The document summarizes the treatment scheme for waste water generated from dairy industries. It describes the various sources and characteristics of the waste water including high levels of organic material, BOD and COD. It then outlines both conventional and emerging treatment methods for the waste water, including physical processes like screening and sedimentation, chemical processes like coagulation and adsorption, and biological processes like aerobic treatment and anaerobic digestion. The treatment methods aim to reduce pollutants and produce treated water and by-products that can be recovered and utilized.
Membrane bioreactors for wastewater treatmentwwwtwastewater
Membrane bioreactor (MBR) is the combination of a membrane filtration process with a suspended growth bioreactor. It is a very advanced technology and is now widely used
for municipal and industrial wastewater treatment.
Wastewater Treatment for Sugar Industry Hülya Pala
I decided to share my another presentation about wastewater treatment which is especially about sugar industry to be beneficial for you.( The link for slide 5: https://www.youtube.com/watch?v=EP_fgp7zYKk)
Dairy waste water treatmentby arhana gautamarchana gautam
The dairy industry involves processing raw milk into products such as consumer milk, butter, cheese, yogurt, condensed milk, dried milk (milk powder), and ice cream, using processes such as chilling, pasteurization, and homogenization. Typical by-products include buttermilk, whey, and their derivatives. Dairy industries have shown tremendous growth in size and number inmost countries of the world . These industries discharge wastewater which is characterized by high chemical oxygen demand, biological oxygen demand, nutrients, and organic and inorganic contents. Such wastewaters, if discharged without proper treatment, severely pollute receiving water bodies.
Dairy processing plants can be divided into two categories:
Fluid milk processing involving the pasteurization and processing of raw milk into liquid milk for direct consumption, as well as cream, flavored milk, and fermented products such as buttermilk and yogurt.
Industrial milk processing involving the pasteurization and processing of raw milk into value-added dairy products such as cheese and casein, butter and other milk fats, milk powder and condensed milk, whey powder and other dairy ingredients, and ice cream and other frozen dairy products.
Membrane bioreactors for wastewater treatmentwwwtwastewater
Membrane bioreactor (MBR) is the combination of a membrane filtration process with a suspended growth bioreactor. It is a very advanced technology and is now widely used
for municipal and industrial wastewater treatment.
Wastewater Treatment for Sugar Industry Hülya Pala
I decided to share my another presentation about wastewater treatment which is especially about sugar industry to be beneficial for you.( The link for slide 5: https://www.youtube.com/watch?v=EP_fgp7zYKk)
Dairy waste water treatmentby arhana gautamarchana gautam
The dairy industry involves processing raw milk into products such as consumer milk, butter, cheese, yogurt, condensed milk, dried milk (milk powder), and ice cream, using processes such as chilling, pasteurization, and homogenization. Typical by-products include buttermilk, whey, and their derivatives. Dairy industries have shown tremendous growth in size and number inmost countries of the world . These industries discharge wastewater which is characterized by high chemical oxygen demand, biological oxygen demand, nutrients, and organic and inorganic contents. Such wastewaters, if discharged without proper treatment, severely pollute receiving water bodies.
Dairy processing plants can be divided into two categories:
Fluid milk processing involving the pasteurization and processing of raw milk into liquid milk for direct consumption, as well as cream, flavored milk, and fermented products such as buttermilk and yogurt.
Industrial milk processing involving the pasteurization and processing of raw milk into value-added dairy products such as cheese and casein, butter and other milk fats, milk powder and condensed milk, whey powder and other dairy ingredients, and ice cream and other frozen dairy products.
Deals with UASB reactors for the primary treatment of sewage, stabilization of sludge and removal of BOD. Various components of a UASB reactor are described and design details are included. Modifications to UASB such as UASB ponds, Anaerobic baffle reactors, migrating blanket reactors are also described here.
In his PPT you will come to know about the TREATMENT OF SOLID WASTE, ITS MANAGEMENT and MICROORGANISMS INVOLVED IN THE TREATMENT OF SOLID WASTE. do like, share and follow me to get more such PPT to be uploaded.
A presentation required for the course of Advance Industrial Microbiology (MCB260) at University of the Philippines.
An overview of waste water treatment process.
Some policies in the Philippines were cited.
BOD and COD were explained and the Microorganisms involve in different types of bioreactors and wastewater treatment are also briefly describe.
It describes how the Sulfur is removed from the coal and oil. Desulfurisation of coal and oil is very helpful to bring down the sulfur oxide emissions in the air from the industries and power plants.
Presentation on wastewater treatment plantAmreetOjha
Presentation on Wastewater Treatment Plant. In which you will get Process Flow Diagram and about of Sewage Treatment Plant and Effluent Treatment Plant.
Deals with UASB reactors for the primary treatment of sewage, stabilization of sludge and removal of BOD. Various components of a UASB reactor are described and design details are included. Modifications to UASB such as UASB ponds, Anaerobic baffle reactors, migrating blanket reactors are also described here.
In his PPT you will come to know about the TREATMENT OF SOLID WASTE, ITS MANAGEMENT and MICROORGANISMS INVOLVED IN THE TREATMENT OF SOLID WASTE. do like, share and follow me to get more such PPT to be uploaded.
A presentation required for the course of Advance Industrial Microbiology (MCB260) at University of the Philippines.
An overview of waste water treatment process.
Some policies in the Philippines were cited.
BOD and COD were explained and the Microorganisms involve in different types of bioreactors and wastewater treatment are also briefly describe.
It describes how the Sulfur is removed from the coal and oil. Desulfurisation of coal and oil is very helpful to bring down the sulfur oxide emissions in the air from the industries and power plants.
Presentation on wastewater treatment plantAmreetOjha
Presentation on Wastewater Treatment Plant. In which you will get Process Flow Diagram and about of Sewage Treatment Plant and Effluent Treatment Plant.
Effluent Treatment Plant
What is ETP
Need fo ETP
Design of ETP
Design of ETP
Sludge treatment process
Flowchart of ETP
Case study of ETP
ETP plant operation
Textile plant ETP
Equalization
Sedimentation
Settlers
Sludge treatment process
Flowchart of ETP
Case study of ETP
ETP plant operation
Textile plant ETP
Equalization
Sedimentation
Settlers
PH adjustment
Use of biotechnology in the treatment of municipal wastes and hazardousindust...Sijo A
Industrial waste water is a type of waste water produced by industrial activity, such as that of factories, mills and mines.
It is characterised by its large volume, high temperature, high concentration of biodegradable organic matter and suspended solids, high alkanity or acidity and by variations of flow.
The treatment of wastes by micro-organisms is called biological waste treatment.
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.
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
Climate Change All over the World .pptxsairaanwer024
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
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.
Follow us on: Pinterest
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
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.
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.
1. TREATMENT SCHEME OF WASTE
WATER GENERATED FROM DAIRY
INDUSTRIES
PRESENTATION ON
2. CONTENTS
o Introduction
o Source of wastes
o Characteristics of waste water
Physical Characteristics
Chemical Characteristics
Biological Characteristics
o Effluent standard given by CPCB
o Treatment Methods
Physical Methods
Chemical Methods
Biological Methods
o Emerging Technology
o Flow Chart of waste water treatment
o By-products Recovery
o Utilization of by-products
o References
3. INTRODUCTION
The dairy industry involves processing of raw milk into products such
as butter, cheese, yogurt, ice-cream, curd and milk powder.
The unit operations involved in dairy industry are –
The by-products of dairy industries are buttermilk, whey & their
derivatives.
Wastewater from this industry contains high concentration of organic
material, suspended solids, BOD and COD values, nitrogen
concentrations, oil & grease.
1. Raw milk processing, reception and storage
2. Separation & Standardization
3. Homogenization
4. Pasteurization
5. Chilling
6. Packing and Storage.
4. SOURCE OF WASTES
• Rinsing and washing of bulk tanks or cans in receiving operations.
• Rinsing of residual product remaining in or on the surfaces of all
pipelines, pumps, tanks, vats, processing equipment & filling
machines etc.
• Washing of all processing equipment.
• Water-milk solids mixture discharged to drain during start up, product
changeover and shutdown of pasteurizers, heat exchangers,
separators, clarifiers, and evaporators.
• Sludge discharge from clarifiers.
• Fines from cheese and casein operations.
• Spills and leaks due to improper equipment operation and
maintenance, overflows, and incorrect handling.
• Waste of unwanted by-product (e.g. whey, butter milk)or spoiled
materials
5. CHARACTERISTICS OF WASTE
WATER
The three main characteristics of wastewater generated from dairy industry
are :-
1. Physical Characteristics:
PHYSICAL PARAMETERS DESCRIPTION
COLOUR The colour of the wastewater is usually
white which may turn dark grey or
black due to bacterial decomposition
under anaerobic conditions.
ODOUR The wastewater generated has an
unpleasant odour.
TEMPERATURE The temperature of wastewater is 17-25
degree Celsius.
pH 5.5-9.5
TURBIDITY High turbidity is seen due to presence
of suspended solids in wastewater.
6. 2. Chemical Characteristics:
CHEMICAL PARAMETERS DESCRIPTION
CHEMICAL OXYGEN
DEMAND(COD)
COD of dairy waste water is high (up to
12000 mg/L) due to high organic content
originating from the milk.
NITROGEN CONTENT The high N content originates from milk
protein which may be present in organic
form(protein, urea, nucleic acid) or in
inorganic form(nitrates/nitrites).
PHOSPHOROUS CONTENT P is present in inorganic form as
orthophosphate & polyphosphate.
SUSPENDED SOLIDS High level of suspended solids is due to
the presence of coagulated milk, cheese &
flavoring ingredients.
OIL & GREASE The concentration of oil & grease in the
waste water is more than 10 mg/L.
OTHER ELEMENTS Na , Mg , Ca , Ni is also reported.
Contd….
7. 3. Biological Characteristics:
BIOLOGICAL PARAMETERS DESCRIPTION
BIOLOGICAL OXYGEN
DEMAND(BOD)
Dairy waste water usually have high
BOD due to the presence of large amount
of organic matters. The effluent from
dairy industry has BOD up to 4500mg/L.
DISSOLVED OXYGEN(DO) DO values are from 0.38-1.42 mg/L in
wastewater. The lower value of DO is due
to higher BOD and COD value of waste
water.
Contd…
9. TREATMENT METHODS
PHYSICAL CHEMICAL BIOLOGICAL
Screening
Grit Chamber
Skimming
Tank
Sedimentation
Chemical
Coagulation
Adsorption
Neutralizatio
n
Aerobic Treatment
Anaerobic Treatment
• Up Flow Anaerobic
Sludge Blanket
• Hybrid Reactor
Activated sludge
process, Sequence
batch reactor and
membrane
bioreactor.
Trickling filter
Rotating biological
contactors
Aerated
lagoons
Pond stabilization
10. PHYSICAL METHODS
1. Screening:
It is the first step for wastewater treatment system.
Screening devices consists of parallel bars, wire mesh or perforated
plates to intercept large floating or suspended material.
The main purpose of screening is to remove solid materials that could:
Cause damage to other process equipment.
Cause reduction in efficiency of the whole system & contaminate
waterways.
Types of Screen Size Of Openings Applications
Coarse Screens >6mm Remove large solids, rags & debris.
Fine Screens 1.5-6mm Reduced fine solids present in primary
effluents.
Very Fine Screens 0.2-1.5mm Helps in removal of very fine particles.
Micro Screens 0.001-0.3mm Upgrade 2˚effluent to tertiary standards.
11. 2. Grit Chamber:
They are long narrow tanks that are designed to slow down the flow so
that solids such as large organic particles, sands etc. settles out of the
water.
Its main purpose is to-
(1) Reduce formation of heavy deposits in aeration tanks, aerobic digesters,
pipelines and channels.
(2) Reduce the frequency of digester cleaning caused by excessive
accumulations of grit.
TYPES OF GRIT
CHAMBER
DESCRIPTION
Horizontal Grit Chamber It is a particular basin posed along sewer system &
accurately designed in length & area to assure the flow
speed reduction at 0.30-0.50m/s.
It permits the heavier grit to settle down but carry organic
particles.
Aerated Grit Chamber
It consists of standard spiral flow aeration tank which
allows lighter organic particles to move out of water
streams.
12. 3. Skimming Tank:
The tank is in the form of a long, trough-shaped structure. The tank surface is
made as large as possible, and the sides narrow down at a steep angle.
To prevent heavy solids from settling in the bed, compressed air is blown through
the diffusers placed on the floor of the tank.
When compressed air is circulated, the oily matters rise upward and are
collected in the side trough, from where they are removed.
The waste water enters the tank from the inlet, all the oily matters are collected in
the trough. The outlet conduit is given such a slope that grit is swept up on its
slope and is removed out of the tank.
Its main purpose is to remove oil, grease, and fats from the waste water.
Figure: Skimming Tank. Source(Online Image): https://cutt.ly/0ky7k9a
13. 4. Sedimentation:
It is widely used unit operation in waste-water treatment which involves
settling of suspended material by gravity.
It is used for the removal of-
a) Particles such as clay or silts
b) Particulate matter in the primary settling basin
c) Biological floc in the activated sludge settling basin
d) Chemical flow when the chemical coagulation process is used.
Sedimentation takes place in a settling tank.. There are three main types
of a settling tank-
a) Horizontal flow
b) Solid Contact Clarifiers
c) Inclined Surface Basins
All of these tanks are divided into four zones-
i. Inlet Zone- It main purpose is to spread the water flow across the total
inlet of the tank.
14. ii. Settling Zone- It is the largest portion of the sedimentation basin. In
this zone settling of suspended particles takes place.
iii. Sludge Zone- It is located at the bottom of the tank and provides a
storage area for the sludge before it is removed for additional
treatment or disposal.
iv. Outlet Zone- It controls the amount of water flowing out of the
sedimentation basin. A good outlet ensures that only well-settled
water leaves the basin and enters the filter.
ADVANTAGES DISADVANTAGES
Simple, low cost method to reduce
settleable solids.
Very fine suspended particles cannot
be removed by this method.
Removal of settleable solids can
reduce turbidity and makes water
more susceptible to other treatment
methods to reduce microbes.
Contd…
15. CHEMICAL METHODS
1. Chemical Coagulation:
It helps in removal of very fine suspended particles present in wastewater
which are not removed by sedimentation.
In this process chemicals (coagulants) are added to the water to bring the
non-settling particles together into larger, heavier masses of solids
called floc.
Chemical
Coagulants
Organic Coagulants
• Used for solid & liquid separation
and sludge generation.
• For example-Melamine
formaldehydes and Tannins (used
for absorption of oil & grease).
Inorganic Coagulants
• It is particularly effective on raw
water with low turbidity (total
suspended solids concentration).
• For example- Alum, lime, ferrous
sulfate, ferric chloride.
16. Pros:
Reduces BOD up to 70%.
Aids the settling of finer colloidal particles and mineral contaminants.
Cons:
The addition of chemicals results in the production of a large volume of
sludge which is hazardous due to the nature of the constituents being
added.
The volume and toxicity of the sludge can drive up disposal costs as its
not easily dewatered.
Figure: Illustration of the chemical coagulation process to remove colloidal pollutants.
Source: Carlos E. Barrera-Daz Patricia Balderas-Hernandez Bryan Bilyeu, in Electrochemical Water and
Wastewater Treatment, 2018.
Contd…
17. 2. Adsorption:
It is a process where soluble molecules
(adsorbate) are removed by attachment to the
surface of a solid substrate (absorbent),
primarily by Van der Waals force.
Its main purpose is to remove organic
materials including detergents and toxic
compounds.
The most widely used adsorbent is activated
carbon, which can be produced by pyrolytic
carbonization of biomass.
Activated carbon is a form of carbon
processed to have small, low-volume pores
that increase the surface area available
for adsorption.
Activated carbon is of two types based on
their size:
i. Powdered Activated Carbon(<200 mesh)
ii. Granular Activated Carbon(>0.1mm)
Figure: Adsorption process.
Source(Online Image):
https://cutt.ly/skuqVb6
18. Pros:
It is easy to use.
Helps in the removal of the heavy metals.
It is used to remove chemicals that give objectionable odors or tastes to
water.
Helps in reducing the COD of the wastewater.
Helps in the reduction of total suspended solids present in the wastewater.
Cons:
Adsorption by activated carbon increases the cost of the process.
Relatively requires high investment.
Performance depends on the type of materials used.
Contd…
19. BIOLOGICAL METHODS
1. Aerobic Treatment:
A. Activated Sludge Process:
It is used for treating industrial wastewaters using aeration and a biological
floc composed of bacteria & protozoa.
The basic component of this process is:
Aeration Tank
Settling Tank
Return Activated Sludge(RAS)
Waste Activated Sludge(WAS)
In dairy plant it is of two types:
Extended Aeration
Low-loaded Activated Sludge.
Its main purpose is to oxidizes carbonaceous biological matter and
nitrogenous matter.
20. Pros:
It provides high treatment efficiency for BOD, COD, N &P.
Cost of installation is low.
Cons:
Bulking of sludge can occur.
Large areas of land needed for their operation.
Contd…
Figure: Activated Sludge Process.
Source(Online Image):
https://cutt.ly/kkr6JeD
21. B. Sequencing Batch Reactor(SBR):
It is a modified form of activated sludge
process.
The principle of SBR is same as that of
activated sludge process with one
exception: there is only one tank for
aeration and clarification.
Pros:
Enhances the removal of N, P & TSS.
Has BOD removal efficiency of 80 -90%.
Cons:
High level of maintenance is required.
Has low pathogen removal efficiency.
Figure : Various stages of SBR.
Source(Online Image) :
http://biodos.org/SBR_02.htm
22. C. Membrane Bioreactor(MBR):
It is the combination of a membrane
process with the activated sludge
process.
Its main purpose is to provide an
advanced level of organic and
suspended solids removal.
Pros:
Has high COD removal efficiency(90-
95%).
Reduces BOD to <5mg/L and TSS to
<2mg/L.
Cons:
High operation and capital costs
(membranes).
Membrane complexity and fouling.
Figure: Schematic representation of MBR.
Source: Fundamentals of Membrane
Bioreactors by Bradley LadewigMuayad
Nadhim Zemam Al-Shaeli.
23. 2. Anaerobic Treatment:
Anaerobic digestion is a process by
which microbes are used in absence
of oxygen for stabilization of organic
matter by conversion to biogas.
This process involves four stages:
Hydrolysis
Acidogenesis
Acetogenesis
Methanogenesis
The three types of reactors used
are:
Up Flow Anaerobic Sludge Blanket
(USAB)
Hybrid Reactor
Anaerobic Sequencing Batch
Reactor(ASBR)
Figure: Anaerobic digester.
Source(Online Image): https://cutt.ly/akoge4U
24. A. Up Flow Anaerobic Sludge Blanket (UASB):
It is a single tank process. The wastewater enters the reactor from
the bottom, and flows upward.
A suspended sludge blanket filters and treats the wastewater as the
wastewater flows through .
The main components are:
An influent distribution system
Gas-solid separator
Effluent draw off facilities.
Pros:
It has high COD removal efficiency(80-90%)
Biogas production can be used as
a energy source.
Cons:
Constant source of electricity is required.
Figure: Schematic representation of
USAB.
Source(Online Image):
https://cutt.ly/ekurWP4
25. B. Hybrid Reactor:
It is a combination of a UASB reactor
with an anaerobic filter.
This combination is an advanced form
enabling improved solid retention time
in the treatment of waste water.
It converts organic waste to
recoverable green energy.
The waste sludge obtained is suitable
for land application as liquid fertilizer
due to high nutrient content.
Pros:
It removes 90% of BOD.
It removes 70% of COD.
Cons:
High cost of equipment and process.
Figure: A hybrid reactor.
Source(Online Image):
https://slideplayer.com/slide/3411242/
26. EMERGING TECHNOLOGY
MICROFILTRATION
• It has a pore size of 0.1-
10 micron.
• It allows only dissolved
components to pass
through the membrane.
• It is used for bacteria &
spore reduction, fat
removal in milk
&whey, as well as for
protein & casein
standardization.
ULTRAFILTRATION
• It has a pore size of
0.002-0.1 micron.
• It allows most
dissolved components
& some non-dissolved
components to pass.
• It is widely used in
concentration of whey
protein concentration
and milk protein
concentration.
Membrane Filtration
27. NANOFILTRATION
• It has a pore size of
0.001 micron.
• It allows predominantly
monovalent ions to pass
through the membrane.
• It is used for special
applications such as
partial demineralization
of whey, lactose-free
milk or volume
reduction of whey.
REVERSE
OSMOSIS
• It has a pore size of
0.0001 micron.
• It allows only water to
pass through the
membrane layer.
• It is used for
concentration or
volume reduction of
milk and whey, milk
solids recovery and
water reclamation.
Contd…
28. FLOW CHART OF WASTE WATER
TREATMENT
Primary
Clarifier
Secondary
Clarifier
Waste
activated
sludge
Aeration
Tank
Disinfection
Primary
sludge
To sludge
treatment &
disposal
INFLUENT
recycle
Activated
sludge
EFFLUEN
T
Air
29. BY-PRODUCT RECOVERY
It is done by using cross-flow
ultrafiltration method (CFUF).
In this method the feed is passed
through a membrane as a result the
solid gets trapped in the filter &
the filtrate is released at the other end.
The principal advantage of this is that
the filter cake is washed away during
the filtration process, increasing the
length of time that a filter unit can be
operational.
When whey waste is treated by CFUF,
lactose & salts get permeates through
the membrane. Protein is used as animal
& human food while permeate is used
for lactose preparation.
Figure: Cross-flow ultrafiltration.
Source(Online Image): https://cutt.ly/1kyE6Y9
30. UTILIZATION OF BY-PRODUCT
They can be used for the
production of bio-plastics like
polyhydroxyalkanotes.
They are used for the production
of organic acids like propionic
acid which is used as a
preservative for animal feed &
human food.
They are used as a carbon source
for the production of biofuels.
31. REFERENCES
A. Allwyn Sundarraj, A. Angeline Rajathi, Simon Cruz Vishaal , D.
Rohit, M. Saran Prakash , A. Alexander Sam , S.S. Seihenbalg(2018).
Food biotechnology applications in dairy and dairy products. Journal
of Pharmacy Research,12(4),520-525.
Preeti Birwal, Deshmukh G, Priyanka and Saurabh SP(2017).
Advanced Technologies for Dairy Effluent Treatment. Journal of
Food, Nutrition and Population Health,1:1.
Aleksandar Kolev Slavov(2017). General Characteristics and
Treatment Possibilities of Dairy Wastewater – A Review. Food
Technology and Biotechnology ,55(1),14–28. doi:
10.17113/ftb.55.01.17.4520.
Bharati S. Shete A and N. P. Shinkar(2013). Dairy Industry
Wastewater Sources, Characteristics & its Effects on Environment.
International Journal of Current Engineering and
Technology,3(5),1611-1615.