diffuser where a conversion of kinetic to pressure energy takes
place. This is the main operational mechanism of radial and
mixed flow pumps.
The pump shaft is connected to the gas separator or the
protector by a mechanical coupling at the bottom of the pump.
When fluids enter the pump through an intake screen and are
lifted by the pump stages. Other parts include the radial
bearings (bushings) distributed along the length of the shaft
providing radial support to the pump shaft turning at high
rotational speeds. An optional thrust bearing takes up part of
the axial forces arising in the pump but most of those forces
are absorbed by the protector’s thrust bearing.