The document describes the multi-stage process used to treat drinking water. It begins by removing large solid particles through screening and grit removal. The second stage involves coagulation and flocculation, where chemicals are added to bind smaller particles together into clusters that are then filtered out. The third and final stage disinfects the water by adding chlorine to kill any remaining microorganisms like bacteria or viruses. Each of these stages helps reduce health risks by removing contaminants and pathogens to provide clean, safe drinking water.
Water is the driving force of nature. It is a necessity for all living beings and it in order to survive we must consume clean and hygienic water. However, today with the growth of industrial sector, pollution has increased to a whole new level. Huge amount of pollution leads to contamination and contaminated water leads to diseases. This is the main reason we need to filter the water we consume.
Plastics are everywhere, in our home, school, work, playground, parks, and beaches. It is such a popular material because it is flexible, lightweight, moisture resistant, and inexpensive. Even if plastics are found deep inland, they eventually find their way to the sea or ocean through rivers and streams. The global consumption of plastic was 260 million tons in 2010. It is estimated to reach 297.5 million tons by 2017.
Water is the driving force of nature. It is a necessity for all living beings and it in order to survive we must consume clean and hygienic water. However, today with the growth of industrial sector, pollution has increased to a whole new level. Huge amount of pollution leads to contamination and contaminated water leads to diseases. This is the main reason we need to filter the water we consume.
Plastics are everywhere, in our home, school, work, playground, parks, and beaches. It is such a popular material because it is flexible, lightweight, moisture resistant, and inexpensive. Even if plastics are found deep inland, they eventually find their way to the sea or ocean through rivers and streams. The global consumption of plastic was 260 million tons in 2010. It is estimated to reach 297.5 million tons by 2017.
How well do you know the purification steps involved in your drinking water? Discover the types of processes along with problems faced by our water resources and the difficulty in accessing the water to people in this presentation.
Microplastic is an emerging problem for aquatic as well as terrestrial organisms. Plastic is a synthetic material which is produced from organic polymers including polyethylene, nylon and PVC. There are mainly two types of the MP 1st is primary microplastic and 2nd is secondary microplastic. The source of these microplastic are domestic and industrial products include sunscreens, cosmetic, scrubbers (facial scrubs and hand cleansers) personal care products, insect repellents and materials used in air-blasting, other industrial applications and some plastic are produce breaking of very large plastic by a different process such as chemical deposition, physical fragmentation, physical fragmentation and biological degradation in terrestrial or marine environments. Microplastic cause lethal effect on marine organisms includes invertebrates, vertebrates and other biotas of the marine organisms. Microplastic cause tissue and organ damages, the effect on respiration rates, reduction of feeding, the effect on digestive cavities, to impaired immune functions and physiological stress which influence the status of health and the behavior, accumulation within mussels cause cellular damage which response to oxidative stress and toxic reaction in all organisms of water. Microplastic in aquatic organisms not only kills the marine organisms but also disturb human health. Microplastic directly or indirectly enters into the human food chain and cause digestive problems, stomach disease and cancer in human. Microplastic also causes financial damage because fishes are the main source of income in many countries. Without immediate strong preventive measures about microplastic many problems will be world face in the future. In this article, we discuss the about the source of microplastic, transfer of microplastic, the effect on marine organisms as well as human, ingestion of microplastic and control measure of microplastic.
This is a lecture on household water treatment methods and techniques. These techniques are valuable for point-of-use treatment in emergency situations or where no elaborate systems exist.
Its all about Microplastics, which is being a very pronounced issue these days. What microplastics are and how they affect the oceans and marine organisms.
La Sbrogliatura di un circuito elettronico è il tema della rubrica “Arduino, ECAD ed elettronica applicata”.
La storia e i lavori di Robert Hooke sono il tema della rubrica "Basi per il disegno e la progettazione".
La "Designer’s Story" la seconda ed ultima parte della biografia di Bruno Munari alla ricerca delle sue varie poetiche compositive.
La rubrica "Elementi di progettazione edile", condotta da Antonio Martini, ha per oggetto “L’atto autorizzativo” per l’edilizia residenziale.
Francesca Albano spiega la preziosa realizzazione di un modello computazionale del cuore umano nella rubrica “Ingegneria Biomedica Open Access”.
Simone Paganelli, giovane e poliedrico architetto romano, si racconta in una piacevole chiacchierata nell’Intervista di questo mese.
Nicola Amalfitano descrive un momento epico della recente storia della musica italiana parlandoci de “Gli Urlatori”.nella rubrica “Musica”.
Si conclude la panoramica storica sugli UAV nella rubrica “New hardware for CAD”.
“Le fasi della pianificazione esecutiva BIM per professionisti ed imprese” è il tema del “Corso di orientamento alla BIM”.
Nel “Corso di base per SketchUp” si parla de “Il menù Strumenti, il Sistema CSG & gli Strumenti solidi”.
La seconda parte del tutorial di Antonello Buccella sulla renderizzazione di un modello 3D per Google Earth.
Prima puntata del “Corso di Umap” di Paolo Bubici
How well do you know the purification steps involved in your drinking water? Discover the types of processes along with problems faced by our water resources and the difficulty in accessing the water to people in this presentation.
Microplastic is an emerging problem for aquatic as well as terrestrial organisms. Plastic is a synthetic material which is produced from organic polymers including polyethylene, nylon and PVC. There are mainly two types of the MP 1st is primary microplastic and 2nd is secondary microplastic. The source of these microplastic are domestic and industrial products include sunscreens, cosmetic, scrubbers (facial scrubs and hand cleansers) personal care products, insect repellents and materials used in air-blasting, other industrial applications and some plastic are produce breaking of very large plastic by a different process such as chemical deposition, physical fragmentation, physical fragmentation and biological degradation in terrestrial or marine environments. Microplastic cause lethal effect on marine organisms includes invertebrates, vertebrates and other biotas of the marine organisms. Microplastic cause tissue and organ damages, the effect on respiration rates, reduction of feeding, the effect on digestive cavities, to impaired immune functions and physiological stress which influence the status of health and the behavior, accumulation within mussels cause cellular damage which response to oxidative stress and toxic reaction in all organisms of water. Microplastic in aquatic organisms not only kills the marine organisms but also disturb human health. Microplastic directly or indirectly enters into the human food chain and cause digestive problems, stomach disease and cancer in human. Microplastic also causes financial damage because fishes are the main source of income in many countries. Without immediate strong preventive measures about microplastic many problems will be world face in the future. In this article, we discuss the about the source of microplastic, transfer of microplastic, the effect on marine organisms as well as human, ingestion of microplastic and control measure of microplastic.
This is a lecture on household water treatment methods and techniques. These techniques are valuable for point-of-use treatment in emergency situations or where no elaborate systems exist.
Its all about Microplastics, which is being a very pronounced issue these days. What microplastics are and how they affect the oceans and marine organisms.
La Sbrogliatura di un circuito elettronico è il tema della rubrica “Arduino, ECAD ed elettronica applicata”.
La storia e i lavori di Robert Hooke sono il tema della rubrica "Basi per il disegno e la progettazione".
La "Designer’s Story" la seconda ed ultima parte della biografia di Bruno Munari alla ricerca delle sue varie poetiche compositive.
La rubrica "Elementi di progettazione edile", condotta da Antonio Martini, ha per oggetto “L’atto autorizzativo” per l’edilizia residenziale.
Francesca Albano spiega la preziosa realizzazione di un modello computazionale del cuore umano nella rubrica “Ingegneria Biomedica Open Access”.
Simone Paganelli, giovane e poliedrico architetto romano, si racconta in una piacevole chiacchierata nell’Intervista di questo mese.
Nicola Amalfitano descrive un momento epico della recente storia della musica italiana parlandoci de “Gli Urlatori”.nella rubrica “Musica”.
Si conclude la panoramica storica sugli UAV nella rubrica “New hardware for CAD”.
“Le fasi della pianificazione esecutiva BIM per professionisti ed imprese” è il tema del “Corso di orientamento alla BIM”.
Nel “Corso di base per SketchUp” si parla de “Il menù Strumenti, il Sistema CSG & gli Strumenti solidi”.
La seconda parte del tutorial di Antonello Buccella sulla renderizzazione di un modello 3D per Google Earth.
Prima puntata del “Corso di Umap” di Paolo Bubici
La rubrica di Arduino propone un esercizio pratico per imparare ad impiegare la breadboard virtuale. Continua la storia sui vari Enti Normativi nella rubrica dedicata alle Basi per il disegno e la progettazione. Per la rubrica Cinema & Animazione Nunzia Nullo ci presenta la recensione di Tale of tales una straordinaria fiaba filmata. Rodolfo Bonetto è la Designer’s story di questo numero. Ospite della rubrica dedicata all’Intervista è un artista a tutto tondo di G+: Adam Sondel. Mario Monfrecola ci strappa un sorriso ed una riflessione dalla sua rubrica Matematica e dintorni parlandoci della statistica dei capelli bianchi. Un prezioso servizio su Voce e vocalità di Nicola Amalfitano nella rubrica dedicata alla Musica. Sulla scia dei precedenti articoli a partire da questo numero New hardware for CAD si occupa di UAV, i simpatici robottini volanti che portano, attraverso varie strumentazioni ad essi sospese, i nostri occhi virtuali per carpire ogni aspetto di un manufatto edile. Il numero di maggio si chiude con le due rubriche fisse dedicate al Corso di orientamento alla BIM, con un articolo sui processi pianificazione BIM e con il Corso di base per SketchUp tutti i segreti del menù MODIFICA.
5 Best SEO tips and tricks which will rank you fast ,will give you more sales .More tips at seofreetips.net These are the best seo tips and tricks which you must follow if you wan to rank your website.
What is potable water
Purification process to get potable water
Other water purification methods
How to purify water to potable water in wild
FAQ’s about potable water
Lab 2 – Water Quality and ContaminationExperiment 1 Drinkin.docxsmile790243
Lab 2 – Water Quality and Contamination
Experiment 1: Drinking Water Quality
Bottled water is a billion dollar industry in the United States. Still, few people know the health benefits, if any, that come from drinking bottled water as opposed to tap water. This experiment will look at the levels of a variety of different chemical compounds in both tap and bottled water to determine if there are health benefits in drinking bottled water.
POST-LAB QUESTIONS
1. Develop a hypothesis regarding which water sources you believe will contain the most and least contaminants, and state why you believe this. Be sure to clearly rank all three sources from most to least contaminants.
Hypothesis = If bottled water is a billion-dollar industry in the United States then it must contain less chemicals, if any, that come from my local tap water and should be healthier. I think that Fiji water will contain the least amount of contaminants because the water is bottled at the source. It is bottled from an artesian aquifer and remains untouched by man (FijiWater.com). An artesian aquifer is essentially a well that is in particular geologic layer that stores water. Following the Fiji water, I think that the Dasani water will contain more contaminants than the Fiji water but less than my local tap water because Dasani is simply purified water. Dasani’s purified water is purified using reverse osmosis then minerals are added in after the purification process (Dasani.com). Finally, I think that my local tap water will contain the greatest amount of contaminants because there is no purification system in place.
Table 1: Ammonia Test Results
Water Sample
Test Results (mg/L)
Tap Water
0(mg/L)
Dasani® Bottled Water
0(mg/L)
Fiji® Bottled Water
0(mg/L)
Table 2: Chloride Test Results
Water Sample
Test Results (mg/L)
Tap Water
0(mg/L)
Dasani® Bottled Water
0(mg/L)
Fiji® Bottled Water
0(mg/L)
Table 3: 4 in 1 Test Results
Water Sample
Total Alkalinity
(mg/L)
Total Chlorine
(mg/L)
Total Hardness
(mg/L)
Tap Water
0(mg/L)
4.0(mg/L)
50(mg/L)
Dasani® Bottled Water
0(mg/L)
0(mg/L)
0(mg/L)
Fiji® Bottled Water
0(mg/L)
4.0(mg/L
50(mg/L)
Table 4: Phosphate Test Results
Water Sample
Test Results (ppm)
Tap Water
50ppm
Dasani® Bottled Water
10ppm
Fiji® Bottled Water
100ppm
Table 5: Iron Test Results
Water Sample
Test Results (ppm)
Tap Water
0.15ppm
Dasani® Bottled Water
0ppm
Fiji® Bottled Water
0ppm
Table 6: pH Results
Water Sample
Test Results
Tap Water
7
Dasani® Bottled Water
3
Fiji® Bottled Water
6
2. Based on the results of your experiment, would accept or reject the hypothesis you produced in question 1? Explain how you determined this.
Accept/reject = Based on the results of the experiment I would reject the hypothesis that I produced in question 1 because the Fiji Bottled Water contained the same amount of chlorine and hardness and the bottled Dasani water contained no hardness or chlorine. In addition, the Fiji Bottled Water had the highest amount of phosphate p ...
Running Head Dependence of man on environment1Dependence .docxsusanschei
Running Head: Dependence of man on environment
1
Dependence of man on environment
5
Title
Name
SCI 207: Dependence of man on the environment
Instructor
Date
Introduction
Background
Looking at the history of mankind one thing is really common; all the wars were fought for three main reasons wealth, women and land. However looking at the future of this era it can be easily concluded that all of the future wars will be fought for the sake of water. Water crisis is not just going to be a crisis but a threat to the very existence of civilization. Human beings when sent to this earth were the weakest of all forces but with the quality of living standards and use of resources it conquered all forces of nature. Now coming to the present situation of water in the entire world people don’t have access to fresh water supply in most parts of the world. The situation is alarming as the absence of good quality water can cause numerous diarrheal diseases, including Cholera, and other serious illnesses such as Guinea worm disease, Typhoid, and Dysentery. Therefore quality of good water is necessary for living.
Objective
Considering the increasing number of water related diseases and other issues in the world. Our objective was to analyze, organize and summarize the information in order to find the solution that the people are facing with regards the water related issues. How they can provide themselves and their families with water supply that is purely hygienic and doesn’t cause any harm to them and to their families. The further objective was to find the reasons of what is the quality of water that most of the people are drinking. Is tap water good for health for most of the people in today’s world.
Experiment 1: Diversity of Plants
Table 2: Number of Each Plant Species Present in Pot 1 and Pot 2
Species Observed
Number in Pot 1(sunlight)
Number in Pot 2(shade)
Zinnia
0
0
Marigold
0
0
Morning Glory
0
0
Cosmos
0
0
Ryegrass
0
0
Total Number of Species in Pot:
0
0
Hypothesis
I have developed a hypothesis that plants that get the most light will develop in shape better than the plants which exists only in the shadow.
Conclusion
According to Bensel & Turk, (2014), In terrestrial ecosystems, air pollution deposition affects plant physiology; microbial processes; biogeochemical cycles of substances, such as nitrogen; and plant community dynamics. In aquatic ecosystems, acidic deposition results in acidification of waterways, the mobilization of trace metals in surface waters, and ultimately, the loss of aquatic biodiversity.
Based on the experiment and the comprehensive research I reject my this hypothesis and this is because there was limited sunlight the flowers were not able to completely grow in the shadow, there are several stems that grew but I cannot identify to which plant they belong. I would say the eco system is healthy; my home is just not properly set for growing plants. I would say the eco system is somewhat healthy because there was som ...
A simple presentation on water purification using microorganisms
here the water purification process activated sludge is discussed and trickling filters usage and what is use of water purification and use of microorganisms
Water intake and treatment process at lilongwe water boardShareef Ngunguni
In Malawi,Lilongwe water Board is a major supply of water to different urban locations. Dirty water abstracted is converted into clean and portable water by physical,biological and chemical processes. Lilongwe water board disinfect the water by chlorination. Different tests are carried out every 3hrs to implement HACCP and ensure safe water to people.
Similar to HSC Biology 3.2: Treatment of water (20)
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
1. HSC Biology
• Module 3: The Search For Better Health
1. Over 3000 years ago
the Chinese and
Hebrews were
advocating cleanliness
in food, water and
personal hygiene
1. • Gather, process and analyse information from
secondary sources to describe ways in which
drinking water can be treated and use available
evidence to explain how these methods reduce
the risk of infection from pathogen
2.
Students:
2. Water
Cleaning water is more difficult than cleaning food!
Water is everywhere and can easily be contaminated with
the many microorganisms and microbes flying around.
3. Pathogens in our drinking water can
cause some serious illnesses
😷 💀 🤒 💀
4. Pathogens in our drinking water can
cause some serious illnesses
Very important
😷 💀 🤒 💀
5. Most developing countries have a poor health system, and
poor water treatment and sewage process
Haiti Chad
Ethiopia
Afghanistan
India
Laos
Cambodia
Most developing countries have a poor health system, and poor
water treatment and sewage process
6. Most developing countries have a poor health system, and
poor water treatment and sewage process
Haiti Chad
Ethiopia
Afghanistan
India
Laos
Cambodia
Most developing countries have a poor health system, and poor
water treatment and sewage process
Those highest at risk from
contaminated water are generally
young children since their immune
systems are not strong enough to
fight against waterborne diseases
10. ≈
1. First Stage
Removing large and small solid particles in the water
Contains waste
and a lot of large
solid particles
11. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
12. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
≈
Filtering out all the unwanted things like
paper, plastics, leaves, and plant
matter.
Filter
13. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
≈
Filtering out all the unwanted things like
paper, plastics, leaves, and plant
matter.
≈
De-grittingFilter
This involves removing even smaller
solids such as sand, rocks and food
pips
14. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
≈
Filtering out all the unwanted things like
paper, plastics, leaves, and plant
matter.
≈
De-gritting
The grit is forced through a forced
vortex, which causes the grit to sink to
the bottom of a grit removal chamber.
Filter
15. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
≈
Filtering out all the unwanted things like
paper, plastics, leaves, and plant
matter.
≈
De-gritting
The grit is forced through a forced
vortex, which causes the grit to sink to
the bottom of a grit removal chamber.
Filter
16. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
≈
Filtering out all the unwanted things like
paper, plastics, leaves, and plant
matter.
≈
De-gritting
The grit is forced through a forced
vortex, which causes the grit to sink to
the bottom of a grit removal chamber.
Filter
17. ≈
1. First Stage
Removing large and small solid particles in the water
Larger things
are removed first
Filtering out all the unwanted things like
paper, plastics, leaves, and plant
matter.
≈
De-gritting
The grit is forced through a forced
vortex, which causes the grit to sink to
the bottom of a grit removal chamber.
Filter
19. 2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
Alum is added to the water
A substance that sticks and clumps particles
together
20. 2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
The unwanted particles are stuck
together, and the resulting clump
of particles something called a
‘floc’.
21. The unwanted particles are stuck
together, and the resulting clump
of particles something called a
‘floc’.
2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
22. The unwanted particles are stuck
together, and the resulting clump
of particles something called a
‘floc’.
2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
23. The unwanted particles are stuck
together, and the resulting clump
of particles something called a
‘floc’.
2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
A lot of floc is formed
24. The unwanted particles are stuck
together, and the resulting clump
of particles something called a
‘floc’.
2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
A lot of floc is formed
Clog the filters!
25. 2. Second Stage
The water undergoes coagulation and flocculation
Coagulant
A lot of floc is formed
Clog the filters!
Filters are backwashed every 24
hours to remove any floc that has
accumulated.
The unwanted particles are stuck
together, and the resulting clump
of particles something called a
‘floc’.
26. The water is disinfected by
adding chlorine.
3. Third Stage
Microorganisms are removed and the water is enhanced
This will kill any
microorganisms,
bacteria, viruses,
and parasites still
in the water
27. The water is disinfected by
adding chlorine.
3. Third Stage
Microorganisms are removed and the water is enhanced
Next, fluoride is added to reduce
dental cavities, and lime is added to
adjust the pH of water.
This will kill any
microorganisms,
bacteria, viruses,
and parasites still
in the water
28. How does each stage of the water
treatment process reduce the risk of
infection from pathogens?
29. Stage 1 Stage 2 Stage 3
The removal of large solids
via screening and de-gritting
The coagulation, flocculation,
and filtering of suspended
solids.
Kill any bacteria, viruses and
parasites by adding chlorine
There is little doubt that these
large particles in the water affect
the quality of water.
They can carry microbes, so
when you remove these
particles, you remove the
microbes.
These suspended solids generally
include organic substances and
nutrients. This is really good for
bacteria and is what they usually
feed on. By removing these
suspended solids, we remove the
bacteria’s food sources for
bacteria.
Not only will this remove the
bacteria, but there will be a much
lower chance for bacteria to grow
and multiply.
Fluoride is added to strengthen our
teeth and reduce tooth decay and
cavities. When we drink tap water, it
protects us against the harmful
plaque-forming microbes that
lurk in our mouths.
The pH change due to lime. This is
actually added to minimize
corrosion in the plumbing
30. Stage 1 Stage 2 Stage 3
Water undergoes quite a rigorous process that
ensures that every contaminant and pathogen is
gone by the time it reaches our taps.
As long-winded as this process is, it is crucial in minimising any
risk of infections by ensuring that our water is clean