This document discusses various membrane processes used in industrial water and wastewater treatment. It defines membrane processes as including microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and electrodialysis. These processes are used to desalinate seawater, treat brackish groundwater, soften water, recover wastewater, and remove contaminants. The document provides details on the applications and operating principles of ultrafiltration and reverse osmosis membrane processes. It also discusses other wastewater treatment methods like freezing, elutriation, and the removal of color, odor, taste, iron and manganese.
Industrial waste water purification procedurepasindulaksara1
The effluent Treatment Plant (ETP) is a method that is used to treat the emanation coming out from many areas of the plant. It includes biological, physical, and chemical processes. It aims to releasing safe water into the environment to prevent it from getting cop0ntaminated. These plants are have been very useful in the process of providing clean water to the environment and have conserved water in a number of ways.
Industrial waste water purification procedurepasindulaksara1
The effluent Treatment Plant (ETP) is a method that is used to treat the emanation coming out from many areas of the plant. It includes biological, physical, and chemical processes. It aims to releasing safe water into the environment to prevent it from getting cop0ntaminated. These plants are have been very useful in the process of providing clean water to the environment and have conserved water in a number of ways.
Water is a precious resource and without it life is not possible on earth
Water is getting polluted day by day due to excessive and careless use so the percent of available drinking water is reducing
There are many ways which causes water pollution and the effects of it are very harmful for all living and non-living objects
In general, sewage contains dissolved solids, suspended solids, nutrients (N, P), sulphate, chloride and heavy metals (Fe, Cu, Co, Zn, Pb, Ni), bacteria and viruses.
This 0.1% contains organic matter, microorganisms and inorganic compounds.
Of the solids present in sewage, 70% are organic and 30% are inorganic in nature.
The organic fraction contains proteins (60%), carbohydrates (20%) and fats (10%).
The inorganic fraction contains grit, salts and metals.
The Sewage Treatment Process essentially includes three stages. What are the three stages of sewage treatment and How does each stage work?
The three stages can be divided into primary, secondary, and Tertiary. In each step, water is purified to the next level to access clean water for humans and the environment.
1.This stage essentially includes the process of sedimentation. The water is held in the large sedimentary or rainwater tanks where the settleable solids are removed. Since the sedimentation tanks work on the principle of gravity, the solids settle at the bottom, and the lighter solids float in the tanks. Anyhow, let's move forward to stage 2 of secondary treatment. After the sludge settles at the bottom, the water is then released for its secondary treatment.
2.In this process, waste is broken down by aerobic bacteria and incorporated into the wastewater system.
3. Tertiary treatment is also known as polishing and disinfecting the water with the highest standards. This stage is critical to producing the water to a particular specification such as technical water, mineral water etc. It is also used to treat the water in public systems.
1.the incoming wastewater passes through screening equipment where objects such as rags, wood fragments, plastics, and grease are removed. The material removed is washed and pressed and disposed of in a landfill. The screened wastewater is then pumped to the next step: grit removal.
2. In this step, heavy but fine material such as sand and gravel is removed from the wastewater. This material is also disposed of in a landfill.
3. The material, which will settle, but at a slower rate than step two, is taken out using large circular tanks called clarifiers. The settled material, called primary sludge, is pumped off the bottom and the wastewater exits the tank from the top. Floating debris such as grease is skimmed off the top and sent with the settled material to digesters.
4. In this step, the wastewater receives most of its treatment. Through biological degradation, the pollutants are consumed by microorganisms and transformed into cell tissue, water, and nitrogen.
5. Large circular tanks called secondary clarifiers
Industrial Effluent Treatment by Modern Techniques.pptEr. Rahul Jarariya
Effluent Treatment Plant or ETP is one type of waste water treatment method which is particularly designed to purify industrial wastewater for its reuse and its aim is to release safe water to the environment from the harmful effect caused by the effluent. Helping achieve a greener society.
Water is a precious resource and without it life is not possible on earth
Water is getting polluted day by day due to excessive and careless use so the percent of available drinking water is reducing
There are many ways which causes water pollution and the effects of it are very harmful for all living and non-living objects
In general, sewage contains dissolved solids, suspended solids, nutrients (N, P), sulphate, chloride and heavy metals (Fe, Cu, Co, Zn, Pb, Ni), bacteria and viruses.
This 0.1% contains organic matter, microorganisms and inorganic compounds.
Of the solids present in sewage, 70% are organic and 30% are inorganic in nature.
The organic fraction contains proteins (60%), carbohydrates (20%) and fats (10%).
The inorganic fraction contains grit, salts and metals.
The Sewage Treatment Process essentially includes three stages. What are the three stages of sewage treatment and How does each stage work?
The three stages can be divided into primary, secondary, and Tertiary. In each step, water is purified to the next level to access clean water for humans and the environment.
1.This stage essentially includes the process of sedimentation. The water is held in the large sedimentary or rainwater tanks where the settleable solids are removed. Since the sedimentation tanks work on the principle of gravity, the solids settle at the bottom, and the lighter solids float in the tanks. Anyhow, let's move forward to stage 2 of secondary treatment. After the sludge settles at the bottom, the water is then released for its secondary treatment.
2.In this process, waste is broken down by aerobic bacteria and incorporated into the wastewater system.
3. Tertiary treatment is also known as polishing and disinfecting the water with the highest standards. This stage is critical to producing the water to a particular specification such as technical water, mineral water etc. It is also used to treat the water in public systems.
1.the incoming wastewater passes through screening equipment where objects such as rags, wood fragments, plastics, and grease are removed. The material removed is washed and pressed and disposed of in a landfill. The screened wastewater is then pumped to the next step: grit removal.
2. In this step, heavy but fine material such as sand and gravel is removed from the wastewater. This material is also disposed of in a landfill.
3. The material, which will settle, but at a slower rate than step two, is taken out using large circular tanks called clarifiers. The settled material, called primary sludge, is pumped off the bottom and the wastewater exits the tank from the top. Floating debris such as grease is skimmed off the top and sent with the settled material to digesters.
4. In this step, the wastewater receives most of its treatment. Through biological degradation, the pollutants are consumed by microorganisms and transformed into cell tissue, water, and nitrogen.
5. Large circular tanks called secondary clarifiers
Industrial Effluent Treatment by Modern Techniques.pptEr. Rahul Jarariya
Effluent Treatment Plant or ETP is one type of waste water treatment method which is particularly designed to purify industrial wastewater for its reuse and its aim is to release safe water to the environment from the harmful effect caused by the effluent. Helping achieve a greener society.
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.
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 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.
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.
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 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.
4. Examples for Applications of
Membrane Processes
Desalting seawater
Treating brackish groundwater
Water softening
Waste water recovery
Removing color, odor, and other organic
contaminants
5. Process Configuration - General
Concentrate
Product
Feed
Influent to the
membrane module:
Feed water / feed stream
Liquid that passes through the
semi-permeable membrane:
permeate / product stream /
permeating stream
Semi-permeable membrane
Liquid containing the retained constituents:
Concentrate / retentate / reject / retained phase /
waste stream
6. A membrane is a film.
A semi-permeable membrane is a
VERY THIN film that allows some
types of matter to pass through
while leaving others behind.
7. Membrane Types
ED MF UF NF RO
Retained
Water,
TSS,
microbes
uncharged
molecules
Larger
particles
Larger
molecules
Higher
charged
ions
almost
everything
Transported Dissolved
salts
Dissolved
salts,
small
particles
Small
molecules
and ions
Mono-
valent ions,
small
molecules
Very small
uncharged
molecules
8. Ultrafiltration
Primarily a concentration process
Pumping energy is required to force liquid through the
membrane
Relatively large size particles (MW 10000 – 40000<) are
retained and concentrated
Potential use in the recycling of metal containing alkaline
cleaner wastes and paints (concentrate)
Reduction of metals in industrial wastes
9. Ultrafiltration
Does not change the chemistry of water.
For example to obtain potable water from surface
water, which is chemically clean, but contains algea
and bacteria, UF can be used.
Same water quality with coagulation / flocculaltion
Removes turbidity
UF removes larger organics, colloids, bacteria while
allowing most ions and small organics to permeate
the porous structure.
Larger pore size Requires much lower differential
operating pressure.
10. Ultrafiltration
Cross flow or transverse flow
Any membrane configuration
Use re-circulation for high TSS
Operating pressures ~ 50 psi
Uses back flush to loosen fouling
Excellent pretreatment for RO or Post
treatment for ED.
12. Ultrafiltration
May be considered as pre-treatment before R/O to
prevent clogging of membranes.
Applications in industrial wastes:
Metal industry Seperation of water-oil emulsions
Automotive painting industry to seperate dye from
washing water
Pharmaceutical industry Seperation of enzymes
Food industry Cheese waste
13. Reverse Osmosis -
a Natural Process
Reverse osmosis is a water purification process
that uses a semi-permeable membrane (synthetic
lining) to filter out unwanted molecules and large
particles such as contaminants and sediments like
chlorine, salt, and dirt from drinking water.
In addition to removing contaminants and
sediments, reverse osmosis can also remove
microorganisms – which you certainly do not want
to drink.
14. Osmosis
osmosis is the process by which
water passes through a semi-
permeable membrane from a less
concentrated solution into a more
concentrated one.
In other words, the pure water
passes through the filter to the
contaminated water in order to
equalize the concentrations.
This movement generates osmotic
pressure.
15. In reverse osmosis, an applied
pressure is used to overcome the
osmotic pressure and push the
water from high concentration of
contaminants to low
concentration of contaminants.
This means it’s being forced in
reverse and the contaminated
water is trying to move into the
pure water, but because it must
pass through a filter first, the
contaminants get trapped and
only the pure water passes
through; resulting in the cleanest
possible drinking water – which
is exactly what we want
16.
17. Reverse osmosis typically involves four stages of filtration:
a sediment filter, pre-carbon block, reverse osmosis
membrane, and post-carbon filter.
The sediment filter removes the largest particles, like dirt,
sand, and rust to prevent clogging of the subsequent filters.
The pre-carbon filter uses activated carbon to prevent
anything larger than a spec of flour from passing through as
well as attracting and bonding with positively charged ions
to prevent chemical compounds, like chlorine and
chloramines, from passing through to the third filter.
The reverse osmosis membrane then removes molecules
heavier than water, such as sodium, high levels of lead,
dissolved minerals, and fluoride.
Finally, the post-carbon filter polishes the water
20. Reverse Osmosis
Spiral wound or hollow fine fiber
Pretreatment is critical to success
Operating pressures from 150 - 1000 psi
Removes >95-99% TDS
Concentrate Stream is 15-25% of flow
with 4 to 6 times the TDS.
21. Freezing
When waste water freezes, it can be purified
through the formation of a cleaner layer of ice.
The clean layer of ice can be removed from the
rest of the waste water, and the remaining waste
water is more concentrated.
The new energy-efficient method of purification
is based on the natural freezing process of water:
energy is required only for breaking the ice and
transporting it from the waste water pool.
22. In practice, this method could be used by
leaving waste water from mines to freeze in
special pools under the open sky, after which the
cleaner part could be removed by breaking the
ice.
After that the ice would be taken away using a
machine designed for that purpose to another
pool where the treated waste water would be
recycled, or undergo further treatment using
membrane filtration, for example, for the needs
of various processes.
Recycling water from the industrial process
would reduce the amount of fresh water that is
used.
23. Elutriation
Elutriation is a process for
separating particles based
on their size, shape and
density, using a stream of
gas or liquid flowing in a
direction usually opposite
to the direction of
sedimentation.
This method is mainly used
for particles smaller than 1
μm.
24. Removal of Colour, Odour and Taste
Potable water supplies and manufacturing or
processing of food and drinks demand water that is free
from tastes, colour and odour.
Phenols combine with chorine and form cholorophenol
( medicinal taste).
Dissolved gases and algae also cause taste and odour
problems.
Chlorine, KMnO4 and ozone are strong oxidizing
agents and capable of removing odour and taste most
popular is breakpoint chlorination.
25. Algae can be controlled by copper sulphate or other
herbicides.
Chlorine, chlorine dioxide and ozone also remove
colour, odour and taste.
In general, taste, odour and colour can be removed by
adsorption on activated carbon.
10 to 50 mg/l of dosage in flocculation basins or
filters.
As it is costly, its use is limited to food and beverages.
Activated carbon is regenerated by heating to 1000 0 C.
29. Removal of Iron and Manganese
Iron and Manganese are like brothers and mostly live
together.
Fe and Mn are soluble only in the absence of dissolved
oxygen and at low pH values of below 6.5.
Iron is mostly available water as ferrous carbonate
FeH2(CO3)2.
After oxidation or aeration it turns into an insoluble ferric
form that can be removed by settlement and filtration.
Thus iron is removed by aeration of water and pH
adjustment to above 6.5.
For removal of Manganese, pH should be higher than for
removal of Iron.
Oxygen required for oxidation is supplemented by KMnO4,
Zeolite regenerated with KMnO4 or a normal sand fiiler
remove manganese